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| ** Copyright (c) 2013 The Khronos Group Inc. |
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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Canvas Conformance Tests</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <canvas id="canvas2d_0" width="400" height="400"> </canvas> |
| <canvas id="canvas2d_1" width="400" height="400"> </canvas> |
| <canvas id="canvas2d_2" width="400" height="400"> </canvas> |
| <canvas id="webgl" width="400" height="400"> </canvas> |
| <script> |
| "use strict"; |
| |
| description("This test ensures WebGL implementations interact correctly with the canvas 2D drawImage call."); |
| |
| var err; |
| var wtu = WebGLTestUtils; |
| |
| var canvas2d = []; |
| var ctx2d = []; |
| for (var i = 0; i < 3; i ++) { |
| canvas2d[i] = document.getElementById("canvas2d_" + i); |
| ctx2d[i] = canvas2d[i].getContext("2d"); |
| } |
| |
| var canvas = document.getElementById("webgl"); |
| var gl = wtu.create3DContext(canvas); |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| debug(""); |
| debug("Checking canvas and WebGL drawImage interaction"); |
| for (var count = 0; count < 10; count ++) { |
| gl.clearColor(0.25, 0.5, 0.75, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| ctx2d[0].drawImage(canvas, 0, 0, canvas2d[0].width, canvas2d[0].height); |
| |
| gl.clearColor(1, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| ctx2d[1].drawImage(canvas, 0, 0, canvas2d[1].width, canvas2d[1].height); |
| |
| gl.clearColor(1, 0, 1, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| ctx2d[2].drawImage(canvas, 0, 0, canvas2d[2].width, canvas2d[2].height); |
| |
| gl.clearColor(1, 1, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| wtu.checkCanvasRect(ctx2d[0], 0, 0, canvas2d[0].width, canvas2d[0].height, [64, 128, 192, 255], |
| "drawImage: Should be [64, 128, 192, 255]", 2); |
| wtu.checkCanvasRect(ctx2d[1], 0, 0, canvas2d[1].width, canvas2d[1].height, [255, 0, 0, 255], |
| "drawImage: Should be [255, 0, 0, 255]", 2); |
| wtu.checkCanvasRect(ctx2d[2], 0, 0, canvas2d[2].width, canvas2d[2].height, [255, 0, 255, 255], |
| "drawImage: Should be [255, 0, 255, 255]", 2); |
| } |
| |
| err = gl.getError(); |
| debug(""); |
| finishTest(); |
| } |
| </script> |
| |
| </body> |
| </html> |
