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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
import bpy
from bpy.types import (
Operator,
Panel,
)
from bpy.props import (StringProperty, )
bl_info = {
"name": "Dependency Graph Debug",
"author": "Sergey Sharybin",
"version": (0, 1),
"blender": (2, 79, 0),
"description": "Various dependency graph debugging tools",
"warning": "",
"wiki_url": "",
"tracker_url": "",
"category": "Development"}
def _get_depsgraph(context):
scene = context.scene
if bpy.app.version < (2, 80, 0,):
return scene.depsgraph
else:
scene_layer = scene.view_layers.active
return scene_layer.depsgraph
class SCENE_OT_depsgraph_graphviz(Operator):
bl_idname = "scene.depsgraph_graphviz"
bl_label = "Save Depsgraph"
bl_description = "Save current scene's dependency graph to a graphviz file"
filepath = StringProperty(
name="File Path",
description="Filepath used for saving the file",
maxlen=1024,
subtype='FILE_PATH',
)
@classmethod
def poll(cls, context):
depsgraph = _get_depsgraph(context)
return depsgraph is not None
def invoke(self, context, event):
import os
if not self.filepath:
blend_filepath = context.blend_data.filepath
if not blend_filepath:
blend_filepath = "deg"
else:
blend_filepath = os.path.splitext(blend_filepath)[0]
self.filepath = blend_filepath + ".dot"
context.window_manager.fileselect_add(self)
return {'RUNNING_MODAL'}
def execute(self, context):
depsgraph = _get_depsgraph(context)
depsgraph.debug_graphviz(self.filepath)
return {'FINISHED'}
class SCENE_OT_depsgraph_image(Operator):
bl_idname = "scene.depsgraph_image"
bl_label = "Depsgraph as Image"
bl_description = "Create new image datablock from the dependency graph"
def _getOrCreateImageForAbsPath(self, filepath):
for image in bpy.data.images:
if image.filepath == filepath:
image.reload()
return image
return bpy.data.images.load(filepath, check_existing=True)
def _findBestImageEditor(self, context, image):
first_none_editor = None
for area in context.screen.areas:
if area.type != 'IMAGE_EDITOR':
continue
for space in area.spaces:
if space.type != 'IMAGE_EDITOR':
continue
if not space.image:
first_none_editor = space
else:
if space.image == image:
return space
return first_none_editor
def execute(self, context):
import os
import subprocess
import tempfile
# Create temporary file.
fd, dot_filepath = tempfile.mkstemp(suffix=".dot")
os.close(fd)
# Save dependency graph to graphviz file.
depsgraph = _get_depsgraph(context)
depsgraph.debug_graphviz(dot_filepath)
# Convert graphviz to PNG image.
png_filepath = os.path.join(bpy.app.tempdir, "depsgraph.png")
command = ("dot", "-Tpng", dot_filepath, "-o", png_filepath)
image = None
try:
subprocess.run(command)
# Open image in Blender.
image = self._getOrCreateImageForAbsPath(png_filepath)
except:
self.report({'ERROR'}, "Error invoking dot command")
return {'CANCELLED'}
finally:
# Remove graphviz file.
os.remove(dot_filepath)
editor = self._findBestImageEditor(context, image)
if editor:
editor.image = image
return {'FINISHED'}
class SCENE_PT_depsgraph(bpy.types.Panel):
bl_label = "Dependency Graph"
bl_space_type = "PROPERTIES"
bl_region_type = "WINDOW"
bl_context = "scene"
bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(cls, context):
if bpy.app.version >= (2, 80, 0,):
return False
depsgraph = _get_depsgraph(context)
return depsgraph is not None
def draw(self, context):
layout = self.layout
layout.operator("scene.depsgraph_graphviz")
layout.operator("scene.depsgraph_image")
class RENDERLAYER_PT_depsgraph(bpy.types.Panel):
bl_label = "Dependency Graph"
bl_space_type = "PROPERTIES"
bl_region_type = "WINDOW"
bl_context = "view_layer"
bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(cls, context):
if bpy.app.version < (2, 80, 0,):
return False
depsgraph = _get_depsgraph(context)
return depsgraph is not None
def draw(self, context):
layout = self.layout
layout.operator("scene.depsgraph_graphviz")
layout.operator("scene.depsgraph_image")
def register():
bpy.utils.register_class(SCENE_OT_depsgraph_graphviz)
bpy.utils.register_class(SCENE_OT_depsgraph_image)
bpy.utils.register_class(SCENE_PT_depsgraph)
bpy.utils.register_class(RENDERLAYER_PT_depsgraph)
def unregister():
bpy.utils.unregister_class(SCENE_OT_depsgraph_graphviz)
bpy.utils.unregister_class(SCENE_OT_depsgraph_image)
bpy.utils.unregister_class(SCENE_PT_depsgraph)
bpy.utils.unregister_class(RENDERLAYER_PT_depsgraph)
if __name__ == "__main__":
register()
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