Merge branch 'blender-v3.5-release'

scripts/modules/bpy_extras/node_shader_utils.py

@@ -671,6 +671,7 @@ class ShaderImageTextureWrapper():
             tree.links.new(node_image.outputs["Alpha" if self.use_alpha else "Color"], self.socket_dst)
             if self.use_alpha:
                 self.owner_shader.material.blend_method = 'BLEND'
+                self.owner_shader.material.show_transparent_back = False
 
             self._node_image = node_image
         return self._node_image

source/blender/io/wavefront_obj/importer/obj_import_mtl.cc

@@ -315,6 +315,7 @@ static void set_bsdf_socket_values(bNode *bsdf, Material *mat, const MTLMaterial
   }
   if (do_tranparency || (alpha >= 0.0f && alpha < 1.0f)) {
     mat->blend_method = MA_BM_BLEND;
+    mat->blend_flag |= MA_BL_HIDE_BACKFACE;
   }
 
   if (mtl_mat.sheen >= 0) {
@@ -393,6 +394,7 @@ static void add_image_textures(Main *bmain,
     else if (key == int(MTLTexMapType::Alpha)) {
       link_sockets(ntree, image_node, "Alpha", bsdf, tex_map_type_to_socket_id[key]);
       mat->blend_method = MA_BM_BLEND;
+      mat->blend_flag |= MA_BL_HIDE_BACKFACE;
     }
     else {
       link_sockets(ntree, image_node, "Color", bsdf, tex_map_type_to_socket_id[key]);