From 442860880f7fc4e100275ecb52c206e4f2451964 Mon Sep 17 00:00:00 2001
From: Florian Brandes <florian.brandes@posteo.de>
Date: Tue, 30 Apr 2024 10:47:17 +0200
Subject: [PATCH] blender: add materialx

Signed-off-by: Florian Brandes <florian.brandes@posteo.de>
---
 pkgs/applications/misc/blender/default.nix | 7 ++++++-
 pkgs/by-name/ma/materialx/package.nix      | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/misc/blender/default.nix b/pkgs/applications/misc/blender/default.nix
index a2cbdb79ae283a..e54cae9e56a249 100644
--- a/pkgs/applications/misc/blender/default.nix
+++ b/pkgs/applications/misc/blender/default.nix
@@ -53,6 +53,7 @@
   libxkbcommon,
   llvmPackages,
   makeWrapper,
+  materialx,
   mesa,
   ocl-icd,
   openal,
@@ -118,7 +119,8 @@ stdenv.mkDerivation (finalAttrs: {
           : > build_files/cmake/platform/platform_apple_xcode.cmake
           substituteInPlace source/creator/CMakeLists.txt \
             --replace-fail '${"$"}{LIBDIR}/python' \
-                      '${python3}'
+                      '${python3}' \
+            --replace-fail '${"$"}{LIBDIR}/materialx/' '${materialx}/'
           substituteInPlace build_files/cmake/platform/platform_apple.cmake \
             --replace-fail '${"$"}{LIBDIR}/brotli/lib/libbrotlicommon-static.a' \
                       '${lib.getLib brotli}/lib/libbrotlicommon.dylib' \
@@ -151,6 +153,7 @@ stdenv.mkDerivation (finalAttrs: {
       "-DWITH_FFTW3=ON"
       "-DWITH_IMAGE_OPENJPEG=ON"
       "-DWITH_INSTALL_PORTABLE=OFF"
+      "-DMaterialX_DIR=${materialx}/lib/cmake/MaterialX"
       "-DWITH_MOD_OCEANSIM=ON"
       "-DWITH_OPENCOLLADA=${if colladaSupport then "ON" else "OFF"}"
       "-DWITH_OPENCOLORIO=ON"
@@ -221,6 +224,7 @@ stdenv.mkDerivation (finalAttrs: {
       libsndfile
       libtiff
       libwebp
+      materialx
       opencolorio
       openexr
       openimageio
@@ -286,6 +290,7 @@ stdenv.mkDerivation (finalAttrs: {
       ps = python3Packages;
     in
     [
+      materialx
       ps.numpy
       ps.requests
       ps.zstandard
diff --git a/pkgs/by-name/ma/materialx/package.nix b/pkgs/by-name/ma/materialx/package.nix
index 551e21abfd610e..cac615eaecbbf7 100644
--- a/pkgs/by-name/ma/materialx/package.nix
+++ b/pkgs/by-name/ma/materialx/package.nix
@@ -52,6 +52,8 @@ python3Packages.buildPythonPackage rec {
   cmakeFlags = [
     (lib.cmakeBool "MATERIALX_BUILD_OIIO" true)
     (lib.cmakeBool "MATERIALX_BUILD_PYTHON" true)
+    # don't build MSL shader back-end on x86_x64-darwin, as it requires a newer SDK with metal support
+    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (stdenv.isLinux || (stdenv.isAarch64 && stdenv.isDarwin)))
   ];
 
   pythonImportsCheck = [ "MaterialX" ];