diff options
| author | Nicolai Hähnle <[email protected]> | 2017-06-12 10:53:07 +0200 |
|---|---|---|
| committer | Nicolai Hähnle <[email protected]> | 2017-06-19 12:07:05 +0200 |
| commit | b28938ffce0580e89e6012826900da2b6013b0df (patch) | |
| tree | 3f4c46547a196f91d25cf3ca25af5b59c463983f | |
| parent | 25e5534734b7de2a2359c42eeff5fd0c3c0507da (diff) | |
st/glsl_to_tgsi: use correct writemask when converting generic intrinsics
This fixes a bug when lowering ballotARB: previously, using writemask 0xf,
emit_asm would create TGSI_OPCODE_BALLOT instructions that span two registers
to cover 4 64-bit channels. This could trample over other a neighbouring
temporary.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101360
Cc: 17.1 <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
| -rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index 24d417d6709..7852941acd2 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -3978,6 +3978,8 @@ glsl_to_tgsi_visitor::visit_generic_intrinsic(ir_call *ir, unsigned op) ir->return_deref->accept(this); st_dst_reg dst = st_dst_reg(this->result); + dst.writemask = u_bit_consecutive(0, ir->return_deref->var->type->vector_elements); + st_src_reg src[4] = { undef_src, undef_src, undef_src, undef_src }; unsigned num_src = 0; foreach_in_list(ir_rvalue, param, &ir->actual_parameters) { |