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# Copyright 2018 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import bpy
from io_scene_gltf2.io.com import gltf2_io
from io_scene_gltf2.blender.exp import gltf2_blender_gather_texture_info
from io_scene_gltf2.blender.exp import gltf2_blender_get
from io_scene_gltf2.blender.exp.gltf2_blender_gather_cache import cached
@cached
def gather_material_pbr_metallic_roughness(blender_material, export_settings):
if not __filter_pbr_material(blender_material, export_settings):
return None
material = gltf2_io.MaterialPBRMetallicRoughness(
base_color_factor=__gather_base_color_factor(blender_material, export_settings),
base_color_texture=__gather_base_color_texture(blender_material, export_settings),
extensions=__gather_extensions(blender_material, export_settings),
extras=__gather_extras(blender_material, export_settings),
metallic_factor=__gather_metallic_factor(blender_material, export_settings),
metallic_roughness_texture=__gather_metallic_roughness_texture(blender_material, export_settings),
roughness_factor=__gather_roughness_factor(blender_material, export_settings)
)
return material
def __filter_pbr_material(blender_material, export_settings):
return True
def __gather_base_color_factor(blender_material, export_settings):
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot_old(blender_material, "BaseColorFactor")
if isinstance(base_color_socket, bpy.types.NodeSocket) and not base_color_socket.is_linked:
return list(base_color_socket.default_value)
return None
def __gather_base_color_texture(blender_material, export_settings):
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Base Color")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "BaseColor")
if base_color_socket is None:
base_color_socket = gltf2_blender_get.get_socket_or_texture_slot_old(blender_material, "BaseColor")
return gltf2_blender_gather_texture_info.gather_texture_info((base_color_socket,), export_settings)
def __gather_extensions(blender_material, export_settings):
return None
def __gather_extras(blender_material, export_settings):
return None
def __gather_metallic_factor(blender_material, export_settings):
metallic_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Metallic")
if metallic_socket is None:
metallic_socket = gltf2_blender_get.get_socket_or_texture_slot_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_metallic_roughness_texture(blender_material, export_settings):
metallic_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Metallic")
roughness_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Roughness")
if metallic_socket is None and roughness_socket is None:
metallic_roughness = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "MetallicRoughness")
if metallic_roughness is None:
metallic_roughness = gltf2_blender_get.get_socket_or_texture_slot_old(blender_material, "MetallicRoughness")
texture_input = (metallic_roughness,)
else:
texture_input = (metallic_socket, roughness_socket)
return gltf2_blender_gather_texture_info.gather_texture_info(texture_input, export_settings)
def __gather_roughness_factor(blender_material, export_settings):
roughness_socket = gltf2_blender_get.get_socket_or_texture_slot(blender_material, "Roughness")
if roughness_socket is None:
roughness_socket = gltf2_blender_get.get_socket_or_texture_slot_old(blender_material, "RoughnessFactor")
if isinstance(roughness_socket, bpy.types.NodeSocket) and not roughness_socket.is_linked:
return roughness_socket.default_value
return None
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