From: Nicolai Hähnle <nicolai.haeh...@amd.com> 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 <mesa-sta...@lists.freedesktop.org> --- src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index c5d2e0f..cb86392 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -3906,20 +3906,22 @@ glsl_to_tgsi_visitor::visit_image_intrinsic(ir_call *ir) if (imgvar->data.memory_volatile) inst->buffer_access |= TGSI_MEMORY_VOLATILE; } void 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) { assert(num_src < ARRAY_SIZE(src)); this->result.file = PROGRAM_UNDEFINED; param->accept(this); assert(this->result.file != PROGRAM_UNDEFINED); src[num_src] = this->result; -- 2.9.3 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
