Bug 42821

Summary:	Reset clip region when writing fallback results
Product:	cairo	Reporter:	Alexander Larsson <alexl>
Component:	win32 backend	Assignee:	cairo-bugs mailing list <cairo-bugs>
Status:	RESOLVED FIXED	QA Contact:	cairo-bugs mailing list <cairo-bugs>
Severity:	blocker
Priority:	medium
Version:	1.10.3
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:
Bug Blocks:	44797
Attachments:	Reset the clip when drawing

Description Alexander Larsson 2011-11-11 07:27:36 UTC

Created attachment 53402 [details] [review]
Reset the clip when drawing

The win32 backend doesn't properly remove previous clip regions (set by e.g. show_glyphs) in release_dest_image, which caused loss of fallback rendering results.

Comment 1 Alexander Larsson 2011-11-11 07:29:54 UTC

Also, i'm not sure how this is supposed to work exactly, but it *seems* to me that show_glyphs doesn't correctly reset the clip region if passed in a NULL clip, but there is some complexity there that i don't understand, so i left this alone in my patch.

Comment 2 Alexander Larsson 2011-11-11 07:40:16 UTC

master has similar issues, but its in _cairo_win32_surface_unmap_image there.

Comment 3 Chris Wilson 2012-02-15 06:43:52 UTC

commit ae3319890eacd1c8282ca6df7b263ac74abb5f8d
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Feb 12 11:25:07 2012 +0000

    win32: Rebase on the new compositor infrastructure
    
    Try and undo all the damage that has acrued over the years by plugging
    into the compositor pipeline.
    
    References: https://bugs.freedesktop.org/show_bug.cgi?id=42739
    References: https://bugs.freedesktop.org/show_bug.cgi?id=42821
    References: https://bugs.freedesktop.org/show_bug.cgi?id=33081
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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