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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. Anton Marini‏ @_vade Jun 6

      To be clear, I am integrating this into an existing MTL rendering environment, fairly new to the nuances at play here :)

      1 reply 0 retweets 0 likes
      Show this thread
    2. Warren Moore‏ @warrenm Jun 6
      Replying to @_vade

      Can you share a screenshot of a GPU frame capture? And do you mean you’re using GLTFMTLRenderer (including its texture caching and shaders) or not?

      2 replies 0 retweets 0 likes
    3. Anton Marini‏ @_vade Jun 6
      Replying to @warrenm

      Hey! Yes, I am using GLTFMTLRenderer - im *assuming* I'm using its texture caching :D haha. Frame capture shows all of the correct textures available and loaded - but drawing is off? Do I need to enable any specific features within GLTFMTLRenderer / the asset default scene?

      2 replies 0 retweets 0 likes
    4. Anton Marini‏ @_vade Jun 6
      Replying to @_vade @warrenm

      By off, I mean, I see verbs, but I dont see the PBR or any other textures correctly applied. Im assuming the PBR shader requires some specific setup I'm likely not doing?

      2 replies 0 retweets 0 likes
    5. Warren Moore‏ @warrenm Jun 6
      Replying to @_vade

      Oh! Do you have a lighting environment configured and/or any GLTFKHRLights in the scene? Check out the lighting environment setup in the glTFViewer app target

      1 reply 0 retweets 0 likes
    6. Anton Marini‏ @_vade Jun 6
      Replying to @warrenm

      Ah ok! Noted. Ill check it out. Thanks!

      1 reply 0 retweets 0 likes
    7. Warren Moore‏ @warrenm Jun 6
      Replying to @_vade

      Sure thing! The irradiance cubemap generator is regrettably quite slow; I need to add caching for that as well…

      1 reply 0 retweets 0 likes
    8. Anton Marini‏ @_vade Jun 6
      Replying to @warrenm

      Just got back to this : lighting fixes it but there a culling or winding issue I can’t figure out on iOS : tried fiddling with depth testing - probably something stupid on my end.pic.twitter.com/hj1RX4JCPp

      1 reply 0 retweets 0 likes
    9. Warren Moore‏ @warrenm Jun 6
      Replying to @_vade

      Hmm. It should be creating a depth-stencil state and setting the winding for you. Lemme check.

      1 reply 0 retweets 0 likes
    10. Anton Marini‏ @_vade Jun 6
      Replying to @warrenm

      I dug in a bit and it appears you do? Regardless manually fiddling didn’t appear to do much. I’m wondering if this sample code I’m using is doing weird stuff with depth I’m noT fully understanding :/

      1 reply 0 retweets 0 likes
      Warren Moore‏ @warrenm Jun 6
      Replying to @_vade

      Yeah, same conclusion here. Happy to poke at it if you can share source.

      8:26 PM - 6 Jun 2018
      3 replies 0 retweets 0 likes
        1. Anton Marini‏ @_vade Jun 6
          Replying to @warrenm

          Def will do. Honestly it’s gonna be so embarrassingly dumb 🤣 but I can blame my lack of metal chops 😶😎

          0 replies 0 retweets 0 likes
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        1. Anton Marini‏ @_vade Jun 6
          Replying to @warrenm

          Also GLTFKit seems remarkably nice and great to learn from. Thanks again!

          1 reply 0 retweets 0 likes
        2. Warren Moore‏ @warrenm Jun 6
          Replying to @_vade

          Very glad to hear it. Happy you’re having fun 😃

          0 replies 0 retweets 0 likes
          3. End of conversation
        1. Anton Marini‏ @_vade Jun 7
          Replying to @warrenm

          Ah, was a stupid issue. The example I was inserting GLTFKit into had a negative axis so z was essentially inside out. *shrug*. Everything is working perfectly and GLTFKit is really nice.

          0 replies 0 retweets 2 likes
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