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/*
** 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.
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** 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.
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** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<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>
<canvas id="example" width="4" height="4"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description('Verifies that GL texture bindings do not change when canvas is resized');

var err;
var wtu = WebGLTestUtils;
var canvas = document.getElementById("example");
var gl = wtu.create3DContext(canvas);
var program = wtu.setupTexturedQuad(gl);

var green = [0, 255, 0, 255];
var blue = [0, 0, 255, 255];
var tex0 = gl.createTexture();
wtu.fillTexture(gl, tex0, 1, 1, blue, 0);
gl.activeTexture(gl.TEXTURE1)
var tex1 = gl.createTexture();
wtu.fillTexture(gl, tex1, 1, 1, green, 0);

var loc = gl.getUniformLocation(program, "tex");

function test() {
  gl.viewport(0, 0, canvas.width, canvas.height);
  gl.uniform1i(loc, 0);
  wtu.clearAndDrawUnitQuad(gl);
  wtu.checkCanvas(gl, blue, "should be blue");
  gl.uniform1i(loc, 1);
  wtu.clearAndDrawUnitQuad(gl);
  wtu.checkCanvas(gl, green, "should be green");
}

debug("test before resizing canvas");
test();
debug("test after resizing canvas");
canvas.width = 8;
test();
debug("test after resizing canvas and waiting for compositing");
canvas.width = 16;
wtu.waitForComposite(function() {
  test();
  finishTest();
  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
});

var successfullyParsed = true;
</script>
</body>
</html>