1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/conformance/limits/gl-max-texture-dimensions.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,97 @@
1.4 +<!--
1.5 +Copyright (c) 2011 The Chromium Authors. All rights reserved.
1.6 +Use of this source code is governed by a BSD-style license that can be
1.7 +found in the LICENSE file.
1.8 + -->
1.9 +<!DOCTYPE html>
1.10 +<html>
1.11 +<head>
1.12 +<meta charset="utf-8">
1.13 +<title>WebGL the max advertized texture size is supported.</title>
1.14 +<link rel="stylesheet" href="../../resources/js-test-style.css"/>
1.15 +<script src="../../resources/js-test-pre.js"></script>
1.16 +<script src="../resources/webgl-test.js"> </script>
1.17 +<script src="../resources/webgl-test-utils.js"> </script>
1.18 +</head>
1.19 +<body>
1.20 +<canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas>
1.21 +<div id="description"></div>
1.22 +<div id="console"></div>
1.23 +<script id="vshader" type="x-shader/x-vertex">
1.24 +attribute vec4 vPosition;
1.25 +attribute vec2 texCoord0;
1.26 +varying vec2 texCoord;
1.27 +void main()
1.28 +{
1.29 + gl_Position = vPosition;
1.30 + texCoord = texCoord0;
1.31 +}
1.32 +</script>
1.33 +
1.34 +<script id="fshader" type="x-shader/x-fragment">
1.35 +precision mediump float;
1.36 +uniform samplerCube tex;
1.37 +varying vec2 texCoord;
1.38 +void main()
1.39 +{
1.40 + gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1)));
1.41 +}
1.42 +</script>
1.43 +<script>
1.44 +description(document.title);
1.45 +var wtu = WebGLTestUtils;
1.46 +var gl = wtu.create3DContext("example");
1.47 +var program = wtu.setupTexturedQuad(gl);
1.48 +
1.49 +// Note: It seems like a reasonable assuption that a 1xN texture size should
1.50 +// work. Even 1 by 128k is only 512k
1.51 +var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
1.52 +debug("advertised max size: " + maxSize);
1.53 +var testSize = Math.min(maxSize, 128 * 1024);
1.54 +var pixels = new Uint8Array(testSize * 4);
1.55 +for (var ii = 0; ii < testSize; ++ii) {
1.56 + var off = ii * 4;
1.57 + pixels[off + 0] = 0;
1.58 + pixels[off + 1] = 255;
1.59 + pixels[off + 2] = 128;
1.60 + pixels[off + 3] = 255;
1.61 +}
1.62 +var tex = gl.createTexture();
1.63 +gl.bindTexture(gl.TEXTURE_2D, tex);
1.64 +
1.65 +debug("test " + testSize + "x1");
1.66 +gl.texImage2D(
1.67 + gl.TEXTURE_2D, 0, gl.RGBA, testSize, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE,
1.68 + pixels);
1.69 +gl.generateMipmap(gl.TEXTURE_2D);
1.70 +
1.71 +wtu.drawQuad(gl);
1.72 +wtu.checkCanvas(gl, [0, 255, 128, 255],
1.73 + "Should be 0, 255, 128, 255");
1.74 +debug("test 1x" + testSize);
1.75 +gl.texImage2D(
1.76 + gl.TEXTURE_2D, 0, gl.RGBA, 1, testSize, 0, gl.RGBA, gl.UNSIGNED_BYTE,
1.77 + pixels);
1.78 +gl.generateMipmap(gl.TEXTURE_2D);
1.79 +
1.80 +wtu.drawQuad(gl);
1.81 +wtu.checkCanvas(gl, [0, 255, 128, 255],
1.82 + "Should be 0, 255, 128, 255");
1.83 +
1.84 +var program = wtu.setupProgram(
1.85 + gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
1.86 +
1.87 +glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
1.88 +
1.89 +// NOTE: We can't easily test cube maps because they require width == height
1.90 +// and we might not have enough memory for maxSize by maxSize texture.
1.91 +
1.92 +successfullyParsed = true;
1.93 +
1.94 +</script>
1.95 +<script>finishTest();</script>
1.96 +
1.97 +</body>
1.98 +</html>
1.99 +
1.100 +
