Follow up from #559.
The same way that #1553 provided a test application for #1309 (image depth settings), we should provide test applications for sub-pixel rendering.
screenshot of the new fontrendering test application
test app running on win32
r16604 adds a test application (very slow to run..), which looks like this on Linux (with or without xpra):
The right hand side shows the difference between the antialias setting shown on the left and the "NONE" setting.
So far it shows that I am unable to force sub-pixel rendering to turn on, only gray (which is the default is seems).
Interestingly, it does enable sub-pixel rendering on MS Windows where the colours are clearly visible on the deltas:
Looks like it uses more blue on the right hand side, and orange (red) on the left. So this would imply an RGB
sub-pixel order which is correct. (this inverted since we XOR the two images!)
And this is confirmed by the value retrieved through the API, see Native_GUI.exe
output.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1580