DX9 Vertex Shader 2.0-3.0 in Software

Graphics and GPU Programming Programming

Started by L_dot_N January 20, 2003 08:34 AM

2 comments, last by L_dot_N 21 years, 2 months ago

122

Author

January 20, 2003 08:34 AM

In DX9 are the Vertex Shader 1.0-3.0 in Software avalible.(SW Vertex Processing) Has someone used the VS 3.0 allready ???(for what are they good ?) Is Displacement Mapping avalible in Software too ?????

Drath

138

January 20, 2003 02:09 PM

Back in DX8 anyway, VS1.0 and 1.1 ran rather efficiently in software. Pixel shading is another story though.

chollida1

532

January 20, 2003 02:14 PM

Vertex Shaders will still run very well on the CPU, Pixel Shaders don''t seem to work as well

Cheers
Chris

CheersChris

thedo

124

January 20, 2003 02:34 PM

My experience that VS2 is pretty slow in SW. A (VERY) Simple shader to transform coords is approximately 1.5x slower in SW than the EXACT SAME VS code in VS1.1. Obviously you would probably not use VS2 for such a simple thing at the moment (limited HW support is one good reason) but I did it for experimental purposes.

Neil

WHATCHA GONNA DO WHEN THE LARGEST ARMS IN THE WORLD RUN WILD ON YOU?!?!

WHATCHA GONNA DO WHEN THE LARGEST ARMS IN THE WORLD RUN WILD ON YOU?!?!