content/canvas/test/webgl-conformance/conformance/rendering/gl-scissor-test.html@6474c204b198 (annotated)
content/canvas/test/webgl-conformance/conformance/rendering/gl-scissor-test.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>WebGL Scissor Test</title> |
| michael@0 | 11 | <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| michael@0 | 12 | <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script> |
| michael@0 | 13 | <script src="../../debug/webgl-debug.js"></script> |
| michael@0 | 14 | <script src="../../resources/js-test-pre.js"></script> |
| michael@0 | 15 | <script src="../resources/webgl-test-utils.js"></script> |
| michael@0 | 16 | </head> |
| michael@0 | 17 | <body> |
| michael@0 | 18 | <div id="description"></div> |
| michael@0 | 19 | <div id="console"></div> |
| michael@0 | 20 | <canvas id="canvas" width="2" height="2" style="width: 40px; height: 40px;"> </canvas> |
| michael@0 | 21 | <script> |
| michael@0 | 22 | description("Check if glScissor setting works."); |
| michael@0 | 23 | |
| michael@0 | 24 | debug(""); |
| michael@0 | 25 | debug("Canvas.getContext"); |
| michael@0 | 26 | |
| michael@0 | 27 | var wtu = WebGLTestUtils; |
| michael@0 | 28 | var gl = wtu.create3DContext(document.getElementById("canvas")); |
| michael@0 | 29 | if (!gl) { |
| michael@0 | 30 | testFailed("context does not exist"); |
| michael@0 | 31 | } else { |
| michael@0 | 32 | testPassed("context exists"); |
| michael@0 | 33 | |
| michael@0 | 34 | debug(""); |
| michael@0 | 35 | |
| michael@0 | 36 | gl.clearColor(0,0,0,0); |
| michael@0 | 37 | gl.clear(gl.COLOR_BUFFER_BIT); |
| michael@0 | 38 | |
| michael@0 | 39 | // clear a portion of our FBO |
| michael@0 | 40 | gl.enable(gl.SCISSOR_TEST); |
| michael@0 | 41 | gl.scissor(0, 0, 1, 1); |
| michael@0 | 42 | gl.clearColor(0,1,0,1); |
| michael@0 | 43 | gl.clear(gl.COLOR_BUFFER_BIT); |
| michael@0 | 44 | |
| michael@0 | 45 | var b = new Uint8Array(2 * 2 * 4); |
| michael@0 | 46 | gl.readPixels(0, 0, 2, 2, gl.RGBA, gl.UNSIGNED_BYTE, b); |
| michael@0 | 47 | |
| michael@0 | 48 | function checkPixel(b, x, y, color) { |
| michael@0 | 49 | var offset = (y * 2 + x) * 4; |
| michael@0 | 50 | var match = true; |
| michael@0 | 51 | for (var c = 0; c < 4; ++c) { |
| michael@0 | 52 | if (b[offset + c] != color[c] * 255) { |
| michael@0 | 53 | match = false; |
| michael@0 | 54 | break; |
| michael@0 | 55 | } |
| michael@0 | 56 | } |
| michael@0 | 57 | assertMsg(match, "pixel at " + x + ", " + y + " is expected value"); |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | checkPixel(b, 0, 0, [0, 1, 0, 1]); |
| michael@0 | 61 | checkPixel(b, 1, 0, [0, 0, 0, 0]); |
| michael@0 | 62 | checkPixel(b, 0, 1, [0, 0, 0, 0]); |
| michael@0 | 63 | checkPixel(b, 1, 1, [0, 0, 0, 0]); |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | debug(""); |
| michael@0 | 67 | successfullyParsed = true; |
| michael@0 | 68 | |
| michael@0 | 69 | </script> |
| michael@0 | 70 | <script>finishTest();</script> |
| michael@0 | 71 | |
| michael@0 | 72 | </body> |
| michael@0 | 73 | </html> |
