1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/* 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 _BICUBICTEXTURE_CU_
#define _BICUBICTEXTURE_CU_
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <helper_math.h>
// includes, cuda
#include <helper_cuda.h>
typedef unsigned int uint;
typedef unsigned char uchar;
#include "bicubicTexture_kernel.cuh"
cudaArray *d_imageArray = 0;
extern "C" void initTexture(int imageWidth, int imageHeight, uchar *h_data) {
// allocate array and copy image data
cudaChannelFormatDesc channelDesc =
cudaCreateChannelDesc(8, 0, 0, 0, cudaChannelFormatKindUnsigned);
checkCudaErrors(
cudaMallocArray(&d_imageArray, &channelDesc, imageWidth, imageHeight));
checkCudaErrors(cudaMemcpy2DToArray(
d_imageArray, 0, 0, h_data, imageWidth * sizeof(uchar),
imageWidth * sizeof(uchar), imageHeight, cudaMemcpyHostToDevice));
free(h_data);
cudaResourceDesc texRes;
memset(&texRes, 0, sizeof(cudaResourceDesc));
texRes.resType = cudaResourceTypeArray;
texRes.res.array.array = d_imageArray;
cudaTextureDesc texDescr;
memset(&texDescr, 0, sizeof(cudaTextureDesc));
texDescr.normalizedCoords = false;
texDescr.filterMode = cudaFilterModeLinear;
texDescr.addressMode[0] = cudaAddressModeClamp;
texDescr.addressMode[1] = cudaAddressModeClamp;
texDescr.readMode = cudaReadModeNormalizedFloat;
checkCudaErrors(
cudaCreateTextureObject(&texObjLinear, &texRes, &texDescr, NULL));
memset(&texDescr, 0, sizeof(cudaTextureDesc));
texDescr.normalizedCoords = false;
texDescr.filterMode = cudaFilterModePoint;
texDescr.addressMode[0] = cudaAddressModeClamp;
texDescr.addressMode[1] = cudaAddressModeClamp;
texDescr.readMode = cudaReadModeNormalizedFloat;
checkCudaErrors(
cudaCreateTextureObject(&texObjPoint, &texRes, &texDescr, NULL));
}
extern "C" void freeTexture() {
checkCudaErrors(cudaDestroyTextureObject(texObjPoint));
checkCudaErrors(cudaDestroyTextureObject(texObjLinear));
checkCudaErrors(cudaFreeArray(d_imageArray));
}
// render image using CUDA
extern "C" void render(int width, int height, float tx, float ty, float scale,
float cx, float cy, dim3 blockSize, dim3 gridSize,
int filter_mode, uchar4 *output) {
// call CUDA kernel, writing results to PBO memory
switch (filter_mode) {
case MODE_NEAREST:
d_render<<<gridSize, blockSize>>>(output, width, height, tx, ty, scale,
cx, cy, texObjPoint);
break;
case MODE_BILINEAR:
d_render<<<gridSize, blockSize>>>(output, width, height, tx, ty, scale,
cx, cy, texObjLinear);
break;
case MODE_BICUBIC:
d_renderBicubic<<<gridSize, blockSize>>>(output, width, height, tx, ty,
scale, cx, cy, texObjPoint);
break;
case MODE_FAST_BICUBIC:
d_renderFastBicubic<<<gridSize, blockSize>>>(
output, width, height, tx, ty, scale, cx, cy, texObjLinear);
break;
case MODE_CATROM:
d_renderCatRom<<<gridSize, blockSize>>>(output, width, height, tx, ty,
scale, cx, cy, texObjPoint);
break;
}
getLastCudaError("kernel failed");
}
#endif
|
