X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fcompatibility.h;fp=source%2Fglsl%2Fcompatibility.h;h=f33768767b0b0909614e9c8181cf26a32cf66487;hb=696a97bd7411d69953c1a9e4b5f3dfb4c1d848f1;hp=0000000000000000000000000000000000000000;hpb=c1ec86d6b9ceb6c71f787fed3b2ea6c75457a474;p=libs%2Fgl.git

diff --git a/source/glsl/compatibility.h b/source/glsl/compatibility.h
new file mode 100644
index 00000000..f3376876
--- /dev/null
+++ b/source/glsl/compatibility.h
@@ -0,0 +1,67 @@
+#ifndef MSP_GL_SL_COMPATIBILITY_H_
+#define MSP_GL_SL_COMPATIBILITY_H_
+
+#include <string>
+#include "visitor.h"
+
+namespace Msp {
+namespace GL {
+namespace SL {
+
+class DefaultPrecisionGenerator: public BlockModifier
+{
+private:
+	bool toplevel;
+	std::set<std::string> have_default;
+
+public:
+	DefaultPrecisionGenerator();
+
+	using StageVisitor::visit;
+	virtual void visit(Block &);
+	virtual void visit(Precision &);
+	virtual void visit(VariableDeclaration &);
+};
+
+class PrecisionRemover: public BlockModifier
+{
+public:
+	using StageVisitor::visit;
+	virtual void visit(Precision &);
+	virtual void visit(VariableDeclaration &);
+};
+
+class LegacyConverter: public BlockModifier
+{
+private:
+	GLApi target_api;
+	Version target_version;
+	std::string type;
+	VariableDeclaration *frag_out;
+
+public:
+	LegacyConverter();
+	LegacyConverter(const Version &);
+
+private:
+	bool check_version(const Version &) const;
+	bool check_extension(const Extension &) const;
+	using StageVisitor::visit;
+	bool supports_unified_interface_syntax() const;
+	virtual void visit(VariableReference &);
+	virtual void visit(Assignment &);
+	bool supports_unified_sampling_functions() const;
+	virtual void visit(FunctionCall &);
+	bool supports_interface_layouts() const;
+	bool supports_centroid_sampling() const;
+	bool supports_sample_sampling() const;
+	virtual void visit(VariableDeclaration &);
+	bool supports_interface_blocks(const std::string &) const;
+	virtual void visit(InterfaceBlock &);
+};
+
+} // namespace SL
+} // namespace GL
+} // namespace Msp
+
+#endif