| Summary: | Some axis-aligned paths are not filled | ||
|---|---|---|---|
| Product: | cairo | Reporter: | Krzysztof Kosiński <tweenk.pl> |
| Component: | image backend | Assignee: | Carl Worth <cworth> |
| Status: | RESOLVED FIXED | QA Contact: | cairo-bugs mailing list <cairo-bugs> |
| Severity: | critical | ||
| Priority: | medium | ||
| Version: | 1.10.2 | ||
| Hardware: | All | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
Reduced test case
Output of test case, cairo 1.10.2 |
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Created attachment 50605 [details]
Output of test case, cairo 1.10.2
I added your test case under a general BSD-ish licence, please notify me if you object: commit 8d91de49261662bc920739bbb91d22a49016eb81 Author: Krzysztof Kosiński <tweenk.pl@gmail.com> Date: Fri Aug 26 22:59:01 2011 +0100 test: Add test case from bug-40410 Exercises a case where we failed to fill a rectangle... That test case passes for the current master, so until proven otherwise (and we now have the test to do so!), I'm marking this as closed. |
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Created attachment 50603 [details] Reduced test case Attached reduced testcase. Expected result: filled red rect from about 10,10 to 290,100. Actual result: very thin red lines corresponding to antialiased pixels at the egdes of that rect. The bug appears to be triggered if: 1. There is more than one subpath 2. All subpaths are axis-aligned rectangles 3. Only one of the subpaths is within surface bounds Tweaking any of the coordinates so that there is at least one non-axis-aligned segment or removing the second subpath (the one that is outside the surface bounds) causes the bug to disappear.