Chromium Code Reviews Chromium Code Reviews
Issue 750273003:
canvas: calling toDataURL without context doesn't create a buffer of canvas 2d. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master| Index: LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d-after-to-data-url-without-context.html |
| diff --git a/LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d-after-to-data-url-without-context.html b/LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d-after-to-data-url-without-context.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..0b8d927df4665f414102f0650c4d670d895f5bcb |
| --- /dev/null |
| +++ b/LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d-after-to-data-url-without-context.html |
| @@ -0,0 +1,39 @@ |
| +<!DOCTYPE html> |
| +<html> |
| +<body> |
| +<span id="description" style="color: white"> |
| +Everything is same to draw-webgl-to-canvas-2d.html except for calling |
| +reduntant toDataURL(). |
|
Justin Novosad
2014/11/24 22:27:57
"redundant"
|
| +Canvas spec allows to call toDataURL() without a context. Some bad things |
| +can happen if we call toDataURL() without a context and then create a context |
| +and then call toDataURL() again. |
| +</span> |
| +<canvas id="preserve-canvas3d" width="100" height="100"></canvas> |
| +<canvas id="preserve-canvas2d" width="100" height="100"></canvas> |
| +<canvas id="nonpreserve-canvas3d" width="100" height="100"></canvas> |
| +<canvas id="nonpreserve-canvas2d" width="100" height="100"></canvas> |
| +<script src="../../../resources/js-test.js"></script> |
| +<script src="resources/draw-webgl-to-canvas-2d.js"></script> |
| +<script> |
| +function createContexts() { |
| + var preserve_canvas2d = document.getElementById("preserve-canvas2d"); |
| + preserve_canvas2d.toDataURL(); |
| + preserve_ctx2D = preserve_canvas2d.getContext("2d"); |
| + preserve_canvas2d.toDataURL(); |
| + preserve_canvas3D = document.getElementById('preserve-canvas3d'); |
| + preserve_canvas3D.toDataURL(); |
| + preserve_gl = preserve_canvas3D.getContext('webgl', {'preserveDrawingBuffer': true}); |
| + preserve_canvas3D.toDataURL(); |
| + |
| + var nonpreserve_canvas2d = document.getElementById("nonpreserve-canvas2d"); |
| + nonpreserve_canvas2d.toDataURL(); |
| + nonpreserve_ctx2D = nonpreserve_canvas2d.getContext("2d"); |
| + nonpreserve_canvas2d.toDataURL(); |
| + nonpreserve_canvas3D = document.getElementById('nonpreserve-canvas3d'); |
| + nonpreserve_canvas3D.toDataURL(); |
| + nonpreserve_gl = nonpreserve_canvas3D.getContext('webgl', {'preserveDrawingBuffer': false}); |
| + nonpreserve_canvas3D.toDataURL(); |
| +} |
| +</script> |
| +</body> |
| +</html> |
