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TimSweeneyEpic's profile
Tim Sweeney
Tim Sweeney
Tim Sweeney
@TimSweeneyEpic

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Tim Sweeney

@TimSweeneyEpic

Epic Games founder & CEO

epicgames.com
Joined August 2013

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    1. Florian Hoenig‏ @rianflo 31 May 2018
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      • Report NetzDG Violation

      @TimSweeneyEpic - I'm still enraged by @SteamVR deciding the render target resolution with some "representative fragment shader" measurement. What your take on this?

      1 reply 0 retweets 1 like
    2. Tim Sweeney‏ @TimSweeneyEpic 31 May 2018
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      Replying to @rianflo @SteamVR

      I don’t know anything about this. Surely devs can override the defaults?

      2 replies 0 retweets 0 likes
    3. Florian Hoenig‏ @rianflo 31 May 2018
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      Replying to @TimSweeneyEpic @SteamVR

      No you cannot. There is only GetRecommendedRenderTargetSize, which gives you a resolution decided by this heuristic. It sucks up all of our carefully budgeted compute kernel headroom, by it trying to get everything fragments shader bound. 🤯

      2 replies 0 retweets 0 likes
      Tim Sweeney‏ @TimSweeneyEpic 31 May 2018
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      Replying to @rianflo @SteamVR

      Hmm, it seems like a system-determined default wouldn’t scale well across the range of apps with trivial scene and shader complexity to high scene and shader complexity, unless frame time were dominated by the cost of API-provided post-processing for lens and color correction.

      11:47 PM - 31 May 2018
      3 replies 0 retweets 0 likes
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        2. Florian Hoenig‏ @rianflo 1 Jun 2018
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          Replying to @TimSweeneyEpic @SteamVR

          I think the assumptions that led to the decision are that most games are cpu bound and fragment shader bound but build with a min spec in mind. So let’s take the spare GPU power on supersampling.

          1 reply 0 retweets 0 likes
        3. Florian Hoenig‏ @rianflo 1 Jun 2018
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          Replying to @rianflo @TimSweeneyEpic @SteamVR

          for users with higher end than min spec GPUs. I find this personally a premature abstraction. But I don’t have a traditional engine either. So curious how that works out for an U real type engine.

          1 reply 0 retweets 0 likes
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        1. Florian Hoenig‏ @rianflo 1 Jun 2018
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          Replying to @TimSweeneyEpic @SteamVR

          Regarding “if frametime were dominated by post...”. wouldn’t that be absurd?

          0 replies 0 retweets 0 likes
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