On Linux, Cycles HIP has a JIT compilation feature.
This feature is used when Cycles can not find a precompiled kernel
for your GPU. Which is most common when using hardware that wasn't
out at the time that a version of Blender was released.
There were various issues with this JIT compilation system, this commit
aims to solve them. The changes include:
- Enable `WITH_NANOVDB` when Blender is built with NanoVDB.
- This fixes a issue where VDB objects would not render.
- Enable some extra debug options for developers when desired
(This is so we match the CUDA implementation of the same feature).
- Reduce the optimizaiton level from -O3 to the default.
- This is to avoid any extra issues that may occur as a result
of an increase optimization level that isn't tested with
precompiled kernels.
- Reduce the optimization level even further to -O1 for Vega.
- This was done on precompiled kernels to work around some issues,
so I decided to apply it to JIT kernels as well.
- Note: Although Vega is not officially supported, this may help
people that unofficially use Vega.
- Added some previously missing compiler arguments and fixed errors that
were introduced when enabling these compiler arguments.
- Fixed a issue where JIT compilation would fail if Blener was
installed in a path that had a space in it.
Pull Request: https://projects.blender.org/blender/blender/pulls/131853
c42894a695