[argyllcms] Re: nVidia GeForce & deep colour support in Linux

  • From: Milan Knížek <knizek.confy@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 09 Sep 2014 20:33:28 +0200

Kai-Uwe Behrmann píše v Út 02. 09. 2014 v 06:44 +0200:
> Am 01.09.2014 21:52, schrieb Milan Knížek:
> >> these days. The more easy way is using OpenGL.
> > Is there anything special for Krita to display in 30-bit depth other
> > than to choose "Enable OpenGL" in Preferences / Display and load a
> > 16-bit encoded image? I used Compiz as WM.
> Krita -> [top menu] Settings -> Configure Krita -> Display [left tab] ->
> [x] Enable OpenGL
> + a proper gradient test image e.g.
> http://www.oyranos.org/images/16bit-gradient.png
> from http://www.oyranos.org/wiki/index.php?title=Test_Images
> should reveal the smothness of gradients. Compare with zooming 100% in
> Krita and e.g. FF .

Thanks for the hint. No success so far.

Can you pls do some extra stuff for me so that I can compare?

Run "xwininfo" in terminal and click on the Krita window. There should
be some output like:
  Depth: 30
  Visual: 0x21
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x20 (installed)

Then run also glxinfo piped through grep to filter your actual "Visual"
ID (which is 21 in my case):
$ glxinfo -v | grep -A7 "ID: 21"
Visual ID: 21  depth=30  class=TrueColor, type=(none)
    bufferSize=30 level=0 renderType=rgba doubleBuffer=1 stereo=0
    rgba: redSize=10 greenSize=10 blueSize=10 alphaSize=0 float=N sRGB=Y
    auxBuffers=4 depthSize=24 stencilSize=0
    accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
    multiSample=0  multiSampleBuffers=0

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