Avoids regressions in vc4 when trying to do our blending in NIR.
v2: Add the other unpack ops I meant to when writing the original commit
message.
---
src/glsl/nir/nir_lower_alu_to_scalar.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/src/glsl/nir/nir_lower_alu_to_scalar.c
b/src/glsl/nir/nir_lower_alu_to_scalar.c
index 5d15fb2..efbe9e7 100644
--- a/src/glsl/nir/nir_lower_alu_to_scalar.c
+++ b/src/glsl/nir/nir_lower_alu_to_scalar.c
@@ -100,6 +100,21 @@ lower_alu_instr_scalar(nir_alu_instr *instr, void *mem_ctx)
*/
return;
+ case nir_op_unpack_unorm_4x8:
+ case nir_op_unpack_snorm_4x8:
+ case nir_op_unpack_unorm_2x16:
+ case nir_op_unpack_snorm_2x16:
+ /* There is no scalar version of these ops, unless we were to break it
+ * down to bitshifts and math (which is definitely not intended).
+ */
+ return;
+
+ case nir_op_unpack_half_2x16:
+ /* We could split this into unpack_half_2x16_split_[xy], but should
+ * we?
+ */
+ return;
+
LOWER_REDUCTION(nir_op_fdot, nir_op_fmul, nir_op_fadd);
LOWER_REDUCTION(nir_op_ball_fequal, nir_op_feq, nir_op_iand);
LOWER_REDUCTION(nir_op_ball_iequal, nir_op_ieq, nir_op_iand);
--
2.1.4
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