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| 1 <!-- |
| 2 |
| 3 /* |
| 4 ** Copyright (c) 2012 The Khronos Group Inc. |
| 5 ** |
| 6 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 7 ** copy of this software and/or associated documentation files (the |
| 8 ** "Materials"), to deal in the Materials without restriction, including |
| 9 ** without limitation the rights to use, copy, modify, merge, publish, |
| 10 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 11 ** permit persons to whom the Materials are furnished to do so, subject to |
| 12 ** the following conditions: |
| 13 ** |
| 14 ** The above copyright notice and this permission notice shall be included |
| 15 ** in all copies or substantial portions of the Materials. |
| 16 ** |
| 17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 24 */ |
| 25 |
| 26 --> |
| 27 |
| 28 <!DOCTYPE html> |
| 29 <html> |
| 30 <head> |
| 31 <meta charset="utf-8"> |
| 32 <title>WebGL the max advertized texture size is supported.</title> |
| 33 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 34 <script src="../../resources/js-test-pre.js"></script> |
| 35 <script src="../resources/webgl-test.js"> </script> |
| 36 <script src="../resources/webgl-test-utils.js"> </script> |
| 37 </head> |
| 38 <body> |
| 39 <canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></c
anvas> |
| 40 <div id="description"></div> |
| 41 <div id="console"></div> |
| 42 <script id="vshader" type="x-shader/x-vertex"> |
| 43 attribute vec4 vPosition; |
| 44 attribute vec2 texCoord0; |
| 45 varying vec2 texCoord; |
| 46 void main() |
| 47 { |
| 48 gl_Position = vPosition; |
| 49 texCoord = texCoord0; |
| 50 } |
| 51 </script> |
| 52 |
| 53 <script id="fshader" type="x-shader/x-fragment"> |
| 54 precision mediump float; |
| 55 uniform samplerCube tex; |
| 56 varying vec2 texCoord; |
| 57 void main() |
| 58 { |
| 59 gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1))); |
| 60 } |
| 61 </script> |
| 62 <script> |
| 63 "use strict"; |
| 64 description(document.title); |
| 65 var wtu = WebGLTestUtils; |
| 66 var gl = wtu.create3DContext("example"); |
| 67 var program = wtu.setupTexturedQuad(gl); |
| 68 |
| 69 function shouldBePowerOfTwo(n, name) { |
| 70 var power = Math.round(Math.log(n) / Math.log(2)); |
| 71 if (Math.pow(2, power) == n) { |
| 72 testPassed(name + ' is a power of two.'); |
| 73 } else { |
| 74 testFailed(name + ' should be a power of two, but was ' + n); |
| 75 } |
| 76 } |
| 77 |
| 78 // Note: It seems like a reasonable assuption that a 1xN texture size should |
| 79 // work. Even 1 by 128k is only 512k |
| 80 var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); |
| 81 debug("advertised max size: " + maxSize); |
| 82 debug("verifying max size is power-of-two (implied by GLES 2.0 section 3.7.1)"); |
| 83 shouldBePowerOfTwo(maxSize, 'Max size'); |
| 84 var testSize = Math.min(maxSize, 128 * 1024); |
| 85 var pixels = new Uint8Array(testSize * 4); |
| 86 for (var ii = 0; ii < testSize; ++ii) { |
| 87 var off = ii * 4; |
| 88 pixels[off + 0] = 0; |
| 89 pixels[off + 1] = 255; |
| 90 pixels[off + 2] = 128; |
| 91 pixels[off + 3] = 255; |
| 92 } |
| 93 var tex = gl.createTexture(); |
| 94 gl.bindTexture(gl.TEXTURE_2D, tex); |
| 95 |
| 96 debug("test " + testSize + "x1"); |
| 97 gl.texImage2D( |
| 98 gl.TEXTURE_2D, 0, gl.RGBA, testSize, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, |
| 99 pixels); |
| 100 gl.generateMipmap(gl.TEXTURE_2D); |
| 101 |
| 102 wtu.clearAndDrawUnitQuad(gl); |
| 103 wtu.checkCanvas(gl, [0, 255, 128, 255], |
| 104 "Should be 0, 255, 128, 255"); |
| 105 debug("test 1x" + testSize); |
| 106 gl.texImage2D( |
| 107 gl.TEXTURE_2D, 0, gl.RGBA, 1, testSize, 0, gl.RGBA, gl.UNSIGNED_BYTE, |
| 108 pixels); |
| 109 gl.generateMipmap(gl.TEXTURE_2D); |
| 110 |
| 111 wtu.clearAndDrawUnitQuad(gl); |
| 112 wtu.checkCanvas(gl, [0, 255, 128, 255], |
| 113 "Should be 0, 255, 128, 255"); |
| 114 |
| 115 var program = wtu.setupProgram( |
| 116 gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]); |
| 117 |
| 118 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors."); |
| 119 |
| 120 // NOTE: We can't easily test cube maps because they require width == height |
| 121 // and we might not have enough memory for maxSize by maxSize texture. |
| 122 |
| 123 var successfullyParsed = true; |
| 124 |
| 125 </script> |
| 126 <script src="../../resources/js-test-post.js"></script> |
| 127 |
| 128 </body> |
| 129 </html> |
| 130 |
| 131 |
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Chromium Code Reviews
Issue 41503006:
Add ToT WebGL conformance tests : part 8 (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/webgl/sdk/tests/