Hi,
I have cross compiled webkit on gtk+/directfb for an arm based board we are
using. Its working well with the software renderer on frame buffer device. Our
board has an SM501 on board and I have been looking into getting hardware
acceleration going for this.
I have found a patch with an sm501 driver in it. Its a little old but I was
going to use this for a reference.
The first thing I have done though is take the tdfx driver, strip out most the
tdfx stuff so the driver actually does nothing. checkState for example will not
elect to accelerate anything. It does probe OK so it gets loaded.
The curious thing is if I put this driver in place so that it is loaded, even
though the driver does not actually do anything I get stange problems with
rendering. On pages the background shows through in places and some images are
corrupted.
If I remove the driver .so and run it again it works perfectly. If I put the
driver back in place and use the no-hardware flag the same problem appears.
I realize I have not given much information here to help diagnose the problem,
but essentially if I put a skeleton driver in place that does nothing this
appears to break webkitt running on directfb.
It would appear to me that with the driver in place, although presumably it
will use the same software fallbacks as when running without a driver - it
appears to do so in a different and seemingly buggy manor.
I can supply more information - logs etc if anyone thinks that might help, but
has anybody ever come across a similar problem ?
Considering that without a driver in place it works perfectly, but with a
driver that does not actually choose to do anything it does not work well - I'm
left thinking this is probarbly a bug somewhere in directfb. I will look into
this more when I have time but if some already has seen such behavior it would
be interesting to hear.
Thanks
Ryan
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