Support precision qualifiers in shaders

[libs/gl.git] / source / programcompiler.h

diff --git a/source/programcompiler.h b/source/programcompiler.h
index 0ff4f667d3feb830013d30c908a4eb97847b4ec4..daf2a5db7904988f9e782e300b25e88ebcc47835 100644 (file)
--- a/source/programcompiler.h
+++ b/source/programcompiler.h
@@ -40,6 +40,7 @@ private:
 
                virtual void apply(ProgramSyntax::Stage &);
                const std::string &get_result() const { return formatted; }
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::Literal &);
                virtual void visit(ProgramSyntax::ParenthesizedExpression &);
@@ -51,6 +52,7 @@ private:
                virtual void visit(ProgramSyntax::FunctionCall &);
                virtual void visit(ProgramSyntax::ExpressionStatement &);
                virtual void visit(ProgramSyntax::Import &);
+               virtual void visit(ProgramSyntax::Precision &);
                virtual void visit(ProgramSyntax::Layout &);
                virtual void visit(ProgramSyntax::InterfaceLayout &);
                virtual void visit(ProgramSyntax::StructDeclaration &);
@@ -71,6 +73,7 @@ private:
                std::list<T *> nodes;
 
                const ResultType &get_result() const { return nodes; }
+               using Visitor::visit;
                virtual void visit(T &n) { nodes.push_back(&n); }
        };
 
@@ -83,6 +86,7 @@ private:
 
                DeclarationCombiner();
 
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::FunctionDeclaration &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
@@ -101,6 +105,7 @@ private:
                VariableResolver();
 
                virtual void apply(ProgramSyntax::Stage &);
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::VariableReference &);
                virtual void visit(ProgramSyntax::MemberAccess &);
@@ -115,6 +120,7 @@ private:
        {
                std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
 
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::FunctionCall &);
                virtual void visit(ProgramSyntax::FunctionDeclaration &);
        };
@@ -128,6 +134,7 @@ private:
 
                void flatten_block(ProgramSyntax::Block &);
                void apply_and_increment(ProgramSyntax::Block &, std::list<RefPtr<ProgramSyntax::Node> >::iterator &);
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
        };
 
@@ -142,6 +149,7 @@ private:
 
                static std::string get_out_prefix(ProgramSyntax::StageType);
                virtual void apply(ProgramSyntax::Stage &);
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                std::string change_prefix(const std::string &, const std::string &) const;
                bool generate_interface(ProgramSyntax::VariableDeclaration &, const std::string &, const std::string &);
@@ -153,6 +161,7 @@ private:
 
        struct VariableRenamer: Visitor
        {
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::VariableReference &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
        };
@@ -172,6 +181,7 @@ private:
 
                DeclarationReorderer();
 
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::InterfaceLayout &) { kind = LAYOUT; }
                virtual void visit(ProgramSyntax::StructDeclaration &) { kind = STRUCT; }
@@ -191,6 +201,7 @@ private:
                InlineableFunctionLocator();
 
                const ResultType &get_result() const { return inlineable; }
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::FunctionCall &);
                virtual void visit(ProgramSyntax::FunctionDeclaration &);
        };
@@ -205,6 +216,7 @@ private:
                FunctionInliner(const std::set<ProgramSyntax::FunctionDeclaration *> &);
 
                void visit_and_inline(RefPtr<ProgramSyntax::Expression> &);
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::UnaryExpression &);
                virtual void visit(ProgramSyntax::BinaryExpression &);
@@ -223,6 +235,7 @@ private:
                ExpressionEvaluator();
                ExpressionEvaluator(const ValueMap &);
 
+               using ProgramSyntax::NodeVisitor::visit;
                virtual void visit(ProgramSyntax::Literal &);
                virtual void visit(ProgramSyntax::ParenthesizedExpression &);
                virtual void visit(ProgramSyntax::VariableReference &);
@@ -237,6 +250,7 @@ private:
 
                ConstantConditionEliminator();
 
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::Assignment &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
@@ -271,11 +285,13 @@ private:
 
                virtual void apply(ProgramSyntax::Stage &);
                const ResultType &get_result() const { return unused_nodes; }
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::VariableReference &);
                virtual void visit(ProgramSyntax::MemberAccess &);
                virtual void visit(ProgramSyntax::BinaryExpression &);
                virtual void visit(ProgramSyntax::Assignment &);
                void record_assignment(ProgramSyntax::VariableDeclaration &, ProgramSyntax::Node &, bool);
+               void clear_assignments(VariableInfo &, bool);
                virtual void visit(ProgramSyntax::ExpressionStatement &);
                virtual void visit(ProgramSyntax::StructDeclaration &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
@@ -294,6 +310,7 @@ private:
                std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
 
                const ResultType &get_result() const { return unused_nodes; }
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::FunctionCall &);
                virtual void visit(ProgramSyntax::FunctionDeclaration &);
        };
@@ -305,23 +322,51 @@ private:
                NodeRemover() { }
                NodeRemover(const std::set<ProgramSyntax::Node *> &);
 
+               using Visitor::visit;
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
        };
 
+       struct PrecisionRemover: BlockModifier
+       {
+               using Visitor::visit;
+               virtual void visit(ProgramSyntax::Precision &);
+               virtual void visit(ProgramSyntax::VariableDeclaration &);
+       };
+
+       struct DefaultPrecisionGenerator: BlockModifier
+       {
+               bool toplevel;
+               std::set<std::string> have_default;
+
+               DefaultPrecisionGenerator();
+
+               using Visitor::visit;
+               virtual void visit(ProgramSyntax::Block &);
+               virtual void visit(ProgramSyntax::Precision &);
+               virtual void visit(ProgramSyntax::VariableDeclaration &);
+       };
+
        struct LegacyConverter: BlockModifier
        {
+               GLApi target_api;
                Version target_version;
                std::string type;
-               std::string frag_out_name;
+               ProgramSyntax::VariableDeclaration *frag_out;
 
                LegacyConverter();
                LegacyConverter(const Version &);
 
-               bool check_version(const Version &);
+               bool check_version(const Version &) const;
+               using Visitor::visit;
+               bool supports_unified_interface_syntax() const;
                virtual void visit(ProgramSyntax::VariableReference &);
+               virtual void visit(ProgramSyntax::Assignment &);
+               bool supports_unified_sampling_functions() const;
                virtual void visit(ProgramSyntax::FunctionCall &);
+               bool supports_interface_layouts() const;
                virtual void visit(ProgramSyntax::VariableDeclaration &);
+               bool supports_interface_blocks(const std::string &) const;
                virtual void visit(ProgramSyntax::InterfaceBlock &);
        };
 
@@ -344,6 +389,7 @@ private:
        void import(const std::string &);
        void generate(ProgramSyntax::Stage &);
        bool optimize(ProgramSyntax::Stage &);
+       void finalize(ProgramSyntax::Stage &);
        static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
        template<typename T>
        static typename T::ResultType apply(ProgramSyntax::Stage &);