[ILK] unigine-sanctuary performance reduced by 98%
Submitted by libo
Assigned to Intel 3D Bugs Mailing List
Description
System Environment:
Hardware: SNB-Hunoriver Libdrm:(master)libdrm-2.4.39-20-ga4cb7233 Mesa: (master)53e36d33 Kernel: (drm-intel-nightly) 18986b8d32b30a9c986c042280aa9127b0f809e9
Bug detailed description:
unigine-sanctruary has 98% regression caused by Mesa. I have bisected it and found the following mesa commit is first bad commit: commit 7139ab80 Author: Eric Anholt eric@anholt.net Date: Wed Aug 8 09:03:26 2012 -0700 i965: Fix rendering to small mipmaps of depth/stencil buffers using a temp mt. Fixes 51 piglit tests (fbo-clear-formats, and most of the remaining failures in depthstencil).
Performance:
the performacne results of Nexuiz tested on SNB with (master)53e36d33 is 0.156 fps with (master)4004620d is 8.69 fps.
Reproduce steps:
- xinit& 2.gnome-session 3.vblank_mode=0 ./bin/Sanctuary -video_app opengl -data_path ../ -sound_app null -system_script sanctuary/unigine.cpp -engine_config ../data/unigine.cfg -video_mode -1 -video_fullscreen 1 -extern_define PHORONIX -video_width 1600 -video_height 900