https://bugs.freedesktop.org/show_bug.cgi?id=31400
Summary: [RV740] Mipmapping broken in drm-radeon-next /
drm-next
Product: DRI
Version: DRI CVS
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
Hey there,
I already partially explained this in bug #31046.
With a recent drm-radeon-next or also drm-next the mipmaps are broken with both
r600c and r600g.
My hardware:
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 4770 [RV740]
libdrm, xf86-video-ati and mesa are all git master tip.
Today I found some time to bisect drm-next and this commit introduces the
mipmap issue:
881fe6c1d06bf49f4ab7aef212cdaf66bd059614
drm/radeon/kms: properly compute group_size on 6xx/7xx
Needed for tiled surfaces.
-------------------------------
Link:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commit;h=881fe6c1d06bf49f4ab7aef212cdaf66bd059614
Looks like tiling_group_size has to be 256 on my hardware.
Greets,
Tobias
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