Bug 34778

Summary: [r600g, wine] FEAR / depth-stencil rendering triggers SW fallback
Product: DRI Reporter: Tobias Jakobi <liquid.acid>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: DRI git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
URL: http://www.gamershell.com/download_10167.shtml
Whiteboard:
i915 platform: i915 features:

Description Tobias Jakobi 2011-02-26 12:58:54 UTC 
System:
ATI Technologies Inc Radeon HD 4770 [RV740]

drm-radeon-testing kernel (git tip)
libdrm, mesa and xf86-video-intel git master
xorg-server-1.9.4

mesa git master = 99b9019716d0a5cfc7438677d2e11090d676c054

Hi there,

this is sort of copy&paste from bug #34674. The problem (fallback to software rendering) described there also happens on r600g, and probably (judging from the state tracker code) on all gallium drivers.

Anyway, from profiling I found out that pipe_put_tile_z and pipe_get_tile_z consume like 90% of the CPU time. These two get called by fallback_copy_texsubimage, which is called from st_copy_texsubimage.

Greets,
Tobias
Comment 1 Tobias Jakobi 2011-05-06 17:41:49 UTC 
Still happens with mesa git master (6bb230970cb2da5e3fe9bc63991b4b5f92445e92)
Comment 2 Tobias Jakobi 2011-07-11 17:08:19 UTC 
Can no longer reproduce this with up-to-date mesa git master.

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.