def __gather_orm_texture(blender_material, export_settings):
# Check for the presence of Occlusion, Roughness, Metallic sharing a single image.
# If not fully shared, return None, so the images will be cached and processed separately.
occlusion = gltf2_blender_get.get_socket(blender_material, "Occlusion")
if occlusion is None or not __has_image_node_from_socket(occlusion):
occlusion = gltf2_blender_get.get_socket_old(blender_material,
"Occlusion")
if occlusion is None or not __has_image_node_from_socket(occlusion):
return None
metallic_socket = gltf2_blender_get.get_socket(blender_material,
"Metallic")
roughness_socket = gltf2_blender_get.get_socket(blender_material,
"Roughness")
hasMetal = metallic_socket is not None and __has_image_node_from_socket(
metallic_socket)
hasRough = roughness_socket is not None and __has_image_node_from_socket(
roughness_socket)
if not hasMetal and not hasRough:
metallic_roughness = gltf2_blender_get.get_socket_old(
blender_material, "MetallicRoughness")
if metallic_roughness is None or not __has_image_node_from_socket(
metallic_roughness):
return None
result = (occlusion, metallic_roughness)
elif not hasMetal:
result = (occlusion, roughness_socket)
elif not hasRough:
result = (occlusion, metallic_socket)
else:
result = (occlusion, roughness_socket, metallic_socket)
if not gltf2_blender_gather_texture_info.check_same_size_images(result):
print_console(
"INFO",
"Occlusion and metal-roughness texture will be exported separately "
"(use same-sized images if you want them combined)")
return None
# Double-check this will past the filter in texture_info
info = gltf2_blender_gather_texture_info.gather_texture_info(
result[0], result, export_settings)
if info is None:
return None
return result
def __gather_occlusion_texture(blender_material, orm_texture, export_settings):
occlusion = gltf2_blender_get.get_socket(blender_material, "Occlusion")
if occlusion is None:
occlusion = gltf2_blender_get.get_socket_old(blender_material,
"Occlusion")
return gltf2_blender_gather_texture_info.gather_material_occlusion_texture_info_class(
occlusion, orm_texture or (occlusion, ), export_settings)
def __gather_base_color_factor(blender_material, export_settings):
rgb, alpha = None, None
alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
if isinstance(alpha_socket, bpy.types.NodeSocket):
alpha = gltf2_blender_get.get_factor_from_socket(alpha_socket,
kind='VALUE')
base_color_socket = gltf2_blender_get.get_socket(blender_material,
"Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(
blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_old(
blender_material, "BaseColorFactor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(
blender_material, "Background")
if isinstance(base_color_socket, bpy.types.NodeSocket):
rgb = gltf2_blender_get.get_factor_from_socket(base_color_socket,
kind='RGB')
if rgb is None: rgb = [1.0, 1.0, 1.0]
if alpha is None: alpha = 1.0
rgba = [*rgb, alpha]
if rgba == [1, 1, 1, 1]: return None
return rgba
def __gather_roughness_factor(blender_material, export_settings):
roughness_socket = gltf2_blender_get.get_socket(blender_material, "Roughness")
if roughness_socket is None:
roughness_socket = gltf2_blender_get.get_socket_old(blender_material, "RoughnessFactor")
if isinstance(roughness_socket, bpy.types.NodeSocket) and not roughness_socket.is_linked:
return roughness_socket.default_value
return None
def __gather_emissive_texture(blender_material, export_settings):
emissive = gltf2_blender_get.get_socket(blender_material, "Emissive")
if emissive is None:
emissive = gltf2_blender_get.get_socket_old(blender_material,
"Emissive")
return gltf2_blender_gather_texture_info.gather_texture_info(
emissive, (emissive, ), export_settings)
def __gather_metallic_roughness_texture(blender_material, orm_texture,
export_settings):
if orm_texture is not None:
texture_input = orm_texture
else:
metallic_socket = gltf2_blender_get.get_socket(blender_material,
"Metallic")
roughness_socket = gltf2_blender_get.get_socket(
blender_material, "Roughness")
hasMetal = metallic_socket is not None and __has_image_node_from_socket(
metallic_socket)
hasRough = roughness_socket is not None and __has_image_node_from_socket(
roughness_socket)
if not hasMetal and not hasRough:
metallic_roughness = gltf2_blender_get.get_socket_old(
blender_material, "MetallicRoughness")
if metallic_roughness is None or not __has_image_node_from_socket(
metallic_roughness):
return None
texture_input = (metallic_roughness, )
elif not hasMetal:
texture_input = (roughness_socket, )
elif not hasRough:
texture_input = (metallic_socket, )
else:
texture_input = (metallic_socket, roughness_socket)
return gltf2_blender_gather_texture_info.gather_texture_info(
texture_input, export_settings)
def __gather_base_color_factor(blender_material, export_settings):
if not blender_material.use_nodes:
return [*blender_material.diffuse_color[:3], 1.0]
rgb, alpha = None, None
alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
if isinstance(alpha_socket, bpy.types.NodeSocket):
if export_settings['gltf_image_format'] != "NONE":
alpha = gltf2_blender_get.get_factor_from_socket(alpha_socket, kind='VALUE')
else:
alpha = gltf2_blender_get.get_const_from_default_value_socket(alpha_socket, kind='VALUE')
base_color_socket = gltf2_blender_get.get_socket(blender_material, "Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_old(blender_material, "BaseColorFactor")
if isinstance(base_color_socket, bpy.types.NodeSocket):
if export_settings['gltf_image_format'] != "NONE":
rgb = gltf2_blender_get.get_factor_from_socket(base_color_socket, kind='RGB')
else:
rgb = gltf2_blender_get.get_const_from_default_value_socket(base_color_socket, kind='RGB')
if rgb is None: rgb = [1.0, 1.0, 1.0]
if alpha is None: alpha = 1.0
rgba = [*rgb, alpha]
if rgba == [1, 1, 1, 1]: return None
return rgba
def __gather_metallic_factor(blender_material, export_settings):
metallic_socket = gltf2_blender_get.get_socket(blender_material, "Metallic")
if metallic_socket is None:
metallic_socket = gltf2_blender_get.get_socket_old(blender_material, "MetallicFactor")
if isinstance(metallic_socket, bpy.types.NodeSocket) and not metallic_socket.is_linked:
return metallic_socket.default_value
return None
def __gather_normal_texture(blender_material, export_settings):
normal = gltf2_blender_get.get_socket(blender_material, "Normal")
if normal is None:
normal = gltf2_blender_get.get_socket_old(blender_material, "Normal")
return gltf2_blender_gather_texture_info.gather_material_normal_texture_info_class(
(normal,),
export_settings)
def __gather_normal_texture(blender_material, export_settings):
normal = gltf2_blender_get.get_socket(blender_material, "Normal")
if normal is None:
normal = gltf2_blender_get.get_socket_old(blender_material, "Normal")
normal_texture, use_active_uvmap_normal = gltf2_blender_gather_texture_info.gather_material_normal_texture_info_class(
normal, (normal, ), export_settings)
return normal_texture, ["normalTexture"
] if use_active_uvmap_normal else None
def __gather_emissive_texture(blender_material, export_settings):
emissive = gltf2_blender_get.get_socket(blender_material, "Emissive")
if emissive is None:
emissive = gltf2_blender_get.get_socket_old(blender_material,
"Emissive")
emissive_texture, use_actives_uvmap_emissive = gltf2_blender_gather_texture_info.gather_texture_info(
emissive, (emissive, ), export_settings)
return emissive_texture, ["emissiveTexture"
] if use_actives_uvmap_emissive else None
def __gather_occlusion_texture(blender_material, orm_texture, export_settings):
occlusion = gltf2_blender_get.get_socket(blender_material, "Occlusion")
if occlusion is None:
occlusion = gltf2_blender_get.get_socket_old(blender_material,
"Occlusion")
occlusion_texture, use_active_uvmap_occlusion = gltf2_blender_gather_texture_info.gather_material_occlusion_texture_info_class(
occlusion, orm_texture or (occlusion, ), export_settings)
return occlusion_texture, ["occlusionTexture"
] if use_active_uvmap_occlusion else None
def __gather_double_sided(blender_material, mesh_double_sided, export_settings):
if mesh_double_sided:
return True
old_double_sided_socket = gltf2_blender_get.get_socket_old(blender_material, "DoubleSided")
if old_double_sided_socket is not None and\
not old_double_sided_socket.is_linked and\
old_double_sided_socket.default_value > 0.5:
return True
return None
def __gather_roughness_factor(blender_material, export_settings):
if not blender_material.use_nodes:
return blender_material.roughness
roughness_socket = gltf2_blender_get.get_socket(blender_material, "Roughness")
if roughness_socket is None:
roughness_socket = gltf2_blender_get.get_socket_old(blender_material, "RoughnessFactor")
if isinstance(roughness_socket, bpy.types.NodeSocket):
fac = gltf2_blender_get.get_factor_from_socket(roughness_socket, kind='VALUE')
return fac if fac != 1 else None
return None
def __gather_metallic_factor(blender_material, export_settings):
if not blender_material.use_nodes:
return blender_material.metallic
metallic_socket = gltf2_blender_get.get_socket(blender_material, "Metallic")
if metallic_socket is None:
metallic_socket = gltf2_blender_get.get_socket_old(blender_material, "MetallicFactor")
if isinstance(metallic_socket, bpy.types.NodeSocket):
fac = gltf2_blender_get.get_factor_from_socket(metallic_socket, kind='VALUE')
return fac if fac != 1 else None
return None
def __gather_emissive_factor(blender_material, export_settings):
emissive_socket = gltf2_blender_get.get_socket(blender_material, "Emissive")
if emissive_socket is None:
emissive_socket = gltf2_blender_get.get_socket_old(blender_material, "EmissiveFactor")
if isinstance(emissive_socket, bpy.types.NodeSocket):
if emissive_socket.is_linked:
# In glTF, the default emissiveFactor is all zeros, so if an emission texture is connected,
# we have to manually set it to all ones.
return [1.0, 1.0, 1.0]
else:
return list(emissive_socket.default_value)[0:3]
return None
def __gather_base_color_factor(blender_material, export_settings):
alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
alpha = alpha_socket.default_value if alpha_socket is not None and not alpha_socket.is_linked else 1.0
base_color_socket = gltf2_blender_get.get_socket(blender_material,
"Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(
blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_old(
blender_material, "BaseColorFactor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(
blender_material, "Background")
if not isinstance(base_color_socket, bpy.types.NodeSocket):
return None
if not base_color_socket.is_linked:
return list(base_color_socket.default_value)[:3] + [alpha]
texture_node = __get_tex_from_socket(base_color_socket)
if texture_node is None:
return None
def is_valid_multiply_node(node):
return isinstance(node, bpy.types.ShaderNodeMixRGB) and \
node.blend_type == "MULTIPLY" and \
len(node.inputs) == 3
multiply_node = next((link.from_node for link in texture_node.path
if is_valid_multiply_node(link.from_node)), None)
if multiply_node is None:
return None
def is_factor_socket(socket):
return isinstance(socket, bpy.types.NodeSocketColor) and \
(not socket.is_linked or socket.links[0] not in texture_node.path)
factor_socket = next(
(socket
for socket in multiply_node.inputs if is_factor_socket(socket)), None)
if factor_socket is None:
return None
if factor_socket.is_linked:
print_console(
"WARNING",
"BaseColorFactor only supports sockets without links (in Node '{}')."
.format(multiply_node.name))
return None
return list(factor_socket.default_value)[:3] + [alpha]
def __gather_emissive_factor(blender_material, export_settings):
emissive_socket = gltf2_blender_get.get_socket(blender_material, "Emissive")
if emissive_socket is None:
emissive_socket = gltf2_blender_get.get_socket_old(blender_material, "EmissiveFactor")
if isinstance(emissive_socket, bpy.types.NodeSocket):
fac = gltf2_blender_get.get_factor_from_socket(emissive_socket, kind='RGB')
if fac is None and emissive_socket.is_linked:
# In glTF, the default emissiveFactor is all zeros, so if an emission texture is connected,
# we have to manually set it to all ones.
fac = [1.0, 1.0, 1.0]
if fac == [0, 0, 0]: fac = None
return fac
return None
def __gather_base_color_texture(blender_material, export_settings):
base_color_socket = gltf2_blender_get.get_socket(blender_material, "Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_old(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(blender_material, "Background")
alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
if alpha_socket is not None and alpha_socket.is_linked:
inputs = (base_color_socket, alpha_socket, )
else:
inputs = (base_color_socket,)
return gltf2_blender_gather_texture_info.gather_texture_info(inputs, export_settings)
def __gather_base_color_texture(blender_material, export_settings):
base_color_socket = gltf2_blender_get.get_socket(blender_material, "Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_old(blender_material, "BaseColor")
alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
# keep sockets that have some texture : color and/or alpha
inputs = tuple(
socket for socket in [base_color_socket, alpha_socket]
if socket is not None and __has_image_node_from_socket(socket)
)
if not inputs:
return None, None
return gltf2_blender_gather_texture_info.gather_texture_info(inputs[0], inputs, export_settings)
def __gather_emissive_factor(blender_material, export_settings):
emissive_socket = gltf2_blender_get.get_socket(blender_material,
"Emissive")
if emissive_socket is None:
emissive_socket = gltf2_blender_get.get_socket_old(
blender_material, "EmissiveFactor")
if isinstance(emissive_socket, bpy.types.NodeSocket):
if export_settings['gltf_image_format'] != "NONE":
factor = gltf2_blender_get.get_factor_from_socket(emissive_socket,
kind='RGB')
else:
factor = gltf2_blender_get.get_const_from_default_value_socket(
emissive_socket, kind='RGB')
if factor is None and emissive_socket.is_linked:
# In glTF, the default emissiveFactor is all zeros, so if an emission texture is connected,
# we have to manually set it to all ones.
factor = [1.0, 1.0, 1.0]
if factor is None: factor = [0.0, 0.0, 0.0]
# Handle Emission Strength
strength_socket = None
if emissive_socket.node.type == 'EMISSION':
strength_socket = emissive_socket.node.inputs['Strength']
elif 'Emission Strength' in emissive_socket.node.inputs:
strength_socket = emissive_socket.node.inputs['Emission Strength']
strength = (gltf2_blender_get.get_const_from_socket(strength_socket,
kind='VALUE')
if strength_socket is not None else None)
if strength is not None:
factor = [f * strength for f in factor]
# Clamp to range [0,1]
factor = [min(1.0, f) for f in factor]
if factor == [0, 0, 0]: factor = None
return factor
return None