X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fgenerate.h;h=b82bdca365bc02e7fd856c86f5011eb124517f92;hb=30465dd3b9f55ec42c4b19c3c2077eede7237a26;hp=d0cbc08f279c4b8c12837abf2e0f040b784f6f2b;hpb=8799ec430edae1211dcebf9868e5aec58f951dce;p=libs%2Fgl.git diff --git a/source/glsl/generate.h b/source/glsl/generate.h index d0cbc08f..b82bdca3 100644 --- a/source/glsl/generate.h +++ b/source/glsl/generate.h @@ -11,6 +11,7 @@ namespace Msp { namespace GL { namespace SL { +/** Combines multiple declarations of the same identifier into one. */ class DeclarationCombiner: private TraversingVisitor { private: @@ -27,7 +28,25 @@ private: virtual void visit(VariableDeclaration &); }; -class BlockResolver: private TraversingVisitor +/** Manipulates specialization constants. If values are specified, turns +specialization constants into normal constants. Without values assigns +automatic constant_ids to specialization constants. */ +class ConstantSpecializer: private TraversingVisitor +{ +private: + const std::map *values; + +public: + ConstantSpecializer(); + + void apply(Stage &, const std::map *); + +private: + virtual void visit(VariableDeclaration &); +}; + +/** Forms links between nested blocks in the syntax tree. */ +class BlockHierarchyResolver: private TraversingVisitor { public: void apply(Stage &s) { s.content.visit(*this); } @@ -36,9 +55,12 @@ private: virtual void enter(Block &); }; +/** Resolves variable references. Variable references which match the name +of an interface block are turned into interface block references. */ class VariableResolver: private TraversingVisitor { private: + Stage *stage; Block *builtins; std::map *members; RefPtr iface_ref; @@ -66,19 +88,29 @@ private: virtual void visit(InterfaceBlock &); }; +/** Resolves function declarations and calls. */ class FunctionResolver: private TraversingVisitor { private: + Stage *stage; std::map > functions; public: - void apply(Stage &s) { s.content.visit(*this); } + void apply(Stage &); private: virtual void visit(FunctionCall &); virtual void visit(FunctionDeclaration &); }; +/** Materializes implicitly declared interfaces. + +Out variable declarations inside functions are moved to the global scope. + +Passthrough statements are processed, generating out variables to match in +variables and copying values. + +Unresolved variables are looked up in the previous stage's out variables. */ class InterfaceGenerator: private TraversingVisitor { private: @@ -112,6 +144,8 @@ private: virtual void visit(Passthrough &); }; +/** Reorders declarations to ensure that declarations always appear before +references. */ class DeclarationReorderer: private TraversingVisitor { private: