LayoutTests/webgl/1.0.3/resources/webgl_test_files/extra/buffer-gc-stress.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2014 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>Float32Array garbage collection 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-utils.js"> </script>
 </head>
 <body>
 <canvas id="canvas" width="40" height="40"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script id="vshader" type="x-shader/x-vertex">
 attribute vec2 inPosition;
 attribute vec4 inColor;

 varying vec4 color;

 void main()
 {
     color = inColor;

     gl_Position = vec4(inPosition, 0.0, 1.0);
 }
 </script>
 <script id="fshader" type="x-shader/x-fragment">
 precision mediump float;

 varying vec4 color;

 void main()
 {
     if (color == vec4(0.0))
         discard;

     gl_FragColor = color;
 }
 </script>

 <script>
 "use strict";

 description("Allocates a buffer object and then updates it repeatedly using throw-away Float32Array objects. " +
             "Ideally, this should not result in a browser crash or instability, since GC should be able to collect all Float32Arrays.");
 var wtu = WebGLTestUtils;

 var vertices = [];
 var w = 0.25;
 for (var x = -1; x < 1; x += w) {
     for (var y = -1; y < 1; y += w) {
         vertices.push(x + w, y + w);
         vertices.push(x,     y + w);
         vertices.push(x,     y    );

         vertices.push(x + w, y + w);
         vertices.push(x,     y    );
         vertices.push(x + w, y    );
     }
 }
 var numVertices = (vertices.length / 2);

 var gl;
 var squareBuffer;
 var buffer;
 var updateBufferData;
 var drawIterationsPerTest = 100;

 function initGL() {
     gl = wtu.create3DContext("canvas");
     var attribs = ["inPosition", "inColor"];
     wtu.setupProgram(gl, ["vshader", "fshader"], attribs);
     gl.disable(gl.DEPTH_TEST);
     gl.disable(gl.BLEND);

     squareBuffer = gl.createBuffer();
     gl.enableVertexAttribArray(0);
     gl.bindBuffer(gl.ARRAY_BUFFER, squareBuffer);
     gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
     gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);

     buffer = gl.createBuffer();
     gl.enableVertexAttribArray(1);
     gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
     gl.vertexAttribPointer(1, 4, gl.FLOAT, false, 0, 0);
 }

 var testIndex = -1;
 var drawIterations = 0;
 var size = 0;
 function runNextTest() {
     ++testIndex;
     var prevSize = size;
     size = Math.pow(2, testIndex) * numVertices * 16;

     if (size > 2 * 1024 * 1024 && prevSize <= 2 * 1024 * 1024) {
         if (!confirm("The following tests can cause unresponsiveness or instability. Press OK to continue.")) {
             testFailed("Tests aborted");
             return;
         }
     }

     if (size > 64 * 1024 * 1024) {
         gl.deleteBuffer(buffer);
         testPassed("Tests finished");
         return;
     }

     debug('Initializing buffer with size: ' + size);
     gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
     gl.bufferData(gl.ARRAY_BUFFER, size, gl.DYNAMIC_DRAW);
     updateBufferData = new Float32Array(size / 4);

     debug("Drawing " + drawIterationsPerTest + " times, each time creating a new throw-away Float32Array of size " + size + " and using it to update the buffer");
     drawIterations = 0;
     doDraw();
 };

 var doDraw = function() {
     gl.clearColor(0, 255, 0, 255);
     gl.clear(gl.COLOR_BUFFER_BIT);

     // Update the array buffer with a throw-away Float32Array
     gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
     gl.bufferSubData(gl.ARRAY_BUFFER, 0, new Float32Array(updateBufferData));

     gl.drawArrays(gl.TRIANGLES, 0, numVertices);
     var error = gl.getError();
     if (error !== gl.NO_ERROR) {
         testFailed("drawArrays failed with error " + wtu.glEnumToString(gl, error));
         return;
     }
     if (drawIterations < drawIterationsPerTest) {
         ++drawIterations;
         requestAnimationFrame(doDraw);
     } else {
         runNextTest();
     }
 };

 initGL();
 runNextTest();

 var successfullyParsed = true;
 </script>

 </body>
 </html>
	<!--

	/*
	** Copyright (c) 2014 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>Float32Array garbage collection 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-utils.js"> </script>
	</head>
	<body>
	<canvas id="canvas" width="40" height="40"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script id="vshader" type="x-shader/x-vertex">
	attribute vec2 inPosition;
	attribute vec4 inColor;

	varying vec4 color;

	void main()
	{
	color = inColor;

	gl_Position = vec4(inPosition, 0.0, 1.0);
	}
	</script>
	<script id="fshader" type="x-shader/x-fragment">
	precision mediump float;

	varying vec4 color;

	void main()
	{
	if (color == vec4(0.0))
	discard;

	gl_FragColor = color;
	}
	</script>

	<script>
	"use strict";

	description("Allocates a buffer object and then updates it repeatedly using throw-away Float32Array objects. " +
	"Ideally, this should not result in a browser crash or instability, since GC should be able to collect all Float32Arrays.");
	var wtu = WebGLTestUtils;

	var vertices = [];
	var w = 0.25;
	for (var x = -1; x < 1; x += w) {
	for (var y = -1; y < 1; y += w) {
	vertices.push(x + w, y + w);
	vertices.push(x, y + w);
	vertices.push(x, y );

	vertices.push(x + w, y + w);
	vertices.push(x, y );
	vertices.push(x + w, y );
	}
	}
	var numVertices = (vertices.length / 2);

	var gl;
	var squareBuffer;
	var buffer;
	var updateBufferData;
	var drawIterationsPerTest = 100;

	function initGL() {
	gl = wtu.create3DContext("canvas");
	var attribs = ["inPosition", "inColor"];
	wtu.setupProgram(gl, ["vshader", "fshader"], attribs);
	gl.disable(gl.DEPTH_TEST);
	gl.disable(gl.BLEND);

	squareBuffer = gl.createBuffer();
	gl.enableVertexAttribArray(0);
	gl.bindBuffer(gl.ARRAY_BUFFER, squareBuffer);
	gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
	gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);

	buffer = gl.createBuffer();
	gl.enableVertexAttribArray(1);
	gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
	gl.vertexAttribPointer(1, 4, gl.FLOAT, false, 0, 0);
	}

	var testIndex = -1;
	var drawIterations = 0;
	var size = 0;
	function runNextTest() {
	++testIndex;
	var prevSize = size;
	size = Math.pow(2, testIndex) * numVertices * 16;

	if (size > 2 * 1024 * 1024 && prevSize <= 2 * 1024 * 1024) {
	if (!confirm("The following tests can cause unresponsiveness or instability. Press OK to continue.")) {
	testFailed("Tests aborted");
	return;
	}
	}

	if (size > 64 * 1024 * 1024) {
	gl.deleteBuffer(buffer);
	testPassed("Tests finished");
	return;
	}

	debug('Initializing buffer with size: ' + size);
	gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
	gl.bufferData(gl.ARRAY_BUFFER, size, gl.DYNAMIC_DRAW);
	updateBufferData = new Float32Array(size / 4);

	debug("Drawing " + drawIterationsPerTest + " times, each time creating a new throw-away Float32Array of size " + size + " and using it to update the buffer");
	drawIterations = 0;
	doDraw();
	};

	var doDraw = function() {
	gl.clearColor(0, 255, 0, 255);
	gl.clear(gl.COLOR_BUFFER_BIT);

	// Update the array buffer with a throw-away Float32Array
	gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
	gl.bufferSubData(gl.ARRAY_BUFFER, 0, new Float32Array(updateBufferData));

	gl.drawArrays(gl.TRIANGLES, 0, numVertices);
	var error = gl.getError();
	if (error !== gl.NO_ERROR) {
	testFailed("drawArrays failed with error " + wtu.glEnumToString(gl, error));
	return;
	}
	if (drawIterations < drawIterationsPerTest) {
	++drawIterations;
	requestAnimationFrame(doDraw);
	} else {
	runNextTest();
	}
	};

	initGL();
	runNextTest();

	var successfullyParsed = true;
	</script>

	</body>
	</html>