[vbox-dev] IFramebuffer resolution limits

[Rūdolfs Bundulis]

Hi,

another question on IFramebuffer and monitors, yesterday while playing
around with my headless implementation I saw that a guest Windows 7
actually offers resolutions up to 6400x1200 (I hope I remember correctly)
in the "Adjust Resolution" dialog, I assume that comes from the fact that I
always return supported as true in IFramebuffer::videoModeSupported (I
didn't actually check if resize to this mode would happen). This is also
quite interesting since then that would actually give me a way of having a
high resolution surface that I could internally split into 1920 x something
tiles. But at least from what I saw it looked like only the width was
large, not the height, I would have expected a 6400 x something (something
being in 16:9 or 4:3 proportion), can anyone advise me on are these modes
actually working and can I get a high 16:9/4:3 resolution mode?
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[Vitali Pelenjow]

Hi,

it is possible to add arbitrary custom resolutions using the
vboxcontrol.exe (from the guest additions):
vboxcontrol addcustommode <width> <height> <bpp>
This mode will then be available in the "Adjust Resolution" dialog.

Also you could try to set an arbitrary high resolution mode either from
the guest:
vboxcontrol setvideomode <width> <height> <bpp> <screen>
where screen = 0 is the primary display.
Or from the host using the VBoxManage controlvm setvideomodehint command.

Vitali

Post by RÅ«dolfs Bundulis
Hi,
another question on IFramebuffer and monitors, yesterday while playing
around with my headless implementation I saw that a guest Windows 7
actually offers resolutions up to 6400x1200 (I hope I remember
correctly) in the "Adjust Resolution" dialog, I assume that comes from
the fact that I always return supported as true in
IFramebuffer::videoModeSupported (I didn't actually check if resize to
this mode would happen). This is also quite interesting since then
that would actually give me a way of having a high resolution surface
that I could internally split into 1920 x something tiles. But at
least from what I saw it looked like only the width was large, not the
height, I would have expected a 6400 x something (something being in
16:9 or 4:3 proportion), can anyone advise me on are these modes
actually working and can I get a high 16:9/4:3 resolution mode?
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[Rūdolfs Bundulis]

Hi,

thanks, so I assume I can also do that via IDisplay::setVideoModeHint(),
I'll try that out, it would be an interesting alternative to using multiple
monitors.

Post by Vitali Pelenjow
Hi,
it is possible to add arbitrary custom resolutions using the
vboxcontrol addcustommode <width> <height> <bpp>
This mode will then be available in the "Adjust Resolution" dialog.
Also you could try to set an arbitrary high resolution mode either from
vboxcontrol setvideomode <width> <height> <bpp> <screen>
where screen = 0 is the primary display.
Or from the host using the VBoxManage controlvm setvideomodehint command.
Vitali

Post by RÅ«dolfs Bundulis
Hi,
another question on IFramebuffer and monitors, yesterday while playing
around with my headless implementation I saw that a guest Windows 7
actually offers resolutions up to 6400x1200 (I hope I remember correctly)
in the "Adjust Resolution" dialog, I assume that comes from the fact that I
always return supported as true in IFramebuffer::videoModeSupported (I
didn't actually check if resize to this mode would happen). This is also
quite interesting since then that would actually give me a way of having a
high resolution surface that I could internally split into 1920 x something
tiles. But at least from what I saw it looked like only the width was
large, not the height, I would have expected a 6400 x something (something
being in 16:9 or 4:3 proportion), can anyone advise me on are these modes
actually working and can I get a high 16:9/4:3 resolution mode?
_______________________________________________
vbox-dev mailing list
vbox-dev at virtualbox.org
https://www.virtualbox.org/mailman/listinfo/vbox-dev

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