| Summary: | [sna g33 ddx] Qt looks ugly at 16bpp (and 10+bpc) | ||||||
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| Product: | xorg | Reporter: | Jiri Slaby <jirislaby> | ||||
| Component: | Driver/intel | Assignee: | Chris Wilson <chris> | ||||
| Status: | RESOLVED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | normal | ||||||
| Priority: | medium | ||||||
| Version: | git | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| See Also: | https://bugreports.qt-project.org/browse/QTBUG-25198 | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
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Description
Jiri Slaby
2013-02-25 12:35:55 UTC
Hmm, ok that's not the expected artifact from depth 16 rendering... They are genuine bugs in the rendering pipeline. (The mach bands are, except for the discoloration.) You can either revert that patch or use -depth 24 or Section "Screen" DefaultDepth 24 whilst I work out why it appears so broken. (In reply to comment #2) > (The mach bands are, except for the discoloration.) Note that the invalid colors are exactly what I see in KVM virtual machine with cirrus graphics, KDE and 16bit depth. If I use -depth 24 there, there are no more invalid colors... So this is perhaps a Mesa/KDE/or some upper layer bugs. (In reply to comment #4) > (In reply to comment #2) > > (The mach bands are, except for the discoloration.) > > Note that the invalid colors are exactly what I see in KVM virtual machine > with cirrus graphics, KDE and 16bit depth. If I use -depth 24 there, there > are no more invalid colors... So this is perhaps a Mesa/KDE/or some upper > layer bugs. And yes, QT is broken with 16bit depth: https://bugzilla.redhat.com/show_bug.cgi?id=810161 https://bugs.kde.org/show_bug.cgi?id=297588 Oh crumbs. And Qt doesn't work at high bit depths either (> 8bpc). However, if the outcome is that we get native graphics back for Qt rather than its slow raster engine, win-win ;-) commit f9f2b5152f988d4b15f773354f3fadaff02cd3d7 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Sun Mar 3 11:10:51 2013 +0000 sna: Undo preferred depth for gen3 Mesa is buggy. Qt is buggy. Everything is buggy. References: https://bugs.freedesktop.org/show_bug.cgi?id=61441 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk |
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