Multipass rendering of terrains.

[3DModelerMan]

If I use the technique of using multiple passes to render terrain splatting with EMT_SOLID_2_LAYER then can I render my own lighting effects with the final pass and use only the texturing features of the first few?

[kjkrum]

I'm interested in this as well. Are there actually any alternatives to multipass rendering, other than using custom shaders?

My understanding of EMT_SOLID_2_LAYER is that the base texture is always rendered at 100% alpha, and then the second texture is blended over it based on the vertex alpha. So each pass would obliterate the previous pass. I think you want to use EMT_TRANSPARENT_VERTEX_ALPHA instead. But I'm a noob, so I could easily be wrong...