third_party/webgl/sdk/tests/conformance/renderbuffers/renderbuffer-initialization.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 </head>

	37 <body>

	38 <canvas id="testbed" width="400" height="400" style="width: 40px; height: 40px;" ></canvas>

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

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

	41 <script>

	42 var wtu = WebGLTestUtils;

	43 description('Verify renderbuffers are initialized to 0 before being read in WebG L');

	44

	45 var gl = wtu.create3DContext("testbed");

	46 if (!gl) {

	47 testFailed('canvas.getContext() failed');

	48 } else {

	49 // Set the clear color to green. It should never show up.

	50 gl.clearColor(0, 1, 0, 1);

	51

	52 runTest(gl, gl.canvas.width, gl.canvas.height, 0);

	53 runTest(gl, gl.canvas.width, gl.canvas.height, 1);

	54 runTest(gl, gl.canvas.width, gl.canvas.height, 0);

	55 runTest(gl, gl.canvas.width, gl.canvas.height, 1);

	56

	57 // Testing buffer clearing won't change the clear values.

	58 var clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE);

	59 shouldBe("clearColor", "[0, 1, 0, 1]");

	60 glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors');

	61 }

	62

	63 function runTest(gl, width, height, order)

	64 {

	65 wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],

	66 "internal buffers have been initialized to 0");

	67

	68 // fill the back buffer so we know that reading below happens from

	69 // the renderbuffer.

	70 gl.clear(gl.COLOR_BUFFER_BIT);

	71

	72 var fbo = gl.createFramebuffer();

	73 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

	74 var colorbuffer = gl.createRenderbuffer();

	75 gl.bindRenderbuffer(gl.RENDERBUFFER, colorbuffer);

	76 switch (order) {

	77 case 0:

	78 allocStorage(width, height);

	79 attachBuffer(colorbuffer);

	80 break;

	81 case 1:

	82 attachBuffer(colorbuffer);

	83 allocStorage(width, height);

	84 break;

	85 }

	86

	87 function allocStorage(width, height) {

	88 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, width, height);

	89 glErrorShouldBe(gl, gl.NO_ERROR, 'should be no error after renderbufferSto rage(internalformat = RGBA4).');

	90 }

	91

	92 function attachBuffer(colorbuffer) {

	93 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDER BUFFER, colorbuffer);

	94 }

	95

	96 if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {

	97 testFailed('Framebuffer incomplete.');

	98 return;

	99 }

	100

	101 wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],

	102 "user buffers have been initialized to 0");

	103

	104 gl.deleteFramebuffer(fbo);

	105 gl.deleteRenderbuffer(colorbuffer);

	106

	107 // this clear should not matter we are about to resize

	108 gl.clear(gl.COLOR_BUFFER_BIT);

	109

	110 gl.canvas.width += 1;

	111 gl.canvas.height += 1;

	112

	113 debug('');

	114 }

	115

	116 successfullyParsed = true;

	117 </script>

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

	119 </body>

	120 </html>

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