1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/conformance/textures/tex-sub-image-2d.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,100 @@
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 +<link rel="stylesheet" href="../../resources/js-test-style.css"/>
1.14 +<script src="../../resources/js-test-pre.js"></script>
1.15 +<script src="../resources/webgl-test.js"></script>
1.16 +<script src="../resources/webgl-test-utils.js"></script>
1.17 +<script id="fshader" type="x-shader/x-fragment">
1.18 +precision mediump float;
1.19 +
1.20 +uniform sampler2D tex;
1.21 +varying vec2 texCoord;
1.22 +
1.23 +void main()
1.24 +{
1.25 + float intensity = texture2D(tex, texCoord).a;
1.26 + gl_FragColor = vec4(intensity, intensity, intensity, 1.0);
1.27 +}
1.28 +</script>
1.29 +
1.30 +</head>
1.31 +<body>
1.32 +<canvas id="example" width="256px" height="1px"></canvas>
1.33 +<div id="description"></div>
1.34 +<div id="console"></div>
1.35 +<script>
1.36 +description('Tests texSubImage2D upload path from Uint8Array');
1.37 +
1.38 +var wtu = WebGLTestUtils;
1.39 +var canvas = document.getElementById("example");
1.40 +var gl = wtu.create3DContext(canvas);
1.41 +gl.disable(gl.DITHER);
1.42 +var program = wtu.setupProgram(
1.43 + gl,
1.44 + [wtu.setupSimpleTextureVertexShader(gl), "fshader"],
1.45 + ['vPosition', 'texCoord0']);
1.46 +wtu.setupUnitQuad(gl);
1.47 +var textureWidth = 256;
1.48 +var textureHeight = 1;
1.49 +
1.50 +textureLoc = gl.getUniformLocation(program, "tex");
1.51 +
1.52 +var texture = gl.createTexture();
1.53 +gl.bindTexture(gl.TEXTURE_2D, texture);
1.54 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
1.55 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
1.56 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
1.57 +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
1.58 +// Allocate the texture object
1.59 +gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, textureWidth, textureHeight, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
1.60 +// Prepare the image data
1.61 +var array = new Uint8Array(textureWidth);
1.62 +for (var i = 0; i < textureWidth; i++)
1.63 + array[i] = i;
1.64 +// Fill the texture object with data -- this is actually the code path being tested
1.65 +gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, gl.ALPHA, gl.UNSIGNED_BYTE, array);
1.66 +
1.67 +// Clear and set up
1.68 +gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
1.69 +gl.bindTexture(gl.TEXTURE_2D, texture);
1.70 +gl.useProgram(program);
1.71 +gl.uniform1i(textureLoc, 0);
1.72 +// Draw the texture to the frame buffer
1.73 +gl.drawArrays(gl.TRIANGLES, 0, 6);
1.74 +
1.75 +// Read back the frame buffer
1.76 +var buf = new Uint8Array(textureWidth * textureHeight * 4);
1.77 +gl.readPixels(0, 0, textureWidth, textureHeight, gl.RGBA, gl.UNSIGNED_BYTE, buf);
1.78 +
1.79 +// Verify the frame buffer's contents
1.80 +var passed = true;
1.81 +for (var i = 0; i < textureWidth; i++) {
1.82 + var val = i;
1.83 + if (buf[4 * i + 0] != val ||
1.84 + buf[4 * i + 1] != val ||
1.85 + buf[4 * i + 2] != val) {
1.86 + testFailed("pixel at (" + i + ", 0) was (" +
1.87 + buf[4 * i + 0] + ", " +
1.88 + buf[4 * i + 1] + ", " +
1.89 + buf[4 * i + 2] + "), should be (" +
1.90 + val + ", " + val + ", " + val + ")");
1.91 + passed = false;
1.92 + break;
1.93 + }
1.94 +}
1.95 +
1.96 +if (passed)
1.97 + testPassed("");
1.98 +
1.99 +successfullyParsed = true;
1.100 +</script>
1.101 +<script>finishTest();</script>
1.102 +</body>
1.103 +</html>
