diff options
| author | Fernando Sahmkow <fsahmkow27@gmail.com> | 2019-06-28 20:54:21 -0400 |
|---|---|---|
| committer | FernandoS27 <fsahmkow27@gmail.com> | 2019-10-04 18:52:48 -0400 |
| commit | 8be6e1c5221066a49b6ad27efbd20a999a7c16b3 (patch) | |
| tree | a00263eb962503bec08ec4bc870a9546c3b80d22 /src/video_core/shader/expr.cpp | |
| parent | 4fde66e6094b57201d208b8abd3d7715341cd5db (diff) | |
shader_ir: Corrections to outward movements and misc stuffs
Diffstat (limited to 'src/video_core/shader/expr.cpp')
| -rw-r--r-- | src/video_core/shader/expr.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/video_core/shader/expr.cpp b/src/video_core/shader/expr.cpp new file mode 100644 index 0000000000..ebce6339bd --- /dev/null +++ b/src/video_core/shader/expr.cpp @@ -0,0 +1,75 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <memory> +#include <variant> + +#include "video_core/shader/expr.h" + +namespace VideoCommon::Shader { + +bool ExprAnd::operator==(const ExprAnd& b) const { + return (*operand1 == *b.operand1) && (*operand2 == *b.operand2); +} + +bool ExprOr::operator==(const ExprOr& b) const { + return (*operand1 == *b.operand1) && (*operand2 == *b.operand2); +} + +bool ExprNot::operator==(const ExprNot& b) const { + return (*operand1 == *b.operand1); +} + +bool ExprIsBoolean(Expr expr) { + return std::holds_alternative<ExprBoolean>(*expr); +} + +bool ExprBooleanGet(Expr expr) { + return std::get_if<ExprBoolean>(expr.get())->value; +} + +Expr MakeExprNot(Expr first) { + if (std::holds_alternative<ExprNot>(*first)) { + return std::get_if<ExprNot>(first.get())->operand1; + } + return MakeExpr<ExprNot>(first); +} + +Expr MakeExprAnd(Expr first, Expr second) { + if (ExprIsBoolean(first)) { + return ExprBooleanGet(first) ? second : first; + } + if (ExprIsBoolean(second)) { + return ExprBooleanGet(second) ? first : second; + } + return MakeExpr<ExprAnd>(first, second); +} + +Expr MakeExprOr(Expr first, Expr second) { + if (ExprIsBoolean(first)) { + return ExprBooleanGet(first) ? first : second; + } + if (ExprIsBoolean(second)) { + return ExprBooleanGet(second) ? second : first; + } + return MakeExpr<ExprOr>(first, second); +} + +bool ExprAreEqual(Expr first, Expr second) { + return (*first) == (*second); +} + +bool ExprAreOpposite(Expr first, Expr second) { + if (std::holds_alternative<ExprNot>(*first)) { + return ExprAreEqual(std::get_if<ExprNot>(first.get())->operand1, second); + } + if (std::holds_alternative<ExprNot>(*second)) { + return ExprAreEqual(std::get_if<ExprNot>(second.get())->operand1, first); + } + return false; +} + +} // namespace VideoCommon::Shader |