| <!-- This is a test for crbug.com/392765, in which Copy image for |
| WebGL elements were crashing. Must be run with the threaded |
| compositor enabled. --> |
| <head> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| |
| function main() |
| { |
| if (!window.testRunner) { |
| testFailed("Requires window.testRunner"); |
| } else { |
| testRunner.waitUntilDone(); |
| testRunner.dumpAsText(); |
| window.requestAnimationFrame(initTest); |
| } |
| } |
| |
| var tolerance = 1; |
| |
| function initTest() { |
| var canvas = document.getElementById("c"); |
| var gl = canvas.getContext("webgl"); |
| if (!gl) { |
| testFailed("Test requires WebGL"); |
| testRunner.notifyDone(); |
| return; |
| } |
| |
| gl.clearColor(1, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| window.requestAnimationFrame(runTest); |
| } |
| |
| function runTest() { |
| try { |
| testRunner.copyImageThen(50, 50, completionCallback); |
| } catch (e) { |
| debug('error in runTest'); |
| debug(e); |
| testRunner.notifyDone(); |
| } |
| } |
| |
| var pixel; |
| function fetchPixelAt(x, y, width, height, snapshot) { |
| var data = new Uint8Array(snapshot); |
| pixel = [ |
| data[4 * (width * y + x) + 0], |
| data[4 * (width * y + x) + 1], |
| data[4 * (width * y + x) + 2], |
| data[4 * (width * y + x) + 3] |
| ]; |
| } |
| |
| function completionCallback(width, height, snapshot) { |
| try { |
| fetchPixelAt(50, 50, width, height, snapshot); |
| shouldBeCloseTo('pixel[0]', 255, tolerance); |
| shouldBeCloseTo('pixel[1]', 0, tolerance); |
| shouldBeCloseTo('pixel[2]', 0, tolerance); |
| } catch (e) { |
| debug('error in completionCallback'); |
| debug(e); |
| testRunner.notifyDone(); |
| return; |
| } |
| testRunner.notifyDone(); |
| } |
| |
| main(); |
| </script> |
| </head> |
| <body> |
| <canvas id="c" width="200" height="200" class="nomargin"></canvas> |
| <div id="console"></div> |
| </body> |
