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Motivation

Blender is quite possibly the most popular 3D modelling appplication available, definitely the most popular free one. Enabling it would give considerably better performance on ARM64 platforms for Windows.

Status

WIP - “lite” working with some patches. “Release” needs dependencies enabling first.

Dependencies

To run it, you need latest version of Adreno GPU driver: https://mermaid.live/edit#pako:eNptVV9v2yAQ_yoRD3tqqiZzmiYPe8g6VZG6pWqnadqyB2ywQwoGAXbtVP3u4wA7djc_wHF3HPfnd-dXlElC0RpNCo3VYXL_uC8n7ttwWhKqJ9Ppp8luu9393ilabgUu6Hb3Z_JhgjkVKcsclUppLOxaWs4c4QSaUkdwllIlm9aReS4ULTxhXz7C7lRsq0CtEMqtB6wrt7FMljXsAttDsHF0N6e20qmEM6-F26TzBvNIZJJLzWQ8HcNDQJoqJayOh5qkwZ4qQa7sQVNMDJBVwRoB1lRrrGZe_tDagywd8XR771ZzwC4dEK8pSc54jM-yPHdUZYhbX2gKkZwcHzZjydlBjgmGB6TVOKOR3-ipIc_usHuCN4jKFBjgtKZ8eqIaQurzfktLyQyNrIc7uJFyabJojDY6UgWEYlNwoq74My5DSaGMoZ5O58vPx3GWYyTv872J1c2FDWH1eflWiYdRaQfJ_77ZRD8__xgXKboSPQBvYrq8K0HaYQuk4bnAj8ACtosu8HqMdYHd3QdBdAvYHAv6DhwFrLXUKQMA2AOVGnuVCs61atzazK8T2GpGMqnpubJYivhGB2J4pcd_emJqPoQaXAsXAOqg22ITTXjYeyf_1R5iG1Roo7AdVG2A1hYLPnXoOV889tFnwoxKPH4g9ghoEqZpZpsAyYLTF7_lL10FfYdY2gR0nU1AZ_kMRDR2E6Hz84zOYdkg2q7-gdn1GHALbjj2oRnFdD21UnLT3_WRxKzxk8Djrgtq0JPeq-hNaIjza75bo43xiOkqcU5Z31VuGIxq49s6GokjJNM0qHS9Pg5y0PcgOJbM9_zRyLKvH4yDbvD-J5859zVw2PWNOBxfsTfLSqg22ApDBaypQSv9M1VAYfv08HnY4X21uoHjQdhN914ayu6TcEr8gMRKtf8rSQcE0O2CCZlBF0hQLTAj7lf0Ctp75LpS0D1aO5Jg_bxH-_LN6eHKyqe2zNDa6opeoEoRbOktw-4HJtA6x9z03C-EWak7TYXLX1KedaiXfg3_P_8b9Dpo_YoatE7mi8vZMrlK3HJzlVyvLlCL1tPVfHm5WN0sZlfLZD67WS7eLtDJW00uZ3PHml2vFjfLq1WSvP0FedRMSQ

Todo

Get “lite” building OOB, by making sure patches are pushed, and get “Release” version built.

Known Limitations

Currently building/launching is problematic, and requires manually copying DLLs at various points when the build process errors out. There are also many assumptions within blender’s codebase that “Windows == x64”, which needs to be worked out.

Compiling notes

NOTE: www.qualcomm.com/products/mobile/snapdragon/pcs-and-tablets/snapdragon-8-series-mobile-compute-platforms/snapdragon-8cx-gen-3-compute-platform#Software

Status

Nightlies available from blender via https://builder.blender.org/download/daily/

Dependencies

All are enabled except OpenPGL, and DPCPP.

A full list can be seen here: https://projects.blender.org/blender/blender/src/branch/main/build_files/build_environment/cmake/versions.cmake

Todo

Enable OpenPGL and investigate clang-cl builds.

Known Limitations

Only 8cx Gen3 and above devices work.

Compiling notes

This must be done on a WoA machine - cross-compiling is not yet supported.

Currently the following native libraries/programs are required to be present in the vc15_win64 folder (all buildable via vcpkg bar python, which uses the native installer, and a copy-paste from that directory):

• freetype (freetype.lib must be copied, with new file name freetype2ST.lib)

• zstd (zstd.lib must be copied and renamed to zstd_static.lib)

• zlib (zlib.lib must be copied and renamed to libz_st.lib)

• pthreads

• libpng (folder renamed to “png” + libpng16.lib must be copied and renamed to libpng.lib)

• libjpeg-turbo (folder renamed to “jpeg” + jpeg.lib must be copied and renamed to libjpeg.lib)

• brotli (uses arm64-windows-static target)

• libepoxy (folder renamed to “epoxy”)

• python

NOTE: We will ultimately move away from VCPKG, as the blender foundation will not accept it, and requires the dependencies be built manually using their CMake scripts. DO NOT GET TO RELY ON VCPKG FEATURES SUCH AS CMAKE TARGETS, ETC.

Compiling via build script

Compiling blender

As blender now has pre-builts available for Windows ARM64, the standard blender build instructions can be followed for a normal build of blender (note, only VS2022 works for ARM64): https://developer.blender.org/docs/handbook/building_blender/windows/

Compiling via build script (outdated)

There is a build script written, which takes care of many of the interim steps required to build and run the lite semi-release version of Blender, available here: https://gitlab.com/Linaro/windowsonarm/packages/blender/-/tree/master/

It currently pulls our internal should work on the main fork of blender, which has patches applied that are required to compile/run Blenderbut mileage may very, as main is a fast-moving target within blender.

To use:

• Ensure you have VS2022 + CMake (>=3.24, which supports ARM64 hosts) installed on an ARM64 hostSet up arm64 wenv: https://gitlab.com/Linaro/windowsonarm/wenv/

• Clone repo

• Execute build.bat from a plain cmd ./recipe.sh origin/main out_dir from a wenv bash terminal - ie, not a vcvarsall/plain CMD instance! Plain powershell is also ok

• Wait for built build to complete

Contributing changes

...

If you wish to contribute changes to our internal forkBlender, you may do so by making a merge request for your changes to blender’s main repo here: https://gitlabprojects.blender.comorg/Linaro/windowsonarmblender/forks/blender/The build script automatically clones this repo into a folder named “blender”

Any changes or issues relating to Windows ARM64 will be directed to Anthony Roberts by the blender triaging team - if you have bigger changes to discuss, please reach out to Anthony directly at anthony.roberts@linaro.org.

If you have any questions, queries, or concerns, contact Anthony Roberts

Running

Download ZIP file below, and run blender exe as normal. May require native python (tested with 3.11rc2) being installed and on the path.

...

a daily build from the blender build bots from here: https://builder.blender.org/download/daily/