How do you think would/should ray-traced heat work?

"Wheelerguy" (wheelerguy) 07/24/2020 at 09:31 • Filed to: Musings, Gran Turismo, gran turismo 7, Forza

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Now, we know that both the newest Gran Turismo and Forza games will take advantage of the ray-tracing AMD’s RDNA2 graphics will supposedly provide. But besides lighting, how could the feature be maximized to affect driving dynamics and weather on the ground ?

As I have a child’s understanding of programming and game-dev, all this will sound like conjecture . But I reckon each ray of sunlight can also provide a heat value to the air, tarmac and the cars themselves , thus affecting how the tyres react to the track (among other factors) . And with dynamic weather models, cloud cover can more tangibly affect temperatures in ways that a pre-programmed or procedural model can’t match by themselves. Something similar (ray-traced particles...?) can also be done to more accurately model rain effects, dust, dirt and rubber marbling.

BaconSandwich is tasty. > Wheelerguy 07/24/2020 at 10:34

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To my understanding, ray tracing wouldn’t necessarily affect the physics or anything else - just the actual rendering.  I mean, I suppose it’s possible they are doing some sort of ray casting within the physics engine, but there’s no real need to do that.  I’d think they’d get better bang for their buck with using other models for the physics.

RooseveltDad > Wheelerguy 07/24/2020 at 22:06

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Ray tracing, especially on the AMD or NVIDIA GPUs, will make more realistic images faster, including atmospheric effects. They might use it for physics, I don’t know.