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nir: gather tess.tcs_cross_invocation info from lowered IO intrinsics

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Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6758>
This commit is contained in:
Marek Olšák
2020-09-16 02:31:58 -04:00
parent 10be706778
commit abe9588ff0
1 changed files with 21 additions and 0 deletions
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21
src/compiler/nir/nir_gather_info.c
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@@ -25,6 +25,17 @@
#include "nir_deref.h"
#include "main/menums.h"
static bool
src_is_invocation_id(const nir_src *src)
{
assert(src->is_ssa);
if (src->parent_instr->type != nir_instr_type_intrinsic)
return false;
return nir_instr_as_intrinsic(src->parent_instr)->intrinsic ==
nir_intrinsic_load_invocation_id;
}
static void
get_deref_info(nir_shader *shader, nir_variable *var, nir_deref_instr *deref,
bool *cross_invocation, bool *indirect)
@@ -367,6 +378,11 @@ gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader,
if (!nir_src_is_const(*nir_get_io_offset_src(instr)))
shader->info.inputs_read_indirectly |= slot_mask;
}
if (shader->info.stage == MESA_SHADER_TESS_CTRL &&
instr->intrinsic == nir_intrinsic_load_per_vertex_input &&
!src_is_invocation_id(nir_get_io_vertex_index_src(instr)))
shader->info.tess.tcs_cross_invocation_inputs_read |= slot_mask;
break;
case nir_intrinsic_load_output:
@@ -381,6 +397,11 @@ gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader,
if (!nir_src_is_const(*nir_get_io_offset_src(instr)))
shader->info.outputs_accessed_indirectly |= slot_mask;
}
if (shader->info.stage == MESA_SHADER_TESS_CTRL &&
instr->intrinsic == nir_intrinsic_load_per_vertex_output &&
!src_is_invocation_id(nir_get_io_vertex_index_src(instr)))
shader->info.tess.tcs_cross_invocation_outputs_read |= slot_mask;
break;
case nir_intrinsic_store_output: