[Mesa-dev] [PATCH 2/4] mesa: Set UsesDFdy appropriately for assembly programs.

[Kenneth Graunke]

On 07/18/2012 12:16 PM, Paul Berry wrote:
> ---
>  src/mesa/program/arbprogparse.c   |    1 +
>  src/mesa/program/program_parse.y  |    2 ++
>  src/mesa/program/program_parser.h |    1 +
>  3 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/src/mesa/program/arbprogparse.c b/src/mesa/program/arbprogparse.c
> index dffc8ab..72e51dd 100644
> --- a/src/mesa/program/arbprogparse.c
> +++ b/src/mesa/program/arbprogparse.c
> @@ -120,6 +120,7 @@ _mesa_parse_arb_fragment_program(struct gl_context* ctx, GLenum target,
>     program->PixelCenterInteger = state.option.PixelCenterInteger;
>  
>     program->UsesKill            = state.fragment.UsesKill;
> +   program->UsesDFdy            = state.fragment.UsesDFdy;

This reminds me, could you do something similar to clean up the
kill_emitted flag in brw_fs_visitor?  It's kind of a hack, and I seem to
recall that we wanted to do the kind of front-end plumbing you're
already doing here.

Not to mention there already seems to be a UsesKill flag...