On Tue, 2015-01-06 at 15:05 +0000, Rutledge Shawn wrote:
> QtQuick 2 items have no built-in support for rendering via QPainter, so it 
> normally doesn’t work without OpenGL.  One way to get back an image after the 
> rendering is done is QQuickItem::​grabToImage().  There is a commercial 
> add-on to use the raster engine for rendering though, in case you really 
> don’t have an OpenGL-capable GPU: 
> http://doc.qt.io/QtQuick2DRenderer/index.html

I not only want to get back an image after rendering, I want to prevent
Qt from drawing anything onto the screen, except for my buffer. This is
offscreen rendering, but I don't know how to use the 'offscreen' plugin
for this...

Maybe the best would be to refactor 'linuxfb' so it doesn't write
to /dev/fb*, but to my buffer. I'm just hesitating to begin this work
until someone says there's no simpler solution...

Regards,


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