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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 minimum number of attributes are 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 vec4 v0; | |
23 attribute vec4 v1; | |
24 attribute vec4 v2; | |
25 attribute vec4 v3; | |
26 attribute vec4 v4; | |
27 attribute vec4 v5; | |
28 attribute vec4 v6; | |
29 varying vec4 color; | |
30 void main() | |
31 { | |
32 gl_Position = vPosition; | |
33 color = v0 + v1 + v2 + v3 + v4 + v5 + v6; | |
34 } | |
35 </script> | |
36 | |
37 <script id="fshader" type="x-shader/x-fragment"> | |
38 precision mediump float; | |
39 varying vec4 color; | |
40 void main() | |
41 { | |
42 gl_FragColor = color; | |
43 } | |
44 </script> | |
45 <script> | |
46 var wtu = WebGLTestUtils; | |
47 var canvas = document.getElementById("example"); | |
48 var gl = wtu.create3DContext(canvas); | |
49 var program = wtu.setupTexturedQuad(gl); | |
50 | |
51 var program = wtu.setupProgram( | |
52 gl, | |
53 [wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER), | |
54 wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER)], | |
55 ['vPosition', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5', 'v6'], | |
56 [0, 1, 2, 3, 4, 5, 6, 7]); | |
57 | |
58 for (var ii = 0; ii < 7; ++ii) { | |
59 var v = (ii + 1) / 28; | |
60 var vertexObject = gl.createBuffer(); | |
61 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); | |
62 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
63 v, v/2, v/4, v/8, | |
64 v, v/2, v/4, v/8, | |
65 v, v/2, v/4, v/8, | |
66 v, v/2, v/4, v/8, | |
67 v, v/2, v/4, v/8, | |
68 v, v/2, v/4, v/8]), gl.STATIC_DRAW); | |
69 gl.enableVertexAttribArray(ii + 1); | |
70 gl.vertexAttribPointer(ii + 1, 4, gl.FLOAT, false, 0, 0); | |
71 } | |
72 | |
73 wtu.drawQuad(gl); | |
74 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); | |
75 wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, [255, 127, 64, 32], "
Should render 255,127,64,32 (+/-1)", 1); | |
76 | |
77 successfullyParsed = true; | |
78 | |
79 </script> | |
80 </body> | |
81 <script src="../../resources/js-test-post.js"></script> | |
82 | |
83 </body> | |
84 </html> | |
85 | |
86 | |
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