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st/mesa: set force_persample_interp if ARB_sample_shading is used

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This is only a half of the work. The next patch will handle
gl_SampleID/SamplePos, which is the other half of ARB_sample_shading.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Marek Olšák 2015-09-27 19:43:00 +02:00
parent f3b37e321f
commit 4e9fc7e4e2
4 changed files with 12 additions and 0 deletions
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8
src/mesa/state_tracker/st_atom_rasterizer.c
View file

@ -237,6 +237,14 @@ static void update_raster_state( struct st_context *st )
/* _NEW_MULTISAMPLE */
raster->multisample = ctx->Multisample._Enabled;
/* _NEW_MULTISAMPLE | _NEW_BUFFERS */
raster->force_persample_interp =
st->can_force_persample_interp &&
ctx->Multisample._Enabled &&
ctx->Multisample.SampleShading &&
ctx->Multisample.MinSampleShadingValue *
ctx->DrawBuffer->Visual.samples > 1;
/* _NEW_SCISSOR */
raster->scissor = ctx->Scissor.EnableFlags;

1
src/mesa/state_tracker/st_atom_shader.c
View file

@ -72,6 +72,7 @@ update_fp( struct st_context *st )
/* Ignore sample qualifier while computing this flag. */
key.persample_shading =
!st->can_force_persample_interp &&
_mesa_get_min_invocations_per_fragment(st->ctx, &stfp->Base, true) > 1;
st->fp_variant = st_get_fp_variant(st, stfp, &key);

2
src/mesa/state_tracker/st_context.c
View file

@ -237,6 +237,8 @@ st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
PIPE_BIND_SAMPLER_VIEW);
st->prefer_blit_based_texture_transfer = screen->get_param(screen,
PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
st->can_force_persample_interp = screen->get_param(screen,
PIPE_CAP_FORCE_PERSAMPLE_INTERP);
st->needs_texcoord_semantic =
screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);

1
src/mesa/state_tracker/st_context.h
View file

@ -98,6 +98,7 @@ struct st_context
boolean has_etc1;
boolean has_etc2;
boolean prefer_blit_based_texture_transfer;
boolean can_force_persample_interp;
boolean needs_texcoord_semantic;
boolean apply_texture_swizzle_to_border_color;