[Mesa-dev] [PATCH 17/78] i965/nir/vec4: Implement intrinsics that load system values
Eduardo Lima Mitev
elima at igalia.com
Fri Jun 26 01:06:33 PDT 2015
From: Alejandro PiƱeiro <apinheiro at igalia.com>
These include:
nir_intrinsic_load_vertex_id_zero_base
nir_intrinsic_load_base_vertex
nir_intrinsic_load_instance_id
The source register is fetched from the nir_system_values map initialized
during nir_setup_system_values stage.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89580
---
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 27 +++++++++++++++++++++------
1 file changed, 21 insertions(+), 6 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 55d4490..3fa8ca8 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -541,17 +541,32 @@ vec4_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
case nir_intrinsic_load_vertex_id:
unreachable("should be lowered by lower_vertex_id()");
- case nir_intrinsic_load_vertex_id_zero_base:
- /* @TODO: Not yet implemented */
+ case nir_intrinsic_load_vertex_id_zero_base: {
+ src_reg vertex_id =
+ src_reg(nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE]);
+ assert(vertex_id.file != BAD_FILE);
+ dest = get_nir_dest(instr->dest, vertex_id.type);
+ emit(MOV(dest, vertex_id));
break;
+ }
- case nir_intrinsic_load_base_vertex:
- /* @TODO: Not yet implemented */
+ case nir_intrinsic_load_base_vertex: {
+ src_reg base_vertex =
+ src_reg(nir_system_values[SYSTEM_VALUE_BASE_VERTEX]);
+ assert(base_vertex.file != BAD_FILE);
+ dest = get_nir_dest(instr->dest, base_vertex.type);
+ emit(MOV(dest, base_vertex));
break;
+ }
- case nir_intrinsic_load_instance_id:
- /* @TODO: Not yet implemented */
+ case nir_intrinsic_load_instance_id: {
+ src_reg instance_id =
+ src_reg(nir_system_values[SYSTEM_VALUE_INSTANCE_ID]);
+ assert(instance_id.file != BAD_FILE);
+ dest = get_nir_dest(instr->dest, instance_id.type);
+ emit(MOV(dest, instance_id));
break;
+ }
case nir_intrinsic_load_uniform_indirect:
/* fallthrough */
--
2.1.4
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