LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/renderbuffers/renderbuffer-initialization.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2012 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
 ** "Materials"), to deal in the Materials without restriction, including
 ** without limitation the rights to use, copy, modify, merge, publish,
 ** distribute, sublicense, and/or sell copies of the Materials, and to
 ** permit persons to whom the Materials are furnished to do so, subject to
 ** the following conditions:
 **
 ** The above copyright notice and this permission notice shall be included
 ** in all copies or substantial portions of the Materials.
 **
 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

 -->

 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test-utils.js"></script>
 </head>
 <body>
 <canvas id="testbed" width="400" height="400" style="width: 40px; height: 40px;"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 "use strict";
 var wtu = WebGLTestUtils;
 description('Verify renderbuffers are initialized to 0 before being read in WebGL');

 var gl = wtu.create3DContext("testbed");
 if (!gl) {
     testFailed('canvas.getContext() failed');
 } else {
     // Set the clear color to green. It should never show up.
     gl.clearColor(0, 1, 0, 1);

     runTest(gl, gl.canvas.width, gl.canvas.height, 0);
     runTest(gl, gl.canvas.width, gl.canvas.height, 1);
     runTest(gl, gl.canvas.width, gl.canvas.height, 0);
     runTest(gl, gl.canvas.width, gl.canvas.height, 1);

     // Testing buffer clearing won't change the clear values.
     var clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE);
     shouldBe("clearColor", "[0, 1, 0, 1]");
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors');
 }

 function runTest(gl, width, height, order)
 {
     wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],
                         "internal buffers have been initialized to 0");

     // fill the back buffer so we know that reading below happens from
     // the renderbuffer.
     gl.clear(gl.COLOR_BUFFER_BIT);

     var fbo = gl.createFramebuffer();
     gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
     var colorbuffer = gl.createRenderbuffer();
     gl.bindRenderbuffer(gl.RENDERBUFFER, colorbuffer);
     switch (order) {
       case 0:
         allocStorage(width, height);
         attachBuffer(colorbuffer);
         break;
       case 1:
         attachBuffer(colorbuffer);
         allocStorage(width, height);
         break;
     }

     function allocStorage(width, height) {
       gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, width, height);
       wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no error after renderbufferStorage(internalformat = RGBA4).');
     }

     function attachBuffer(colorbuffer) {
       gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, colorbuffer);
     }

     if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
         testFailed('Framebuffer incomplete.');
         return;
     }

     wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],
                         "user buffers have been initialized to 0");

     gl.deleteFramebuffer(fbo);
     gl.deleteRenderbuffer(colorbuffer);

     // this clear should not matter we are about to resize
     gl.clear(gl.COLOR_BUFFER_BIT);

     gl.canvas.width += 1;
     gl.canvas.height += 1;

     debug('');
 }

 var successfullyParsed = true;
 </script>
 <script src="../../resources/js-test-post.js"></script>
 </body>
 </html>
	<!--

	/*
	** Copyright (c) 2012 The Khronos Group Inc.
	**
	** Permission is hereby granted, free of charge, to any person obtaining a
	** copy of this software and/or associated documentation files (the
	** "Materials"), to deal in the Materials without restriction, including
	** without limitation the rights to use, copy, modify, merge, publish,
	** distribute, sublicense, and/or sell copies of the Materials, and to
	** permit persons to whom the Materials are furnished to do so, subject to
	** the following conditions:
	**
	** The above copyright notice and this permission notice shall be included
	** in all copies or substantial portions of the Materials.
	**
	** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
	*/

	-->

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/webgl-test-utils.js"></script>
	</head>
	<body>
	<canvas id="testbed" width="400" height="400" style="width: 40px; height: 40px;"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	"use strict";
	var wtu = WebGLTestUtils;
	description('Verify renderbuffers are initialized to 0 before being read in WebGL');

	var gl = wtu.create3DContext("testbed");
	if (!gl) {
	testFailed('canvas.getContext() failed');
	} else {
	// Set the clear color to green. It should never show up.
	gl.clearColor(0, 1, 0, 1);

	runTest(gl, gl.canvas.width, gl.canvas.height, 0);
	runTest(gl, gl.canvas.width, gl.canvas.height, 1);
	runTest(gl, gl.canvas.width, gl.canvas.height, 0);
	runTest(gl, gl.canvas.width, gl.canvas.height, 1);

	// Testing buffer clearing won't change the clear values.
	var clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE);
	shouldBe("clearColor", "[0, 1, 0, 1]");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors');
	}

	function runTest(gl, width, height, order)
	{
	wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],
	"internal buffers have been initialized to 0");

	// fill the back buffer so we know that reading below happens from
	// the renderbuffer.
	gl.clear(gl.COLOR_BUFFER_BIT);

	var fbo = gl.createFramebuffer();
	gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
	var colorbuffer = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, colorbuffer);
	switch (order) {
	case 0:
	allocStorage(width, height);
	attachBuffer(colorbuffer);
	break;
	case 1:
	attachBuffer(colorbuffer);
	allocStorage(width, height);
	break;
	}

	function allocStorage(width, height) {
	gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, width, height);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no error after renderbufferStorage(internalformat = RGBA4).');
	}

	function attachBuffer(colorbuffer) {
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, colorbuffer);
	}

	if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
	testFailed('Framebuffer incomplete.');
	return;
	}

	wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0],
	"user buffers have been initialized to 0");

	gl.deleteFramebuffer(fbo);
	gl.deleteRenderbuffer(colorbuffer);

	// this clear should not matter we are about to resize
	gl.clear(gl.COLOR_BUFFER_BIT);

	gl.canvas.width += 1;
	gl.canvas.height += 1;

	debug('');
	}

	var successfullyParsed = true;
	</script>
	<script src="../../resources/js-test-post.js"></script>
	</body>
	</html>