Index: conformance/extensions/webgl-compressed-texture-size-limit.html |
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--- conformance/extensions/webgl-compressed-texture-size-limit.html (revision 0) |
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+<!-- |
+ |
+/* |
+** Copyright (c) 2013 The Khronos Group Inc. |
+** |
+** Permission is hereby granted, free of charge, to any person obtaining a |
+** copy of this software and/or associated documentation files (the |
+** "Materials"), to deal in the Materials without restriction, including |
+** without limitation the rights to use, copy, modify, merge, publish, |
+** distribute, sublicense, and/or sell copies of the Materials, and to |
+** permit persons to whom the Materials are furnished to do so, subject to |
+** the following conditions: |
+** |
+** The above copyright notice and this permission notice shall be included |
+** in all copies or substantial portions of the Materials. |
+** |
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
+*/ |
+ |
+--> |
+ |
+<!DOCTYPE html> |
+<html> |
+<head> |
+<meta charset="utf-8"> |
+<title>WebGL compressed texture size limit conformance test</title> |
+<link rel="stylesheet" href="../../resources/js-test-style.css"/> |
+<script src="../../resources/js-test-pre.js"></script> |
+<script src="../resources/webgl-test.js"> </script> |
+<script src="../resources/webgl-test-utils.js"></script> |
+</head> |
+<body> |
+<canvas id="example" width="32" height="32" style="width: 40px; height: 40px;"></canvas> |
+<div id="description"></div> |
+<div id="console"></div> |
+<script> |
+"use strict"; |
+description("Checks size limit of the webgl compressed textures") |
+var canvas; |
+ |
+function numLevelsFromSize(size) { |
+ var levels = 0; |
+ while ((size >> levels) > 0) { |
+ ++levels; |
+ } |
+ return levels; |
+} |
+ |
+// More formats can be added here when more texture compression extensions is enabled in WebGL. |
+var validFormats = { |
+ COMPRESSED_RGB_S3TC_DXT1_EXT : 0x83F0, |
+ COMPRESSED_RGBA_S3TC_DXT1_EXT : 0x83F1, |
+ COMPRESSED_RGBA_S3TC_DXT3_EXT : 0x83F2, |
+ COMPRESSED_RGBA_S3TC_DXT5_EXT : 0x83F3, |
+}; |
+ |
+// format specific restrictions for COMPRESSED_RGB_S3TC_DXT1_EXT and COMPRESSED_RGBA_S3TC_DXT1_EXT |
+// on the byteLength of the ArrayBufferView, pixels |
+function func1 (width, height) |
+{ |
+ return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * 8; |
+} |
+ |
+// format specific restrictions for COMPRESSED_RGBA_S3TC_DXT3_EXT and COMPRESSED_RGBA_S3TC_DXT5_EXT |
+// on the byteLength of the ArrayBufferView, pixels |
+function func2 (width, height) |
+{ |
+ return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * 16; |
+} |
+ |
+var wtu = WebGLTestUtils; |
+var gl = wtu.create3DContext("example"); |
+var tests = [ |
+ // More tests can be added here when more texture compression extensions is enabled in WebGL. |
+ { extension: "WEBGL_compressed_texture_s3tc", format: validFormats.COMPRESSED_RGB_S3TC_DXT1_EXT, dataType: Uint8Array, func: func1}, |
+ { extension: "WEBGL_compressed_texture_s3tc", format: validFormats.COMPRESSED_RGBA_S3TC_DXT1_EXT, dataType: Uint8Array, func: func1}, |
+ { extension: "WEBGL_compressed_texture_s3tc", format: validFormats.COMPRESSED_RGBA_S3TC_DXT3_EXT, dataType: Uint8Array, func: func2}, |
+ { extension: "WEBGL_compressed_texture_s3tc", format: validFormats.COMPRESSED_RGBA_S3TC_DXT5_EXT, dataType: Uint8Array, func: func2}, |
+]; |
+ |
+// Note: We expressly only use 2 textures because first a texture will be defined |
+// as using all mips of 1 format, then for a moment it will have mixed formats which |
+// may uncover bugs. |
+var targets = [ |
+ { target: gl.TEXTURE_2D, |
+ maxSize: gl.getParameter(gl.MAX_TEXTURE_SIZE), |
+ tex: gl.createTexture(), |
+ targets: [gl.TEXTURE_2D] |
+ }, |
+ { target: gl.TEXTURE_CUBE_MAP, |
+ maxSize: gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE), |
+ tex: gl.createTexture(), |
+ targets: [ |
+ gl.TEXTURE_CUBE_MAP_POSITIVE_X, |
+ gl.TEXTURE_CUBE_MAP_NEGATIVE_X, |
+ gl.TEXTURE_CUBE_MAP_POSITIVE_Y, |
+ gl.TEXTURE_CUBE_MAP_NEGATIVE_Y, |
+ gl.TEXTURE_CUBE_MAP_POSITIVE_Z, |
+ gl.TEXTURE_CUBE_MAP_NEGATIVE_Z |
+ ] |
+ } |
+]; |
+ |
+gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1); |
+ |
+var trg = 0; |
+var tt = 0; |
+runNextTest(); |
+ |
+function runNextTest() { |
+ var t = targets[trg]; |
+ |
+ if (tt == 0) { |
+ var tex = t.tex; |
+ gl.bindTexture(t.target, tex); |
+ |
+ debug(""); |
+ debug("max size for " + wtu.glEnumToString(gl, t.target) + ": " + t.maxSize); |
+ var numLevels = numLevelsFromSize(t.maxSize); |
+ debug("num levels " + numLevels); |
+ } |
+ |
+ var test = tests[tt]; |
+ testFormatType(t, test); |
+ ++tt; |
+ if (tt == tests.length) { |
+ tt = 0; |
+ ++trg; |
+ if (trg == targets.length) { |
+ finishTest(); |
+ return; |
+ } |
+ } |
+ wtu.waitForComposite(gl, runNextTest) |
+} |
+ |
+function testFormatType(t, test) { |
+ debug(""); |
+ |
+ // Query the extension and store globally so shouldBe can access it |
+ var ext = wtu.getExtensionWithKnownPrefixes(gl, test.extension); |
+ if (ext) { |
+ testPassed("Successfully enabled " + test.extension + " extension"); |
+ |
+ for (var j = 0; j < t.targets.length; ++j) { |
+ var target = t.targets[j]; |
+ debug(""); |
+ debug(wtu.glEnumToString(gl, target)); |
+ var numLevels = numLevelsFromSize(t.maxSize); |
+ |
+ // positive test |
+ for (var i = 0, size = t.maxSize; i < numLevels; i++, size /= 2) { |
+ var pixels = new test.dataType(test.func(size, size)); |
+ gl.compressedTexImage2D(target, i, test.format, size, size, 0, pixels); |
+ glErrorShouldBe(gl, gl.NO_ERROR, "uploading compressed texture should generate NO_ERROR." |
+ + "level is " + i + ", size is " + size + "x" + size); |
+ } |
+ |
+ // out of bound test |
+ // width or height out of bound |
+ var pixelsNegativeTest1 = new test.dataType(test.func(t.maxSize * 2, t.maxSize * 2)); |
+ gl.compressedTexImage2D(target, 0, test.format, t.maxSize * 2, t.maxSize * 2, 0, pixelsNegativeTest1); |
+ glErrorShouldBe(gl, gl.INVALID_VALUE, "width or height out of bound: should generate INVALID_VALUE." |
+ + " level is 0, size is " + (t.maxSize * 2) + "x" + (t.maxSize * 2)); |
+ // level out of bound |
+ var pixelsNegativeTest2 = new test.dataType(test.func(256, 256)); |
+ gl.compressedTexImage2D(target, numLevels, test.format, 256, 256, 0, pixelsNegativeTest2); |
+ glErrorShouldBe(gl, gl.INVALID_VALUE, "level out of bound: should generate INVALID_VALUE." |
+ + " level is " + numLevels + ", size is 256x256"); |
+ //width or height out of bound for specified level |
+ gl.compressedTexImage2D(target, numLevels - 1, test.format, 256, 256, 0, pixelsNegativeTest2); |
+ glErrorShouldBe(gl, gl.INVALID_VALUE, "width or height out of bound for specified level: should generate INVALID_VALUE." |
+ + " level is " + (numLevels - 1) + ", size is 256x256"); |
+ } |
+ } |
+ else |
+ testPassed("No " + test.extension + " extension support -- this is legal"); |
+} |
+ |
+var successfullyParsed = true; |
+</script> |
+</body> |
+</html> |
+ |
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