mirror of
https://github.com/NVIDIA/cuda-samples.git
synced 2025-10-31 19:47:48 +08:00
86 lines
3.2 KiB
Plaintext
86 lines
3.2 KiB
Plaintext
/* 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_
|