| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!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="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <canvas id="canvas2d_0" width="128" height="128"> </canvas> |
| <canvas id="canvas2d_1" width="400" height="400"> </canvas> |
| <canvas id="canvas2d_2" width="128" height="128"> </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 when drawing the same content."); |
| |
| 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("Checking drawing the same WebGL content to HW accelerated canvas and SW Canvases"); |
| debug(""); |
| var color = [[0.25, 0.5, 0.75, 1], [1, 0, 0, 1], [1, 0, 1, 1]]; |
| var colorValue = [[64, 128, 192, 255], [255, 0, 0, 255], [255, 0, 255, 255]]; |
| for (var count = 0; count < 10; count ++) { |
| for (var i = 0; i < 3; i++) { |
| gl.clearColor(color[i][0], color[i][1], color[i][2], color[i][3]); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| ctx2d[0].drawImage(canvas, 0, 0, canvas2d[0].width, canvas2d[0].height); |
| ctx2d[1].drawImage(canvas, 0, 0, canvas2d[1].width, canvas2d[1].height); |
| ctx2d[2].drawImage(canvas, 0, 0, canvas2d[2].width, canvas2d[2].height); |
| wtu.checkCanvasRect(ctx2d[0], 0, 0, canvas2d[0].width, canvas2d[0].height, colorValue[i], |
| "drawImage: Should be (" + colorValue[i][0] + "," + colorValue[i][1] + |
| "," + colorValue[i][2] + "," + colorValue[i][3] + ").", 2); |
| wtu.checkCanvasRect(ctx2d[1], 0, 0, canvas2d[1].width, canvas2d[1].height, colorValue[i], |
| "drawImage: Should be (" + colorValue[i][0] + "," + colorValue[i][1] + |
| "," + colorValue[i][2] + "," + colorValue[i][3] + ").", 2); |
| wtu.checkCanvasRect(ctx2d[2], 0, 0, canvas2d[2].width, canvas2d[2].height, colorValue[i], |
| "drawImage: Should be (" + colorValue[i][0] + "," + colorValue[i][1] + |
| "," + colorValue[i][2] + "," + colorValue[i][3] + ").", 2); |
| } |
| } |
| |
| err = gl.getError(); |
| debug(""); |
| } |
| finishTest(); |
| </script> |
| |
| </body> |
| </html> |
