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Issue 10441002: Merge 117918 - Must set/reset pixel unpack alignment to 1 during texSubImage2D (Closed) Base URL: http://svn.webkit.org/repository/webkit/branches/chromium/1132/
Patch Set: Created 8 years, 7 months ago
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1 <!DOCTYPE html>
1 <html> 2 <html>
2 <head> 3 <head>
4 <meta charset="utf-8">
5 <link rel="stylesheet" href="../../js/resources/js-test-style.css"/>
3 <script src="../../js/resources/js-test-pre.js"></script> 6 <script src="../../js/resources/js-test-pre.js"></script>
4 <script src="resources/webgl-test.js"></script> 7 <script src="resources/webgl-test.js"></script>
5 <script src="resources/webgl-test-utils.js"></script> 8 <script src="resources/webgl-test-utils.js"></script>
9 <script src="resources/tex-image-and-sub-image-2d-with-image-data.js"></script>
6 <script> 10 <script>
7 var wtu = WebGLTestUtils; 11 function testPrologue(gl) {
8 var gl = null; 12 return true;
9 var textureLoc = null;
10 var imageData = null;
11
12 function init()
13 {
14 if (window.initNonKhronosFramework) {
15 window.initNonKhronosFramework(true);
16 }
17
18 description('Verify texImage2D and texSubImage2D code paths taking ImageData ');
19
20 var canvas2d = document.getElementById("texcanvas");
21 var context2d = canvas2d.getContext("2d");
22 imageData = context2d.createImageData(1, 2);
23 var data = imageData.data;
24 data[0] = 255;
25 data[1] = 0;
26 data[2] = 0;
27 data[3] = 255;
28 data[4] = 0;
29 data[5] = 255;
30 data[6] = 0;
31 data[7] = 0;
32
33 wtu = WebGLTestUtils;
34 var canvas = document.getElementById("example");
35 gl = wtu.create3DContext(canvas);
36 var program = wtu.setupTexturedQuad(gl);
37 gl.clearColor(0,0,0,1);
38 gl.clearDepth(1);
39 gl.disable(gl.BLEND);
40
41 textureLoc = gl.getUniformLocation(program, "tex");
42
43 runTest();
44 }
45
46 // These two declarations need to be global for "shouldBe" to see them
47 var buf = null;
48 var idx = 0;
49 var pixel = [0, 0, 0, 1];
50 var correctColor = null;
51
52 function runOneIteration(useTexSubImage2D, flipY, premultiplyAlpha, topColor, bo ttomColor)
53 {
54 debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
55 ' with flipY=' + flipY + ' and premultiplyAlpha=' + premultiplyAlpha);
56 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
57 // Enable writes to the RGBA channels
58 gl.colorMask(1, 1, 1, 0);
59 var texture = gl.createTexture();
60 // Bind the texture to texture unit 0
61 gl.bindTexture(gl.TEXTURE_2D, texture);
62 // Set up texture parameters
63 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
64 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
65 // Set up pixel store parameters
66 gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
67 gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha);
68 // Upload the image into the texture
69 if (useTexSubImage2D) {
70 // Initialize the texture to black first
71 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 2, 0,
72 gl.RGBA, gl.UNSIGNED_BYTE, null);
73 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, imag eData);
74 } else {
75 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, imag eData);
76 }
77
78 // Point the uniform sampler to texture unit 0
79 gl.uniform1i(textureLoc, 0);
80 // Draw the triangles
81 wtu.drawQuad(gl, [0, 0, 0, 255]);
82
83 // Read back the rendering results
84 buf = new Uint8Array(1 * 2 * 4);
85 gl.readPixels(0, 0, 1, 2, gl.RGBA, gl.UNSIGNED_BYTE, buf);
86 // Check the top pixel and bottom pixel and make sure they have
87 // the right color.
88 debug("Checking bottom pixel");
89 wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe " + bottomColor);
90 debug("Checking top pixel");
91 wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe " + topColor);
92 }
93
94 function runTest()
95 {
96 var red = [255, 0, 0, 255];
97 var green = [0, 255, 0, 255];
98 var redPremultiplyAlpha = [255, 0, 0, 255];
99 var greenPremultiplyAlpha = [0, 0, 0, 255];
100
101 runOneIteration(false, true, false,
102 red, green);
103 runOneIteration(false, false, false,
104 green, red);
105 runOneIteration(false, true, true,
106 redPremultiplyAlpha, greenPremultiplyAlpha);
107 runOneIteration(false, false, true,
108 greenPremultiplyAlpha, redPremultiplyAlpha);
109 runOneIteration(true, true, false,
110 red, green);
111 runOneIteration(true, false, false,
112 green, red);
113 runOneIteration(true, true, true,
114 redPremultiplyAlpha, greenPremultiplyAlpha);
115 runOneIteration(true, false, true,
116 greenPremultiplyAlpha, redPremultiplyAlpha);
117 var epilogue = document.createElement("script");
118 epilogue.onload = finish;
119 epilogue.src = "../../js/resources/js-test-post.js";
120 document.body.appendChild(epilogue);
121 }
122
123 function finish() {
124 if (window.nonKhronosFrameworkNotifyDone) {
125 window.nonKhronosFrameworkNotifyDone();
126 }
127 } 13 }
128 </script> 14 </script>
129 </head> 15 </head>
130 <body onload="init()"> 16 <body onload='generateTest("RGBA", "UNSIGNED_BYTE", testPrologue)()'>
131 <canvas id="texcanvas" width="1px" height="2px"></canvas> 17 <canvas id="texcanvas" width="1px" height="2px"></canvas>
132 <canvas id="example" width="1px" height="2px"></canvas> 18 <canvas id="example" width="1px" height="2px"></canvas>
133 <div id="description"></div> 19 <div id="description"></div>
134 <div id="console"></div> 20 <div id="console"></div>
135 </body> 21 </body>
136 </html> 22 </html>
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