// File: example.cpp // This minimal LDR/HDR encoding/transcoder example relies on encoder_lib. It shows how to use the encoder in a few different ways, and the transcoder. // // It should be compiled with the preprocessor macros BASISU_SUPPORT_SSE (typically 1) and BASISU_SUPPORT_OPENCL (typically 1). // They should be set to the same preprocesor options as the encoder. // If OpenCL is enabled, the "..\OpenCL" directory should be in your compiler's include path. Additionally, link against "..\OpenCL\lib\opencl64.lib". #include "../encoder/basisu_comp.h" #include "../transcoder/basisu_transcoder.h" #include "../encoder/basisu_gpu_texture.h" #include "../encoder/basisu_astc_ldr_encode.h" #define USE_ENCODER (1) //#define FORCE_SAN_FAILURE const bool USE_OPENCL = false; // The encoder lives in the "basisu" namespace. // The transcoder lives entirely in the "basist" namespace. using namespace basisu; // Quick function to create a visualization of the Mandelbrot set as an float HDR image. static void create_mandelbrot(imagef& img) { const int width = 256; const int height = 256; const int max_iter = 1000; // Create a more interesting color palette uint8_t palette[256][3]; for (int i = 0; i < 256; i++) { if (i < 64) { // Blue to cyan transition palette[i][0] = static_cast(0); // Red component palette[i][1] = static_cast(i * 4); // Green component palette[i][2] = static_cast(255); // Blue component } else if (i < 128) { // Cyan to green transition palette[i][0] = static_cast(0); // Red component palette[i][1] = static_cast(255); // Green component palette[i][2] = static_cast(255 - (i - 64) * 4); // Blue component } else if (i < 192) { // Green to yellow transition palette[i][0] = static_cast((i - 128) * 4); // Red component palette[i][1] = static_cast(255); // Green component palette[i][2] = static_cast(0); // Blue component } else { // Yellow to red transition palette[i][0] = static_cast(255); // Red component palette[i][1] = static_cast(255 - (i - 192) * 4); // Green component palette[i][2] = static_cast(0); // Blue component } } // Iterate over each pixel in the image for (int px = 0; px < width; px++) { for (int py = 0; py < height; py++) { double x0 = (px - width / 2.0) * 4.0 / width; double y0 = (py - height / 2.0) * 4.0 / height; double zx = 0.0; double zy = 0.0; double zx_squared = 0.0; double zy_squared = 0.0; double x_temp; int iter; for (iter = 0; iter < max_iter; iter++) { zx_squared = zx * zx; zy_squared = zy * zy; if (zx_squared + zy_squared > 4.0) break; // Update z = z^2 + c, but split into real and imaginary parts x_temp = zx_squared - zy_squared + x0; zy = 2.0 * zx * zy + y0; zx = x_temp; } // Map the number of iterations to a color in the palette int color_idx = iter % 256; // Set the pixel color in the image img.set_clipped(px, py, vec4F(((float)palette[color_idx][0])/128.0f, ((float)palette[color_idx][1])/128.0f, ((float)palette[color_idx][2])/128.0f)); } } } // This LDR example function uses the basis_compress() C-style function to compress a ETC1S .KTX2 file. static bool encode_etc1s() { const uint32_t W = 512, H = 512; image img(W, H); for (uint32_t y = 0; y < H; y++) for (uint32_t x = 0; x < W; x++) img(x, y).set(0, y >> 1, x >> 1, ((x ^ y) & 1) ? 255 : 0); basisu::vector source_images; source_images.push_back(img); size_t file_size = 0; uint32_t quality_level = 255; // basis_compress() is a simple wrapper around the basis_compressor_params and basis_compressor classes. void* pKTX2_data = basis_compress( basist::basis_tex_format::cETC1S, source_images, quality_level | cFlagSRGB | cFlagGenMipsClamp | cFlagThreaded | cFlagPrintStats | cFlagDebug | cFlagPrintStatus | cFlagUseOpenCL, 0.0f, &file_size, nullptr); if (!pKTX2_data) return false; if (!write_data_to_file("test_etc1s.ktx2", pKTX2_data, file_size)) { basis_free_data(pKTX2_data); return false; } basis_free_data(pKTX2_data); return true; } // This LDR example function uses the basis_compress() C-style function to compress a UASTC LDR .KTX2 file. static bool encode_uastc_ldr() { const uint32_t W = 512, H = 512; image img(W, H); for (uint32_t y = 0; y < H; y++) for (uint32_t x = 0; x < W; x++) img(x, y).set(x >> 1, y >> 1, 0, 1); basisu::vector source_images; source_images.push_back(img); size_t file_size = 0; // basis_compress() is a simple wrapper around the basis_compressor_params and basis_compressor classes. void* pKTX2_data = basis_compress( basist::basis_tex_format::cUASTC_LDR_4x4, source_images, cFlagThreaded | cFlagPrintStats | cFlagDebug | cFlagPrintStatus, 0.0f, &file_size, nullptr); if (!pKTX2_data) return false; if (!write_data_to_file("test_uastc_ldr_4x4.ktx2", pKTX2_data, file_size)) { basis_free_data(pKTX2_data); return false; } basis_free_data(pKTX2_data); return true; } // This HDR example function directly uses the basis_compressor_params and basis_compressor classes to compress to a UASTC HDR .KTX2 file. // These classes expose all encoder functionality (the C-style wrappers used above don't). static bool encode_uastc_hdr() { const uint32_t W = 256, H = 256; imagef img(W, H); #if 1 create_mandelbrot(img); #else for (uint32_t y = 0; y < H; y++) for (uint32_t x = 0; x < W; x++) img(x, y).set(((x ^ y) & 1) ? basist::ASTC_HDR_MAX_VAL : 1000.0f); #endif basis_compressor_params params; params.m_hdr = true; params.m_source_images_hdr.push_back(img); params.m_uastc_hdr_4x4_options.set_quality_level(3); params.m_debug = true; //params.m_debug_images = true; params.m_status_output = true; params.m_compute_stats = true; params.m_create_ktx2_file = true; params.m_write_output_basis_or_ktx2_files = true; params.m_out_filename = "test_uastc_hdr.ktx2"; params.m_perceptual = true; #if 1 // Create a job pool containing 7 total threads (the calling thread plus 6 additional threads). // A job pool must be created, even if threading is disabled. It's fine to pass in 0 for NUM_THREADS. const uint32_t NUM_THREADS = 6; job_pool jp(NUM_THREADS); params.m_pJob_pool = &jp; params.m_multithreading = true; #else // No threading const uint32_t NUM_THREADS = 1; job_pool jp(NUM_THREADS); params.m_pJob_pool = &jp; params.m_multithreading = false; #endif basis_compressor comp; if (!comp.init(params)) return false; basisu::basis_compressor::error_code ec = comp.process(); if (ec != basisu::basis_compressor::cECSuccess) return false; return true; } // This example function loads a .KTX2 file and then transcodes it to various compressed/uncompressed texture formats. // It writes .DDS and .ASTC files. // ARM's astcenc tool can be used to unpack the .ASTC file: // astcenc-avx2.exe -dh test_uastc_hdr_astc.astc out.exr static bool transcode_hdr() { // Note: The encoder already initializes the transcoder, but if you haven't initialized the encoder you MUST call this function to initialize the transcoder. basist::basisu_transcoder_init(); // Read the .KTX2 file's data into memory. uint8_vec ktx2_file_data; if (!read_file_to_vec("test_uastc_hdr.ktx2", ktx2_file_data)) return false; // Create the KTX2 transcoder object. basist::ktx2_transcoder transcoder; // Initialize the transcoder. if (!transcoder.init(ktx2_file_data.data(), ktx2_file_data.size_u32())) return false; const uint32_t width = transcoder.get_width(); const uint32_t height = transcoder.get_height(); printf("Texture dimensions: %ux%u, levels: %u\n", width, height, transcoder.get_levels()); // This example only transcodes UASTC HDR textures. if (!transcoder.is_hdr()) return false; // Begin transcoding (this will be a no-op with UASTC HDR textures, but you still need to do it. For ETC1S it'll unpack the global codebooks.) transcoder.start_transcoding(); // Transcode to BC6H and write a BC6H .DDS file. { gpu_image tex(texture_format::cBC6HUnsigned, width, height); bool status = transcoder.transcode_image_level(0, 0, 0, tex.get_ptr(), tex.get_total_blocks(), basist::transcoder_texture_format::cTFBC6H, 0); if (!status) return false; gpu_image_vec tex_vec; tex_vec.push_back(tex); if (!write_compressed_texture_file("test_uastc_hdr_bc6h.dds", tex_vec, false)) return false; } // Transcode to ASTC HDR 4x4 and write a ASTC 4x4 HDR .astc file. { gpu_image tex(texture_format::cASTC_HDR_4x4, width, height); bool status = transcoder.transcode_image_level(0, 0, 0, tex.get_ptr(), tex.get_total_blocks(), basist::transcoder_texture_format::cTFASTC_HDR_4x4_RGBA, 0); if (!status) return false; if (!write_astc_file("test_uastc_hdr_astc.astc", tex.get_ptr(), 4, 4, tex.get_pixel_width(), tex.get_pixel_height())) return false; } // Transcode to RGBA HALF and write an .EXR file. { basisu::vector half_img(width * 4 * height); bool status = transcoder.transcode_image_level(0, 0, 0, half_img.get_ptr(), half_img.size_u32() / 4, basist::transcoder_texture_format::cTFRGBA_HALF, 0); if (!status) return false; // Convert FP16 (half float) image to 32-bit float imagef float_img(transcoder.get_width(), transcoder.get_height()); for (uint32_t y = 0; y < transcoder.get_height(); y++) { for (uint32_t x = 0; x < transcoder.get_height(); x++) { float_img(x, y).set( basist::half_to_float(half_img[(x + y * width) * 4 + 0]), basist::half_to_float(half_img[(x + y * width) * 4 + 1]), basist::half_to_float(half_img[(x + y * width) * 4 + 2]), 1.0f); } } if (!write_exr("test_uastc_hdr_rgba_half.exr", float_img, 3, 0)) return false; } return true; } // These ASTC HDR/BC6H blocks are from the UASTC HDR spec: // https://github.com/BinomialLLC/basis_universal/wiki/UASTC-HDR-Texture-Specification static const uint8_t g_test_blocks[][16] = { { 252, 255, 255, 255, 255, 255, 255, 255, 118, 19, 118, 19, 118, 19, 0, 60 }, // ASTC HDR { 207, 5, 23, 92, 0, 10, 40, 160, 0, 0, 0, 0, 0, 0, 0, 0 }, // BC6H { 252, 255, 255, 255, 255, 255, 255, 255, 0, 60, 0, 60, 0, 60, 0, 60 }, { 239, 251, 239, 191, 7, 15, 60, 240, 0, 0, 0, 0, 0, 0, 0, 0 }, { 81, 224, 44, 65, 64, 144, 1, 0, 0, 0, 0, 0, 0, 196, 0, 0 }, { 3, 18, 72, 32, 241, 202, 43, 175, 0, 0, 0, 0, 0, 0, 143, 0 }, { 81, 224, 30, 1, 192, 158, 1, 0, 0, 0, 0, 0, 64, 126, 126, 6 }, { 3, 0, 0, 0, 152, 102, 154, 105, 0, 0, 255, 255, 255, 255, 255, 255 }, { 66, 224, 12, 85, 210, 123, 1, 0, 0, 0, 0, 0, 39, 39, 39, 39 }, { 3, 33, 131, 30, 82, 46, 185, 233, 80, 250, 80, 250, 80, 250, 80, 250 }, { 66, 224, 58, 1, 128, 58, 1, 0, 0, 0, 0, 0, 208, 65, 0, 65 }, { 35, 148, 80, 66, 1, 0, 0, 0, 250, 95, 255, 255, 245, 95, 80, 255 }, { 82, 224, 152, 37, 166, 3, 1, 0, 0, 0, 0, 176, 80, 50, 166, 219 }, { 235, 189, 251, 24, 197, 23, 95, 124, 73, 72, 139, 139, 139, 136, 143, 184 }, { 82, 224, 166, 45, 176, 3, 1, 0, 0, 0, 0, 40, 76, 72, 19, 0 }, { 235, 62, 4, 133, 77, 80, 65, 3, 1, 0, 7, 75, 7, 7, 11, 119 }, { 67, 224, 46, 65, 64, 244, 1, 0, 0, 0, 128, 84, 33, 130, 75, 74 }, { 227, 139, 47, 190, 0, 11, 44, 176, 54, 63, 3, 111, 3, 111, 51, 63 }, { 67, 224, 88, 196, 10, 48, 0, 0, 0, 0, 64, 216, 11, 111, 113, 173 }, { 139, 80, 64, 243, 116, 214, 217, 103, 157, 153, 150, 153, 150, 153, 150, 153 }, { 83, 224, 2, 128, 128, 40, 1, 0, 0, 0, 118, 163, 46, 204, 20, 183 }, { 108, 173, 181, 214, 162, 136, 2, 138, 40, 0, 168, 177, 97, 150, 106, 218 }, { 83, 224, 120, 64, 0, 48, 1, 0, 0, 0, 36, 73, 146, 35, 57, 146 }, { 160, 150, 90, 106, 113, 192, 113, 23, 64, 23, 148, 56, 137, 147, 36, 73 }, { 65, 226, 76, 64, 128, 38, 1, 0, 0, 248, 239, 191, 255, 254, 251, 111 }, { 107, 247, 221, 119, 71, 1, 5, 20, 170, 170, 170, 170, 170, 170, 170, 170 }, { 65, 226, 76, 64, 128, 38, 1, 0, 0, 248, 239, 191, 255, 254, 219, 239 }, { 107, 252, 241, 199, 199, 6, 27, 108, 90, 165, 85, 85, 85, 85, 85, 85 }, { 81, 226, 92, 67, 132, 166, 1, 0, 128, 150, 161, 218, 172, 106, 165, 186 }, { 35, 55, 220, 110, 3, 231, 27, 111, 18, 226, 17, 17, 18, 17, 79, 17 }, { 81, 226, 90, 64, 128, 172, 1, 0, 128, 116, 171, 219, 229, 106, 223, 154 }, { 7, 63, 252, 240, 67, 13, 53, 212, 20, 84, 18, 34, 33, 17, 18, 226 }, { 66, 226, 100, 1, 128, 152, 0, 0, 216, 238, 190, 222, 216, 222, 216, 222 }, { 103, 173, 181, 214, 34, 139, 44, 178, 136, 228, 132, 228, 132, 130, 136, 228 }, { 66, 226, 36, 1, 128, 44, 1, 0, 125, 221, 0, 13, 215, 125, 221, 0 }, { 3, 0, 0, 0, 160, 132, 18, 74, 0, 187, 190, 235, 176, 0, 187, 190 }, { 81, 96, 199, 142, 204, 34, 92, 47, 1, 0, 0, 0, 64, 86, 115, 126 }, { 131, 164, 34, 118, 177, 108, 180, 188, 0, 0, 0, 0, 112, 0, 255, 0 }, { 81, 96, 47, 9, 124, 112, 126, 254, 0, 0, 0, 0, 64, 122, 134, 129 }, { 163, 166, 90, 134, 105, 105, 133, 93, 254, 255, 119, 255, 15, 0, 15, 0 }, { 66, 96, 247, 184, 16, 185, 130, 83, 1, 0, 0, 0, 0, 85, 255, 255 }, { 35, 175, 188, 160, 202, 47, 70, 11, 1, 0, 0, 0, 85, 85, 255, 255 }, { 66, 96, 1, 201, 28, 213, 136, 99, 1, 0, 0, 0, 255, 170, 0, 0 }, { 3, 66, 36, 99, 212, 108, 54, 201, 0, 0, 0, 0, 85, 85, 255, 255 }, { 82, 96, 9, 211, 16, 199, 126, 81, 1, 0, 0, 100, 167, 135, 73, 118 }, { 195, 195, 24, 13, 132, 205, 50, 165, 64, 255, 64, 255, 64, 255, 64, 255 }, { 82, 96, 191, 138, 41, 202, 122, 120, 0, 0, 0, 248, 243, 26, 253, 219 }, { 11, 234, 82, 17, 136, 238, 61, 252, 72, 184, 4, 248, 132, 68, 64, 68 }, { 67, 96, 193, 134, 37, 188, 0, 8, 0, 0, 64, 230, 249, 209, 109, 164 }, { 75, 107, 97, 157, 8, 111, 60, 225, 156, 207, 105, 3, 57, 198, 6, 147 }, { 67, 96, 245, 43, 102, 246, 107, 32, 0, 0, 64, 170, 2, 15, 85, 148 }, { 75, 68, 220, 76, 122, 182, 221, 121, 97, 207, 96, 207, 144, 207, 96, 156 }, { 83, 96, 39, 144, 13, 174, 126, 122, 0, 0, 59, 245, 171, 166, 2, 8 }, { 78, 162, 134, 118, 73, 238, 0, 195, 18, 0, 160, 159, 50, 43, 64, 65 }, { 83, 96, 251, 132, 172, 38, 1, 85, 0, 0, 159, 228, 212, 139, 251, 80 }, { 106, 41, 211, 12, 147, 102, 2, 150, 5, 0, 152, 161, 91, 214, 81, 10 }, { 65, 98, 91, 63, 178, 78, 59, 69, 0, 228, 51, 44, 243, 217, 170, 203 }, { 235, 156, 207, 166, 82, 46, 184, 219, 52, 50, 51, 86, 32, 3, 207, 102 }, { 65, 98, 229, 178, 100, 164, 81, 180, 0, 96, 5, 44, 129, 46, 232, 51 }, { 43, 220, 52, 123, 162, 145, 73, 19, 49, 201, 32, 250, 32, 252, 32, 252 }, { 81, 98, 247, 16, 234, 94, 61, 125, 128, 59, 245, 206, 170, 72, 122, 66 }, { 75, 8, 148, 158, 73, 168, 162, 132, 24, 149, 17, 225, 246, 154, 214, 171 }, { 81, 98, 79, 241, 45, 197, 14, 98, 128, 11, 208, 6, 112, 1, 112, 0 }, { 39, 222, 90, 145, 164, 67, 16, 42, 0, 245, 0, 182, 0, 149, 0, 164 }, { 66, 98, 89, 167, 60, 234, 94, 65, 123, 119, 247, 183, 255, 219, 234, 12 }, { 39, 165, 26, 90, 63, 179, 76, 66, 48, 87, 219, 255, 237, 239, 238, 222 }, { 66, 98, 77, 232, 12, 46, 2, 95, 242, 238, 122, 110, 25, 106, 5, 82 }, { 199, 170, 148, 188, 199, 122, 232, 173, 186, 95, 169, 103, 137, 161, 136, 176 }, { 81, 40, 2, 78, 90, 161, 75, 48, 58, 97, 43, 16, 0, 195, 3, 97 }, { 170, 235, 154, 215, 109, 145, 1, 174, 90, 186, 177, 127, 255, 79, 224, 39 }, { 81, 8, 2, 46, 93, 129, 76, 241, 95, 193, 236, 16, 128, 202, 121, 21 }, { 242, 111, 189, 217, 36, 112, 152, 33, 241, 89, 128, 143, 248, 142, 239, 248 }, { 66, 232, 4, 174, 190, 161, 173, 48, 251, 160, 203, 16, 216, 255, 170, 0 }, { 146, 13, 52, 186, 26, 152, 252, 225, 158, 232, 1, 64, 146, 254, 255, 21 }, { 66, 104, 13, 174, 130, 80, 21, 41, 66, 176, 20, 9, 32, 8, 165, 127 }, { 178, 210, 201, 221, 198, 21, 23, 252, 120, 194, 8, 188, 109, 15, 1, 2 }, { 82, 232, 4, 46, 216, 200, 214, 83, 40, 79, 5, 128, 243, 158, 1, 0 }, { 193, 54, 154, 92, 16, 80, 80, 161, 146, 229, 1, 0, 0, 222, 246, 5 }, { 82, 200, 9, 206, 97, 38, 77, 110, 141, 73, 21, 229, 237, 31, 22, 104 }, { 1, 10, 33, 112, 217, 111, 175, 93, 147, 195, 129, 125, 235, 37, 64, 18 }, { 67, 136, 85, 238, 154, 126, 225, 184, 235, 87, 132, 97, 75, 229, 150, 178 }, { 221, 218, 108, 171, 230, 159, 15, 254, 129, 56, 15, 0, 25, 55, 255, 49 }, { 67, 40, 2, 110, 61, 154, 128, 205, 39, 140, 70, 191, 16, 239, 182, 190 }, { 161, 216, 160, 113, 144, 107, 174, 217, 38, 161, 189, 13, 25, 71, 31, 217 }, { 83, 136, 3, 78, 242, 175, 250, 9, 242, 245, 156, 170, 177, 10, 107, 115 }, { 117, 153, 228, 108, 190, 209, 238, 251, 211, 23, 228, 77, 166, 100, 75, 117 }, { 83, 200, 9, 110, 6, 104, 61, 242, 111, 61, 255, 103, 203, 18, 221, 214 }, { 189, 198, 90, 97, 54, 216, 40, 3, 255, 219, 221, 150, 110, 89, 50, 0 }, { 81, 40, 2, 150, 184, 130, 106, 248, 236, 2, 64, 134, 65, 248, 0, 114 }, { 1, 23, 28, 96, 223, 25, 151, 27, 28, 163, 1, 224, 255, 255, 31, 0 }, { 81, 136, 2, 22, 131, 211, 10, 0, 96, 65, 98, 31, 74, 35, 184, 166 }, { 2, 219, 67, 75, 204, 42, 129, 4, 3, 44, 188, 31, 251, 129, 239, 24 }, { 66, 40, 2, 22, 229, 136, 130, 104, 69, 64, 136, 8, 247, 130, 0, 95 }, { 225, 182, 27, 94, 239, 61, 159, 123, 30, 164, 41, 224, 255, 251, 23, 16 }, { 66, 136, 31, 118, 66, 50, 19, 104, 66, 58, 214, 16, 229, 93, 222, 252 }, { 162, 220, 87, 223, 220, 206, 8, 208, 128, 61, 2, 14, 161, 18, 132, 74 } }; const uint32_t NUM_TEST_BLOCKS = (sizeof(g_test_blocks) / sizeof(g_test_blocks[0])) / 2; static bool block_unpack_and_transcode_example(void) { printf("block_unpack_and_transcode_example:\n"); for (uint32_t test_block_iter = 0; test_block_iter < NUM_TEST_BLOCKS; test_block_iter++) { printf("-- Test block %u:\n", test_block_iter); const uint8_t* pASTC_blk = &g_test_blocks[test_block_iter * 2 + 0][0]; const uint8_t* pBC6H_blk = &g_test_blocks[test_block_iter * 2 + 1][0]; // Unpack the physical ASTC block to logical. // Note this is a full ASTC block unpack, and is not specific to UASTC. It does not verify that the block follows the UASTC HDR spec, only ASTC. astc_helpers::log_astc_block log_blk; bool status = astc_helpers::unpack_block(pASTC_blk, log_blk, 4, 4); assert(status); if (!status) { fprintf(stderr, "Could not unpack ASTC HDR block!\n"); return false; } // Print out basic block configuration. printf("Solid color: %u\n", log_blk.m_solid_color_flag_hdr); if (!log_blk.m_solid_color_flag_hdr) { printf("Num partitions: %u\n", log_blk.m_num_partitions); printf("CEMs: %u %u\n", log_blk.m_color_endpoint_modes[0], log_blk.m_color_endpoint_modes[1]); printf("Weight ISE range: %u\n", log_blk.m_weight_ise_range); printf("Endpoint ISE range: %u\n", log_blk.m_endpoint_ise_range); } // Try to transcode this block to BC6H. This will fail if the block is not UASTC HDR. basist::bc6h_block transcoded_bc6h_blk; status = basist::astc_hdr_transcode_to_bc6h(*(const basist::astc_blk*)pASTC_blk, transcoded_bc6h_blk); if (!status) printf("!"); assert(status); // Make sure our transcoded BC6H block matches the unexpected block from the UASTC HDR spec. if (memcmp(&transcoded_bc6h_blk, pBC6H_blk, 16) == 0) { printf("Block transcoded OK\n"); } else { fprintf(stderr, "Block did NOT transcode as expected\n"); return false; } } // test_block_iter printf("Transcode test OK\n"); return true; } static void fuzz_uastc_hdr_transcoder_test() { printf("fuzz_uastc_hdr_transcoder_test:\n"); basisu::rand rg; rg.seed(2000); #ifdef __SANITIZE_ADDRESS__ const uint32_t NUM_TRIES = 100000000; #else const uint32_t NUM_TRIES = 2000000; #endif for (uint32_t t = 0; t < NUM_TRIES; t++) { basist::astc_blk astc_blk; if (rg.frand(0.0f, 1.0f) < .3f) { // Fully random block for (uint32_t k = 0; k < 16; k++) ((uint8_t*)&astc_blk)[k] = rg.byte(); } else { // Take a UASTC HDR block and corrupt it uint32_t test_block_index = rg.irand(0, NUM_TEST_BLOCKS - 1); const uint8_t* pGood_ASTC_blk = &g_test_blocks[test_block_index * 2 + 0][0]; memcpy(&astc_blk, pGood_ASTC_blk, 16); const uint32_t num_regions = rg.irand(1, 3); for (uint32_t k = 0; k < num_regions; k++) { if (rg.bit()) { // Flip a set of random bits const uint32_t bit_index = rg.irand(0, 127); const uint32_t num_bits = rg.irand(1, 128 - 127); assert((bit_index + num_bits) <= 128); for (uint32_t i = 0; i < num_bits; i++) { uint32_t bit_ofs = bit_index + i; assert(bit_ofs < 128); uint32_t bit_mask = 1 << (bit_ofs & 7); uint32_t byte_ofs = bit_ofs >> 3; assert(byte_ofs < 16); ((uint8_t*)&astc_blk)[byte_ofs] ^= bit_mask; } } else { // Set some bits to random values const uint32_t bit_index = rg.irand(0, 127); const uint32_t num_bits = rg.irand(1, 128 - 127); assert((bit_index + num_bits) <= 128); for (uint32_t i = 0; i < num_bits; i++) { uint32_t bit_ofs = bit_index + i; assert(bit_ofs < 128); uint32_t bit_mask = 1 << (bit_ofs & 7); uint32_t byte_ofs = bit_ofs >> 3; assert(byte_ofs < 16); ((uint8_t*)&astc_blk)[byte_ofs] &= ~bit_mask; if (rg.bit()) ((uint8_t*)&astc_blk)[byte_ofs] |= bit_mask; } } } // k } basist::bc6h_block bc6h_blk; bool status = basist::astc_hdr_transcode_to_bc6h(astc_blk, bc6h_blk); if (!(t % 100000)) printf("%u %u\n", t, status); } printf("OK\n"); } void wrap_image(const image& src, image& dst, int gridX, int gridY, float maxOffset, bool randomize, basisu::rand &rnd) { if (gridX < 1) gridX = 1; if (gridY < 1) gridY = 1; const int vxCountX = gridX + 1; const int vxCountY = gridY + 1; const int stride = vxCountX; const int w = src.get_width(); const int h = src.get_height(); dst.resize(w, h); dst.set_all(g_black_color); basisu::vector verts(vxCountX * vxCountY); basisu::vector uvs(vxCountX * vxCountY); basisu::vector cols(vxCountX * vxCountY); for (int gy = 0; gy <= gridY; ++gy) { for (int gx = 0; gx <= gridX; ++gx) { float x = (gx / float(gridX)) * (w - 1); float y = (gy / float(gridY)) * (h - 1); float rx = x; float ry = y; if (randomize) { rx += rnd.frand(-maxOffset, maxOffset); ry += rnd.frand(-maxOffset, maxOffset); } verts[gy * stride + gx] = { rx, ry }; float u = gx / float(gridX); float v = gy / float(gridY); u = std::max(0.0f, std::min(1.0f, u)); v = std::max(0.0f, std::min(1.0f, v)); uvs[gy * stride + gx] = { u, v }; color_rgba c(g_white_color); cols[gy * stride + gx] = c; } } for (int gy = 0; gy < gridY; ++gy) { for (int gx = 0; gx < gridX; ++gx) { int i0 = gy * stride + gx; int i1 = i0 + 1; int i2 = i0 + stride; int i3 = i2 + 1; tri2 tA; tA.p0 = verts[i0]; tA.p1 = verts[i1]; tA.p2 = verts[i3]; tA.t0 = uvs[i0]; tA.t1 = uvs[i1]; tA.t2 = uvs[i3]; tA.c0 = cols[i0]; tA.c1 = cols[i1]; tA.c2 = cols[i3]; draw_tri2(dst, &src, tA, randomize); tri2 tB; tB.p0 = verts[i0]; tB.p1 = verts[i3]; tB.p2 = verts[i2]; tB.t0 = uvs[i0]; tB.t1 = uvs[i3]; tB.t2 = uvs[i2]; tB.c0 = cols[i0]; tB.c1 = cols[i3]; tB.c2 = cols[i2]; draw_tri2(dst, &src, tB, randomize); } // gx } // by } enum class codec_class { cETC1S = 0, cUASTC_LDR_4x4 = 1, cUASTC_HDR_4x4 = 2, cASTC_HDR_6x6 = 3, cUASTC_HDR_6x6 = 4, cASTC_LDR = 5, cXUASTC_LDR = 6, cTOTAL }; // The main point of this test is to exercise lots of internal code paths. bool random_compress_test() { printf("Random XUASTC/ASTC LDR 4x4-12x12 compression test:\n"); const uint32_t num_images = 18; image test_images[num_images + 1]; for (uint32_t i = 0; i < num_images; i++) load_png(fmt_string("../test_files/kodim{02}.png", 1 + i).c_str(), test_images[i]); const uint32_t N = 16; //const uint32_t N = 5000; const uint32_t MAX_WIDTH = 1024, MAX_HEIGHT = 1024; basisu::rand rnd; float lowest_psnr1 = BIG_FLOAT_VAL, lowest_psnr2 = BIG_FLOAT_VAL; struct result { uint32_t m_seed; basist::basis_tex_format m_fmt; float m_psnr1; float m_psnr2; }; basisu::vector results; for (uint32_t i = 0; i < N; i++) { uint32_t seed = 166136844 + i; //seed = 23082246; // etc1s 1-bit SSE overflow //seed = 56636601; // UASTC HDR 4x4 assert tol //seed = 56636744; // HDR 6x6 float overflow fmt_printf("------------------------------ Seed: {}\n", seed); rnd.seed(seed); const uint32_t w = rnd.irand(1, MAX_WIDTH); const uint32_t h = rnd.irand(1, MAX_HEIGHT); const bool mips = rnd.bit(); const bool use_a = rnd.bit(); fmt_printf("Trying {}x{}, mips: {}, use_a: {}\n", w, h, mips, use_a); // Chose a random codec/block size to test basist::basis_tex_format tex_mode = basist::basis_tex_format::cETC1S; bool is_hdr = false; uint32_t rnd_codec_class = rnd.irand(0, (uint32_t)codec_class::cTOTAL - 1); // TODO - make this a command line //rnd_codec_class = rnd.bit() ? (uint32_t)codec_class::cXUASTC_LDR : (uint32_t)codec_class::cASTC_LDR; //rnd_codec_class = (uint32_t)codec_class::cXUASTC_LDR; //rnd_codec_class = (uint32_t)codec_class::cETC1S; switch (rnd_codec_class) { case (uint32_t)codec_class::cETC1S: { tex_mode = basist::basis_tex_format::cETC1S; break; } case (uint32_t)codec_class::cUASTC_LDR_4x4: { tex_mode = basist::basis_tex_format::cUASTC_LDR_4x4; break; } case (uint32_t)codec_class::cUASTC_HDR_4x4: { tex_mode = basist::basis_tex_format::cUASTC_HDR_4x4; is_hdr = true; break; } case (uint32_t)codec_class::cASTC_HDR_6x6: { tex_mode = basist::basis_tex_format::cASTC_HDR_6x6; is_hdr = true; break; } case (uint32_t)codec_class::cUASTC_HDR_6x6: { tex_mode = basist::basis_tex_format::cUASTC_HDR_6x6_INTERMEDIATE; is_hdr = true; break; } case (uint32_t)codec_class::cASTC_LDR: { // ASTC LDR 4x4-12x12 const uint32_t block_variant = rnd.irand(0, astc_helpers::NUM_ASTC_BLOCK_SIZES - 1); tex_mode = (basist::basis_tex_format)((uint32_t)basist::basis_tex_format::cASTC_LDR_4x4 + block_variant); break; } case (uint32_t)codec_class::cXUASTC_LDR: { // XUASTC LDR 4x4-12x12 const uint32_t block_variant = rnd.irand(0, astc_helpers::NUM_ASTC_BLOCK_SIZES - 1); tex_mode = (basist::basis_tex_format)((uint32_t)basist::basis_tex_format::cXUASTC_LDR_4x4 + block_variant); break; } default: assert(0); tex_mode = basist::basis_tex_format::cETC1S; break; } fmt_printf("Testing basis_tex_format={}\n", (uint32_t)tex_mode); size_t comp_size = 0; // Create random LDR source image to compress image src_img; src_img.resize(w, h, w, color_rgba(rnd.byte(), rnd.byte(), rnd.byte(), use_a ? rnd.byte() : 255)); if (rnd.irand(0, 7) >= 1) { const uint32_t nt = rnd.irand(0, 1000); for (uint32_t k = 0; k < nt; k++) { color_rgba c(rnd.byte(), rnd.byte(), rnd.byte(), use_a ? rnd.byte() : 255); uint32_t r = rnd.irand(0, 25); if (r == 0) { uint32_t xs = rnd.irand(0, w - 1); uint32_t xe = rnd.irand(0, w - 1); if (xs > xe) std::swap(xs, xe); uint32_t ys = rnd.irand(0, h - 1); uint32_t ye = rnd.irand(0, h - 1); if (ys > ye) std::swap(ys, ye); src_img.fill_box(xs, ys, xe - xs + 1, ye - ys + 1, c); } else if (r <= 5) { uint32_t xs = rnd.irand(0, w - 1); uint32_t xe = rnd.irand(0, w - 1); uint32_t ys = rnd.irand(0, h - 1); uint32_t ye = rnd.irand(0, h - 1); basisu::draw_line(src_img, xs, ys, xe, ye, c); } else if (r == 6) { uint32_t cx = rnd.irand(0, w - 1); uint32_t cy = rnd.irand(0, h - 1); uint32_t ra = rnd.irand(0, 100); basisu::draw_circle(src_img, cx, cy, ra, c); } else if (r < 10) { uint32_t x = rnd.irand(0, w - 1); uint32_t y = rnd.irand(0, h - 1); uint32_t sx = rnd.irand(1, 3); uint32_t sy = rnd.irand(1, 3); uint32_t l = rnd.irand(1, 10); char buf[32] = {}; for (uint32_t j = 0; j < l; j++) buf[j] = (char)rnd.irand(32, 127); src_img.debug_text(x, y, sx, sy, c, nullptr, rnd.bit(), "%s", buf); } else if (r < 12) { uint32_t xs = rnd.irand(0, w - 1); uint32_t ys = rnd.irand(0, h - 1); uint32_t xl = rnd.irand(1, 100); uint32_t yl = rnd.irand(1, 100); uint32_t xe = minimum(xs + xl - 1, w - 1); uint32_t ye = minimum(ys + yl - 1, h - 1); color_rgba cols[4]; cols[0] = c; for (uint32_t j = 1; j < 4; j++) cols[j] = color_rgba(rnd.byte(), rnd.byte(), rnd.byte(), use_a ? rnd.byte() : 255); const bool a_only = rnd.bit(); const bool rgb_only = rnd.bit(); const bool noise_flag = rnd.irand(0, 9) == 0; for (uint32_t y = ys; y <= ye; y++) { float fy = (ye != ys) ? (float(y - ys) / float(ye - ys)) : 0; for (uint32_t x = xs; x <= xe; x++) { float fx = (xe != xs) ? (float(x - xs) / float(xe - xs)) : 0; color_rgba q; if (noise_flag) { for (uint32_t j = 0; j < 4; j++) q[j] = rnd.byte(); } else { for (uint32_t j = 0; j < 4; j++) { float lx0 = lerp((float)cols[0][j], (float)cols[1][j], fx); float lx1 = lerp((float)cols[2][j], (float)cols[3][j], fx); int ly = (int)std::round(lerp(lx0, lx1, fy)); q[j] = (uint8_t)clamp(ly, 0, 255); } } if (a_only) src_img(x, y).a = q.a; else if (rgb_only) { src_img(x, y).r = q.r; src_img(x, y).g = q.g; src_img(x, y).b = q.b; } else src_img(x, y) = q; } // x } // y } else if ((r < 20) && (num_images)) { uint32_t image_index = rnd.irand(0, num_images - 1); const image& img = test_images[image_index]; if (img.get_width()) { float tw = (float)rnd.irand(1, minimum(128, img.get_width())); float th = (float)rnd.irand(1, minimum(128, img.get_height())); float u = (float)rnd.irand(0, img.get_width() - (int)tw); float v = (float)rnd.irand(0, img.get_height() - (int)th); u /= (float)img.get_width(); v /= (float)img.get_height(); tw /= (float)img.get_width(); th /= (float)img.get_height(); float dx = (float)rnd.irand(0, src_img.get_width() - 1); float dy = (float)rnd.irand(0, src_img.get_height() - 1); float dw = (float)rnd.irand(1, minimum(256, img.get_width())); float dh = (float)rnd.irand(1, minimum(256, img.get_height())); tri2 tri; tri.p0.set(dx, dy); tri.t0.set(u, v); tri.p1.set(dx + dw, dy); tri.t1.set(u + tw, v); tri.p2.set(dx + dw, dy + dh); tri.t2.set(u + tw, v + th); bool alpha_blend = rnd.bit(); if (alpha_blend) { tri.c0.set(rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(1, 255)); tri.c1.set(rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(1, 255)); tri.c2.set(rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(1, 255)); } else { tri.c0 = g_white_color; tri.c1 = g_white_color; tri.c2 = g_white_color; } draw_tri2(src_img, &img, tri, alpha_blend); tri.p0.set(dx, dy); tri.t0.set(u, v); tri.p1.set(dx + dw, dy + dh); tri.t1.set(u + tw, v + th); tri.c1 = tri.c2; tri.p2.set(dx, dy + dh); tri.t2.set(u, v + th); tri.c2.set(rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(100, 255), rnd.irand(1, 255)); draw_tri2(src_img, &img, tri, alpha_blend); } } else { src_img(rnd.irand(0, w - 1), rnd.irand(0, h - 1)) = c; } } } if ((use_a) && (rnd.irand(0, 3) >= 2)) { const uint32_t nt = rnd.irand(0, 1000); for (uint32_t k = 0; k < nt; k++) src_img(rnd.irand(0, w - 1), rnd.irand(0, h - 1)).a = rnd.byte(); } if (rnd.bit()) { int gridX = rnd.irand(8, 24); int gridY = rnd.irand(8, 24); float maxOffset = rnd.frand(0.0f, (float)maximum(gridX, gridY)); image tmp_img; wrap_image(src_img, tmp_img, gridX, gridY, maxOffset, true, rnd); src_img.swap(tmp_img); } if (!use_a) { for (uint32_t y = 0; y < h; y++) for (uint32_t x = 0; x < w; x++) src_img(x, y).a = 255; } //save_png("test.png", src_img); //fmt_printf("Has alpha: {}\n", src_img.has_alpha()); // Choose randomized codec parameters uint32_t flags = cFlagPrintStats | cFlagValidateOutput | cFlagPrintStatus; flags |= cFlagDebug; flags |= cFlagThreaded; if (rnd.bit()) flags |= cFlagSRGB; if (rnd.bit()) flags |= cFlagKTX2; if (mips) flags |= (rnd.bit() ? cFlagGenMipsClamp : cFlagGenMipsWrap); if (rnd.bit()) flags |= cFlagREC2020; float quality = 0.0f; switch (rnd_codec_class) { case (uint32_t)codec_class::cETC1S: { // ETC1S // Choose random ETC1S quality level flags |= rnd.irand(1, 255); break; } case (uint32_t)codec_class::cUASTC_LDR_4x4: { // UASTC LDR 4x4 if (rnd.bit()) { // Choose random RDO lambda quality = rnd.frand(0.0, 10.0f); } // Choose random effort level flags |= rnd.irand(cPackUASTCLevelFastest, cPackUASTCLevelVerySlow); break; } case (uint32_t)codec_class::cUASTC_HDR_4x4: { // UASTC HDR 4x4 // Choose random effort level. flags |= rnd.irand(uastc_hdr_4x4_codec_options::cMinLevel, uastc_hdr_4x4_codec_options::cMaxLevel); break; } case (uint32_t)codec_class::cASTC_HDR_6x6: case (uint32_t)codec_class::cUASTC_HDR_6x6: { // RDO ASTC HDR 6x6 or UASTC HDR 6x6 // Chose random effort level flags |= rnd.irand(0, astc_6x6_hdr::ASTC_HDR_6X6_MAX_USER_COMP_LEVEL); if (rnd.bit()) { // Random RDO lambda quality = rnd.frand(0.0, 2000.0f); } break; } case (uint32_t)codec_class::cASTC_LDR: case (uint32_t)codec_class::cXUASTC_LDR: { // ASTC/XUASTC LDR 4x4-12x12 // Choose random profile uint32_t xuastc_ldr_syntax = rnd.irand(0, (uint32_t)basist::astc_ldr_t::xuastc_ldr_syntax::cTotal - 1); flags |= (xuastc_ldr_syntax << cFlagXUASTCLDRSyntaxShift); // Choose random effort uint32_t effort = rnd.irand(basisu::astc_ldr::EFFORT_LEVEL_MIN, basisu::astc_ldr::EFFORT_LEVEL_MAX); flags |= effort; // Choose random weight grid DCT quality quality = (float)rnd.frand(1.0f, 100.0f); if (rnd.irand(0, 7) == 0) quality = 0.0f; // sometimes disable DCT break; } default: { assert(0); } } void* pComp_data = nullptr; image_stats stats; if (is_hdr) { basisu::vector hdr_source_images; imagef hdr_src_img(src_img.get_width(), src_img.get_height()); const float max_y = rnd.frand(.000125f, 30000.0f) / 255.0f; for (uint32_t y = 0; y < src_img.get_height(); y++) { for (uint32_t x = 0; x < src_img.get_width(); x++) { hdr_src_img(x, y)[0] = (float)src_img(x, y).r * max_y; hdr_src_img(x, y)[1] = (float)src_img(x, y).g * max_y; hdr_src_img(x, y)[2] = (float)src_img(x, y).b * max_y; hdr_src_img(x, y)[3] = 1.0f; } } //write_exr("test.exr", hdr_src_img, 3, 0); hdr_source_images.push_back(hdr_src_img); pComp_data = basisu::basis_compress(tex_mode, hdr_source_images, flags, quality, &comp_size, &stats); } else { basisu::vector ldr_source_images; ldr_source_images.push_back(src_img); //save_png("test.png", src_img); //save_png(fmt_string("test_{}.png", seed), src_img); pComp_data = basisu::basis_compress(tex_mode, ldr_source_images, flags, quality, &comp_size, &stats); } if (!pComp_data) { fprintf(stderr, "basisu::basis_compress() failed\n"); return false; } basisu::basis_free_data(pComp_data); const float psnr1 = stats.m_basis_rgba_avg_psnr ? stats.m_basis_rgba_avg_psnr : stats.m_basis_rgb_avg_psnr; const float psnr2 = stats.m_bc7_rgba_avg_psnr ? stats.m_bc7_rgba_avg_psnr : stats.m_basis_rgb_avg_bc6h_psnr; lowest_psnr1 = minimum(lowest_psnr1, psnr1); lowest_psnr2 = minimum(lowest_psnr2, psnr2); results.push_back( result{ seed, tex_mode, psnr1, psnr2 }); } // i printf("PSNR Results:\n"); for (uint32_t i = 0; i < results.size(); i++) fmt_printf("{},{},{},{}\n", results[i].m_seed, (uint32_t)results[i].m_fmt, results[i].m_psnr1, results[i].m_psnr2); printf("\n"); for (uint32_t i = 0; i < results.size(); i++) fmt_printf("seed={} tex_mode={}, psnr1={}, psnr2={}\n", results[i].m_seed, (uint32_t)results[i].m_fmt, results[i].m_psnr1, results[i].m_psnr2); // Success here is essentially not crashing or asserting or SAN'ing earlier printf("Success\n"); return true; } #ifdef FORCE_SAN_FAILURE static void force_san_failure() { // Purposely do things that should trigger the address sanitizer int arr[5] = { 0, 1, 2, 3, 4 }; printf("Out of bounds element: %d\n", arr[10]); //uint8_t* p = (uint8_t *)malloc(10); //p[10] = 99; //uint8_t* p = (uint8_t *)malloc(10); //free(p); //p[0] = 99; } #endif // FORCE_SAN_FAILURE int main(int arg_c, char* arg_v[]) { BASISU_NOTE_UNUSED(arg_c); BASISU_NOTE_UNUSED(arg_v); #if defined(DEBUG) | defined(_DEBUG) printf("DEBUG\n"); #endif #ifdef __SANITIZE_ADDRESS__ printf("__SANITIZE_ADDRESS__\n"); #endif #ifdef FORCE_SAN_FAILURE force_san_failure(); #endif #if USE_ENCODER basisu_encoder_init(USE_OPENCL, false); if (!random_compress_test()) return EXIT_FAILURE; if (!block_unpack_and_transcode_example()) return EXIT_FAILURE; fuzz_uastc_hdr_transcoder_test(); if (!encode_etc1s()) { fprintf(stderr, "encode_etc1s() failed!\n"); return EXIT_FAILURE; } if (!encode_uastc_hdr()) { fprintf(stderr, "encode_uastc_hdr() failed!\n"); return EXIT_FAILURE; } if (!encode_uastc_ldr()) { fprintf(stderr, "encode_uastc_ldr() failed!\n"); return EXIT_FAILURE; } #endif if (!transcode_hdr()) { fprintf(stderr, "transcode_hdr() failed!\n"); return EXIT_FAILURE; } printf("All functions succeeded\n"); return EXIT_SUCCESS; }