Mesa's Rusticl Driver Adds Optional OpenCL FP64 Support

[phoronix]

Phoronix: Mesa's Rusticl Driver Adds Optional OpenCL FP64 Support

The newest feature added by Red Hat engineer Karol Herbst to the Rusticl Mesa OpenCL open-source driver is FP64 support...

https://www.phoronix.com/news/Rusticl-OpenCL-FP64-Doubles

[Anux]

Will it fall back to software emulation if no hardware fp64 is available?

[Quackdoc]

Will it fall back to software emulation if no hardware fp64 is available?

I believe that mesa has emulation for fp64, that may be a separate toggle, I can test later since I have a DG2

[smitty3268]

Will it fall back to software emulation if no hardware fp64 is available?

It's based upon whatever the underlying hardware driver advertises.

I believe both r600 and intel drivers supporting GL4+ will automatically fallback. Older drivers like r300 or various ARM devices that don't have the code setup to support it won't.

[Anux]

THX, now I understand a little more of the inner workings.