milek7/sim branch opengl 3.3 renderer import

gl/vao.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "object.h"
+#include "bindable.h"
+#include "buffer.h"
+
+namespace gl
+{
+    class vao : object, public bindable<vao>
+    {
+		struct attrib_params {
+			// TBD: should be shared_ptr? (when buffer is destroyed by owner VAO could still potentially exist)
+			gl::buffer &buffer;
+
+			int attrib;
+			int size;
+			int type;
+			int stride;
+			int offset;
+		};
+		buffer *ebo = nullptr;
+
+		std::vector<attrib_params> params;
+
+    public:
+		vao();
+		~vao();
+
+		void setup_attrib(buffer &buffer, int attrib, int size, int type, int stride, int offset);
+		void setup_ebo(buffer &ebo);
+
+		void bind();
+		static void unbind();
+
+		static bool use_vao;
+    };
+}