[Bf-cycles] CUDA and OpenCL procedure for 2.63

Thomas Dinges blender at dingto.org
Thu Apr 5 12:04:05 CEST 2012

Hi Brecht,
for the upcoming 2.63 release I propose the following actions:

The toolkit 4.2 is still in RC phase. Although I don't have any issues 
or slowdown here (Geforce 540), I'd stick to 4.0 toolkit for now.

So I propose to build the sm_13, sm_20 and sm_21 kernels with toolkit 4.0
and the sm_30 with the toolkit 4.2 for the Kepler gpus.

I am not sure if the kernels are different for Linux or Windows, if they 
aren't I can build the Kepler kernels, upload, so release builders can 
manually copy the sm_30 kernel into addons/cycles/lib.
Otherwise I will create the sm_30 kernels for windows only and upload 
for jesterKing.

As it has been confirmed by several people in the forums, I think it's 
ok to enable _KERNEL_SHADING_ for OpenCL on AMD cards.
There are some reports about not working textures, so we could enable it 
without textures support for now.

But I think it's good to have this tested by a wider audience, rather 
than asking people to modify on their own builds.
Should be pretty save, OpenCL is marked as Experimental feature in 
Cycles anyways.

Best regards,

Thomas Dinges
Blender Developer, Artist and Musician


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