Add a bunch of validation for declarations in GLSL

[libs/gl.git] / source / glsl / compatibility.h

diff --git a/source/glsl/compatibility.h b/source/glsl/compatibility.h
index 852a6590bd67c287cf272d1a85bc9cfdb746a5c3..212007131e80a3d0e37173364005d68f3b8d1166 100644 (file)
--- 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:
@@ -26,6 +28,8 @@ private:
        virtual void visit(VariableDeclaration &);
 };
 
+/** Removes precision qualifiers from variable declarations, as well as
+default precision declarations. */
 class PrecisionRemover: private TraversingVisitor
 {
 private:
@@ -39,12 +43,14 @@ private:
        virtual void visit(VariableDeclaration &);
 };
 
+/** 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;
@@ -55,6 +61,8 @@ 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;