The Tor Browser: content/canvas/test/webgl-conformance/conformance/attribs/gl-enable-vertex-attrib.html@8bccb770b82d

     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>

    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>

    35 <script>

    36 description("tests that turning on attribs that have no buffer bound fails to draw");

    37 gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1);

    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);

    45 gl.enableVertexAttribArray(3);

    46 glErrorShouldBe(gl, gl.NO_ERROR);

    48 gl.drawArrays(gl.TRIANGLES, 0, 3);

    49 glErrorShouldBe(gl, gl.INVALID_OPERATION);

    51 successfullyParsed = true;

    52 </script>

    53 <script>finishTest();</script>

    55 </body>

    56 </html>

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