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Shader: Implement const if and const values

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This commit is contained in:
Jérôme Leclercq
2021-07-07 21:38:23 +02:00
parent d679eccb43
commit 1f6937ab1b
28 changed files with 315 additions and 60 deletions
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11
include/Nazara/Shader/ShaderBuilder.hpp
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@@ -38,6 +38,7 @@ namespace Nz::ShaderBuilder
inline std::unique_ptr<ShaderAst::BinaryExpression> operator()(ShaderAst::BinaryType op, ShaderAst::ExpressionPtr left, ShaderAst::ExpressionPtr right) const;
};
template<bool Const>
struct Branch
{
inline std::unique_ptr<ShaderAst::BranchStatement> operator()(ShaderAst::ExpressionPtr condition, ShaderAst::StatementPtr truePath, ShaderAst::StatementPtr falsePath = nullptr) const;
@@ -70,6 +71,12 @@ namespace Nz::ShaderBuilder
inline std::unique_ptr<ShaderAst::ConstantExpression> operator()(ShaderAst::ConstantValue value) const;
};
struct DeclareConst
{
inline std::unique_ptr<ShaderAst::DeclareConstStatement> operator()(std::string name, ShaderAst::ExpressionPtr initialValue) const;
inline std::unique_ptr<ShaderAst::DeclareConstStatement> operator()(std::string name, ShaderAst::ExpressionType type, ShaderAst::ExpressionPtr initialValue = nullptr) const;
};
struct DeclareFunction
{
inline std::unique_ptr<ShaderAst::DeclareFunctionStatement> operator()(std::string name, ShaderAst::StatementPtr statement) const;
@@ -144,12 +151,14 @@ namespace Nz::ShaderBuilder
constexpr Impl::AccessMember AccessMember;
constexpr Impl::Assign Assign;
constexpr Impl::Binary Binary;
constexpr Impl::Branch Branch;
constexpr Impl::Branch<false> Branch;
constexpr Impl::CallFunction CallFunction;
constexpr Impl::Cast Cast;
constexpr Impl::ConditionalExpression ConditionalExpression;
constexpr Impl::ConditionalStatement ConditionalStatement;
constexpr Impl::Constant Constant;
constexpr Impl::Branch<true> ConstBranch;
constexpr Impl::DeclareConst DeclareConst;
constexpr Impl::DeclareFunction DeclareFunction;
constexpr Impl::DeclareOption DeclareOption;
constexpr Impl::DeclareStruct DeclareStruct;