drm_hwcomposer: filter out empty or invalid rects.
We can safely ignore zero-area rects because they do not affect the outcome
of the separate_rects() function. Furthermore the line sweep algorithm would
break when two identical START or END events are added to the same set.
Additionally any rect with |left| greater than |right| or |top| greater than
|bottom| is invalid and shall be ignored.
Added test cases with empty and invalid rects. This case would have crashed (or
failed the assert in a debug build) without this fix.
TEST=verify no crash with Photos app
1 file changed