LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/canvas/canvas-test.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">
 <title>WebGL Canvas 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-utils.js"></script>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
 <canvas id="canvas2d" width="40" height="40"> </canvas>
 <script>
 "use strict";

 description("This test ensures WebGL implementations interact correctly with the canvas tag.");

 debug("");
 debug("Canvas.getContext");

 var err;
 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("canvas");
 var canvas2d = document.getElementById("canvas2d");
 var ctx2d = canvas2d.getContext("2d");
 var gl = wtu.create3DContext(canvas);
 if (!gl) {
   testFailed("context does not exist");
 } else {
   testPassed("context exists");

   debug("");
   debug("Checking canvas and WebGL interaction");

   // Check that a canvas with no width or height is 300x150 pixels
   shouldBe('canvas.width', '300');
   shouldBe('canvas.height', '150');

   // Check get a 4 value gl parameter as a csv string.
   var getValue4v = function(name) {
     var v = gl.getParameter(name);
     var result = '' +
         v[0] + ',' +
         v[1] + ',' +
         v[2] + ',' +
         v[3];
     return result;
   }

   var getViewport = function() {
     return getValue4v(gl.VIEWPORT);
   }

   var getClearColor = function() {
     return getValue4v(gl.COLOR_CLEAR_VALUE);
   }

   var isAboutEqual = function(a, b) {
     return Math.abs(a - b) < 0.01;
   }

   var isAboutEqualInt = function(a, b) {
     return Math.abs(a - b) < 3;
   }

   var checkCanvasContentIs = function(r3d,g3d,b3d,a3d) {
     var r2d;
     var g2d;
     var b2d;
     var a2d;

     var checkPixel = function(x, y, r3d,g3d,b3d,a3d) {
       var offset = (y * 40 + x) * 4;
       r2d = imgData.data[offset];
       g2d = imgData.data[offset + 1];
       b2d = imgData.data[offset + 2];
       a2d = imgData.data[offset + 3];
       //debug('' + x + ', ' + y + "(" + offset + ") = " + r2d + ", " + g2d + ", " + b2d + ", " + a2d);
       return isAboutEqualInt(r2d, r3d) &&
              isAboutEqualInt(g2d, g3d) &&
              isAboutEqualInt(b2d, b3d) &&
              isAboutEqualInt(a2d, a3d);
     }

     var checkPixels = function(r3d,g3d,b3d,a3d) {
       return checkPixel(0, 0, r3d, g3d, b3d, a3d) &&
              checkPixel(0, 39, r3d, g3d, b3d, a3d) &&
              checkPixel(39, 0, r3d, g3d, b3d, a3d) &&
              checkPixel(39, 39, r3d, g3d, b3d, a3d) &&
              checkPixel(0, 0, r3d, g3d, b3d, a3d);
     };

     // Set to just take the color from the 3d canvas
     ctx2d.globalCompositeOperation = 'copy';

     // fill 2d canvas with orange
     ctx2d.fillStyle = "rgb(255,192,128)";
     ctx2d.fillRect (0, 0, 40, 40);

     // get the image data
     var imgData = ctx2d.getImageData(0, 0, 40, 40);

     // check it got cleared.
     if (!checkPixels(255, 192, 128, 255)) {
       testFailed("unable to fill 2d context.");
       return;
     }

     // draw 3d canvas on top.
     ctx2d.drawImage(canvas, 0,0, 40, 40);

     // get the image data
     var imgData = ctx2d.getImageData(0, 0, 40, 40);

     // Check it's the expected color.
     if (!checkPixels(r3d, g3d, b3d, a3d)) {
      testFailed("pixels are " + r2d + "," + g2d + "," + b2d + "," + a2d +
                 " expected " + r3d + "," + g3d + "," + b3d + "," + a3d);
     } else {
       testPassed("pixels are " + r3d + "," + g3d + "," + b3d + "," + a3d);
     }
   }

   checkCanvasContentIs(0, 0, 0, 0);
   shouldBe('getViewport()', '"0,0,300,150"');

   // Change the display size of the canvas and check
   // the viewport size does not change.
   debug("");
   debug("change display size of canvas and see that viewport does not change");
   canvas.style.width = "100px";
   canvas.style.height = "25px";
   var intervalId;
   intervalId = window.setInterval(function() {
     if (canvas.clientWidth == 100 &&
         canvas.clientHeight == 25) {
       window.clearInterval(intervalId);
       shouldBe('getViewport()', '"0,0,300,150"');
       shouldBe('canvas.width', '300');
       shouldBe('canvas.height', '150');

       // Change the actual size of the canvas
       // Check that the viewport does not change.
       // Check that the clear color does not change.
       // Check that the color mask does not change.
       debug("");
       debug("change the actual size of the canvas and see that the viewport does not change");
       gl.clearColor(0.25, 0.5, 0.75, 1);
       gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
       checkCanvasContentIs(64, 128, 192, 255);
       gl.colorMask(0,0,0,0);
       wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No GL errors before resizing the canvas");
       canvas.width = 400;
       canvas.height = 10;
       err = gl.getError();
       // Some implementations might lost the context when resizing
       if (err != gl.CONTEXT_LOST_WEBGL) {
         shouldBe("err", "gl.NO_ERROR");
         var v = gl.getParameter(gl.COLOR_CLEAR_VALUE);
         assertMsg(isAboutEqual(v[0], 0.25) &&
                   isAboutEqual(v[1], 0.5) &&
                   isAboutEqual(v[2], 0.75) &&
                   isAboutEqual(v[3], 1),
                   "gl.clearColor should not change after canvas resize");
         v = gl.getParameter(gl.COLOR_WRITEMASK);
         assertMsg(isAboutEqual(v[0], 0) &&
                   isAboutEqual(v[1], 0) &&
                   isAboutEqual(v[2], 0) &&
                   isAboutEqual(v[3], 0),
                   "gl.colorMask should not change after canvas resize");
         shouldBe('getViewport()', '"0,0,300,150"');
         checkCanvasContentIs(0, 0, 0, 0);
       }

       debug("");
       finishTest();
     }
    }, 1000/30);
 }
 </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 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-utils.js"></script>
	</head>
	<body>
	<div id="description"></div>
	<div id="console"></div>
	<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
	<canvas id="canvas2d" width="40" height="40"> </canvas>
	<script>
	"use strict";

	description("This test ensures WebGL implementations interact correctly with the canvas tag.");

	debug("");
	debug("Canvas.getContext");

	var err;
	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("canvas");
	var canvas2d = document.getElementById("canvas2d");
	var ctx2d = canvas2d.getContext("2d");
	var gl = wtu.create3DContext(canvas);
	if (!gl) {
	testFailed("context does not exist");
	} else {
	testPassed("context exists");

	debug("");
	debug("Checking canvas and WebGL interaction");

	// Check that a canvas with no width or height is 300x150 pixels
	shouldBe('canvas.width', '300');
	shouldBe('canvas.height', '150');

	// Check get a 4 value gl parameter as a csv string.
	var getValue4v = function(name) {
	var v = gl.getParameter(name);
	var result = '' +
	v[0] + ',' +
	v[1] + ',' +
	v[2] + ',' +
	v[3];
	return result;
	}

	var getViewport = function() {
	return getValue4v(gl.VIEWPORT);
	}

	var getClearColor = function() {
	return getValue4v(gl.COLOR_CLEAR_VALUE);
	}

	var isAboutEqual = function(a, b) {
	return Math.abs(a - b) < 0.01;
	}

	var isAboutEqualInt = function(a, b) {
	return Math.abs(a - b) < 3;
	}

	var checkCanvasContentIs = function(r3d,g3d,b3d,a3d) {
	var r2d;
	var g2d;
	var b2d;
	var a2d;

	var checkPixel = function(x, y, r3d,g3d,b3d,a3d) {
	var offset = (y * 40 + x) * 4;
	r2d = imgData.data[offset];
	g2d = imgData.data[offset + 1];
	b2d = imgData.data[offset + 2];
	a2d = imgData.data[offset + 3];
	//debug('' + x + ', ' + y + "(" + offset + ") = " + r2d + ", " + g2d + ", " + b2d + ", " + a2d);
	return isAboutEqualInt(r2d, r3d) &&
	isAboutEqualInt(g2d, g3d) &&
	isAboutEqualInt(b2d, b3d) &&
	isAboutEqualInt(a2d, a3d);
	}

	var checkPixels = function(r3d,g3d,b3d,a3d) {
	return checkPixel(0, 0, r3d, g3d, b3d, a3d) &&
	checkPixel(0, 39, r3d, g3d, b3d, a3d) &&
	checkPixel(39, 0, r3d, g3d, b3d, a3d) &&
	checkPixel(39, 39, r3d, g3d, b3d, a3d) &&
	checkPixel(0, 0, r3d, g3d, b3d, a3d);
	};

	// Set to just take the color from the 3d canvas
	ctx2d.globalCompositeOperation = 'copy';

	// fill 2d canvas with orange
	ctx2d.fillStyle = "rgb(255,192,128)";
	ctx2d.fillRect (0, 0, 40, 40);

	// get the image data
	var imgData = ctx2d.getImageData(0, 0, 40, 40);

	// check it got cleared.
	if (!checkPixels(255, 192, 128, 255)) {
	testFailed("unable to fill 2d context.");
	return;
	}

	// draw 3d canvas on top.
	ctx2d.drawImage(canvas, 0,0, 40, 40);

	// get the image data
	var imgData = ctx2d.getImageData(0, 0, 40, 40);

	// Check it's the expected color.
	if (!checkPixels(r3d, g3d, b3d, a3d)) {
	testFailed("pixels are " + r2d + "," + g2d + "," + b2d + "," + a2d +
	" expected " + r3d + "," + g3d + "," + b3d + "," + a3d);
	} else {
	testPassed("pixels are " + r3d + "," + g3d + "," + b3d + "," + a3d);
	}
	}

	checkCanvasContentIs(0, 0, 0, 0);
	shouldBe('getViewport()', '"0,0,300,150"');

	// Change the display size of the canvas and check
	// the viewport size does not change.
	debug("");
	debug("change display size of canvas and see that viewport does not change");
	canvas.style.width = "100px";
	canvas.style.height = "25px";
	var intervalId;
	intervalId = window.setInterval(function() {
	if (canvas.clientWidth == 100 &&
	canvas.clientHeight == 25) {
	window.clearInterval(intervalId);
	shouldBe('getViewport()', '"0,0,300,150"');
	shouldBe('canvas.width', '300');
	shouldBe('canvas.height', '150');

	// Change the actual size of the canvas
	// Check that the viewport does not change.
	// Check that the clear color does not change.
	// Check that the color mask does not change.
	debug("");
	debug("change the actual size of the canvas and see that the viewport does not change");
	gl.clearColor(0.25, 0.5, 0.75, 1);
	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);
	checkCanvasContentIs(64, 128, 192, 255);
	gl.colorMask(0,0,0,0);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No GL errors before resizing the canvas");
	canvas.width = 400;
	canvas.height = 10;
	err = gl.getError();
	// Some implementations might lost the context when resizing
	if (err != gl.CONTEXT_LOST_WEBGL) {
	shouldBe("err", "gl.NO_ERROR");
	var v = gl.getParameter(gl.COLOR_CLEAR_VALUE);
	assertMsg(isAboutEqual(v[0], 0.25) &&
	isAboutEqual(v[1], 0.5) &&
	isAboutEqual(v[2], 0.75) &&
	isAboutEqual(v[3], 1),
	"gl.clearColor should not change after canvas resize");
	v = gl.getParameter(gl.COLOR_WRITEMASK);
	assertMsg(isAboutEqual(v[0], 0) &&
	isAboutEqual(v[1], 0) &&
	isAboutEqual(v[2], 0) &&
	isAboutEqual(v[3], 0),
	"gl.colorMask should not change after canvas resize");
	shouldBe('getViewport()', '"0,0,300,150"');
	checkCanvasContentIs(0, 0, 0, 0);
	}

	debug("");
	finishTest();
	}
	}, 1000/30);
	}
	</script>

	</body>
	</html>