content/canvas/test/webgl-conformance/conformance/textures/tex-image-and-sub-image-2d-with-array-buffer-view.html@6474c204b198
content/canvas/test/webgl-conformance/conformance/textures/tex-image-and-sub-image-2d-with-array-buffer-view.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 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 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
11 <script src="../../resources/js-test-pre.js"></script>
12 <script src="../resources/webgl-test.js"></script>
13 <script src="../resources/webgl-test-utils.js"></script>
14 </head>
15 <body>
16 <canvas id="example" width="1px" height="2px"></canvas>
17 <div id="description"></div>
18 <div id="console"></div>
19 <script>
20 description('Verifies texImage2D and texSubImage2D code paths taking ArrayBufferView');
22 var wtu = WebGLTestUtils;
23 var gl = null;
24 var textureLoc = null;
25 var successfullyParsed = false;
27 // These two declarations need to be global for "shouldBe" to see them
28 var buf = null;
29 var idx = 0;
30 var pixel = [0, 0, 0, 1];
31 var correctColor = null;
33 function generateRGBAData(type, unpackAlignment)
34 {
35 var sourceData = [ 255, 0, 0, 255,
36 0, 255, 0, 0 ];
37 switch (type) {
38 case gl.UNSIGNED_BYTE: {
39 var rowWidth = Math.max(unpackAlignment, 4);
40 var data = new Uint8Array(2 * rowWidth);
41 for (var y = 0; y < 2; ++y) {
42 var index = y * rowWidth;
43 for (var element = 0; element < 4; ++element) {
44 data[index + element] = sourceData[4 * y + element];
45 }
46 }
47 return data;
48 }
49 case gl.UNSIGNED_SHORT_4_4_4_4: {
50 var rowWidth = Math.max(unpackAlignment, 2) / 2;
51 var data = new Uint16Array(2 * rowWidth);
52 for (var y = 0; y < 2; ++y) {
53 var index = y * rowWidth;
54 data[index] = (((sourceData[4 * y] & 0xF0) << 8)
55 | ((sourceData[4 * y + 1] & 0xF0) << 4)
56 | (sourceData[4 * y + 2] & 0xF0)
57 | (sourceData[4 * y + 3] >> 4));
58 }
59 return data;
60 }
61 case gl.UNSIGNED_SHORT_5_5_5_1: {
62 var rowWidth = Math.max(unpackAlignment, 2) / 2;
63 var data = new Uint16Array(2 * rowWidth);
64 for (var y = 0; y < 2; ++y) {
65 var index = y * rowWidth;
66 data[index] = (((sourceData[4 * y] & 0xF8) << 8)
67 | ((sourceData[4 * y + 1] & 0xF8) << 3)
68 | ((sourceData[4 * y + 2] & 0xF8) >> 2)
69 | (sourceData[4 * y + 3] >> 7));
70 }
71 return data;
72 }
73 }
74 }
76 function typeToString(type)
77 {
78 switch (type) {
79 case gl.UNSIGNED_BYTE: return 'UNSIGNED_BYTE';
80 case gl.UNSIGNED_SHORT_5_5_5_1: return 'UNSIGNED_SHORT_5_5_5_1';
81 case gl.UNSIGNED_SHORT_4_4_4_4: return 'UNSIGNED_SHORT_4_4_4_4';
82 }
83 return 'Unknown type ' + type;
84 }
86 function runOneIteration(useTexSubImage2D, type, unpackAlignment, flipY, premultiplyAlpha, topColor, bottomColor)
87 {
88 debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
89 ' with type=' + typeToString(type) +
90 ', unpackAlignment=' + unpackAlignment +
91 ', flipY=' + flipY + ', premultiplyAlpha=' + premultiplyAlpha);
92 gl.colorMask(true, true, true, true);
93 gl.clearColor(0, 0, 0, 1.0);
94 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
95 // Enable writes to the RGB channels
96 gl.colorMask(true, true, true, false);
97 var texture = gl.createTexture();
98 // Bind the texture to texture unit 0
99 gl.bindTexture(gl.TEXTURE_2D, texture);
100 // Set up texture parameters
101 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
102 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
103 // Set up pixel store parameters
104 gl.pixelStorei(gl.UNPACK_ALIGNMENT, unpackAlignment);
105 gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
106 gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
107 // Generate the data
108 var data = generateRGBAData(type, unpackAlignment);
109 if (gl.getError() != gl.NO_ERROR)
110 testFailed("GL error before texture upload");
111 // Upload the image into the texture
112 if (useTexSubImage2D) {
113 // Initialize the texture to black first
114 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0,
115 gl.RGBA, type, null);
116 if (gl.getError() != gl.NO_ERROR)
117 testFailed("GL error after texImage2D(null)");
118 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 2, gl.RGBA, type, data);
119 if (gl.getError() != gl.NO_ERROR)
120 testFailed("GL error after texSubImage2D");
121 } else {
122 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0, gl.RGBA, type, data);
123 if (gl.getError() != gl.NO_ERROR)
124 testFailed("GL error after texImage2D");
125 }
127 // Point the uniform sampler to texture unit 0
128 gl.uniform1i(textureLoc, 0);
129 // Draw the triangles
130 wtu.drawQuad(gl, [0, 0, 0, 255]);
132 // Read back the rendering results
133 buf = new Uint8Array(1 * 2 * 4);
134 gl.readPixels(0, 0, 1, 2, gl.RGBA, gl.UNSIGNED_BYTE, buf);
135 // Check the top pixel and bottom pixel and make sure they have
136 // the right color.
137 debug("Checking bottom pixel");
138 wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe " + bottomColor);
139 debug("Checking top pixel");
140 wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe " + topColor);
141 }
143 function runTest()
144 {
145 var red = [255, 0, 0, 255];
146 var green = [0, 255, 0, 255];
147 var redPremultiplyAlpha = [255, 0, 0, 255];
148 var greenPremultiplyAlpha = [0, 0, 0, 255];
150 var types = [ gl.UNSIGNED_BYTE, gl.UNSIGNED_SHORT_5_5_5_1, gl.UNSIGNED_SHORT_4_4_4_4 ];
151 var unpackAlignments = [ 1, 2, 4, 8 ];
153 for (var i = 0; i < types.length; ++i) {
154 var type = types[i];
155 for (var j = 0; j < unpackAlignments.length; ++j) {
156 var unpackAlignment = unpackAlignments[j];
157 runOneIteration(false, type, unpackAlignment, true, false,
158 red, green);
159 runOneIteration(false, type, unpackAlignment, false, false,
160 green, red);
161 runOneIteration(false, type, unpackAlignment, true, true,
162 redPremultiplyAlpha, greenPremultiplyAlpha);
163 runOneIteration(false, type, unpackAlignment, false, true,
164 greenPremultiplyAlpha, redPremultiplyAlpha);
165 runOneIteration(true, type, unpackAlignment, true, false,
166 red, green);
167 runOneIteration(true, type, unpackAlignment, false, false,
168 green, red);
169 runOneIteration(true, type, unpackAlignment, true, true,
170 redPremultiplyAlpha, greenPremultiplyAlpha);
171 runOneIteration(true, type, unpackAlignment, false, true,
172 greenPremultiplyAlpha, redPremultiplyAlpha);
173 }
174 }
176 }
178 gl = wtu.create3DContext("example");
179 var program = wtu.setupTexturedQuad(gl);
180 gl.disable(gl.BLEND);
182 gl.clearColor(0,0,0,1);
183 gl.clearDepth(1);
185 textureLoc = gl.getUniformLocation(program, "tex");
187 runTest();
188 glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
189 successfullyParsed = true;
190 </script>
191 <script>finishTest();</script>
192 </body>
193 </html>
