| Summary: | Cairo works strange with complex clip | ||
|---|---|---|---|
| Product: | cairo | Reporter: | Seongwon Cho <seongwon1.cho> |
| Component: | image backend | Assignee: | Chris Wilson <chris> |
| Status: | RESOLVED FIXED | QA Contact: | cairo-bugs mailing list <cairo-bugs> |
| Severity: | critical | ||
| Priority: | medium | CC: | michael.fu, psychon |
| Version: | 1.12.14 | ||
| Hardware: | All | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
codes to reproduce problem.
What is wrong and What I expected... Possible fix for this problem. |
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Could you please also tell us why the result is strange and what you would expect instead? Created attachment 76389 [details]
What is wrong and What I expected...
I attached new 5 png files.
1-clip.png is first clip in my sample.
2-clip.png is second clip in my sample.
intersect-clip.png is intersection of first & second clip.
What_I_expect.png is What I expected result of intersected clip
- Actually mask of Cairo.
wrong_result.png is current result of intersected clip(mask) with Cairo.
- You can find strange thin & transparent line below Trapezoida.
Thank you.
Created attachment 76401 [details] [review] Possible fix for this problem. Sorry, I didn't notice that line before. Via some printf-debugging I came up with the attached patch. It seems to fix this issue, but I am not really sure about this. Also, someone should make sure that a suitable test gets added to the test suite, I guess. Chris? :-) Thank you for your quick response. I will test it. Thans a lot. :) Fixed with commit 2170bdbb12f38e372ea2ce1c6492c60cb35f22e4. |
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Created attachment 75670 [details] codes to reproduce problem. Hi, Please find attached soruce code to produce problem. Actually Cairo works strange with complex clip. I have 2 clips which have different AA option. And When I call cairo_paint() I got strange result. If set both AA option makes same, problem is gone. I also attached the png file (strange result). Please check it! Thanks a lot.