[directfb-dev] [PATCH] Version 1.0.1 changes to allow systems drivers to fully handle video memory surface creation and destruction

Sat, 21 Feb 2009 00:51:04 -0800 

Here is another set of DirectFB 1.0.1 improvements.  People 
may find these useful for developing a custom non-framebuffer 
systems driver that handles management of video memory based 
visible and non-visible surfaces.  I believe the need to make 
some of these changes probably led to the introduction of the 
surface pools in version 1.2.x.

Patch "1-Added_SurfaceBufferFieldForDriverSpecificData.diff":

1.  Added a _SurfaceBuffer field to hold a driver-specific 
    data pointer.  Useful for obtaining custom surface data 
    specifically associated with the individual surface 
    buffer.

Patch "2-DriverCanAllocateNonVisibleSurfaces.diff":

2.  Systems drivers can now manage non-visible surfaces 
    allocated as video memory.  Required the addition of two 
    new core system functions that a driver must provide 
    (VideoMemoryAllocate and VideoMemoryDeallocate).  If 
    they are not needed and the DFB core software should 
    manage allocation as usual, the functions should 
    return DFB_UNIMPLEMENTED from both functions.

Patch "3-RemoveRegionCoreSurfaceParameter.diff":

3.  Added parameter to the DisplayLayerFuncs::RemoveRegion 
    function prototype for a CoreSurface pointer.  It is 
    necessary to provide the display layer's CoreSurface to 
    the systems driver so that it can fully perform region 
    removal and reverse the actions performed by the 
    SetRegion function (such as deallocating the underlying 
    resources associated with surface such as an EGLSurface).

Regards,
Timothy

--

Timothy Strelchun
CE Software Engineering
Digital Home Group
Intel Corporation

The views expressed above are my own and not those of Intel

Attachment: 1-Added_SurfaceBufferFieldForDriverSpecificData.diff
Description: 1-Added_SurfaceBufferFieldForDriverSpecificData.diff

Attachment: 2-DriverCanAllocateNonVisibleSurfaces.diff
Description: 2-DriverCanAllocateNonVisibleSurfaces.diff

Attachment: 3-RemoveRegionCoreSurfaceParameter.diff
Description: 3-RemoveRegionCoreSurfaceParameter.diff

_______________________________________________
directfb-dev mailing list
directfb-dev@directfb.org
http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev

Reply via email to