Closed skalarproduktraum closed 8 years ago
After much testing, it turned out to actually be a driver bug.
Good news is, it already got fixed in 10.11.1! We should probably add a note to the README or something.
The best would be to notify the user to upgrade to a more recent version
i) we detect the version ii) if it is a problematic version, the we notify the user...
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On 25 Oct 2015, at 14:24, Ulrik Guenther notifications@github.com wrote:
After much testing, it turned out to actually be a driver bug.
Good news is, it already got fixed in 10.11.1! We should probably add a note to the README or something.
— Reply to this email directly or view it on GitHub.
There seems to be a problem with how 3D textures are sampled in 10.11's nVidia driver. This causes
read_imagef
to only return zeroes, leading to a non-rendering of the volume. Investigating further...Workaround for the moment: Run ClearVolume-based programs with
-DClearVolume.OpenCLDevice=0,1
, which selects the Iris Pro GPU on current MacBook Pros. It's usually fast enough for ClearVolume.