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st/mesa: make sure to create a "clean" bool when doing i2b

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i2b has to work for all integers, not just 1. INEG would not necessarily
result with all bits set, which is something that other operations can
rely on by e.g. using AND (or INEG for b2i).

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 2b5355c8ab)
This commit is contained in:
Ilia Mirkin 2015-05-06 23:29:33 -04:00 • committed by Emil Velikov
parent 097e70202b
commit 1353ba5397
1 changed files with 1 additions and 1 deletions
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2
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
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@ -1832,7 +1832,7 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
break;
case ir_unop_i2b:
if (native_integers)
emit(ir, TGSI_OPCODE_INEG, result_dst, op[0]);
emit(ir, TGSI_OPCODE_USNE, result_dst, op[0], st_src_reg_for_int(0));
else
emit(ir, TGSI_OPCODE_SNE, result_dst, op[0], st_src_reg_for_float(0.0));
break;