LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/canvas/drawingbuffer-static-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" width="50" height="50"> </canvas>

 <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>
 "use strict";

 function drawTriangleTest(gl)
 {
   var width = 50;
   var height = 50;
   gl.viewport(0, 0, width, height);
   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);

   // Test several locations
   wtu.checkCanvasRect(gl, 0, 0, width, 1, [0, 0, 0, 255],
       'First line should be all black');
   wtu.checkCanvasRect(gl, 20, 15, 10, 1, [255, 0, 0, 255],
       'Line 15 should be red for at least 10 red pixels starting 20 pixels in');
   wtu.checkCanvasRect(gl, 0, height - 1, width, 1, [0, 0, 0, 255],
       'Last line should be all black');
 }

 description("This test ensures WebGL implementations correctly implement drawingbufferWidth/Height with compositing.");

 debug("");

 var wtu = WebGLTestUtils;
 var err;
 var maxSize;
 var gl =  wtu.create3DContext("canvas");
 if (!gl) {
   testFailed("context does not exist");
 } else {
   testPassed("context exists");

   var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);
   shouldBeNonNull("program");
   gl.enable(gl.DEPTH_TEST);
   gl.clearColor(0, 0, 0, 1);
   shouldBe('gl.getError()', 'gl.NO_ERROR');

   debug("");
   debug("Checking drawingBufferWidth/drawingBufferHeight");

   shouldBe('gl.drawingBufferWidth', 'gl.canvas.width');
   shouldBe('gl.drawingBufferHeight', 'gl.canvas.height');

   // Check that changing the canvas size to something too large falls back to reasonable values.
   maxSize = gl.getParameter(gl.MAX_VIEWPORT_DIMS);
   shouldBeTrue('maxSize[0] > 0');
   shouldBeTrue('maxSize[1] > 0');

   // debug("MAX_VIEWPORT_DIMS = " + maxSize[0] + "x" + maxSize[1]);
   gl.canvas.width = maxSize[0] * 4;
   gl.canvas.height = maxSize[1] * 4;
   shouldBeTrue('gl.drawingBufferWidth > 0');
   shouldBeTrue('gl.drawingBufferHeight > 0');
   shouldBeTrue('gl.drawingBufferWidth <= maxSize[0]');
   shouldBeTrue('gl.drawingBufferHeight <= maxSize[1]');
   shouldBe('gl.getError()', 'gl.NO_ERROR');

   debug("");
   debug("Checking scaling up then back down to 50/50, drawing still works.");
   gl.canvas.width = 50;
   gl.canvas.height = 50;
   shouldBeTrue('gl.drawingBufferWidth == 50');
   shouldBeTrue('gl.drawingBufferHeight == 50');
   shouldBe('gl.getError()', 'gl.NO_ERROR');
   drawTriangleTest(gl);
   shouldBe('gl.getError()', 'gl.NO_ERROR');
 }
 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 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" width="50" height="50"> </canvas>

	<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>
	"use strict";

	function drawTriangleTest(gl)
	{
	var width = 50;
	var height = 50;
	gl.viewport(0, 0, width, height);
	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);

	// Test several locations
	wtu.checkCanvasRect(gl, 0, 0, width, 1, [0, 0, 0, 255],
	'First line should be all black');
	wtu.checkCanvasRect(gl, 20, 15, 10, 1, [255, 0, 0, 255],
	'Line 15 should be red for at least 10 red pixels starting 20 pixels in');
	wtu.checkCanvasRect(gl, 0, height - 1, width, 1, [0, 0, 0, 255],
	'Last line should be all black');
	}

	description("This test ensures WebGL implementations correctly implement drawingbufferWidth/Height with compositing.");

	debug("");

	var wtu = WebGLTestUtils;
	var err;
	var maxSize;
	var gl = wtu.create3DContext("canvas");
	if (!gl) {
	testFailed("context does not exist");
	} else {
	testPassed("context exists");

	var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);
	shouldBeNonNull("program");
	gl.enable(gl.DEPTH_TEST);
	gl.clearColor(0, 0, 0, 1);
	shouldBe('gl.getError()', 'gl.NO_ERROR');

	debug("");
	debug("Checking drawingBufferWidth/drawingBufferHeight");

	shouldBe('gl.drawingBufferWidth', 'gl.canvas.width');
	shouldBe('gl.drawingBufferHeight', 'gl.canvas.height');

	// Check that changing the canvas size to something too large falls back to reasonable values.
	maxSize = gl.getParameter(gl.MAX_VIEWPORT_DIMS);
	shouldBeTrue('maxSize[0] > 0');
	shouldBeTrue('maxSize[1] > 0');

	// debug("MAX_VIEWPORT_DIMS = " + maxSize[0] + "x" + maxSize[1]);
	gl.canvas.width = maxSize[0] * 4;
	gl.canvas.height = maxSize[1] * 4;
	shouldBeTrue('gl.drawingBufferWidth > 0');
	shouldBeTrue('gl.drawingBufferHeight > 0');
	shouldBeTrue('gl.drawingBufferWidth <= maxSize[0]');
	shouldBeTrue('gl.drawingBufferHeight <= maxSize[1]');
	shouldBe('gl.getError()', 'gl.NO_ERROR');

	debug("");
	debug("Checking scaling up then back down to 50/50, drawing still works.");
	gl.canvas.width = 50;
	gl.canvas.height = 50;
	shouldBeTrue('gl.drawingBufferWidth == 50');
	shouldBeTrue('gl.drawingBufferHeight == 50');
	shouldBe('gl.getError()', 'gl.NO_ERROR');
	drawTriangleTest(gl);
	shouldBe('gl.getError()', 'gl.NO_ERROR');
	}
	debug("")
	var successfullyParsed = true;
	</script>
	<script src="../../resources/js-test-post.js"></script>
	</body>
	</html>