MAPPING: lightmap on transparent surface

[natirips]

Here is an example of how to map lightmap onto a transparent surface (i.e. graffiti, tree branches,...).

Code: Select all

textures/ut_faks2/gr-ntr
{
   surfaceparm nonsolid
   surfaceparm trans
   polygonOffset
   nomipmaps
   nopicmip
   {
      map textures/ut_faks2/gr-ntr.tga
      blendfunc blend
      alphafunc GE128
      depthwrite
      rgbgen identity
   }
   {
      map $lightmap
      rgbgen identity
      blendfunc filter
      depthfunc equal
   }
}

polygonOffset is not needed for tree branches, but is needed for graffiti, cracks, stains, etc.

This example is from ut_faks3 and is used for "NATIRIPS" graffiti.

This is what it can look like in-game (wall is one brush and graffiti is an overlapping brush that causes z-fighting in the editor but polygonOffset fixes z-fighting in-game):

shot0143_.jpg