| 69 | void UpdateOCIOGLState(); |
| 70 | |
| 71 | static void InitImageTexture(const char * filename) |
| 72 | { |
| 73 | OCIO::ImageIO img; |
| 74 | |
| 75 | if (filename && *filename) |
| 76 | { |
| 77 | std::cout << "Loading: " << filename << std::endl; |
| 78 | |
| 79 | try |
| 80 | { |
| 81 | img.read(filename, OCIO::BIT_DEPTH_F32); |
| 82 | } |
| 83 | catch (const std::exception &e) |
| 84 | { |
| 85 | std::cerr << "ERROR: Loading file failed: " << e.what() << std::endl; |
| 86 | exit(1); |
| 87 | } |
| 88 | catch (...) |
| 89 | { |
| 90 | std::cerr << "ERROR: Loading file failed." << std::endl; |
| 91 | exit(1); |
| 92 | } |
| 93 | } |
| 94 | // If no file is provided, use a default gradient texture |
| 95 | else |
| 96 | { |
| 97 | std::cout << "No image specified, loading gradient." << std::endl; |
| 98 | |
| 99 | img.init(512, 512, OCIO::CHANNEL_ORDERING_RGBA, OCIO::BIT_DEPTH_F32); |
| 100 | |
| 101 | float * pixels = (float *)img.getData(); |
| 102 | const long width = img.getWidth(); |
| 103 | const long channels = img.getNumChannels(); |
| 104 | |
| 105 | for (int y = 0; y < img.getHeight(); ++y) |
| 106 | { |
| 107 | for (int x = 0; x < img.getWidth(); ++x) |
| 108 | { |
| 109 | float c = (float)x / ((float)width - 1.0f); |
| 110 | pixels[channels * (width * y + x) + 0] = c; |
| 111 | pixels[channels * (width * y + x) + 1] = c; |
| 112 | pixels[channels * (width * y + x) + 2] = c; |
| 113 | pixels[channels * (width * y + x) + 3] = 1.0f; |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | OCIO::OglApp::Components comp = OCIO::OglApp::COMPONENTS_RGBA; |
| 119 | if (img.getNumChannels() == 4) |
| 120 | { |
| 121 | comp = OCIO::OglApp::COMPONENTS_RGBA; |
| 122 | } |
| 123 | else if (img.getNumChannels() == 3) |
| 124 | { |
| 125 | comp = OCIO::OglApp::COMPONENTS_RGB; |
| 126 | } |
| 127 | else |
| 128 | { |