This is the first of many patches prepared from the DirectFB 1.0.1 improvements we made for the custom systems and graphics drivers for the Intel(R) Media Processor CE 3100. This SoC was previously code named Canmore. When we have transitioned to DirectFB 1.2.x, I plan to send out new patches if they are still needed/required.
Info on this patch:
1. Fix to properly handle display layers that do NOT support
the DLCAPS_SCREEN_SIZE capability flag, which means that
scaling is not supported (in other words the source
rectangle size must match the destination/screen rectangle
size). Previously, the destination rectangle size was not
kept 1:1 with the source size for such layers.
2. Improved documentation for DLCAPS_SCREEN_LOCATION,
DLCAPS_SCREEN_POSITION and DLCAPS_SCREEN_SIZE.
3. Added behavioral documentation derived from the DFB core
software to IDirectFBDisplayLayer::SetConfiguration and
corrected typo in IDirectFBDisplayLayer::SetScreenLocation.
4. Changed the automatic display layer centering algorithm to
return only even values for the 'y' coordinate. This is
needed because in interlaced display modes on some hardware
such as the Intel(R) Media Processor CE 3100, the 'y'
coordinates can only be on even lines.
5. Documented ability for IDirectFBSurface::Lock to hand back
a pointer to the front buffer when read only access is
requested. Discovered this behavior during development and
investigations in the DFB core software.
Regards,
Timothy
--
Timothy Strelchun
CE Software Engineering
Digital Home Group
Intel Corporation
The views expressed above are my own and not those of Intel
NonScalingDisplayLayerFixAndCenteringFix.diff
Description: NonScalingDisplayLayerFixAndCenteringFix.diff
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