intern/cycles/blender/addon/version_update.py


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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


@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

    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