Ejemplo n.º 1
0
// This is where we create the OpenGL PBOs, FBOs, and texture resources
void initGLResources()
{
    // create pixel buffer object
    glGenBuffersARB(1, &pbo);
    glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
    glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, width*height*sizeof(GLubyte)*4, h_img, GL_STREAM_DRAW_ARB);

    glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
    // DEPRECATED: cutilSafeCall(cudaGLRegisterBufferObject(pbo));
    cutilSafeCall(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, pbo,
                  cudaGraphicsMapFlagsWriteDiscard));

    // create texture for display
    glGenTextures(1, &texid);
    glBindTexture(GL_TEXTURE_2D, texid);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glBindTexture(GL_TEXTURE_2D, 0);

    // load shader program
    shader = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shader_code);

    if (g_FrameBufferObject) {
        delete g_FrameBufferObject;
        g_FrameBufferObject = NULL;
    }
    if (g_bFBODisplay) {
        g_FrameBufferObject = new CFrameBufferObject(width, height, 32, true, GL_TEXTURE_2D);
    }
}
Ejemplo n.º 2
0
////////////////////////////////////////////////////////////////////////////////
//! Initialize OpenGL
////////////////////////////////////////////////////////////////////////////////
CUTBoolean
initGL(int *argc, char **argv)
{
    // Create GL context
    glutInit(argc, argv);
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(window_width, window_height);
    glutCreateWindow("CUDA Marching Cubes");

    // initialize necessary OpenGL extensions
    glewInit();
    if (! glewIsSupported("GL_VERSION_2_0 " 
		                  )) {
        fprintf(stderr, "ERROR: Support for necessary OpenGL extensions missing.");
        fflush(stderr);
        return CUTFalse;
    }

    // default initialization
    glClearColor(0.1, 0.2, 0.3, 1.0);
    glEnable(GL_DEPTH_TEST);

    // good old-fashioned fixed function lighting
    float black[] = { 0.0, 0.0, 0.0, 1.0 };
    float white[] = { 1.0, 1.0, 1.0, 1.0 };
    float ambient[] = { 0.1, 0.1, 0.1, 1.0 };
    float diffuse[] = { 0.9, 0.9, 0.9, 1.0 };
    float lightPos[] = { 0.0, 0.0, 1.0, 0.0 };

    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, ambient);
    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, diffuse);
    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);

    glLightfv(GL_LIGHT0, GL_AMBIENT, white);
    glLightfv(GL_LIGHT0, GL_DIFFUSE, white);
    glLightfv(GL_LIGHT0, GL_SPECULAR, white);
    glLightfv(GL_LIGHT0, GL_POSITION, lightPos);

    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    
    // load shader program
    gl_Shader = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shader_code);

	if (g_FrameBufferObject) {
		delete g_FrameBufferObject; g_FrameBufferObject = NULL;
	}
	if (g_bFBODisplay) {
		g_FrameBufferObject = new CFrameBufferObject(window_width, window_height, 32, true, GL_TEXTURE_2D);
	}

	glutReportErrors();

    return CUTTrue;
}
void initOpenGLBuffers()
{
    printf("Creating GL texture...\n");
    glEnable(GL_TEXTURE_2D);
    glGenTextures(1, &gl_Tex);
    glBindTexture(GL_TEXTURE_2D, gl_Tex);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, imageW, imageH, 0, GL_RGBA, GL_UNSIGNED_BYTE, h_Src);
    printf("Texture created.\n");

    printf("Creating PBO...\n");
    glGenBuffers(1, &gl_PBO);
    glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, gl_PBO);
    glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, imageW * imageH * 4, h_Src, GL_STREAM_COPY);
    //While a PBO is registered to CUDA, it can't be used
    //as the destination for OpenGL drawing calls.
    //But in our particular case OpenGL is only used
    //to display the content of the PBO, specified by CUDA kernels,
    //so we need to register/unregister it only once.
    // DEPRECATED: checkCudaErrors(cudaGLRegisterBufferObject(gl_PBO) );
    checkCudaErrors(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, gl_PBO,
                                                 cudaGraphicsMapFlagsWriteDiscard));
    GLenum gl_error = glGetError();

    if (gl_error != GL_NO_ERROR)
    {
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
        char tmpStr[512];
        // NOTE: "%s(%i) : " allows Visual Studio to directly jump to the file at the right line
        // when the user double clicks on the error line in the Output pane. Like any compile error.
        sprintf_s(tmpStr, 255, "\n%s(%i) : GL Error : %s\n\n", __FILE__, __LINE__, gluErrorString(gl_error));
        OutputDebugString(tmpStr);
#endif
        fprintf(stderr, "GL Error in file '%s' in line %d :\n", __FILE__, __LINE__);
        fprintf(stderr, "%s\n", gluErrorString(gl_error));
        exit(EXIT_FAILURE);
    }

    printf("PBO created.\n");

    // load shader program
    shader = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shader_code);
}
Ejemplo n.º 4
0
void initOpenGLBuffers()
{
    printf("Creating GL texture...\n");
        glEnable(GL_TEXTURE_2D);
        glGenTextures(1, &gl_Tex);
        glBindTexture(GL_TEXTURE_2D, gl_Tex);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, imageW, imageH, 0, GL_RGBA, GL_UNSIGNED_BYTE, h_Src);
    printf("Texture created.\n");

    printf("Creating PBO...\n");
        glGenBuffers(1, &gl_PBO);
        glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, gl_PBO);
        glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, imageW * imageH * 4, h_Src, GL_STREAM_COPY);
        //While a PBO is registered to CUDA, it can't be used 
        //as the destination for OpenGL drawing calls.
        //But in our particular case OpenGL is only used 
        //to display the content of the PBO, specified by CUDA kernels,
        //so we need to register/unregister it only once.
	// DEPRECATED: cutilSafeCall( cudaGLRegisterBufferObject(gl_PBO) );
    cutilSafeCall(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, gl_PBO, 
					       cudaGraphicsMapFlagsWriteDiscard));
        CUT_CHECK_ERROR_GL();
    printf("PBO created.\n");

    // load shader program
    shader = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shader_code);

    if (g_FrameBufferObject) {
		delete g_FrameBufferObject; g_FrameBufferObject = NULL;
	}
	if (g_bFBODisplay) {
		g_FrameBufferObject = new CFrameBufferObject(imageW, imageH, 32, false, GL_TEXTURE_2D);
	}
}
Ejemplo n.º 5
0
// This is where we create the OpenGL PBOs, FBOs, and texture resources
void initGLResources()
{
    // create pixel buffer object
    glGenBuffersARB(1, &pbo);
    glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
    glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, width*height*sizeof(GLubyte)*4, h_img, GL_STREAM_DRAW_ARB);

    glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);

    checkCudaErrors(cudaGraphicsGLRegisterBuffer(&cuda_pbo_resource, pbo,
                                                 cudaGraphicsMapFlagsWriteDiscard));

    // create texture for display
    glGenTextures(1, &texid);
    glBindTexture(GL_TEXTURE_2D, texid);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glBindTexture(GL_TEXTURE_2D, 0);

    // load shader program
    shader = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shader_code);
}
Ejemplo n.º 6
0
void initialize(int argc, char **argv)
{
    printf("[%s] (OpenGL Mode)\n", sSDKsample);

    // First initialize OpenGL context, so we can properly set the GL for CUDA.
    // This is necessary in order to achieve optimal performance with OpenGL/CUDA interop.
    initGL(&argc, argv);

    int devID;
    cudaDeviceProp deviceProps;

    if (checkCmdLineFlag(argc, (const char **)argv, "device"))
    {
        devID = gpuGLDeviceInit(argc, (const char **)argv);

        if (devID < 0)
        {
            printf("exiting...\n");
            exit(EXIT_SUCCESS);
        }
    }
    else
    {
        devID = gpuGetMaxGflopsDeviceId();
        cudaGLSetGLDevice(devID);
    }

    // get number of SMs on this GPU
    checkCudaErrors(cudaGetDeviceProperties(&deviceProps, devID));
    printf("CUDA device [%s] has %d Multi-Processors\n", deviceProps.name, deviceProps.multiProcessorCount);

    // Create the timer (for fps measurement)
    sdkCreateTimer(&timer);

    // load image from disk
    loadImageData(argc, argv);

    printf("\n"
           "\tControls\n"
           "\t=/- : Zoom in/out\n"
           "\tb   : Run Benchmark g_FilterMode\n"
           "\tc   : Draw Bicubic Spline Curve\n"
           "\t[esc] - Quit\n\n"

           "\tPress number keys to change filtering g_FilterMode:\n\n"
           "\t1 : nearest filtering\n"
           "\t2 : bilinear filtering\n"
           "\t3 : bicubic filtering\n"
           "\t4 : fast bicubic filtering\n"
           "\t5 : Catmull-Rom filtering\n\n"
          );

    initGLBuffers();

#if USE_BUFFER_TEX
    fprog = compileASMShader(GL_FRAGMENT_PROGRAM_ARB, shaderCode);

    if (!fprog)
    {
        exit(EXIT_SUCCESS);
    }

#endif
}