GL_EXT_multi_draw_indirect
http://www.opengl.org/registry/specs/EXT/multi_draw_indirect.txt
GL_EXT_multi_draw_indirect

	void glMultiDrawArraysIndirectEXT (GLenum mode, const void *indirect, GLsizei drawcount, GLsizei stride)
	void glMultiDrawElementsIndirectEXT (GLenum mode, GLenum type, const void *indirect, GLsizei drawcount, GLsizei stride)
