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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 Enable Vertex Attrib 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 </head> |
| 15 <body> |
| 16 <canvas id="example" width="50" height="50"> |
| 17 </canvas> |
| 18 <div id="description"></div> |
| 19 <div id="console"></div> |
| 20 <script id="vshader" type="x-shader/x-vertex"> |
| 21 attribute vec4 vPosition; |
| 22 void main() |
| 23 { |
| 24 gl_Position = vPosition; |
| 25 } |
| 26 </script> |
| 27 |
| 28 <script id="fshader" type="x-shader/x-fragment"> |
| 29 void main() |
| 30 { |
| 31 gl_FragColor = vec4(1.0,0.0,0.0,1.0); |
| 32 } |
| 33 </script> |
| 34 |
| 35 <script> |
| 36 gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ],
1); |
| 37 gl.viewport(0, 0, 50, 50); |
| 38 |
| 39 var vertexObject = gl.createBuffer(); |
| 40 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 41 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5
,0 ]), gl.STATIC_DRAW); |
| 42 gl.enableVertexAttribArray(0); |
| 43 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 44 |
| 45 gl.enableVertexAttribArray(3); |
| 46 glErrorShouldBe(gl, gl.NO_ERROR); |
| 47 |
| 48 gl.drawArrays(gl.TRIANGLES, 0, 3); |
| 49 glErrorShouldBe(gl, gl.INVALID_OPERATION); |
| 50 |
| 51 successfullyParsed = true; |
| 52 </script> |
| 53 <script src="../../resources/js-test-post.js"></script> |
| 54 |
| 55 </body> |
| 56 </html> |
| 57 |
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