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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 the max advertized texture size is supported.</title> | |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 12 <script src="../../resources/js-test-pre.js"></script> | |
| 13 <script src="../resources/webgl-test.js"> </script> | |
| 14 <script src="../resources/webgl-test-utils.js"> </script> | |
| 15 </head> | |
| 16 <body> | |
| 17 <canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></c
anvas> | |
| 18 <div id="description"></div> | |
| 19 <div id="console"></div> | |
| 20 <script id="vshader" type="x-shader/x-vertex"> | |
| 21 attribute vec4 vPosition; | |
| 22 attribute vec2 texCoord0; | |
| 23 varying vec2 texCoord; | |
| 24 void main() | |
| 25 { | |
| 26 gl_Position = vPosition; | |
| 27 texCoord = texCoord0; | |
| 28 } | |
| 29 </script> | |
| 30 | |
| 31 <script id="fshader" type="x-shader/x-fragment"> | |
| 32 precision mediump float; | |
| 33 uniform samplerCube tex; | |
| 34 varying vec2 texCoord; | |
| 35 void main() | |
| 36 { | |
| 37 gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1))); | |
| 38 } | |
| 39 </script> | |
| 40 <script> | |
| 41 var wtu = WebGLTestUtils; | |
| 42 var canvas = document.getElementById("example"); | |
| 43 var gl = wtu.create3DContext(canvas); | |
| 44 var program = wtu.setupTexturedQuad(gl); | |
| 45 | |
| 46 // Note: It seems like a reasonable assuption that a 1xN texture size should | |
| 47 // work. Even 1 by 128k is only 512k | |
| 48 var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); | |
| 49 debug("advertised max size: " + maxSize); | |
| 50 var testSize = Math.min(maxSize, 128 * 1024); | |
| 51 var pixels = new Uint8Array(testSize * 4); | |
| 52 for (var ii = 0; ii < testSize; ++ii) { | |
| 53 var off = ii * 4; | |
| 54 pixels[off + 0] = 0; | |
| 55 pixels[off + 1] = 255; | |
| 56 pixels[off + 2] = 128; | |
| 57 pixels[off + 3] = 255; | |
| 58 } | |
| 59 var tex = gl.createTexture(); | |
| 60 gl.bindTexture(gl.TEXTURE_2D, tex); | |
| 61 | |
| 62 debug("test " + testSize + "x1"); | |
| 63 gl.texImage2D( | |
| 64 gl.TEXTURE_2D, 0, gl.RGBA, testSize, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, | |
| 65 pixels); | |
| 66 gl.generateMipmap(gl.TEXTURE_2D); | |
| 67 | |
| 68 wtu.drawQuad(gl); | |
| 69 wtu.checkCanvas(gl, [0, 255, 128, 255], | |
| 70 "Should be 0, 255, 128, 255"); | |
| 71 debug("test 1x" + testSize); | |
| 72 gl.texImage2D( | |
| 73 gl.TEXTURE_2D, 0, gl.RGBA, 1, testSize, 0, gl.RGBA, gl.UNSIGNED_BYTE, | |
| 74 pixels); | |
| 75 gl.generateMipmap(gl.TEXTURE_2D); | |
| 76 | |
| 77 wtu.drawQuad(gl); | |
| 78 wtu.checkCanvas(gl, [0, 255, 128, 255], | |
| 79 "Should be 0, 255, 128, 255"); | |
| 80 | |
| 81 var program = wtu.setupProgram( | |
| 82 gl, | |
| 83 [wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER), | |
| 84 wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER)], | |
| 85 ['vPosition', 'texCoord0'], [0, 1]); | |
| 86 | |
| 87 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors."); | |
| 88 | |
| 89 // NOTE: We can't easily test cube maps because they require width == height | |
| 90 // and we might not have enough memory for maxSize by maxSize texture. | |
| 91 | |
| 92 successfullyParsed = true; | |
| 93 | |
| 94 </script> | |
| 95 <script src="../../resources/js-test-post.js"></script> | |
| 96 | |
| 97 </body> | |
| 98 </html> | |
| 99 | |
| 100 | |
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Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/