Add option to export Material as Spatial Material

io_scene_godot/__init__.py

@@ -98,11 +98,6 @@ class ExportGodot(bpy.types.Operator, ExportHelper):
  "own AnimationPlayer holding its actions",
  default=True,
  )
- use_export_material: BoolProperty(
- name="Export Material",
- description="Export all the material associated with mesh surfaces",
- default=True,
- )
  use_export_shape_key: BoolProperty(
  name="Export Shape Key",
  description="Export all the shape keys in mesh objects",
@@ -151,6 +146,28 @@ class ExportGodot(bpy.types.Operator, ExportHelper):
  )
  )
  )
+ material_mode: EnumProperty(
+ name="Material Mode",
+ description="Configuration of how mesh surface Material being "
+ "exported.",
+ default="SCRIPT_SHADER",
+ items=(
+ (
+ "NONE", "None",
+ "Do not export any materials"
+ ),
+ (
+ "SPATIAL", "Spatial Material",
+ "Export all eligible materials as Spatial Material"
+ ),
+ (
+ "SCRIPT_SHADER", "Script Shader Material",
+ "Export all eligible materials as Shader Material "
+ "with Script Shader"
+ )
+ )
+
+ )
  material_search_paths: EnumProperty(
  name="Material Search Paths",
  description="Search for existing Godot materials with names that "

io_scene_godot/converters/material/material.py

@@ -55,6 +55,13 @@ def export_material(escn_file, export_settings, bl_object, material):
  return "SubResource({})".format(resource_id)
 
 
+def export_as_spatial_material(material_rsc_name, material):
+ """Export a Blender Material as Godot Spatial Material"""
+ mat = InternalResource("SpatialMaterial", material_rsc_name)
+ mat['albedo_color'] = gamma_correct(material.diffuse_color)
+ return mat
+
+
 def generate_material_resource(escn_file, export_settings, bl_object,
  material):
  """Export blender material as an internal resource"""
@@ -68,22 +75,25 @@ def generate_material_resource(escn_file, export_settings, bl_object,
  # to convert material to external file
  material_rsc_name = ''
 
- if (engine in ('CYCLES', 'BLENDER_EEVEE') and
+ if (export_settings['material_mode'] == 'SCRIPT_SHADER' and
+ engine in ('CYCLES', 'BLENDER_EEVEE') and
  material.node_tree is not None):
  mat = InternalResource("ShaderMaterial", material_rsc_name)
  try:
  export_script_shader(
  escn_file, export_settings, bl_object, material, mat
  )
  except ValidationError as exception:
- mat = None # revert to SpatialMaterial
+ # fallback to SpatialMaterial
+ mat = export_as_spatial_material(material_rsc_name, material)
  logging.error(
  "%s, in material '%s'", str(exception), material.name
  )
 
- if mat is None:
- mat = InternalResource("SpatialMaterial", material_rsc_name)
- mat['albedo_color'] = gamma_correct(material.diffuse_color)
+ elif export_settings['material_mode'] == 'SPATIAL':
+ mat = export_as_spatial_material(material_rsc_name, material)
+
+ assert mat is not None
 
  # make material-object tuple as an identifier, as uniforms is part of
  # material and they are binded with object

io_scene_godot/converters/mesh.py

@@ -98,7 +98,7 @@ def export_object_link_material(escn_file, export_settings, mesh_object,
  if slot.link == 'OBJECT' and slot.material is not None:
  surface_id = mesh_resource.get_surface_id(index)
  if (surface_id is not None and
- export_settings['use_export_material']):
+ export_settings['material_mode'] != 'NONE'):
  gd_node['material/{}'.format(surface_id)] = export_material(
  escn_file,
  export_settings,
@@ -280,7 +280,7 @@ def generate_surfaces(self, escn_file, export_settings, mesh):
  if mesh.materials:
  mat = mesh.materials[face.material_index]
  if (mat is not None and
- export_settings['use_export_material']):
+ export_settings['material_mode'] != 'NONE'):
  surface.material = export_material(
  escn_file,
  export_settings,