[Mesa-dev] TGSI thoughts

[Keith Whitwell]

On Wed, 2010-07-28 at 03:26 -0700, Marek Olšák wrote:

> 
> PS3.0 doesn't have address regs, that means there are no ARL/ARR/ARA
> opcodes. Are you sure these must be mandatory? Please see:
> http://msdn.microsoft.com/en-us/library/bb172920%28VS.85%29.aspx

Agree, though they are present in the vertex shader right from SM1.x.

> PUSHA, POPA, and pack/unpack opcodes are not in SM3.0 either.

The only place I've seen pack/unpack is in the nvidia GL extensions.  I
suspect that push/pop are from some similarly obscure provenance.

Keith