| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL canvas "image buffer" OOM during document paint test</title> |
| </head> |
| <body> |
| <!-- |
| At the time of writing printing or snapshotting would access the "image buffer" of the WebGL canvas. |
| This would leading to crash if the allocation was denied. |
| To ensure expected behavior, e.g. to observe the failure, the canvas should not be visible. |
| To assert this, use div with border as indicator. Background cannot be used as printing |
| disables the backgrounds and print-color-adjust: exact is not respected in |
| WTR printing mode. |
| --> |
| <div style="position: absolute; width: 300px; height: 150px; border:55px solid green;"></div> |
| <canvas style="position: absolute;" id="gl"></canvas> |
| </div> |
| <script> |
| "use strict"; |
| var canvasGL = document.getElementById('gl'); |
| let gl = canvasGL.getContext('webgl'); |
| gl.clearColor(0, 1, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| if (window.internals) |
| window.internals.setMaxCanvasPixelMemory(7); |
| if (window.testRunner) |
| testRunner.setPrinting(); |
| </script> |
| </body> |
| </html> |
