[Mesa-dev] TGSI thoughts

[Marek Olšák]

On Wed, Jul 28, 2010 at 4:25 PM, Zack Rusin <zackr at vmware.com> wrote:

> On Wednesday 28 July 2010 06:26:39 Marek Olšák wrote:
> > Going from GL2.1 to GL1.5 just because some hardware can't do ddx and ddy
> > seems a bit silly to me.
>
> I'm not quite sure what do you mean here, derivatives have been present in
> GLSL since 1.1 so realistically hardware without them can't support any
> version of GLSL.
>
> > 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
>
> I was saying that they are mandatory for Gallium, not that semantically
> they
> are mandatory for everyone (also as Keith pointed out they are there in
> VS3.0). Long term, especially with GPGPU it would probably make sense to
> make
> our indirect addressing more robust but for now it is what it is.
>

Yeah, I misunderstood your previous statement. I agree now.

Have a nice day.

-Marek
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