[Mesa-dev] [PATCH v2 11/23] glsl: Add support for EmitStreamVertex() and EndStreamPrimitive().

[Ilia Mirkin]

On Thu, Jun 19, 2014 at 6:37 AM, Iago Toral <itoral at igalia.com> wrote:
> Regarding st_glsl_to_tgsi.cpp, I think I can use some guidance since I
> am not familiar with gallium. Seeing what is being done for other IR
> types, I think I need to do something like:
>
> st_src_reg stream_src = ir->stream->accept(this);
>
> and then emit the TGSI_OPCODE_EMIT passing stream_src to it.
>
> However, I see that glsl_to_tgsi_visitor::emit() can take no src/dst
> arguments or if it takes, it takes one dst/src pair at least, so I am
> not sure what should be done here... what do I have to use for the dst
> parameter? should I just pass undef_dst? something else?

Gallium presently doesn't have support for streams. This is the patch
series I used on top of your earlier series to start adding it in:

https://github.com/imirkin/mesa/commits/tfb

However it's probably fine for you to skip trying to add gallium
support for now. I'm sure my series is some stuff too... probably to
do with queries.

  -ilia