content/canvas/test/webgl-conformance/conformance/glsl/misc/glsl-function-nodes.html@deefc01c0e14
content/canvas/test/webgl-conformance/conformance/glsl/misc/glsl-function-nodes.html
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
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>GLSL function nodes Test</title>
11 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
12 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
13 <script src="../../../resources/js-test-pre.js"></script>
14 <script src="../../resources/webgl-test.js"> </script>
15 <script src="../../resources/webgl-test-utils.js"> </script>
17 <script id="vshaderFunction", type="x-shader/x-vertex">
18 attribute vec4 aPosition;
19 varying vec4 vColor;
21 float sign_emu(float value) {
22 if (value == 0.0) return 0.0;
23 return value > 0.0 ? 1.0 : -1.0;
24 }
26 void main()
27 {
28 gl_Position = aPosition;
29 vec2 texcoord = vec2(aPosition.xy * 0.5 + vec2(0.5, 0.5));
30 vec4 color = vec4(
31 texcoord,
32 texcoord.x * texcoord.y,
33 (1.0 - texcoord.x) * texcoord.y * 0.5 + 0.5);
34 vColor = vec4(
35 sign_emu(color.x * 2.0 - 1.0) * 0.5 + 0.5,
36 sign_emu(color.y * 2.0 - 1.0) * 0.5 + 0.5,
37 0,
38 1);
39 }
40 </script>
42 <script id="vshaderMacro", type="x-shader/x-vertex">
43 attribute vec4 aPosition;
44 varying vec4 vColor;
46 #define sign_emu(value) ((value) == 0.0 ? 0.0 : ((value) > 0.0 ? 1.0 : -1.0))
48 void main()
49 {
50 gl_Position = aPosition;
51 vec2 texcoord = vec2(aPosition.xy * 0.5 + vec2(0.5, 0.5));
52 vec4 color = vec4(
53 texcoord,
54 texcoord.x * texcoord.y,
55 (1.0 - texcoord.x) * texcoord.y * 0.5 + 0.5);
56 vColor = vec4(
57 sign_emu(color.x * 2.0 - 1.0) * 0.5 + 0.5,
58 sign_emu(color.y * 2.0 - 1.0) * 0.5 + 0.5,
59 0,
60 1);
61 }
62 </script>
64 <script id="fshader", type="x-shader/x-fragment">
65 #if defined(GL_ES)
66 precision mediump float;
67 #endif
68 varying vec4 vColor;
69 void main()
70 {
71 gl_FragColor = vColor;
72 }
73 </script>
74 </head>
75 <body>
76 <canvas id="canvasFunction" width="50" height="50"></canvas>
77 <canvas id="canvasMacro" width="50" height="50"></canvas>
78 <div id="description">This tests against a Mac driver bug related to function calls.</div>
79 <div id="console"></div>
80 <script>
81 var width = 50;
82 var height = 50;
84 function drawAndRead(canvasID, vshaderID, buffer)
85 {
86 var gl = initWebGL(canvasID, vshaderID, "fshader", ["aPosition"], [0, 0, 0, 1], 1);
87 var vertexObject = gl.createBuffer();
88 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
89 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
90 gl.enableVertexAttribArray(0);
91 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
93 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
94 gl.drawArrays(gl.TRIANGLES, 0, 3);
95 gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buffer);
96 if (gl.getError() != gl.NO_ERROR)
97 return false;
98 return true;
99 }
101 function compareRendering(buffer1, buffer2, tol)
102 {
103 for (var i = 0; i < width * height * 4; ++i) {
104 if (Math.abs(buffer1[i] - buffer2[i]) > tol)
105 return false;
106 }
107 return true;
108 }
110 function init()
111 {
112 if (window.initNonKhronosFramework) {
113 window.initNonKhronosFramework(false);
114 }
116 description("tests function nodes");
118 var bufFunction = new Uint8Array(width * height * 4);
119 var bufMacro = new Uint8Array(width * height * 4);
121 if (drawAndRead("canvasFunction", "vshaderFunction", bufFunction) == false ||
122 drawAndRead("canvasMacro", "vshaderMacro", bufMacro) == false) {
123 testFailed("Setup failed");
124 } else {
125 if (compareRendering(bufFunction, bufMacro, 4) == false)
126 testFailedRender("Rendering results are different", bufMacro,
127 bufFunction, width, height);
128 else
129 testPassed("Rendering results are the same");
130 }
131 }
133 init();
134 successfullyParsed = true;
135 </script>
136 <script>finishTest();</script>
137 </body>
138 </html>
