SSAO and other similar effects are not taken into account in the portal view

[Klaim]

The portal view doesnt seem to take exactly the same screen-space rendering effects as the player's camera in this recoridng (in my game):
observe the lighting and shadows difference between before and after teleporting.

https://drive.google.com/file/d/1yXmsuPd--q61gfaE5ieaeq2gBADHw0Fb/view?usp=drive_link

I failed to reproduce this in the demo for now: I changed the world environment in the Maze level to reflect what I have in my game, but I dont see the difference between the portal and not. I think the positionning of the portals may play a role.

Note: If you could tell me what causes the black thing in the portal view at the beginning that would help me a lot.

[VojtaStruhar]

Thanks for the video. My first though is that postprocessing is susceptible to being applied twice when dealing with portals. I mainly worried about tonemapping, here is the piece of code that disables tonemapping on a portal camera:

godot-portals-plugin/addons/portals/scripts/portal_3d.gd

Lines 641 to 646 in cf9c4c2

	var adjusted_env: Environment = player_camera.environment.duplicate() \
	if player_camera.environment \
	else player_camera.get_world_3d().environment.duplicate()
	adjusted_env.tonemap_mode = Environment.TONE_MAPPER_LINEAR
	adjusted_env.tonemap_exposure = 1

Perhaps we should add another line for fixing up SSAO. Although the level Visual uses SSAO and I seem to remember it was not an issue.

Anyways - yes, postprocessing gets applied twice sometimes and I didn't handle all the cases :)

Thanks for the issue!