content/canvas/test/webgl-conformance/conformance/glsl/variables/gl-frontfacing.html@6474c204b198 (annotated)
content/canvas/test/webgl-conformance/conformance/glsl/variables/gl-frontfacing.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | <!-- |
| michael@0 | 2 | Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| michael@0 | 3 | Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 4 | found in the LICENSE file. |
| michael@0 | 5 | --> |
| michael@0 | 6 | <!DOCTYPE html> |
| michael@0 | 7 | <html> |
| michael@0 | 8 | <head> |
| michael@0 | 9 | <meta charset="utf-8"> |
| michael@0 | 10 | <title>gl-fragcoord Test</title> |
| michael@0 | 11 | <link rel="stylesheet" href="../../../resources/js-test-style.css"/> |
| michael@0 | 12 | <script src="../../../resources/js-test-pre.js"></script> |
| michael@0 | 13 | <script src="../../resources/webgl-test.js"> </script> |
| michael@0 | 14 | <script src="../../resources/webgl-test-utils.js"> </script> |
| michael@0 | 15 | </head> |
| michael@0 | 16 | <body> |
| michael@0 | 17 | <canvas id="example" width="32" height="32"> |
| michael@0 | 18 | </canvas> |
| michael@0 | 19 | <div id="description"></div> |
| michael@0 | 20 | <div id="console"></div> |
| michael@0 | 21 | <script id="vshader" type="x-shader/x-vertex"> |
| michael@0 | 22 | attribute vec4 vPosition; |
| michael@0 | 23 | void main() |
| michael@0 | 24 | { |
| michael@0 | 25 | gl_Position = vPosition; |
| michael@0 | 26 | } |
| michael@0 | 27 | </script> |
| michael@0 | 28 | |
| michael@0 | 29 | <script id="fshader" type="x-shader/x-fragment"> |
| michael@0 | 30 | precision mediump float; |
| michael@0 | 31 | void main() |
| michael@0 | 32 | { |
| michael@0 | 33 | gl_FragColor = vec4( |
| michael@0 | 34 | gl_FrontFacing ? 1.0 : 0.0, |
| michael@0 | 35 | gl_FrontFacing ? 0.0 : 1.0, |
| michael@0 | 36 | 0, |
| michael@0 | 37 | 1); |
| michael@0 | 38 | } |
| michael@0 | 39 | </script> |
| michael@0 | 40 | |
| michael@0 | 41 | <script> |
| michael@0 | 42 | function init() |
| michael@0 | 43 | { |
| michael@0 | 44 | if (window.initNonKhronosFramework) { |
| michael@0 | 45 | window.initNonKhronosFramework(false); |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | description("tests gl_FrontFacing"); |
| michael@0 | 49 | |
| michael@0 | 50 | wtu = WebGLTestUtils; |
| michael@0 | 51 | gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1); |
| michael@0 | 52 | |
| michael@0 | 53 | var gridRes = 4; |
| michael@0 | 54 | wtu.setupQuad(gl, gridRes, 0, true); |
| michael@0 | 55 | |
| michael@0 | 56 | gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| michael@0 | 57 | gl.drawElements(gl.TRIANGLES, gridRes * gridRes * 6, gl.UNSIGNED_SHORT, 0); |
| michael@0 | 58 | wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from draw"); |
| michael@0 | 59 | |
| michael@0 | 60 | var step = 32 / gridRes; |
| michael@0 | 61 | var halfStep = step / 2; |
| michael@0 | 62 | var quarterStep = halfStep / 2; |
| michael@0 | 63 | for (var xx = 0; xx < 32; xx += step) { |
| michael@0 | 64 | for (var yy = 0; yy < 32; yy += step) { |
| michael@0 | 65 | for (var ii = 0; ii < 2; ++ii) { |
| michael@0 | 66 | var color = [ |
| michael@0 | 67 | ii == 0 ? 255 : 0, |
| michael@0 | 68 | ii == 0 ? 0 : 255, |
| michael@0 | 69 | 0 |
| michael@0 | 70 | ]; |
| michael@0 | 71 | var msg = "should be " + color; |
| michael@0 | 72 | wtu.checkCanvasRect( |
| michael@0 | 73 | gl, |
| michael@0 | 74 | xx + quarterStep + halfStep * ii, |
| michael@0 | 75 | yy + quarterStep + halfStep * ii, |
| michael@0 | 76 | 1, 1, color, msg, 4); |
| michael@0 | 77 | } |
| michael@0 | 78 | } |
| michael@0 | 79 | } |
| michael@0 | 80 | } |
| michael@0 | 81 | |
| michael@0 | 82 | init(); |
| michael@0 | 83 | successfullyParsed = true; |
| michael@0 | 84 | </script> |
| michael@0 | 85 | <script>finishTest();</script> |
| michael@0 | 86 | |
| michael@0 | 87 | </body> |
| michael@0 | 88 | </html> |
