On Thu, 19 Aug 2004 18:40:12 +0200, Philipp Klaus Krause <[EMAIL PROTECTED]> wrote:
Attached are patches to enable support for GL_ARB_vertex_program in the r200 driver.
Thats very cool, but does this mean that it is hardware accelerated now?
No, I don't have any Radeon docs and the docs that some dri developers have don't cover programmable vertex processing as far as I know. So it seems we'll neve get any hardware accelerated support on these cards.
That isn't really as bad as it seems since when vertex processing is
done in software the rest of the graphics pipeline can still be hardware accelerated.
I've done some benchmarking with a vertex-transform limited scene with a single directional light with ambient, diffuse and specular and both
hardware tcl and a vertex program that does the same (it's the first
vertex program I ever wrote, so probably one could write a faster one
for the same purpose)."
On a Radeon 9000 Pro, 2x Athlon MP 2600+ I get these framerates:
Hardware tcl: 10.0 fps Vertex program: 2.5 fps
Since most programs use fixed-fuction vertex processing for most of the scene and vertex programs only for specific ceffects (water waves, animation of player models, etc) it should be ok.
I hope that it gets included in the r200 driver.
Philipp Klaus Krause
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