Bug 19631

Summary:	cairo_show_glyphs doesn't work on pattern/gradients for NVidia
Product:	cairo	Reporter:	Dirk Schulze <vbs85>
Component:	xlib backend	Assignee:	Carl Worth <cworth>
Status:	RESOLVED NOTOURBUG	QA Contact:	cairo-bugs mailing list <cairo-bugs>
Severity:	normal
Priority:	medium
Version:	1.8.0
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	text-pattern text-transform

Description Dirk Schulze 2009-01-17 10:59:14 UTC

cairo_show_glyphs doesn't work correctly for the NVidia driver 180.22 (original driver from nvidia.com). Haven't test it with other versions.
Ther are no problems with cairo_show_glyphs and a solid color but if you use a pattern or gradient, the complete text is filled with a random color, out of the color-set of the pattern or gradient.

Comment 1 Dirk Schulze 2009-01-17 11:09:31 UTC

ouput of the cairo test system:
 Failed tests:
      extend-reflect: ps2 ps3 
      extend-reflect-similar: ps2 ps3 
      meta-surface-pattern: xlib 
      smask: xlib xlib-fallback 
      smask-text: xlib xlib-fallback 
      text-pattern: xlib xlib-fallback 
      text-transform: xlib xlib-fallback 
      user-font-proxy: ps2 ps3

Comment 2 Dirk Schulze 2009-01-17 11:11:46 UTC

Created attachment 22066 [details]
text-pattern

text-pattern-xlib-argb32-out.png

Comment 3 Dirk Schulze 2009-01-17 11:13:29 UTC

Created attachment 22067 [details]
text-transform

text-transform-xlib-rgb24-out.png

Comment 4 Chris Wilson 2009-02-12 11:13:10 UTC

The consensus is that we do not want to add workarounds for bugs in particular X servers and/or drivers. That road is long and gnarly.

But thank you for taking the time to report the bug -- it appears that my fears that this would be widespread and afflict many more people were unfounded.

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