The heap on windows is single threaded causing it to lag behind linux in performance in allocation heavy multithreaded scenarios, BVH building is a prime example.
See https://developer.blender.org/D6218 for benchmark results
for testing with the allocator enabled/disabled you can set the environment variable TBB_MALLOC_DISABLE_REPLACEMENT=1 to disable the TBB allocator.
Reviewed By: @sergey
Differential Revision: https://developer.blender.org/D6218
Opus support was enabled in 2ddfd51810. This commit adds the Opus
library and configures FFmpeg to be compiled with Opus support.
NOTE: It may be required to run `cmake -U '*FFMPEG_LIBRARIES*' .` in
your Blender build directory in order to refresh the `FFMPEG_LIBRARIES`
setting and add libopus.
Newer OpenSubdiv brings fixes and improvements for non-manifold meshes,
which fixes some crashes we've experienced in the recent past when using
Gregory patches.
Additionally, thing new version of OpenSubdiv brings sparse patches,
which allows to multi-thread topology refinement step.
Most of the source tarballs are retrieved via http, but a few remain
that are still downloaded via ftp. This causes some pain with corporate
firewalls, so moving the last two URIs to http helps ease the build process.
Reviewers: sergey
Differential Revision: https://developer.blender.org/D4192
Note that this is turned off by default and must be enabled at build time with the CMake WITH_CYCLES_EMBREE flag.
Embree must be built as a static library with ray masking turned on, the `make deps` scripts have been updated accordingly.
There, Embree is off by default too and must be enabled with the WITH_EMBREE flag.
Using Embree allows for much faster rendering of deformation motion blur while reducing the memory footprint.
TODO: GPU implementation, deduplication of data, leveraging more of Embrees features (e.g. tessellation cache).
Differential Revision: https://developer.blender.org/D3682
This involved getting SSL compiled from sources first, ensuring
it is a static library placement independent code. Configuration
is based on what Debian is using. CFlags required to have own
configuration file, which i didn't find a better place that next
to the corresponding CMake file.
It is OpenSSL btw.
It is set to Python via --with-openssl= configuration argument.
This works fine in a clean chroot, but having libssl-dev installed
might make Python to prefer system wide library, This was worked
around by using libssl_pic.a name for the library and modifying
setup.py. Would be cool to ensure system wide libraries are not
a problem, but official release builder is safe against this,
since it will catch possible non-static dependencies.
There is also a new map file which shadows bunch of Python
symbols. Without this Python's shared libraries might bring
conflicting symbols to Blender namespace at runtime.
Hopefully this doesn't break other platforms.
-Moved from dynamic link to static on windows
-gained lcms/tinyxml/yamlcpp deps, since we need a little more control over the build flags than the build-in options will provide.
seems like the openexr 2.3.0 release tarball has broken cmake support, latest from git works
we'll have to revisit this once they get a new release out.
