webgl-compressed-texture-etc.html (5138B)
1 <!-- 2 Copyright (c) 2019 The Khronos Group Inc. 3 Use of this source code is governed by an MIT-style license that can be 4 found in the LICENSE.txt file. 5 --> 6 7 <!DOCTYPE html> 8 <html> 9 <head> 10 <meta charset="utf-8"> 11 <title>WebGL WEBGL_compressed_texture_etc Conformance Tests</title> 12 <LINK rel="stylesheet" href="../../resources/js-test-style.css"/> 13 <script src="../../js/js-test-pre.js"></script> 14 <script src="../../js/webgl-test-utils.js"></script> 15 <script src="../../js/tests/compressed-texture-utils.js"></script> 16 </head> 17 <body> 18 <div id="description"></div> 19 <div id="console"></div> 20 <script> 21 "use strict"; 22 description("This test verifies the functionality of the WEBGL_compressed_texture_etc extension, if it is available."); 23 24 debug(""); 25 26 var validFormats = { 27 COMPRESSED_R11_EAC : 0x9270, 28 COMPRESSED_SIGNED_R11_EAC : 0x9271, 29 COMPRESSED_RG11_EAC : 0x9272, 30 COMPRESSED_SIGNED_RG11_EAC : 0x9273, 31 COMPRESSED_RGB8_ETC2 : 0x9274, 32 COMPRESSED_SRGB8_ETC2 : 0x9275, 33 COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9276, 34 COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9277, 35 COMPRESSED_RGBA8_ETC2_EAC : 0x9278, 36 COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : 0x9279 37 }; 38 39 function expectedByteLength(width, height, format) { 40 var blockSizeInBytes = 8; 41 42 var largerBlockFormats = [ 43 validFormats.COMPRESSED_RG11_EAC, 44 validFormats.COMPRESSED_SIGNED_RG11_EAC, 45 validFormats.COMPRESSED_RGBA8_ETC2_EAC, 46 validFormats.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC]; 47 48 if (largerBlockFormats.indexOf(format) >= 0) { 49 blockSizeInBytes = 16; 50 } 51 52 return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * blockSizeInBytes; 53 } 54 55 function getBlockDimensions(format) { 56 return {width: 4, height: 4}; 57 } 58 59 var wtu = WebGLTestUtils; 60 var ctu = CompressedTextureUtils; 61 var contextVersion = wtu.getDefault3DContextVersion(); 62 var gl = wtu.create3DContext(); 63 var WEBGL_compressed_texture_etc; 64 65 var formats = null; 66 67 function runTest() { 68 if (!gl) { 69 testFailed("context does not exist"); 70 } else { 71 testPassed("context exists"); 72 73 ctu.testCompressedFormatsUnavailableWhenExtensionDisabled(gl, validFormats, expectedByteLength, 4); 74 75 WEBGL_compressed_texture_etc = gl.getExtension("WEBGL_compressed_texture_etc"); 76 77 wtu.runExtensionSupportedTest(gl, "WEBGL_compressed_texture_etc", WEBGL_compressed_texture_etc !== null); 78 79 var isPositive = WEBGL_compressed_texture_etc !== null; 80 81 if (isPositive) { 82 // Test that enum values are listed correctly in supported formats and in the extension object. 83 ctu.testCompressedFormatsListed(gl, validFormats); 84 ctu.testCorrectEnumValuesInExt(WEBGL_compressed_texture_etc, validFormats); 85 // Test that texture upload buffer size is validated correctly. 86 ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions); 87 88 var tex = gl.createTexture(); 89 gl.bindTexture(gl.TEXTURE_2D, tex); 90 91 for (var name in validFormats) { 92 if (validFormats.hasOwnProperty(name)) { 93 var format = validFormats[name]; 94 wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, " + format + ", 4, 4, 0, new Uint8Array(" + expectedByteLength(4, 4, format) + "))"); 95 wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 4, 4, " + format + ", new Uint8Array(" + expectedByteLength(4, 4, format) + "))"); 96 } 97 } 98 } 99 100 var tex2 = gl.createTexture(); 101 gl.bindTexture(gl.TEXTURE_2D, tex2); 102 103 debug(""); 104 if (contextVersion >= 2) { 105 var expectedError = isPositive ? gl.INVALID_OPERATION: [gl.INVALID_ENUM, gl.INVALID_OPERATION]; 106 // `null` coerces into `0` for the PBO entrypoint, yielding INVALID_OP due to no PBO bound. 107 wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, 0, null)"); 108 wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)"); 109 wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, 0, null)"); 110 wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)"); 111 } else { 112 shouldThrow("gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, null)"); 113 shouldThrow("gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)"); 114 shouldThrow("gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, null)"); 115 shouldThrow("gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)"); 116 } 117 } 118 } 119 120 runTest(); 121 122 var successfullyParsed = true; 123 </script> 124 <script src="../../js/js-test-post.js"></script> 125 </body> 126 </html>