LayoutTests/fast/canvas/webgl/canvas-test.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>WebGL Canvas Conformance Tests</title>
 <script src="resources/desktop-gl-constants.js" type="text/javascript"></script>
 <script src="../../../resources/js-test.js"></script>
 <script src="resources/webgl-test.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>
 if (window.initNonKhronosFramework) {
   window.initNonKhronosFramework(true);
 }

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

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

 var canvas = document.getElementById("canvas");
 var canvas2d = document.getElementById("canvas2d");
 var ctx2d = canvas2d.getContext("2d");
 var gl = 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.
   function getValue4v(name) {
     var v = gl.getParameter(name);
     var result = '' +
         v[0] + ',' +
         v[1] + ',' +
         v[2] + ',' +
         v[3];
     return result;
   }

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

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

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

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

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

     function checkPixel(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);
     }

     function checkPixels(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 (window.testRunner)
       testRunner.displayAndTrackRepaints();
     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);
       canvas.width = 400;
       canvas.height = 10;

       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("");
       var epilogue = document.createElement("script");
       epilogue.onload = finish;
       epilogue.src = "../../../resources/js-test-post.js";
       document.body.appendChild(epilogue);
     }
    }, 1000/30);
 }

 function finish() {
   if (window.nonKhronosFrameworkNotifyDone) {
     window.nonKhronosFrameworkNotifyDone();
   }
 }

 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<title>WebGL Canvas Conformance Tests</title>
	<script src="resources/desktop-gl-constants.js" type="text/javascript"></script>
	<script src="../../../resources/js-test.js"></script>
	<script src="resources/webgl-test.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>
	if (window.initNonKhronosFramework) {
	window.initNonKhronosFramework(true);
	}

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

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

	var canvas = document.getElementById("canvas");
	var canvas2d = document.getElementById("canvas2d");
	var ctx2d = canvas2d.getContext("2d");
	var gl = 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.
	function getValue4v(name) {
	var v = gl.getParameter(name);
	var result = '' +
	v[0] + ',' +
	v[1] + ',' +
	v[2] + ',' +
	v[3];
	return result;
	}

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

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

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

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

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

	function checkPixel(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);
	}

	function checkPixels(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 (window.testRunner)
	testRunner.displayAndTrackRepaints();
	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);
	canvas.width = 400;
	canvas.height = 10;

	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("");
	var epilogue = document.createElement("script");
	epilogue.onload = finish;
	epilogue.src = "../../../resources/js-test-post.js";
	document.body.appendChild(epilogue);
	}
	}, 1000/30);
	}

	function finish() {
	if (window.nonKhronosFrameworkNotifyDone) {
	window.nonKhronosFrameworkNotifyDone();
	}
	}

	</script>
	</body>
	</html>