content/canvas/test/webgl-conformance/conformance/misc/shader-precision-format.html@6474c204b198
content/canvas/test/webgl-conformance/conformance/misc/shader-precision-format.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!--
2 Copyright (c) 2011 Mozilla Foundation. 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 shader precision format 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 <script src="../resources/webgl-test-utils.js"> </script>
15 </head>
16 <body>
17 <canvas id="canvas" width="2" height="2" style="width: 40px; height: 40px;"></canvas>
18 <div id="description"></div>
19 <div id="console"></div>
20 <script>
21 var wtu = WebGLTestUtils;
22 description(document.title);
23 debug("Tests that WebGLShaderPrecisionFormat class and getShaderPrecisionFormat work.");
24 debug("");
25 var gl = wtu.create3DContext("canvas");
27 function verifyShaderPrecisionFormat(shadertype, precisiontype) {
28 shouldBeTrue('gl.getShaderPrecisionFormat(' + shadertype + ', ' +
29 precisiontype + ') instanceof WebGLShaderPrecisionFormat');
30 }
32 if (gl.getShaderPrecisionFormat == null || typeof gl.getShaderPrecisionFormat != 'function') {
33 debug("getShaderPrecisionFormat() function not found.");
34 } else {
35 debug("");
36 debug("Test that getShaderPrecisionFormat returns a WebGLShaderPrecisionFormat object.");
37 debug("");
39 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.LOW_FLOAT');
40 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.MEDIUM_FLOAT');
41 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.HIGH_FLOAT');
42 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.LOW_INT');
43 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.MEDIUM_INT');
44 verifyShaderPrecisionFormat('gl.VERTEX_SHADER', 'gl.HIGH_INT');
45 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.LOW_FLOAT');
46 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.MEDIUM_FLOAT');
47 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.HIGH_FLOAT');
48 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.LOW_INT');
49 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.MEDIUM_INT');
50 verifyShaderPrecisionFormat('gl.FRAGMENT_SHADER', 'gl.HIGH_INT');
52 debug("");
53 debug("Test that getShaderPrecisionFormat throws an error with invalid parameters.");
54 debug("");
56 shouldGenerateGLError(gl, gl.INVALID_ENUM, 'gl.getShaderPrecisionFormat(gl.HIGH_INT, gl.VERTEX_SHADER)');
58 debug("");
59 debug("Test that WebGLShaderPrecisionFormat values are sensible.");
60 debug("");
62 var shaderPrecisionFormat = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT);
63 shouldBeTrue('shaderPrecisionFormat.rangeMin >= 0 && shaderPrecisionFormat.rangeMin <= 128');
64 shouldBeTrue('shaderPrecisionFormat.rangeMax >= 0 && shaderPrecisionFormat.rangeMax <= 128');
65 shouldBeTrue('shaderPrecisionFormat.precision >= 0 && shaderPrecisionFormat.precision <= 128');
67 debug("");
68 debug("Test that getShaderPrecisionFormat returns the same thing every call.");
69 debug("");
71 var shaderPrecisionFormat2 = gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT);
72 shouldBeTrue('shaderPrecisionFormat.rangeMin == shaderPrecisionFormat2.rangeMin');
73 shouldBeTrue('shaderPrecisionFormat.rangeMax == shaderPrecisionFormat2.rangeMax');
74 shouldBeTrue('shaderPrecisionFormat.precision == shaderPrecisionFormat2.precision');
75 }
77 finishTest();
78 </script>
80 </body>
81 </html>
