[Mesa-dev] Request for information on Radeon

[Chris Forbes]

For the first two points, a partial implementation is already done here:

https://github.com/fabe3k/mesa/commits/tessellation

This predates the addition of ARB_separate_shader_objects, which has
some interactions. There are probably also plenty of rough edges, but
it should give you enough to get started with the gallium/tgsi parts.

On Wed, Jun 11, 2014 at 8:45 AM, Aditya Avinash
<adityaavinash1 at gmail.com> wrote:
> Hi,
> Thank you very much!!
>
> On Mon, Jun 9, 2014 at 10:19 AM, Marek Olšák <maraeo at gmail.com> wrote:
>>
>> This is probably one of the most difficult tasks. You'll need to:
>>
>> 1) Add support to Mesa core - new shader stages and the new OpenGL
>> functions and queries (src/mesa/main)
>
>
> Ya. This one is straight forward. The added Tessellation stage should be
> added to the OpenGL pipeline.
>
>>
>> 2) Add support to the GLSL compiler (src/glsl)
>
>
> Ok!
>
>>
>> 3) Add support to the Gallium interface and TGSI
>> (src/gallium/include/pipe) and supporting code (src/gallium/auxiliary)
>>
>
> Can you explain a bit more?
>
>>
>> 4) Add support to the Mesa state tracker (src/mesa/state_tracker),
>> which translates everything from Mesa core and GLSL IR to Gallium and
>> TGSI, respectively.
>
>
> Ok!
>
>>
>> 5) Add support to either r600g or radeonsi. For radeonsi, implement
>> the Gallium interface and program all the hardware registers
>> correctly. On the shader side, add support to the TGSI->LLVM IR
>> converter. (src/gallium/drivers/radeonsi) You might also need some
>> small changes in the LLVM shader backend, not sure about that.
>>
>
> Ok!
>
>>
>> 6) Add a lot of of piglit tests.
>>
> Ya!
>>
>> Marek
>>
>>
>> On Sun, Jun 8, 2014 at 2:05 PM, Aditya Avinash <adityaavinash1 at gmail.com>
>> wrote:
>> > Hi,
>> > I was looking at RadeonFeature. It shows that Tessellation stage is
>> > "TODO".
>> > What should I do to pick it? I am new to Mesa. Can you help me with some
>> > documentation which is useful for me to accomplish the task?
>> > Thank you!
>> >
>> > --
>> > Regards,
>> > Aditya Atluri.
>> >
>> > _______________________________________________
>> > mesa-dev mailing list
>> > mesa-dev at lists.freedesktop.org
>> > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>> >
>
>
> I have been reading about the Tessellation shader and proprietary OpenGL API
> present at opengl extensions page.
> Where should I get started?
> Thank you very much.
>
> --
> Regards,
> Aditya Atluri,
> USA.
>
>
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