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FBX Export: export dummy default material instaed of nothing, when handling 

unsuported mat type (like nodal ones).

See T41396 for rationals (having dummy placeholder still helps e.g. with
face-assigned materials...). Thanks to piiichan (Arnaud Couturier) for raising that issue.
This commit is contained in:
Bastien Montagne 2014-08-11 16:23:47 +02:00
parent b834b8d394
commit e35de9d174
Notes: blender-bot 2023-02-14 20:04:16 +01:00 
Referenced by issue #41396, FBX export fails with some very simple material setups
1 changed files with 48 additions and 38 deletions
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86
io_scene_fbx/export_fbx_bin.py
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@ -1102,7 +1102,7 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
# We have to validate mat indices, and map them to FBX indices.
# Note a mat might not be in me_fbxmats_idx (e.g. node mats are ignored).
blmats_to_fbxmats_idxs = [me_fbxmats_idx[m] for m in me_blmats if m in me_fbxmats_idx]
blmats_to_fbxmats_idxs = [me_fbxmats_idx[m] for m in me_blmats]
mat_idx_limit = len(blmats_to_fbxmats_idxs)
def_mat = blmats_to_fbxmats_idxs[0]
_gen = (blmats_to_fbxmats_idxs[m] if m < mat_idx_limit else def_mat for m in t_pm)
@ -1180,6 +1180,11 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
done_meshes.add(me_key)
def check_skip_material(mat):
"""Simple helper to check whether we actually support exporting that material or not"""
return mat.type not in {'SURFACE'} or mat.use_nodes
def fbx_data_material_elements(root, mat, scene_data):
"""
Write the Material data block.
@ -1189,8 +1194,11 @@ def fbx_data_material_elements(root, mat, scene_data):
ambient_color = next(iter(scene_data.data_world.keys())).ambient_color
mat_key, _objs = scene_data.data_materials[mat]
skip_mat = check_skip_material(mat)
mat_type = b"Phong"
# Approximation...
mat_type = b"Phong" if mat.specular_shader in {'COOKTORR', 'PHONG', 'BLINN'} else b"Lambert"
if not skip_mat and mat.specular_shader not in {'COOKTORR', 'PHONG', 'BLINN'}:
mat_type = b"Lambert"
fbx_mat = elem_data_single_int64(root, b"Material", get_fbx_uuid_from_key(mat_key))
fbx_mat.add_string(fbx_name_class(mat.name.encode(), b"Material"))
@ -1204,35 +1212,36 @@ def fbx_data_material_elements(root, mat, scene_data):
tmpl = elem_props_template_init(scene_data.templates, b"Material")
props = elem_properties(fbx_mat)
elem_props_template_set(tmpl, props, "p_string", b"ShadingModel", mat_type.decode())
elem_props_template_set(tmpl, props, "p_color", b"EmissiveColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"EmissiveFactor", mat.emit)
elem_props_template_set(tmpl, props, "p_color", b"AmbientColor", ambient_color)
elem_props_template_set(tmpl, props, "p_number", b"AmbientFactor", mat.ambient)
elem_props_template_set(tmpl, props, "p_color", b"DiffuseColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"DiffuseFactor", mat.diffuse_intensity)
elem_props_template_set(tmpl, props, "p_color", b"TransparentColor",
mat.diffuse_color if mat.use_transparency else (1.0, 1.0, 1.0))
elem_props_template_set(tmpl, props, "p_number", b"TransparencyFactor",
1.0 - mat.alpha if mat.use_transparency else 0.0)
elem_props_template_set(tmpl, props, "p_number", b"Opacity", mat.alpha if mat.use_transparency else 1.0)
elem_props_template_set(tmpl, props, "p_vector_3d", b"NormalMap", (0.0, 0.0, 0.0))
# Not sure about those...
"""
b"Bump": ((0.0, 0.0, 0.0), "p_vector_3d"),
b"BumpFactor": (1.0, "p_double"),
b"DisplacementColor": ((0.0, 0.0, 0.0), "p_color_rgb"),
b"DisplacementFactor": (0.0, "p_double"),
"""
if mat_type == b"Phong":
elem_props_template_set(tmpl, props, "p_color", b"SpecularColor", mat.specular_color)
elem_props_template_set(tmpl, props, "p_number", b"SpecularFactor", mat.specular_intensity / 2.0)
# See Material template about those two!
elem_props_template_set(tmpl, props, "p_number", b"Shininess", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_number", b"ShininessExponent", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_color", b"ReflectionColor", mat.mirror_color)
elem_props_template_set(tmpl, props, "p_number", b"ReflectionFactor",
mat.raytrace_mirror.reflect_factor if mat.raytrace_mirror.use else 0.0)
if not skip_mat:
elem_props_template_set(tmpl, props, "p_string", b"ShadingModel", mat_type.decode())
elem_props_template_set(tmpl, props, "p_color", b"EmissiveColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"EmissiveFactor", mat.emit)
elem_props_template_set(tmpl, props, "p_color", b"AmbientColor", ambient_color)
elem_props_template_set(tmpl, props, "p_number", b"AmbientFactor", mat.ambient)
elem_props_template_set(tmpl, props, "p_color", b"DiffuseColor", mat.diffuse_color)
elem_props_template_set(tmpl, props, "p_number", b"DiffuseFactor", mat.diffuse_intensity)
elem_props_template_set(tmpl, props, "p_color", b"TransparentColor",
mat.diffuse_color if mat.use_transparency else (1.0, 1.0, 1.0))
elem_props_template_set(tmpl, props, "p_number", b"TransparencyFactor",
1.0 - mat.alpha if mat.use_transparency else 0.0)
elem_props_template_set(tmpl, props, "p_number", b"Opacity", mat.alpha if mat.use_transparency else 1.0)
elem_props_template_set(tmpl, props, "p_vector_3d", b"NormalMap", (0.0, 0.0, 0.0))
# Not sure about those...
"""
b"Bump": ((0.0, 0.0, 0.0), "p_vector_3d"),
b"BumpFactor": (1.0, "p_double"),
b"DisplacementColor": ((0.0, 0.0, 0.0), "p_color_rgb"),
b"DisplacementFactor": (0.0, "p_double"),
"""
if mat_type == b"Phong":
elem_props_template_set(tmpl, props, "p_color", b"SpecularColor", mat.specular_color)
elem_props_template_set(tmpl, props, "p_number", b"SpecularFactor", mat.specular_intensity / 2.0)
# See Material template about those two!
elem_props_template_set(tmpl, props, "p_number", b"Shininess", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_number", b"ShininessExponent", (mat.specular_hardness - 1.0) / 5.10)
elem_props_template_set(tmpl, props, "p_color", b"ReflectionColor", mat.mirror_color)
elem_props_template_set(tmpl, props, "p_number", b"ReflectionFactor",
mat.raytrace_mirror.reflect_factor if mat.raytrace_mirror.use else 0.0)
elem_props_template_finalize(tmpl, props)
@ -2060,13 +2069,12 @@ def fbx_data_from_scene(scene, settings):
# Note theoretically, FBX supports any kind of materials, even GLSL shaders etc.
# However, I doubt anything else than Lambert/Phong is really portable!
# We support any kind of 'surface' shader though, better to have some kind of default Lambert than nothing.
# TODO: Support nodes (*BIG* todo!).
if mat.type in {'SURFACE'} and not mat.use_nodes:
mat_data = data_materials.get(mat)
if mat_data is not None:
mat_data[1].append(ob_obj)
else:
data_materials[mat] = (get_blenderID_key(mat), [ob_obj])
# Note we want to keep a 'dummy' empty mat even when we can't really support it, see T41396.
mat_data = data_materials.get(mat)
if mat_data is not None:
mat_data[1].append(ob_obj)
else:
data_materials[mat] = (get_blenderID_key(mat), [ob_obj])
# Note FBX textures also hold their mapping info.
# TODO: Support layers?
@ -2075,6 +2083,8 @@ def fbx_data_from_scene(scene, settings):
data_videos = OrderedDict()
# For now, do not use world textures, don't think they can be linked to anything FBX wise...
for mat in data_materials.keys():
if check_skip_material(mat):
continue
for tex, use_tex in zip(mat.texture_slots, mat.use_textures):
if tex is None or not use_tex:
continue