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anv: simplify EXT_mesh_shader lowering

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No functional changes.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20292>
This commit is contained in:
Marcin Ślusarz
2022-11-28 17:26:56 +01:00
committed by Marge Bot
parent 7fbd1dfb18
commit 5ffdd47a26
1 changed files with 24 additions and 30 deletions
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src/intel/vulkan/anv_pipeline.c
+24 -30
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@@ -57,43 +57,37 @@ anv_nir_lower_mesh_ext_instr(nir_builder *b, nir_instr *instr, void *data)
return false;
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
if (intrin->intrinsic != nir_intrinsic_set_vertex_and_primitive_count)
return false;
struct lower_mesh_ext_state *state = data;
/* this intrinsic should show up only once */
assert(state->primitive_count == NULL);
switch (intrin->intrinsic) {
case nir_intrinsic_set_vertex_and_primitive_count: {
/* this intrinsic should show up only once */
assert(state->primitive_count == NULL);
state->primitive_count =
nir_variable_create(b->shader,
nir_var_shader_out,
glsl_uint_type(),
"gl_PrimitiveCountNV");
state->primitive_count->data.location = VARYING_SLOT_PRIMITIVE_COUNT;
state->primitive_count->data.interpolation = INTERP_MODE_NONE;
state->primitive_count =
nir_variable_create(b->shader,
nir_var_shader_out,
glsl_uint_type(),
"gl_PrimitiveCountNV");
state->primitive_count->data.location = VARYING_SLOT_PRIMITIVE_COUNT;
state->primitive_count->data.interpolation = INTERP_MODE_NONE;
b->cursor = nir_before_instr(&intrin->instr);
b->cursor = nir_before_instr(&intrin->instr);
nir_ssa_def *local_invocation_index = nir_build_load_local_invocation_index(b);
nir_ssa_def *local_invocation_index = nir_build_load_local_invocation_index(b);
nir_ssa_def *cmp = nir_ieq(b, local_invocation_index,
nir_imm_int(b, 0));
nir_if *if_stmt = nir_push_if(b, cmp);
{
nir_deref_instr *prim_count_deref = nir_build_deref_var(b, state->primitive_count);
nir_store_deref(b, prim_count_deref, intrin->src[1].ssa, 1);
}
nir_pop_if(b, if_stmt);
nir_instr_remove(instr);
return true;
nir_ssa_def *cmp = nir_ieq(b, local_invocation_index,
nir_imm_int(b, 0));
nir_if *if_stmt = nir_push_if(b, cmp);
{
nir_deref_instr *prim_count_deref = nir_build_deref_var(b, state->primitive_count);
nir_store_deref(b, prim_count_deref, intrin->src[1].ssa, 1);
}
nir_pop_if(b, if_stmt);
default:
break;
}
return false;
nir_instr_remove(instr);
return true;
}
static bool