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authorKenneth Graunke <kenneth@whitecape.org>2015-05-12 01:53:24 -0700
committerKenneth Graunke <kenneth@whitecape.org>2015-09-11 00:04:17 -0700
commitcb2b118e4017b1cd90dcc02e688d859b2709465e (patch)
tree40a4e20dc5f3998dec7e0cfa99fbf10a50136f36
parent4654439fdd766f79a78fe0d812fd916f5815e7e6 (diff)
nir/builder: Add nir_load_var() and nir_store_var() helpers.
These provide a convenient way to do simple variable loads and stores. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
-rw-r--r--src/glsl/nir/nir_builder.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_builder.h b/src/glsl/nir/nir_builder.h
index ba988d71dde..ffa31c90a45 100644
--- a/src/glsl/nir/nir_builder.h
+++ b/src/glsl/nir/nir_builder.h
@@ -234,4 +234,31 @@ nir_ssa_for_src(nir_builder *build, nir_src src, int num_components)
return nir_imov_alu(build, alu, num_components);
}
+static inline nir_ssa_def *
+nir_load_var(nir_builder *build, nir_variable *var)
+{
+ const unsigned num_components = glsl_get_vector_elements(var->type);
+
+ nir_intrinsic_instr *load =
+ nir_intrinsic_instr_create(build->shader, nir_intrinsic_load_var);
+ load->num_components = num_components;
+ load->variables[0] = nir_deref_var_create(load, var);
+ nir_ssa_dest_init(&load->instr, &load->dest, num_components, NULL);
+ nir_builder_instr_insert(build, &load->instr);
+ return &load->dest.ssa;
+}
+
+static inline void
+nir_store_var(nir_builder *build, nir_variable *var, nir_ssa_def *value)
+{
+ const unsigned num_components = glsl_get_vector_elements(var->type);
+
+ nir_intrinsic_instr *store =
+ nir_intrinsic_instr_create(build->shader, nir_intrinsic_store_var);
+ store->num_components = num_components;
+ store->variables[0] = nir_deref_var_create(store, var);
+ store->src[0] = nir_src_for_ssa(value);
+ nir_builder_instr_insert(build, &store->instr);
+}
+
#endif /* NIR_BUILDER_H */