diff options
Diffstat (limited to 'io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py')
| -rw-r--r-- | io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py new file mode 100644 index 00000000..65c164b4 --- /dev/null +++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py @@ -0,0 +1,81 @@ +# SPDX-License-Identifier: Apache-2.0 +# Copyright 2018-2022 The glTF-Blender-IO authors. + +import bpy +from io_scene_gltf2.io.com.gltf2_io_extensions import Extension +from io_scene_gltf2.blender.exp import gltf2_blender_get +from io_scene_gltf2.blender.exp import gltf2_blender_gather_texture_info + +def export_clearcoat(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 gltf2_blender_get.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, 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 gltf2_blender_get.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,) + + use_actives_uvmaps = [] + + if len(clearcoat_roughness_slots) > 0: + if has_clearcoat_texture: + clearcoat_texture, clearcoat_texture_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_texture_info( + clearcoat_socket, + clearcoat_roughness_slots, + export_settings, + ) + clearcoat_extension['clearcoatTexture'] = clearcoat_texture + if clearcoat_texture_use_active_uvmap: + use_actives_uvmaps.append("clearcoatTexture") + if has_clearcoat_roughness_texture: + clearcoat_roughness_texture, clearcoat_roughness_texture_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_texture_info( + clearcoat_roughness_socket, + clearcoat_roughness_slots, + export_settings, + ) + clearcoat_extension['clearcoatRoughnessTexture'] = clearcoat_roughness_texture + if clearcoat_roughness_texture_use_active_uvmap: + use_actives_uvmaps.append("clearcoatRoughnessTexture") + if gltf2_blender_get.has_image_node_from_socket(clearcoat_normal_socket): + clearcoat_normal_texture, clearcoat_normal_texture_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_material_normal_texture_info_class( + clearcoat_normal_socket, + (clearcoat_normal_socket,), + export_settings + ) + clearcoat_extension['clearcoatNormalTexture'] = clearcoat_normal_texture + if clearcoat_normal_texture_use_active_uvmap: + use_actives_uvmaps.append("clearcoatNormalTexture") + + return Extension('KHR_materials_clearcoat', clearcoat_extension, False), use_actives_uvmaps
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