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  • Ray Donnelly
    Ray Donnelly
    2011-11-09

    What is the device youre seeing this on?

    Many have 6 bit panels and some also use 6 bit framebuffers, e.g. advent vega and other tegra 2 shuttle tablets.

    The blue gradient is less banded, I think, because it covers more range and is less bright.

     
  • I have ASUS transformer tf101 based on tegra 2. But I think this cannot be the reason you mentioned.

    The circle was first an image and it was smooth. But then I implemented this image as QML item with the same size and same gradient stops. And I got the ugly result.

    So I think the problem is in gradient drawing only.

     
  • BogDan Vatra
    BogDan Vatra
    2011-11-10

    Try to use OpenGL (go to libraries tab, and check "QtOpenGL")

     
  • Yes. This do the trick. Thank you. Now I have smooth gradients.
    Does this solution has some side effects?
    Do all android devices have OpenGL support?

     
    • BogDan Vatra
      BogDan Vatra
      2011-11-13

      Yes, it has, you must target ONLY OpenGL ES 2 devices, also OpenGL is slower than raster engine if is used only for 2d drawing.

       
  • BogDan Vatra
    BogDan Vatra
    2011-11-13

    • milestone: unstable --> future release