seta com_videoRam "256"  // sometimes doom doesn't detect video ram properly - hard code it here
seta cm_backFaceCull "1" // don't render anything behind you - crashes my 5800 but works with ATI cards
seta com_machineSpec "2" // 1 = medium quality, 2 = hq, 3 = ultra hq
seta image_useCache "1"  // default 0 - pre-caches textures to prevent stuttering/jerkyness
seta image_cacheMegs "256" // default 32 - set from 1/4 to 1/2 of your total system ram
seta image_cacheMinK "32768" // optimal setting should equal (image_cacheMegs / 8) * 1024
seta image_downSizeLimit "1024" // 1024 for 256mb cards. 512 for 128mb or 256 for 64mb
seta image_downSize "1"  // used to enable above
seta image_downSizeBumpLimit "1024" // 1024 for 256mb cards, 512 for 128mb or 256 for 64mb
seta image_downSizeBump "1" // enables above
seta image_downSizeSpecularLimit "256" // this setting controls the specular lighting light map downsample limit
seta image_downSizeSpecular "1" // enables it
seta image_preload "1"  // preload images
seta r_useCulling "2"  // 0 = none, 1 = sphere, 2 = sphere + box
seta r_useEntityCulling "1" // 0 = none, 1 = box
seta r_useLightCulling "2" // 0 = none, 1 = box, 2 = exact clip of polyhedron faces, 3 = also areas
seta r_usePortals "1"  // use portals for area culling
seta r_useShadowCulling "1" // try to cull shadows from partially visible lights
seta r_useShadowProjectedCull "1"
seta r_useDepthBoundsTest "1" // Nvidia only
seta r_useTurboShadow "1"
seta r_useOptimizedShadows "1"
seta r_useTwoSidedStencil "1"
seta r_useShadowVertexProgram "1"