def gather_material(blender_material, mesh_double_sided, export_settings):
"""
Gather the material used by the blender primitive.
:param blender_material: the blender material used in the glTF primitive
:param export_settings:
:return: a glTF material
"""
if not __filter_material(blender_material, export_settings):
return None
orm_texture = __gather_orm_texture(blender_material, export_settings)
material = gltf2_io.Material(
alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
alpha_mode=__gather_alpha_mode(blender_material, export_settings),
double_sided=__gather_double_sided(blender_material, mesh_double_sided, export_settings),
emissive_factor=__gather_emissive_factor(blender_material, export_settings),
emissive_texture=__gather_emissive_texture(blender_material, export_settings),
extensions=__gather_extensions(blender_material, export_settings),
extras=__gather_extras(blender_material, export_settings),
name=__gather_name(blender_material, export_settings),
normal_texture=__gather_normal_texture(blender_material, export_settings),
occlusion_texture=__gather_occlusion_texture(blender_material, orm_texture, export_settings),
pbr_metallic_roughness=__gather_pbr_metallic_roughness(blender_material, orm_texture, export_settings)
)
return material
def __gather_material_unlit(blender_material, export_settings):
gltf2_unlit = gltf2_blender_gather_materials_unlit
info = gltf2_unlit.detect_shadeless_material(blender_material, export_settings)
if info is None:
return None
material = gltf2_io.Material(
alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
alpha_mode=__gather_alpha_mode(blender_material, export_settings),
double_sided=__gather_double_sided(blender_material, export_settings),
extensions={"KHR_materials_unlit": Extension("KHR_materials_unlit", {}, required=False)},
extras=__gather_extras(blender_material, export_settings),
name=__gather_name(blender_material, export_settings),
emissive_factor=None,
emissive_texture=None,
normal_texture=None,
occlusion_texture=None,
pbr_metallic_roughness=gltf2_io.MaterialPBRMetallicRoughness(
base_color_factor=gltf2_unlit.gather_base_color_factor(info, export_settings),
base_color_texture=gltf2_unlit.gather_base_color_texture(info, export_settings),
metallic_factor=0.0,
roughness_factor=0.9,
metallic_roughness_texture=None,
extensions=None,
extras=None,
)
)
export_user_extensions('gather_material_unlit_hook', export_settings, material, blender_material)
return material
def __gather_material_unlit(blender_material, active_uvmap_index,
export_settings):
gltf2_unlit = gltf2_blender_gather_materials_unlit
info = gltf2_unlit.detect_shadeless_material(blender_material,
export_settings)
if info is None:
return None
base_color_texture, use_active_uvmap = gltf2_unlit.gather_base_color_texture(
info, export_settings)
base_material = gltf2_io.Material(
alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
alpha_mode=__gather_alpha_mode(blender_material, export_settings),
double_sided=__gather_double_sided(blender_material, export_settings),
extensions={
"KHR_materials_unlit":
Extension("KHR_materials_unlit", {}, required=False)
},
extras=__gather_extras(blender_material, export_settings),
name=__gather_name(blender_material, export_settings),
emissive_factor=None,
emissive_texture=None,
normal_texture=None,
occlusion_texture=None,
pbr_metallic_roughness=gltf2_io.MaterialPBRMetallicRoughness(
base_color_factor=gltf2_unlit.gather_base_color_factor(
info, export_settings),
base_color_texture=base_color_texture,
metallic_factor=0.0,
roughness_factor=0.9,
metallic_roughness_texture=None,
extensions=None,
extras=None,
))
if use_active_uvmap is not None:
# Because some part of material are shared (eg pbr_metallic_roughness), we must copy the material
# Texture must be shared, but not TextureInfo
material = deepcopy(base_material)
__get_new_material_texture_shared(base_material, material)
material.pbr_metallic_roughness.base_color_texture.tex_coord = active_uvmap_index
elif use_active_uvmap is None and active_uvmap_index != -1:
# If material is not using active UVMap, we need to return the same material,
# Even if multiples meshes are using different active UVMap
material = gather_material(blender_material, -1, export_settings)
else:
material = base_material
export_user_extensions('gather_material_unlit_hook', export_settings,
material, blender_material)
return material
def gather_material(blender_material, export_settings):
"""
Gather the material used by the blender primitive.
:param blender_material: the blender material used in the glTF primitive
:param export_settings:
:return: a glTF material
"""
if not __filter_material(blender_material, export_settings):
return None
mat_unlit = __gather_material_unlit(blender_material, export_settings)
if mat_unlit is not None:
return mat_unlit
orm_texture = __gather_orm_texture(blender_material, export_settings)
material = gltf2_io.Material(
alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
alpha_mode=__gather_alpha_mode(blender_material, export_settings),
double_sided=__gather_double_sided(blender_material, export_settings),
emissive_factor=__gather_emissive_factor(blender_material,
export_settings),
emissive_texture=__gather_emissive_texture(blender_material,
export_settings),
extensions=__gather_extensions(blender_material, export_settings),
extras=__gather_extras(blender_material, export_settings),
name=__gather_name(blender_material, export_settings),
normal_texture=__gather_normal_texture(blender_material,
export_settings),
occlusion_texture=__gather_occlusion_texture(blender_material,
orm_texture,
export_settings),
pbr_metallic_roughness=__gather_pbr_metallic_roughness(
blender_material, orm_texture, export_settings))
# If emissive is set, from an emissive node (not PBR)
# We need to set manually default values for
# pbr_metallic_roughness.baseColor
if material.emissive_factor is not None and gltf2_blender_get.get_node_socket(
blender_material, bpy.types.ShaderNodeBsdfPrincipled,
"Base Color") is None:
material.pbr_metallic_roughness = gltf2_blender_gather_materials_pbr_metallic_roughness.get_default_pbr_for_emissive_node(
)
export_user_extensions('gather_material_hook', export_settings, material,
blender_material)
return material
def gather_material(blender_material, export_settings):
"""
Gather the material used by the blender primitive
:param blender_material: the blender material used in the glTF primitive
:param export_settings:
:return: a glTF material
"""
if not __filter_material(blender_material, export_settings):
return None
material = gltf2_io.Material(alpha_cutoff=None,
alpha_mode=None,
double_sided=None,
emissive_factor=None,
emissive_texture=None,
extensions=None,
extras=None,
name=None,
normal_texture=None,
occlusion_texture=None,
pbr_metallic_roughness=None)
return material
def gather_material(blender_material, active_uvmap_index, export_settings):
"""
Gather the material used by the blender primitive.
:param blender_material: the blender material used in the glTF primitive
:param export_settings:
:return: a glTF material
"""
if not __filter_material(blender_material, export_settings):
return None
mat_unlit = __gather_material_unlit(blender_material, active_uvmap_index,
export_settings)
if mat_unlit is not None:
export_user_extensions('gather_material_hook', export_settings,
mat_unlit, blender_material)
return mat_unlit
orm_texture = __gather_orm_texture(blender_material, export_settings)
emissive_texture, uvmap_actives_emissive_texture = __gather_emissive_texture(
blender_material, export_settings)
extensions, uvmap_actives_extensions = __gather_extensions(
blender_material, export_settings)
normal_texture, uvmap_actives_normal_texture = __gather_normal_texture(
blender_material, export_settings)
occlusion_texture, uvmap_actives_occlusion_texture = __gather_occlusion_texture(
blender_material, orm_texture, export_settings)
pbr_metallic_roughness, uvmap_actives_pbr_metallic_roughness = __gather_pbr_metallic_roughness(
blender_material, orm_texture, export_settings)
base_material = gltf2_io.Material(
alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
alpha_mode=__gather_alpha_mode(blender_material, export_settings),
double_sided=__gather_double_sided(blender_material, export_settings),
emissive_factor=__gather_emissive_factor(blender_material,
export_settings),
emissive_texture=emissive_texture,
extensions=extensions,
extras=__gather_extras(blender_material, export_settings),
name=__gather_name(blender_material, export_settings),
normal_texture=normal_texture,
occlusion_texture=occlusion_texture,
pbr_metallic_roughness=pbr_metallic_roughness)
# merge all uvmap_actives
uvmap_actives = []
if uvmap_actives_emissive_texture:
uvmap_actives.extend(uvmap_actives_emissive_texture)
if uvmap_actives_extensions:
uvmap_actives.extend(uvmap_actives_extensions)
if uvmap_actives_normal_texture:
uvmap_actives.extend(uvmap_actives_normal_texture)
if uvmap_actives_occlusion_texture:
uvmap_actives.extend(uvmap_actives_occlusion_texture)
if uvmap_actives_pbr_metallic_roughness:
uvmap_actives.extend(uvmap_actives_pbr_metallic_roughness)
# Because some part of material are shared (eg pbr_metallic_roughness), we must copy the material
# Texture must be shared, but not TextureInfo
material = deepcopy(base_material)
__get_new_material_texture_shared(base_material, material)
active_uvmap_index = active_uvmap_index if active_uvmap_index != 0 else None
for tex in uvmap_actives:
if tex == "emissiveTexture":
material.emissive_texture.tex_coord = active_uvmap_index
elif tex == "normalTexture":
material.normal_texture.tex_coord = active_uvmap_index
elif tex == "occlusionTexture":
material.occlusion_texture.tex_coord = active_uvmap_index
elif tex == "baseColorTexture":
material.pbr_metallic_roughness.base_color_texture.tex_coord = active_uvmap_index
elif tex == "metallicRoughnessTexture":
material.pbr_metallic_roughness.metallic_roughness_texture.tex_coord = active_uvmap_index
elif tex == "clearcoatTexture":
material.extensions["KHR_materials_clearcoat"].extension[
'clearcoatTexture'].tex_coord = active_uvmap_index
elif tex == "clearcoatRoughnessTexture":
material.extensions["KHR_materials_clearcoat"].extension[
'clearcoatRoughnessTexture'].tex_coord = active_uvmap_index
elif tex == "clearcoatNormalTexture": #TODO not tested yet
material.extensions["KHR_materials_clearcoat"].extension[
'clearcoatNormalTexture'].tex_coord = active_uvmap_index
elif tex == "transmissionTexture": #TODO not tested yet
material.extensions["KHR_materials_transmission"].extension[
'transmissionTexture'].tex_coord = active_uvmap_index
# If material is not using active UVMap, we need to return the same material,
# Even if multiples meshes are using different active UVMap
if len(uvmap_actives) == 0 and active_uvmap_index != -1:
material = gather_material(blender_material, -1, export_settings)
# If emissive is set, from an emissive node (not PBR)
# We need to set manually default values for
# pbr_metallic_roughness.baseColor
if material.emissive_factor is not None and gltf2_blender_get.get_node_socket(
blender_material, bpy.types.ShaderNodeBsdfPrincipled,
"Base Color") is None:
material.pbr_metallic_roughness = gltf2_blender_gather_materials_pbr_metallic_roughness.get_default_pbr_for_emissive_node(
)
export_user_extensions('gather_material_hook', export_settings, material,
blender_material)
return material
