I am having some errors with Fusion and DirectFB.
I am using the multi application core.
I have it installed and running.
Sometimes however things go wrong and I some of them i understand and some I
do not.
Currently I have the following problem.
I am trying to change the screen rectangle/source rectangle from with my DFB
Graphics driver. I do the following:
/*Get the currently active context*/
result = dfb_layer_get_active_context(pDFBCoreLayer, &pContext);
if (result != 0)
{
DBG_ASSERT2(result == 0, ("dfb_layer_get_active_context failed result =>
%d\n", result));
}
result = dfb_layer_context_set_sourcerectangle(pContext, &dest_rect);
if (result != 0)
{
DBG_ASSERT2(result == 0, ("dfb_layer_context_set_sourcerectangle failed
result => %d\n", result));
}
/*Update the dest rectangle now*/
result = dfb_layer_context_set_screenrectangle(pContext, &dest_rect);
if (result != 0)
{
DBG_ASSERT2(result == 0, ("dfb_layer_context_set_screenrectangle failed
result => %d\n", result));
}
/* Decrease the context counter done becuase of
dfb_primary_layer_pixelformat*/
dfb_layer_context_unref( pContext );
The problem is that sometimes the dfb_layer_get_active_context fails with a
Fusion/Skirmish error. This is because it is getting a -EINVAL ack from
fusion.
I have tried to understand how the lock and lock->id system works but have
failed.
What reasons could there be for get_active_context failing?
Surely there should always be an active context?
Is there a better way for my DFB graphics driver to change Display Layer
properties (like size and destination rectangle)?
Hope you can help
Dan
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