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1 <!-- |
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2 Copyright (c) 2011 The Chromium Authors. All rights reserved. |
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3 Use of this source code is governed by a BSD-style license that can be |
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4 found in the LICENSE file. |
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5 --> |
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6 <!DOCTYPE html> |
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7 <html> |
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8 <head> |
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9 <meta charset="utf-8"> |
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10 <title>WebGL the minimum number of attributes are supported.</title> |
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11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
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12 <script src="../../resources/js-test-pre.js"></script> |
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13 <script src="../resources/webgl-test.js"> </script> |
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14 <script src="../resources/webgl-test-utils.js"> </script> |
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15 </head> |
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16 <body> |
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17 <canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas> |
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18 <div id="description"></div> |
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19 <div id="console"></div> |
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20 <script id="vshader" type="x-shader/x-vertex"> |
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21 attribute vec4 vPosition; |
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22 attribute vec4 v0; |
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23 attribute vec4 v1; |
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24 attribute vec4 v2; |
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25 attribute vec4 v3; |
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26 attribute vec4 v4; |
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27 attribute vec4 v5; |
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28 attribute vec4 v6; |
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29 varying vec4 color; |
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30 void main() |
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31 { |
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32 gl_Position = vPosition; |
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33 color = v0 + v1 + v2 + v3 + v4 + v5 + v6; |
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34 } |
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35 </script> |
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36 |
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37 <script id="fshader" type="x-shader/x-fragment"> |
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38 precision mediump float; |
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39 varying vec4 color; |
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40 void main() |
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41 { |
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42 gl_FragColor = color; |
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43 } |
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44 </script> |
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45 <script> |
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46 description(document.title); |
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47 var wtu = WebGLTestUtils; |
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48 var gl = wtu.create3DContext("example"); |
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49 var program = wtu.setupTexturedQuad(gl); |
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50 |
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51 var program = wtu.setupProgram( |
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52 gl, |
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53 ['vshader', 'fshader'], |
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54 ['vPosition', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5', 'v6'], |
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55 [0, 1, 2, 3, 4, 5, 6, 7]); |
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56 |
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57 for (var ii = 0; ii < 7; ++ii) { |
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58 var v = (ii + 1) / 28; |
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59 var vertexObject = gl.createBuffer(); |
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60 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
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61 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ |
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62 v, v/2, v/4, v/8, |
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63 v, v/2, v/4, v/8, |
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64 v, v/2, v/4, v/8, |
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65 v, v/2, v/4, v/8, |
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66 v, v/2, v/4, v/8, |
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67 v, v/2, v/4, v/8]), gl.STATIC_DRAW); |
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68 gl.enableVertexAttribArray(ii + 1); |
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69 gl.vertexAttribPointer(ii + 1, 4, gl.FLOAT, false, 0, 0); |
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70 } |
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71 |
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72 wtu.drawQuad(gl); |
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73 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); |
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74 wtu.checkCanvasRect(gl, 0, 0, gl.canvas.width, gl.canvas.height, [255, 127, 64, 32], "Should render 255,127,64,32 (+/-1)", 1); |
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75 |
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76 successfullyParsed = true; |
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77 |
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78 </script> |
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79 </body> |
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80 <script>finishTest();</script> |
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81 |
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82 </body> |
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83 </html> |
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84 |
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85 |