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ShaderLang: Proof of concept (add support for a lot of things)

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Jérôme Leclercq
2021-03-31 10:21:35 +02:00
parent 2a73005295
commit c1d1838336
37 changed files with 2259 additions and 908 deletions
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41
include/Nazara/Shader/ShaderBuilder.hpp
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@@ -15,6 +15,11 @@ namespace Nz::ShaderBuilder
{
namespace Impl
{
struct Assign
{
inline std::unique_ptr<ShaderAst::AssignExpression> operator()(ShaderAst::AssignType op, ShaderAst::ExpressionPtr left, ShaderAst::ExpressionPtr right) const;
};
struct Binary
{
inline std::unique_ptr<ShaderAst::BinaryExpression> operator()(ShaderAst::BinaryType op, ShaderAst::ExpressionPtr left, ShaderAst::ExpressionPtr right) const;
@@ -26,6 +31,11 @@ namespace Nz::ShaderBuilder
inline std::unique_ptr<ShaderAst::BranchStatement> operator()(std::vector<ShaderAst::BranchStatement::ConditionalStatement> condStatements, ShaderAst::StatementPtr elseStatement = nullptr) const;
};
struct Cast
{
inline std::unique_ptr<ShaderAst::CastExpression> operator()(ShaderAst::ExpressionType targetType, std::vector<ShaderAst::ExpressionPtr> expressions) const;
};
struct Constant
{
inline std::unique_ptr<ShaderAst::ConstantExpression> operator()(ShaderConstantValue value) const;
@@ -33,13 +43,24 @@ namespace Nz::ShaderBuilder
struct DeclareFunction
{
inline std::unique_ptr<ShaderAst::DeclareFunctionStatement> operator()(std::string name, std::vector<ShaderAst::DeclareFunctionStatement::Parameter> parameters, std::vector<ShaderAst::StatementPtr> statements, ShaderAst::ShaderExpressionType returnType = ShaderAst::BasicType::Void) const;
inline std::unique_ptr<ShaderAst::DeclareFunctionStatement> operator()(std::vector<ShaderAst::Attribute> attributes, std::string name, std::vector<ShaderAst::DeclareFunctionStatement::Parameter> parameters, std::vector<ShaderAst::StatementPtr> statements, ShaderAst::ShaderExpressionType returnType = ShaderAst::BasicType::Void) const;
inline std::unique_ptr<ShaderAst::DeclareFunctionStatement> operator()(std::string name, std::vector<ShaderAst::DeclareFunctionStatement::Parameter> parameters, std::vector<ShaderAst::StatementPtr> statements, ShaderAst::ExpressionType returnType = ShaderAst::NoType{}) const;
inline std::unique_ptr<ShaderAst::DeclareFunctionStatement> operator()(std::vector<ShaderAst::Attribute> attributes, std::string name, std::vector<ShaderAst::DeclareFunctionStatement::Parameter> parameters, std::vector<ShaderAst::StatementPtr> statements, ShaderAst::ExpressionType returnType = ShaderAst::NoType{}) const;
};
struct DeclareStruct
{
inline std::unique_ptr<ShaderAst::DeclareStructStatement> operator()(ShaderAst::StructDescription description) const;
inline std::unique_ptr<ShaderAst::DeclareStructStatement> operator()(std::vector<ShaderAst::Attribute> attributes, ShaderAst::StructDescription description) const;
};
struct DeclareVariable
{
inline std::unique_ptr<ShaderAst::DeclareVariableStatement> operator()(std::string name, ShaderAst::ShaderExpressionType type, ShaderAst::ExpressionPtr initialValue = nullptr) const;
inline std::unique_ptr<ShaderAst::DeclareVariableStatement> operator()(std::string name, ShaderAst::ExpressionType type, ShaderAst::ExpressionPtr initialValue = nullptr) const;
};
struct ExpressionStatement
{
inline std::unique_ptr<ShaderAst::ExpressionStatement> operator()(ShaderAst::ExpressionPtr expression) const;
};
struct Identifier
@@ -47,9 +68,9 @@ namespace Nz::ShaderBuilder
inline std::unique_ptr<ShaderAst::IdentifierExpression> operator()(std::string name) const;
};
struct Return
struct Intrinsic
{
inline std::unique_ptr<ShaderAst::ReturnStatement> operator()(ShaderAst::ExpressionPtr expr = nullptr) const;
inline std::unique_ptr<ShaderAst::IntrinsicExpression> operator()(ShaderAst::IntrinsicType intrinsicType, std::vector<ShaderAst::ExpressionPtr> parameters) const;
};
template<typename T>
@@ -57,15 +78,25 @@ namespace Nz::ShaderBuilder
{
std::unique_ptr<T> operator()() const;
};
struct Return
{
inline std::unique_ptr<ShaderAst::ReturnStatement> operator()(ShaderAst::ExpressionPtr expr = nullptr) const;
};
}
constexpr Impl::Assign Assign;
constexpr Impl::Binary Binary;
constexpr Impl::Branch Branch;
constexpr Impl::Cast Cast;
constexpr Impl::Constant Constant;
constexpr Impl::DeclareFunction DeclareFunction;
constexpr Impl::DeclareStruct DeclareStruct;
constexpr Impl::DeclareVariable DeclareVariable;
constexpr Impl::ExpressionStatement ExpressionStatement;
constexpr Impl::NoParam<ShaderAst::DiscardStatement> Discard;
constexpr Impl::Identifier Identifier;
constexpr Impl::Intrinsic Intrinsic;
constexpr Impl::NoParam<ShaderAst::NoOpStatement> NoOp;
constexpr Impl::Return Return;
}