---
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index e1f5735..e6c34fa 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -634,14 +634,24 @@ fs_visitor::visit(ir_expression *ir)
else
emit(MUL(this->result, op[0], op[1]));
} else {
- if (brw->gen >= 7)
- no16("SIMD16 explicit accumulator operands unsupported\n");
-
struct brw_reg acc = retype(brw_acc_reg(), this->result.type);
- emit(MUL(acc, op[0], op[1]));
- emit(MACH(reg_null_d, op[0], op[1]));
- emit(MOV(this->result, fs_reg(acc)));
+ fs_inst *mul = emit(MUL(acc, op[0], op[1]));
+ fs_inst *mach = emit(MACH(reg_null_d, op[0], op[1]));
+ fs_inst *mov = emit(MOV(this->result, fs_reg(acc)));
+
+ if (brw->gen == 7 && dispatch_width == 16) {
+ mul->force_uncompressed = true;
+ mach->force_uncompressed = true;
+ mov->force_uncompressed = true;
+
+ mul = emit(MUL(acc, half(op[0], 1), half(op[1], 1)));
+ mul->force_sechalf = true;
+ mach = emit(MACH(reg_null_d, half(op[0], 1), half(op[1], 1)));
+ mach->force_sechalf = true;
+ mov = emit(MOV(half(this->result, 1), fs_reg(acc)));
+ mov->force_sechalf = true;
+ }
}
} else {
emit(MUL(this->result, op[0], op[1]));
--
1.8.5.5
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