Retargetable graphics

Commodore planned to introduce retargetable graphics in future version of AmigaOS (4.0),[4] but the company was not able to deliver such solution before its demise.

Third-party graphics card manufacturers were thus forced to create their own software layers on top of AmigaOS, incompatible with each other.

Earliest of these solutions like Grafexa and SAGE libraries[5] were able to display only their own applications on the graphics card without any support for "Workbench emulation".

Examples of other drivers are EGS, Merlin/Domino,[6] Omnibus,[7] Retina[8] (which should be able even to display Workbench in 24 bit colour),[9] Graffity,[10] Picasso, and ProBench.

Of these, Picasso offered good compatibility with older applications, because most OS-compliant programs could be promoted to graphics card display,[11] and relatively strong software support.

[3] ProBench (by ProDev) was released as a new "Workbench emulator" for the old Merlin graphics card in 1994,[12] and version 3 (1996) introduced 16 bit colour depth and compatibility with CyberGraphX.

RTG Master supports both graphics cards (with CyberGraphX, Picasso II, Picasso96 or EGS compatible drivers) and the Amiga chipset (ECS or AGA).