Open Bug 1118392 Opened 8 years ago Updated 8 years ago
Reftests can not detect failures dependent on a non-zero device offset
When reftests capture images for comparison, they are rasterized with a device offset of (0,0) resulting in false positives for bugs that only occur with a non-zero device offset. This could be addressed by more accurately capturing the last rendered frame without re-rasterization or by including chrome in the reftest window that would introduce a device offset in the rasterization. Bug 1067286 is an example of a regression that could not be tested due to this limitation.
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