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Porter Duff Composition Support — Gideros Forum
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    Porter Duff Composition Support

    adiposeadipose Member
    edited January 2013 in General questions
    Is there any way to do Porter and Duff composition in Gideros? In Android there is a library:

    http://developer.android.com/reference/android/graphics/PorterDuffColorFilter.html

    This is a very powerful library that allows some pretty cool things. Do we have anything like this in Gideros?
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    Comments

    • adiposeadipose Member
      edited January 2013
      I found setColorTransform, which can almost do what I want.

      Unfortunately, it is very weak, in that it can only multiply existing values.

      To do what I want, I would first need set all image values to 255, then use setColorTransform accordingly (on a new bitmap). Then I could draw this bitmap on top of the old one. This would emulate the SRC_ATOP function of Porter Duff filters.

      Render to texture could help, here...but just supporting PorterDuff would be much better!
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    • atilimatilim Maintainer
      Unfortunately, most of the Porter and Duff composition modes cannot be emulated with OpenGL ES 1.1. Here you only have Sprite:setColorTransform and Sprite:setBlendMode.
      http://en.wikipedia.org/wiki/Cytorus
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