Update to Boost 1.67.0 and OpenImageIO 1.8.11

[acasta69]

Hello David,

I am creating pull requests for this deps update, however there is one problem I don't know how to solve, related probably with the new OIIO version. When SaveOutputs is used and then rendering is stopped, Luxcore hangs instead of exiting. It does not happen with with HDR formats, only with PNG, JPG, etc.

To reproduce with luxcoreui:

• luxcoreui scenes\cornell\cornell.cfg
• Film --> SaveOutputs
• Esc
• After printing "Done", it hangs without making the command prompt available again, and must then be killed manually.

The same seems to happen with the pyluxcore_demo.py script available here: https://gist.github.com/Theverat/0707eb2bd4e99b66bc5777db2793ab67

[Dade916]

It sounds like the new OpenImageIO leaves some thread hanging, I'm going to check.

[Dade916]

It doesn't happen on Linux however I found this possible explanation: https://github.com/OpenImageIO/oiio/issues/1795

I applied a workaround, can you check if it works fine now ?

[acasta69]

That was the cause. Actually it was failing only on Windows 7 (I have then checked on Win10 and it's ok). Your workaround is working fine on both systems.