[Development] QImage Support for Grayscale Images

Christoph Feck christoph at maxiom.de
Tue Oct 25 22:29:52 CEST 2011

On Tuesday 25 October 2011 18:18:19 Keith Gardner wrote:
> Is there a plan for adding grayscale support to QImage?  I know
> that there are enums in place in preparation for this capability. 
> I have also looked at the bug tracker and found pages of bugs
> requesting this feature.  I personally would like to see it
> implemented because I use grayscale textures in my apps and am
> also using a grayscale camera.  This one missing feature is
> forcing me to use FreeImage directly to do my load/save operations
> even though I want to use only use Qt data types.
> Thanks,
> Keith

QImage supports 8 bit grayscale images via QImage::Format_Indexed8. 
Depending on how you initialize the palette, you can have value 255 
mean black or white.

Rendering to 8 bit images is not supported, though.

Christoph Feck
KDE Quality Team

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