Vignette Shader

Comments

• Ninjadoodle Member

  February 2016

  Hi guys
  
  Just wanted to bump this topic, in case anyone can help.
  
  Thanks again!

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• hgy29 Maintainer

  February 2016

  Yes you could definitely use a shader for such effect, let me have a try

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• hgy29 Maintainer

  February 2016

  Something along those lines maybe ?

  zip

  zip

  Vignette.zip

  2K

  Vignette.zip 1.7K

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• Ninjadoodle Member

  February 2016

  Hi @hgy29
  
  Thank you very much for doing this, you rock! I can't however seem to run the project.
  
  I get an error ...
  
  main.lua:2: attempt to index global 'Shader' (a nil value)
  stack traceback:
  main.lua:2: in main chunk

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• Ninjadoodle Member

  February 2016 edited February 2016

  Hi @hgy29
  
  Thank you very much for the example, I got it working I'm however completely lost trying to understand how it's done.
  
  I tried looking through the Gideros shader examples, but there are only a few and the shaders themselves are not really explained.
  
  I don't think there is any info on them in the manual either.

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• hgy29 Maintainer

  February 2016

  Writing shaders is a complex topic, I suppose far beyond the scope of Gideros manual, but you can get a lot of examples and tutorials from the internet. Look for GLSL (for opengl) and/or HLSL (for DirectX platforms, basically Windows 8/Windows Phone for gideros).
  
  You should also take a look at this little doc I wrote for gideros: http://hieroglyphe.net/gideros/Writing shaders for Gideros Mobile.pdf
  
  And yes I could have added some explanations within the fragment shader code

  Likes: antix

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• Ninjadoodle Member

  February 2016

  Hi @hgy29
  
  Thank you for the links! Again, I appreciate all your help

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