X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fcompatibility.h;h=212007131e80a3d0e37173364005d68f3b8d1166;hb=f2ad2730858046b08e8147297fa01bf3499b86a3;hp=d3a3a74c0dc493fba95e34f06b1b5eb72f8a3266;hpb=c0be4e4ae1a8b6ac31ff6b7080e2242c13d947ff;p=libs%2Fgl.git

diff --git a/source/glsl/compatibility.h b/source/glsl/compatibility.h
index d3a3a74c..21200713 100644
--- a/source/glsl/compatibility.h
+++ b/source/glsl/compatibility.h
@@ -8,6 +8,8 @@ namespace Msp {
 namespace GL {
 namespace SL {
 
+/** Generates default precision declarations if they are missing, to satisfy
+GLSL ES requirements. */
 class DefaultPrecisionGenerator: private TraversingVisitor
 {
 private:
@@ -24,9 +26,10 @@ private:
 	virtual void visit(Block &);
 	virtual void visit(Precision &);
 	virtual void visit(VariableDeclaration &);
-	using TraversingVisitor::visit;
 };
 
+/** Removes precision qualifiers from variable declarations, as well as
+default precision declarations. */
 class PrecisionRemover: private TraversingVisitor
 {
 private:
@@ -38,15 +41,16 @@ public:
 private:
 	virtual void visit(Precision &);
 	virtual void visit(VariableDeclaration &);
-	using TraversingVisitor::visit;
 };
 
+/** Converts structures of the syntax tree to match a particular set of
+features. */
 class LegacyConverter: private TraversingVisitor
 {
 private:
 	Stage *stage;
 	Features features;
-	std::string type;
+	std::string r_type;
 	VariableDeclaration *frag_out;
 	NodeList<Statement>::iterator uniform_insert_point;
 	std::set<Node *> nodes_to_remove;
@@ -57,9 +61,12 @@ public:
 	virtual void apply(Stage &, const Features &);
 
 private:
+	void unsupported(const std::string &);
+
 	virtual void visit(Block &);
 	bool check_version(const Version &) const;
 	bool check_extension(bool Features::*) const;
+	bool supports_stage(Stage::Type) const;
 	bool supports_unified_interface_syntax() const;
 	virtual void visit(VariableReference &);
 	virtual void visit(Assignment &);
@@ -71,7 +78,6 @@ private:
 	virtual void visit(VariableDeclaration &);
 	bool supports_interface_blocks(const std::string &) const;
 	virtual void visit(InterfaceBlock &);
-	using TraversingVisitor::visit;
 };
 
 } // namespace SL