content/canvas/test/webgl-conformance/conformance/limits/gl-min-textures.html@8bccb770b82d
content/canvas/test/webgl-conformance/conformance/limits/gl-min-textures.html
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
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 uniforms 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;"></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 #define NUM_TEXTURES 8 // See spec
30 precision mediump float;
31 uniform sampler2D uni[NUM_TEXTURES];
32 void main()
33 {
34 vec4 c = vec4(0,0,0,0);
35 for (int ii = 0; ii < NUM_TEXTURES; ++ii) {
36 c += texture2D(uni[ii], vec2(0.5, 0.5));
37 }
38 gl_FragColor = c;
39 }
40 </script>
41 <script>
42 description(document.title);
43 var wtu = WebGLTestUtils;
44 var gl = wtu.create3DContext("example");
45 var program = wtu.setupTexturedQuad(gl);
47 //------------------------------------------------------------------------------
48 var program = wtu.setupProgram(
49 gl, ['vshader', 'fshader'], ['vPosition'], [0]);
51 for (var ii = 0; ii < 8; ++ii) {
52 var loc = gl.getUniformLocation(program, "uni[" + ii + "]");
53 gl.activeTexture(gl.TEXTURE0 + ii);
54 var tex = gl.createTexture();
55 wtu.fillTexture(gl, tex, 1, 1, [32, 16, 8, ii * 9], 0);
56 gl.uniform1i(loc, ii);
57 }
59 wtu.drawQuad(gl);
60 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
61 wtu.checkCanvas(gl, [255, 128, 64, 252],
62 "Should render using all texture units", 1);
64 successfullyParsed = true;
66 </script>
67 <script>finishTest();</script>
69 </body>
70 </html>
