LayoutTests/webgl/1.0.1/resources/webgl_test_files/extra/canvas-compositing-test.html - WebKit - Git at Google

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 <!DOCTYPE html>
 <html>
   <head>
 <meta charset="utf-8">
     <title>Canvas Compositing Test</title>
     <link rel="stylesheet" href="../resources/js-test-style.css"/>
     <script src="../resources/js-test-pre.js"></script>
     <script src="../conformance/resources/webgl-test.js"> </script>
 </head>
 <body>
 Below are 2 50x50 pixel canvas but using CSS to display them at 100x100 pixels. <br/>
 They are solid black with a red triangle<br/>
 They each have a 10px CSS solid black border around them.<br/>
 Depending on how the browser composites the canvas with the page  they will get
 a white outline<hr/>
 <div>
 2d canvas<br/>
 <canvas id="example2" width="50" height="50" style="width: 100px; height: 100px; border: 10px solid black;"></canvas>
 </div>
 <hr/>
 3d canvas<br/>
 <div>
 <canvas id="example" width="50" height="50" style="width: 100px; height: 100px; border: 10px solid black;"></canvas>
 </div>
 <hr/>
 img tag<br/>
 <img src="50x50pixel-black-with-red-triangle.png" style="width: 100px; height: 100px; border: 10px solid black;"/>
 <div id="description"></div>
 <div id="console"></div>
     <script id="vshader" type="x-shader/x-vertex">
         attribute vec4 vPosition;
         void main()
         {
             gl_Position = vPosition;
         }
     </script>

     <script id="fshader" type="x-shader/x-fragment">
         void main()
         {
             gl_FragColor = vec4(1.0,0.0,0.0,1.0);
         }
     </script>

     <script>
         function fail(x,y, buf, shouldBe)
         {
             var i = (y*50+x) * 4;
             var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe;
             testFailed(reason);
         }

         function pass()
         {
             testPassed("drawing is correct");
         }

         function init()
         {
   var canvas2d = document.getElementById("example2");
   var ctx2d = canvas2d.getContext("2d");
   ctx2d.fillStyle = "rgba(0, 0, 0, 255)"
   ctx2d.fillRect(0, 0, 50, 50);
   ctx2d.fillStyle = "rgba(255, 0, 0, 255)"
   ctx2d.beginPath();
   ctx2d.moveTo(25, 12.5);
   ctx2d.lineTo(12.5, 37.5);
   ctx2d.lineTo(37.5, 37.5);
   ctx2d.lineTo(25, 12.5);
   ctx2d.fill();


             if (window.initNonKhronosFramework) {
                 window.initNonKhronosFramework(false);
             }

             gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1);
             gl.viewport(0, 0, 50, 50);

             var vertexObject = gl.createBuffer();
             gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
             gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
             gl.enableVertexAttribArray(0);
             gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);

             gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
             gl.drawArrays(gl.TRIANGLES, 0, 3);
        }

        init();
        successfullyParsed = true;
     </script>
 </body>
 <script src="../resources/js-test-post.js"></script>

 <script>
 </script>

 </body>
 </html>
	<!--
	Copyright (C) 2009 Apple Inc. All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:
	1. Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.
	2. Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	-->

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Canvas Compositing Test</title>
	<link rel="stylesheet" href="../resources/js-test-style.css"/>
	<script src="../resources/js-test-pre.js"></script>
	<script src="../conformance/resources/webgl-test.js"> </script>
	</head>
	<body>
	Below are 2 50x50 pixel canvas but using CSS to display them at 100x100 pixels. <br/>
	They are solid black with a red triangle<br/>
	They each have a 10px CSS solid black border around them.<br/>
	Depending on how the browser composites the canvas with the page they will get
	a white outline<hr/>
	<div>
	2d canvas<br/>
	<canvas id="example2" width="50" height="50" style="width: 100px; height: 100px; border: 10px solid black;"></canvas>
	</div>
	<hr/>
	3d canvas<br/>
	<div>
	<canvas id="example" width="50" height="50" style="width: 100px; height: 100px; border: 10px solid black;"></canvas>
	</div>
	<hr/>
	img tag<br/>
	<img src="50x50pixel-black-with-red-triangle.png" style="width: 100px; height: 100px; border: 10px solid black;"/>
	<div id="description"></div>
	<div id="console"></div>
	<script id="vshader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	void main()
	{
	gl_Position = vPosition;
	}
	</script>

	<script id="fshader" type="x-shader/x-fragment">
	void main()
	{
	gl_FragColor = vec4(1.0,0.0,0.0,1.0);
	}
	</script>

	<script>
	function fail(x,y, buf, shouldBe)
	{
	var i = (y50+x) 4;
	var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe;
	testFailed(reason);
	}

	function pass()
	{
	testPassed("drawing is correct");
	}

	function init()
	{
	var canvas2d = document.getElementById("example2");
	var ctx2d = canvas2d.getContext("2d");
	ctx2d.fillStyle = "rgba(0, 0, 0, 255)"
	ctx2d.fillRect(0, 0, 50, 50);
	ctx2d.fillStyle = "rgba(255, 0, 0, 255)"
	ctx2d.beginPath();
	ctx2d.moveTo(25, 12.5);
	ctx2d.lineTo(12.5, 37.5);
	ctx2d.lineTo(37.5, 37.5);
	ctx2d.lineTo(25, 12.5);
	ctx2d.fill();


	if (window.initNonKhronosFramework) {
	window.initNonKhronosFramework(false);
	}

	gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1);
	gl.viewport(0, 0, 50, 50);

	var vertexObject = gl.createBuffer();
	gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
	gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
	gl.enableVertexAttribArray(0);
	gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);

	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);
	gl.drawArrays(gl.TRIANGLES, 0, 3);
	}

	init();
	successfullyParsed = true;
	</script>
	</body>
	<script src="../resources/js-test-post.js"></script>

	<script>
	</script>

	</body>
	</html>