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| author | Matt Turner <mattst88@gmail.com> | 2015-03-18 10:39:38 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2015-03-24 14:43:37 -0700 |
| commit | b481ebbe399fdc6386fd52f890ba7c310d333ed5 (patch) | |
| tree | de4c3c61ba726eb2aacc9737bae30488cb1f9d17 /src/glsl/opt_algebraic.cpp | |
| parent | c8e8f660365515560af029651e593f7ee700401c (diff) | |
| download | external_mesa3d-b481ebbe399fdc6386fd52f890ba7c310d333ed5.zip external_mesa3d-b481ebbe399fdc6386fd52f890ba7c310d333ed5.tar.gz external_mesa3d-b481ebbe399fdc6386fd52f890ba7c310d333ed5.tar.bz2 | |
glsl: Recognize sat(add(b2f(a), b2f(b))) as a logical OR.
Transform this into b2f(or(a, b)).
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Diffstat (limited to 'src/glsl/opt_algebraic.cpp')
| -rw-r--r-- | src/glsl/opt_algebraic.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp index 0d1f3fc..98c852a 100644 --- a/src/glsl/opt_algebraic.cpp +++ b/src/glsl/opt_algebraic.cpp @@ -421,6 +421,18 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) break; } + case ir_unop_saturate: + if (op_expr[0] && op_expr[0]->operation == ir_binop_add) { + ir_expression *b2f_0 = op_expr[0]->operands[0]->as_expression(); + ir_expression *b2f_1 = op_expr[0]->operands[1]->as_expression(); + + if (b2f_0 && b2f_0->operation == ir_unop_b2f && + b2f_1 && b2f_1->operation == ir_unop_b2f) { + return b2f(logic_or(b2f_0->operands[0], b2f_1->operands[0])); + } + } + break; + case ir_binop_add: if (is_vec_zero(op_const[0])) return ir->operands[1]; |