This converts NIR intrinsics that load system values into Mesa's
SYSTEM_VALUE_* enumerations.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/glsl/nir/nir.c | 34 ++++++++++++++++++++++++++++++++++
src/glsl/nir/nir.h | 2 ++
2 files changed, 36 insertions(+)
diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index 3f4bec4..ab06ea2 100644
--- a/src/glsl/nir/nir.c
+++ b/src/glsl/nir/nir.c
@@ -1404,3 +1404,37 @@ nir_index_ssa_defs(nir_function_impl *impl)
nir_foreach_block(impl, index_ssa_block, &index);
impl->ssa_alloc = index;
}
+
+gl_system_value
+nir_system_value_from_intrinsic(nir_intrinsic_op intrin)
+{
+ switch (intrin) {
+ case nir_intrinsic_load_vertex_id:
+ return SYSTEM_VALUE_VERTEX_ID;
+ case nir_intrinsic_load_instance_id:
+ return SYSTEM_VALUE_INSTANCE_ID;
+ case nir_intrinsic_load_vertex_id_zero_base:
+ return SYSTEM_VALUE_VERTEX_ID_ZERO_BASE;
+ case nir_intrinsic_load_base_vertex:
+ return SYSTEM_VALUE_BASE_VERTEX;
+ case nir_intrinsic_load_invocation_id:
+ return SYSTEM_VALUE_INVOCATION_ID;
+ case nir_intrinsic_load_front_face:
+ return SYSTEM_VALUE_FRONT_FACE;
+ case nir_intrinsic_load_sample_id:
+ return SYSTEM_VALUE_SAMPLE_ID;
+ case nir_intrinsic_load_sample_pos:
+ return SYSTEM_VALUE_SAMPLE_POS;
+ case nir_intrinsic_load_sample_mask_in:
+ return SYSTEM_VALUE_SAMPLE_MASK_IN;
+ /* FINISHME: Add tessellation intrinsics.
+ return SYSTEM_VALUE_TESS_COORD;
+ return SYSTEM_VALUE_VERTICES_IN;
+ return SYSTEM_VALUE_PRIMITIVE_ID;
+ return SYSTEM_VALUE_TESS_LEVEL_OUTER;
+ return SYSTEM_VALUE_TESS_LEVEL_INNER;
+ */
+ default:
+ unreachable("intrinsic doesn't produce a system value");
+ }
+}
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index 53e883e..b13e92d 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1843,6 +1843,8 @@ bool nir_opt_undef(nir_shader *shader);
void nir_sweep(nir_shader *shader);
+gl_system_value nir_system_value_from_intrinsic(nir_intrinsic_op intrin);
+
#ifdef __cplusplus
} /* extern "C" */
#endif
--
2.5.1
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