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Remove legacy Direct3D 9 and 10 interoperability samples

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Rob Armstrong 2024-12-13 15:29:09 -08:00
parent 37922e6429
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48 changed files with 9 additions and 8735 deletions
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9
CHANGELOG.md
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@ -15,6 +15,15 @@
* `cuHook` demonstrating dlsym hooks. (reason: incompatible with modern `glibc`) * `cuHook` demonstrating dlsym hooks. (reason: incompatible with modern `glibc`)
* `4_CUDA_Libraries` * `4_CUDA_Libraries`
* `batchedLabelMarkersAndLabelCompressionNPP` demonstrating NPP features (reason: some functionality removed from library) * `batchedLabelMarkersAndLabelCompressionNPP` demonstrating NPP features (reason: some functionality removed from library)
* `5_Domain_Specific`
* Legacy Direct3D 9 and 10 interoperability samples:
* `simpleD3D10`
* `simpleD3D10RenderTarget`
* `simpleD3D10Texture`
* `simpleD3D9`
* `simpleD3D9Texture`
* `SLID3D10Texture`
* `VFlockingD3D10`

46
Samples/5_Domain_Specific/SLID3D10Texture/Makefile
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@ -1,46 +0,0 @@
################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - SLID3D10Texture is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

52
Samples/5_Domain_Specific/SLID3D10Texture/README.md
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@ -1,52 +0,0 @@
# SLID3D10Texture - SLI D3D10 Texture
## Description
Simple program which demonstrates SLI with Direct3D10 Texture interoperability with CUDA. The program creates a D3D10 Texture which is written to from a CUDA kernel. Direct3D then renders the results on the screen. A Direct3D Capable device is required.
## Key Concepts
Performance Strategies, Graphics Interop, Image Processing, 2D Textures
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Driver API](http://docs.nvidia.com/cuda/cuda-driver-api/index.html)
cuCtxPushCurrent, cuCtxPopCurrent
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaMalloc, cudaMallocPitch, cudaGetErrorString, cudaFree, cudaGraphicsResourceSetMapFlags, cudaGetLastError, cudaGraphicsMapResources, cudaGetDeviceCount, cudaMemset, cudaGraphicsUnregisterResource, cudaGraphicsSubResourceGetMappedArray, cudaGetDeviceProperties
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

844
Samples/5_Domain_Specific/SLID3D10Texture/SLID3D10Texture.cpp
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@ -1,844 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//
// This example demonstrates interoperability of SLI with a Direct3D10 texture
// and CUDA. The program creates a D3D10 texture which is written from
// a CUDA kernel. Direct3D then renders the result on the screen.
// A Direct3D Capable device is required.
//
#pragma warning(disable : 4312)
#include <windows.h>
#include <mmsystem.h>
#pragma warning(disable : 4996) // disable deprecated warning
#include <strsafe.h>
#pragma warning(default : 4996)
// this header includes all the necessary D3D10 includes
#include <dynlink_d3d10.h>
// includes, cuda
#include <cuda.h>
#include <builtin_types.h>
#include <cuda_runtime.h>
#include <cuda_d3d10_interop.h>
#include <d3d10.h>
// includes, project
#include <rendercheck_d3d10.h> // automated testing
#include <helper_cuda.h> // helper for CUDA error checking and initialization
#define MAX_EPSILON 10
static char *SDK_name = "SLID3D10Texture";
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
IDXGIAdapter *g_pCudaCapableAdapter = NULL; // Adapter to use
ID3D10Device *g_pd3dDevice = NULL; // Our rendering device
IDXGISwapChain *g_pSwapChain = NULL; // The swap chain of the window
ID3D10RenderTargetView *g_pSwapChainRTV =
NULL; // The Render target view on the swap chain ( used for clear)
ID3D10RasterizerState *g_pRasterState = NULL;
ID3D10InputLayout *g_pInputLayout = NULL;
ID3D10Effect *g_pSimpleEffect = NULL;
ID3D10EffectTechnique *g_pSimpleTechnique = NULL;
ID3D10EffectVectorVariable *g_pvQuadRect = NULL;
ID3D10EffectShaderResourceVariable *g_pTexture2D = NULL;
static const char g_simpleEffectSrc[] =
"float4 g_vQuadRect; \n"
"Texture2D g_Texture2D; \n"
"\n"
"SamplerState samLinear{ \n"
" Filter = MIN_MAG_LINEAR_MIP_POINT; \n"
"};\n"
"\n"
"struct Fragment{ \n"
" float4 Pos : SV_POSITION;\n"
" float3 Tex : TEXCOORD0; };\n"
"\n"
"Fragment VS( uint vertexId : SV_VertexID )\n"
"{\n"
" Fragment f;\n"
" f.Tex = float3( 0.f, 0.f, 0.f); \n"
" if (vertexId == 1) f.Tex.x = 1.f; \n"
" else if (vertexId == 2) f.Tex.y = 1.f; \n"
" else if (vertexId == 3) f.Tex.xy = float2(1.f, 1.f); \n"
" \n"
" f.Pos = float4( g_vQuadRect.xy + f.Tex * g_vQuadRect.zw, 0, 1);\n"
" \n"
" return f;\n"
"}\n"
"\n"
"float4 PS( Fragment f ) : SV_Target\n"
"{\n"
" // return g_Texture2D.Sample( samLinear, f.Tex.xy ); \n"
" // return float4(f.Tex, 1);\n"
" float4 g = g_Texture2D.Sample( samLinear, f.Tex.xy );"
" for (int i = 0; i < 1024; ++i) { "
" g.x = sqrt(g.x);"
" g.x += 0.0001;"
" g.x = g.x * g.x;"
" }"
" return g;\n"
"}\n"
"\n"
"technique10 Render\n"
"{\n"
" pass P0\n"
" {\n"
" SetVertexShader( CompileShader( vs_4_0, VS() ) );\n"
" SetGeometryShader( NULL );\n"
" SetPixelShader( CompileShader( ps_4_0, PS() ) );\n"
" }\n"
"}\n"
"\n";
// testing/tracing function used pervasively in tests. If the condition is
// unsatisfied
// then spew and fail the function immediately (doing no cleanup)
#define AssertOrQuit(x) \
if (!(x)) { \
fprintf(stdout, "Assert unsatisfied in %s at %s:%d\n", __FUNCTION__, \
__FILE__, __LINE__); \
return 1; \
}
bool g_bDone = false;
bool g_bPassed = true;
int *pArgc = NULL;
char **pArgv = NULL;
const unsigned int g_WindowWidth = 720;
const unsigned int g_WindowHeight = 720;
bool g_bQAReadback = false;
int g_iFrameToCompare = 1;
struct CudaContextData {
UINT index;
CUcontext context;
int deviceOrdinal;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
};
UINT g_ContextCount = 0;
CudaContextData g_ContextData[32];
// Data structure for 2D texture shared between DX10 and CUDA
struct {
ID3D10Texture2D *pTexture;
ID3D10ShaderResourceView *pSRView;
size_t pitch;
int width;
int height;
} g_texture_2d;
// The CUDA kernel launchers that get called
extern "C" {
bool cuda_texture_2d(void *surface, size_t width, size_t height, size_t pitch,
float t);
}
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd);
HRESULT InitTextures();
int RunKernels(CudaContextData *currentContextData);
void DrawScene();
int Cleanup();
int Render();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
#define NAME_LEN 512
bool findCUDADevice() {
int nGraphicsGPU = 0;
int deviceCount = 0;
bool bFoundGraphics = false;
char devname[NAME_LEN];
// This function call returns 0 if there are no CUDA capable devices.
cudaError_t error_id = cudaGetDeviceCount(&deviceCount);
if (error_id != cudaSuccess) {
printf("cudaGetDeviceCount returned %d\n-> %s\n", (int)error_id,
cudaGetErrorString(error_id));
exit(EXIT_FAILURE);
}
if (deviceCount == 0) {
printf("> There are no device(s) supporting CUDA\n");
return false;
} else {
printf("> Found %d CUDA Capable Device(s)\n", deviceCount);
}
// Get CUDA device properties
cudaDeviceProp deviceProp;
for (int dev = 0; dev < deviceCount; ++dev) {
cudaGetDeviceProperties(&deviceProp, dev);
STRCPY(devname, NAME_LEN, deviceProp.name);
printf("> GPU %d: %s\n", dev, devname);
}
return true;
}
bool findDXDevice(char *dev_name) {
HRESULT hr = S_OK;
cudaError cuStatus;
// Iterate through the candidate adapters
IDXGIFactory *pFactory;
hr = sFnPtr_CreateDXGIFactory(__uuidof(IDXGIFactory), (void **)(&pFactory));
if (!SUCCEEDED(hr)) {
printf("> No DXGI Factory created.\n");
return false;
}
UINT adapter = 0;
for (; !g_pCudaCapableAdapter; ++adapter) {
// Get a candidate DXGI adapter
IDXGIAdapter *pAdapter = NULL;
hr = pFactory->EnumAdapters(adapter, &pAdapter);
if (FAILED(hr)) {
break; // no compatible adapters found
}
// Query to see if there exists a corresponding compute device
int cuDevice;
cuStatus = cudaD3D10GetDevice(&cuDevice, pAdapter);
printLastCudaError("cudaD3D10GetDevice failed"); // This prints and resets
// the cudaError to
// cudaSuccess
if (cudaSuccess == cuStatus) {
// If so, mark it as the one against which to create our d3d10 device
g_pCudaCapableAdapter = pAdapter;
g_pCudaCapableAdapter->AddRef();
}
pAdapter->Release();
}
printf("> Found %d D3D10 Adapater(s).\n", (int)adapter);
pFactory->Release();
if (!g_pCudaCapableAdapter) {
printf("> Found 0 D3D10 Adapater(s) /w Compute capability.\n");
return false;
}
DXGI_ADAPTER_DESC adapterDesc;
g_pCudaCapableAdapter->GetDesc(&adapterDesc);
wcstombs_s(NULL, dev_name, 256, adapterDesc.Description, 128);
printf("> Found 1 D3D10 Adapater(s) /w Compute capability.\n");
printf("> %s\n", dev_name);
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char *argv[]) {
char device_name[256];
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("%s Starting...\n\n", SDK_name);
if (!findCUDADevice()) // Search for CUDA GPU
{
printf("> CUDA Device NOT found on \"%s\".. Exiting.\n", device_name);
exit(EXIT_SUCCESS);
}
if (!dynlinkLoadD3D10API()) // Search for D3D API (locate drivers, does not
// mean device is found)
{
printf("> D3D10 API libraries NOT found on.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
if (!findDXDevice(device_name)) // Search for D3D Hardware Device
{
printf("> D3D10 Graphics Device NOT found.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
// command line options
if (checkCmdLineFlag(argc, (const char **)argv, "file")) {
g_bQAReadback = true;
getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
}
//
// create window
//
// Register the window class
WNDCLASSEX wc = {sizeof(WNDCLASSEX),
CS_CLASSDC,
MsgProc,
0L,
0L,
GetModuleHandle(NULL),
NULL,
NULL,
NULL,
NULL,
"CUDA SDK",
NULL};
RegisterClassEx(&wc);
// Create the application's window
HWND hWnd = CreateWindow(wc.lpszClassName, "CUDA-SLI Interop, D3D10",
WS_OVERLAPPEDWINDOW, 0, 0, g_WindowWidth,
g_WindowHeight, NULL, NULL, wc.hInstance, NULL);
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
// Initialize Direct3D
if (SUCCEEDED(InitD3D(hWnd)) && SUCCEEDED(InitTextures())) {
CUresult result = CUDA_SUCCESS;
cudaError_t error = cudaSuccess;
// get the list of interop devices
{
unsigned int interopDeviceCount = 0;
int interopDevices[32];
error = cudaD3D10GetDevices(&interopDeviceCount, interopDevices, 32,
g_pd3dDevice, cudaD3D10DeviceListAll);
printLastCudaError("cudaD3D10GetDevices failed"); // This prints and
// resets the cudaError
// to cudaSuccess
AssertOrQuit(cudaSuccess == error);
g_ContextCount = interopDeviceCount;
for (UINT i = 0; i < interopDeviceCount; ++i) {
g_ContextData[i].index = i;
g_ContextData[i].deviceOrdinal = interopDevices[i];
}
}
// Initialize g_ContextCount interop contexts on the device,
// striping across AFR groups
for (UINT i = 0; i < g_ContextCount; ++i) {
printf("Creating context %d on device %d\n", g_ContextData[i].index,
g_ContextData[i].deviceOrdinal);
// create a context
error = cudaD3D10SetDirect3DDevice(g_pd3dDevice,
g_ContextData[i].deviceOrdinal);
AssertOrQuit(cudaSuccess == error);
error = cudaFree(0);
AssertOrQuit(cudaSuccess == error);
// allocate a buffer
// error = cudaMalloc((void**)&g_ContextData[i].buffer, BYTES_PER_PIXEL);
cudaMallocPitch(&g_ContextData[i].cudaLinearMemory, &g_texture_2d.pitch,
g_texture_2d.width * sizeof(float) * 4,
g_texture_2d.height);
getLastCudaError("cudaMallocPitch (g_texture_2d) failed");
cudaMemset(g_ContextData[i].cudaLinearMemory, 1,
g_texture_2d.pitch * g_texture_2d.height);
AssertOrQuit(cudaSuccess == error);
// pop the context
result = cuCtxPopCurrent(&g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
}
// Register the texture with all contexts
for (UINT i = 0; i < g_ContextCount; ++i) {
printf("Registering texture with context %d\n", i);
result = cuCtxPushCurrent(g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
{
// Register the resource
error = cudaGraphicsD3D10RegisterResource(
&g_ContextData[i].cudaResource, g_texture_2d.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError(
"cudaGraphicsD3D10RegisterResource (g_texture_2d) failed");
error = cudaGraphicsResourceSetMapFlags(g_ContextData[i].cudaResource,
cudaD3D10MapFlagsWriteDiscard);
getLastCudaError(
"cudaGraphicsResourceSetMapFlags (g_texture_2d) failed");
AssertOrQuit(cudaSuccess == error);
}
result = cuCtxPopCurrent(&g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
}
}
//
// the main loop
//
while (false == g_bDone) {
Render();
//
// handle I/O
//
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
Render();
if (ref_file) {
for (int count = 0; count < g_iFrameToCompare; count++) {
Render();
}
const char *cur_image_path = "SLID3D10Texture.ppm";
// Save a reference of our current test run image
CheckRenderD3D10::ActiveRenderTargetToPPM(g_pd3dDevice,
cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D10::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
g_bDone = true;
Cleanup();
PostQuitMessage(0);
} else {
g_bPassed = true;
}
}
}
};
// Unregister windows class
UnregisterClass(wc.lpszClassName, wc.hInstance);
//
// and exit
//
printf("> %s running on %s exiting...\n", SDK_name, device_name);
printf(g_bPassed ? "Test images compared OK\n"
: "Test images are Different!\n");
}
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd) {
// Set up the structure used to create the device and swapchain
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = g_WindowWidth;
sd.BufferDesc.Height = g_WindowHeight;
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = hWnd;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
// Create device and swapchain
HRESULT hr = sFnPtr_D3D10CreateDeviceAndSwapChain(
g_pCudaCapableAdapter, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0,
D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice);
AssertOrQuit(SUCCEEDED(hr));
g_pCudaCapableAdapter->Release();
// Create a render target view of the swapchain
ID3D10Texture2D *pBuffer;
hr =
g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID *)&pBuffer);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateRenderTargetView(pBuffer, NULL, &g_pSwapChainRTV);
AssertOrQuit(SUCCEEDED(hr));
pBuffer->Release();
g_pd3dDevice->OMSetRenderTargets(1, &g_pSwapChainRTV, NULL);
// Setup the viewport
D3D10_VIEWPORT vp;
vp.Width = g_WindowWidth;
vp.Height = g_WindowHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDevice->RSSetViewports(1, &vp);
// Setup the effect
{
ID3D10Blob *pCompiledEffect;
ID3D10Blob *pErrors = NULL;
hr = sFnPtr_D3D10CompileEffectFromMemory((void *)g_simpleEffectSrc,
sizeof(g_simpleEffectSrc), NULL,
NULL, // pDefines
NULL, // pIncludes
0, // HLSL flags
0, // FXFlags
&pCompiledEffect, &pErrors);
if (pErrors) {
LPVOID l_pError = NULL;
l_pError = pErrors->GetBufferPointer(); // then cast to a char* to see it
// in the locals window
fprintf(stdout, "Compilation error: \n %s", (char *)l_pError);
}
AssertOrQuit(SUCCEEDED(hr));
hr = sFnPtr_D3D10CreateEffectFromMemory(
pCompiledEffect->GetBufferPointer(), pCompiledEffect->GetBufferSize(),
0, // FXFlags
g_pd3dDevice, NULL, &g_pSimpleEffect);
pCompiledEffect->Release();
g_pSimpleTechnique = g_pSimpleEffect->GetTechniqueByName("Render");
g_pvQuadRect =
g_pSimpleEffect->GetVariableByName("g_vQuadRect")->AsVector();
g_pTexture2D =
g_pSimpleEffect->GetVariableByName("g_Texture2D")->AsShaderResource();
// Setup no Input Layout
g_pd3dDevice->IASetInputLayout(0);
g_pd3dDevice->IASetPrimitiveTopology(
D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
}
D3D10_RASTERIZER_DESC rasterizerState;
rasterizerState.FillMode = D3D10_FILL_SOLID;
rasterizerState.CullMode = D3D10_CULL_FRONT;
rasterizerState.FrontCounterClockwise = false;
rasterizerState.DepthBias = false;
rasterizerState.DepthBiasClamp = 0;
rasterizerState.SlopeScaledDepthBias = 0;
rasterizerState.DepthClipEnable = false;
rasterizerState.ScissorEnable = false;
rasterizerState.MultisampleEnable = false;
rasterizerState.AntialiasedLineEnable = false;
g_pd3dDevice->CreateRasterizerState(&rasterizerState, &g_pRasterState);
g_pd3dDevice->RSSetState(g_pRasterState);
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitTextures()
// Desc: Initializes Direct3D Textures (allocation and initialization)
//-----------------------------------------------------------------------------
HRESULT InitTextures() {
//
// create the D3D resources we'll be using
//
// 2D texture
{
g_texture_2d.width = 768;
g_texture_2d.height = 768;
D3D10_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(D3D10_TEXTURE2D_DESC));
desc.Width = g_texture_2d.width;
desc.Height = g_texture_2d.height;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
desc.SampleDesc.Count = 1;
desc.Usage = D3D10_USAGE_DEFAULT;
desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
if (FAILED(
g_pd3dDevice->CreateTexture2D(&desc, NULL, &g_texture_2d.pTexture)))
return E_FAIL;
if (FAILED(g_pd3dDevice->CreateShaderResourceView(
g_texture_2d.pTexture, NULL, &g_texture_2d.pSRView)))
return E_FAIL;
g_pTexture2D->SetResource(g_texture_2d.pSRView);
}
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
int RunKernels(CudaContextData *currentContextData) {
static float t = 0.0f;
// populate the 2d texture
{
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(
&cuArray, currentContextData->cudaResource, 0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_2d) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_2d(currentContextData->cudaLinearMemory, g_texture_2d.width,
g_texture_2d.height, g_texture_2d.pitch,
g_bQAReadback ? 0.2f : t);
getLastCudaError("cuda_texture_2d failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
cudaMemcpy2DToArray(
cuArray, // dst array
0, 0, // offset
currentContextData->cudaLinearMemory, g_texture_2d.pitch, // src
g_texture_2d.width * 4 * sizeof(float), g_texture_2d.height, // extent
cudaMemcpyDeviceToDevice); // kind
getLastCudaError("cudaMemcpy2DToArray failed");
}
t += 0.1f;
return 0;
}
////////////////////////////////////////////////////////////////////////////////
//! Draw the final result on the screen
////////////////////////////////////////////////////////////////////////////////
void DrawScene() {
// Clear the backbuffer to a black color
float ClearColor[4] = {0.5f, 0.5f, 0.6f, 1.0f};
g_pd3dDevice->ClearRenderTargetView(g_pSwapChainRTV, ClearColor);
//
// draw the 2d texture
//
float quadRect[4] = {-0.98f, -0.98f, 1.96f, 1.96f};
g_pvQuadRect->SetFloatVector((float *)&quadRect);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
// Present the backbuffer contents to the display
g_pSwapChain->Present(0, 0);
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
int Cleanup() {
// unregister the Cuda resources
CUresult result = CUDA_SUCCESS;
cudaError_t error = cudaSuccess;
// Drop the D3D resources' refcounts
// Unregister the texture with all contexts
for (UINT i = 0; i < g_ContextCount; ++i) {
printf("Unregistering texture with context %d\n", i);
result = cuCtxPushCurrent(g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
{
// Register the resource
error = cudaGraphicsUnregisterResource(g_ContextData[i].cudaResource);
AssertOrQuit(cudaSuccess == error);
}
result = cuCtxPopCurrent(&g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
}
// Destroy all contexts
for (UINT i = 0; i < g_ContextCount; ++i) {
printf("Destroying context %d\n", i);
result = cuCtxPushCurrent(g_ContextData[i].context);
AssertOrQuit(CUDA_SUCCESS == result);
}
//
// clean up Direct3D
//
{
// release the resources we created
g_texture_2d.pSRView->Release();
g_texture_2d.pTexture->Release();
if (g_pInputLayout != NULL) g_pInputLayout->Release();
if (g_pSimpleEffect != NULL) g_pSimpleEffect->Release();
if (g_pSwapChainRTV != NULL) g_pSwapChainRTV->Release();
if (g_pSwapChain != NULL) g_pSwapChain->Release();
if (g_pd3dDevice != NULL) g_pd3dDevice->Release();
}
return 0;
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Launches the CUDA kernels to fill in the texture data
//-----------------------------------------------------------------------------
int Render() {
//
// map the resources we've registered so we can access them in Cuda
// - it is most efficient to map and unmap all resources in a single call,
// and to have the map/unmap calls be the boundary between using the GPU
// for Direct3D and Cuda
//
{
cudaStream_t stream = 0;
cudaError_t error = cudaSuccess;
CudaContextData *currentContextData = NULL;
// get the current device ordinal
static int currentDevice = -1;
error = cudaD3D10GetDevices(NULL, &currentDevice, 1, g_pd3dDevice,
cudaD3D10DeviceListCurrentFrame);
printLastCudaError("cudaD3D10GetDevices failed"); // This prints and resets
// the cudaError to
// cudaSuccess
AssertOrQuit(cudaSuccess == error);
static int nextDevice = -1;
// assert that querying the next device in AFR isn't broken
AssertOrQuit(nextDevice == -1 || nextDevice == currentDevice);
error = cudaD3D10GetDevices(NULL, &nextDevice, 1, g_pd3dDevice,
cudaD3D10DeviceListNextFrame);
printLastCudaError("cudaD3D10GetDevices failed"); // This prints and resets
// the cudaError to
// cudaSuccess
AssertOrQuit(cudaSuccess == error);
// choose context data corresponding to the current device ordinal
for (UINT i = 0; i < g_ContextCount; ++i) {
if (currentDevice == g_ContextData[i].deviceOrdinal) {
currentContextData = &g_ContextData[i];
}
}
AssertOrQuit(currentContextData);
CUresult result;
result = cuCtxPushCurrent(currentContextData->context);
AssertOrQuit(CUDA_SUCCESS == result);
cudaGraphicsMapResources(1, &currentContextData->cudaResource, stream);
getLastCudaError("cudaGraphicsMapResources(3) failed");
//
// run kernels which will populate the contents of those textures
//
RunKernels(currentContextData);
//
// unmap the resources
//
cudaGraphicsUnmapResources(1, &currentContextData->cudaResource, stream);
getLastCudaError("cudaGraphicsUnmapResources(3) failed");
CUcontext poppedContext;
result = cuCtxPopCurrent(&poppedContext);
AssertOrQuit(CUDA_SUCCESS == result);
AssertOrQuit(poppedContext == currentContextData->context);
}
//
// draw the scene using them
//
DrawScene();
return 0;
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
static LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam,
LPARAM lParam) {
switch (msg) {
case WM_KEYDOWN:
if (wParam == VK_ESCAPE) {
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
}
break;
case WM_DESTROY:
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
case WM_PAINT:
ValidateRect(hWnd, NULL);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//
// Paint a 2D texture with a moving red/green hatch pattern on a
// strobing blue background. Note that this kernel reads to and
// writes from the texture, hence why this texture was not mapped
// as WriteDiscard.
//
__global__ void cuda_kernel_texture_2d(unsigned char *surface, int width,
int height, size_t pitch, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
float *pixel;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// get a pointer to the pixel at (x,y)
pixel = (float *)(surface + y * pitch) + 4 * x;
// populate it
float value_x = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * x) / width - 1.0f));
float value_y = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * y) / height - 1.0f));
pixel[0] = value_x > 0.5 ? 1 : 0;
pixel[1] = value_y > 0.5 ? 1 : 0;
pixel[2] = 0.5f + 0.5f * cos(t);
pixel[3] = 1; // alpha
for (int i = 0; i < 6; ++i) {
for (int j = 0; j < 4; ++j) {
pixel[j] = sqrt(pixel[j]);
}
}
for (int i = 0; i < 6; ++i) {
for (int j = 0; j < 4; ++j) {
pixel[j] *= pixel[j];
}
}
}
extern "C" void cuda_texture_2d(void *surface, int width, int height,
size_t pitch, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_2d<<<Dg, Db>>>((unsigned char *)surface, width, height,
pitch, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_2d() failed to launch error = %d\n", error);
}
}

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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - VFlockingD3D10 is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

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# VFlockingD3D10 - VFlockingD3D10
## Description
The sample models formation of V-shaped flocks by big birds, such as geese and cranes. The algorithms of such flocking are borrowed from the paper "V-like formations in flocks of artificial birds" from Artificial Life, Vol. 14, No. 2, 2008. The sample has CPU- and GPU-based implementations. Press 'g' to toggle between them. The GPU-based simulation works many times faster than the CPU-based one. The printout in the console window reports the simulation time per step. Press 'r' to reset the initial distribution of birds.
## Key Concepts
Graphics Interop, Data Parallel Algorithms, Physically-Based Simulation, Performance Strategies
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaMemcpy, cudaFree, cudaGetErrorString, cudaGraphicsResourceSetMapFlags, cudaGraphicsResourceGetMappedPointer, cudaGetLastError, cudaGraphicsMapResources, cudaEventSynchronize, cudaGetDeviceProperties, cudaDeviceSynchronize, cudaEventRecord, cudaMemset, cudaGraphicsUnregisterResource, cudaMalloc, cudaEventElapsedTime, cudaGetDeviceCount, cudaEventCreate
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef VFLOCKING_D3D10_H
#define VFLOCKING_D3D10_H
#pragma once
// simulation parameters
struct Params {
float alpha;
float upwashX;
float upwashY;
float wingspan;
float dX;
float dY;
float epsilon;
float lambda; // -0.1073f * wingspan ;
};
#endif

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <helper_cuda.h>
#include <helper_math.h>
#include <VFlockingD3D10.h>
#define PI 3.1415926536f
typedef unsigned int uint;
__device__ bool isInsideQuad_D(float2 pos0, float2 pos1, float width,
float height) {
if (fabs(pos0.x - pos1.x) < 0.5f * width &&
fabs(pos0.y - pos1.y) < 0.5f * height) {
return true;
} else {
return false;
}
}
__device__ bool isInsideBird(float2 pixel, float2 pos, float width,
float height, float radius) {
if (abs(pixel.x - pos.x) < 0.5f * width &&
abs(pixel.y - pos.y) < 0.5f * height ||
(pixel.x - pos.x) * (pixel.x - pos.x) +
(pixel.y - pos.y) * (pixel.y - pos.y) <
radius * radius) {
return true;
} else {
return false;
}
}
__global__ void cuda_kernel_update(float2 *newPos, float2 *curPos,
uint numBirds, bool *hasproxy,
bool *neighbors, bool *rightgoals,
bool *leftgoals, Params *params) {
uint i = blockIdx.x * blockDim.x + threadIdx.x;
if (i >= numBirds) {
return;
}
float minDist = 50000.f;
float2 dij = make_float2(0.f);
if (!hasproxy[i]) {
for (uint j = 0; j < numBirds; j++) {
if (j == i) {
continue;
}
if (leftgoals[i * numBirds + j]) {
dij = params->dX * normalize(curPos[j] - curPos[i]);
break;
}
}
} else {
bool collision = false;
for (uint j = 0; j < numBirds; j++) {
float d;
if (leftgoals[i * numBirds + j]) {
d = curPos[j].x - (params->wingspan + params->lambda) - curPos[i].x;
if (fabs(d) < fabs(minDist)) {
minDist = d;
}
}
if (rightgoals[i * numBirds + j]) {
d = curPos[j].x + (params->wingspan + params->lambda) - curPos[i].x;
if (fabs(d) < fabs(minDist)) {
minDist = d;
}
}
if (neighbors[i * numBirds + j] && !collision) {
if (curPos[j].y >= curPos[i].y &&
curPos[j].y < curPos[i].y + params->epsilon) {
dij.y = -params->dY;
collision = true;
}
}
}
if (fabs(minDist) <= params->dX) {
return;
}
dij.x = minDist > 0 ? params->dX : -params->dX;
}
newPos[i].x = curPos[i].x + dij.x;
newPos[i].y = curPos[i].y + dij.y;
}
__global__ void cuda_kernel_checktriples(float2 *pos, uint numBirds,
bool *hasproxy, bool *neighbors,
bool *rightgoals, bool *leftgoals,
uint3 *triples, Params *params) {
uint ith = blockIdx.x * blockDim.x + threadIdx.x;
if (ith >= numBirds * (numBirds - 1) * (numBirds - 2) / 6) {
return;
}
uint a[3];
a[0] = triples[ith].x;
a[1] = triples[ith].y;
a[2] = triples[ith].z;
uint i, j, x;
for (i = 0; i < 3; i++) {
for (j = 2; j > i; j--) {
if (pos[a[j - 1]].y > pos[a[j]].y) {
x = a[j - 1];
a[j - 1] = a[j];
a[j] = x;
}
}
}
if (hasproxy[a[0]]) {
float a2a1 = pos[a[2]].x - pos[a[1]].x;
if (fabs(a2a1) < 2.f * (params->wingspan + params->lambda))
if (a2a1 >= 0) {
if (leftgoals[a[0] * numBirds + a[2]]) {
leftgoals[a[0] * numBirds + a[2]] = false;
}
if (rightgoals[a[0] * numBirds + a[1]]) {
rightgoals[a[0] * numBirds + a[1]] = false;
}
} else {
if (leftgoals[a[0] * numBirds + a[1]]) {
leftgoals[a[0] * numBirds + a[1]] = false;
}
if (rightgoals[a[0] * numBirds + a[2]]) {
rightgoals[a[0] * numBirds + a[2]] = false;
}
}
} else {
if ((leftgoals[a[0] * numBirds + a[2]]) &&
(leftgoals[a[0] * numBirds + a[1]]))
if ((length(pos[a[1]] - pos[a[0]]) < length(pos[a[2]] - pos[a[0]]))) {
leftgoals[a[0] * numBirds + a[2]] = false;
} else {
leftgoals[a[0] * numBirds + a[1]] = false;
}
}
}
__global__ void cuda_kernel_checkpairs(float2 *pos, uint numBirds,
bool *hasproxy, bool *neighbors,
bool *rightgoals, bool *leftgoals,
uint2 *pairs, Params *params) {
uint i = blockIdx.x * blockDim.x + threadIdx.x;
if (i >= numBirds * (numBirds - 1) / 2) {
return;
}
uint front, back;
if (pos[pairs[i].y].y > pos[pairs[i].x].y) {
front = pairs[i].y;
back = pairs[i].x;
} else {
front = pairs[i].x;
back = pairs[i].y;
}
leftgoals[back * numBirds + front] = true;
rightgoals[back * numBirds + front] = true;
float2 stepback;
stepback.x = pos[front].x;
stepback.y = pos[front].y - 0.5f * params->upwashY;
if (isInsideQuad_D(
pos[back], stepback,
2.f * (params->wingspan + params->lambda + params->upwashX),
params->upwashY)) {
neighbors[back * numBirds + front] = true;
if (!hasproxy[back]) {
hasproxy[back] = true;
}
}
}
extern "C" void cuda_simulate(float2 *newPos, float2 *curPos, uint numBirds,
bool *d_hasproxy, bool *d_neighbors,
bool *d_leftgoals, bool *d_rightgoals,
uint2 *d_pairs, uint3 *d_triples,
Params *d_params) {
cudaError_t error = cudaSuccess;
float tempms;
static float ms = 0.f;
static uint step = 0;
int smallblockSize = 32, midblockSize = 128, bigblockSize = 32;
cudaEvent_t e_start, e_stop;
cudaEventCreate(&e_start);
cudaEventCreate(&e_stop);
cudaEventRecord(e_start, 0);
cudaMemset(d_leftgoals, 0, numBirds * numBirds * sizeof(bool));
cudaMemset(d_rightgoals, 0, numBirds * numBirds * sizeof(bool));
cudaMemset(d_hasproxy, 0, numBirds * sizeof(bool));
cudaMemset(d_neighbors, 0, numBirds * numBirds * sizeof(bool));
dim3 Db = dim3(bigblockSize);
dim3 Dg =
dim3((numBirds * (numBirds - 1) / 2 + bigblockSize - 1) / bigblockSize);
cuda_kernel_checkpairs<<<Dg, Db>>>(curPos, numBirds, d_hasproxy, d_neighbors,
d_rightgoals, d_leftgoals, d_pairs,
d_params);
Db = dim3(midblockSize);
Dg =
dim3((numBirds * (numBirds - 1) * (numBirds - 2) / 6 + bigblockSize - 1) /
bigblockSize);
cuda_kernel_checktriples<<<Dg, Db>>>(curPos, numBirds, d_hasproxy,
d_neighbors, d_rightgoals, d_leftgoals,
d_triples, d_params);
Db = dim3(smallblockSize);
Dg = dim3((numBirds + smallblockSize - 1) / smallblockSize);
cuda_kernel_update<<<Dg, Db>>>(newPos, curPos, numBirds, d_hasproxy,
d_neighbors, d_rightgoals, d_leftgoals,
d_params /*, d_pWingTips */);
cudaDeviceSynchronize();
cudaEventRecord(e_stop, 0);
cudaEventSynchronize(e_stop);
cudaEventElapsedTime(&tempms, e_start, e_stop);
ms += tempms;
if (!(step % 100) && step) {
printf("GPU, step %d \ntime per step %6.3f ms \n", step, ms / 100.f);
ms = 0.f;
}
step++;
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("one of the cuda kernels failed to launch, error = %d\n", error);
}
}

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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - simpleD3D10 is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

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# simpleD3D10 - Simple Direct3D10 (Vertex Array)
## Description
Simple program which demonstrates interoperability between CUDA and Direct3D10. The program generates a vertex array with CUDA and uses Direct3D10 to render the geometry. A Direct3D Capable device is required.
## Key Concepts
Graphics Interop, 3D Graphics
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaGetErrorString, cudaGraphicsResourceGetMappedPointer, cudaGetLastError, cudaGraphicsMapResources, cudaGetDeviceCount, cudaGraphicsUnregisterResource, cudaGetDeviceProperties
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings to fill
* a vertex buffer with CUDA and use Direct3D to render the data.
* Host code.
*/
#pragma warning(disable : 4312)
// Windows System include files
#include <windows.h>
#include <mmsystem.h>
// This header includes all the necessary D3D10 and CUDA includes
#include <dynlink_d3d10.h>
#include <cuda_runtime_api.h>
#include <cuda_d3d10_interop.h>
// includes, project
#include <rendercheck_d3d10.h>
#include <helper_functions.h> // Helper functions for other non-cuda utilities
#include <helper_cuda.h> // CUDA Helper Functions for initialization
#define MAX_EPSILON 10
static char *sSDKSample = "simpleD3D10";
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
IDXGIAdapter *g_pCudaCapableAdapter = NULL; // Adapter to use
ID3D10Device *g_pd3dDevice = NULL; // Our rendering device
IDXGISwapChain *g_pSwapChain = NULL; // The swap chain of the window
ID3D10RenderTargetView *g_pSwapChainRTV =
NULL; // The Render target view on the swap chain ( used for clear)
ID3D10InputLayout *g_pInputLayout = NULL;
ID3D10Effect *g_pSimpleEffect = NULL;
ID3D10EffectTechnique *g_pSimpleTechnique = NULL;
ID3D10EffectMatrixVariable *g_pmWorld = NULL;
ID3D10EffectMatrixVariable *g_pmView = NULL;
ID3D10EffectMatrixVariable *g_pmProjection = NULL;
static const char g_simpleEffectSrc[] =
"matrix g_mWorld;\n"
"matrix g_mView;\n"
"matrix g_mProjection;\n"
"\n"
"struct Fragment{ \n"
" float4 Pos : SV_POSITION;\n"
" float4 Col : TEXCOORD0; };\n"
"\n"
"Fragment VS( float4 Pos : POSITION, float4 Col : COLOR )\n"
"{\n"
" Fragment f;\n"
" f.Pos = mul(Pos, g_mWorld);\n"
" f.Pos = mul(f.Pos, g_mView);\n"
" f.Pos = mul(f.Pos, g_mProjection);\n"
" f.Col = Col;\n"
" return f;\n"
"}\n"
"\n"
"float4 PS( Fragment f ) : SV_Target\n"
"{\n"
" return f.Col;\n"
"}\n"
"\n"
"technique10 Render\n"
"{\n"
" pass P0\n"
" {\n"
" SetVertexShader( CompileShader( vs_4_0, VS() ) );\n"
" SetGeometryShader( NULL );\n"
" SetPixelShader( CompileShader( ps_4_0, PS() ) );\n"
" }\n"
"}\n"
"\n";
ID3D10Buffer *g_pVB = NULL; // Buffer to hold vertices
struct cudaGraphicsResource *cuda_VB_resource; // handles D3D10-CUDA exchange
// testing/tracing function used pervasively in tests. if the condition is
// unsatisfied then spew and fail the function immediately (doing no cleanup)
#define AssertOrQuit(x) \
if (!(x)) { \
fprintf(stdout, "Assert unsatisfied in %s at %s:%d\n", __FUNCTION__, \
__FILE__, __LINE__); \
return 1; \
}
// A structure for our custom vertex type
struct CUSTOMVERTEX {
FLOAT x, y, z; // The untransformed, 3D position for the vertex
DWORD color; // The vertex color
};
const unsigned int g_WindowWidth = 1024;
const unsigned int g_WindowHeight = 1024;
const unsigned int g_MeshWidth = 512;
const unsigned int g_MeshHeight = 512;
const unsigned int g_NumVertices = g_MeshWidth * g_MeshHeight;
bool g_bPassed = true;
int g_iFrameToCompare = 10;
int *pArgc = NULL;
char **pArgv = NULL;
float anim;
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
void runTest(int argc, char **argv, char *ref_file);
void runCuda();
bool SaveResult(int argc, char **argv);
HRESULT InitD3D(HWND hWnd);
HRESULT InitGeometry();
VOID Cleanup();
VOID SetupMatrices();
VOID Render();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// CUDA/D3D10 kernel
extern "C" void simpleD3DKernel(float4 *pos, unsigned int width,
unsigned int height, float time);
#define NAME_LEN 512
bool findCUDADevice() {
int nGraphicsGPU = 0;
int deviceCount = 0;
bool bFoundGraphics = false;
char devname[NAME_LEN];
// This function call returns 0 if there are no CUDA capable devices.
cudaError_t error_id = cudaGetDeviceCount(&deviceCount);
if (error_id != cudaSuccess) {
printf("cudaGetDeviceCount returned %d\n-> %s\n", (int)error_id,
cudaGetErrorString(error_id));
exit(EXIT_FAILURE);
}
if (deviceCount == 0) {
printf("> There are no device(s) supporting CUDA\n");
return false;
} else {
printf("> Found %d CUDA Capable Device(s)\n", deviceCount);
}
// Get CUDA device properties
cudaDeviceProp deviceProp;
for (int dev = 0; dev < deviceCount; ++dev) {
cudaGetDeviceProperties(&deviceProp, dev);
STRCPY(devname, NAME_LEN, deviceProp.name);
printf("> GPU %d: %s\n", dev, devname);
}
return true;
}
bool findDXDevice(char *dev_name) {
HRESULT hr = S_OK;
cudaError cuStatus;
// Iterate through the candidate adapters
IDXGIFactory *pFactory;
hr = sFnPtr_CreateDXGIFactory(__uuidof(IDXGIFactory), (void **)(&pFactory));
if (!SUCCEEDED(hr)) {
printf("> No DXGI Factory created.\n");
return false;
}
UINT adapter = 0;
for (; !g_pCudaCapableAdapter; ++adapter) {
// Get a candidate DXGI adapter
IDXGIAdapter *pAdapter = NULL;
hr = pFactory->EnumAdapters(adapter, &pAdapter);
if (FAILED(hr)) {
break; // no compatible adapters found
}
// Query to see if there exists a corresponding compute device
int cuDevice;
cuStatus = cudaD3D10GetDevice(&cuDevice, pAdapter);
// This prints and resets the cudaError to cudaSuccess
printLastCudaError("cudaD3D10GetDevice failed");
if (cudaSuccess == cuStatus) {
// If so, mark it as the one against which to create our d3d10 device
g_pCudaCapableAdapter = pAdapter;
g_pCudaCapableAdapter->AddRef();
}
pAdapter->Release();
}
printf("> Found %d D3D10 Adapater(s).\n", (int)adapter);
pFactory->Release();
if (!g_pCudaCapableAdapter) {
printf("> Found 0 D3D10 Adapater(s) /w Compute capability.\n");
return false;
}
DXGI_ADAPTER_DESC adapterDesc;
g_pCudaCapableAdapter->GetDesc(&adapterDesc);
wcstombs(dev_name, adapterDesc.Description, 128);
printf("> Found 1 D3D10 Adapater(s) /w Compute capability.\n");
printf("> %s\n", dev_name);
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
char device_name[256];
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("> %s starting...\n", sSDKSample);
if (!findCUDADevice()) { // Search for CUDA GPU
printf("> CUDA Device NOT found on \"%s\".. Exiting.\n", device_name);
exit(EXIT_SUCCESS);
}
// Search for D3D API (locate drivers, does not mean device is found)
if (!dynlinkLoadD3D10API()) {
printf("> D3D10 API libraries NOT found on.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
if (!findDXDevice(device_name)) { // Search for D3D Hardware Device
printf("> D3D10 Graphics Device NOT found.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
if (argc > 1) {
if (checkCmdLineFlag(argc, (const char **)argv, "file")) {
getCmdLineArgumentString(argc, (const char **)argv, "file",
(char **)&ref_file);
}
}
runTest(argc, argv, ref_file);
//
// and exit
//
printf("%s running on %s exiting...\n", sSDKSample, device_name);
printf("%s sample finished returned: %s\n", sSDKSample,
(g_bPassed ? "OK" : "ERROR!"));
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
////////////////////////////////////////////////////////////////////////////////
//! Run a simple test for CUDA
////////////////////////////////////////////////////////////////////////////////
void runTest(int argc, char **argv, char *ref_file) {
// Register the window class
WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"CUDA/D3D10 simpleD3D10", NULL};
RegisterClassEx(&wc);
// Create the application's window
int xBorder = ::GetSystemMetrics(SM_CXSIZEFRAME);
int yMenu = ::GetSystemMetrics(SM_CYMENU);
int yBorder = ::GetSystemMetrics(SM_CYSIZEFRAME);
HWND hWnd = CreateWindow(
wc.lpszClassName, "CUDA/D3D10 simpleD3D10", WS_OVERLAPPEDWINDOW, 0, 0,
g_WindowWidth + 2 * xBorder, g_WindowHeight + 2 * yBorder + yMenu, NULL,
NULL, wc.hInstance, NULL);
// Initialize Direct3D
if (SUCCEEDED(InitD3D(hWnd))) {
// Create the scene geometry
if (SUCCEEDED(InitGeometry())) {
// Initialize interoperability between CUDA and Direct3D
// Register vertex buffer with CUDA
// DEPRECATED: cudaD3D10RegisterResource(g_pVB,
// cudaD3D10RegisterFlagsNone);
cudaGraphicsD3D10RegisterResource(&cuda_VB_resource, g_pVB,
cudaD3D10RegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D10RegisterResource (g_pVB) failed");
// Initialize vertex buffer with CUDA
runCuda();
// Save result
SaveResult(argc, argv);
// Show the window
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
// Enter the message loop
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
Render();
if (ref_file != NULL) {
for (int count = 0; count < g_iFrameToCompare; count++) {
Render();
}
const char *cur_image_path = "simpleD3D10.ppm";
// Save a reference of our current test run image
CheckRenderD3D10::ActiveRenderTargetToPPM(g_pd3dDevice,
cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D10::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
Cleanup();
PostQuitMessage(0);
}
}
}
}
}
// Release D3D Library (after message loop)
dynlinkUnloadD3D10API();
UnregisterClass(wc.lpszClassName, wc.hInstance);
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void runCuda() {
// Map vertex buffer to Cuda
float4 *d_ptr;
// CUDA Map call to the Vertex Buffer and return a pointer
// DEPRECATED: cudaD3D10MapResources(1, (ID3D10Resource **)&g_pVB);
checkCudaErrors(cudaGraphicsMapResources(1, &cuda_VB_resource, 0));
getLastCudaError("cudaGraphicsMapResources failed");
// DEPRECATED: cudaD3D10ResourceGetMappedPointer( (void **)&dptr, g_pVB, 0);
size_t num_bytes;
checkCudaErrors(cudaGraphicsResourceGetMappedPointer(
(void **)&d_ptr, &num_bytes, cuda_VB_resource));
getLastCudaError("cudaGraphicsResourceGetMappedPointer failed");
// Execute kernel
simpleD3DKernel(d_ptr, g_MeshWidth, g_MeshHeight, anim);
// CUDA Map Unmap vertex buffer
// DEPRECATED: cudaD3D10UnmapResources(1, (ID3D10Resource **)&g_pVB);
checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_VB_resource, 0));
getLastCudaError("cudaGraphicsUnmapResource failed");
}
////////////////////////////////////////////////////////////////////////////////
//! Check if the result is correct or write data to file for external
//! regression testing
////////////////////////////////////////////////////////////////////////////////
bool SaveResult(int argc, char **argv) {
// Map vertex buffer
float *data;
if (FAILED(g_pVB->Map(D3D10_MAP_READ, 0,
(void **)&data))) // Lock(0, 0, (void**)&data, 0)))
return false;
// Unmap
g_pVB->Unmap();
// Save result
if (checkCmdLineFlag(argc, (const char **)argv, "regression")) {
// write file for regression test
sdkWriteFile<float>("./data/regression.dat", data, sizeof(CUSTOMVERTEX),
0.0f, false);
}
return true;
}
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd) {
// Set up the structure used to create the device and swapchain
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = g_WindowWidth;
sd.BufferDesc.Height = g_WindowHeight;
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = hWnd;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
// Create device and swapchain
HRESULT hr = sFnPtr_D3D10CreateDeviceAndSwapChain(
g_pCudaCapableAdapter, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0,
D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice);
AssertOrQuit(SUCCEEDED(hr));
g_pCudaCapableAdapter->Release();
// Create a render target view of the swapchain
ID3D10Texture2D *pBuffer;
hr =
g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID *)&pBuffer);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateRenderTargetView(pBuffer, NULL, &g_pSwapChainRTV);
AssertOrQuit(SUCCEEDED(hr));
pBuffer->Release();
g_pd3dDevice->OMSetRenderTargets(1, &g_pSwapChainRTV, NULL);
// Setup the viewport
D3D10_VIEWPORT vp;
vp.Width = g_WindowWidth;
vp.Height = g_WindowHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDevice->RSSetViewports(1, &vp);
// Setup the effect
{
ID3D10Blob *pCompiledEffect;
hr = sFnPtr_D3D10CompileEffectFromMemory((void *)g_simpleEffectSrc,
sizeof(g_simpleEffectSrc), NULL,
NULL, // pDefines
NULL, // pIncludes
0, // HLSL flags
0, // FXFlags
&pCompiledEffect, NULL);
AssertOrQuit(SUCCEEDED(hr));
hr = sFnPtr_D3D10CreateEffectFromMemory(
pCompiledEffect->GetBufferPointer(), pCompiledEffect->GetBufferSize(),
0, // FXFlags
g_pd3dDevice, NULL, &g_pSimpleEffect);
pCompiledEffect->Release();
g_pSimpleTechnique = g_pSimpleEffect->GetTechniqueByName("Render");
// g_pmWorldViewProjection =
// g_pSimpleEffect->GetVariableByName("g_mWorldViewProjection")->AsMatrix();
g_pmWorld = g_pSimpleEffect->GetVariableByName("g_mWorld")->AsMatrix();
g_pmView = g_pSimpleEffect->GetVariableByName("g_mView")->AsMatrix();
g_pmProjection =
g_pSimpleEffect->GetVariableByName("g_mProjection")->AsMatrix();
// Define the input layout
D3D10_INPUT_ELEMENT_DESC layout[] = {
{"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0,
D3D10_INPUT_PER_VERTEX_DATA, 0},
{"COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, 12,
D3D10_INPUT_PER_VERTEX_DATA, 0},
};
UINT numElements = sizeof(layout) / sizeof(layout[0]);
// Create the input layout
D3D10_PASS_DESC PassDesc;
g_pSimpleTechnique->GetPassByIndex(0)->GetDesc(&PassDesc);
hr = g_pd3dDevice->CreateInputLayout(
layout, numElements, PassDesc.pIAInputSignature,
PassDesc.IAInputSignatureSize, &g_pInputLayout);
AssertOrQuit(SUCCEEDED(hr));
// Setup Input Layout, apply effect and draw points
g_pd3dDevice->IASetInputLayout(g_pInputLayout);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_POINTLIST);
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitGeometry()
// Desc: Creates the scene geometry
//-----------------------------------------------------------------------------
HRESULT InitGeometry() {
// Setup buffer desc
D3D10_BUFFER_DESC bufferDesc;
bufferDesc.Usage = D3D10_USAGE_DEFAULT;
bufferDesc.ByteWidth = sizeof(CUSTOMVERTEX) * g_NumVertices;
bufferDesc.BindFlags = D3D10_BIND_VERTEX_BUFFER;
bufferDesc.CPUAccessFlags = 0;
bufferDesc.MiscFlags = 0;
// Create the buffer, no need for sub resource data struct since everything
// will be defined from cuda
if (FAILED(g_pd3dDevice->CreateBuffer(&bufferDesc, NULL, &g_pVB)))
return E_FAIL;
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOID Cleanup() {
if (g_pVB != NULL) {
// Unregister vertex buffer
// DEPRECATED: checkCudaErrors(cudaD3D10UnregisterResource(g_pVB));
cudaGraphicsUnregisterResource(cuda_VB_resource);
getLastCudaError("cudaGraphicsUnregisterResource failed");
g_pVB->Release();
}
if (g_pInputLayout != NULL) g_pInputLayout->Release();
if (g_pSimpleEffect != NULL) g_pSimpleEffect->Release();
if (g_pSwapChainRTV != NULL) g_pSwapChainRTV->Release();
if (g_pSwapChain != NULL) g_pSwapChain->Release();
if (g_pd3dDevice != NULL) g_pd3dDevice->Release();
}
//-----------------------------------------------------------------------------
// Name: SetupMatrices()
// Desc: Sets up the world, view, and projection transform matrices.
//-----------------------------------------------------------------------------
VOID SetupMatrices() {
XMMATRIX matWorld;
matWorld = XMMatrixIdentity();
XMVECTOR vEyePt = {0.0f, 3.0f, -2.0f};
XMVECTOR vLookatPt = {0.0f, 0.0f, 0.0f};
XMVECTOR vUpVec = {0.0f, 1.0f, 0.0f};
XMMATRIX matView;
matView = XMMatrixLookAtLH(vEyePt, vLookatPt, vUpVec);
XMMATRIX matProj;
matProj = XMMatrixPerspectiveFovLH((float)XM_PI / 4.f, 1.0f, 0.01f, 10.0f);
g_pmWorld->SetMatrix((float *)&matWorld);
g_pmView->SetMatrix((float *)&matView);
g_pmProjection->SetMatrix((float *)&matProj);
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
VOID Render() {
// Clear the backbuffer to a black color
float ClearColor[4] = {0, 0, 0, 0};
g_pd3dDevice->ClearRenderTargetView(g_pSwapChainRTV, ClearColor);
// Run CUDA to update vertex positions
runCuda();
// Draw frame
{
// Setup the world, view, and projection matrices
SetupMatrices();
// Render the vertex buffer contents
UINT stride = sizeof(CUSTOMVERTEX);
UINT offset = 0;
g_pd3dDevice->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(g_NumVertices, 0);
}
// Present the backbuffer contents to the display
g_pSwapChain->Present(0, 0);
anim += 0.01f;
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
switch (msg) {
case WM_DESTROY:
case WM_KEYDOWN:
if (msg != WM_KEYDOWN || wParam == 27) {
Cleanup();
PostQuitMessage(0);
return 0;
}
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

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@ -1,85 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings with the
* runtime API.
* Device code.
*/
#ifndef _SIMPLED3D_KERNEL_CU_
#define _SIMPLED3D_KERNEL_CU_
// includes, C string library
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// includes, cuda
#include <cuda.h>
#include <builtin_types.h>
#include <cuda_runtime_api.h>
///////////////////////////////////////////////////////////////////////////////
//! Simple kernel to modify vertex positions in sine wave pattern
//! @param pos pos in global memory
///////////////////////////////////////////////////////////////////////////////
__global__ void kernel(float4 *pos, unsigned int width, unsigned int height,
float time) {
unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
// calculate uv coordinates
float u = x / (float)width;
float v = y / (float)height;
u = u * 2.0f - 1.0f;
v = v * 2.0f - 1.0f;
// calculate simple sine wave pattern
float freq = 4.0f;
float w = sinf(u * freq + time) * cosf(v * freq + time) * 0.5f;
// write output vertex
pos[y * width + x] = make_float4(u, w, v, __int_as_float(0xff00ff00));
}
extern "C" void simpleD3DKernel(float4 *pos, unsigned int width,
unsigned int height, float time) {
cudaError_t error = cudaSuccess;
dim3 block(8, 8, 1);
dim3 grid(width / block.x, height / block.y, 1);
kernel<<<grid, block>>>(pos, width, height, time);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("kernel() failed to launch error = %d\n", error);
}
}
#endif // #ifndef _SIMPLED3D_KERNEL_CU_

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@ -1,46 +0,0 @@
################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - simpleD3D10RenderTarget is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

49
Samples/5_Domain_Specific/simpleD3D10RenderTarget/README.md
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@ -1,49 +0,0 @@
# simpleD3D10RenderTarget - Simple Direct3D10 Render Target
## Description
Simple program which demonstrates interop of rendertargets between Direct3D10 and CUDA. The program uses RenderTarget positions with CUDA and generates a histogram with visualization. A Direct3D10 Capable device is required.
## Key Concepts
Graphics Interop, Texture
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaMemcpy, cudaMalloc, cudaUnbindTexture, cudaGetErrorString, cudaGraphicsResourceGetMappedPointer, cudaGetLastError, cudaGraphicsMapResources, cudaGetDeviceCount, cudaGraphicsUnregisterResource, cudaGraphicsSubResourceGetMappedArray, cudaBindTextureToArray, cudaGetDeviceProperties
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

BIN
Samples/5_Domain_Specific/simpleD3D10RenderTarget/data/ref_simpleD3D10RenderTarget.ppm
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Binary file not shown.

850
Samples/5_Domain_Specific/simpleD3D10RenderTarget/simpleD3D10RenderTarget.cpp
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@ -1,850 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings to fill
* a vertex buffer with CUDA and use Direct3D to render the data.
* Host code.
*/
#pragma warning(disable : 4312)
#include <windows.h>
#include <mmsystem.h>
// this header inclues all the necessary D3D10 includes
#include <dynlink_d3d10.h>
#include <cuda_runtime_api.h>
#include <cuda_d3d10_interop.h>
// includes, project
#include <rendercheck_d3d10.h>
#include <helper_cuda.h>
#include <helper_functions.h>
int g_iFrameToCompare = 10;
bool g_bDone = false;
bool g_bPassed = true;
int *pArgc = NULL;
char **pArgv = NULL;
#define MAX_EPSILON 10
static char *SDK_name = "simpleD3D10RenderTarget";
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
IDXGIAdapter *g_pCudaCapableAdapter = NULL; // Adapter to use
ID3D10Device *g_pd3dDevice = NULL; // Our rendering device
IDXGISwapChain *g_pSwapChain = NULL; // The swap chain of the window
ID3D10RenderTargetView *g_pSwapChainRTV =
NULL; // The Render target view on the swap chain ( used for clear)
ID3D10RasterizerState *g_pRasterState = NULL;
struct Color {
ID3D10Texture2D *pBuffer; // The color buffer
ID3D10RenderTargetView
*pBufferRTV; // The Render target view on the color buffer
ID3D10ShaderResourceView
*pBufferSRV; // The shader resource view on the color buffer
cudaGraphicsResource *cudaResource; // resource of the Buffer on cuda side
int pitch;
cudaArray *pCudaArray; // the data in a cuda view
} g_color;
struct Histogram {
ID3D10Buffer *pBuffer; // Buffer to hold histogram
ID3D10ShaderResourceView *pBufferSRV; // View on the histogram buffer
cudaGraphicsResource *cudaResource; // resource of the Buffer on cuda side
unsigned int *cudaBuffer; // staging buffer to allow cuda to write results
// cudaArray* pCudaArray; // the data in a cuda view
size_t size;
} g_histogram;
ID3D10Effect *g_pDisplayEffect = NULL;
ID3D10EffectTechnique *g_pDisplayTechnique = NULL;
ID3D10EffectScalarVariable *g_pTime = NULL;
static const char g_displayEffectSrc[] =
"float g_Time; \n"
"uint2 g_vGrid = uint2(20,20); \n"
"float4 g_vGridSize = float4(0.05f, 0.05f, 0.046f, 0.046f); \n"
"\n"
"struct Fragment{ \n"
" float4 Pos : SV_POSITION;\n"
" float2 Tex : TEXCOORD0; \n"
" float4 Col : TEXCOORD1; };\n"
"\n"
"Fragment VS( uint instanceId : SV_InstanceID, uint vertexId : SV_VertexID "
")\n"
"{\n"
" Fragment f;\n"
" f.Tex = float2( 1.f*((vertexId == 1) || (vertexId == 3)), 1.f*( "
"vertexId >= 2)); \n"
" \n"
" uint2 cellId = uint2(instanceId % g_vGrid.x, instanceId / "
"g_vGrid.x);\n"
" f.Pos = float4( g_vGridSize.xy*cellId + 0.5f*(g_vGridSize.xy - "
"g_vGridSize.zw) + f.Tex * g_vGridSize.zw, 0, 1);\n"
" f.Pos.xy = (f.Pos.xy*2.f - 1.f);\n"
" \n"
" f.Col = float4( ((g_vGrid.x-1.f) - cellId.x) / (g_vGrid.x-1.f), "
"(cellId.x + (g_vGrid.y-1.f) - cellId.y) / (g_vGrid.x+g_vGrid.y-1.f), "
"cellId.y / (g_vGrid.y-1.f), 1.f);\n"
" f.Col *= float4( 0.5 + 0.5*sin(g_Time), 0.5 + "
"0.5*sin(g_Time)*cos(g_Time), 0.5 + 0.5*cos(g_Time), 1.f);\n"
" return f;\n"
"}\n"
"\n"
"float4 PS( Fragment f ) : SV_Target\n"
"{\n"
" return f.Col;\n"
"}\n"
"\n"
"technique10 Render\n"
"{\n"
" pass P0\n"
" {\n"
" SetVertexShader( CompileShader( vs_4_0, VS() ) );\n"
" SetGeometryShader( NULL );\n"
" SetPixelShader( CompileShader( ps_4_0, PS() ) );\n"
" }\n"
"}\n"
"\n";
ID3D10Effect *g_pCompositeEffect = NULL;
ID3D10EffectTechnique *g_pCompositeTechnique = NULL;
ID3D10EffectVectorVariable *g_pvQuadRect = NULL;
ID3D10EffectScalarVariable *g_pUseCase = NULL;
ID3D10EffectShaderResourceVariable *g_pTexture2D = NULL;
ID3D10EffectShaderResourceVariable *g_pHistogram = NULL;
static const char g_compositeEffectSrc[] =
"float4 g_vQuadRect; \n"
"int g_UseCase; \n"
"Texture2D g_Texture2D; \n"
"Buffer<uint> g_Histogram; \n"
"\n"
"SamplerState samLinear{ \n"
" Filter = MIN_MAG_LINEAR_MIP_POINT; \n"
"};\n"
"\n"
"struct Fragment{ \n"
" float4 Pos : SV_POSITION;\n"
" float3 Tex : TEXCOORD0; \n"
" float2 uv : TEXCOORD1; };\n"
"\n"
"Fragment VS( uint vertexId : SV_VertexID )\n"
"{\n"
" Fragment f;\n"
" f.Tex = float3( 1.f*((vertexId == 1) || (vertexId == 3)), 1.f*( "
"vertexId >= 2), 0.f); \n"
" \n"
" f.Pos = float4( g_vQuadRect.xy + f.Tex * g_vQuadRect.zw, 0, 1);\n"
" \n"
" f.uv = float2( f.Tex.x*255.f, f.Tex.y*50000.f ); \n"
" return f;\n"
"}\n"
"\n"
"float4 PS( Fragment f ) : SV_Target\n"
"{\n"
" if (g_UseCase == 0) \n"
" return g_Texture2D.Sample( samLinear, f.Tex.xy ); \n"
" else if (g_UseCase == 1) { \n"
" uint index = f.uv.x; \n"
" float value = g_Histogram.Load( index ); \n"
" //float value = index * 1000; \n"
" float red = ( value >= f.uv.y ? (0.5f * f.uv.y / value) + 0.5f : "
"0.f ); \n"
" return float4(red, 0, 0, 1); \n"
" } else return float4(f.Tex, 1);\n"
"}\n"
"\n"
"technique10 Render\n"
"{\n"
" pass P0\n"
" {\n"
" SetVertexShader( CompileShader( vs_4_0, VS() ) );\n"
" SetGeometryShader( NULL );\n"
" SetPixelShader( CompileShader( ps_4_0, PS() ) );\n"
" }\n"
"}\n"
"\n";
// testing/tracing function used pervasively in tests. if the condition is
// unsatisfied then spew and fail the function immediately (doing no cleanup)
#define AssertOrQuit(x) \
if (!(x)) { \
fprintf(stdout, "Assert unsatisfied in %s at %s:%d\n", __FUNCTION__, \
__FILE__, __LINE__); \
return 1; \
}
const unsigned int g_WindowWidth = 800;
const unsigned int g_WindowHeight = 800;
const unsigned int g_HistogramSize = 256;
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
void runTest(int argc, char **argv, char *ref_file);
void runCuda();
HRESULT InitD3D(HWND hWnd);
VOID Cleanup();
VOID Render();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// CUDA/D3D10 kernels
extern "C" void checkCudaError();
extern "C" void createHistogramTex(unsigned int *histogram, unsigned int width,
unsigned int height, cudaArray *colorArray);
#define NAME_LEN 512
bool findCUDADevice() {
int nGraphicsGPU = 0;
int deviceCount = 0;
bool bFoundGraphics = false;
char devname[NAME_LEN];
// This function call returns 0 if there are no CUDA capable devices.
cudaError_t error_id = cudaGetDeviceCount(&deviceCount);
if (error_id != cudaSuccess) {
printf("cudaGetDeviceCount returned %d\n-> %s\n", (int)error_id,
cudaGetErrorString(error_id));
exit(EXIT_FAILURE);
}
if (deviceCount == 0) {
printf("> There are no device(s) supporting CUDA\n");
return false;
} else {
printf("> Found %d CUDA Capable Device(s)\n", deviceCount);
}
// Get CUDA device properties
cudaDeviceProp deviceProp;
for (int dev = 0; dev < deviceCount; ++dev) {
cudaGetDeviceProperties(&deviceProp, dev);
STRCPY(devname, NAME_LEN, deviceProp.name);
printf("> GPU %d: %s\n", dev, devname);
}
return true;
}
bool findDXDevice(char *dev_name) {
HRESULT hr = S_OK;
cudaError cuStatus;
// Iterate through the candidate adapters
IDXGIFactory *pFactory;
hr = sFnPtr_CreateDXGIFactory(__uuidof(IDXGIFactory), (void **)(&pFactory));
if (!SUCCEEDED(hr)) {
printf("> No DXGI Factory created.\n");
return false;
}
UINT adapter = 0;
for (; !g_pCudaCapableAdapter; ++adapter) {
// Get a candidate DXGI adapter
IDXGIAdapter *pAdapter = NULL;
hr = pFactory->EnumAdapters(adapter, &pAdapter);
if (FAILED(hr)) {
break; // no compatible adapters found
}
// Query to see if there exists a corresponding compute device
int cuDevice;
cuStatus = cudaD3D10GetDevice(&cuDevice, pAdapter);
printLastCudaError("cudaD3D10GetDevice failed"); // This prints and resets
// the cudaError to
// cudaSuccess
if (cudaSuccess == cuStatus) {
// If so, mark it as the one against which to create our d3d10 device
g_pCudaCapableAdapter = pAdapter;
g_pCudaCapableAdapter->AddRef();
}
pAdapter->Release();
}
printf("> Found %d D3D10 Adapater(s).\n", (int)adapter);
pFactory->Release();
if (!g_pCudaCapableAdapter) {
printf("> Found 0 D3D10 Adapater(s) /w Compute capability.\n");
return false;
}
DXGI_ADAPTER_DESC adapterDesc;
g_pCudaCapableAdapter->GetDesc(&adapterDesc);
wcstombs(dev_name, adapterDesc.Description, 128);
printf("> Found 1 D3D10 Adapater(s) /w Compute capability.\n");
printf("> %s\n", dev_name);
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
char device_name[256];
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("[%s] - Starting...\n", SDK_name);
if (!findCUDADevice()) // Search for CUDA GPU
{
printf("> CUDA Device NOT found on \"%s\".. Exiting.\n", device_name);
exit(EXIT_SUCCESS);
}
if (!dynlinkLoadD3D10API()) // Search for D3D API (locate drivers, does not
// mean device is found)
{
printf("> D3D10 API libraries NOT found.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
if (!findDXDevice(device_name)) // Search for D3D Hardware Device
{
printf("> D3D10 Graphics Device NOT found.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
// command line options
if (argc > 1) {
// automatied build testing harness
if (checkCmdLineFlag(argc, (const char **)argv, "file"))
getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
}
// run D3D10/CUDA test
runTest(argc, argv, ref_file);
//
// and exit
//
printf("%s running on %s exiting...\n", SDK_name, device_name);
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
////////////////////////////////////////////////////////////////////////////////
//! Run a simple test for CUDA
////////////////////////////////////////////////////////////////////////////////
void runTest(int argc, char **argv, char *ref_file) {
// Register the window class
WNDCLASSEX wc = {sizeof(WNDCLASSEX),
CS_CLASSDC,
MsgProc,
0L,
0L,
GetModuleHandle(NULL),
NULL,
NULL,
NULL,
NULL,
"CUDA SDK",
NULL};
RegisterClassEx(&wc);
// Create the application's window
HWND hWnd = CreateWindow(wc.lpszClassName, "CUDA/D3D10 RenderTarget InterOP",
WS_OVERLAPPEDWINDOW, 100, 100, g_WindowWidth,
g_WindowHeight, NULL, NULL, wc.hInstance, NULL);
// Initialize Direct3D
if (SUCCEEDED(InitD3D(hWnd))) {
// Initialize interoperability between CUDA and Direct3D
// Register vertex buffer with CUDA
cudaGraphicsD3D10RegisterResource(&g_histogram.cudaResource,
g_histogram.pBuffer,
cudaGraphicsMapFlagsNone);
getLastCudaError("cudaGraphicsD3D10RegisterResource (g_pHistogram) failed");
// Register color buffer with CUDA
cudaGraphicsD3D10RegisterResource(&g_color.cudaResource, g_color.pBuffer,
cudaGraphicsMapFlagsNone);
getLastCudaError(
"cudaGraphicsD3D10RegisterResource (g_color.pBuffer) failed");
// Show the window
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
}
//
// The main loop
//
while (false == g_bDone) {
Render();
//
// handle I/O
//
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
Render();
if (ref_file) {
for (int count = 0; count < g_iFrameToCompare; count++) {
Render();
}
const char *cur_image_path = "simpleD3D10RenderTarget.ppm";
// Save a reference of our current test run image
CheckRenderD3D10::ActiveRenderTargetToPPM(g_pd3dDevice,
cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D10::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
g_bDone = true;
Cleanup();
PostQuitMessage(0);
} else {
g_bPassed = true;
}
}
}
}
// Release D3D Library (after message loop)
dynlinkUnloadD3D10API();
// Unregister windows class
UnregisterClass(wc.lpszClassName, wc.hInstance);
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void runCuda() {
cudaStream_t stream = 0;
const int nbResources = 2;
cudaGraphicsResource *ppResources[nbResources] = {
g_histogram.cudaResource, g_color.cudaResource,
};
// Map resources for Cuda
checkCudaErrors(cudaGraphicsMapResources(nbResources, ppResources, stream));
getLastCudaError("cudaGraphicsMapResources(2) failed");
// Get pointers
checkCudaErrors(cudaGraphicsResourceGetMappedPointer(
(void **)&g_histogram.cudaBuffer, &g_histogram.size,
g_histogram.cudaResource));
getLastCudaError(
"cudaGraphicsResourceGetMappedPointer (g_color.pBuffer) failed");
cudaGraphicsSubResourceGetMappedArray(&g_color.pCudaArray,
g_color.cudaResource, 0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (g_color.pBuffer) failed");
// Execute kernel
createHistogramTex(g_histogram.cudaBuffer, g_WindowWidth, g_WindowHeight,
g_color.pCudaArray);
checkCudaError();
//
// unmap the resources
//
checkCudaErrors(cudaGraphicsUnmapResources(nbResources, ppResources, stream));
getLastCudaError("cudaGraphicsUnmapResources(2) failed");
}
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd) {
// Set up the structure used to create the device and swapchain
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = g_WindowWidth;
sd.BufferDesc.Height = g_WindowHeight;
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = hWnd;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
// Create device and swapchain
HRESULT hr = sFnPtr_D3D10CreateDeviceAndSwapChain(
g_pCudaCapableAdapter, D3D10_DRIVER_TYPE_HARDWARE, NULL,
0, // D3D10_CREATE_DEVICE_DEBUG,
D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice);
AssertOrQuit(SUCCEEDED(hr));
g_pCudaCapableAdapter->Release();
// Create a render target view of the swapchain
ID3D10Texture2D *pBuffer;
hr =
g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID *)&pBuffer);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateRenderTargetView(pBuffer, NULL, &g_pSwapChainRTV);
AssertOrQuit(SUCCEEDED(hr));
pBuffer->Release();
// Create a color buffer, corresponding render target view and shader resource
// view
D3D10_TEXTURE2D_DESC tex2Ddesc;
ZeroMemory(&tex2Ddesc, sizeof(D3D10_TEXTURE2D_DESC));
tex2Ddesc.Width = g_WindowWidth;
tex2Ddesc.Height = g_WindowHeight;
tex2Ddesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
tex2Ddesc.MipLevels = 1;
tex2Ddesc.ArraySize = 1;
tex2Ddesc.SampleDesc.Count = 1;
tex2Ddesc.Usage = D3D10_USAGE_DEFAULT;
tex2Ddesc.BindFlags = D3D10_BIND_RENDER_TARGET | D3D10_BIND_SHADER_RESOURCE;
hr = g_pd3dDevice->CreateTexture2D(&tex2Ddesc, NULL, &g_color.pBuffer);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateShaderResourceView(g_color.pBuffer, NULL,
&g_color.pBufferSRV);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateRenderTargetView(g_color.pBuffer, NULL,
&g_color.pBufferRTV);
AssertOrQuit(SUCCEEDED(hr));
// Create a buffer which will contain the resulting histogram and the SRV to
// plug it
D3D10_BUFFER_DESC bufferDesc;
bufferDesc.Usage = D3D10_USAGE_DEFAULT;
// NOTE: allocation of more than what is needed to display in the shader
// but this 64 factor is required for CUDA to work with this buffer (see
// BLOCK_N in .cu code...)
bufferDesc.ByteWidth =
sizeof(unsigned int) * g_HistogramSize * 64 /*BLOCK_N*/;
bufferDesc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
bufferDesc.CPUAccessFlags = 0;
bufferDesc.MiscFlags = 0;
// useless values... we could remove this...
unsigned int values[256 * 64];
for (int i = 0; i < 256 * 64; i++) {
values[i] = i;
}
D3D10_SUBRESOURCE_DATA data;
data.pSysMem = values;
data.SysMemPitch = 0;
data.SysMemSlicePitch = 0;
hr = g_pd3dDevice->CreateBuffer(&bufferDesc, &data, &g_histogram.pBuffer);
AssertOrQuit(SUCCEEDED(hr));
D3D10_SHADER_RESOURCE_VIEW_DESC bufferSRVDesc;
bufferSRVDesc.Format = DXGI_FORMAT_R32_UINT;
bufferSRVDesc.ViewDimension = D3D10_SRV_DIMENSION_BUFFER;
bufferSRVDesc.Buffer.ElementOffset = 0;
bufferSRVDesc.Buffer.ElementWidth =
g_HistogramSize; // 4*sizeof(unsigned int);
hr = g_pd3dDevice->CreateShaderResourceView(
g_histogram.pBuffer, &bufferSRVDesc, &g_histogram.pBufferSRV);
AssertOrQuit(SUCCEEDED(hr));
// Create the equivalent as a cuda staging buffer that we'll use to write from
// Cuda. Then we'll copy it to the texture
// cudaMalloc(g_histogram.cudaBuffer, sizeof(float) * g_HistogramSize;
// getLastCudaError("cudaMallocPitch (g_histogram) failed");
// Setup the viewport
D3D10_VIEWPORT vp;
vp.Width = g_WindowWidth;
vp.Height = g_WindowHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDevice->RSSetViewports(1, &vp);
// Setup the effect
{
ID3D10Blob *pErrors = NULL;
ID3D10Blob *pCompiledEffect;
hr = sFnPtr_D3D10CompileEffectFromMemory((void *)g_displayEffectSrc,
sizeof(g_displayEffectSrc), NULL,
NULL, // pDefines
NULL, // pIncludes
0, // HLSL flags
0, // FXFlags
&pCompiledEffect, &pErrors);
if (pErrors) {
LPVOID l_pError = NULL;
l_pError = pErrors->GetBufferPointer(); // then cast to a char* to see it
// in the locals window
fprintf(stdout, "Compilation error: \n %s", (char *)l_pError);
}
AssertOrQuit(SUCCEEDED(hr));
hr = sFnPtr_D3D10CreateEffectFromMemory(
pCompiledEffect->GetBufferPointer(), pCompiledEffect->GetBufferSize(),
0, // FXFlags
g_pd3dDevice, NULL, &g_pDisplayEffect);
pCompiledEffect->Release();
g_pDisplayTechnique = g_pDisplayEffect->GetTechniqueByName("Render");
g_pTime = g_pDisplayEffect->GetVariableByName("g_Time")->AsScalar();
}
// Setup the effect
{
ID3D10Blob *pCompiledEffect;
ID3D10Blob *pErrors = NULL;
hr = sFnPtr_D3D10CompileEffectFromMemory((void *)g_compositeEffectSrc,
sizeof(g_compositeEffectSrc), NULL,
NULL, // pDefines
NULL, // pIncludes
0, // HLSL flags
0, // FXFlags
&pCompiledEffect, &pErrors);
if (pErrors) {
LPVOID l_pError = NULL;
l_pError = pErrors->GetBufferPointer(); // then cast to a char* to see it
// in the locals window
fprintf(stdout, "Compilation error: \n %s", (char *)l_pError);
}
AssertOrQuit(SUCCEEDED(hr));
hr = sFnPtr_D3D10CreateEffectFromMemory(
pCompiledEffect->GetBufferPointer(), pCompiledEffect->GetBufferSize(),
0, // FXFlags
g_pd3dDevice, NULL, &g_pCompositeEffect);
pCompiledEffect->Release();
g_pCompositeTechnique = g_pCompositeEffect->GetTechniqueByName("Render");
g_pvQuadRect =
g_pCompositeEffect->GetVariableByName("g_vQuadRect")->AsVector();
g_pUseCase = g_pCompositeEffect->GetVariableByName("g_UseCase")->AsScalar();
g_pTexture2D = g_pCompositeEffect->GetVariableByName("g_Texture2D")
->AsShaderResource();
g_pTexture2D->SetResource(g_color.pBufferSRV);
g_pHistogram = g_pCompositeEffect->GetVariableByName("g_Histogram")
->AsShaderResource();
g_pHistogram->SetResource(g_histogram.pBufferSRV);
}
D3D10_RASTERIZER_DESC rasterizerState;
rasterizerState.FillMode = D3D10_FILL_SOLID;
rasterizerState.CullMode = D3D10_CULL_FRONT;
rasterizerState.FrontCounterClockwise = false;
rasterizerState.DepthBias = false;
rasterizerState.DepthBiasClamp = 0;
rasterizerState.SlopeScaledDepthBias = 0;
rasterizerState.DepthClipEnable = false;
rasterizerState.ScissorEnable = false;
rasterizerState.MultisampleEnable = false;
rasterizerState.AntialiasedLineEnable = false;
g_pd3dDevice->CreateRasterizerState(&rasterizerState, &g_pRasterState);
g_pd3dDevice->RSSetState(g_pRasterState);
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOID Cleanup() {
if (g_histogram.pBuffer != NULL) {
// Unregister vertex buffer
cudaGraphicsUnregisterResource(g_histogram.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource failed");
g_histogram.pBuffer->Release();
}
if (g_histogram.pBufferSRV != NULL) {
g_histogram.pBufferSRV->Release();
}
if (g_pDisplayEffect != NULL) {
g_pDisplayEffect->Release();
}
if (g_pCompositeEffect != NULL) {
g_pCompositeEffect->Release();
}
if (g_color.pBufferSRV != NULL) {
g_color.pBufferSRV->Release();
}
if (g_color.pBufferRTV != NULL) {
g_color.pBufferRTV->Release();
}
if (g_color.pBuffer != NULL) {
// Unregister vertex buffer
cudaGraphicsUnregisterResource(g_color.cudaResource);
getLastCudaError("cudaD3D10UnregisterResource failed");
g_color.pBuffer->Release();
}
if (g_pRasterState != NULL) {
g_pRasterState->Release();
}
if (g_pSwapChainRTV != NULL) {
g_pSwapChainRTV->Release();
}
if (g_pSwapChain != NULL) {
g_pSwapChain->Release();
}
if (g_pd3dDevice != NULL) {
g_pd3dDevice->Release();
}
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
VOID Render() {
g_pd3dDevice->RSSetState(g_pRasterState);
// Draw frame
{
static float time = 0.f;
time += 0.001f;
g_pTime->SetFloat(time);
// Clear the Color to a black color
float ClearColor[4] = {0.f, 0.1f, 0.1f, 1.f};
g_pd3dDevice->ClearRenderTargetView(g_color.pBufferRTV, ClearColor);
g_pd3dDevice->OMSetRenderTargets(1, &g_color.pBufferRTV, NULL);
g_pd3dDevice->IASetInputLayout(0);
g_pd3dDevice->IASetPrimitiveTopology(
D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
g_pDisplayTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->DrawInstanced(4, 400, 0, 0);
}
// Run CUDA to compute the histogram
runCuda();
// draw the 2d texture
{
// Clear the Color to a black color
float ClearColor[4] = {0, 0, 0, 1.f};
g_pd3dDevice->ClearRenderTargetView(g_pSwapChainRTV, ClearColor);
g_pd3dDevice->OMSetRenderTargets(1, &g_pSwapChainRTV, NULL);
g_pd3dDevice->IASetInputLayout(0);
g_pd3dDevice->IASetPrimitiveTopology(
D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
g_pTexture2D->SetResource(g_color.pBufferSRV);
g_pHistogram->SetResource(g_histogram.pBufferSRV);
g_pUseCase->SetInt(0);
float quadRect1[4] = {-1.0f, -0.8f, 2.0f, 1.8f};
g_pvQuadRect->SetFloatVector((float *)&quadRect1);
g_pCompositeTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
g_pUseCase->SetInt(1);
float quadRect2[4] = {-0.8f, -0.99f, 1.6f, 0.19f};
g_pvQuadRect->SetFloatVector((float *)&quadRect2);
g_pCompositeTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
g_pTexture2D->SetResource(NULL);
g_pHistogram->SetResource(NULL);
g_pCompositeTechnique->GetPassByIndex(0)->Apply(0);
}
// Present the backbuffer contents to the display
g_pSwapChain->Present(0, 0);
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
switch (msg) {
case WM_DESTROY:
case WM_KEYDOWN:
if (msg != WM_KEYDOWN || wParam == 27) {
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
}
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings with the
* runtime API.
* Device code.
*/
#ifndef SIMPLED3D10RENDERTARGET_KERNEL_CU
#define SIMPLED3D10RENDERTARGET_KERNEL_CU
// includes, C string library
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// includes, cuda
#include <cuda.h>
#include <builtin_types.h>
#include <cuda_runtime_api.h>
// includes, project
#include <helper_cuda.h> // includes cuda.h and cuda_runtime_api.h
//#include "checkCudaErrors"
#define BIN_COUNT 256
#define HISTOGRAM_SIZE (BIN_COUNT * sizeof(unsigned int))
texture<uchar4, 2, cudaReadModeElementType> colorTex;
////////////////////////////////////////////////////////////////////////////////
// GPU-specific definitions
////////////////////////////////////////////////////////////////////////////////
// Fast mul on G8x / G9x / G100
#define IMUL(a, b) __mul24(a, b)
// Machine warp size
// G80's warp size is 32 threads
#define WARP_LOG2SIZE 5
// Warps in thread block for histogram256Kernel()
#define WARP_N 6
// Corresponding thread block size in threads for histogram256Kernel()
#define THREAD_N (WARP_N << WARP_LOG2SIZE)
// Total histogram size (in counters) per thread block for histogram256Kernel()
#define BLOCK_MEMORY (WARP_N * BIN_COUNT)
// Thread block count for histogram256Kernel()
#define BLOCK_N 64
////////////////////////////////////////////////////////////////////////////////
// If threadPos == threadIdx.x, there are always 4-way bank conflicts,
// since each group of 16 threads (half-warp) accesses different bytes,
// but only within 4 shared memory banks. Having shuffled bits of threadIdx.x
// as in histogram64GPU(), each half-warp accesses different shared memory banks
// avoiding any bank conflicts at all.
// Refer to the supplied whitepaper for detailed explanations.
////////////////////////////////////////////////////////////////////////////////
__device__ inline void addData256(volatile unsigned int *s_WarpHist,
unsigned int data, unsigned int threadTag) {
unsigned int count;
do {
count = s_WarpHist[data] & 0x07FFFFFFU;
count = threadTag | (count + 1);
s_WarpHist[data] = count;
} while (s_WarpHist[data] != count);
}
////////////////////////////////////////////////////////////////////////////////
// Main histogram calculation kernel
////////////////////////////////////////////////////////////////////////////////
static __global__ void histogramTex256Kernel(unsigned int *d_Result,
unsigned int width,
unsigned int height, int dataN) {
// Current global thread index
const int globalTid = IMUL(blockIdx.x, blockDim.x) + threadIdx.x;
// Total number of threads in the compute grid
const int numThreads = IMUL(blockDim.x, gridDim.x);
// Thread tag for addData256()
// WARP_LOG2SIZE higher bits of counter values are tagged
// by lower WARP_LOG2SIZE threadID bits
const unsigned int threadTag = threadIdx.x << (32 - WARP_LOG2SIZE);
// Shared memory storage for each warp
volatile __shared__ unsigned int s_Hist[BLOCK_MEMORY];
// Current warp shared memory base
const int warpBase = (threadIdx.x >> WARP_LOG2SIZE) * BIN_COUNT;
// Clear shared memory buffer for current thread block before processing
for (int pos = threadIdx.x; pos < BLOCK_MEMORY; pos += blockDim.x)
s_Hist[pos] = 0;
// Cycle through the entire data set, update subhistograms for each warp
__syncthreads();
for (int pos = globalTid; pos < dataN; pos += numThreads) {
// NOTE: check this... Not sure this is what needs to be done
int py = pos / width;
int px = pos - (py * width);
uchar4 data4 = tex2D(colorTex, px, py);
addData256(s_Hist + warpBase, (data4.x), threadTag);
addData256(s_Hist + warpBase, (data4.y), threadTag);
addData256(s_Hist + warpBase, (data4.z), threadTag);
addData256(s_Hist + warpBase, (data4.w), threadTag);
}
__syncthreads();
// Merge per-warp histograms into per-block and write to global memory
for (int pos = threadIdx.x; pos < BIN_COUNT; pos += blockDim.x) {
unsigned int sum = 0;
for (int base = 0; base < BLOCK_MEMORY; base += BIN_COUNT)
sum += s_Hist[base + pos] & 0x07FFFFFFU;
d_Result[blockIdx.x * BIN_COUNT + pos] = sum;
}
}
///////////////////////////////////////////////////////////////////////////////
// Merge BLOCK_N subhistograms of BIN_COUNT bins into final histogram
///////////////////////////////////////////////////////////////////////////////
// gridDim.x == BIN_COUNT
// blockDim.x == BLOCK_N
// blockIdx.x == bin counter processed by current block
// threadIdx.x == subhistogram index
static __global__ void mergeHistogramTex256Kernel(unsigned int *d_Result) {
__shared__ unsigned int data[BLOCK_N];
// Reads are uncoalesced, but this final stage takes
// only a fraction of total processing time
data[threadIdx.x] = d_Result[threadIdx.x * BIN_COUNT + blockIdx.x];
for (int stride = BLOCK_N / 2; stride > 0; stride >>= 1) {
__syncthreads();
if (threadIdx.x < stride) data[threadIdx.x] += data[threadIdx.x + stride];
}
if (threadIdx.x == 0) d_Result[blockIdx.x] = data[0];
}
////////////////////////////////////////////////////////////////////////////////
// Host interface to GPU histogram
////////////////////////////////////////////////////////////////////////////////
extern "C" void checkCudaError() {
cudaError_t err = cudaGetLastError();
if (cudaSuccess != err) {
fprintf(stderr, "Cuda error: %s.\n", cudaGetErrorString(err));
exit(2);
}
}
// Maximum block count for histogram64kernel()
// Limits input data size to 756MB
// const int MAX_BLOCK_N = 16384;
// Internal memory allocation
// const int BLOCK_N2 = 32;
extern "C" void createHistogramTex(unsigned int *h_Result, unsigned int width,
unsigned int height, cudaArray *colorArray) {
cudaBindTextureToArray(colorTex, colorArray);
checkCudaError();
histogramTex256Kernel<<<BLOCK_N, THREAD_N>>>(h_Result, width, height,
width * height / 4);
checkCudaError();
mergeHistogramTex256Kernel<<<BIN_COUNT, BLOCK_N>>>(h_Result);
checkCudaError();
cudaUnbindTexture(colorTex);
checkCudaError();
#if 0
// Dummy fill test
unsigned int toto[256];
for (int i=0; i<256; i++)
{
toto[i] = i * 100;
}
cudaMemcpy(h_Result, toto, HISTOGRAM_SIZE, cudaMemcpyHostToDevice);
#endif
checkCudaError();
}
extern "C" void bindArrayToTexture(cudaArray *pArray) {}
#endif // #ifndef SIMPLED3D10RENDERTARGET_KERNEL_CU

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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - simpleD3D10Texture is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

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# simpleD3D10Texture - Simple D3D10 Texture
## Description
Simple program which demonstrates how to interoperate CUDA with Direct3D10 Texture. The program creates a number of D3D10 Textures (2D, 3D, and CubeMap) which are generated from CUDA kernels. Direct3D then renders the results on the screen. A Direct3D10 Capable device is required.
## Key Concepts
Graphics Interop, Texture
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaMalloc, cudaMallocPitch, cudaGetErrorString, cudaFree, cudaGetLastError, cudaGraphicsMapResources, cudaGetDeviceCount, cudaMemset, cudaGraphicsUnregisterResource, cudaGraphicsSubResourceGetMappedArray, cudaGetDeviceProperties
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings to
* transfer data between CUDA and DX9 2D, CubeMap, and Volume Textures.
*/
#pragma warning(disable : 4312)
#include <windows.h>
#include <mmsystem.h>
// This header inclues all the necessary D3D10 and CUDA includes
#include <dynlink_d3d10.h>
#include <cuda_runtime_api.h>
#include <cuda_d3d10_interop.h>
// includes, project
#include <rendercheck_d3d10.h>
#include <helper_cuda.h> // helper functions for CUDA error checking and initialization
#define MAX_EPSILON 10
static char *SDK_name = "simpleD3D10Texture";
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
IDXGIAdapter *g_pCudaCapableAdapter = NULL; // Adapter to use
ID3D10Device *g_pd3dDevice = NULL; // Our rendering device
IDXGISwapChain *g_pSwapChain = NULL; // The swap chain of the window
ID3D10RenderTargetView *g_pSwapChainRTV =
NULL; // The Render target view on the swap chain ( used for clear)
ID3D10RasterizerState *g_pRasterState = NULL;
ID3D10InputLayout *g_pInputLayout = NULL;
ID3D10Effect *g_pSimpleEffect = NULL;
ID3D10EffectTechnique *g_pSimpleTechnique = NULL;
ID3D10EffectVectorVariable *g_pvQuadRect = NULL;
ID3D10EffectScalarVariable *g_pUseCase = NULL;
ID3D10EffectShaderResourceVariable *g_pTexture2D = NULL;
ID3D10EffectShaderResourceVariable *g_pTexture3D = NULL;
ID3D10EffectShaderResourceVariable *g_pTextureCube = NULL;
static const char g_simpleEffectSrc[] =
"float4 g_vQuadRect; \n"
"int g_UseCase; \n"
"Texture2D g_Texture2D; \n"
"Texture3D g_Texture3D; \n"
"TextureCube g_TextureCube; \n"
"\n"
"SamplerState samLinear{ \n"
" Filter = MIN_MAG_LINEAR_MIP_POINT; \n"
"};\n"
"\n"
"struct Fragment{ \n"
" float4 Pos : SV_POSITION;\n"
" float3 Tex : TEXCOORD0; };\n"
"\n"
"Fragment VS( uint vertexId : SV_VertexID )\n"
"{\n"
" Fragment f;\n"
" f.Tex = float3( 0.f, 0.f, 0.f); \n"
" if (vertexId == 1) f.Tex.x = 1.f; \n"
" else if (vertexId == 2) f.Tex.y = 1.f; \n"
" else if (vertexId == 3) f.Tex.xy = float2(1.f, 1.f); \n"
" \n"
" f.Pos = float4( g_vQuadRect.xy + f.Tex * g_vQuadRect.zw, 0, 1);\n"
" \n"
" if (g_UseCase == 1) { \n"
" if (vertexId == 1) f.Tex.z = 0.5f; \n"
" else if (vertexId == 2) f.Tex.z = 0.5f; \n"
" else if (vertexId == 3) f.Tex.z = 1.f; \n"
" } \n"
" else if (g_UseCase >= 2) { \n"
" f.Tex.xy = f.Tex.xy * 2.f - 1.f; \n"
" } \n"
" return f;\n"
"}\n"
"\n"
"float4 PS( Fragment f ) : SV_Target\n"
"{\n"
" if (g_UseCase == 0) return g_Texture2D.Sample( samLinear, f.Tex.xy ); "
"\n"
" else if (g_UseCase == 1) return g_Texture3D.Sample( samLinear, f.Tex "
"); \n"
" else if (g_UseCase == 2) return g_TextureCube.Sample( samLinear, "
"float3(f.Tex.xy, 1.0) ); \n"
" else if (g_UseCase == 3) return g_TextureCube.Sample( samLinear, "
"float3(f.Tex.xy, -1.0) ); \n"
" else if (g_UseCase == 4) return g_TextureCube.Sample( samLinear, "
"float3(1.0, f.Tex.xy) ); \n"
" else if (g_UseCase == 5) return g_TextureCube.Sample( samLinear, "
"float3(-1.0, f.Tex.xy) ); \n"
" else if (g_UseCase == 6) return g_TextureCube.Sample( samLinear, "
"float3(f.Tex.x, 1.0, f.Tex.y) ); \n"
" else if (g_UseCase == 7) return g_TextureCube.Sample( samLinear, "
"float3(f.Tex.x, -1.0, f.Tex.y) ); \n"
" else return float4(f.Tex, 1);\n"
"}\n"
"\n"
"technique10 Render\n"
"{\n"
" pass P0\n"
" {\n"
" SetVertexShader( CompileShader( vs_4_0, VS() ) );\n"
" SetGeometryShader( NULL );\n"
" SetPixelShader( CompileShader( ps_4_0, PS() ) );\n"
" }\n"
"}\n"
"\n";
// testing/tracing function used pervasively in tests. if the condition is
// unsatisfied
// then spew and fail the function immediately (doing no cleanup)
#define AssertOrQuit(x) \
if (!(x)) { \
fprintf(stdout, "Assert unsatisfied in %s at %s:%d\n", __FUNCTION__, \
__FILE__, __LINE__); \
return 1; \
}
bool g_bDone = false;
bool g_bPassed = true;
const unsigned int g_WindowWidth = 720;
const unsigned int g_WindowHeight = 720;
int g_iFrameToCompare = 10;
int *pArgc = NULL;
char **pArgv = NULL;
// Data structure for 2D texture shared between DX10 and CUDA
struct {
ID3D10Texture2D *pTexture;
ID3D10ShaderResourceView *pSRView;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int width;
int height;
} g_texture_2d;
// Data structure for volume textures shared between DX10 and CUDA
struct {
ID3D10Texture3D *pTexture;
ID3D10ShaderResourceView *pSRView;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int width;
int height;
int depth;
} g_texture_3d;
// Data structure for cube texture shared between DX10 and CUDA
struct {
ID3D10Texture2D *pTexture;
ID3D10ShaderResourceView *pSRView;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int size;
} g_texture_cube;
// The CUDA kernel launchers that get called
extern "C" {
bool cuda_texture_2d(void *surface, size_t width, size_t height, size_t pitch,
float t);
bool cuda_texture_3d(void *surface, int width, int height, int depth,
size_t pitch, size_t pitchslice, float t);
bool cuda_texture_cube(void *surface, int width, int height, size_t pitch,
int face, float t);
}
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd);
HRESULT InitTextures();
void RunKernels();
void DrawScene();
void Cleanup();
void Render();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
#define NAME_LEN 512
bool findCUDADevice() {
int nGraphicsGPU = 0;
int deviceCount = 0;
bool bFoundGraphics = false;
char devname[NAME_LEN];
// This function call returns 0 if there are no CUDA capable devices.
cudaError_t error_id = cudaGetDeviceCount(&deviceCount);
if (error_id != cudaSuccess) {
printf("cudaGetDeviceCount returned %d\n-> %s\n", (int)error_id,
cudaGetErrorString(error_id));
exit(EXIT_FAILURE);
}
if (deviceCount == 0) {
printf("> There are no device(s) supporting CUDA\n");
return false;
} else {
printf("> Found %d CUDA Capable Device(s)\n", deviceCount);
}
// Get CUDA device properties
cudaDeviceProp deviceProp;
for (int dev = 0; dev < deviceCount; ++dev) {
cudaGetDeviceProperties(&deviceProp, dev);
STRCPY(devname, NAME_LEN, deviceProp.name);
printf("> GPU %d: %s\n", dev, devname);
}
return true;
}
bool findDXDevice(char *dev_name) {
HRESULT hr = S_OK;
cudaError cuStatus;
// Iterate through the candidate adapters
IDXGIFactory *pFactory;
hr = sFnPtr_CreateDXGIFactory(__uuidof(IDXGIFactory), (void **)(&pFactory));
if (!SUCCEEDED(hr)) {
printf("> No DXGI Factory created.\n");
return false;
}
UINT adapter = 0;
for (; !g_pCudaCapableAdapter; ++adapter) {
// Get a candidate DXGI adapter
IDXGIAdapter *pAdapter = NULL;
hr = pFactory->EnumAdapters(adapter, &pAdapter);
if (FAILED(hr)) {
break; // no compatible adapters found
}
// Query to see if there exists a corresponding compute device
int cuDevice;
cuStatus = cudaD3D10GetDevice(&cuDevice, pAdapter);
printLastCudaError("cudaD3D10GetDevice failed"); // This prints and resets
// the cudaError to
// cudaSuccess
if (cudaSuccess == cuStatus) {
// If so, mark it as the one against which to create our d3d10 device
g_pCudaCapableAdapter = pAdapter;
g_pCudaCapableAdapter->AddRef();
}
pAdapter->Release();
}
printf("> Found %d D3D10 Adapater(s).\n", (int)adapter);
pFactory->Release();
if (!g_pCudaCapableAdapter) {
printf("> Found 0 D3D10 Adapater(s) /w Compute capability.\n");
return false;
}
DXGI_ADAPTER_DESC adapterDesc;
g_pCudaCapableAdapter->GetDesc(&adapterDesc);
wcstombs_s(NULL, dev_name, 256, adapterDesc.Description, 128);
printf("> Found 1 D3D10 Adapater(s) /w Compute capability.\n");
printf("> %s\n", dev_name);
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char *argv[]) {
char device_name[256];
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("[%s] - Starting...\n", SDK_name);
if (!findCUDADevice()) // Search for CUDA GPU
{
printf("> CUDA Device NOT found on \"%s\".. Exiting.\n", device_name);
exit(EXIT_SUCCESS);
}
// Search for D3D API (locate drivers, does not mean device is found)
if (!dynlinkLoadD3D10API()) {
printf("> D3D10 API libraries NOT found on.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
if (!findDXDevice(device_name)) { // Search for D3D Hardware Device
printf("> D3D10 Graphics Device NOT found.. Exiting.\n");
dynlinkUnloadD3D10API();
exit(EXIT_SUCCESS);
}
// command line options
if (argc > 1) {
// automatied build testing harness
if (checkCmdLineFlag(argc, (const char **)argv, "file"))
getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
}
//
// create window
//
// Register the window class
#if 1
WNDCLASSEX wc = {sizeof(WNDCLASSEX),
CS_CLASSDC,
MsgProc,
0L,
0L,
GetModuleHandle(NULL),
NULL,
NULL,
NULL,
NULL,
"CUDA SDK",
NULL};
RegisterClassEx(&wc);
// Create the application's window
int xBorder = ::GetSystemMetrics(SM_CXSIZEFRAME);
int yMenu = ::GetSystemMetrics(SM_CYMENU);
int yBorder = ::GetSystemMetrics(SM_CYSIZEFRAME);
HWND hWnd = CreateWindow(
wc.lpszClassName, "CUDA/D3D10 Texture InterOP", WS_OVERLAPPEDWINDOW, 0, 0,
g_WindowWidth + 2 * xBorder, g_WindowHeight + 2 * yBorder + yMenu, NULL,
NULL, wc.hInstance, NULL);
#else
static WNDCLASSEX wc = {
sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"CudaD3D9Tex", NULL};
RegisterClassEx(&wc);
HWND hWnd = CreateWindow("CudaD3D9Tex", "CUDA D3D9 Texture Interop",
WS_OVERLAPPEDWINDOW, 0, 0, 800, 320,
GetDesktopWindow(), NULL, wc.hInstance, NULL);
#endif
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
// Initialize Direct3D
if (SUCCEEDED(InitD3D(hWnd)) && SUCCEEDED(InitTextures())) {
// 2D
// register the Direct3D resources that we'll use
// we'll read to and write from g_texture_2d, so don't set any special map
// flags for it
cudaGraphicsD3D10RegisterResource(&g_texture_2d.cudaResource,
g_texture_2d.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D10RegisterResource (g_texture_2d) failed");
// cuda cannot write into the texture directly : the texture is seen as a
// cudaArray and can only be mapped as a texture
// Create a buffer so that cuda can write into it
// pixel fmt is DXGI_FORMAT_R32G32B32A32_FLOAT
cudaMallocPitch(&g_texture_2d.cudaLinearMemory, &g_texture_2d.pitch,
g_texture_2d.width * sizeof(float) * 4,
g_texture_2d.height);
getLastCudaError("cudaMallocPitch (g_texture_2d) failed");
cudaMemset(g_texture_2d.cudaLinearMemory, 1,
g_texture_2d.pitch * g_texture_2d.height);
// CUBE
cudaGraphicsD3D10RegisterResource(&g_texture_cube.cudaResource,
g_texture_cube.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError(
"cudaGraphicsD3D10RegisterResource (g_texture_cube) failed");
// create the buffer. pixel fmt is DXGI_FORMAT_R8G8B8A8_SNORM
cudaMallocPitch(&g_texture_cube.cudaLinearMemory, &g_texture_cube.pitch,
g_texture_cube.size * 4, g_texture_cube.size);
getLastCudaError("cudaMallocPitch (g_texture_cube) failed");
cudaMemset(g_texture_cube.cudaLinearMemory, 1,
g_texture_cube.pitch * g_texture_cube.size);
getLastCudaError("cudaMemset (g_texture_cube) failed");
// 3D
cudaGraphicsD3D10RegisterResource(&g_texture_3d.cudaResource,
g_texture_3d.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D10RegisterResource (g_texture_3d) failed");
// create the buffer. pixel fmt is DXGI_FORMAT_R8G8B8A8_SNORM
// cudaMallocPitch(&g_texture_3d.cudaLinearMemory, &g_texture_3d.pitch,
// g_texture_3d.width * 4, g_texture_3d.height * g_texture_3d.depth);
cudaMalloc(
&g_texture_3d.cudaLinearMemory,
g_texture_3d.width * 4 * g_texture_3d.height * g_texture_3d.depth);
g_texture_3d.pitch = g_texture_3d.width * 4;
getLastCudaError("cudaMallocPitch (g_texture_3d) failed");
cudaMemset(g_texture_3d.cudaLinearMemory, 1,
g_texture_3d.pitch * g_texture_3d.height * g_texture_3d.depth);
getLastCudaError("cudaMemset (g_texture_3d) failed");
} else {
printf("> WARNING: No D3D10 Device found.\n");
g_bPassed = true;
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
//
// the main loop
//
while (false == g_bDone) {
Render();
//
// handle I/O
//
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
Render();
if (ref_file) {
for (int count = 0; count < g_iFrameToCompare; count++) {
Render();
}
const char *cur_image_path = "simpleD3D10Texture.ppm";
// Save a reference of our current test run image
CheckRenderD3D10::ActiveRenderTargetToPPM(g_pd3dDevice,
cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D10::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
g_bDone = true;
Cleanup();
PostQuitMessage(0);
} else {
g_bPassed = true;
}
}
}
};
// Release D3D Library (after message loop)
dynlinkUnloadD3D10API();
// Unregister windows class
UnregisterClass(wc.lpszClassName, wc.hInstance);
//
// and exit
//
printf("> %s running on %s exiting...\n", SDK_name, device_name);
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D(HWND hWnd) {
// Set up the structure used to create the device and swapchain
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = g_WindowWidth;
sd.BufferDesc.Height = g_WindowHeight;
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = hWnd;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
// Create device and swapchain
HRESULT hr = sFnPtr_D3D10CreateDeviceAndSwapChain(
g_pCudaCapableAdapter, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0,
D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice);
AssertOrQuit(SUCCEEDED(hr));
g_pCudaCapableAdapter->Release();
// Create a render target view of the swapchain
ID3D10Texture2D *pBuffer;
hr =
g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID *)&pBuffer);
AssertOrQuit(SUCCEEDED(hr));
hr = g_pd3dDevice->CreateRenderTargetView(pBuffer, NULL, &g_pSwapChainRTV);
AssertOrQuit(SUCCEEDED(hr));
pBuffer->Release();
g_pd3dDevice->OMSetRenderTargets(1, &g_pSwapChainRTV, NULL);
// Setup the viewport
D3D10_VIEWPORT vp;
vp.Width = g_WindowWidth;
vp.Height = g_WindowHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDevice->RSSetViewports(1, &vp);
// Setup the effect
{
ID3D10Blob *pCompiledEffect;
ID3D10Blob *pErrors = NULL;
hr = sFnPtr_D3D10CompileEffectFromMemory((void *)g_simpleEffectSrc,
sizeof(g_simpleEffectSrc), NULL,
NULL, // pDefines
NULL, // pIncludes
0, // HLSL flags
0, // FXFlags
&pCompiledEffect, &pErrors);
if (pErrors) {
LPVOID l_pError = NULL;
l_pError = pErrors->GetBufferPointer(); // then cast to a char* to see it
// in the locals window
fprintf(stdout, "Compilation error: \n %s", (char *)l_pError);
}
AssertOrQuit(SUCCEEDED(hr));
hr = sFnPtr_D3D10CreateEffectFromMemory(
pCompiledEffect->GetBufferPointer(), pCompiledEffect->GetBufferSize(),
0, // FXFlags
g_pd3dDevice, NULL, &g_pSimpleEffect);
pCompiledEffect->Release();
g_pSimpleTechnique = g_pSimpleEffect->GetTechniqueByName("Render");
g_pvQuadRect =
g_pSimpleEffect->GetVariableByName("g_vQuadRect")->AsVector();
g_pUseCase = g_pSimpleEffect->GetVariableByName("g_UseCase")->AsScalar();
g_pTexture2D =
g_pSimpleEffect->GetVariableByName("g_Texture2D")->AsShaderResource();
g_pTexture3D =
g_pSimpleEffect->GetVariableByName("g_Texture3D")->AsShaderResource();
g_pTextureCube =
g_pSimpleEffect->GetVariableByName("g_TextureCube")->AsShaderResource();
// Setup no Input Layout
g_pd3dDevice->IASetInputLayout(0);
g_pd3dDevice->IASetPrimitiveTopology(
D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
}
D3D10_RASTERIZER_DESC rasterizerState;
rasterizerState.FillMode = D3D10_FILL_SOLID;
rasterizerState.CullMode = D3D10_CULL_FRONT;
rasterizerState.FrontCounterClockwise = false;
rasterizerState.DepthBias = false;
rasterizerState.DepthBiasClamp = 0;
rasterizerState.SlopeScaledDepthBias = 0;
rasterizerState.DepthClipEnable = false;
rasterizerState.ScissorEnable = false;
rasterizerState.MultisampleEnable = false;
rasterizerState.AntialiasedLineEnable = false;
g_pd3dDevice->CreateRasterizerState(&rasterizerState, &g_pRasterState);
g_pd3dDevice->RSSetState(g_pRasterState);
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitTextures()
// Desc: Initializes Direct3D Textures (allocation and initialization)
//-----------------------------------------------------------------------------
HRESULT InitTextures() {
//
// create the D3D resources we'll be using
//
// 2D texture
{
g_texture_2d.width = 256;
g_texture_2d.height = 256;
D3D10_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(D3D10_TEXTURE2D_DESC));
desc.Width = g_texture_2d.width;
desc.Height = g_texture_2d.height;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
desc.SampleDesc.Count = 1;
desc.Usage = D3D10_USAGE_DEFAULT;
desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
if (FAILED(
g_pd3dDevice->CreateTexture2D(&desc, NULL, &g_texture_2d.pTexture)))
return E_FAIL;
if (FAILED(g_pd3dDevice->CreateShaderResourceView(
g_texture_2d.pTexture, NULL, &g_texture_2d.pSRView)))
return E_FAIL;
g_pTexture2D->SetResource(g_texture_2d.pSRView);
}
// 3D texture
{
g_texture_3d.width = 64;
g_texture_3d.height = 64;
g_texture_3d.depth = 64;
D3D10_TEXTURE3D_DESC desc;
ZeroMemory(&desc, sizeof(D3D10_TEXTURE3D_DESC));
desc.Width = g_texture_3d.width;
desc.Height = g_texture_3d.height;
desc.Depth = g_texture_3d.depth;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_R8G8B8A8_SNORM;
desc.Usage = D3D10_USAGE_DEFAULT;
desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
if (FAILED(
g_pd3dDevice->CreateTexture3D(&desc, NULL, &g_texture_3d.pTexture)))
return E_FAIL;
if (FAILED(g_pd3dDevice->CreateShaderResourceView(
g_texture_3d.pTexture, NULL, &g_texture_3d.pSRView)))
return E_FAIL;
g_pTexture3D->SetResource(g_texture_3d.pSRView);
}
// cube texture
{
g_texture_cube.size = 64;
D3D10_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(D3D10_TEXTURE2D_DESC));
desc.Width = g_texture_cube.size;
desc.Height = g_texture_cube.size;
desc.MipLevels = 1;
desc.ArraySize = 6;
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D10_USAGE_DEFAULT;
desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
desc.MiscFlags = D3D10_RESOURCE_MISC_TEXTURECUBE;
if (FAILED(g_pd3dDevice->CreateTexture2D(&desc, NULL,
&g_texture_cube.pTexture)))
return E_FAIL;
D3D10_SHADER_RESOURCE_VIEW_DESC SRVDesc;
ZeroMemory(&SRVDesc, sizeof(SRVDesc));
SRVDesc.Format = desc.Format;
SRVDesc.ViewDimension = D3D10_SRV_DIMENSION_TEXTURECUBE;
SRVDesc.TextureCube.MipLevels = desc.MipLevels;
SRVDesc.TextureCube.MostDetailedMip = 0;
if (FAILED(g_pd3dDevice->CreateShaderResourceView(
g_texture_cube.pTexture, &SRVDesc, &g_texture_cube.pSRView)))
return E_FAIL;
g_pTextureCube->SetResource(g_texture_cube.pSRView);
}
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void RunKernels() {
static float t = 0.0f;
// populate the 2d texture
{
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_2d.cudaResource,
0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_2d) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_2d(g_texture_2d.cudaLinearMemory, g_texture_2d.width,
g_texture_2d.height, g_texture_2d.pitch, t);
getLastCudaError("cuda_texture_2d failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
cudaMemcpy2DToArray(
cuArray, // dst array
0, 0, // offset
g_texture_2d.cudaLinearMemory, g_texture_2d.pitch, // src
g_texture_2d.width * 4 * sizeof(float), g_texture_2d.height, // extent
cudaMemcpyDeviceToDevice); // kind
getLastCudaError("cudaMemcpy2DToArray failed");
}
// populate the volume texture
{
size_t pitchSlice = g_texture_3d.pitch * g_texture_3d.height;
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_3d.cudaResource,
0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_3d) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_3d(g_texture_3d.cudaLinearMemory, g_texture_3d.width,
g_texture_3d.height, g_texture_3d.depth, g_texture_3d.pitch,
pitchSlice, t);
getLastCudaError("cuda_texture_3d failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
struct cudaMemcpy3DParms memcpyParams = {0};
memcpyParams.dstArray = cuArray;
memcpyParams.srcPtr.ptr = g_texture_3d.cudaLinearMemory;
memcpyParams.srcPtr.pitch = g_texture_3d.pitch;
memcpyParams.srcPtr.xsize = g_texture_3d.width;
memcpyParams.srcPtr.ysize = g_texture_3d.height;
memcpyParams.extent.width = g_texture_3d.width;
memcpyParams.extent.height = g_texture_3d.height;
memcpyParams.extent.depth = g_texture_3d.depth;
memcpyParams.kind = cudaMemcpyDeviceToDevice;
cudaMemcpy3D(&memcpyParams);
getLastCudaError("cudaMemcpy3D failed");
}
// populate the faces of the cube map
for (int face = 0; face < 6; ++face) {
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_cube.cudaResource,
face, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_cube) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_cube(g_texture_cube.cudaLinearMemory, g_texture_cube.size,
g_texture_cube.size, g_texture_cube.pitch, face, t);
getLastCudaError("cuda_texture_cube failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
cudaMemcpy2DToArray(cuArray, // dst array
0, 0, // offset
g_texture_cube.cudaLinearMemory,
g_texture_cube.pitch, // src
g_texture_cube.size * 4, g_texture_cube.size, // extent
cudaMemcpyDeviceToDevice); // kind
getLastCudaError("cudaMemcpy2DToArray failed");
}
t += 0.01f;
}
////////////////////////////////////////////////////////////////////////////////
//! Draw the final result on the screen
////////////////////////////////////////////////////////////////////////////////
void DrawScene() {
// Clear the backbuffer to a black color
float ClearColor[4] = {0.5f, 0.5f, 0.6f, 1.0f};
g_pd3dDevice->ClearRenderTargetView(g_pSwapChainRTV, ClearColor);
//
// draw the 2d texture
//
g_pUseCase->SetInt(0);
float quadRect[4] = {-0.9f, -0.9f, 0.7f, 0.7f};
g_pvQuadRect->SetFloatVector((float *)&quadRect);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
//
// draw a slice the 3d texture
//
g_pUseCase->SetInt(1);
quadRect[1] = 0.1f;
g_pvQuadRect->SetFloatVector((float *)&quadRect);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
//
// draw the 6 faces of the cube texture
//
float faceRect[4] = {-0.1f, -0.9f, 0.5f, 0.5f};
for (int f = 0; f < 6; f++) {
if (f == 3) {
faceRect[0] += 0.55f;
faceRect[1] = -0.9f;
}
g_pUseCase->SetInt(2 + f);
g_pvQuadRect->SetFloatVector((float *)&faceRect);
g_pSimpleTechnique->GetPassByIndex(0)->Apply(0);
g_pd3dDevice->Draw(4, 0);
faceRect[1] += 0.6f;
}
// Present the backbuffer contents to the display
g_pSwapChain->Present(0, 0);
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
void Cleanup() {
// unregister the Cuda resources
cudaGraphicsUnregisterResource(g_texture_2d.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_2d) failed");
cudaFree(g_texture_2d.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_2d) failed");
cudaGraphicsUnregisterResource(g_texture_cube.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_cube) failed");
cudaFree(g_texture_cube.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_2d) failed");
cudaGraphicsUnregisterResource(g_texture_3d.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_3d) failed");
cudaFree(g_texture_3d.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_2d) failed");
//
// clean up Direct3D
//
{
// release the resources we created
g_texture_2d.pSRView->Release();
g_texture_2d.pTexture->Release();
g_texture_cube.pSRView->Release();
g_texture_cube.pTexture->Release();
g_texture_3d.pSRView->Release();
g_texture_3d.pTexture->Release();
if (g_pInputLayout != NULL) g_pInputLayout->Release();
if (g_pSimpleEffect != NULL) g_pSimpleEffect->Release();
if (g_pSwapChainRTV != NULL) g_pSwapChainRTV->Release();
if (g_pSwapChain != NULL) g_pSwapChain->Release();
if (g_pd3dDevice != NULL) g_pd3dDevice->Release();
}
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Launches the CUDA kernels to fill in the texture data
//-----------------------------------------------------------------------------
void Render() {
//
// map the resources we've registered so we can access them in Cuda
// - it is most efficient to map and unmap all resources in a single call,
// and to have the map/unmap calls be the boundary between using the GPU
// for Direct3D and Cuda
//
static bool doit = true;
if (doit) {
doit = true;
cudaStream_t stream = 0;
const int nbResources = 3;
cudaGraphicsResource *ppResources[nbResources] = {
g_texture_2d.cudaResource, g_texture_3d.cudaResource,
g_texture_cube.cudaResource,
};
cudaGraphicsMapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsMapResources(3) failed");
//
// run kernels which will populate the contents of those textures
//
RunKernels();
//
// unmap the resources
//
cudaGraphicsUnmapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsUnmapResources(3) failed");
}
//
// draw the scene using them
//
DrawScene();
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
static LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam,
LPARAM lParam) {
switch (msg) {
case WM_KEYDOWN:
if (wParam == VK_ESCAPE) {
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
}
break;
case WM_DESTROY:
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
case WM_PAINT:
ValidateRect(hWnd, NULL);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

78
Samples/5_Domain_Specific/simpleD3D10Texture/texture_2d.cu
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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PI 3.1415926536f
/*
* Paint a 2D texture with a moving red/green hatch pattern on a
* strobing blue background. Note that this kernel reads to and
* writes from the texture, hence why this texture was not mapped
* as WriteDiscard.
*/
__global__ void cuda_kernel_texture_2d(unsigned char *surface, int width,
int height, size_t pitch, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
float *pixel;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// get a pointer to the pixel at (x,y)
pixel = (float *)(surface + y * pitch) + 4 * x;
// populate it
float value_x = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * x) / width - 1.0f));
float value_y = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * y) / height - 1.0f));
pixel[0] = 0.5 * pixel[0] + 0.5 * pow(value_x, 3.0f); // red
pixel[1] = 0.5 * pixel[1] + 0.5 * pow(value_y, 3.0f); // green
pixel[2] = 0.5f + 0.5f * cos(t); // blue
pixel[3] = 1; // alpha
}
extern "C" void cuda_texture_2d(void *surface, int width, int height,
size_t pitch, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_2d<<<Dg, Db>>>((unsigned char *)surface, width, height,
pitch, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_2d() failed to launch error = %d\n", error);
}
}

76
Samples/5_Domain_Specific/simpleD3D10Texture/texture_3d.cu
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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* Paint a 3D texture with a gradient in X (blue) and Z (green), and have every
* other Z slice have full red.
*/
__global__ void cuda_kernel_texture_3d(unsigned char *surface, int width,
int height, int depth, size_t pitch,
size_t pitchSlice, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// walk across the Z slices of this texture. it should be noted that
// this is far from optimal data access.
for (int z = 0; z < depth; ++z) {
// get a pointer to this pixel
unsigned char *pixel = surface + z * pitchSlice + y * pitch + 4 * x;
pixel[0] = (unsigned char)(255.f * (0.5f + 0.5f *
cos(t + (x * x + y * y + z * z) * 0.0001f * 3.14f))); // red
pixel[1] = (unsigned char)(255.f * (0.5f + 0.5f *
sin(t + (x * x + y * y + z * z) * 0.0001f * 3.14f))); // green
pixel[2] = (unsigned char)0; // blue
pixel[3] = 255; // alpha
}
}
extern "C" void cuda_texture_3d(void *surface, int width, int height, int depth,
size_t pitch, size_t pitchSlice, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_3d<<<Dg, Db>>>((unsigned char *)surface, width, height,
depth, pitch, pitchSlice, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_3d() failed to launch error = %d\n", error);
}
}

91
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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PI 3.1415926536f
/*
* Paint a 2D surface with a moving bulls-eye pattern. The "face" parameter
* selects
* between 6 different colors to use. We will use a different color on each
* face of a
* cube map.
*/
__global__ void cuda_kernel_texture_cube(char *surface, int width, int height,
size_t pitch, int face, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
unsigned char *pixel;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// get a pointer to this pixel
pixel = (unsigned char *)(surface + y * pitch) + 4 * x;
// populate it
float theta_x = (2.0f * x) / width - 1.0f;
float theta_y = (2.0f * y) / height - 1.0f;
float theta = 2.0f * PI * sqrt(theta_x * theta_x + theta_y * theta_y);
unsigned char value = 255 * (0.6f + 0.4f * cos(theta + t));
pixel[3] = 255; // alpha
if (face % 2) {
pixel[0] = // blue
pixel[1] = // green
pixel[2] = 0.5; // red
pixel[face / 2] = value;
} else {
pixel[0] = // blue
pixel[1] = // green
pixel[2] = value; // red
pixel[face / 2] = 0.5;
}
}
extern "C" void cuda_texture_cube(void *surface, int width, int height,
size_t pitch, int face, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_cube<<<Dg, Db>>>((char *)surface, width, height, pitch,
face, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_cube() failed to launch error = %d\n", error);
}
}

46
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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - simpleD3D9 is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

49
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# simpleD3D9 - Simple Direct3D9 (Vertex Arrays)
## Description
Simple program which demonstrates interoperability between CUDA and Direct3D9. The program generates a vertex array with CUDA and uses Direct3D9 to render the geometry. A Direct3D capable device is required.
## Key Concepts
Graphics Interop
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaGraphicsResourceGetMappedPointer, cudaGetLastError, cudaGraphicsMapResources, cudaGraphicsUnregisterResource
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This example demonstrates how to use the CUDA Direct3D bindings to fill
// a vertex buffer with CUDA and use Direct3D to render the data.
// Host code.
#pragma warning(disable : 4312)
#include <Windows.h>
#include <mmsystem.h>
#pragma warning(disable : 4996) // disable deprecated warning
#include <strsafe.h>
#pragma warning(default : 4996)
#include <cassert>
// includes, cuda
#include <cuda_runtime_api.h>
#include <cuda_d3d9_interop.h>
// includes, project
#include <rendercheck_d3d9.h>
#include <helper_functions.h> // Helper functions for other non-cuda utilities
#include <helper_cuda.h> // CUDA Helper Functions for initialization
#include <DirectXMath.h>
using namespace DirectX;
#define MAX_EPSILON 10
static char *sSDKsample = "simpleD3D9";
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
IDirect3D9Ex *g_pD3D = NULL; // Used to create the D3DDevice
unsigned int g_iAdapter = NULL; // Our adapter
IDirect3DDevice9Ex *g_pD3DDevice = NULL; // Our rendering device
IDirect3DVertexBuffer9 *g_pVB = NULL; // Buffer to hold vertices
struct cudaGraphicsResource *cuda_VB_resource; // handles D3D9-CUDA exchange
D3DDISPLAYMODEEX g_d3ddm;
D3DPRESENT_PARAMETERS g_d3dpp;
bool g_bWindowed = true;
bool g_bDeviceLost = false;
bool g_bPassed = true;
// A structure for our custom vertex type
struct CUSTOMVERTEX {
FLOAT x, y, z; // The untransformed, 3D position for the vertex
DWORD color; // The vertex color
};
// Our custom FVF, which describes our custom vertex structure
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_DIFFUSE)
const unsigned int g_WindowWidth = 512;
const unsigned int g_WindowHeight = 512;
const unsigned int g_MeshWidth = 256;
const unsigned int g_MeshHeight = 256;
const unsigned int g_NumVertices = g_MeshWidth * g_MeshHeight;
bool g_bQAReadback = false;
int g_iFrameToCompare = 10;
int *pArgc = NULL;
char **pArgv = NULL;
float anim;
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
void runTest(int argc, char **argv, char *ref_file);
void runCuda();
bool SaveVBResult(int argc, char **argv);
HRESULT InitD3D9(HWND hWnd);
HRESULT InitD3D9RenderState();
HRESULT InitCUDA();
HRESULT RestoreContextResources();
HRESULT InitVertexBuffer();
HRESULT FreeVertexBuffer();
VOID Cleanup();
VOID SetupMatrices();
HRESULT Render();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// CUDA D3D9 kernel
extern "C" void simpleD3DKernel(float4 *pos, unsigned int width,
unsigned int height, float time);
#define NAME_LEN 512
char device_name[NAME_LEN];
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("> %s starting...\n", sSDKsample);
// command line options
if (argc > 1) {
if (checkCmdLineFlag(argc, (const char **)argv, "file")) {
getCmdLineArgumentString(argc, (const char **)argv, "file",
(char **)&ref_file);
}
}
runTest(argc, argv, ref_file);
//
// and exit
//
printf("%s running on %s exiting...\n", sSDKsample, device_name);
printf("%s sample finished returned: %s\n", sSDKsample,
(g_bPassed ? "OK" : "ERROR!"));
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
////////////////////////////////////////////////////////////////////////////////
//! Run a simple test for CUDA
////////////////////////////////////////////////////////////////////////////////
void runTest(int argc, char **argv, char *ref_file) {
// Register the window class
WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"CUDA/D3D9 simpleD3D9", NULL};
RegisterClassEx(&wc);
// Create the application's window
int xBorder = ::GetSystemMetrics(SM_CXSIZEFRAME);
int yBorder = ::GetSystemMetrics(SM_CYSIZEFRAME);
int yMenu = ::GetSystemMetrics(SM_CYMENU);
HWND hWnd = CreateWindow(
wc.lpszClassName, "CUDA/D3D9 simpleD3D9", WS_OVERLAPPEDWINDOW, 0, 0,
g_WindowWidth + 2 * xBorder, g_WindowHeight + 2 * yBorder + yMenu, NULL,
NULL, wc.hInstance, NULL);
// Initialize Direct3D9
if (SUCCEEDED(InitD3D9(hWnd)) && SUCCEEDED(InitCUDA())) {
// Create the scene geometry
if (SUCCEEDED(InitVertexBuffer())) {
// This is the normal case (D3D9 device is present)
if (!g_bDeviceLost) {
// Initialize D3D9 vertex buffer contents using CUDA kernel
runCuda();
// Save result
SaveVBResult(argc, argv);
// Show the window
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
}
// Enter the message loop
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
Render();
if (ref_file != NULL) {
for (int count = 0; count < g_iFrameToCompare; count++) {
Render();
}
const char *cur_image_path = "simpleD3D9.ppm";
// Save a reference of our current test run image
CheckRenderD3D9::BackbufferToPPM(g_pD3DDevice, cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D9::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
Cleanup();
PostQuitMessage(0);
}
}
}
}
}
UnregisterClass(wc.lpszClassName, wc.hInstance);
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void runCuda() {
HRESULT hr = S_OK;
// Map vertex buffer to Cuda
float4 *d_ptr;
// CUDA Map call to the Vertex Buffer and return a pointer
checkCudaErrors(cudaGraphicsMapResources(1, &cuda_VB_resource, 0));
getLastCudaError("cudaGraphicsMapResources failed");
// This gets a pointer from the Vertex Buffer
size_t num_bytes;
checkCudaErrors(cudaGraphicsResourceGetMappedPointer(
(void **)&d_ptr, &num_bytes, cuda_VB_resource));
getLastCudaError("cudaGraphicsResourceGetMappedPointer failed");
// Execute kernel
simpleD3DKernel(d_ptr, g_MeshWidth, g_MeshHeight, anim);
// CUDA Map Unmap vertex buffer
checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_VB_resource, 0));
getLastCudaError("cudaGraphicsUnmapResource failed");
}
////////////////////////////////////////////////////////////////////////////////
//! Check if the result is correct or write data to file for external
//! regression testing
////////////////////////////////////////////////////////////////////////////////
bool SaveVBResult(int argc, char **argv) {
// Lock vertex buffer
float *data;
if (FAILED(g_pVB->Lock(0, 0, (void **)&data, 0))) {
return false;
}
// Save result
if (checkCmdLineFlag(argc, (const char **)argv, "regression")) {
// write file for regression test
sdkWriteFile<float>("./data/regression.dat", data, sizeof(CUSTOMVERTEX),
0.0f, false);
}
// unlock
if (FAILED(g_pVB->Unlock())) {
return false;
}
return true;
}
//-----------------------------------------------------------------------------
// Name: InitD3D9()
// Desc: Initializes Direct3D9
//-----------------------------------------------------------------------------
HRESULT InitD3D9(HWND hWnd) {
// Create the D3D object.
if (S_OK != Direct3DCreate9Ex(D3D_SDK_VERSION, &g_pD3D)) {
return E_FAIL;
}
D3DADAPTER_IDENTIFIER9 adapterId;
int device;
bool bDeviceFound = false;
printf("\n");
cudaError cuStatus;
for (g_iAdapter = 0; g_iAdapter < g_pD3D->GetAdapterCount(); g_iAdapter++) {
HRESULT hr = g_pD3D->GetAdapterIdentifier(g_iAdapter, 0, &adapterId);
if (FAILED(hr)) {
continue;
}
cuStatus = cudaD3D9GetDevice(&device, adapterId.DeviceName);
// This prints and resets the cudaError to cudaSuccess
printLastCudaError("cudaD3D9GetDevice failed");
printf("> Display Device #%d: \"%s\" %s Direct3D9\n", g_iAdapter,
adapterId.Description,
(cuStatus == cudaSuccess) ? "supports" : "does not support");
if (cudaSuccess == cuStatus) {
bDeviceFound = true;
STRCPY(device_name, NAME_LEN, adapterId.Description);
break;
}
}
// we check to make sure we have found a cuda-compatible D3D device to work on
if (!bDeviceFound) {
printf("\n");
printf(" No CUDA-compatible Direct3D9 device available\n");
printf("PASSED\n");
// destroy the D3D device
g_pD3D->Release();
exit(EXIT_SUCCESS);
}
RECT rc;
GetClientRect(hWnd, &rc);
g_pD3D->GetAdapterDisplayModeEx(g_iAdapter, &g_d3ddm, NULL);
// Set up the structure used to create the D3DDevice
ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
g_d3dpp.Windowed = g_bWindowed;
g_d3dpp.BackBufferCount = 1;
g_d3dpp.hDeviceWindow = hWnd;
g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
g_d3dpp.BackBufferFormat = g_d3ddm.Format;
g_d3dpp.FullScreen_RefreshRateInHz = 0; // set to 60 for fullscreen, and also
// don't forget to set Windowed to
// FALSE
g_d3dpp.PresentationInterval =
D3DPRESENT_INTERVAL_ONE; // D3DPRESENT_DONOTWAIT;
g_d3dpp.BackBufferWidth = g_WindowWidth;
g_d3dpp.BackBufferHeight = g_WindowHeight;
// Create the D3DDevice
if (FAILED(g_pD3D->CreateDeviceEx(g_iAdapter, D3DDEVTYPE_HAL, hWnd,
D3DCREATE_HARDWARE_VERTEXPROCESSING,
&g_d3dpp, NULL, &g_pD3DDevice))) {
return E_FAIL;
}
if (FAILED(InitD3D9RenderState())) {
return E_FAIL;
}
return S_OK;
}
// Initialize the D3D Rendering State
HRESULT InitD3D9RenderState() {
// Turn off culling, so we see the front and back of the triangle
if (FAILED(g_pD3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE))) {
return E_FAIL;
}
// Turn off D3D lighting, since we are providing our own vertex colors
if (FAILED(g_pD3DDevice->SetRenderState(D3DRS_LIGHTING, FALSE))) {
return E_FAIL;
}
return S_OK;
}
HRESULT InitCUDA() {
printf("InitCUDA() g_pD3DDevice = %p\n", g_pD3DDevice);
// Now we need to bind a CUDA context to the DX9 device
// This is the CUDA 2.0 DX9 interface (required for Windows XP and Vista)
cudaD3D9SetDirect3DDevice(g_pD3DDevice);
getLastCudaError("cudaD3D9SetDirect3DDevice failed");
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
//! RestoreContextResourcess
// - this function restores all of the CUDA/D3D resources and contexts
////////////////////////////////////////////////////////////////////////////////
HRESULT RestoreContextResources() {
// Reinitialize D3D9 resources, CUDA resources/contexts
InitCUDA();
InitVertexBuffer();
InitD3D9RenderState();
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitVertexBuffer()
// Desc: Creates the scene geometry (Vertex Buffer)
//-----------------------------------------------------------------------------
HRESULT InitVertexBuffer() {
// Create vertex buffer
if (FAILED(g_pD3DDevice->CreateVertexBuffer(
g_NumVertices * sizeof(CUSTOMVERTEX), 0, D3DFVF_CUSTOMVERTEX,
D3DPOOL_DEFAULT, &g_pVB, NULL))) {
return E_FAIL;
}
// Initialize interoperability between CUDA and Direct3D9
// Register vertex buffer with CUDA
cudaGraphicsD3D9RegisterResource(&cuda_VB_resource, g_pVB,
cudaD3D9RegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D9RegisterResource failed");
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: FreeVertexBuffer()
// Desc: Free's the Vertex Buffer resource
//-----------------------------------------------------------------------------
HRESULT FreeVertexBuffer() {
if (g_pVB != NULL) {
// Unregister vertex buffer
cudaGraphicsUnregisterResource(cuda_VB_resource);
getLastCudaError("cudaGraphicsUnregisterResource failed");
g_pVB->Release();
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOID Cleanup() {
FreeVertexBuffer();
if (g_pD3DDevice != NULL) {
g_pD3DDevice->Release();
}
if (g_pD3D != NULL) {
g_pD3D->Release();
}
}
//-----------------------------------------------------------------------------
// Name: SetupMatrices()
// Desc: Sets up the world, view, and projection transform matrices.
//-----------------------------------------------------------------------------
VOID SetupMatrices() {
// For our world matrix, we will just rotate the object about the y-axis.
XMFLOAT4X4 matWorldFloat;
XMMATRIX matWorld;
matWorld = XMMatrixIdentity();
XMStoreFloat4x4(&matWorldFloat, matWorld);
g_pD3DDevice->SetTransform(D3DTS_WORLD, (D3DMATRIX *)&matWorldFloat);
// Set up our view matrix. A view matrix can be defined given an eye point,
// a point to lookat, and a direction for which way is up. Here, we set the
// eye five units back along the z-axis and up three units, look at the
// origin, and define "up" to be in the y-direction.
XMVECTOR vEyePt = {0.0f, 3.0f, -2.0f};
XMVECTOR vLookatPt = {0.0f, 0.0f, 0.0f};
XMVECTOR vUpVec = {0.0f, 1.0f, 0.0f};
XMMATRIX matView;
XMFLOAT4X4 matViewFloat;
matView = XMMatrixLookAtLH(vEyePt, vLookatPt, vUpVec);
XMStoreFloat4x4(&matViewFloat, matView);
g_pD3DDevice->SetTransform(D3DTS_VIEW, (D3DMATRIX *)&matViewFloat);
// For the projection matrix, we set up a perspective transform (which
// transforms geometry from 3D view space to 2D viewport space, with
// a perspective divide making objects smaller in the distance). To build
// a perpsective transform, we need the field of view (1/4 pi is common),
// the aspect ratio, and the near and far clipping planes (which define at
// what distances geometry should be no longer be rendered).
XMMATRIX matProj;
XMFLOAT4X4 matProjFloat;
matProj = XMMatrixPerspectiveFovLH((float)XM_PI / 4, 1.0f, 1.0f, 100.0f);
XMStoreFloat4x4(&matProjFloat, matProj);
g_pD3DDevice->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *)&matProjFloat);
}
////////////////////////////////////////////////////////////////////////////////
//! DeviceLostHandler
// - this function handles reseting and initialization of the D3D device
// in the event this Device gets Lost
////////////////////////////////////////////////////////////////////////////////
HRESULT DeviceLostHandler() {
HRESULT hr = S_OK;
// test the cooperative level to see if it's okay
// to render
if (FAILED(hr = g_pD3DDevice->TestCooperativeLevel())) {
// if the device was truly lost, (i.e., a fullscreen device just lost
// focus), wait
// until we g_et it back
if (hr == D3DERR_DEVICELOST) {
return S_OK;
}
// eventually, we will g_et this return value,
// indicating that we can now reset the device
if (hr == D3DERR_DEVICENOTRESET) {
// if we are windowed, read the desktop mode and use the same format for
// the back buffer; this effectively turns off color conversion
if (g_bWindowed) {
g_pD3D->GetAdapterDisplayModeEx(g_iAdapter, &g_d3ddm, NULL);
g_d3dpp.BackBufferFormat = g_d3ddm.Format;
}
// now try to reset the device
if (FAILED(hr = g_pD3DDevice->Reset(&g_d3dpp))) {
return hr;
} else {
// This is a common function we use to restore all hardware
// resources/state
RestoreContextResources();
// we have acquired the device
g_bDeviceLost = false;
}
}
}
return hr;
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
HRESULT Render() {
HRESULT hr = S_OK;
// Begin code to handle case where the D3D gets lost
if (g_bDeviceLost) {
if (FAILED(hr = DeviceLostHandler())) {
fprintf(stderr, "DeviceLostHandler FAILED returned %08x\n", hr);
return hr;
}
fprintf(stderr, "Render DeviceLost handler\n");
// test the cooperative level to see if it's okay
// to render
if (FAILED(hr = g_pD3DDevice->TestCooperativeLevel())) {
fprintf(stderr,
"TestCooperativeLevel = %08x failed, will attempt to reset\n",
hr);
// if the device was truly lost, (i.e., a fullscreen device just lost
// focus), wait
// until we g_et it back
if (hr == D3DERR_DEVICELOST) {
fprintf(
stderr,
"TestCooperativeLevel = %08x DeviceLost, will retry next call\n",
hr);
return S_OK;
}
// eventually, we will g_et this return value,
// indicating that we can now reset the device
if (hr == D3DERR_DEVICENOTRESET) {
fprintf(stderr,
"TestCooperativeLevel = %08x will try to RESET the device\n",
hr);
// if we are windowed, read the desktop mode and use the same format for
// the back buffer; this effectively turns off color conversion
if (g_bWindowed) {
g_pD3D->GetAdapterDisplayModeEx(g_iAdapter, &g_d3ddm, NULL);
g_d3dpp.BackBufferFormat = g_d3ddm.Format;
}
// now try to reset the device
if (FAILED(hr = g_pD3DDevice->Reset(&g_d3dpp))) {
fprintf(stderr, "TestCooperativeLevel = %08x RESET device FAILED\n",
hr);
return hr;
} else {
fprintf(stderr, "TestCooperativeLevel = %08x RESET device SUCCESS!\n",
hr);
// Reinitialize D3D9 resources, CUDA resources/contexts
InitCUDA();
InitVertexBuffer();
InitD3D9RenderState();
fprintf(stderr, "TestCooperativeLevel = %08x INIT device SUCCESS!\n",
hr);
// we have acquired the device
g_bDeviceLost = false;
}
}
return hr;
}
}
if (!g_bDeviceLost) {
// Clear the backbuffer to a black color
g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f,
0);
// Run CUDA to update vertex positions
runCuda();
// Begin the scene
if (SUCCEEDED(g_pD3DDevice->BeginScene())) {
// Setup the world, view, and projection matrices
SetupMatrices();
// Render the vertex buffer contents
g_pD3DDevice->SetStreamSource(0, g_pVB, 0, sizeof(CUSTOMVERTEX));
g_pD3DDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
g_pD3DDevice->DrawPrimitive(D3DPT_POINTLIST, 0, g_NumVertices);
// End the scene
g_pD3DDevice->EndScene();
}
// Present the backbuffer contents to the display
hr = g_pD3DDevice->Present(NULL, NULL, NULL, NULL);
if (hr == D3DERR_DEVICELOST) {
fprintf(stderr, "drawScene Present = %08x detected D3D DeviceLost\n", hr);
g_bDeviceLost = true;
FreeVertexBuffer();
}
}
anim += 0.1f;
return hr;
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
switch (msg) {
case WM_DESTROY:
case WM_KEYDOWN:
if (msg != WM_KEYDOWN || wParam == 27) {
Cleanup();
PostQuitMessage(0);
return 0;
}
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

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Samples/5_Domain_Specific/simpleD3D9/simpleD3D9_kernel.cu
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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This example demonstrates how to use the CUDA Direct3D bindings with the
// runtime API.
// Device code.
#ifndef _SIMPLED3D_KERNEL_CU_
#define _SIMPLED3D_KERNEL_CU_
// includes, C string library
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
///////////////////////////////////////////////////////////////////////////////
//! Simple kernel to modify vertex positions in sine wave pattern
//! @param pos pos in global memory
///////////////////////////////////////////////////////////////////////////////
__global__ void kernel(float4 *pos, unsigned int width, unsigned int height,
float time) {
unsigned int x = blockIdx.x * blockDim.x + threadIdx.x;
unsigned int y = blockIdx.y * blockDim.y + threadIdx.y;
// calculate uv coordinates
float u = x / (float)width;
float v = y / (float)height;
u = u * 2.0f - 1.0f;
v = v * 2.0f - 1.0f;
// calculate simple sine wave pattern
float freq = 4.0f;
float w = sinf(u * freq + time) * cosf(v * freq + time) * 0.5f;
// write output vertex
pos[y * width + x] = make_float4(u, w, v, __int_as_float(0xff00ff00));
}
extern "C" void simpleD3DKernel(float4 *pos, unsigned int width,
unsigned int height, float time) {
cudaError_t error = cudaSuccess;
dim3 block(8, 8, 1);
dim3 grid(width / block.x, height / block.y, 1);
kernel<<<grid, block>>>(pos, width, height, time);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("kernel() failed to launch error = %d\n", error);
}
}
#endif // #ifndef _SIMPLED3D_KERNEL_CU_

46
Samples/5_Domain_Specific/simpleD3D9Texture/Makefile
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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Target rules
all: build
build:
$(info >>> WARNING - simpleD3D9Texture is not supported on Linux - waiving sample <<<)
run: build
testrun: build
clean:
clobber: clean

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Samples/5_Domain_Specific/simpleD3D9Texture/README.md
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@ -1,49 +0,0 @@
# simpleD3D9Texture - Simple D3D9 Texture
## Description
Simple program which demonstrates Direct3D9 Texture interoperability with CUDA. The program creates a number of D3D9 Textures (2D, 3D, and CubeMap) which are written to from CUDA kernels. Direct3D then renders the results on the screen. A Direct3D capable device is required.
## Key Concepts
Graphics Interop, Texture
## Supported SM Architectures
[SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus) [SM 8.9 ](https://developer.nvidia.com/cuda-gpus) [SM 9.0 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Windows
## Supported CPU Architecture
x86_64
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaGraphicsUnmapResources, cudaMalloc, cudaMallocPitch, cudaFree, cudaGetLastError, cudaGraphicsMapResources, cudaMemset, cudaGraphicsUnregisterResource, cudaGraphicsSubResourceGetMappedArray
## Dependencies needed to build/run
[DirectX](../../../README.md#directx)
## Prerequisites
Download and install the [CUDA Toolkit 12.5](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
## References (for more details)

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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This example demonstrates how to use the CUDA Direct3D bindings to
* transfer data between CUDA and DX9 2D, CubeMap, and Volume Textures.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
#define WINDOWS_LEAN_AND_MEAN
#include <windows.h>
#endif
// This header inclues all the necessary D3D10 and CUDA includes
#include <cuda_runtime_api.h>
#include <cuda_d3d9_interop.h>
// includes, project
#include <rendercheck_d3d9.h>
#include <helper_cuda.h>
#include <helper_functions.h> // includes cuda.h and cuda_runtime_api.h
#include <cassert>
#define MAX_EPSILON 10
static char *SDK_name = "simpleD3D9Texture";
bool g_bDone = false;
bool g_bPassed = true;
IDirect3D9Ex *g_pD3D; // Used to create the D3DDevice
unsigned int g_iAdapter;
IDirect3DDevice9Ex *g_pD3DDevice;
D3DDISPLAYMODEEX g_d3ddm;
D3DPRESENT_PARAMETERS g_d3dpp;
bool g_bWindowed = true;
bool g_bDeviceLost = false;
const unsigned int g_WindowWidth = 720;
const unsigned int g_WindowHeight = 720;
int g_iFrameToCompare = 10;
int *pArgc = NULL;
char **pArgv = NULL;
// Data structure for 2D texture shared between DX9 and CUDA
struct {
IDirect3DTexture9 *pTexture;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int width;
int height;
} g_texture_2d;
// Data structure for cube texture shared between DX9 and CUDA
struct {
IDirect3DCubeTexture9 *pTexture;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int size;
} g_texture_cube;
// Data structure for volume textures shared between DX9 and CUDA
struct {
IDirect3DVolumeTexture9 *pTexture;
cudaGraphicsResource *cudaResource;
void *cudaLinearMemory;
size_t pitch;
int width;
int height;
int depth;
} g_texture_vol;
// The CUDA kernel launchers that get called
extern "C" {
bool cuda_texture_2d(void *surface, size_t width, size_t height, size_t pitch,
float t);
bool cuda_texture_cube(void *surface, int width, int height, size_t pitch,
int face, float t);
bool cuda_texture_volume(void *surface, int width, int height, int depth,
size_t pitch, size_t pitchslice, float t);
}
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
HRESULT InitD3D9(HWND hWnd);
HRESULT InitCUDA();
HRESULT InitTextures();
HRESULT ReleaseTextures();
HRESULT RegisterD3D9ResourceWithCUDA();
HRESULT DeviceLostHandler();
void RunKernels();
HRESULT DrawScene();
void Cleanup();
void RunCUDA();
LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
#define NAME_LEN 512
char device_name[NAME_LEN];
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char *argv[]) {
char *ref_file = NULL;
pArgc = &argc;
pArgv = argv;
printf("[%s] - Starting...\n", SDK_name);
// command line options
if (argc > 1) {
// automatied build testing harness
if (checkCmdLineFlag(argc, (const char **)argv, "file"))
getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
}
//
// create window
//
// Register the window class
#if 1
WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"CUDA/D3D9 Texture InterOP", NULL};
RegisterClassEx(&wc);
int xBorder = ::GetSystemMetrics(SM_CXSIZEFRAME);
int yMenu = ::GetSystemMetrics(SM_CYMENU);
int yBorder = ::GetSystemMetrics(SM_CYSIZEFRAME);
// Create the application's window (padding by window border for uniform BB
// sizes across OSs)
HWND hWnd = CreateWindow(
wc.lpszClassName, "CUDA/D3D9 Texture InterOP", WS_OVERLAPPEDWINDOW, 0, 0,
g_WindowWidth + 2 * xBorder, g_WindowHeight + 2 * yBorder + yMenu, NULL,
NULL, wc.hInstance, NULL);
#else
static WNDCLASSEX wc = {
sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
"CudaD3D9Tex", NULL};
RegisterClassEx(&wc);
HWND hWnd = CreateWindow("CudaD3D9Tex", "CUDA D3D9 Texture Interop",
WS_OVERLAPPEDWINDOW, 0, 0, 800, 320,
GetDesktopWindow(), NULL, wc.hInstance, NULL);
#endif
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
// Initialize Direct3D
if (SUCCEEDED(InitD3D9(hWnd)) && SUCCEEDED(InitCUDA()) &&
SUCCEEDED(InitTextures())) {
if (!g_bDeviceLost) {
RegisterD3D9ResourceWithCUDA();
}
} else {
printf("\n");
printf(" No CUDA-compatible Direct3D9 device available\n");
printf("WAIVED\n");
exit(EXIT_WAIVED);
}
//
// the main loop
//
while (false == g_bDone) {
RunCUDA();
DrawScene();
//
// handle I/O
//
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) {
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
RunCUDA();
DrawScene();
if (ref_file) {
for (int count = 0; count < g_iFrameToCompare; count++) {
RunCUDA();
DrawScene();
}
const char *cur_image_path = "simpleD3D9Texture.ppm";
// Save a reference of our current test run image
CheckRenderD3D9::BackbufferToPPM(g_pD3DDevice, cur_image_path);
// compare to offical reference image, printing PASS or FAIL.
g_bPassed = CheckRenderD3D9::PPMvsPPM(cur_image_path, ref_file,
argv[0], MAX_EPSILON, 0.15f);
g_bDone = true;
Cleanup();
PostQuitMessage(0);
}
}
}
};
// Unregister windows class
UnregisterClass(wc.lpszClassName, wc.hInstance);
//
// and exit
//
printf("> %s running on %s exiting...\n", SDK_name, device_name);
exit(g_bPassed ? EXIT_SUCCESS : EXIT_FAILURE);
}
//-----------------------------------------------------------------------------
// Name: InitD3D9()
// Desc: Initializes Direct3D9
//-----------------------------------------------------------------------------
HRESULT InitD3D9(HWND hWnd) {
// Create the D3D object.
if (S_OK != Direct3DCreate9Ex(D3D_SDK_VERSION, &g_pD3D)) {
return E_FAIL;
}
D3DADAPTER_IDENTIFIER9 adapterId;
int device;
bool bDeviceFound = false;
printf("\n");
cudaError cuStatus;
for (g_iAdapter = 0; g_iAdapter < g_pD3D->GetAdapterCount(); g_iAdapter++) {
HRESULT hr = g_pD3D->GetAdapterIdentifier(g_iAdapter, 0, &adapterId);
if (FAILED(hr)) {
continue;
}
cuStatus = cudaD3D9GetDevice(&device, adapterId.DeviceName);
// This prints and resets the cudaError to cudaSuccess
printLastCudaError("cudaD3D9GetDevice failed");
printf("> Display Device #%d: \"%s\" %s Direct3D9\n", g_iAdapter,
adapterId.Description,
(cuStatus == cudaSuccess) ? "supports" : "does not support");
if (cudaSuccess == cuStatus) {
bDeviceFound = true;
STRCPY(device_name, NAME_LEN, adapterId.Description);
break;
}
}
// we check to make sure we have found a cuda-compatible D3D device to work on
if (!bDeviceFound) {
printf("\n");
printf(" No CUDA-compatible Direct3D9 device available\n");
printf("PASSED\n");
// destroy the D3D device
g_pD3D->Release();
exit(EXIT_SUCCESS);
}
// Create the D3D Display Device
RECT rc;
GetClientRect(hWnd, &rc);
D3DDISPLAYMODE d3ddm;
g_pD3D->GetAdapterDisplayMode(g_iAdapter, &d3ddm);
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.BackBufferCount = 1;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow = hWnd;
// d3dpp.BackBufferWidth = g_bQAReadback?g_WindowWidth:(rc.right - rc.left);
// d3dpp.BackBufferHeight = g_bQAReadback?g_WindowHeight:(rc.bottom - rc.top);
d3dpp.BackBufferWidth = g_WindowWidth;
d3dpp.BackBufferHeight = g_WindowHeight;
d3dpp.BackBufferFormat = d3ddm.Format;
if (FAILED(g_pD3D->CreateDeviceEx(g_iAdapter, D3DDEVTYPE_HAL, hWnd,
D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp,
NULL, &g_pD3DDevice))) {
return E_FAIL;
}
// We clear the back buffer
g_pD3DDevice->BeginScene();
g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET, 0, 1.0f, 0);
g_pD3DDevice->EndScene();
return S_OK;
}
HRESULT InitCUDA() {
printf("InitCUDA() g_pD3DDevice = %p\n", g_pD3DDevice);
// Now we need to bind a CUDA context to the DX9 device
// This is the CUDA 2.0 DX9 interface (required for Windows XP and Vista)
cudaD3D9SetDirect3DDevice(g_pD3DDevice);
getLastCudaError("cudaD3D9SetDirect3DDevice failed");
return S_OK;
}
HRESULT RegisterD3D9ResourceWithCUDA() {
// 2D
// register the Direct3D resources that we'll use
// we'll read to and write from g_texture_2d, so don't set any special map
// flags for it
cudaGraphicsD3D9RegisterResource(&g_texture_2d.cudaResource,
g_texture_2d.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D9RegisterResource (g_texture_2d) failed");
// cuda cannot write into the texture directly : the texture is seen as a
// cudaArray and can only be mapped as a texture
// Create a buffer so that cuda can write into it
// pixel fmt is DXGI_FORMAT_R32G32B32A32_FLOAT
cudaMallocPitch(&g_texture_2d.cudaLinearMemory, &g_texture_2d.pitch,
g_texture_2d.width * sizeof(float) * 4, g_texture_2d.height);
getLastCudaError("cudaMallocPitch (g_texture_2d) failed");
cudaMemset(g_texture_2d.cudaLinearMemory, 1,
g_texture_2d.pitch * g_texture_2d.height);
// CUBE
cudaGraphicsD3D9RegisterResource(&g_texture_cube.cudaResource,
g_texture_cube.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D9RegisterResource (g_texture_cube) failed");
// create the buffer. pixel fmt is DXGI_FORMAT_R8G8B8A8_SNORM
cudaMallocPitch(&g_texture_cube.cudaLinearMemory, &g_texture_cube.pitch,
g_texture_cube.size * 4, g_texture_cube.size);
getLastCudaError("cudaMallocPitch (g_texture_cube) failed");
cudaMemset(g_texture_cube.cudaLinearMemory, 1,
g_texture_cube.pitch * g_texture_cube.size);
getLastCudaError("cudaMemset (g_texture_cube) failed");
// 3D
cudaGraphicsD3D9RegisterResource(&g_texture_vol.cudaResource,
g_texture_vol.pTexture,
cudaGraphicsRegisterFlagsNone);
getLastCudaError("cudaGraphicsD3D9RegisterResource (g_texture_vol) failed");
// create the buffer. pixel fmt is DXGI_FORMAT_R8G8B8A8_SNORM
// cudaMallocPitch(&g_texture_vol.cudaLinearMemory, &g_texture_vol.pitch,
// g_texture_vol.width * 4, g_texture_vol.height * g_texture_vol.depth);
cudaMalloc(
&g_texture_vol.cudaLinearMemory,
g_texture_vol.width * 4 * g_texture_vol.height * g_texture_vol.depth);
g_texture_vol.pitch = g_texture_vol.width * 4;
getLastCudaError("cudaMallocPitch (g_texture_vol) failed");
cudaMemset(g_texture_vol.cudaLinearMemory, 1,
g_texture_vol.pitch * g_texture_vol.height * g_texture_vol.depth);
getLastCudaError("cudaMemset (g_texture_vol) failed");
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitTextures()
// Desc: Initializes Direct3D Textures (allocation and initialization)
//-----------------------------------------------------------------------------
HRESULT InitTextures() {
//
// create the D3D resources we'll be using
//
// 2D texture
g_texture_2d.width = 256;
g_texture_2d.height = 256;
if (FAILED(g_pD3DDevice->CreateTexture(
g_texture_2d.width, g_texture_2d.height, 1, 0, D3DFMT_A32B32G32R32F,
D3DPOOL_DEFAULT, &g_texture_2d.pTexture, NULL))) {
return E_FAIL;
}
// cube texture
g_texture_cube.size = 64;
if (FAILED(g_pD3DDevice->CreateCubeTexture(g_texture_cube.size, 1, 0,
D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT,
&g_texture_cube.pTexture, NULL))) {
return E_FAIL;
}
// 3D texture
g_texture_vol.width = 64;
g_texture_vol.height = 64;
g_texture_vol.depth = 32;
if (FAILED(g_pD3DDevice->CreateVolumeTexture(
g_texture_vol.width, g_texture_vol.height, g_texture_vol.depth, 1, 0,
D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &g_texture_vol.pTexture, NULL))) {
return E_FAIL;
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: ReleaseTextures()
// Desc: Release Direct3D Textures (free-ing)
//-----------------------------------------------------------------------------
HRESULT ReleaseTextures() {
// unregister the Cuda resources
cudaGraphicsUnregisterResource(g_texture_2d.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_2d) failed");
cudaFree(g_texture_2d.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_2d) failed");
cudaGraphicsUnregisterResource(g_texture_cube.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_cube) failed");
cudaFree(g_texture_cube.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_2d) failed");
cudaGraphicsUnregisterResource(g_texture_vol.cudaResource);
getLastCudaError("cudaGraphicsUnregisterResource (g_texture_vol) failed");
cudaFree(g_texture_vol.cudaLinearMemory);
getLastCudaError("cudaFree (g_texture_vol) failed");
//
// clean up Direct3D
//
{
// release the resources we created
g_texture_2d.pTexture->Release();
g_texture_cube.pTexture->Release();
g_texture_vol.pTexture->Release();
}
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void RunKernels() {
static float t = 0.0f;
// populate the 2d texture
{
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_2d.cudaResource,
0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_2d) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_2d(g_texture_2d.cudaLinearMemory, g_texture_2d.width,
g_texture_2d.height, g_texture_2d.pitch, t);
getLastCudaError("cuda_texture_2d failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
cudaMemcpy2DToArray(
cuArray, // dst array
0, 0, // offset
g_texture_2d.cudaLinearMemory, g_texture_2d.pitch, // src
g_texture_2d.width * 4 * sizeof(float), g_texture_2d.height, // extent
cudaMemcpyDeviceToDevice); // kind
getLastCudaError("cudaMemcpy2DToArray failed");
}
// populate the volume texture
{
size_t pitchSlice = g_texture_vol.pitch * g_texture_vol.height;
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_vol.cudaResource,
0, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_3d) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_volume(g_texture_vol.cudaLinearMemory, g_texture_vol.width,
g_texture_vol.height, g_texture_vol.depth,
g_texture_vol.pitch, pitchSlice, t);
getLastCudaError("cuda_texture_3d failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
struct cudaMemcpy3DParms memcpyParams = {0};
memcpyParams.dstArray = cuArray;
memcpyParams.srcPtr.ptr = g_texture_vol.cudaLinearMemory;
memcpyParams.srcPtr.pitch = g_texture_vol.pitch;
memcpyParams.srcPtr.xsize = g_texture_vol.width;
memcpyParams.srcPtr.ysize = g_texture_vol.height;
memcpyParams.extent.width = g_texture_vol.width;
memcpyParams.extent.height = g_texture_vol.height;
memcpyParams.extent.depth = g_texture_vol.depth;
memcpyParams.kind = cudaMemcpyDeviceToDevice;
cudaMemcpy3D(&memcpyParams);
getLastCudaError("cudaMemcpy3D failed");
}
// populate the faces of the cube map
for (int face = 0; face < 6; ++face) {
cudaArray *cuArray;
cudaGraphicsSubResourceGetMappedArray(&cuArray, g_texture_cube.cudaResource,
face, 0);
getLastCudaError(
"cudaGraphicsSubResourceGetMappedArray (cuda_texture_cube) failed");
// kick off the kernel and send the staging buffer cudaLinearMemory as an
// argument to allow the kernel to write to it
cuda_texture_cube(g_texture_cube.cudaLinearMemory, g_texture_cube.size,
g_texture_cube.size, g_texture_cube.pitch, face, t);
getLastCudaError("cuda_texture_cube failed");
// then we want to copy cudaLinearMemory to the D3D texture, via its mapped
// form : cudaArray
cudaMemcpy2DToArray(cuArray, // dst array
0, 0, // offset
g_texture_cube.cudaLinearMemory,
g_texture_cube.pitch, // src
g_texture_cube.size * 4, g_texture_cube.size, // extent
cudaMemcpyDeviceToDevice); // kind
getLastCudaError("cudaMemcpy2DToArray failed");
}
t += 0.1f;
}
/*{
static float t = 0.0f;
// populate the 2d texture
{
void* pData;
size_t pitch;
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPointer(&pData,
g_texture_2d.pTexture, 0, 0) );
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPitch(&pitch, NULL,
g_texture_2d.pTexture, 0, 0) );
cuda_texture_2d(pData, g_texture_2d.width, g_texture_2d.height, pitch,
t);
}
// populate the faces of the cube map
for (int face = 0; face < 6; ++face)
{
void* pData;
size_t pitch;
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPointer(&pData,
g_texture_cube.pTexture, face, 0) );
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPitch(&pitch, NULL,
g_texture_cube.pTexture, face, 0) );
cuda_texture_cube(pData, g_texture_cube.size, g_texture_cube.size,
pitch, face, t);
}
// populate the volume texture
{
void* pData;
size_t pitch;
size_t pitchSlice;
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPointer(&pData,
g_texture_vol.pTexture, 0, 0) );
checkCudaErrorsNoSync ( cudaD3D9ResourceGetMappedPitch(&pitch,
&pitchSlice, g_texture_vol.pTexture, 0, 0) );
cuda_texture_volume(pData, g_texture_vol.width, g_texture_vol.height,
g_texture_vol.depth, pitch, pitchSlice);
}
t += 0.1f;
}*/
////////////////////////////////////////////////////////////////////////////////
//! RestoreContextResources
// - this function restores all of the CUDA/D3D resources and contexts
////////////////////////////////////////////////////////////////////////////////
HRESULT RestoreContextResources() {
// Reinitialize D3D9 resources, CUDA resources/contexts
InitCUDA();
InitTextures();
RegisterD3D9ResourceWithCUDA();
return S_OK;
}
////////////////////////////////////////////////////////////////////////////////
//! DeviceLostHandler
// - this function handles reseting and initialization of the D3D device
// in the event this Device gets Lost
////////////////////////////////////////////////////////////////////////////////
HRESULT DeviceLostHandler() {
HRESULT hr = S_OK;
fprintf(stderr, "-> Starting DeviceLostHandler() \n");
// test the cooperative level to see if it's okay
// to render
if (FAILED(hr = g_pD3DDevice->TestCooperativeLevel())) {
fprintf(stderr,
"TestCooperativeLevel = %08x failed, will attempt to reset\n", hr);
// if the device was truly lost, (i.e., a fullscreen device just lost
// focus), wait
// until we g_et it back
if (hr == D3DERR_DEVICELOST) {
fprintf(stderr,
"TestCooperativeLevel = %08x DeviceLost, will retry next call\n",
hr);
return S_OK;
}
// eventually, we will g_et this return value,
// indicating that we can now reset the device
if (hr == D3DERR_DEVICENOTRESET) {
fprintf(stderr,
"TestCooperativeLevel = %08x will try to RESET the device\n", hr);
// if we are windowed, read the desktop mode and use the same format for
// the back buffer; this effectively turns off color conversion
if (g_bWindowed) {
g_pD3D->GetAdapterDisplayModeEx(g_iAdapter, &g_d3ddm, NULL);
g_d3dpp.BackBufferFormat = g_d3ddm.Format;
}
// now try to reset the device
if (FAILED(hr = g_pD3DDevice->Reset(&g_d3dpp))) {
fprintf(stderr, "TestCooperativeLevel = %08x RESET device FAILED\n",
hr);
return hr;
} else {
fprintf(stderr, "TestCooperativeLevel = %08x RESET device SUCCESS!\n",
hr);
// This is a common function we use to restore all hardware
// resources/state
RestoreContextResources();
fprintf(stderr, "TestCooperativeLevel = %08x INIT device SUCCESS!\n",
hr);
// we have acquired the device
g_bDeviceLost = false;
}
}
}
return hr;
}
////////////////////////////////////////////////////////////////////////////////
//! Draw the final result on the screen
////////////////////////////////////////////////////////////////////////////////
HRESULT DrawScene() {
HRESULT hr = S_OK;
if (g_bDeviceLost) {
if (FAILED(hr = DeviceLostHandler())) {
fprintf(stderr, "DeviceLostHandler FAILED returned %08x\n", hr);
return hr;
}
}
if (!g_bDeviceLost) {
//
// we will use this index and vertex data throughout
//
unsigned int IB[6] = {
0, 1, 2, 0, 2, 3,
};
struct VertexStruct {
float position[3];
float texture[3];
};
//
// initialize the scene
//
D3DVIEWPORT9 viewport_window = {0, 0, 672, 192, 0, 1};
g_pD3DDevice->SetViewport(&viewport_window);
g_pD3DDevice->BeginScene();
g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET, 0, 1.0f, 0);
g_pD3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
g_pD3DDevice->SetRenderState(D3DRS_LIGHTING, FALSE);
g_pD3DDevice->SetFVF(D3DFVF_XYZ | D3DFVF_TEX1 | D3DFVF_TEXCOORDSIZE3(0));
//
// draw the 2d texture
//
VertexStruct VB[4] = {
{ {-1,-1,0,}, {0,0,0,}, },
{ { 1,-1,0,}, {1,0,0,}, },
{ { 1, 1,0,}, {1,1,0,}, },
{ {-1, 1,0,}, {0,1,0,}, },
};
D3DVIEWPORT9 viewport = {32, 32, 256, 256, 0, 1};
g_pD3DDevice->SetViewport(&viewport);
g_pD3DDevice->SetTexture(0, g_texture_2d.pTexture);
g_pD3DDevice->DrawIndexedPrimitiveUP(D3DPT_TRIANGLELIST, 0, 4, 2, IB,
D3DFMT_INDEX32, VB,
sizeof(VertexStruct));
//
// draw the Z-positive side of the cube texture
//
VertexStruct VB_Zpos[4] = {
{ {-1,-1,0,}, {-1,-1, 0.5f,}, },
{ { 1,-1,0,}, { 1,-1, 0.5f,}, },
{ { 1, 1,0,}, { 1, 1, 0.5f,}, },
{ {-1, 1,0,}, {-1, 1, 0.5f,}, },
};
viewport.Y += viewport.Height + 32;
g_pD3DDevice->SetViewport(&viewport);
g_pD3DDevice->SetTexture(0, g_texture_cube.pTexture);
g_pD3DDevice->DrawIndexedPrimitiveUP(D3DPT_TRIANGLELIST, 0, 4, 2, IB,
D3DFMT_INDEX32, VB_Zpos,
sizeof(VertexStruct));
//
// draw the Z-negative side of the cube texture
//
VertexStruct VB_Zneg[4] = {
{ {-1,-1,0,}, { 1,-1,-0.5f,}, },
{ { 1,-1,0,}, {-1,-1,-0.5f,}, },
{ { 1, 1,0,}, {-1, 1,-0.5f,}, },
{ {-1, 1,0,}, { 1, 1,-0.5f,}, },
};
viewport.X += viewport.Width + 32;
g_pD3DDevice->SetViewport(&viewport);
g_pD3DDevice->SetTexture(0, g_texture_cube.pTexture);
g_pD3DDevice->DrawIndexedPrimitiveUP(D3DPT_TRIANGLELIST, 0, 4, 2, IB,
D3DFMT_INDEX32, VB_Zneg,
sizeof(VertexStruct));
//
// draw a slice the volume texture
//
VertexStruct VB_Zslice[4] = {
{ {-1,-1,0,}, {0,0,0,}, },
{ { 1,-1,0,}, {1,0,0,}, },
{ { 1, 1,0,}, {1,1,1,}, },
{ {-1, 1,0,}, {0,1,1,}, },
};
viewport.Y -= viewport.Height + 32;
g_pD3DDevice->SetViewport(&viewport);
g_pD3DDevice->SetTexture(0, g_texture_vol.pTexture);
g_pD3DDevice->DrawIndexedPrimitiveUP(D3DPT_TRIANGLELIST, 0, 4, 2, IB,
D3DFMT_INDEX32, VB_Zslice,
sizeof(VertexStruct));
//
// end the scene
//
g_pD3DDevice->EndScene();
hr = g_pD3DDevice->Present(NULL, NULL, NULL, NULL);
if (hr == D3DERR_DEVICELOST) {
fprintf(stderr, "DrawScene Present = %08x detected D3D DeviceLost\n", hr);
g_bDeviceLost = true;
ReleaseTextures();
}
}
return hr;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
void Cleanup() {
ReleaseTextures();
{
// destroy the D3D device
g_pD3DDevice->Release();
g_pD3D->Release();
}
}
//-----------------------------------------------------------------------------
// Name: RunCUDA()
// Desc: Launches the CUDA kernels to fill in the texture data
//-----------------------------------------------------------------------------
void RunCUDA() {
//
// map the resources we've registered so we can access them in Cuda
// - it is most efficient to map and unmap all resources in a single call,
// and to have the map/unmap calls be the boundary between using the GPU
// for Direct3D and Cuda
//
if (!g_bDeviceLost) {
cudaStream_t stream = 0;
const int nbResources = 3;
cudaGraphicsResource *ppResources[nbResources] = {
g_texture_2d.cudaResource, g_texture_vol.cudaResource,
g_texture_cube.cudaResource,
};
cudaGraphicsMapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsMapResources(3) failed");
//
// run kernels which will populate the contents of those textures
//
RunKernels();
//
// unmap the resources
//
cudaGraphicsUnmapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsUnmapResources(3) failed");
}
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
static LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam,
LPARAM lParam) {
switch (msg) {
case WM_KEYDOWN:
if (wParam == VK_ESCAPE) {
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
}
break;
case WM_DESTROY:
g_bDone = true;
Cleanup();
PostQuitMessage(0);
return 0;
case WM_PAINT:
ValidateRect(hWnd, NULL);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

78
Samples/5_Domain_Specific/simpleD3D9Texture/texture_2d.cu
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@ -1,78 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PI 3.1415926536f
/*
* Paint a 2D texture with a moving red/green hatch pattern on a
* strobing blue background. Note that this kernel reads to and
* writes from the texture, hence why this texture was not mapped
* as WriteDiscard.
*/
__global__ void cuda_kernel_texture_2d(unsigned char *surface, int width,
int height, size_t pitch, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
float *pixel;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// get a pointer to the pixel at (x,y)
pixel = (float *)(surface + y * pitch) + 4 * x;
// populate it
float value_x = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * x) / width - 1.0f));
float value_y = 0.5f + 0.5f * cos(t + 10.0f * ((2.0f * y) / height - 1.0f));
pixel[0] = 0.5 * pixel[0] + 0.5 * pow(value_x, 3.0f); // red
pixel[1] = 0.5 * pixel[1] + 0.5 * pow(value_y, 3.0f); // green
pixel[2] = 0.5f + 0.5f * cos(t); // blue
pixel[3] = 1; // alpha
}
extern "C" void cuda_texture_2d(void *surface, int width, int height,
size_t pitch, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_2d<<<Dg, Db>>>((unsigned char *)surface, width, height,
pitch, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_2d() failed to launch error = %d\n", error);
}
}

89
Samples/5_Domain_Specific/simpleD3D9Texture/texture_cube.cu
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@ -1,89 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PI 3.1415926536f
/*
* Paint a 2D surface with a moving bulls-eye pattern. The "face" parameter
* selects between 6 different colors to use. We will use a different color on
* each face of a cube map.
*/
__global__ void cuda_kernel_texture_cube(char *surface, int width, int height,
size_t pitch, int face, float t) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
unsigned char *pixel;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// get a pointer to this pixel
pixel = (unsigned char *)(surface + y * pitch) + 4 * x;
// populate it
float theta_x = (2.0f * x) / width - 1.0f;
float theta_y = (2.0f * y) / height - 1.0f;
float theta = 2.0f * PI * sqrt(theta_x * theta_x + theta_y * theta_y);
unsigned char value = 255 * (0.6f + 0.4f * cos(theta + t));
pixel[3] = 255; // alpha
if (face % 2) {
pixel[0] = // blue
pixel[1] = // green
pixel[2] = 0; // red
pixel[face / 2] = value;
} else {
pixel[0] = // blue
pixel[1] = // green
pixel[2] = value; // red
pixel[face / 2] = 0;
}
}
extern "C" void cuda_texture_cube(void *surface, int width, int height,
size_t pitch, int face, float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_cube<<<Dg, Db>>>((char *)surface, width, height, pitch,
face, t);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_cube() failed to launch error = %d\n", error);
}
}

75
Samples/5_Domain_Specific/simpleD3D9Texture/texture_volume.cu
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@ -1,75 +0,0 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* Paint a 3D texture with a gradient in X (blue) and Z (green), and have every
* other Z slice have full red.
*/
__global__ void cuda_kernel_texture_volume(unsigned char *surface, int width,
int height, int depth, size_t pitch,
size_t pitchSlice) {
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
// in the case where, due to quantization into grids, we have
// more threads than pixels, skip the threads which don't
// correspond to valid pixels
if (x >= width || y >= height) return;
// walk across the Z slices of this texture. it should be noted that
// this is far from optimal data access.
for (int z = 0; z < depth; ++z) {
// get a pointer to this pixel
unsigned char *pixel = surface + z * pitchSlice + y * pitch + 4 * x;
pixel[0] = 255 * x / (width - 1); // blue
pixel[1] = 255 * z / (depth - 1); // green
pixel[2] = 255 * (z % 2); // red
pixel[3] = 255; // alpha
}
}
extern "C" void cuda_texture_volume(void *surface, int width, int height,
int depth, size_t pitch, size_t pitchSlice,
float t) {
cudaError_t error = cudaSuccess;
dim3 Db = dim3(16, 16); // block dimensions are fixed to be 256 threads
dim3 Dg = dim3((width + Db.x - 1) / Db.x, (height + Db.y - 1) / Db.y);
cuda_kernel_texture_volume<<<Dg, Db>>>((unsigned char *)surface, width,
height, depth, pitch, pitchSlice);
error = cudaGetLastError();
if (error != cudaSuccess) {
printf("cuda_kernel_texture_volume() failed to launch error = %d\n", error);
}
}