RNA Properties

This page documents the new RNA properties that Industrial CG Platform adds to Blender's data model.

ViewLayer Properties

ViewLayer.use_deep

Property	Value
Type	BoolProperty
Default	False
Description	Enable Deep EXR output for this ViewLayer
UI Location	Properties > View Layer > Passes

# Python access
view_layer = bpy.context.view_layer
view_layer.use_deep = True

ViewLayer.use_lightgroup_light_pass_aovs

Property	Value
Type	BoolProperty
Default	False
Description	Enable per-lightgroup lobe pass output
UI Location	Properties > View Layer > Passes > Light

view_layer.use_lightgroup_light_pass_aovs = True

Per-Lobe AOV Booleans

Each lobe component can be individually enabled:

view_layer.use_lightgroup_diffuse_direct = True
view_layer.use_lightgroup_diffuse_indirect = True
view_layer.use_lightgroup_glossy_direct = True
view_layer.use_lightgroup_glossy_indirect = True
view_layer.use_lightgroup_transmission_direct = True
view_layer.use_lightgroup_transmission_indirect = True
view_layer.use_lightgroup_volume_direct = True
view_layer.use_lightgroup_volume_indirect = True

Light Properties

Light.shadow_color

Property	Value
Type	FloatVectorProperty (RGB)
Default	(0.0, 0.0, 0.0) — no shadow tint
Subtype	COLOR
Min/Max	0.0 / 1.0 per channel
Description	Color tint applied to the shadow region of this light
UI Location	Properties > Object Data > Light

light = bpy.data.lights['Key']
light.shadow_color = (0.1, 0.05, 0.2)  # Subtle purple shadow tint

World Properties

World.shadow_color

Property	Value
Type	FloatVectorProperty (RGB)
Default	(0.0, 0.0, 0.0) — no shadow tint
Subtype	COLOR
Min/Max	0.0 / 1.0 per channel
Description	Color tint applied to the shadow region of the world lighting
UI Location	Properties > World

world = bpy.data.worlds['World']
world.shadow_color = (0.05, 0.08, 0.15)  # Cool blue world shadows

Blender Core Extensions

PROP_SEARCH_KEEP_ORDER

Property	Value
Type	RNA flag on PropertyRNA
Location	source/blender/makesrna/RNA_types.hh
Purpose	Skip alphabetical re-sorting in template_search for RNA collections

This flag is applied to Scene.view_layers so that the native ViewLayer selector respects the real RNA order (as set by the ViewLayer Manager's reorder controls) instead of alphabetically sorting entries.

// source/blender/makesrna/intern/rna_scene.cc
RNA_def_property_flag(prop, PROP_SEARCH_KEEP_ORDER);

Cycles Overscan Properties

The following properties configure the EXR Overscan settings under the Cycles engine settings (accessible via Scene.cycles).

CyclesRenderSettings.overscan_mode

Property	Value
Type	Enum ('PERCENTAGE', 'PIXELS')
Default	'PERCENTAGE'
Description	Sizing mode for the overscan region
UI Location	Properties > Output > Overscan

CyclesRenderSettings.overscan_size

Property	Value
Type	FloatProperty
Default	0.0 (range: 0.0 to 100.0)
Description	Sizing percentage for overscan on all sides (Percentage mode)
UI Location	Properties > Output > Overscan > Size

Margin Properties (Pixels Mode)

The following properties specify custom border margins in pixels when overscan_mode is set to 'PIXELS':

• CyclesRenderSettings.overscan_left (Int, default 0)
• CyclesRenderSettings.overscan_right (Int, default 0)
• CyclesRenderSettings.overscan_bottom (Int, default 0)
• CyclesRenderSettings.overscan_top (Int, default 0)

# Python access
scene = bpy.context.scene
scene.cycles.overscan_mode = 'PERCENTAGE'
scene.cycles.overscan_size = 10.0

Source Files

File	Purpose
source/blender/makesrna/intern/rna_scene.cc	ViewLayer lobe AOV properties, PROP_SEARCH_KEEP_ORDER
source/blender/makesrna/RNA_types.hh	PROP_SEARCH_KEEP_ORDER flag definition
source/blender/editors/interface/interface_utils.cc	Skip alphabetical sort when PROP_SEARCH_KEEP_ORDER is set
intern/cycles/blender/addon/properties.py	Cycles overscan property declarations
scripts/startup/bl_ui/properties_output.py	UI layout for the Overscan output panel