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<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL clear after copyTexImage2D with a non-pure color</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>
<div id="description"></div>
<div id="console"></div>
<canvas id="canvas" width="128" height="128"> </canvas>
<script>
"use strict";
// This test verifies a Intel D3D driver bug.
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas", {"antialias" : "true"});
function testClearAfterCopyTexImage2DWithoutPureOneOrZero(clearColor, expectedColor)
{
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.clearColor(0, 0, 0, 1);
gl.clear(gl.COLOR_BUFFER_BIT);
var width = 16;
var height = 16;
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0);
gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
gl.clear(gl.COLOR_BUFFER_BIT);
wtu.checkCanvasRect(gl, 0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight, expectedColor);
gl.bindTexture(gl.TEXTURE_2D, null);
gl.deleteTexture(texture);
}
description("Test that if clear with a color that has non-0/1 RGB components after copyTexImage2D, the final render color should be consistent with the clear color.");
for(var index = 0; index < 3; index++)
{
var clearColor = [0, 0, 0, 1];
var expectedColor = [0, 0, 0, 255];
clearColor[index] = 0.8;
expectedColor[index] = 255 * clearColor[index];
testClearAfterCopyTexImage2DWithoutPureOneOrZero(clearColor, expectedColor);
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
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