Steam Deck

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A place to discuss and support all things Steam Deck.

Replacement for r/steamdeck_linux.

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Some more Steam Deck specific flairs:
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Follow the rules of Sopuli
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FSR 4 has been in development for 9-12 months already, and one of the biggest focuses is improving battery life for handhelds (www.tomshardware.com)

submitted 3 days ago by [email protected] to c/[email protected]

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He specifically cited bad battery life on the ROG Ally and Lenovo Go, saying that getting only one hour of battery life isn't enough. The Steam Deck (especially the OLED model) does a lot better battery wise, but improving power efficiency should really help with any games that are maxing out the Deck's power.

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[–] [email protected] 8 points 3 days ago (6 children)

Here is my view and a small timeline:

FSR 1 (Jun 2021): Post processing. Can be used with any game, any graphics card on any system. Quality is not very good, but developers do not need to support it in order being usable.
FSR 2 (Mar 2022): Analytical and Game specific. Analyzes the content of the ingame in order to produce better output than FSR 1. Can be used only with games that have integrated support for. Still system and graphics card agnostic.
FSR 3 (Sep 2023): Improved version of FSR 2. Therefore the previous point applies here too, but has a bit more features and should produce better quality. It was late on arrival and was controversial at launch.
FSR 4 (maybe 2025): AI and hardware dependent. Not much is known, but we can expect that it requires some form of AI chip on the GPU. We don't know if it will be usable with other GPUs that have such a chip or is restricted to AMD cards. As this is analytical, it requires games to support this, therefore its Game specific as well. It's expected to have superior quality over FSR 3, maybe rivaling XESS or even DSR. But it seems the focus is on low powered weaker hardware, where it would benefit the most.

[–] [email protected] 2 points 2 days ago (1 children)

One technical reason for why FSR 1 isn't very good but works in everything is that FSR1 is the only one that just takes your current frame and upscales it, all the newer ones are all temporal - like TAA - and use data from multiple previous frames.
Very simplified, they "jiggle" the camera each frame to a different position so that they can gather extra data to use, but that requires being implemented in the game engine directly.

[–] [email protected] 3 points 2 days ago

Kind of.

The big thing that actually defines FSR2 is that it has access to a bunch more data, particularly the depth buffer, motion vectors, and also, as you said, uses data from previous frames.

The camera jiggle is mostly just to avoid shimmering when the camera is stationary.

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