GL_ATI_meminfo
https://www.khronos.org/registry/OpenGL/extensions/ATI/ATI_meminfo.txt
GL_ATI_meminfo

	GL_VBO_FREE_MEMORY_ATI 0x87FB
	GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
	GL_RENDERBUFFER_FREE_MEMORY_ATI 0x87FD