[Mesa-dev] TGSI thoughts

[Brian Paul]

On 07/28/2010 09:21 PM, Jakob Bornecrantz wrote:
> I wrote some patches to the documentation that extracted some
> information from this thread I'm hoping I got nothing wrong. Number
> two and  four are the controversial patches.
>
> The first patch just reorders and organizes the Core ISA subsections
> and adds paragraphs, this made it at least for me made it easier to
> read. Hopefully I didn't mess anything up here.
>
> The second patch just says that the DDX and DDY opcodes are not in the
> Core ISA but instead is guarded by SM3 and GLSL cap bits.
>
> Number three just makes the scalar result opcodes a bit easier to read.
>
> Fourth adds some information about the ARL/ARA/ARR opcodes that I
> extracted from the the ARB_vertex_program extensions. The opcodes only
> read and write on the X channel and that they are the only
> instructions that can touch a address register.
>
> Comments please.

The ARL instruction can also be used by GLSL fragment shaders.

-Brian