https://bugs.freedesktop.org/show_bug.cgi?id=50657

Bug #: 50657 Summary: [Evergreen,GIT,Tiling?] Occasional invalid command stream and subsequent performance increase Classification: Unclassified Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: thomas.lindroth@gmail.com

Starting Warcraft 3 in Wine sometimes failes because of invalid command stream. It happens in about 10% of all startup attempts.

After a failed startup Warcraft normally starts fine again and with improved framerate. Normal framerate after clean reboot is 110fps and directly after error it jumps to 150fps. Other applications also get improved framerate. Street fighter 4 benchmark in wine goes from 50 to 61 and glxgears from 4,000 to 10,000. The increased performance lasts for about 2 min and drops back to normal after that. It will jump again next time the error is triggered. No rendering errors can be seen. No other applications besides war3 can trigger the failed command stream.

Dmesg reports: radeon 0000:01:00.0: evergreen_surface_value_conv_check:325 depth invalid array mode 15 radeon 0000:01:00.0: evergreen_cs_track_validate_depth:645 depth invalid (0xffffffff 0x00000000 0xffffffff) radeon 0000:01:00.0: evergreen_packet3_check:2015 invalid cmd stream Same message every time. No other error reported in dmesg or Xorg.log

Hardware is HD 6770. Using DDX,Mesa,libdrm from latest git. Kernel 3.4.0. "ColorTiling" "true" "ColorTiling2D" "true" "SwapbuffersWait" "false" "EnablePageFlip" "true" radeon.pcie_gen2=1

War3 is invoked as "vblank_mode=0 WINEDEBUG=fps wine war3.exe -opengl" in a wine virtual desktop.

The error might be build related. Building mesa with --enable-debug triggers the error more often it seems. Pipeing the output of wine to file also triggers the error.

Mesa built from gentoo ebuild ./configure --prefix=/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --disable-dependency-tracking --enable-dri --enable-glx --enable-texture-float --disable-debug --enable-egl --disable-gbm --disable-gles1 --disable-gles2 --enable-glx-tls --disable-osmesa --enable-asm --enable-shared-glapi --disable-xa --disable-xorg --with-dri-drivers= --with-gallium-drivers=,swrast,r600 --with-egl-platforms=x11 --enable-gallium-egl --disable-d3d1x --disable-gallium-g3dvl --enable-gallium-llvm --disable-openvg --disable-r600-llvm-compiler --disable-vdpau --disable-xvmc