diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/ir_algebraic.cpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/glsl/ir_algebraic.cpp b/src/glsl/ir_algebraic.cpp index b731ba05be9..ff81563f196 100644 --- a/src/glsl/ir_algebraic.cpp +++ b/src/glsl/ir_algebraic.cpp @@ -366,6 +366,58 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) } break; + case ir_binop_logic_and: + /* FINISHME: Also simplify (a && a) to (a). */ + if (is_vec_one(op_const[0])) { + this->progress = true; + return ir->operands[1]; + } else if (is_vec_one(op_const[1])) { + this->progress = true; + return ir->operands[0]; + } else if (is_vec_zero(op_const[0]) || is_vec_zero(op_const[1])) { + this->progress = true; + return ir_constant::zero(mem_ctx, ir->type); + } + break; + + case ir_binop_logic_xor: + /* FINISHME: Also simplify (a ^^ a) to (false). */ + if (is_vec_zero(op_const[0])) { + this->progress = true; + return ir->operands[1]; + } else if (is_vec_zero(op_const[1])) { + this->progress = true; + return ir->operands[0]; + } else if (is_vec_one(op_const[0])) { + this->progress = true; + return new(mem_ctx) ir_expression(ir_unop_logic_not, ir->type, + ir->operands[1], NULL); + } else if (is_vec_one(op_const[1])) { + this->progress = true; + return new(mem_ctx) ir_expression(ir_unop_logic_not, ir->type, + ir->operands[0], NULL); + } + break; + + case ir_binop_logic_or: + /* FINISHME: Also simplify (a || a) to (a). */ + if (is_vec_zero(op_const[0])) { + this->progress = true; + return ir->operands[1]; + } else if (is_vec_zero(op_const[1])) { + this->progress = true; + return ir->operands[0]; + } else if (is_vec_one(op_const[0]) || is_vec_one(op_const[1])) { + ir_constant_data data; + + for (unsigned i = 0; i < 16; i++) + data.b[i] = true; + + this->progress = true; + return new(mem_ctx) ir_constant(ir->type, &data); + } + break; + case ir_unop_rcp: if (op_expr[0] && op_expr[0]->operation == ir_unop_rcp) { this->progress = true; |