Bug 28760 - Patterns created from surface lose alpha channel when set EXTEND_REFLECT
Summary: Patterns created from surface lose alpha channel when set EXTEND_REFLECT
Status: RESOLVED FIXED
Alias: None
Product: cairo
Classification: Unclassified
Component: general (show other bugs)
Version: 1.8.8
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Carl Worth
QA Contact: cairo-bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-06-25 14:28 UTC by Ruslan Kabatsayev
Modified: 2010-06-25 14:47 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
Test case (2.45 KB, text/x-csrc)
2010-06-25 14:28 UTC, Ruslan Kabatsayev 		Details
Screenshot (7.84 KB, image/png)
2010-06-25 14:29 UTC, Ruslan Kabatsayev 		Details
View All

Description Ruslan Kabatsayev 2010-06-25 14:28:06 UTC 
Created attachment 36502 [details]
Test case

Setting CAIRO_EXTEND_REFLECT on a pattern created via cairo_pattern_create_for_surface() results in loss of alpha channel. See the test attached - top left quadrant of the window is painted using CAIRO_EXTEND_REFLECT. One would expect the same background as with other extend modes, but it is black instead. Some experimenting shows that the pattern is blended with black instead of being blended with target surface background, not just loses the alpha channel.
Comment 1 Ruslan Kabatsayev 2010-06-25 14:29:21 UTC 
Created attachment 36503 [details]
Screenshot

Here's how it looks
Comment 2 Ruslan Kabatsayev 2010-06-25 14:47:36 UTC 
Fixed as of 1.9.8

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.