Support embedded textures with Blender 4.1

Blender 4.1 re-introduces the GLTF_EMBEDDED format, which is what
blend2bam uses for embedded textures.

Support for embedded textures on Blender 4.0 is unlikely to be
implemented.

blend2bam/blender_scripts/exportgltf.py

@@ -178,7 +178,8 @@ def export_gltf(settings, src, dst):
  from io_scene_gltf2.io.com.gltf2_io_debug import set_output_level #pylint: disable=import-error
  set_output_level('WARNING')
 
- exporter_options = bpy.ops.export_scene.gltf.get_rna_type().properties.keys()
+ exporter_properties = bpy.ops.export_scene.gltf.get_rna_type().properties
+ exporter_options = exporter_properties.keys()
 
  dstdir = os.path.dirname(dst)
  os.makedirs(dstdir, exist_ok=True)
@@ -191,10 +192,10 @@ def export_gltf(settings, src, dst):
 
  export_format = 'GLTF_SEPARATE'
  if settings['textures'] == 'embed':
- if bpy.app.version >= (4, 0, 0):
- print('warning: embedding textures is not currently supported by blend2bam with Blender 4.0+')
- else:
+ if 'GLTF_EMBEDDED' in exporter_properties['export_format'].enum_items:
  export_format = 'GLTF_EMBEDDED'
+ else:
+ print('warning: embedding textures is not supported by this version of Blender')
 
 
  exp_opts = {
@@ -258,6 +259,9 @@ def convert_files(convertfn, outputext):
  print('Exporting:', blendfiles)
  print('Export to:', dstdir)
 
+ addon_prefs = bpy.context.preferences.addons['io_scene_gltf2'].preferences
+ if 'allow_embedded_format' in addon_prefs:
+ addon_prefs['allow_embedded_format'] = True
 
  try:
  for blendfile in blendfiles: