No, I'm not "disproven". You can adjust the lighting as you can adjust the PhysX settings. PhysX has two modes; Software and Hardware-Accelerated. If you turn PhysX off in-game or via the control panel it reverts to software mode, i.e. it is processed on the CPU. If you leave it on, it's processed on your GPU or dedicated card (i.e. it's accelerated by the hardware). PhysX is vital to the game as it's about the physics programming (It's not about graphics as you say, it's nothing to do with that beyond being able to be processed on nVidia GPUs and appearing as better visual physics (Such as explosions)), and without that then the game just wouldn't work.
The control panel is a global setting, but you can disable it in the menus for certain games, with Sacred 2 being an example. If you change the control panel to "CPU" then it would always process on the CPU. If you put it on "auto-select" then it would use your in-game settings; Off would be CPU, On would be GPU.
Assumption time: It also depends what the developer has done with it. I assume there's two versions a developer can use, i.e. one version would just be software for all, and the other would be a toggle between software and hardware.
Last edited by Dwagginz; 30/11/10 10:01 AM.
