| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL WEBGL_compressed_texture_etc1 Conformance Tests</title> |
| <LINK rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| <script src="../../js/tests/compressed-texture-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("This test verifies the functionality of the WEBGL_compressed_texture_etc1 extension, if it is available."); |
| |
| debug(""); |
| |
| var validFormats = { |
| COMPRESSED_RGB_ETC1_WEBGL: 0x8D64, |
| }; |
| |
| function expectedByteLength(width, height, format) { |
| return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * 8; |
| } |
| |
| function getBlockDimensions(format) { |
| return {width: 4, height: 4}; |
| } |
| |
| var wtu = WebGLTestUtils; |
| var ctu = CompressedTextureUtils; |
| var contextVersion = wtu.getDefault3DContextVersion(); |
| var gl = wtu.create3DContext(); |
| var WEBGL_compressed_texture_etc1; |
| |
| var formats = null; |
| |
| function runTest() { |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| ctu.testCompressedFormatsUnavailableWhenExtensionDisabled(gl, validFormats, expectedByteLength, 4); |
| |
| WEBGL_compressed_texture_etc1 = gl.getExtension("WEBGL_compressed_texture_etc1"); |
| |
| wtu.runExtensionSupportedTest(gl, "WEBGL_compressed_texture_etc1", WEBGL_compressed_texture_etc1 !== null); |
| |
| if (WEBGL_compressed_texture_etc1 !== null) { |
| // Test that enum values are listed correctly in supported formats and in the extension object. |
| ctu.testCompressedFormatsListed(gl, validFormats); |
| ctu.testCorrectEnumValuesInExt(WEBGL_compressed_texture_etc1, validFormats); |
| // Test that texture upload buffer size is validated correctly. |
| ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions); |
| } |
| } |
| } |
| |
| runTest(); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| </body> |
| </html> |
