third_party/webgl/sdk/tests/conformance/textures/tex-sub-image-2d.html - Issue 10399113: Roll webgl conformance tests to r17874: part 2, adding r17874

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Issue 10399113: Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/

Patch Set: Created 8 years, 7 months ago

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	1 <!--

	2

	3 /*

	4 ** Copyright (c) 2012 The Khronos Group Inc.

	5 **

	6 ** Permission is hereby granted, free of charge, to any person obtaining a

	7 ** copy of this software and/or associated documentation files (the

	8 ** "Materials"), to deal in the Materials without restriction, including

	9 ** without limitation the rights to use, copy, modify, merge, publish,

	10 ** distribute, sublicense, and/or sell copies of the Materials, and to

	11 ** permit persons to whom the Materials are furnished to do so, subject to

	12 ** the following conditions:

	13 **

	14 ** The above copyright notice and this permission notice shall be included

	15 ** in all copies or substantial portions of the Materials.

	16 **

	17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

	18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

	19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

	20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

	21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

	22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

	23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

	24 */

	25

	26 -->

	27

	28 <!DOCTYPE html>

	29 <html>

	30 <head>

	31 <meta charset="utf-8">

	32 <link rel="stylesheet" href="../../resources/js-test-style.css"/>

	33 <script src="../../resources/js-test-pre.js"></script>

	34 <script src="../resources/webgl-test.js"></script>

	35 <script src="../resources/webgl-test-utils.js"></script>

	36 <script id="fshader" type="x-shader/x-fragment">

	37 precision mediump float;

	38

	39 uniform sampler2D tex;

	40 varying vec2 texCoord;

	41

	42 void main()

	43 {

	44 float intensity = texture2D(tex, texCoord).a;

	45 gl_FragColor = vec4(intensity, intensity, intensity, 1.0);

	46 }

	47 </script>

	48

	49 </head>

	50 <body>

	51 <canvas id="example" width="256px" height="1px"></canvas>

	52 <div id="description"></div>

	53 <div id="console"></div>

	54 <script>

	55 description('Tests texSubImage2D upload path from Uint8Array');

	56

	57 var wtu = WebGLTestUtils;

	58 var canvas = document.getElementById("example");

	59 var gl = wtu.create3DContext(canvas);

	60 gl.disable(gl.DITHER);

	61 var program = wtu.setupProgram(

	62 gl,

	63 [wtu.setupSimpleTextureVertexShader(gl), "fshader"],

	64 ['vPosition', 'texCoord0']);

	65 wtu.setupUnitQuad(gl);

	66 var textureWidth = 256;

	67 var textureHeight = 1;

	68

	69 textureLoc = gl.getUniformLocation(program, "tex");

	70

	71 var texture = gl.createTexture();

	72 gl.bindTexture(gl.TEXTURE_2D, texture);

	73 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);

	74 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);

	75 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

	76 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);

	77 // Allocate the texture object

	78 gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, textureWidth, textureHeight, 0, gl.ALP HA, gl.UNSIGNED_BYTE, null);

	79 // Prepare the image data

	80 var array = new Uint8Array(textureWidth);

	81 for (var i = 0; i < textureWidth; i++)

	82 array[i] = i;

	83 // Fill the texture object with data -- this is actually the code path being tes ted

	84 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.ALPHA, gl.UNSIGNED_BYTE, array);

	85

	86 // Clear and set up

	87 gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);

	88 gl.bindTexture(gl.TEXTURE_2D, texture);

	89 gl.useProgram(program);

	90 gl.uniform1i(textureLoc, 0);

	91 // Draw the texture to the frame buffer

	92 gl.drawArrays(gl.TRIANGLES, 0, 6);

	93

	94 // Read back the frame buffer

	95 var buf = new Uint8Array(textureWidth * textureHeight * 4);

	96 gl.readPixels(0, 0, textureWidth, textureHeight, gl.RGBA, gl.UNSIGNED_BYTE, buf) ;

	97

	98 // Verify the frame buffer's contents

	99 var passed = true;

	100 for (var i = 0; i < textureWidth; i++) {

	101 var val = i;

	102 if (buf[4 * i + 0] != val \|\|

	103 buf[4 * i + 1] != val \|\|

	104 buf[4 * i + 2] != val) {

	105 testFailed("pixel at (" + i + ", 0) was (" +

	106 buf[4 * i + 0] + ", " +

	107 buf[4 * i + 1] + ", " +

	108 buf[4 * i + 2] + "), should be (" +

	109 val + ", " + val + ", " + val + ")");

	110 passed = false;

	111 break;

	112 }

	113 }

	114

	115 if (passed)

	116 testPassed("");

	117

	118 successfullyParsed = true;

	119 </script>

	120 <script src="../../resources/js-test-post.js"></script>

	121 </body>

	122 </html>

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