We use nir_ssa_defs for nir_builder args, so this takes a nir_src and
makes one so it can be passed in.
---
src/glsl/nir/nir_builder.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/src/glsl/nir/nir_builder.h b/src/glsl/nir/nir_builder.h
index ecbdbe3..587d014 100644
--- a/src/glsl/nir/nir_builder.h
+++ b/src/glsl/nir/nir_builder.h
@@ -225,4 +225,23 @@ nir_swizzle(nir_builder *build, nir_ssa_def *src, unsigned
swiz[4],
nir_imov_alu(build, alu_src, num_components);
}
+/**
+ * Turns a nir_src into a nir_ssa_def * so it can be passed to
+ * nir_build_alu()-based builder calls.
+ */
+static inline nir_ssa_def *
+nir_ssa_for_src(nir_builder *build, nir_src src, int num_components)
+{
+ if (src.is_ssa && src.ssa->num_components == num_components)
+ return src.ssa;
+
+ nir_alu_src alu;
+ memset(&alu, 0, sizeof(alu));
+ alu.src = src;
+ for (int j = 0; j < 4; j++)
+ alu.swizzle[j] = j;
+
+ return nir_imov_alu(build, alu, num_components);
+}
+
#endif /* NIR_BUILDER_H */
--
2.1.4
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
