| <!-- |
| |
| /* |
| ** Copyright (c) 2012 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
| ** copy of this software and/or associated documentation files (the |
| ** "Materials"), to deal in the Materials without restriction, including |
| ** without limitation the rights to use, copy, modify, merge, publish, |
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| ** The above copyright notice and this permission notice shall be included |
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| ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| */ |
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| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Scissor Test</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| <style> |
| canvas { |
| border: 1px solid #000; |
| width: 64px; |
| height: 64px; |
| } |
| </style> |
| </head> |
| <body> |
| <canvas id="canvas1" width="16" height="16"> </canvas> |
| <canvas id="canvas2" width="16" height="16"> </canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("Check if glScissor setting works."); |
| |
| var wtu = WebGLTestUtils; |
| |
| function test(canvas, attribs) { |
| var gl = wtu.create3DContext(canvas, attribs); |
| |
| function test(func) { |
| gl.disable(gl.SCISSOR_TEST); |
| gl.clearColor(0,0,0,0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| gl.enable(gl.SCISSOR_TEST); |
| |
| var size = 16; |
| for (var ii = 0; ii < size; ++ii) { |
| // clear a portion of the WebGL drawing buffer |
| gl.scissor(ii, ii, 1, 1); |
| func(); |
| } |
| |
| for (var ii = 0; ii < size; ++ii) { |
| wtu.checkCanvasRect(gl, 0, ii, ii, 1, [0, 0, 0, 0], "should be black"); |
| wtu.checkCanvasRect(gl, ii, ii, 1, 1, [0, 255, 0, 255], "should be green"); |
| wtu.checkCanvasRect(gl, ii + 1, ii, size - ii - 1, 1, [0, 0, 0, 0], "should be black"); |
| } |
| } |
| |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| debug(""); |
| debug("test with clear"); |
| test(function() { |
| gl.clearColor(0, 1, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| }); |
| |
| wtu.setupColorQuad(gl); |
| |
| debug(""); |
| debug("test with draw"); |
| test(function() { |
| wtu.drawFloatColorQuad(gl, [0, 1, 0, 1]); |
| }); |
| |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); |
| } |
| } |
| |
| debug("test antialias: false"); |
| test(document.getElementById("canvas1"), {antialias: false}); |
| |
| debug(""); |
| debug("test antialias: true"); |
| test(document.getElementById("canvas2"), {antialias: true}); |
| |
| debug(""); |
| var successfullyParsed = true; |
| |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
