Originally Posted By: 3run
I know that mipmaps will increase the framerate, but I don't know how to make and use them.
??? cry

a) for models in MED: Skin Settings -> Texture format -> Flag 'Mipmaps'.
b) or use DDS skin with included mipmaps.
c) or at runtime: bmap_to_mipmap(bmap_for_entity(my,0));
d) for sprites: mip_sprites = 1;

Also see 'd3d_mipmapping', 'mip_levels', 'mip_flat' and 'mip_shaded' in the manual.