s, with zero being reserved as the default image. The default image is generated by ilCreateDefaultTex. The only reason the default image would be NULL is if OpenIL could not create the default image, due to memory constraints of the system, so always heed the IL_OUT_OF_MEMORY error. Any dimension image may be bound with ilBindImage. When ilBindImage is called, the bound image remains bound until ilBindImage is called again with a different value in Image.
Il Class | Tao.DevIl Namespace