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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 minimum number of attributes are 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 vec4 v0; |
| 45 attribute vec4 v1; |
| 46 attribute vec4 v2; |
| 47 attribute vec4 v3; |
| 48 attribute vec4 v4; |
| 49 attribute vec4 v5; |
| 50 attribute vec4 v6; |
| 51 varying vec4 color; |
| 52 void main() |
| 53 { |
| 54 gl_Position = vPosition; |
| 55 color = v0 + v1 + v2 + v3 + v4 + v5 + v6; |
| 56 } |
| 57 </script> |
| 58 |
| 59 <script id="fshader" type="x-shader/x-fragment"> |
| 60 precision mediump float; |
| 61 varying vec4 color; |
| 62 void main() |
| 63 { |
| 64 gl_FragColor = color; |
| 65 } |
| 66 </script> |
| 67 <script> |
| 68 "use strict"; |
| 69 description(document.title); |
| 70 var wtu = WebGLTestUtils; |
| 71 var gl = wtu.create3DContext("example"); |
| 72 var program = wtu.setupTexturedQuad(gl); |
| 73 |
| 74 var program = wtu.setupProgram( |
| 75 gl, |
| 76 ['vshader', 'fshader'], |
| 77 ['vPosition', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5', 'v6'], |
| 78 [0, 1, 2, 3, 4, 5, 6, 7]); |
| 79 |
| 80 for (var ii = 0; ii < 7; ++ii) { |
| 81 var v = (ii + 1) / 28; |
| 82 var vertexObject = gl.createBuffer(); |
| 83 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 84 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ |
| 85 v, v/2, v/4, v/8, |
| 86 v, v/2, v/4, v/8, |
| 87 v, v/2, v/4, v/8, |
| 88 v, v/2, v/4, v/8, |
| 89 v, v/2, v/4, v/8, |
| 90 v, v/2, v/4, v/8]), gl.STATIC_DRAW); |
| 91 gl.enableVertexAttribArray(ii + 1); |
| 92 gl.vertexAttribPointer(ii + 1, 4, gl.FLOAT, false, 0, 0); |
| 93 } |
| 94 |
| 95 wtu.clearAndDrawUnitQuad(gl); |
| 96 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); |
| 97 wtu.checkCanvasRect(gl, 0, 0, gl.canvas.width, gl.canvas.height, [255, 127, 64,
32], "Should render 255,127,64,32 (+/-1)", 1); |
| 98 |
| 99 var successfullyParsed = true; |
| 100 |
| 101 </script> |
| 102 </body> |
| 103 <script src="../../resources/js-test-post.js"></script> |
| 104 |
| 105 </body> |
| 106 </html> |
| 107 |
| 108 |
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