GL_ARB_vertex_attrib_binding
http://www.opengl.org/registry/specs/ARB/vertex_attrib_binding.txt
GL_ARB_vertex_attrib_binding
	GL_VERTEX_ATTRIB_BINDING 0x82D4
	GL_VERTEX_ATTRIB_RELATIVE_OFFSET 0x82D5
	GL_VERTEX_BINDING_DIVISOR 0x82D6
	GL_VERTEX_BINDING_OFFSET 0x82D7
	GL_VERTEX_BINDING_STRIDE 0x82D8
	GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET 0x82D9
	GL_MAX_VERTEX_ATTRIB_BINDINGS 0x82DA
	GL_VERTEX_BINDING_BUFFER 0x8F4F
	void glBindVertexBuffer (GLuint bindingindex, GLuint buffer, GLintptr offset, GLsizei stride)
	void glVertexArrayBindVertexBufferEXT (GLuint vaobj, GLuint bindingindex, GLuint buffer, GLintptr offset, GLsizei stride)
	void glVertexArrayVertexAttribBindingEXT (GLuint vaobj, GLuint attribindex, GLuint bindingindex)
	void glVertexArrayVertexAttribFormatEXT (GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset)
	void glVertexArrayVertexAttribIFormatEXT (GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset)
	void glVertexArrayVertexAttribLFormatEXT (GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset)
	void glVertexArrayVertexBindingDivisorEXT (GLuint vaobj, GLuint bindingindex, GLuint divisor)
	void glVertexAttribBinding (GLuint attribindex, GLuint bindingindex)
	void glVertexAttribFormat (GLuint attribindex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset)
	void glVertexAttribIFormat (GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset)
	void glVertexAttribLFormat (GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset)
	void glVertexBindingDivisor (GLuint bindingindex, GLuint divisor)
