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authorKenneth Graunke <[email protected]>2015-08-03 16:02:16 -0700
committerKenneth Graunke <[email protected]>2015-09-08 18:02:08 -0700
commitd5d74d0b86207cff2820561cc3c8b40546a11bc9 (patch)
treef8ca6b80d7c3ff8434a7238411a895eedbfb1a4b /src/glsl
parent8fbc4ae330b9ef51bce9023c2f58d1888fb6b796 (diff)
nir: Add a nir_system_value_from_intrinsic() function.
This converts NIR intrinsics that load system values into Mesa's SYSTEM_VALUE_* enumerations. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]>
Diffstat (limited to 'src/glsl')
-rw-r--r--src/glsl/nir/nir.c34
-rw-r--r--src/glsl/nir/nir.h2
2 files changed, 36 insertions, 0 deletions
diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index 3f4bec4625d..ab06ea2bc19 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 e73b7fbc4e1..3c375f30c53 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1842,6 +1842,8 @@ 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