content/canvas/test/webgl-conformance/conformance/renderbuffers/renderbuffer-initialization.html@deefc01c0e14 (annotated)
content/canvas/test/webgl-conformance/conformance/renderbuffers/renderbuffer-initialization.html
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| 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 | <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| michael@0 | 11 | <script src="../../resources/js-test-pre.js"></script> |
| michael@0 | 12 | <script src="../resources/webgl-test.js"></script> |
| michael@0 | 13 | <script src="../resources/webgl-test-utils.js"></script> |
| michael@0 | 14 | </head> |
| michael@0 | 15 | <body> |
| michael@0 | 16 | <canvas id="testbed" width="400" height="400" style="width: 40px; height: 40px;"></canvas> |
| michael@0 | 17 | <div id="description"></div> |
| michael@0 | 18 | <div id="console"></div> |
| michael@0 | 19 | <script> |
| michael@0 | 20 | var wtu = WebGLTestUtils; |
| michael@0 | 21 | description('Verify renderbuffers are initialized to 0 before being read in WebGL'); |
| michael@0 | 22 | |
| michael@0 | 23 | var gl = wtu.create3DContext("testbed"); |
| michael@0 | 24 | if (!gl) { |
| michael@0 | 25 | testFailed('canvas.getContext() failed'); |
| michael@0 | 26 | } else { |
| michael@0 | 27 | // Set the clear color to green. It should never show up. |
| michael@0 | 28 | gl.clearColor(0, 1, 0, 1); |
| michael@0 | 29 | |
| michael@0 | 30 | runTest(gl, gl.canvas.width, gl.canvas.height, 0); |
| michael@0 | 31 | runTest(gl, gl.canvas.width, gl.canvas.height, 1); |
| michael@0 | 32 | runTest(gl, gl.canvas.width, gl.canvas.height, 0); |
| michael@0 | 33 | runTest(gl, gl.canvas.width, gl.canvas.height, 1); |
| michael@0 | 34 | |
| michael@0 | 35 | // Testing buffer clearing won't change the clear values. |
| michael@0 | 36 | var clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE); |
| michael@0 | 37 | shouldBe("clearColor", "[0, 1, 0, 1]"); |
| michael@0 | 38 | glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | function runTest(gl, width, height, order) |
| michael@0 | 42 | { |
| michael@0 | 43 | wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0], |
| michael@0 | 44 | "internal buffers have been initialized to 0"); |
| michael@0 | 45 | |
| michael@0 | 46 | // fill the back buffer so we know that reading below happens from |
| michael@0 | 47 | // the renderbuffer. |
| michael@0 | 48 | gl.clear(gl.COLOR_BUFFER_BIT); |
| michael@0 | 49 | |
| michael@0 | 50 | var fbo = gl.createFramebuffer(); |
| michael@0 | 51 | gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); |
| michael@0 | 52 | var colorbuffer = gl.createRenderbuffer(); |
| michael@0 | 53 | gl.bindRenderbuffer(gl.RENDERBUFFER, colorbuffer); |
| michael@0 | 54 | switch (order) { |
| michael@0 | 55 | case 0: |
| michael@0 | 56 | allocStorage(width, height); |
| michael@0 | 57 | attachBuffer(colorbuffer); |
| michael@0 | 58 | break; |
| michael@0 | 59 | case 1: |
| michael@0 | 60 | attachBuffer(colorbuffer); |
| michael@0 | 61 | allocStorage(width, height); |
| michael@0 | 62 | break; |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | function allocStorage(width, height) { |
| michael@0 | 66 | gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, width, height); |
| michael@0 | 67 | glErrorShouldBe(gl, gl.NO_ERROR, 'should be no error after renderbufferStorage(internalformat = RGBA4).'); |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | function attachBuffer(colorbuffer) { |
| michael@0 | 71 | gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, colorbuffer); |
| michael@0 | 72 | } |
| michael@0 | 73 | |
| michael@0 | 74 | if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) { |
| michael@0 | 75 | testFailed('Framebuffer incomplete.'); |
| michael@0 | 76 | return; |
| michael@0 | 77 | } |
| michael@0 | 78 | |
| michael@0 | 79 | wtu.checkCanvasRect(gl, 0, 0, width, height, [0,0,0,0], |
| michael@0 | 80 | "user buffers have been initialized to 0"); |
| michael@0 | 81 | |
| michael@0 | 82 | gl.deleteFramebuffer(fbo); |
| michael@0 | 83 | gl.deleteRenderbuffer(colorbuffer); |
| michael@0 | 84 | |
| michael@0 | 85 | // this clear should not matter we are about to resize |
| michael@0 | 86 | gl.clear(gl.COLOR_BUFFER_BIT); |
| michael@0 | 87 | |
| michael@0 | 88 | gl.canvas.width += 1; |
| michael@0 | 89 | gl.canvas.height += 1; |
| michael@0 | 90 | |
| michael@0 | 91 | debug(''); |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | successfullyParsed = true; |
| michael@0 | 95 | </script> |
| michael@0 | 96 | <script>finishTest();</script> |
| michael@0 | 97 | </body> |
| michael@0 | 98 | </html> |
