AMD’s European Senior Manager of Developer Relations Richard Huddy yesterday continued the Pyrrhic GPU physics war when he accused NVIDIA of bribing game developers to support the company’s PhysX technology.

“What I have seen with physics, or PhysX rather, is that Nvidia create a marketing deal with a title, and then as part of that marketing deal, they have the right to go in and implement PhysX in the game,” Huddy said in an interview with Thinq.co.uk. “The problem with that is obviously that the game developer doesn’t actually want it. They are not doing it because they want it; they’re doing it because they are paid to do it.”

The latest round of accusations comes nearly two months after AMD accused NVIDIA of deliberately stripping multi-core CPU optimizations out of PhysX to artificially inflate the impact of a PhysX-enabled GPU.

“I am not aware of any GPU-accelerated PhysX code which is there because the games developer wanted it with the exception of the Unreal stuff. I don’t know of any games company that’s actually said ‘you know what, I really want GPU-accelerated PhysX, I’d like to tie myself to Nvidia and that sounds like a great plan’,” Huddy continued.

The comments also coincide with a significant update to AMD’s nascent Open Physics Initiative, which the firm has been developing in association with Pixelux Entertainment.

The fresh update has brought Pixelux’s Digital Molecular Matter 2 material physics simulator to the initiative. It joins AMD’s Bullet Physics middleware, which is working to optimize rigid body physics.

“Establishing an open and affordable physics development environment is an important accomplishment for both game developers and gamers, signaling a move away from exclusionary or proprietary approaches,” said Eric Demers, CTO of AMD’s graphics division.

AMD also announced that it has begun offering PC game developers free licenses for the DMM2 software to empower game developers with the ability to implement free and open source physics engines into their PC games.

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