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<!--
/*
** Copyright (c) 2016 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 BlitFramebuffer Tests</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
</head>
<body>
<canvas id="example" width="8" height="8"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
var wtu = WebGLTestUtils;
description("This test verifies blitFramebuffer won't cause a crash when the computed sizes might overflow.");
var width = 8;
var height = 8;
var gl = wtu.create3DContext("example", undefined, 2);
if (!gl) {
testFailed("WebGL context does not exist");
} else {
testPassed("WebGL context exists");
blit_region_test();
}
function blit_region_test() {
debug("");
debug("Begin to run blitFramebuffer. The computed width/height of src and/or dst region might overflow during blitting.");
var tex0 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex0);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
var fb0 = gl.createFramebuffer();
gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fb0);
gl.framebufferTexture2D(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex0, 0);
var tex1 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex1);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
var fb1 = gl.createFramebuffer();
gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fb1);
gl.framebufferTexture2D(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex1, 0);
if ((gl.checkFramebufferStatus(gl.READ_FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) ||
(gl.checkFramebufferStatus(gl.DRAW_FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE)) {
testFailed("Framebuffer incomplete.");
return;
}
var max = 0x7fffffff;
gl.blitFramebuffer(0, 0, max, max, 0, 0, width, height, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(0, 0, width, height, 0, 0, max, max, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(0, 0, max, max, 0, 0, max, max, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(-1, -1, max, max, 0, 0, width, height, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(0, 0, width, height, -1, -1, max, max, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(-1, -1, max, max, -1, -1, max, max, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.blitFramebuffer(-max - 1, -max - 1, max, max, -max - 1, -max - 1, max, max, gl.COLOR_BUFFER_BIT, gl.NEAREST);
testPassed("Congratulations! blitFramebuffer doesn't cause the browser crash when the computed width/height of src and/or dst region might overflow.");
}
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
