mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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85 lines
2.7 KiB
HTML
85 lines
2.7 KiB
HTML
<!--
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Copyright (c) 2010 The Chromium Authors. All rights reserved.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file.
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-->
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<html>
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<head>
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<link rel="stylesheet" href="../resources/js-test-style.css"/>
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<script src="../resources/js-test-pre.js"></script>
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<script src="resources/webgl-test.js"></script>
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<script>
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function runTest()
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{
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var canvas = document.getElementById("testbed");
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var gl = create3DContext(canvas);
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if (!gl) {
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testFailed('canvas.getContext() failed');
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return false;
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}
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debug('Test whether the WebGL internal buffers have been initialized to 0.');
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var buf = new Uint8Array(500 * 500 * 4);
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gl.readPixels(0, 0, 500, 500, gl.RGBA, gl.UNSIGNED_BYTE, buf);
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if (gl.getError() != gl.NO_ERROR) {
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testFailed('GL error detected after readPixels().');
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return false;
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}
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var totalBytes = 500 * 500 * 4;
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for (var i = 0; i < totalBytes; ++i) {
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if (buf[i] != 0) {
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testFailed('WebGL internal buffers are dirty.');
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return false;
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}
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}
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testPassed('Buffers have been initialized to 0.');
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debug('Test whether user created buffers have been initialized to 0.');
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var fbo = gl.createFramebuffer();
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gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
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var colorbuffer = gl.createRenderbuffer();
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gl.bindRenderbuffer(gl.RENDERBUFFER, colorbuffer);
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gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, 500, 500);
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if (gl.getError() != gl.NO_ERROR) {
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testFailed('GL error detected after renderbufferStorage(internalformat = RGBA4).');
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return false;
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}
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gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, colorbuffer);
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if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
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testFailed('Framebuffer incomplete.');
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return false;
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}
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gl.readPixels(0, 0, 500, 500, gl.RGBA, gl.UNSIGNED_BYTE, buf);
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if (gl.getError() != gl.NO_ERROR) {
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testFailed('GL error detected after readPixels().');
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return false;
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}
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for (var i = 0; i < totalBytes; ++i) {
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if (buf[i] != 0) {
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testFailed('User created buffers are dirty.');
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return false;
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}
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}
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testPassed('Buffers have been initialized to 0.');
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return true;
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}
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</script>
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</head>
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<body>
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<canvas id="testbed" width="500px" height="500px"></canvas>
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<div id="description"></div>
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<div id="console"></div>
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<script>
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var successfullyParsed = false;
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description('Verify renderbuffers are initialized to 0 before being read in WebGL');
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runTest();
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successfullyParsed = true;
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</script>
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<script src="../resources/js-test-post.js"></script>
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</body>
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</html>
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