From b8a77c943fa53005b6cdb1ab792acf5ff0a131be Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 18 Oct 2013 11:23:37 +0200 Subject: mesa pixman git update 18 okt 2013 pixman commit 3c2f4b651747c1ac484c39d5128cae5483094342 mesa commit 9aad1ba70fad7bfa45778faa5a91235f8302264f --- mesalib/src/glsl/opt_algebraic.cpp | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'mesalib/src/glsl/opt_algebraic.cpp') diff --git a/mesalib/src/glsl/opt_algebraic.cpp b/mesalib/src/glsl/opt_algebraic.cpp index d706a6ad1..3e5802e18 100644 --- a/mesalib/src/glsl/opt_algebraic.cpp +++ b/mesalib/src/glsl/opt_algebraic.cpp @@ -84,6 +84,12 @@ is_vec_one(ir_constant *ir) return (ir == NULL) ? false : ir->is_one(); } +static inline bool +is_vec_negative_one(ir_constant *ir) +{ + return (ir == NULL) ? false : ir->is_negative_one(); +} + static inline bool is_vec_basis(ir_constant *ir) { @@ -287,6 +293,23 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) this->progress = true; return ir_constant::zero(ir, ir->type); } + if (is_vec_negative_one(op_const[0])) { + this->progress = true; + temp = new(mem_ctx) ir_expression(ir_unop_neg, + ir->operands[1]->type, + ir->operands[1], + NULL); + return swizzle_if_required(ir, temp); + } + if (is_vec_negative_one(op_const[1])) { + this->progress = true; + temp = new(mem_ctx) ir_expression(ir_unop_neg, + ir->operands[0]->type, + ir->operands[0], + NULL); + return swizzle_if_required(ir, temp); + } + /* Reassociate multiplication of constants so that we can do * constant folding. -- cgit v1.2.3