OpenGL 4 Buffer Class

gl4.hpp

#pragma once

#include // Your lib that includes all the OpenGL bindings and maybe some other stuff i've forgotten like vector

namespace gl4 {
	template<int BufferType, typename StorageClass> class glBuffer
	{
	public:
		GLuint buffer;

		glBuffer(){};
		~glBuffer(){ glDeleteBuffers(1, &buffer); };

		virtual void create(std::vector<StorageClass> v){
			glGenBuffers(1, &buffer);
			glBindBuffer(BufferType, buffer);
			glBufferData(BufferType, v.size()*sizeof(StorageClass), &v.front(), GL_STATIC_DRAW);
		};
	};

	template<typename StorageClass> class glObj
	{
	public:
		GLuint vao;
		glBuffer<GL_ARRAY_BUFFER, StorageClass> vbo;
		glBuffer<GL_ELEMENT_ARRAY_BUFFER, GLuint> ebo;

		int elementSize;

		glObj(){};
		glObj(std::vector<StorageClass> v, std::vector<GLuint> e) { create(v, e); };
		~glObj(){ glDeleteVertexArrays(1, &vao); };

		void create(std::vector<StorageClass> v, std::vector<GLuint> e){
			// Create Vertex Array Object
			glGenVertexArrays(1, &vao);
			glBindVertexArray(vao);

			// Create two buffers, first stores the vertex data, second stores element index for draw order
			vbo.create(v);
			ebo.create(e);

			// Retain raw element index length for drawing call
			elementSize = e.size();
		};

		void draw(int mode = GL_TRIANGLE_STRIP){
			glBindVertexArray(vao);
			glDrawElements(mode, elementSize, GL_UNSIGNED_INT, 0);
		};
	};
}