Silent_Buddha
Legend
If PS5 GPU was RDNA 2 based, why would a Sony PS5 software engineer be asking "rhetorical questions" about possible RT related issues right after Xbox announcement of having RDNA 2 based GPU? Doesn't make any sense to me. Why would he ask very specific questions about RT related methods relating to RDNA 2, if PS5 has such features? Either Sony engineers have no clue how to resolve these specific issues, or PS5 GPU isn't RDNA 2, but something else.
Also, in some of his following replies he hinted towards why he was asking such questions.
Alternatively if they know what RT in RDNA 2 entails, they could be asking those questions from a POV of how DXR might be more limited than the actual hardware implementation of RT in RDNA 2.
The tweet is about as vague as MS saying RT in XBSX is based on DXR. The current version of DXR or a future version of DXR? Just like DX changes over time, DXR is also going to change over time. If we go back to when DX and later D3D were introduced, changes to DX and D3D came fast and furious. I see no logical reason that DXR won't also see similarly rapid revisions as hardware accelerated RT is in its infancy just as consumer level hardware accelerated 3D was still in its infancy when MS attempted to provide cross hardware compatibility through D3D (versus all the vendor specific APIs suitable for games that were available at the time).
At which point D3D and hardware accelerated 3D hardware evolved mostly in step with each other with MS (and software developers through MS) influencing hardware design while hardware design influenced D3D. RT hardware acceleration and DXR will likely follow a similar trajectory.
However until that happened there were sometimes gaps in what X hardware could do and what the API allowed access to. Alternatively there were features that the API allowed access to that X hardware couldn't do. It's just as likely that Sony engineer could have been referencing something along these lines as it is that it was a purely rhetorical question or that it could be a non AMD RT solution.
Unless or until mobile embraces RT, PC hardware GPU makers will likely dictate the future of RT hardware acceleration. While being influenced by...say one console...could net you around a 100 million user install base, that also locks the hardware features to once every 5-8 years. Versus PC where you'll have user (hardware) penetration in the hundreds of millions (gamers, businesses, research institutions, etc.) with your hardware being capable of evolving at a much faster pace.
Regards,
SB
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