conformance/canvas/drawingbuffer-test.html - chromium/deps/webgl/sdk/tests - 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">
 <title>WebGL Canvas.drawingBufferWidth,drawingBufferHeight Conformance Tests</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 <script src="../resources/webgl-test-utils.js"></script>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 "use strict";
 description();
 debug("");

 var gl;
 var oldViewport;

 function getMaxViewportDimensions() {
   // create a fresh canvas. This canvas will be discarded
   // after exiting this function.
   var canvas = document.createElement("canvas");
   gl = wtu.create3DContext(canvas, {antialias: false});
   if (!gl) {
     testFailed("context does not exist");
     return [0, 0];
   } else {
     testPassed("context exists");

     // For a default size canvas these should be equal.
     // WebGL contexts are not allowed to change the size of the drawingBuffer
     // for things like hi-res displays.
     shouldBe('gl.drawingBufferWidth', 'gl.canvas.width');
     shouldBe('gl.drawingBufferHeight', 'gl.canvas.height');
     return gl.getParameter(gl.MAX_VIEWPORT_DIMS);
   }
 }

 function test(desiredWidth, desiredHeight) {
   debug("");
   debug("testing canvas width = " + desiredWidth + ", height = " + desiredHeight);

   // Make a fresh canvas.
   var canvas = document.createElement("canvas");
   canvas.width = desiredWidth;
   canvas.height = desiredHeight;

   // This 'gl' must be global for shouldBe to work.
   gl = wtu.create3DContext(canvas, {antialias: false});
   if (!gl) {
     testFailed("context does not exist");
   } else {
     testPassed("context exists");

     // Verify these stats didn't change since they come from a different
     // context.
     shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[0]', 'maxSize[0]');
     shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[1]', 'maxSize[1]');

     // check the initial viewport matches the drawingBufferWidth and drawingBufferHeight
     shouldBe('gl.getParameter(gl.VIEWPORT)[0]', '0');
     shouldBe('gl.getParameter(gl.VIEWPORT)[1]', '0');
     shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'gl.drawingBufferWidth');
     shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'gl.drawingBufferHeight');

     debug("");
     debug("testing resizing canvas to width = " + desiredWidth + ", height = " + desiredHeight);

     oldViewport = gl.getParameter(gl.VIEWPORT);

     // flip width and height
     canvas.width = desiredHeight;
     canvas.height = desiredWidth;

     // Verify the viewport didn't change.
     shouldBe('gl.getParameter(gl.VIEWPORT)[0]', 'oldViewport[0]');
     shouldBe('gl.getParameter(gl.VIEWPORT)[1]', 'oldViewport[1]');
     shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'oldViewport[2]');
     shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'oldViewport[3]');

     // fix the viewport
 //    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

     shouldBe('gl.getError()', 'gl.NO_ERROR');
   }
 }

 var wtu = WebGLTestUtils;
 var maxSize = getMaxViewportDimensions();
 debug("MAX_VIEWPORT_DIMS: " + maxSize[0] + ", " + maxSize[1]);

 shouldBeTrue('maxSize[0] > 0');
 shouldBeTrue('maxSize[1] > 0');

 // test a small size to make sure it works at all.
 test(16, 32);

 // Make a canvas slightly larger than the max size WebGL can handle.
 // From section 2.2 of the spec the WebGL implementation should allow this to work.

 // test a size larger than MAX_VIEWPORT_DIMS in both dimensions
 test(maxSize[0] + 32, 8);

 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">
	<title>WebGL Canvas.drawingBufferWidth,drawingBufferHeight Conformance Tests</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/webgl-test.js"></script>
	<script src="../resources/webgl-test-utils.js"></script>
	</head>
	<body>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	"use strict";
	description();
	debug("");

	var gl;
	var oldViewport;

	function getMaxViewportDimensions() {
	// create a fresh canvas. This canvas will be discarded
	// after exiting this function.
	var canvas = document.createElement("canvas");
	gl = wtu.create3DContext(canvas, {antialias: false});
	if (!gl) {
	testFailed("context does not exist");
	return [0, 0];
	} else {
	testPassed("context exists");

	// For a default size canvas these should be equal.
	// WebGL contexts are not allowed to change the size of the drawingBuffer
	// for things like hi-res displays.
	shouldBe('gl.drawingBufferWidth', 'gl.canvas.width');
	shouldBe('gl.drawingBufferHeight', 'gl.canvas.height');
	return gl.getParameter(gl.MAX_VIEWPORT_DIMS);
	}
	}

	function test(desiredWidth, desiredHeight) {
	debug("");
	debug("testing canvas width = " + desiredWidth + ", height = " + desiredHeight);

	// Make a fresh canvas.
	var canvas = document.createElement("canvas");
	canvas.width = desiredWidth;
	canvas.height = desiredHeight;

	// This 'gl' must be global for shouldBe to work.
	gl = wtu.create3DContext(canvas, {antialias: false});
	if (!gl) {
	testFailed("context does not exist");
	} else {
	testPassed("context exists");

	// Verify these stats didn't change since they come from a different
	// context.
	shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[0]', 'maxSize[0]');
	shouldBe('gl.getParameter(gl.MAX_VIEWPORT_DIMS)[1]', 'maxSize[1]');

	// check the initial viewport matches the drawingBufferWidth and drawingBufferHeight
	shouldBe('gl.getParameter(gl.VIEWPORT)[0]', '0');
	shouldBe('gl.getParameter(gl.VIEWPORT)[1]', '0');
	shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'gl.drawingBufferWidth');
	shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'gl.drawingBufferHeight');

	debug("");
	debug("testing resizing canvas to width = " + desiredWidth + ", height = " + desiredHeight);

	oldViewport = gl.getParameter(gl.VIEWPORT);

	// flip width and height
	canvas.width = desiredHeight;
	canvas.height = desiredWidth;

	// Verify the viewport didn't change.
	shouldBe('gl.getParameter(gl.VIEWPORT)[0]', 'oldViewport[0]');
	shouldBe('gl.getParameter(gl.VIEWPORT)[1]', 'oldViewport[1]');
	shouldBe('gl.getParameter(gl.VIEWPORT)[2]', 'oldViewport[2]');
	shouldBe('gl.getParameter(gl.VIEWPORT)[3]', 'oldViewport[3]');

	// fix the viewport
	// gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

	shouldBe('gl.getError()', 'gl.NO_ERROR');
	}
	}

	var wtu = WebGLTestUtils;
	var maxSize = getMaxViewportDimensions();
	debug("MAX_VIEWPORT_DIMS: " + maxSize[0] + ", " + maxSize[1]);

	shouldBeTrue('maxSize[0] > 0');
	shouldBeTrue('maxSize[1] > 0');

	// test a small size to make sure it works at all.
	test(16, 32);

	// Make a canvas slightly larger than the max size WebGL can handle.
	// From section 2.2 of the spec the WebGL implementation should allow this to work.

	// test a size larger than MAX_VIEWPORT_DIMS in both dimensions
	test(maxSize[0] + 32, 8);

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