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| 1 <!-- |
| 2 Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 3 Use of this source code is governed by a BSD-style license that can be |
| 4 found in the LICENSE file. |
| 5 --> |
| 6 <!DOCTYPE html> |
| 7 <html> |
| 8 <head> |
| 9 <meta charset="utf-8"> |
| 10 <title>WebGL vertexAttribPointer Conformance Tests</title> |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 12 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></s
cript> |
| 13 <script src="../../resources/js-test-pre.js"></script> |
| 14 <script src="../resources/webgl-test.js"></script> |
| 15 <script src="../resources/webgl-test-utils.js"></script> |
| 16 </head> |
| 17 <body> |
| 18 <div id="description"></div> |
| 19 <div id="console"></div> |
| 20 <canvas id="canvas" width="2" height="2"> </canvas> |
| 21 <script> |
| 22 description("This test checks vertexAttribPointer behaviors in WebGL."); |
| 23 |
| 24 debug(""); |
| 25 debug("Canvas.getContext"); |
| 26 |
| 27 var wtu = WebGLTestUtils; |
| 28 var gl = create3DContext(document.getElementById("canvas")); |
| 29 if (!gl) { |
| 30 testFailed("context does not exist"); |
| 31 } else { |
| 32 testPassed("context exists"); |
| 33 |
| 34 debug(""); |
| 35 debug("Checking gl.vertexAttribPointer."); |
| 36 |
| 37 if (!gl.FIXED) { |
| 38 gl.FIXED = 0x140C; |
| 39 } |
| 40 |
| 41 gl.vertexAttribPointer(0, 3, gl.FLOAT, 0, 0, 12); |
| 42 glErrorShouldBe(gl, gl.INVALID_OPERATION, |
| 43 "vertexAttribPointer should fail if no buffer is bound"); |
| 44 |
| 45 var vertexObject = gl.createBuffer(); |
| 46 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 47 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(0), gl.STATIC_DRAW); |
| 48 |
| 49 gl.vertexAttribPointer(0, 1, gl.INT, 0, 0, 0); |
| 50 glErrorShouldBe(gl, gl.INVALID_ENUM, |
| 51 "vertexAttribPointer should not support INT"); |
| 52 gl.vertexAttribPointer(0, 1, gl.UNSIGNED_INT, 0, 0, 0); |
| 53 glErrorShouldBe(gl, gl.INVALID_ENUM, |
| 54 "vertexAttribPointer should not support UNSIGNED_INT"); |
| 55 gl.vertexAttribPointer(0, 1, gl.FIXED, 0, 0, 0); |
| 56 glErrorShouldBe(gl, gl.INVALID_ENUM, |
| 57 "vertexAttribPointer should not support FIXED"); |
| 58 |
| 59 function checkVertexAttribPointer( |
| 60 gl, err, reason, size, type, normalize, stride, offset) { |
| 61 gl.vertexAttribPointer(0, size, type, normalize, stride, offset); |
| 62 glErrorShouldBe(gl, err, |
| 63 "gl.vertexAttribPointer(0, " + size + |
| 64 ", gl." + wtu.glEnumToString(gl, type) + |
| 65 ", " + normalize + |
| 66 ", " + stride + |
| 67 ", " + offset + |
| 68 ") should " + (err == gl.NO_ERROR ? "succeed " : "fail ") + reason); |
| 69 } |
| 70 |
| 71 var types = [ |
| 72 { type:gl.BYTE, bytesPerComponent: 1 }, |
| 73 { type:gl.UNSIGNED_BYTE, bytesPerComponent: 1 }, |
| 74 { type:gl.SHORT, bytesPerComponent: 2 }, |
| 75 { type:gl.UNSIGNED_SHORT, bytesPerComponent: 2 }, |
| 76 { type:gl.FLOAT, bytesPerComponent: 4 }, |
| 77 ]; |
| 78 |
| 79 for (var ii = 0; ii < types.length; ++ii) { |
| 80 var info = types[ii]; |
| 81 debug(""); |
| 82 for (var size = 1; size <= 4; ++size) { |
| 83 debug(""); |
| 84 debug("checking: " + wtu.glEnumToString(gl, info.type) + " with size " + s
ize); |
| 85 var bytesPerElement = size * info.bytesPerComponent; |
| 86 var offsetSet = [ |
| 87 0, |
| 88 1, |
| 89 info.bytesPerComponent - 1, |
| 90 info.bytesPerComponent, |
| 91 info.bytesPerComponent + 1, |
| 92 info.bytesPerComponent * 2]; |
| 93 for (var jj = 0; jj < offsetSet.length; ++jj) { |
| 94 var offset = offsetSet[jj]; |
| 95 for (var kk = 0; kk < offsetSet.length; ++kk) { |
| 96 var stride = offsetSet[kk]; |
| 97 var err = gl.NO_ERROR; |
| 98 var reason = "" |
| 99 if (offset % info.bytesPerComponent != 0) { |
| 100 reason = "because offset is bad"; |
| 101 err = gl.INVALID_OPERATION; |
| 102 } |
| 103 if (stride % info.bytesPerComponent != 0) { |
| 104 reason = "because stride is bad"; |
| 105 err = gl.INVALID_OPERATION; |
| 106 } |
| 107 checkVertexAttribPointer( |
| 108 gl, err, reason, size, info.type, false, stride, offset); |
| 109 } |
| 110 var stride = Math.floor(255 / info.bytesPerComponent) * info.bytesPerCom
ponent; |
| 111 |
| 112 if (offset == 0) { |
| 113 checkVertexAttribPointer( |
| 114 gl, gl.NO_ERROR, "at stride limit", |
| 115 size, info.type, false, stride, offset); |
| 116 checkVertexAttribPointer( |
| 117 gl, gl.INVALID_VALUE, "over stride limit", |
| 118 size, info.type, false, |
| 119 stride + info.bytesPerComponent, offset); |
| 120 } |
| 121 } |
| 122 } |
| 123 } |
| 124 } |
| 125 |
| 126 debug(""); |
| 127 successfullyParsed = true; |
| 128 |
| 129 </script> |
| 130 <script src="../../resources/js-test-post.js"></script> |
| 131 |
| 132 </body> |
| 133 </html> |
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Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/