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st/mesa: automatically set per-sample interpolation if using SampleID/Pos 

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Marek Olšák 2015-09-27 19:54:57 +02:00
parent 4e9fc7e4e2
commit 6b0f21cb28
2 changed files with 10 additions and 2 deletions
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8
src/mesa/state_tracker/st_atom_shader.c
View File

@ -70,9 +70,15 @@ update_fp( struct st_context *st )
key.clamp_color = st->clamp_frag_color_in_shader &&
st->ctx->Color._ClampFragmentColor;
/* Ignore sample qualifier while computing this flag. */
/* Don't set it if the driver can force the interpolation by itself.
* If SAMPLE_ID or SAMPLE_POS are used, the interpolation is set
* automatically.
* Ignore sample qualifier while computing this flag.
*/
key.persample_shading =
!st->can_force_persample_interp &&
!(stfp->Base.Base.SystemValuesRead & (SYSTEM_BIT_SAMPLE_ID |
SYSTEM_BIT_SAMPLE_POS)) &&
_mesa_get_min_invocations_per_fragment(st->ctx, &stfp->Base, true) > 1;
st->fp_variant = st_get_fp_variant(st, stfp, &key);

4
src/mesa/state_tracker/st_program.c
View File

@ -619,7 +619,9 @@ st_translate_fragment_program(struct st_context *st,
else
interpLocation[slot] = TGSI_INTERPOLATE_LOC_CENTER;
if (key->persample_shading)
if (stfp->Base.Base.SystemValuesRead & (SYSTEM_BIT_SAMPLE_ID |
SYSTEM_BIT_SAMPLE_POS) ||
key->persample_shading)
interpLocation[slot] = TGSI_INTERPOLATE_LOC_SAMPLE;
switch (attr) {