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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. Janie (Clayton) Larson‏ @RedQueenCoder 31 Oct 2016
      Replying to @RedQueenCoder @cocoaphony

      I want to find something between a triangle and a 3D pug because the concepts are scalable.

      1 reply 0 retweets 0 likes
    2. Rob Napier‏ @cocoaphony 31 Oct 2016
      Replying to @RedQueenCoder

      Interesting. But don't you still have to do the work in 3D (just on a plane)? So normal 3D tools are still the answer, right?

      2 replies 0 retweets 0 likes
    3. Janie (Clayton) Larson‏ @RedQueenCoder 31 Oct 2016
      Replying to @cocoaphony

      I basically want something like Illustrator that will generate a pattern file, but a lot less complicated.

      2 replies 0 retweets 0 likes
    4. Rob Napier‏ @cocoaphony 31 Oct 2016
      Replying to @RedQueenCoder

      OK, so Inkscape is an answer to the question, but it doesn't solve the deeper problem well.

      1 reply 0 retweets 0 likes
    5. Janie (Clayton) Larson‏ @RedQueenCoder 31 Oct 2016
      Replying to @cocoaphony

      The only answer I see is to write my own application that does what I want it to! 😜

      1 reply 0 retweets 0 likes
    6. flexMonkey‏ @FlexMonkey 31 Oct 2016
      Replying to @RedQueenCoder @cocoaphony

      can I chime in with https://www.paintcodeapp.com 

      1 reply 0 retweets 0 likes
    7. Janie (Clayton) Larson‏ @RedQueenCoder 31 Oct 2016
      Replying to @FlexMonkey @cocoaphony

      Does that generate vertex data or just Core Graphics data? I was actually thinking about that.

      3 replies 0 retweets 0 likes
    8. flexMonkey‏ @FlexMonkey 31 Oct 2016
      Replying to @RedQueenCoder @cocoaphony

      to the best of my knowledge, Metal can't do much with 2D vertices to draw lines and curves. Paintcode generates..

      1 reply 0 retweets 0 likes
    9. Jessy Catterwaul‏ @jessyMeow 31 Oct 2016
      Replying to @FlexMonkey @RedQueenCoder

      I’ve used 2-component vertex position data in Metal. Here’s one fed with Swift’s UInt16…pic.twitter.com/FJj8j9iPzT

      1 reply 0 retweets 2 likes
    10. Jessy Catterwaul‏ @jessyMeow 31 Oct 2016
      Replying to @jessyMeow @FlexMonkey @RedQueenCoder

      The output [[position]] must be float4 though, right @MTLDevice @warrenm ?

      1 reply 0 retweets 1 like
      Warren Moore‏ @warrenm 31 Oct 2016
      Replying to @jessyMeow @FlexMonkey @RedQueenCoder

      Yes

      9:58 AM - 31 Oct 2016
      • 2 Likes
      • Marius Horga Jessy Catterwaul
      1 reply 0 retweets 2 likes
        1. New conversation
        1. Jessy Catterwaul‏ @jessyMeow 31 Oct 2016
          Replying to @warrenm

          Using 1 for position.w, is there any gotcha when using 0 or 1 for .z, for Metal clip space? @FlexMonkey @RedQueenCoder @MTLDevice

          1 reply 0 retweets 1 like
        2. Jessy Catterwaul‏ @jessyMeow 31 Oct 2016
          Replying to @jessyMeow @warrenm and

          Metal NDC Z range is [0, 1] The edges are clean numbers but they scare me. I’ve considered .5

          2 replies 0 retweets 1 like
        3. Warren Moore‏ @warrenm 31 Oct 2016
          Replying to @jessyMeow @RedQueenCoder

          The range is inclusive. If you’re not using a depth buffer, any value [0, 1] is fine, but I prefer 0.

          0 replies 0 retweets 2 likes
          4. End of conversation

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