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90 lines
3.0 KiB
90 lines
3.0 KiB
/*
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* Copyright (c) 2011 The Chromium Authors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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var canvas = null;
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var gl = null;
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var glvao = null;
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var start_time = null;
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function main() {
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canvas = document.getElementById("webGL");
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window.webGLCanvas = canvas;
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//canvas = WebGLDebugUtils.makeLostContextSimulatingCanvas(canvas);
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canvas.addEventListener('webglcontextlost', handleContextLost, false);
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canvas.addEventListener('webglcontextrestored', handleContextRestored, false);
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//canvas.loseContextInNCalls(200000);// tell the simulator when to lose context.
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var ratio = window.devicePixelRatio ? window.devicePixelRatio : 1;
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canvas.width = 640 * ratio;
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canvas.height = 480 * ratio;
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gl = WebGLUtils.setupWebGL(canvas);
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if (!gl)
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return;
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setupVertexArrayObject(gl);
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glvao = gl.getExtension("OES_vertex_array_object");
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initGL();
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}
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function log(msg) {
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if (window.console && window.console.log) {
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console.log(msg);
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}
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}
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function handleContextLost(e) {
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log("handle context lost");
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e.preventDefault();
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}
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function handleContextRestored() {
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log("handle context restored");
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//canvas.loseContextInNCalls(200000);// tell the simulator when to lose context.
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initGL();
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}
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function initGL() {
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gl.clearColor(0., 0., 0., 1.);
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gl.clear(gl.COLOR_BUFFER_BIT);
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appInit();
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start_time = (new Date()).getTime();
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render();
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}
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function render() {
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appRender((new Date()).getTime() - start_time,
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canvas.width, canvas.height);
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if (myDiagram) myDiagram.redraw();
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window.requestAnimFrame(render, canvas);
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} |