MesaFX runtime tuning The following environment variables affect MesaFX 0.51f and above. Those that affect Glide only, are beyond the scope of this file. The entries that don't have a "Value" field, can have any value whatsoever ex: set MESA_FX_IGNORE_TEXUS2=y "Note" (*) means that the environment variable affects Glide, too; also, if the var is not found in the environment, it is searched in windoze registry. "Note" (!) means that the environment variable is not working as expected; may have undefined effects, might have effects only at Glide level or might not have any effect whatsoever. Caveat emptor! Those are to be revised soon. It is recommended to leave the envvars alone, so that Mesa/Glide will run with default values. Use them only when you experience crashes or strange behavior. FX_GLIDE_NUM_TMU OS: all HW: 2 TMU cards (Voodoo2, Avenger, Napalm) Desc: force single-TMU Note: (*) Value: "1" FX_GLIDE_SWAPPENDINGCOUNT OS: all HW: all Desc: max # of buffers allowed to build up Note: (*) (!) Value: "0", "1", "2" or "3" FX_GLIDE_SWAPINTERVAL OS: all HW: all Desc: number of vertical retraces to wait before swapping Note: (*) (!) works only at Glide-level? SSTH3_SLI_AA_CONFIGURATION OS: all HW: VSA100-based cards Desc: SLI/AA setup Note: (*) (!) works only at Glide-level? Value: 1, 2, 4 chip cards "0" - SLI & AA disable "1" - SLI disabled, 2 sample AA enabled 2, 4 chip cards "2" - 2-way SLI enabled, AA disabled "3" - 2-way SLI enabled, 2 sample AA enabled "4" - SLI disabled, 4 sample AA enabled 4 chip cards "5" - 4-way SLI enabled, AA disabled "6" - 4-way SLI enabled, 2 sample AA enabled "7" - 2-way SLI enabled, 4 sample AA enabled "8" - SLI disabled, 8 sample AA enabled SST_DUALHEAD OS: win32 HW: ? Desc: ? Note: (!) disabled? MESA_FX_NO_SIGNALS OS: linux HW: all Desc: avoid installing signals Note: (!) untested! MESA_FX_INFO OS: all HW: all Desc: verbose to stderr Value: any; special value "r" to redirect stderr to MESA.LOG MESA_FX_IGNORE_PALEXT OS: all HW: all Desc: disable 6666 palette MESA_FX_IGNORE_PIXEXT OS: all HW: Napalm Desc: force 565 16bpp mode (traditional Voodoo, no 32/15bpp) MESA_FX_IGNORE_TEXFMT OS: all HW: Napalm Desc: disable 32bit textures MESA_FX_IGNORE_CMBEXT OS: all HW: Napalm Desc: disable Napalm combiners (color/alpha/texture) Note: this means advanced (multi)texturing modes won't work, but disabling this turns on REAL trilinear MESA_FX_IGNORE_MIREXT OS: all HW: all Desc: disable mirror extension MESA_FX_IGNORE_TEXUMA OS: all HW: all Desc: disable UMA MESA_FX_IGNORE_TEXUS2 OS: all HW: all Desc: disable Texus2 MESA_FX_MAXLOD OS: all HW: non Vsa-100 cards Desc: enable large texture support using SW rescaling Value: "9" - 512x512 textures "10" - 1024x1024 textures "11" - 2048x2048 textures Have fun and good luck! :D dborca 'at' dfxzone 'dot' it koolsmoky 'at' 3dfxzone 'dot' it