How to add render slot with python?

Question

Override method work only if I have opened image editor and "Render Result" is selected there

import bpy
for area in bpy.context.screen.areas:
    if area.type == 'IMAGE_EDITOR':
        override = bpy.context.copy()
        override['area'] = area
        bpy.ops.image.add_render_slot(override)
        break

add line bpy.context.area.ui_type = 'IMAGE_EDITOR' to switch to image editor. your code will give poll failed error, see for more info on overriding: https://blender.stackexchange.com/a/270716/142292 — Harry McKenzie, Aug 03 '22 at 08:56

Harry McKenzie · Accepted Answer · 2022-08-03T09:42:28.367

This script will switch the Editor Type to IMAGE_EDITOR and set the active image as bpy.data.images['Render Result'].

import bpy
area_type = 'IMAGE_EDITOR'
bpy.context.area.ui_type = area_type # or use (bpy.context.window.screen.areas[5].ui_type = area_type) to change another area to image editor
areas  = [area for area in bpy.context.window.screen.areas if area.type == area_type]
area = areas[0]
area.spaces.active.image = bpy.data.images['Render Result']
override = {
    'window': bpy.context.window,
    'screen': bpy.context.window.screen,
    'area': area,
    'region': [region for region in area.regions if region.type == 'WINDOW'][0],
}
bpy.ops.image.add_render_slot(override)

ps: this is deprecated way of context overriding, see this answer for the new way of context overriding. — Harry McKenzie, Oct 05 '23 at 15:49

How to add render slot with python?

1 Answers1