Original Post
Has anyone used ProcessVertices() with their vertex buffers yet? I noticed that, by specifying a flag, one can clip vertices that aren''t in the viewing frustum. My question is: How does this affect the destination vertex buffer? And how do I draw the resulting (processed) vertex buffer when I''m done?
Example:
Let''s say we''ve got a model with 1000 polygons in it, stored in a vertex buffer named srcVB. Normally, we would call DrawIndexedPrimitiveVB() on it, and drawing it as a TRIANGLELIST. Instead, let''s say we do the following:
destVB -> ProcessVertices(DO_CLIPPING, srcVB, 1000);
OK, now that we''ve done the clipping:
a) Are all 1000 entries in destVB filled up? Are polygons that were clipped marked in some way?
b) How do I draw it? Can I now call: DrawIndexedPrimitiveVB(TRIANGLELIST,destVB, 1000, model_indices_list)?
Lookin'' for some advice/experience here...
Vyvyan
