mirror of
https://github.com/NVIDIA/cuda-samples.git
synced 2024-10-07 06:49:18 +08:00
139 lines
4.9 KiB
Plaintext
139 lines
4.9 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.
|
|
*/
|
|
|
|
#ifndef _SIMPLETEXTURE3D_KERNEL_CU_
|
|
#define _SIMPLETEXTURE3D_KERNEL_CU_
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
|
|
#include <helper_cuda.h>
|
|
#include <helper_math.h>
|
|
|
|
typedef unsigned int uint;
|
|
typedef unsigned char uchar;
|
|
|
|
cudaArray *d_volumeArray = 0;
|
|
cudaTextureObject_t tex; // 3D texture
|
|
|
|
__global__ void d_render(uint *d_output, uint imageW, uint imageH, float w,
|
|
cudaTextureObject_t texObj) {
|
|
uint x = __umul24(blockIdx.x, blockDim.x) + threadIdx.x;
|
|
uint y = __umul24(blockIdx.y, blockDim.y) + threadIdx.y;
|
|
|
|
float u = x / (float)imageW;
|
|
float v = y / (float)imageH;
|
|
// read from 3D texture
|
|
float voxel = tex3D<float>(texObj, u, v, w);
|
|
|
|
if ((x < imageW) && (y < imageH)) {
|
|
// write output color
|
|
uint i = __umul24(y, imageW) + x;
|
|
d_output[i] = voxel * 255;
|
|
}
|
|
}
|
|
|
|
extern "C" void setTextureFilterMode(bool bLinearFilter) {
|
|
if (tex) {
|
|
checkCudaErrors(cudaDestroyTextureObject(tex));
|
|
}
|
|
cudaResourceDesc texRes;
|
|
memset(&texRes, 0, sizeof(cudaResourceDesc));
|
|
|
|
texRes.resType = cudaResourceTypeArray;
|
|
texRes.res.array.array = d_volumeArray;
|
|
|
|
cudaTextureDesc texDescr;
|
|
memset(&texDescr, 0, sizeof(cudaTextureDesc));
|
|
|
|
texDescr.normalizedCoords = true;
|
|
texDescr.filterMode =
|
|
bLinearFilter ? cudaFilterModeLinear : cudaFilterModePoint;
|
|
;
|
|
texDescr.addressMode[0] = cudaAddressModeWrap;
|
|
texDescr.addressMode[1] = cudaAddressModeWrap;
|
|
texDescr.addressMode[2] = cudaAddressModeWrap;
|
|
texDescr.readMode = cudaReadModeNormalizedFloat;
|
|
|
|
checkCudaErrors(cudaCreateTextureObject(&tex, &texRes, &texDescr, NULL));
|
|
}
|
|
|
|
extern "C" void initCuda(const uchar *h_volume, cudaExtent volumeSize) {
|
|
// create 3D array
|
|
cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc<uchar>();
|
|
checkCudaErrors(cudaMalloc3DArray(&d_volumeArray, &channelDesc, volumeSize));
|
|
|
|
// copy data to 3D array
|
|
cudaMemcpy3DParms copyParams = {0};
|
|
copyParams.srcPtr =
|
|
make_cudaPitchedPtr((void *)h_volume, volumeSize.width * sizeof(uchar),
|
|
volumeSize.width, volumeSize.height);
|
|
copyParams.dstArray = d_volumeArray;
|
|
copyParams.extent = volumeSize;
|
|
copyParams.kind = cudaMemcpyHostToDevice;
|
|
checkCudaErrors(cudaMemcpy3D(©Params));
|
|
|
|
cudaResourceDesc texRes;
|
|
memset(&texRes, 0, sizeof(cudaResourceDesc));
|
|
|
|
texRes.resType = cudaResourceTypeArray;
|
|
texRes.res.array.array = d_volumeArray;
|
|
|
|
cudaTextureDesc texDescr;
|
|
memset(&texDescr, 0, sizeof(cudaTextureDesc));
|
|
|
|
// access with normalized texture coordinates
|
|
texDescr.normalizedCoords = true;
|
|
// linear interpolation
|
|
texDescr.filterMode = cudaFilterModeLinear;
|
|
// wrap texture coordinates
|
|
texDescr.addressMode[0] = cudaAddressModeWrap;
|
|
texDescr.addressMode[1] = cudaAddressModeWrap;
|
|
texDescr.addressMode[2] = cudaAddressModeWrap;
|
|
texDescr.readMode = cudaReadModeNormalizedFloat;
|
|
|
|
checkCudaErrors(cudaCreateTextureObject(&tex, &texRes, &texDescr, NULL));
|
|
}
|
|
|
|
extern "C" void render_kernel(dim3 gridSize, dim3 blockSize, uint *d_output,
|
|
uint imageW, uint imageH, float w) {
|
|
d_render<<<gridSize, blockSize>>>(d_output, imageW, imageH, w, tex);
|
|
}
|
|
|
|
void cleanupCuda() {
|
|
if (tex) {
|
|
checkCudaErrors(cudaDestroyTextureObject(tex));
|
|
}
|
|
if (d_volumeArray) {
|
|
checkCudaErrors(cudaFreeArray(d_volumeArray));
|
|
}
|
|
}
|
|
|
|
#endif // #ifndef _SIMPLETEXTURE3D_KERNEL_CU_
|