GL_EXT_texture_rectangle
http://developer.apple.com/opengl/extensions/ext_texture_rectangle.html
GL_EXT_texture_rectangle
GL_TEXTURE_RECTANGLE_EXT 0x84F5
GL_TEXTURE_BINDING_RECTANGLE_EXT 0x84F6
GL_PROXY_TEXTURE_RECTANGLE_EXT 0x84F7
GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT 0x84F8