mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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135 lines
4.8 KiB
HTML
135 lines
4.8 KiB
HTML
<!--
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Copyright (c) 2009 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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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<title>WebGL pixelStorei Test</title>
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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 src="../resources/desktop-gl-constants.js" type="text/javascript"></script>
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</head>
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<body>
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<canvas id="example" width="50" height="50"></canvas>
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<canvas id="2d00" width="50" height="50"></canvas>
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<canvas id="2d01" width="50" height="50"></canvas>
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<canvas id="2d02" width="50" height="50"></canvas>
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<canvas id="2d03" width="50" height="50"></canvas>
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<div id="description"></div>
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<div id="console"></div>
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<script id="vshader" type="x-shader/x-vertex">
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attribute vec4 vPosition;
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void main()
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{
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gl_Position = vPosition;
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}
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</script>
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<script id="fshader" type="x-shader/x-fragment">
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void main()
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{
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gl_FragColor = vec4(1.0,0.0,0.0,1.0);
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}
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</script>
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<script>
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function fail(x,y, name, buf, shouldBe)
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{
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var i = (y*50+x) * 4;
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var reason = "pixel in "+name+" at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe;
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testFailed(reason);
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}
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function pass(name)
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{
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testPassed("drawing is correct in " + name);
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}
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function init()
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{
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if (window.layoutTestController) {
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layoutTestController.overridePreference("WebKitWebGLEnabled", "1");
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layoutTestController.dumpAsText();
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}
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debug("There should be 5 red triangles on 5 black squares above");
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debug("");
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debug("This test checks that drawImage and readPixels are not effected by gl.Pixelstorei(gl.PACK_ALIGNMENT) and visa versa");
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debug("");
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var canvas3d = document.getElementById("example");
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gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1);
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var vertexObject = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
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gl.bufferData(gl.ARRAY_BUFFER, new WebGLFloatArray([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
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gl.enableVertexAttribArray(0);
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gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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gl.drawArrays(gl.TRIANGLES, 0, 3);
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function checkData(buf, name) {
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// Test several locations
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// First line should be all black
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for (var i = 0; i < 50; ++i)
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if (buf[i*4] != 0 || buf[i*4+1] != 0 || buf[i*4+2] != 0 || buf[i*4+3] != 255) {
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fail(i, 0, name, buf, "(0,0,0,255)");
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return;
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}
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// Line 15 should be red for at least 10 red pixels starting 20 pixels in
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var offset = (15*50+20) * 4;
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for (var i = 0; i < 10; ++i)
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if (buf[offset+i*4] != 255 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) {
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fail(20 + i, 15, name, buf, "(255,0,0,255)");
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return;
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}
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// Last line should be all black
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offset = (49*50) * 4;
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for (var i = 0; i < 50; ++i)
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if (buf[offset+i*4] != 0 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) {
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fail(i, 49, name, buf, "(0,0,0,255)");
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return;
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}
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pass(name);
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}
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function checkColors() {
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var buf = gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE);
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checkData(buf, "3d context");
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var imgData = ctx2d.getImageData(0, 0, 50, 50);
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checkData(imgData.data, "2d context");
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}
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var table = [1, 2, 4, 8];
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for (var ii = 0; ii < table.length; ++ii) {
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gl.pixelStorei(gl.PACK_ALIGNMENT, table[ii]);
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ctx2d = document.getElementById("2d0" + ii).getContext("2d");
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ctx2d.globalCompositeOperation = 'copy';
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ctx2d.drawImage(canvas3d, 0, 0);
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checkColors();
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assertMsg(gl.getParameter(gl.PACK_ALIGNMENT) == table[ii],
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"PACK_ALIGNMENT is " + table[ii]);
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}
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}
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init();
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successfullyParsed = true;
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</script>
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</body>
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<script src="../resources/js-test-post.js"></script>
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<script>
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</script>
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</body>
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</html>
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