bpy.ops.tlm.build_lightmaps() failed by python console

[emadurandal]

I would like to bake lightmaps by python.

so I run the following command in python console of blender.

bpy.ops.tlm.build_lightmaps()

but the following error is out on terminal console of blender

ERROR (wm.operator): C:\Users\blender\git\blender-v360\blender.git\source\blender\windowmanager\intern\wm_event_system.cc:1551 wm_operator_invoke: invalid operator call 'TLM_OT_build_lightmaps'

like this

but bpy.ops.tlm.clean_lightmaps() and bpy.ops.tlm.explore_lightmaps() works properly.

Could you check the error and fix it for bpy.ops.tlm.build_lightmaps() to work properly?

My Environment

Windows 11 Blender 3.6.13 TheLightmapper version: 0.6.3

[Naxela]

Hi, thank you for the bug report

I'm sorry for answering a bit late (life is a bit busy in the arctic).

In terms of what you're seeking, due to context issues in Blender, calling bpy.ops.tlm.build_lightmaps() doesn't quite work, but it should be possible to invoke the building process in another way by calling the following:

import thelightmapper

thelightmapper.utility.build.prepare_build(0, True)

It is more or less the same command that the button calls but without being an operator call

Let me know if it doesn't work

Cheers, Naxela

[emadurandal]

Thanks for the answer. The way works. Baked textures were output but some error occurs.

>>> thelightmapper.utility.build.prepare_build(0, True)
Logger started Init
Building lightmaps
(3, 6, 13)
No previous material for Cube
No previous material for 平面
No Previous material array for: Cube
No Previous material array for: 平面
Preparing: UV initiation for object: Cube
Preparing: UV initiation for object: 平面
PREPARE: ATLAS
PREPARE: OBJECTS
Preprocessing material for: Cube
Managing layer for Obj: Cube
Preprocessing material for: 平面
Managing layer for Obj: 平面
Config mesh catch omitted: REMEMBER TO SET IT BACK NAXELA
Beginning build
Baking 0/1 (0.0%) : Cube
Elapsed time: 0.03s | ETA remaining: 0.03s
Baking combined: Direct + Indirect
情報: 内部画像にベイクマップを保存しました。外部ファイルに保存、またはパックしてください
Baking 1/1 (100.0%) : 平面
Elapsed time: 0.16s | ETA remaining: 0.0s
Baking combined: Direct + Indirect
情報: 内部画像にベイクマップを保存しました。外部ファイルに保存、またはパックしてください
Managing build
CPU Encoding
CHECKING FOR REPART
Node2: C:\Users\ema_d\Downloads\thelightmapper_ex\Lightmaps\Cube_baked.hdr => C:\Users\ema_d\Downloads\thelightmapper_ex\Lightmaps\Cube_baked.png
CHECKING FOR REPART
Node2: C:\Users\ema_d\Downloads\thelightmapper_ex\Lightmaps\平面_baked.hdr => C:\Users\ema_d\Downloads\thelightmapper_ex\Lightmaps\平面_baked.png
Lightmap building finished

Traceback (most recent call last):
  File "<blender_console>", line 1, in <module>
  File "C:\Users\ema_d\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\thelightmapper\addon\utility\build.py", line 118, in prepare_build
    begin_build()
  File "C:\Users\ema_d\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\thelightmapper\addon\utility\build.py", line 708, in begin_build
    manage_build()
  File "C:\Users\ema_d\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\thelightmapper\addon\utility\build.py", line 1100, in manage_build
    setGui(0)
  File "C:\Users\ema_d\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\thelightmapper\addon\utility\build.py", line 1312, in setGui
    driver["TLM_UI"].remove_handle()
  File "C:\Users\ema_d\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\thelightmapper\addon\utility\gui\Viewport.py", line 77, in remove_handle
    bpy.types.SpaceView3D.draw_handler_remove(self.handle2, 'WINDOW')
ValueError: callback_remove(handler): NULL handler given, invalid or already removed

But it worked anyway, so it is good. You may close this Issue. Thank you.