diff options
| -rw-r--r-- | src/intel/compiler/brw_fs_nir.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp index 5e3c9de141b..832821015fb 100644 --- a/src/intel/compiler/brw_fs_nir.cpp +++ b/src/intel/compiler/brw_fs_nir.cpp @@ -4122,7 +4122,20 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr * to rely on byte scattered in order to write 16-bit elements. * The byte_scattered_write message needs that every written 16-bit * type to be aligned 32-bits (stride=2). + * Additionally, while on Untyped Surface messages the + * bits of the execution mask are ANDed with the corresponding + * bits of the Pixel/Sample Mask, that is not the case for byte + * scattered writes. That is needed to avoid ssbo stores writing + * on helper invocations. So when that can affect, we load the + * sample mask, and predicate the send message. */ + brw_predicate pred = BRW_PREDICATE_NONE; + + if (stage == MESA_SHADER_FRAGMENT) { + bld.emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS); + pred = BRW_PREDICATE_NORMAL; + } + fs_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_D); bld.MOV(subscript(tmp, BRW_REGISTER_TYPE_W, 0), offset(val_reg, bld, first_component)); @@ -4130,7 +4143,7 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr tmp, 1 /* dims */, 1, bit_size, - BRW_PREDICATE_NONE); + pred); } else { assert(num_components * type_size <= 16); assert((num_components * type_size) % 4 == 0); |