diff options
| author | Francisco Jerez <[email protected]> | 2017-01-23 23:53:03 -0800 |
|---|---|---|
| committer | Francisco Jerez <[email protected]> | 2017-01-31 10:32:42 -0800 |
| commit | e81130d7a146fe6a750bf903e910dc2c7c90d513 (patch) | |
| tree | d425178752a8cc2a5f6989d85eaef3e530a66737 /src | |
| parent | 56314f5bafdfeb514adf8401c52f216bd430bbb2 (diff) | |
mesa/program: Translate csel operation from GLSL IR.
This will be used internally by the GLSL front-end in order to
implement some built-in functions. Plumb it through MESA IR for
back-ends that rely on this translation pass.
v2: Add comment.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Juan A. Suarez Romero <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/program/ir_to_mesa.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp index 0ae797f1eca..dc5f8016f37 100644 --- a/src/mesa/program/ir_to_mesa.cpp +++ b/src/mesa/program/ir_to_mesa.cpp @@ -1360,13 +1360,20 @@ ir_to_mesa_visitor::visit(ir_expression *ir) emit(ir, OPCODE_LRP, result_dst, op[2], op[1], op[0]); break; + case ir_triop_csel: + /* We assume that boolean true and false are 1.0 and 0.0. OPCODE_CMP + * selects src1 if src0 is < 0, src2 otherwise. + */ + op[0].negate = ~op[0].negate; + emit(ir, OPCODE_CMP, result_dst, op[0], op[1], op[2]); + break; + case ir_binop_vector_extract: case ir_triop_fma: case ir_triop_bitfield_extract: case ir_triop_vector_insert: case ir_quadop_bitfield_insert: case ir_binop_ldexp: - case ir_triop_csel: case ir_binop_carry: case ir_binop_borrow: case ir_binop_imul_high: |