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_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_base_color_factor(info, export_settings):
rgb, alpha = None, None
if 'rgb_socket' in info:
rgb = gltf2_blender_get.get_factor_from_socket(info['rgb_socket'], kind='RGB')
if 'alpha_socket' in info:
alpha = gltf2_blender_get.get_factor_from_socket(info['alpha_socket'], kind='VALUE')
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):
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):
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_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
def __gather_clearcoat_extension(blender_material, export_settings):
clearcoat_enabled = False
has_clearcoat_texture = False
has_clearcoat_roughness_texture = False
clearcoat_extension = {}
clearcoat_roughness_slots = ()
clearcoat_socket = gltf2_blender_get.get_socket(blender_material,
'Clearcoat')
clearcoat_roughness_socket = gltf2_blender_get.get_socket(
blender_material, 'Clearcoat Roughness')
clearcoat_normal_socket = gltf2_blender_get.get_socket(
blender_material, 'Clearcoat Normal')
if isinstance(clearcoat_socket,
bpy.types.NodeSocket) and not clearcoat_socket.is_linked:
clearcoat_extension['clearcoatFactor'] = clearcoat_socket.default_value
clearcoat_enabled = clearcoat_extension['clearcoatFactor'] > 0
elif __has_image_node_from_socket(clearcoat_socket):
fac = gltf2_blender_get.get_factor_from_socket(clearcoat_socket,
kind='VALUE')
# default value in glTF is 0.0, but if there is a texture without factor, use 1
clearcoat_extension['clearcoatFactor'] = fac if fac != None else 1.0
has_clearcoat_texture = True
clearcoat_enabled = True
if not clearcoat_enabled:
return None
if isinstance(
clearcoat_roughness_socket,
bpy.types.NodeSocket) and not clearcoat_roughness_socket.is_linked:
clearcoat_extension[
'clearcoatRoughnessFactor'] = clearcoat_roughness_socket.default_value
elif __has_image_node_from_socket(clearcoat_roughness_socket):
fac = gltf2_blender_get.get_factor_from_socket(
clearcoat_roughness_socket, kind='VALUE')
# default value in glTF is 0.0, but if there is a texture without factor, use 1
clearcoat_extension[
'clearcoatRoughnessFactor'] = fac if fac != None else 1.0
has_clearcoat_roughness_texture = True
# Pack clearcoat (R) and clearcoatRoughness (G) channels.
if has_clearcoat_texture and has_clearcoat_roughness_texture:
clearcoat_roughness_slots = (
clearcoat_socket,
clearcoat_roughness_socket,
)
elif has_clearcoat_texture:
clearcoat_roughness_slots = (clearcoat_socket, )
elif has_clearcoat_roughness_texture:
clearcoat_roughness_slots = (clearcoat_roughness_socket, )
if len(clearcoat_roughness_slots) > 0:
if has_clearcoat_texture:
clearcoat_extension[
'clearcoatTexture'] = gltf2_blender_gather_texture_info.gather_texture_info(
clearcoat_socket,
clearcoat_roughness_slots,
export_settings,
)
if has_clearcoat_roughness_texture:
clearcoat_extension[
'clearcoatRoughnessTexture'] = gltf2_blender_gather_texture_info.gather_texture_info(
clearcoat_roughness_socket,
clearcoat_roughness_slots,
export_settings,
)
if __has_image_node_from_socket(clearcoat_normal_socket):
clearcoat_extension[
'clearcoatNormalTexture'] = gltf2_blender_gather_texture_info.gather_material_normal_texture_info_class(
clearcoat_normal_socket, (clearcoat_normal_socket, ),
export_settings)
return Extension('KHR_materials_clearcoat', clearcoat_extension, False)
