Windows 7 support for Blender 3.x and newer
Description
This repository contains a compatibility DLL for running Blender 3.x on Windows 7 and a patch to modify the Blender source to use it. It does this by prepending bcompat7 to the list of libraries so it uses the entry points in it instead of those in the system libraries.
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Binaries
Stable releases, compiled from the same commit as the official releases, are available on the Releases page.
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More recent builds, including pre-release versions, are provided by Loriem: https://www.dropbox.com/sh/eufffe60fvtr9mz/AAA0YtogOoJTKggWtgAXRyXJa?dl=0
Changes compared to the official release
- Reverted https://developer.blender.org/T97828 due to rendering issues on AMD Polaris GPUs (issues #18, #19)
Building Blender for Windows 7
Build Blender following these instructions: https://wiki.blender.org/wiki/Building_Blender/Windows with a small change. Before running make update, copy bcompat7.patch into the blender source tree and run git apply bcompat7.patch (there will be some warnings about whitespace, they can be ignored) then continue with the guide.
To use the your own build of this compatibility DLL, overwrite the files in the lib/win64_vc15/bcompat7 directory created after running make update.
3.5 and newer
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Starting with version 3.5 some static libraries were switched to shared as described in Library changes for Blender 3.5.
When OpenEXR is built targetting Windows 8 or newer it will use CreateFile2, which is not present on Windows 7, instead of CreateFile. Because of this, OpenEXR.dll from Blender’s library repository will not work.
To workaround this issue, before building Blender (after make update) you must build OpenEXR. To do this clone the OpenEXR repository (to avoid problems clone the version that is present in the repository), git apply the openexr_w7.patch from this repository in OpenEXR source and run build.cmd <path to Blender library directory>. The OpenEXR files will be copied to openexrbin, overwriting the files present.
api-ms-win-core-path-l1-1-0.dll
In addition to this DLL, api-ms-win-core-path-l1-1-0.dll is required to run Blender because of Python. A version of this library for Windows 7 can be found here: https://github.com/nalexandru/api-ms-win-core-path-HACK
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