How do I create a second UV map?

Blitz3D Forums/Blitz3D Programming/How do I create a second UV map?

Rob Farley (Posted 2005) [#1]

OK, I've created a grid that's 32x32 for example. I can map a textures onto each of those squares, create additional surfaces where necessary etc. No problem. Now I want to map a light map over the whole thing. How do I set an additional UV channel with different UV co-ords to do this?

Rottbott (Posted 2005) [#2]

In code? VertexTexCoords() takes a parameter to tell it you are talking about the second UV set.

Rob Farley (Posted 2005) [#3]

Ah Righty! I'll have a play with that! Haven't looked at that command. Thanks.

Ching (Posted 2005) [#4]

I'm also looking into this area, can anyone tell me in plain english what the second uv coordinater set is for? How it operates etc. The manual is a little sparse on this area.

jfk EO-11110 (Posted 2005) [#5]

the second UV set works exactly like the first, except that it is used for the second texture. A Brush may have multiple textures. With the "BrushTexture" Command you can use the "Index" Parameter to define the texture layer you want to use with this texture. Usually it is 0 for the ordinary textures and 1 for the lightmap. See also: CreateBrush, PaintMesh, VertexTexCoords...