GL_EXT_multi_draw_indirect
https://www.khronos.org/registry/OpenGL/extensions/EXT/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)