Details
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Type:
Suggestion
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Status: Closed
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Priority:
P2: Important
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Resolution: Out of scope
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Affects Version/s: 5.8.0 Alpha
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Fix Version/s: None
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Component/s: QPA: LinuxFB
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Labels:None
Description
Double buffering can be implemented if the virtual resolution (xres_virtual, xyres_virtual) is at least twice as large the screen resolution (xres, yres) by drawing to the non-visible area and then issuing the FBIOPAN_DISPLAY ioctl with an adjusted xoffset/yoffset to do a buffer swap.
An environment variable can be added to optionally force issuing the FBIO_WAITFORVSYNC ioctl if FBIOPAN_DISPLAY isn't vsynced.
Attachments
Issue Links
- is related to
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QTBUG-55768 [b2qt] Toradex Colibri VF image should switch to kms driver usage
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- Closed
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QTBUG-56306 Add a DRM dumb buffer platform plugin - or make it an option for linuxfb
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- Open
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