| <html> |
| <head> |
| <script src="renderer.js"></script> |
| <script src="dxt-to-rgb565.js"></script> |
| <script src="../encoder/build/basis_encoder.js"></script> |
| <script type="text/javascript"> |
| function log(s) { |
| var div = document.createElement('div'); |
| div.innerHTML = s; |
| document.getElementById('logger').appendChild(div); |
| } |
| |
| function logTime(desc, t) { |
| log(t + 'ms ' + desc); |
| } |
| |
| function isDef(v) { |
| return typeof v != 'undefined'; |
| } |
| |
| function elem(id) { |
| return document.getElementById(id); |
| } |
| |
| formatTable = function(rows) { |
| var colLengths = []; |
| |
| for (var i = 0; i < rows.length; i++) { |
| var row = rows[i]; |
| for (var j = 0; j < row.length; j++) { |
| if (colLengths.length <= j) colLengths.push(0); |
| if (colLengths[j] < row[j].length) colLengths[j] = row[j].length; |
| } |
| } |
| |
| function formatRow(row) { |
| var parts = []; |
| for (var i = 0; i < colLengths.length; i++) { |
| var s = row.length > i ? row[i] : ''; |
| var padding = (new Array(1 + colLengths[i] - s.length)).join(' '); |
| if (s && s[0] >= '0' && s[0] <= '9') { |
| // Right-align numbers. |
| parts.push(padding + s); |
| } else { |
| parts.push(s + padding); |
| } |
| } |
| return parts.join(' | '); |
| } |
| |
| var width = 0; |
| for (var i = 0; i < colLengths.length; i++) { |
| width += colLengths[i]; |
| // Add another 3 for the separator. |
| if (i != 0) width += 3; |
| } |
| |
| var lines = []; |
| lines.push(formatRow(rows[0])); |
| lines.push((new Array(width + 1)).join('-')); |
| for (var i = 1; i < rows.length; i++) { |
| lines.push(formatRow(rows[i])); |
| } |
| |
| return lines.join('\n'); |
| }; |
| |
| |
| function loadArrayBuffer(uri, callback) { |
| log('Loading ' + uri + '...'); |
| var xhr = new XMLHttpRequest(); |
| xhr.responseType = "arraybuffer"; |
| xhr.open('GET', uri, true); |
| xhr.onreadystatechange = function(e) { |
| if (xhr.readyState == 4 && xhr.status == 200) { |
| callback(xhr.response); |
| } |
| } |
| xhr.send(null); |
| } |
| |
| // ASTC format, from: |
| // https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_astc/ |
| COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93B0; |
| |
| // DXT formats, from: |
| // http://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/ |
| COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0; |
| COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1; |
| COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2; |
| COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3; |
| |
| // BC7 format, from: |
| // https://www.khronos.org/registry/webgl/extensions/EXT_texture_compression_bptc/ |
| COMPRESSED_RGBA_BPTC_UNORM = 0x8E8C; |
| |
| // ETC format, from: |
| // https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_etc1/ |
| COMPRESSED_RGB_ETC1_WEBGL = 0x8D64; |
| |
| // PVRTC format, from: |
| // https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_pvrtc/ |
| COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00; |
| COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02; |
| |
| // Same as the Module.transcoder_texture_format enum |
| BASIS_FORMAT = { |
| cTFETC1: 0, |
| cTFETC2: 1, |
| cTFBC1: 2, |
| cTFBC3: 3, |
| cTFBC4: 4, |
| cTFBC5: 5, |
| cTFBC7: 6, |
| cTFPVRTC1_4_RGB: 8, |
| cTFPVRTC1_4_RGBA: 9, |
| cTFASTC_4x4: 10, |
| cTFATC_RGB: 11, |
| cTFATC_RGBA_INTERPOLATED_ALPHA: 12, |
| cTFRGBA32: 13, |
| cTFRGB565: 14, |
| cTFBGR565: 15, |
| cTFRGBA4444: 16, |
| cTFFXT1_RGB: 17, |
| cTFPVRTC2_4_RGB: 18, |
| cTFPVRTC2_4_RGBA: 19, |
| cTFETC2_EAC_R11: 20, |
| cTFETC2_EAC_RG11: 21 |
| }; |
| |
| BASIS_FORMAT_NAMES = {}; |
| for (var name in BASIS_FORMAT) { |
| BASIS_FORMAT_NAMES[BASIS_FORMAT[name]] = name; |
| } |
| |
| DXT_FORMAT_MAP = {}; |
| DXT_FORMAT_MAP[BASIS_FORMAT.cTFBC1] = COMPRESSED_RGB_S3TC_DXT1_EXT; |
| DXT_FORMAT_MAP[BASIS_FORMAT.cTFBC3] = COMPRESSED_RGBA_S3TC_DXT5_EXT; |
| DXT_FORMAT_MAP[BASIS_FORMAT.cTFBC7] = COMPRESSED_RGBA_BPTC_UNORM; |
| |
| var astcSupported = false; |
| var etcSupported = false; |
| var dxtSupported = false; |
| var bc7Supported = false; |
| var pvrtcSupported = false; |
| var drawMode = 0; |
| |
| var tex, width, height, images, levels, have_alpha, alignedWidth, alignedHeight, format, displayWidth, displayHeight; |
| |
| function redraw() |
| { |
| if (!width) |
| return; |
| |
| renderer.drawTexture(tex, displayWidth, displayHeight, drawMode); |
| } |
| |
| function dumpBasisFileDesc(basisFile) |
| { |
| var basisFileDesc = basisFile.getFileDesc(); |
| |
| log('------'); |
| log('getFileDesc():'); |
| log('version: ' + basisFileDesc.version); |
| log('us per frame: ' + basisFileDesc.usPerFrame); |
| log('total images: ' + basisFileDesc.totalImages); |
| log('userdata0: ' + basisFileDesc.userdata0 + ' userdata1: ' + basisFileDesc.userdata1); |
| log('texFormat: ' + basisFileDesc.texFormat); |
| log('yFlipped: ' + basisFileDesc.yFlipped + ' hasAlphaSlices: ' + basisFileDesc.hasAlphaSlices); |
| |
| if (basisFileDesc.texFormat == Module.basis_tex_format.cETC1S.value) |
| { |
| log('numEndpoints: ' + basisFileDesc.numEndpoints); |
| log('endpointPaletteOfs: ' + basisFileDesc.endpointPaletteOfs); |
| log('endpointPaletteLen: ' + basisFileDesc.endpointPaletteLen); |
| log('numSelectors: ' + basisFileDesc.numSelectors); |
| log('selectorPaletteOfs: ' + basisFileDesc.selectorPaletteOfs); |
| log('selectorPaletteLen: ' + basisFileDesc.selectorPaletteLen); |
| log('tablesOfs: ' + basisFileDesc.tablesOfs); |
| log('tablesLen: ' + basisFileDesc.tablesLen); |
| } |
| log('------'); |
| log('getImageDesc() for all images:'); |
| var image_index; |
| for (image_index = 0; image_index < basisFileDesc.totalImages; image_index++) |
| { |
| log('image: ' + image_index); |
| |
| var basisImageDesc = basisFile.getImageDesc(image_index); |
| |
| log('origWidth: ' + basisImageDesc.origWidth + ' origWidth: ' + basisImageDesc.origHeight); |
| log('numBlocksX: ' + basisImageDesc.numBlocksX + ' origWidth: ' + basisImageDesc.numBlocksY); |
| log('numLevels: ' + basisImageDesc.numLevels); |
| log('alphaFlag: ' + basisImageDesc.alphaFlag + ' iframeFlag: ' + basisImageDesc.iframeFlag); |
| |
| log('getImageLevelDesc() for all mipmap levels:'); |
| var level_index; |
| for (level_index = 0; level_index < basisImageDesc.numLevels; level_index++) |
| { |
| var basisImageLevelDesc = basisFile.getImageLevelDesc(image_index, level_index); |
| |
| log('level: ' + level_index + |
| ' rgb_file_offset: ' + basisImageLevelDesc.rgbFileOfs + ' rgb_file_len: ' + basisImageLevelDesc.rgbFileLen); |
| |
| if (basisFileDesc.hasAlphaSlices) |
| log('alpha_file_offset: ' + basisImageLevelDesc.alphaFileOfs + ' alpha_file_len: ' + basisImageLevelDesc.alphaFileLen); |
| } |
| } |
| |
| log('------'); |
| } |
| |
| function dataLoaded(data) |
| { |
| log('Done loading .basis file, decoded header:'); |
| |
| const { BasisFile, initializeBasis, encodeBasisTexture } = Module; |
| initializeBasis(); |
| |
| const startTime = performance.now(); |
| |
| const basisFile = new BasisFile(new Uint8Array(data)); |
| |
| width = basisFile.getImageWidth(0, 0); |
| height = basisFile.getImageHeight(0, 0); |
| images = basisFile.getNumImages(); |
| levels = basisFile.getNumLevels(0); |
| has_alpha = basisFile.getHasAlpha(); |
| |
| dumpBasisFileDesc(basisFile); |
| |
| if (!width || !height || !images || !levels) { |
| console.warn('Invalid .basis file'); |
| basisFile.close(); |
| basisFile.delete(); |
| return; |
| } |
| |
| // Note: If the file is UASTC, the preferred formats are ASTC/BC7. |
| // If the file is ETC1S and doesn't have alpha, the preferred formats are ETC1 and BC1. For alpha, the preferred formats are ETC2, BC3 or BC7. |
| |
| var formatString = 'UNKNOWN'; |
| if (astcSupported) |
| { |
| formatString = 'ASTC'; |
| format = BASIS_FORMAT.cTFASTC_4x4; |
| } |
| else if (bc7Supported) |
| { |
| formatString = 'BC7'; |
| format = BASIS_FORMAT.cTFBC7; |
| } |
| else if (dxtSupported) |
| { |
| if (has_alpha) |
| { |
| formatString = 'BC3'; |
| format = BASIS_FORMAT.cTFBC3; |
| } |
| else |
| { |
| formatString = 'BC1'; |
| format = BASIS_FORMAT.cTFBC1; |
| } |
| } |
| else if (pvrtcSupported) |
| { |
| if (has_alpha) |
| { |
| formatString = 'PVRTC1_RGBA'; |
| format = BASIS_FORMAT.cTFPVRTC1_4_RGBA; |
| } |
| else |
| { |
| formatString = 'PVRTC1_RGB'; |
| format = BASIS_FORMAT.cTFPVRTC1_4_RGB; |
| } |
| |
| if ( |
| ((width & (width - 1)) != 0) || ((height & (height - 1)) != 0) |
| ) |
| { |
| log('ERROR: PVRTC1 requires square power of 2 textures'); |
| } |
| if (width != height) |
| { |
| log('ERROR: PVRTC1 requires square power of 2 textures'); |
| } |
| } |
| else if (etcSupported) |
| { |
| formatString = 'ETC1'; |
| format = BASIS_FORMAT.cTFETC1; |
| } |
| else |
| { |
| formatString = 'RGB565'; |
| format = BASIS_FORMAT.cTFRGB565; |
| log('Decoding .basis data to 565'); |
| } |
| |
| elem('format').innerText = formatString; |
| |
| if (!basisFile.startTranscoding()) { |
| log('startTranscoding failed'); |
| console.warn('startTranscoding failed'); |
| basisFile.close(); |
| basisFile.delete(); |
| return; |
| } |
| |
| const dstSize = basisFile.getImageTranscodedSizeInBytes(0, 0, format); |
| const dst = new Uint8Array(dstSize); |
| |
| //log(dstSize); |
| |
| // if (!basisFile.transcodeImage(dst, 0, 0, format, 1, 0)) { |
| if (!basisFile.transcodeImage(dst, 0, 0, format, 0, 0)) { |
| log('basisFile.transcodeImage failed'); |
| console.warn('transcodeImage failed'); |
| basisFile.close(); |
| basisFile.delete(); |
| |
| return; |
| } |
| |
| const elapsed = performance.now() - startTime; |
| |
| basisFile.close(); |
| basisFile.delete(); |
| |
| log('width: ' + width); |
| log('height: ' + height); |
| log('images: ' + images); |
| log('first image mipmap levels: ' + levels); |
| log('has_alpha: ' + has_alpha); |
| logTime('transcoding time', elapsed.toFixed(2)); |
| |
| alignedWidth = (width + 3) & ~3; |
| alignedHeight = (height + 3) & ~3; |
| |
| displayWidth = alignedWidth; |
| displayHeight = alignedHeight; |
| |
| var canvas = elem('canvas'); |
| canvas.width = alignedWidth; |
| canvas.height = alignedHeight; |
| |
| if (format === BASIS_FORMAT.cTFASTC_4x4) |
| { |
| tex = renderer.createCompressedTexture(dst, alignedWidth, alignedHeight, COMPRESSED_RGBA_ASTC_4x4_KHR); |
| } |
| else if ((format === BASIS_FORMAT.cTFBC3) || (format === BASIS_FORMAT.cTFBC1) || (format == BASIS_FORMAT.cTFBC7)) |
| { |
| tex = renderer.createCompressedTexture(dst, alignedWidth, alignedHeight, DXT_FORMAT_MAP[format]); |
| } |
| else if (format === BASIS_FORMAT.cTFETC1) |
| { |
| tex = renderer.createCompressedTexture(dst, alignedWidth, alignedHeight, COMPRESSED_RGB_ETC1_WEBGL); |
| } |
| else if (format === BASIS_FORMAT.cTFPVRTC1_4_RGB) |
| { |
| tex = renderer.createCompressedTexture(dst, alignedWidth, alignedHeight, COMPRESSED_RGB_PVRTC_4BPPV1_IMG); |
| } |
| else if (format === BASIS_FORMAT.cTFPVRTC1_4_RGBA) |
| { |
| tex = renderer.createCompressedTexture(dst, alignedWidth, alignedHeight, COMPRESSED_RGBA_PVRTC_4BPPV1_IMG); |
| } |
| else |
| { |
| canvas.width = width; |
| canvas.height = height; |
| displayWidth = width; |
| displayHeight = height; |
| |
| // Create 565 texture. |
| var dstTex = new Uint16Array(width * height); |
| |
| // Convert the array of bytes to an array of uint16's. |
| var pix = 0; |
| for (var y = 0; y < height; y++) |
| for (var x = 0; x < width; x++, pix++) |
| dstTex[pix] = dst[2 * pix + 0] | (dst[2 * pix + 1] << 8); |
| |
| tex = renderer.createRgb565Texture(dstTex, width, height); |
| } |
| |
| redraw(); |
| } |
| |
| function download_file(filename, body) |
| { |
| var element = document.createElement('a'); |
| |
| //element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text)); |
| |
| const blob = new Blob([body]); |
| const url = URL.createObjectURL(blob); |
| element.setAttribute('href', url); |
| |
| element.setAttribute('download', filename); |
| |
| element.style.display = 'none'; |
| document.body.appendChild(element); |
| |
| element.click(); |
| |
| document.body.removeChild(element); |
| } |
| |
| var encodedBasisFile; |
| |
| function PNGDataLoaded(data) |
| { |
| const { BasisFile, BasisEncoder, initializeBasis, encodeBasisTexture } = Module; |
| |
| initializeBasis(); |
| |
| // Create a destination buffer to hold the compressed .basis file data. If this buffer isn't large enough compression will fail. |
| var basisFileData = new Uint8Array(1024*1024*10); |
| |
| var num_output_bytes; |
| |
| // Compress using the BasisEncoder class. |
| log('BasisEncoder::encode() started:'); |
| |
| const basisEncoder = new BasisEncoder(); |
| |
| const qualityLevel = parseInt(elem('EncodeQuality').value, 10); |
| const uastcFlag = elem('EncodeUASTC').checked; |
| |
| basisEncoder.setSliceSourceImage(0, new Uint8Array(data), 0, 0, true); |
| basisEncoder.setDebug(elem('Debug').checked); |
| basisEncoder.setComputeStats(elem('ComputeStats').checked); |
| basisEncoder.setPerceptual(elem('SRGB').checked); |
| basisEncoder.setMipSRGB(elem('SRGB').checked); |
| basisEncoder.setQualityLevel(qualityLevel); |
| basisEncoder.setUASTC(uastcFlag); |
| basisEncoder.setMipGen(elem('Mipmaps').checked); |
| |
| if (!uastcFlag) |
| log('Encoding at ETC1S quality level ' + qualityLevel); |
| |
| const startTime = performance.now(); |
| |
| num_output_bytes = basisEncoder.encode(basisFileData); |
| |
| const elapsed = performance.now() - startTime; |
| |
| logTime('encoding time', elapsed.toFixed(2)); |
| |
| var actualBasisFileData = new Uint8Array(basisFileData.buffer, 0, num_output_bytes); |
| |
| basisEncoder.delete(); |
| |
| if (num_output_bytes == 0) |
| { |
| log('encodeBasisTexture() failed!'); |
| } |
| else |
| { |
| log('encodeBasisTexture() succeeded, output size ' + num_output_bytes); |
| |
| encodedBasisFile = actualBasisFileData; |
| |
| //download("test.basis", actualBasisFileData); |
| } |
| |
| if (num_output_bytes != 0) |
| { |
| dataLoaded(actualBasisFileData); |
| } |
| } |
| |
| function runLoadFile() { |
| elem('logger').innerHTML = ''; |
| loadArrayBuffer(elem('file').value, dataLoaded); |
| } |
| |
| function runEncodePNGFile() { |
| elem('logger').innerHTML = ''; |
| loadArrayBuffer(elem('pngfile').value, PNGDataLoaded); |
| } |
| |
| function alphaBlend() { drawMode = 0; redraw(); } |
| function viewRGB() { drawMode = 1; redraw(); } |
| function viewAlpha() { drawMode = 2; redraw(); } |
| |
| function downloadEncodedFile() |
| { |
| if (encodedBasisFile) |
| { |
| if (encodedBasisFile.length) |
| download_file("encoded_file.basis", encodedBasisFile); |
| } |
| } |
| |
| </script> |
| </head> |
| <body> |
| <br> |
| <div style="font-size: 24pt; font-weight: bold"> |
| Basis Universal compressed texture transcoding and encoding test |
| </div> |
| |
| <br>This demo uses the Basis C++ transcoder (compiled to Javascript using Emscripten) to transcode a .basis file to <b id='format'>FORMAT</b> |
| <br>Thanks to Evan Parker for providing <a href="https://github.com/toji/webgl-texture-utils">webgl-texture-utils</a> and this test bed. |
| <br> |
| <br> |
| .basis file: |
| <input id="file" type="text" size=30 value="assets/kodim26_uastc_1024.basis"></input> |
| <input type="button" value="Transcode!" onclick="runLoadFile()"></input> |
| <br> |
| |
| <br> |
| .png file: |
| <input id="pngfile" type="text" size=30 value="assets/kodim18_64x64.png"></input> |
| <input type="button" value="Encode!" onclick="runEncodePNGFile()"></input> |
| <br> |
| <input type="button" value="Download Encoded .basis File" onclick="downloadEncodedFile()"> |
| <br> |
| Debug: |
| <input type="checkbox" id="Debug"> |
| <br> |
| Compute Stats: |
| <input type="checkbox" id="ComputeStats"> |
| <br> |
| sRGB: |
| <input type="checkbox" id="SRGB"> |
| <br> |
| Mipmaps: |
| <input type="checkbox" id="Mipmaps"> |
| <br> |
| UASTC: |
| <input type="checkbox" id="EncodeUASTC"> |
| |
| |
| <br> |
| |
| ETC1S Quality: |
| <input type="range" min="1" max="255" value="10" class="slider" id="EncodeQuality"> |
| |
| <br> |
| |
| <br> |
| <input type="button" value="Alpha blend" onclick="alphaBlend()"></input> |
| <input type="button" value="View RGB" onclick="viewRGB()"></input> |
| <input type="button" value="View Alpha" onclick="viewAlpha()"></input> |
| |
| <div style="position:absolute; left: 525px; top:130px; font-size: 20pt; font-weight: bold; color: red"> |
| <div id="no-compressed-tex" style="display: none; width: 768px; font-size: 20pt; font-weight: bold; color: red"> |
| NOTE: Your browser does not support several compressed texture format, so using RGB565. |
| </div> |
| <canvas id='canvas'></canvas> |
| </div> |
| <br><br> |
| <div id='logger'></div> |
| </body> |
| <script> |
| BASIS({onRuntimeInitialized : () => { |
| |
| elem('SRGB').checked = true; |
| |
| var gl = elem('canvas').getContext('webgl'); |
| |
| astcSupported = !!gl.getExtension('WEBGL_compressed_texture_astc'); |
| etcSupported = !!gl.getExtension('WEBGL_compressed_texture_etc1'); |
| dxtSupported = !!gl.getExtension('WEBGL_compressed_texture_s3tc'); |
| pvrtcSupported = !!(gl.getExtension('WEBGL_compressed_texture_pvrtc')) || !!(gl.getExtension('WEBKIT_WEBGL_compressed_texture_pvrtc')); |
| bc7Supported = !!gl.getExtension('EXT_texture_compression_bptc'); |
| |
| // HACK HACK - for testing uncompressed |
| //astcSupported = false; |
| //etcSupported = false; |
| //dxtSupported = false; |
| //bc7Supported = false; |
| //pvrtcSupported = false; |
| |
| window.renderer = new Renderer(gl); |
| |
| elem('file').addEventListener('keydown', function(e) { |
| if (e.keyCode == 13) { |
| runLoadFile(); |
| } |
| }, false); |
| |
| if (!(astcSupported || etcSupported || dxtSupported || pvrtcSupported)) |
| { |
| // elem('nodxt').style.display = 'block'; |
| } |
| |
| runLoadFile(); |
| }}).then(module => window.Module = module); |
| </script> |
| </html> |
