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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.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Tests if fake black textures are corectly implemented on desktops</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="24" height="24"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
function createTexture(gl,r,g,b,a) {
// setup render target texture //
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 3, 3, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
gl.bindTexture(gl.TEXTURE_2D, null);
// setup framebuffer //
var fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
// fill the framebuffer //
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.clearColor(r, g, b, a);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.deleteFramebuffer(fbo);
return texture;
}
function init() {
/*
* This test has been written due to a bug found in firefox's code
* and fixed in the following patch :
*/
var wtu = WebGLTestUtils;
description();
var gl = wtu.create3DContext("example");
var program = wtu.setupTexturedQuad(gl);
var texture0 = createTexture(gl,1,0,0,1);
var texture1 = createTexture(gl,0,1,0,1);
gl.bindTexture(gl.TEXTURE_2D, texture0);
gl.drawArrays(gl.TRIANGLES, 0, 6);
wtu.checkCanvas(gl, [255, 0, 0, 255]);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
gl.drawArrays(gl.TRIANGLES, 0, 6);
wtu.checkCanvas(gl, [0, 0, 0, 255]);
gl.bindTexture(gl.TEXTURE_2D, texture1);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.drawArrays(gl.TRIANGLES, 0, 6);
wtu.checkCanvas(gl, [0, 255, 0, 255]);
gl.bindTexture(gl.TEXTURE_2D, texture0);
gl.drawArrays(gl.TRIANGLES, 0, 6);
wtu.checkCanvas(gl, [0, 0, 0, 255]);
}
init();
var successfullyParsed = true;
</script>
<script src="../../../js/js-test-post.js"></script>
</body>
</html>