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#
# Copyright 2011-2014 Blender Foundation
#
# 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.
#
# <pep8 compliant>
import bpy
from bpy.app.handlers import persistent
def check_is_new_shading_material(material):
if not material.node_tree:
return False
for node in material.node_tree.nodes:
# If material has any node with ONLY new shading system
# compatibility then it's considered a Cycles material
# and versioning code would need to perform on it.
#
# We can not check for whether NEW_SHADING in compatibility
# because some nodes could have compatibility with both old
# and new shading system and they can't be used for any
# decision here.
if node.shading_compatibility == {'NEW_SHADING'}:
return True
# If node is only compatible with old shading system
# then material can not be Cycles material and we
# can stopiterating nodes now.
if node.shading_compatibility == {'OLD_SHADING'}:
return False
return False
def foreach_notree_node(nodetree, callback, traversed):
if nodetree in traversed:
return
traversed.add(nodetree)
for node in nodetree.nodes:
callback(node)
if node.bl_idname == 'ShaderNodeGroup':
foreach_notree_node(node.node_tree, callback, traversed)
def foreach_cycles_node(callback):
traversed = set()
for material in bpy.data.materials:
if check_is_new_shading_material(material):
foreach_notree_node(material.node_tree,
callback,
traversed)
def mapping_node_order_flip(node):
"""
Flip euler order of mapping shader node
"""
if node.bl_idname == 'ShaderNodeMapping':
rot = node.rotation.copy()
rot.order = 'ZYX'
quat = rot.to_quaternion()
node.rotation = quat.to_euler('XYZ')
@persistent
def do_versions(self):
# We don't modify startup file because it assumes to
# have all the default values only.
if not bpy.data.is_saved:
return
# Clamp Direct/Indirect separation in 270
if bpy.data.version <= (2, 70, 0):
for scene in bpy.data.scenes:
cscene = scene.cycles
sample_clamp = cscene.get("sample_clamp", False)
if (sample_clamp and
not cscene.is_property_set("sample_clamp_direct") and
not cscene.is_property_set("sample_clamp_indirect")):
cscene.sample_clamp_direct = sample_clamp
cscene.sample_clamp_indirect = sample_clamp
# Change of Volume Bounces in 271
if bpy.data.version <= (2, 71, 0):
for scene in bpy.data.scenes:
cscene = scene.cycles
if not cscene.is_property_set("volume_bounces"):
cscene.volume_bounces = 1
# Caustics Reflective/Refractive separation in 272
if bpy.data.version <= (2, 72, 0):
for scene in bpy.data.scenes:
cscene = scene.cycles
if (cscene.get("no_caustics", False) and
not cscene.is_property_set("caustics_reflective") and
not cscene.is_property_set("caustics_refractive")):
cscene.caustics_reflective = False
cscene.caustics_refractive = False
# Euler order was ZYX in previous versions.
if bpy.data.version <= (2, 73, 4):
foreach_cycles_node(mapping_node_order_flip)
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