[Dri-devel] Migrated i830 driver to t_vertex.[ch]

[Keith W. <ke...@tu...>]

I've just committed a change to move the i830 driver to the new t_vertex.[ch] 
mechanism for specifying and emitting hardware vertices.

One of the nice things about this mechanism is how easy it is to support a 
wide variety of vertex formats -- the intention is that anything you can tell 
the hardware to use, this code should be able to emit.

It's also very code-efficient, the code to setup vertex formats is small 
enough now that it no longer justifies a seperate file and has been merged 
into i830_tris.c

Projective texturing, 1d, 2d, 3d texture coordinates, large numbers of texture 
units, etc. are all easily handled by the code -- have a look if you're 
interested in this stuff.

Right now, the vertex specifications built up this way are iterated over for 
each emitted vertex.  The intention is for some motivated person to come up 
with a codegen scheme for the emit code at least.  Until that time, expect a 
slight performance hit using this new code.  However, doing the optimization 
once will benefit all drivers immediately...

Keith