FX to Convert TGA into Triangels for Shadow creation?

Hello,

got the Problem, how to make the TGA-Files, that I do use in my Demo-Level, to cast a detailled Shadow.

Is there any Shader, that converts a TGA into a kind of flat Model, consiting of Triangels? Where the TGA is totally transparent, there shall be no Triangels.

This Model could be used for the Shadowcration.

Is there such a Shader here around, or does anyone know of?

C.U. R.E.Z.

Look up decals in the manual

His problem is not about painting the decal, but about creating the image of that decal at runtime.

@ lostclimate and
@ Sajeth

thank You for Your Answers :-)
Have a nice weekend.

C.U. R.E.Z.