add function table

Author: malytomas

CMakeLists.txt

@@ -17,9 +17,10 @@ add_subdirectory(external/glslang)
 add_subdirectory(external/glfw)
 
 file(GLOB_RECURSE MGL_SOURCES
+	MGL/spirv_cross_c.cpp
 	MGL/src/*.c
+	MGL/src/*.cpp
 	MGL/src/*.m
-	MGL/spirv_cross_c.cpp
 )
 add_library(mgl_static STATIC ${MGL_SOURCES})
 target_include_directories(mgl_static PUBLIC 

MGL/src/function_table.cpp

@@ -0,0 +1,34 @@
+#include <unordered_map>
+#include <string>
+
+#include "glcorearb.h"
+
+namespace
+{
+	std::unordered_map<std::string, void*> globalTable;
+
+	void initializeTable()
+	{
+		globalTable.clear();
+		globalTable.reserve(1500);
+#include "function_table_data.inl"
+	}
+}
+
+extern "C"
+{
+	void MGLfunctionTableInitialize(void)
+	{
+		assert(globalTable.empty());
+		initializeTable();
+	}
+
+	void *MGLfunctionTableFind(const char *name)
+	{
+		const std::string n(name);
+		auto it = globalTable.find(n);
+		if (it == globalTable.end())
+			return nullptr;
+		return it.second;
+	}
+}