This is a re-creation of the Doom Fire effect for PSX using Fabien Sanglard's excellent article on how it was done: HOW DOOM FIRE WAS DONE
On using bitmaps to render to UIImage - these two references were extremely helpful:
This is a re-creation of the Doom Fire effect for PSX using Fabien Sanglard's excellent article on how it was done: HOW DOOM FIRE WAS DONE
On using bitmaps to render to UIImage - these two references were extremely helpful: