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warrenm's profile
Warren Moore
Warren Moore
Warren Moore
@warrenm

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Warren Moore

@warrenm

Software engineer specializing in mobile graphics and augmented reality. Author of “Metal by Example”

San Francisco, CA
metalbyexample.com
Joined April 2008

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    1. Jean-François Roy‏ @jfroy 1 May 2015

      @warrenm Have you worked with compute much in Metal? I’m trying to apply a kernel on a texture after rendering to it and it is dog slow.

      1 reply 0 retweets 0 likes
    2. Warren Moore‏ @warrenm 1 May 2015
      Replying to @jfroy

      @jfroy Only a bit. Can you quantify how bad the performance is?

      1 reply 0 retweets 0 likes
    3. Jean-François Roy‏ @jfroy 1 May 2015
      Replying to @warrenm

      @warrenm I’m working on a trivial data set (cube render template) + trivial kernel and it goes from 60 to like 1-5. Suspect a stall.

      1 reply 0 retweets 0 likes
    4. Warren Moore‏ @warrenm 1 May 2015
      Replying to @jfroy

      @jfroy That’s pretty severe. Happy to dig in if you can share code. Or ask on the Dev Forums.

      1 reply 0 retweets 0 likes
    5. Jean-François Roy‏ @jfroy 1 May 2015
      Replying to @warrenm

      @warrenm Is there a large cost to switch from render to compute or should you in theory be able to mix them in your pipeline?

      1 reply 0 retweets 0 likes
    6. Warren Moore‏ @warrenm 1 May 2015
      Replying to @jfroy

      @jfroy In theory it should remain high-performance when you interleave rendering and compute.

      4 replies 0 retweets 0 likes
    7. Jean-François Roy‏ @jfroy 1 May 2015
      Replying to @warrenm

      @warrenm Side note 2: You can blame me when the GPU debugger fails, I built the core infra for it (well the original GL one, not Metal).

      2 replies 0 retweets 0 likes
      Warren Moore‏ @warrenm 1 May 2015
      Replying to @jfroy

      @jfroy I owe you a beer or three.

      1:23 PM - 1 May 2015 from Civic Center, San Francisco
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Jean-François Roy‏ @jfroy 1 May 2015
          Replying to @warrenm

          @warrenm And sure :) I don’t have a WWDC ticket, but I live in SF so I’d be happy to meet. Or anytime. We can talk Metal, Vulkan, DX12 ;)

          1 reply 0 retweets 1 like
        2. Warren Moore‏ @warrenm 1 May 2015
          Replying to @jfroy

          @jfroy I missed out on WWDC this year. Would love to meet up at some point next month, once we know more about the direction of gfx on iOS.

          0 replies 0 retweets 0 likes
          3. End of conversation

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