The mod also allows the tweaking of the resolution/ray-per-pixel count of the reflections. The self-reflections can improve the realism of car materials dramatically. The ray tracing mod enables very competent ray-traced self-reflections on the player car.
This is a bit of a shame for a potential in-game or photo mode application, but would have no impact for FH5's intended use in Forza Vista or the garage. The player model itself is never reflected. The final limitation is that when say that only the player car's detail is reflected, we mean it. Secondly, hardware RT does not work within the vehicles - so the rear-view mirror does not reflect the interior of the car, for example. This means that the impact of self-reflections varies according to the design of the vehicle. For starters, in-game, primarily you are seeing your car just from the back.
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In my original PC tech review, I wasn't hugely impressed by PC scalability beyond the Series X quality mode, but engaging RT offers a cool upgrade - but it also has its limitations, of course.
And why not? The cars are the stars of the show and hardware-accelerated ray tracing makes these beautiful models look even better. It's also worth mentioning that the pre-rendered cinematics on the introduction also use the effect.
In fact, the thumbnail image on the video (and the article thumbnail on the front-page) are based on a Playground press image, which does have ray tracing enabled: you can see the vehicle reflected in the mounted lights at the front of the car. In many scenarios, the changes can be subtle - especially in-game - but close-up to the car, the difference can be extraordinary, so using the mod in photo-mode can be highly beneficial in getting a much better shot. The specific way that the reflections work also means that 'reflections within reflections' are possible - so wing mirrors reflected in the door glass 'work', though in this case, it's the cube-map from the mirror that is being reflected. Anything outside of the player vehicle that makes its way into FH5's reflections all comes from that real-time cube-map image. It's important to stress that it is only the car - not the environment - being traced and certainly not other cars. Hardware accelerated ray tracing further embellishes effect by adding RT reflections of the vehicle onto the car itself, something the cube-maps can't do. These reflections are not perspective-correct, but it's close enough and works well enough. Effectively, you're looking at cube-map reflections generated continuously in real-time. If you can imagine six invisible cameras attached to the player vehicle, capturing imagery and mapping it onto a sphere, you get some idea of how the reflections are generated. To begin with, let's clarify how standard reflections work in Forza Horizon 5, because it's fair to say that even without RT, they look great. So, how beneficial is it and what is the performance cost? Could it be enabled in future on Xbox Series X?
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However, on the DF Supporter Program, one of our backers - Frosticles - produced an RT mod for the PC version (with an assist from Rotab for the Windows Store version), allowing for reflections to run in all modes of the game. This is something of a shame, especially when photo mode in particular stands to benefit immensely. Forza Horizon 5 ships on PC, Xbox Series X and Series S with hardware-accelerated ray tracing support to embellish vehicle reflections - but only in Forza Vista and garage modes.
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