I have moved to DirectFB 1.2.x and am testing my driver.
I have got 2 framebuffers in my system and I have written a surface pool
that uses them and have registered the functions to deal with them.
The problem I have is the following:
On PRIMARY layer (i.e FB0)
I can do the following:
/* Set the surface description - specify which fields are set and set
them. */
surfaceDesc.flags = DSDESC_CAPS;
surfaceDesc.caps = DSCAPS_PRIMARY | DSCAPS_STATIC_ALLOC | DSCAPS_DOUBLE
| DSCAPS_FLIPPING;
/* Create the frame buffer primary surface by passing our surface
description. */
DFBCHECK( pgfx_dfb->CreateSurface(pgfx_dfb, &surfaceDesc,
&pgfx_frameBuffer) );
This works and I get a context etc and I can draw properly.
However If I try to then do the following for Layer 1 (i.e FB1):
DFBCHECK( pgfx_dfb->GetDisplayLayer(pgfx_dfb, 1,
&pgfx_videoLayer[which]) );
/* Ensure we have access rights to the layer */
pgfx_videoLayer[which]->SetCooperativeLevel(pgfx_videoLayer[which],
DLSCL_ADMINISTRATIVE);
pImageLayer->GetSurface(pImageLayer, &pgfx_slideShowBuffer);
It fails, what ends up happening is in DirectFB some context stuff happens
and it calls my functions as if it were layer 0.
However if i do the same but use:
pgfx_videoLayer[which]->SetCooperativeLevel(pgfx_videoLayer[which],
DLSCL_EXCLUSIVE);
Then I get DirectFB to access the correct layers.
Now whilst this works I am concerned that I do not really understand this
issue and that If I was to start doing windowing etc on these layers that
the choice of CooperativeLevel would impact this. Yet the choice of
Cooperative level is impacting my driver.
Effectively the driver is based on the Davinci driver so i have all the same
SetRegion etc. I have just made it aware of the resource_id (defaults to
layer num) and used that to control which FB I am acting on.
Many thanks for the help
Dan
--
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