Refresh lighting and culling uniforms if the camera changes in pop_state

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

diff --git a/source/programcompiler.h b/source/programcompiler.h
index 1c76d63f8ccb4201da8b6429abfad5f37e636b4b..46c37930d6d4e948299f6ef43b637746dc3e4256 100644 (file)
--- a/source/programcompiler.h
+++ b/source/programcompiler.h
@@ -9,29 +9,37 @@ namespace Msp {
 namespace GL {
 
 class Program;
+class Resources;
 
 class ProgramCompiler
 {
 private:
        struct Visitor: ProgramSyntax::TraversingVisitor
        {
+               typedef void ResultType;
+
                ProgramSyntax::Stage *stage;
 
                Visitor();
 
                virtual void apply(ProgramSyntax::Stage &);
+               void get_result() const { }
        };
 
        struct Formatter: Visitor
        {
+               typedef std::string ResultType;
+
                std::string formatted;
                unsigned indent;
                bool parameter_list;
-               bool else_if;
+               unsigned else_if;
                std::string block_interface;
 
                Formatter();
 
+               virtual void apply(ProgramSyntax::Stage &);
+               const std::string &get_result() const { return formatted; }
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::Literal &);
                virtual void visit(ProgramSyntax::ParenthesizedExpression &);
@@ -42,7 +50,9 @@ private:
                virtual void visit(ProgramSyntax::Assignment &);
                virtual void visit(ProgramSyntax::FunctionCall &);
                virtual void visit(ProgramSyntax::ExpressionStatement &);
+               virtual void visit(ProgramSyntax::Import &);
                virtual void visit(ProgramSyntax::Layout &);
+               virtual void visit(ProgramSyntax::InterfaceLayout &);
                virtual void visit(ProgramSyntax::StructDeclaration &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
                virtual void visit(ProgramSyntax::InterfaceBlock &);
@@ -52,6 +62,31 @@ private:
                virtual void visit(ProgramSyntax::Return &);
        };
 
+       template<typename T>
+       struct NodeGatherer: Visitor
+       {
+               typedef std::list<T *> ResultType;
+
+               std::list<T *> nodes;
+
+               const ResultType &get_result() const { return nodes; }
+               virtual void visit(T &n) { nodes.push_back(&n); }
+       };
+
+       struct DeclarationCombiner: Visitor
+       {
+               bool toplevel;
+               std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
+               std::map<std::string, ProgramSyntax::VariableDeclaration *> variables;
+               bool remove_node;
+
+               DeclarationCombiner();
+
+               virtual void visit(ProgramSyntax::Block &);
+               virtual void visit(ProgramSyntax::FunctionDeclaration &);
+               virtual void visit(ProgramSyntax::VariableDeclaration &);
+       };
+
        struct VariableResolver: Visitor
        {
                std::vector<ProgramSyntax::Block *> blocks;
@@ -75,14 +110,32 @@ private:
                virtual void visit(ProgramSyntax::InterfaceBlock &);
        };
 
-       struct InterfaceGenerator: Visitor
+       struct FunctionResolver: Visitor
+       {
+               std::map<std::string, std::vector<ProgramSyntax::FunctionDeclaration *> > functions;
+
+               virtual void visit(ProgramSyntax::FunctionCall &);
+               virtual void visit(ProgramSyntax::FunctionDeclaration &);
+       };
+
+       struct BlockModifier: Visitor
+       {
+               bool remove_node;
+               std::list<RefPtr<ProgramSyntax::Node> > insert_nodes;
+
+               BlockModifier();
+
+               void flatten_block(ProgramSyntax::Block &);
+               void apply_and_increment(ProgramSyntax::Block &, std::list<RefPtr<ProgramSyntax::Node> >::iterator &);
+               virtual void visit(ProgramSyntax::Block &);
+       };
+
+       struct InterfaceGenerator: BlockModifier
        {
                std::string in_prefix;
                std::string out_prefix;
                unsigned scope_level;
-               std::map<std::string, ProgramSyntax::VariableDeclaration *> iface_declarations;
-               bool remove_node;
-               std::list<ProgramSyntax::Node *> insert_nodes;
+               std::map<std::string, RefPtr<ProgramSyntax::VariableDeclaration> > iface_declarations;
 
                InterfaceGenerator();
 
@@ -103,6 +156,93 @@ private:
                virtual void visit(ProgramSyntax::VariableDeclaration &);
        };
 
+       struct DeclarationReorderer: Visitor
+       {
+               enum DeclarationKind
+               {
+                       NO_DECLARATION,
+                       LAYOUT,
+                       STRUCT,
+                       VARIABLE,
+                       FUNCTION
+               };
+
+               DeclarationKind kind;
+
+               DeclarationReorderer();
+
+               virtual void visit(ProgramSyntax::Block &);
+               virtual void visit(ProgramSyntax::InterfaceLayout &) { kind = LAYOUT; }
+               virtual void visit(ProgramSyntax::StructDeclaration &) { kind = STRUCT; }
+               virtual void visit(ProgramSyntax::VariableDeclaration &) { kind = VARIABLE; }
+               virtual void visit(ProgramSyntax::InterfaceBlock &) { kind = VARIABLE; }
+               virtual void visit(ProgramSyntax::FunctionDeclaration &) { kind = FUNCTION; }
+       };
+
+       struct InlineableFunctionLocator: Visitor
+       {
+               typedef std::set<ProgramSyntax::FunctionDeclaration *> ResultType;
+
+               std::map<ProgramSyntax::FunctionDeclaration *, unsigned> refcounts;
+               std::set<ProgramSyntax::FunctionDeclaration *> inlineable;
+               ProgramSyntax::FunctionDeclaration *in_function;
+
+               InlineableFunctionLocator();
+
+               const ResultType &get_result() const { return inlineable; }
+               virtual void visit(ProgramSyntax::FunctionCall &);
+               virtual void visit(ProgramSyntax::FunctionDeclaration &);
+       };
+
+       struct FunctionInliner: Visitor
+       {
+               std::set<ProgramSyntax::FunctionDeclaration *> inlineable;
+               unsigned extract_result;
+               RefPtr<ProgramSyntax::Expression> inline_result;
+
+               FunctionInliner();
+               FunctionInliner(const std::set<ProgramSyntax::FunctionDeclaration *> &);
+
+               void visit_and_inline(RefPtr<ProgramSyntax::Expression> &);
+               virtual void visit(ProgramSyntax::Block &);
+               virtual void visit(ProgramSyntax::UnaryExpression &);
+               virtual void visit(ProgramSyntax::BinaryExpression &);
+               virtual void visit(ProgramSyntax::FunctionCall &);
+               virtual void visit(ProgramSyntax::Return &);
+       };
+
+       struct ExpressionEvaluator: ProgramSyntax::NodeVisitor
+       {
+               typedef std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Expression *> ValueMap;
+
+               const ValueMap *variable_values;
+               float result;
+               bool result_valid;
+
+               ExpressionEvaluator();
+               ExpressionEvaluator(const ValueMap &);
+
+               virtual void visit(ProgramSyntax::Literal &);
+               virtual void visit(ProgramSyntax::ParenthesizedExpression &);
+               virtual void visit(ProgramSyntax::VariableReference &);
+               virtual void visit(ProgramSyntax::UnaryExpression &);
+               virtual void visit(ProgramSyntax::BinaryExpression &);
+       };
+
+       struct ConstantConditionEliminator: BlockModifier
+       {
+               unsigned scope_level;
+               ExpressionEvaluator::ValueMap variable_values;
+
+               ConstantConditionEliminator();
+
+               virtual void visit(ProgramSyntax::Block &);
+               virtual void visit(ProgramSyntax::Assignment &);
+               virtual void visit(ProgramSyntax::VariableDeclaration &);
+               virtual void visit(ProgramSyntax::Conditional &);
+               virtual void visit(ProgramSyntax::Iteration &);
+       };
+
        struct UnusedVariableLocator: Visitor
        {
                struct AssignmentList
@@ -112,6 +252,7 @@ private:
                        bool self_referencing;
                };
 
+               typedef std::set<ProgramSyntax::Node *> ResultType;
                typedef std::map<ProgramSyntax::VariableDeclaration *, AssignmentList> BlockAssignmentMap;
 
                std::set<ProgramSyntax::Node *> unused_nodes;
@@ -124,6 +265,7 @@ private:
                UnusedVariableLocator();
 
                virtual void apply(ProgramSyntax::Stage &);
+               const ResultType &get_result() const { return unused_nodes; }
                virtual void visit(ProgramSyntax::VariableReference &);
                virtual void visit(ProgramSyntax::MemberAccess &);
                virtual void visit(ProgramSyntax::BinaryExpression &);
@@ -139,14 +281,46 @@ private:
                virtual void visit(ProgramSyntax::Iteration &);
        };
 
+       struct UnusedFunctionLocator: Visitor
+       {
+               typedef std::set<ProgramSyntax::Node *> ResultType;
+
+               std::set<ProgramSyntax::Node *> unused_nodes;
+               std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
+
+               const ResultType &get_result() const { return unused_nodes; }
+               virtual void visit(ProgramSyntax::FunctionCall &);
+               virtual void visit(ProgramSyntax::FunctionDeclaration &);
+       };
+
        struct NodeRemover: Visitor
        {
                std::set<ProgramSyntax::Node *> to_remove;
 
+               NodeRemover() { }
+               NodeRemover(const std::set<ProgramSyntax::Node *> &);
+
                virtual void visit(ProgramSyntax::Block &);
                virtual void visit(ProgramSyntax::VariableDeclaration &);
        };
 
+       struct LegacyConverter: BlockModifier
+       {
+               Version target_version;
+               std::string type;
+               std::string frag_out_name;
+
+               LegacyConverter();
+               LegacyConverter(const Version &);
+
+               bool check_version(const Version &);
+               virtual void visit(ProgramSyntax::VariableReference &);
+               virtual void visit(ProgramSyntax::FunctionCall &);
+               virtual void visit(ProgramSyntax::VariableDeclaration &);
+               virtual void visit(ProgramSyntax::InterfaceBlock &);
+       };
+
+       Resources *resources;
        ProgramParser parser;
        ProgramSyntax::Module *module;
 
@@ -154,7 +328,7 @@ public:
        ProgramCompiler();
 
        void compile(const std::string &);
-       void compile(IO::Base &);
+       void compile(IO::Base &, Resources * = 0);
        void add_shaders(Program &);
 
 private:
@@ -162,12 +336,14 @@ private:
        static ProgramSyntax::Module &get_builtins_module();
        static ProgramSyntax::Stage *get_builtins(ProgramSyntax::StageType);
        void process();
+       void import(const std::string &);
        void generate(ProgramSyntax::Stage &);
        bool optimize(ProgramSyntax::Stage &);
        static void inject_block(ProgramSyntax::Block &, const ProgramSyntax::Block &);
        template<typename T>
-       static void apply(ProgramSyntax::Stage &);
-       std::string create_source(ProgramSyntax::Stage &);
+       static typename T::ResultType apply(ProgramSyntax::Stage &);
+       template<typename T, typename A>
+       static typename T::ResultType apply(ProgramSyntax::Stage &, const A &);
 };
 
 } // namespace GL