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tgsi: handle TG4 opcode in tgsi exec

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This just adds a new modifier interface for drivers to implement.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2015-05-19 16:16:07 +10:00
parent 3f5c67d651
commit a6861ecfc9
2 changed files with 12 additions and 2 deletions
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11
src/gallium/auxiliary/tgsi/tgsi_exec.c
View file

@ -1952,7 +1952,7 @@ fetch_texel( struct tgsi_sampler *sampler,
#define TEX_MODIFIER_LOD_BIAS 2
#define TEX_MODIFIER_EXPLICIT_LOD 3
#define TEX_MODIFIER_LEVEL_ZERO 4
#define TEX_MODIFIER_GATHER 5
/*
* Fetch all 3 (for s,t,r coords) texel offsets, put them into int array.
@ -2069,6 +2069,8 @@ exec_tex(struct tgsi_exec_machine *mach,
control = tgsi_sampler_lod_explicit;
else if (modifier == TEX_MODIFIER_LOD_BIAS)
control = tgsi_sampler_lod_bias;
else if (modifier == TEX_MODIFIER_GATHER)
control = tgsi_sampler_gather;
}
else {
for (i = dim; i < Elements(args); i++)
@ -4374,6 +4376,13 @@ exec_instruction(
exec_tex(mach, inst, TEX_MODIFIER_PROJECTED, 1);
break;
case TGSI_OPCODE_TG4:
/* src[0] = texcoord */
/* src[1] = component */
/* src[2] = sampler unit */
exec_tex(mach, inst, TEX_MODIFIER_GATHER, 2);
break;
case TGSI_OPCODE_UP2H:
assert (0);
break;

3
src/gallium/auxiliary/tgsi/tgsi_exec.h
View file

@ -93,7 +93,8 @@ enum tgsi_sampler_control {
tgsi_sampler_lod_bias,
tgsi_sampler_lod_explicit,
tgsi_sampler_lod_zero,
tgsi_sampler_derivs_explicit
tgsi_sampler_derivs_explicit,
tgsi_sampler_gather,
};
/**