LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/canvas/framebuffer-bindings-affected-by-to-data-url.html - WebKit - Git at Google

 <!--
 /*
 ** Copyright (c) 2015 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">
 <title>Verifies than GL framebuffer bindings do not change by toDataURL()</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../js/js-test-pre.js"></script>
 <script src="../../js/webgl-test-utils.js"></script>
 </head>
 <body>
 <canvas id="example" width="50" height="50"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 "use strict";
 description("Verifies than GL framebuffer bindings do not change by toDataURL()");

 var wtu = WebGLTestUtils;
 function test() {
   var glCanvas = document.getElementById("example");
   var gl = wtu.create3DContext(glCanvas, {preserveDrawingBuffer: true, premultipliedAlpha: true});

   var program = wtu.setupColorQuad(gl);

   // Clear backbuffer in red.
   gl.clearColor(1.0, 0.0, 0.0, 1.0);
   gl.clear(gl.COLOR_BUFFER_BIT);
   wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");

   var fbo = gl.createFramebuffer();
   var tex = gl.createTexture();
   gl.bindTexture(gl.TEXTURE_2D, tex);
   gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 50, 50, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
   gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
   gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
   if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
     return;
   }

   // Clear the FBO in green.
   gl.clearColor(0.0, 1.0, 0.0, 1.0);
   gl.clear(gl.COLOR_BUFFER_BIT);

   // backbuffer is still in red.
   gl.bindFramebuffer(gl.FRAMEBUFFER, null);
   wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");
   gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

   // toDataURL() calls must not bind backbuffer.
   glCanvas.toDataURL();
   // Calling twice caused a bug due to wrong cache impl; crbug.com/445848
   glCanvas.toDataURL();
   // It must applies to the FBO, not backbuffer.
   gl.clear(gl.COLOR_BUFFER_BIT);

   // backbuffer must be in red, not green.
   gl.bindFramebuffer(gl.FRAMEBUFFER, null);
   wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");
 }
 test();

 var successfullyParsed = true;
 </script>
 <script src="../../js/js-test-post.js"></script>
 </body>
 </html>
	<!--
	/*
	** Copyright (c) 2015 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">
	<title>Verifies than GL framebuffer bindings do not change by toDataURL()</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../js/js-test-pre.js"></script>
	<script src="../../js/webgl-test-utils.js"></script>
	</head>
	<body>
	<canvas id="example" width="50" height="50"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	"use strict";
	description("Verifies than GL framebuffer bindings do not change by toDataURL()");

	var wtu = WebGLTestUtils;
	function test() {
	var glCanvas = document.getElementById("example");
	var gl = wtu.create3DContext(glCanvas, {preserveDrawingBuffer: true, premultipliedAlpha: true});

	var program = wtu.setupColorQuad(gl);

	// Clear backbuffer in red.
	gl.clearColor(1.0, 0.0, 0.0, 1.0);
	gl.clear(gl.COLOR_BUFFER_BIT);
	wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");

	var fbo = gl.createFramebuffer();
	var tex = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex);
	gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 50, 50, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
	gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
	gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
	if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
	return;
	}

	// Clear the FBO in green.
	gl.clearColor(0.0, 1.0, 0.0, 1.0);
	gl.clear(gl.COLOR_BUFFER_BIT);

	// backbuffer is still in red.
	gl.bindFramebuffer(gl.FRAMEBUFFER, null);
	wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");
	gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

	// toDataURL() calls must not bind backbuffer.
	glCanvas.toDataURL();
	// Calling twice caused a bug due to wrong cache impl; crbug.com/445848
	glCanvas.toDataURL();
	// It must applies to the FBO, not backbuffer.
	gl.clear(gl.COLOR_BUFFER_BIT);

	// backbuffer must be in red, not green.
	gl.bindFramebuffer(gl.FRAMEBUFFER, null);
	wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");
	}
	test();

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