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| (Empty) |
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>WebGL required buffer clear behaviour test</title> | |
| 5 <link rel="stylesheet" href="../resources/js-test-style.css"/> | |
| 6 <script src="../resources/js-test-pre.js"></script> | |
| 7 <script src="resources/webgl-test.js"> </script> | |
| 8 <script src="resources/webgl-test-utils.js"> </script> | |
| 9 <style type="text/css"> | |
| 10 body { | |
| 11 height: 3000px; | |
| 12 } | |
| 13 </style> | |
| 14 <script type="text/javascript"> | |
| 15 | |
| 16 var iter = 0; | |
| 17 var gl; | |
| 18 | |
| 19 var wtu = WebGLTestUtils; | |
| 20 | |
| 21 function checkPixel(gl, x, y, c) { | |
| 22 var buf = new Uint8Array(4); | |
| 23 gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf); | |
| 24 | |
| 25 return buf[0] == c[0] && | |
| 26 buf[1] == c[1] && | |
| 27 buf[2] == c[2] && | |
| 28 buf[3] == c[3]; | |
| 29 } | |
| 30 | |
| 31 function timer() { | |
| 32 if (iter == 0) { | |
| 33 // some random hacky stuff to make sure that we get a compositing step | |
| 34 window.scrollBy(0, 10); | |
| 35 window.scrollBy(0, -10); | |
| 36 iter++; | |
| 37 | |
| 38 setTimeout(timer, 500); | |
| 39 } else if (iter == 1) { | |
| 40 // scissor was set earlier | |
| 41 gl.clearColor(0, 0, 1, 1); | |
| 42 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 43 | |
| 44 wtu.checkCanvasRect(gl, 0, 10, 10, 10, [0, 0, 255, 255], "cleared corner
should be blue, stencil should be preserved"); | |
| 45 wtu.checkCanvasRect(gl, 0, 0, 10, 10, [0, 0, 0, 0], "remainder of buffer
should be cleared"); | |
| 46 | |
| 47 finishTest(); | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 function go() { | |
| 52 description("This test ensures WebGL implementations correctly clear the dra
wing buffer on composite if preserveDrawingBuffer is false."); | |
| 53 | |
| 54 debug(""); | |
| 55 | |
| 56 gl = create3DContext(document.getElementById("c")); | |
| 57 if (!gl) { | |
| 58 finishTest(); | |
| 59 return; | |
| 60 } | |
| 61 | |
| 62 shouldBeTrue('gl.getContextAttributes().preserveDrawingBuffer == false'); | |
| 63 | |
| 64 gl.clearColor(1, 0, 0, 1); | |
| 65 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT); | |
| 66 | |
| 67 // enable scissor here, before compositing, to make sure it's correctly | |
| 68 // ignored and restored | |
| 69 gl.scissor(0, 10, 10, 10); | |
| 70 gl.enable(gl.SCISSOR_TEST); | |
| 71 | |
| 72 setTimeout(timer, 500); | |
| 73 } | |
| 74 | |
| 75 window.addEventListener("load", go, false); | |
| 76 | |
| 77 successfullyParsed = true; | |
| 78 </script> | |
| 79 </head> | |
| 80 <body> | |
| 81 <div id="description"></div> | |
| 82 <canvas width="20" height="20" style="border: 1px solid blue;" id="c"></canvas> | |
| 83 <div id="console"></div> | |
| 84 </body> | |
| 85 </html> | |
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Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/