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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>gl-fragcoord Test</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="32" height="32"> |
| 18 </canvas> |
| 19 <div id="description"></div> |
| 20 <div id="console"></div> |
| 21 <script id="vshader" type="x-shader/x-vertex"> |
| 22 attribute vec4 vPosition; |
| 23 void main() |
| 24 { |
| 25 gl_Position = vPosition; |
| 26 } |
| 27 </script> |
| 28 |
| 29 <script id="fshader" type="x-shader/x-fragment"> |
| 30 precision mediump float; |
| 31 void main() |
| 32 { |
| 33 gl_FragColor = vec4( |
| 34 floor(gl_FragCoord.x * 4.0 / 32.0) / 4.0, |
| 35 floor(gl_FragCoord.y * 4.0 / 32.0) / 4.0, |
| 36 floor(gl_FragCoord.z * 4.0) / 4.0, |
| 37 1); |
| 38 } |
| 39 </script> |
| 40 |
| 41 <script> |
| 42 function init() |
| 43 { |
| 44 if (window.initNonKhronosFramework) { |
| 45 window.initNonKhronosFramework(false); |
| 46 } |
| 47 |
| 48 description("tests gl_FragCoord"); |
| 49 |
| 50 wtu = WebGLTestUtils; |
| 51 gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0,
1 ], 1); |
| 52 |
| 53 var vertexObject = gl.createBuffer(); |
| 54 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 55 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array( |
| 56 [-1, -1, -1, 1, -1, 0, -1, 1, 0, |
| 57 -1, 1, 0, 1, -1, 0, 1, 1, 1]), |
| 58 gl.STATIC_DRAW); |
| 59 gl.enableVertexAttribArray(0); |
| 60 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 61 |
| 62 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 63 gl.drawArrays(gl.TRIANGLES, 0, 6); |
| 64 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from draw"); |
| 65 |
| 66 for (var xx = 0; xx < 32; xx += 4) { |
| 67 for (var yy = 0; yy < 32; yy += 4) { |
| 68 var zz = (xx / 64) + (yy / 64); |
| 69 var color = [ |
| 70 Math.floor(Math.floor(xx * 4.0 / 32.0) / 4 * 256), |
| 71 Math.floor(Math.floor(yy * 4.0 / 32.0) / 4 * 256), |
| 72 Math.floor(Math.floor(zz * 4.0) / 4 * 256) |
| 73 ]; |
| 74 var msg = "should be " + color; |
| 75 wtu.checkCanvasRect( |
| 76 gl, xx, yy, 1, 1, color, msg, 4); |
| 77 } |
| 78 } |
| 79 } |
| 80 |
| 81 init(); |
| 82 successfullyParsed = true; |
| 83 </script> |
| 84 <script src="../../../resources/js-test-post.js"></script> |
| 85 |
| 86 </body> |
| 87 </html> |
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Chromium Code Reviews
Issue 9373009:
Check in webgl conformance tests r16844 from khronos. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/