1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/conformance/glsl/samplers/glsl-function-texture2dlod.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,102 @@
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 texture2D GLSL conformance test.</title>
1.14 +<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
1.15 +<link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
1.16 +<script src="../../../resources/js-test-pre.js"></script>
1.17 +<script src="../../resources/webgl-test.js"> </script>
1.18 +<script src="../../resources/webgl-test-utils.js"> </script>
1.19 +</head>
1.20 +<body>
1.21 +<canvas id="example" width="256" height="256" style="width: 16px; height: 16px;"></canvas>
1.22 +<div id="description"></div>
1.23 +<div id="console"></div>
1.24 +<script id="vshader2d" type="x-shader/x-vertex">
1.25 +attribute vec4 vPosition;
1.26 +attribute vec2 texCoord0;
1.27 +varying vec4 color;
1.28 +uniform sampler2D tex;
1.29 +uniform float lod;
1.30 +void main() {
1.31 + gl_Position = vPosition;
1.32 + color = texture2DLod(tex, texCoord0, lod);
1.33 +}
1.34 +</script>
1.35 +<script id="fshader2d" type="x-shader/x-vertex">
1.36 +precision mediump float;
1.37 +varying vec4 color;
1.38 +void main() {
1.39 + gl_FragData[0] = color;
1.40 +}
1.41 +</script>
1.42 +<script>
1.43 +description("tests GLSL texture2DLod function");
1.44 +
1.45 +var wtu = WebGLTestUtils;
1.46 +var canvas = document.getElementById("example");
1.47 +
1.48 +shouldBe("canvas.width", "256");
1.49 +shouldBe("canvas.height", "256");
1.50 +
1.51 +var gl = wtu.create3DContext(canvas);
1.52 +var program = wtu.setupProgram(
1.53 + gl, ['vshader2d', 'fshader2d'], ['vPosition', 'texCoord0'], [0, 1]);
1.54 +wtu.setupUnitQuad(gl, 0, 1);
1.55 +
1.56 +var colors = [
1.57 + {name: 'red', color:[255, 0, 0, 255]},
1.58 + {name: 'green', color:[0, 255, 0, 255]},
1.59 + {name: 'blue', color:[0, 0, 255, 255]},
1.60 + {name: 'yellow', color:[255, 255, 0, 255]},
1.61 + {name: 'magenta', color:[255, 0, 255, 255]},
1.62 + {name: 'cyan', color:[0, 255, 255, 255]},
1.63 + {name: 'pink', color:[255, 128, 128, 255]},
1.64 + {name: 'gray', color:[128, 128, 128, 255]},
1.65 + {name: 'light green', color:[128, 255, 128, 255]},
1.66 +];
1.67 +
1.68 +shouldBe("colors.length", "9");
1.69 +
1.70 +var tex = gl.createTexture();
1.71 +gl.bindTexture(gl.TEXTURE_2D, tex);
1.72 +gl.texParameteri(
1.73 + gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);
1.74 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
1.75 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
1.76 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
1.77 +
1.78 +for (var ii = 0; ii < colors.length; ++ii) {
1.79 + var color = colors[ii];
1.80 + var size = Math.pow(2, colors.length - ii - 1);
1.81 + wtu.fillTexture(gl, tex, size, size, color.color, ii);
1.82 +}
1.83 +
1.84 +var loc = gl.getUniformLocation(program, "lod");
1.85 +
1.86 +for (var ii = 0; ii < colors.length; ++ii) {
1.87 + gl.uniform1f(loc, ii);
1.88 + var color = colors[ii];
1.89 + wtu.drawQuad(gl);
1.90 + wtu.checkCanvas(
1.91 + gl, color.color,
1.92 + "256x256 texture drawn to 256x256 dest with lod = " + ii +
1.93 + " should be " + color.name);
1.94 +}
1.95 +glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
1.96 +
1.97 +successfullyParsed = true;
1.98 +
1.99 +</script>
1.100 +<script>finishTest();</script>
1.101 +
1.102 +</body>
1.103 +</html>
1.104 +
1.105 +
