[Mesa-dev] [PATCH 5/9] intel gen4-5: Compute the interpolation status for every variable in one place.

[Eric Anholt]

Olivier Galibert <galibert at pobox.com> writes:

> The program keys are updated accordingly, but the values are not used
> yet.
>
> Signed-off-by: Olivier Galibert <galibert at pobox.com>
> ---
>  src/mesa/drivers/dri/i965/brw_clip.c    |   90 ++++++++++++++++++++++++++++++-
>  src/mesa/drivers/dri/i965/brw_clip.h    |    1 +
>  src/mesa/drivers/dri/i965/brw_context.h |   11 ++++
>  src/mesa/drivers/dri/i965/brw_sf.c      |    5 +-
>  src/mesa/drivers/dri/i965/brw_sf.h      |    1 +
>  src/mesa/drivers/dri/i965/brw_wm.c      |    2 +
>  src/mesa/drivers/dri/i965/brw_wm.h      |    1 +
>  7 files changed, 109 insertions(+), 2 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_clip.c b/src/mesa/drivers/dri/i965/brw_clip.c
> index d411208..b4a2e0a 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip.c
> @@ -47,6 +47,86 @@
>  #define FRONT_UNFILLED_BIT  0x1
>  #define BACK_UNFILLED_BIT   0x2
>  
> +/**
> + * Lookup the interpolation mode information for every element in the
> + * vue.
> + */
> +static void
> +brw_lookup_interpolation(struct brw_context *brw)
> +{
> +   /* pprog means "previous program", i.e. the last program before the
> +    * fragment shader.  It can only be the vertex shader for now, but
> +    * it may be a geometry shader in the future.
> +    */
> +   const struct gl_program *pprog = &brw->vertex_program->Base;
> +   const struct gl_fragment_program *fprog = brw->fragment_program;
> +   struct brw_vue_map *vue_map = &brw->vs.prog_data->vue_map;
> +
> +   /* Default everything to INTERP_QUALIFIER_NONE */
> +   memset(brw->interpolation_mode, INTERP_QUALIFIER_NONE, BRW_VERT_RESULT_MAX);

I don't like seeing this data that should be referenced out of the
program cache key being communicated through brw->.
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