[Mesa-dev] TGSI ISA formalization

[Corbin Simpson]

On Wed, Jun 16, 2010 at 7:04 PM, Corbin Simpson
<mostawesomedude at gmail.com> wrote:
> So I've gone ahead and pushed some more doc patches, and I'll probably
> push more later too. One of them is 8b548846, which changes the TGSI
> ISA listing to be grouped by caps. The bits I've guessed at are:
>
> ~ Core
> ~ Compute
> ~ Geometry
> ~ GLSL
> ~ Double
>
> In addition, there is ps_2_x, which I'm hoping somebody can explain
> for me, and CONT, which is listed under compute but already has its
> own cap.
>
> Are these acceptable? I would assume that some of these want to be
> shuffled around to better match hardware. In my mind, the GLSL cap bit
> is especially annoying, and it only contains some loop instructions
> and NOP, and the latter can definitely be in core without hurting
> things.
>
> The goal here is to hopefully version out TGSI in a way that focuses
> on the abilities of each part of the ISA and not the NV extension in
> which they debuted.
>
> If you don't have a local copy of the docs, I have an up-to-date one
> at http://people.freedesktop.org/~csimpson/gallium-docs .
>
> Oh, and could we get the swizzle info for UV and Z textures settled? I
> finally doc'd the R and RG textures...

One more thing! PIPE_CAP_SM3. What's up with this? Which opcodes
belong here? Does this actually describe hardware accurately?

~ C.

-- 
When the facts change, I change my mind. What do you do, sir? ~ Keynes

Corbin Simpson
<MostAwesomeDude at gmail.com>