void loadImageData(int argc, char **argv)
{
// load image (needed so we can get the width and height before we create the window
char *image_path = NULL;
if (argc >= 1)
{
image_path = sdkFindFilePath(image_filename, argv[0]);
}
if (image_path == 0)
{
printf("Error finding image file '%s'\n", image_filename);
exit(EXIT_FAILURE);
}
sdkLoadPPM4(image_path, (unsigned char **) &h_img, &width, &height);
if (!h_img)
{
printf("Error opening file '%s'\n", image_path);
exit(EXIT_FAILURE);
}
printf("Loaded '%s', %d x %d pixels\n", image_path, width, height);
}
void initializeData(char *file)
{
GLint bsize;
unsigned int w, h;
size_t file_length= strlen(file);
if (!strcmp(&file[file_length-3], "pgm"))
{
if (sdkLoadPGM<unsigned char>(file, &pixels, &w, &h) != true)
{
printf("Failed to load PGM image file: %s\n", file);
exit(EXIT_FAILURE);
}
g_Bpp = 1;
}
else if (!strcmp(&file[file_length-3], "ppm"))
{
if (sdkLoadPPM4(file, &pixels, &w, &h) != true)
{
printf("Failed to load PPM image file: %s\n", file);
exit(EXIT_FAILURE);
}
g_Bpp = 4;
}
else
{
// cudaDeviceReset causes the driver to clean up all state. While
// not mandatory in normal operation, it is good practice. It is also
// needed to ensure correct operation when the application is being
// profiled. Calling cudaDeviceReset causes all profile data to be
// flushed before the application exits
cudaDeviceReset();
exit(EXIT_FAILURE);
}
imWidth = (int)w;
imHeight = (int)h;
setupTexture(imWidth, imHeight, pixels, g_Bpp);
memset(pixels, 0x0, g_Bpp * sizeof(Pixel) * imWidth * imHeight);
if (!g_bQAReadback)
{
// use OpenGL Path
glGenBuffers(1, &pbo_buffer);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo_buffer);
glBufferData(GL_PIXEL_UNPACK_BUFFER,
g_Bpp * sizeof(Pixel) * imWidth * imHeight,
pixels, GL_STREAM_DRAW);
glGetBufferParameteriv(GL_PIXEL_UNPACK_BUFFER, GL_BUFFER_SIZE, &bsize);
if ((GLuint)bsize != (g_Bpp * sizeof(Pixel) * imWidth * imHeight))
{
printf("Buffer object (%d) has incorrect size (%d).\n", (unsigned)pbo_buffer, (unsigned)bsize);
// cudaDeviceReset causes the driver to clean up all state. While
// not mandatory in normal operation, it is good practice. It is also
// needed to ensure correct operation when the application is being
// profiled. Calling cudaDeviceReset causes all profile data to be
// flushed before the application exits
cudaDeviceReset();
exit(EXIT_FAILURE);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
// register this buffer object with CUDA
checkCudaErrors(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, pbo_buffer, cudaGraphicsMapFlagsWriteDiscard));
glGenTextures(1, &texid);
glBindTexture(GL_TEXTURE_2D, texid);
glTexImage2D(GL_TEXTURE_2D, 0, ((g_Bpp==1) ? GL_LUMINANCE : GL_BGRA),
imWidth, imHeight, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
}
}
void initializeData(char *file)
{
GLint bsize;
unsigned int w, h;
size_t file_length= strlen(file);
if (!strcmp(&file[file_length-3], "pgm"))
{
if (sdkLoadPGM<unsigned char>(file, &pixels, &w, &h) != true)
{
printf("Failed to load PGM image file: %s\n", file);
exit(EXIT_FAILURE);
}
g_Bpp = 1;
}
else if (!strcmp(&file[file_length-3], "ppm"))
{
if (sdkLoadPPM4(file, &pixels, &w, &h) != true)
{
printf("Failed to load PPM image file: %s\n", file);
exit(EXIT_FAILURE);
}
g_Bpp = 4;
}
else
{
cudaDeviceReset();
exit(EXIT_FAILURE);
}
imWidth = (int)w;
imHeight = (int)h;
setupTexture(imWidth, imHeight, pixels, g_Bpp);
// copy function pointer tables to host side for later use
setupFunctionTables();
memset(pixels, 0x0, g_Bpp * sizeof(Pixel) * imWidth * imHeight);
if (!g_bQAReadback)
{
// use OpenGL Path
glGenBuffers(1, &pbo_buffer);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo_buffer);
glBufferData(GL_PIXEL_UNPACK_BUFFER,
g_Bpp * sizeof(Pixel) * imWidth * imHeight,
pixels, GL_STREAM_DRAW);
glGetBufferParameteriv(GL_PIXEL_UNPACK_BUFFER, GL_BUFFER_SIZE, &bsize);
if ((GLuint)bsize != (g_Bpp * sizeof(Pixel) * imWidth * imHeight))
{
printf("Buffer object (%d) has incorrect size (%d).\n", (unsigned)pbo_buffer, (unsigned)bsize);
cudaDeviceReset();
exit(EXIT_FAILURE);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
// register this buffer object with CUDA
checkCudaErrors(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, pbo_buffer, cudaGraphicsMapFlagsWriteDiscard));
glGenTextures(1, &texid);
glBindTexture(GL_TEXTURE_2D, texid);
glTexImage2D(GL_TEXTURE_2D, 0, ((g_Bpp==1) ? GL_LUMINANCE : GL_BGRA),
imWidth, imHeight, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
}
}
