| <!-- |
| 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_etc 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_etc extension, if it is available."); |
| |
| debug(""); |
| |
| var validFormats = { |
| COMPRESSED_R11_EAC : 0x9270, |
| COMPRESSED_SIGNED_R11_EAC : 0x9271, |
| COMPRESSED_RG11_EAC : 0x9272, |
| COMPRESSED_SIGNED_RG11_EAC : 0x9273, |
| COMPRESSED_RGB8_ETC2 : 0x9274, |
| COMPRESSED_SRGB8_ETC2 : 0x9275, |
| COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9276, |
| COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9277, |
| COMPRESSED_RGBA8_ETC2_EAC : 0x9278, |
| COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : 0x9279 |
| }; |
| |
| function expectedByteLength(width, height, format) { |
| var blockSizeInBytes = 8; |
| |
| var largerBlockFormats = [ |
| validFormats.COMPRESSED_RG11_EAC, |
| validFormats.COMPRESSED_SIGNED_RG11_EAC, |
| validFormats.COMPRESSED_RGBA8_ETC2_EAC, |
| validFormats.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC]; |
| |
| if (largerBlockFormats.indexOf(format) >= 0) { |
| blockSizeInBytes = 16; |
| } |
| |
| return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * blockSizeInBytes; |
| } |
| |
| 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_etc; |
| |
| 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_etc = gl.getExtension("WEBGL_compressed_texture_etc"); |
| |
| wtu.runExtensionSupportedTest(gl, "WEBGL_compressed_texture_etc", WEBGL_compressed_texture_etc !== null); |
| |
| var isPositive = WEBGL_compressed_texture_etc !== null; |
| |
| if (isPositive) { |
| // Test that enum values are listed correctly in supported formats and in the extension object. |
| ctu.testCompressedFormatsListed(gl, validFormats); |
| ctu.testCorrectEnumValuesInExt(WEBGL_compressed_texture_etc, validFormats); |
| // Test that texture upload buffer size is validated correctly. |
| ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions); |
| |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| |
| for (var name in validFormats) { |
| if (validFormats.hasOwnProperty(name)) { |
| var format = validFormats[name]; |
| wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, " + format + ", 4, 4, 0, new Uint8Array(" + expectedByteLength(4, 4, format) + "))"); |
| wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 4, 4, " + format + ", new Uint8Array(" + expectedByteLength(4, 4, format) + "))"); |
| } |
| } |
| } |
| |
| var tex2 = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex2); |
| |
| debug(""); |
| if (contextVersion >= 2) { |
| var expectedError = isPositive ? gl.INVALID_OPERATION: [gl.INVALID_ENUM, gl.INVALID_OPERATION]; |
| // `null` coerces into `0` for the PBO entrypoint, yielding INVALID_OP due to no PBO bound. |
| wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, 0, null)"); |
| wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)"); |
| wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, 0, null)"); |
| wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)"); |
| } else { |
| shouldThrow("gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, null)"); |
| shouldThrow("gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)"); |
| shouldThrow("gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, null)"); |
| shouldThrow("gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)"); |
| } |
| } |
| } |
| |
| runTest(); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| </body> |
| </html> |