When using SetObjectCullMode(,0) and backfaces is displayed, the shader do not invert the normals , so light do not work ( or is inverted ).
I know i could use double sided planes but i need as few polygons as possible.
its for a realtime generation of billboards. if you look at the screenshot you can see that the billboard version of the object has inverted light ( when backface is facing camera ).
if you look at the realtime generated billboard you see that the textures i generate for the billboard objects has a merged texture from different angles of the same object baked into one texture. So the billboard must have the same rotation as the original object to reflect it correctly. ( i cant just let it face the camera ).
best regards Preben Eriksen,
