Add tonemapping switch to bloom 2d example

[hukasu]

Objective

Allow switching through available Tonemapping algorithms on bloom_2d example to compare between them

Solution

Add a resource to bloom_2d that holds current tonemapping algorithm, a method to get the next one, and a check of key press to make the switch

Testing

Ran bloom_2d example with modified code

Showcase

https://github.com/user-attachments/assets/920b2d6a-b237-4b19-be9d-9b651b4dc913
Note: Sprite flashing is already described in #17763

[rparrett]

Nice, this seems useful beyond the debugging you were using it for. I played with this once a while back when I was trying to figure out if bloom would work for one of my games.

I don't want to nitpick this to death. I could follow up with the other suggestions later, but we should fix the outdated comment.

[JMS55]

I'm not a huge fan of this, personally. The example should be for demonstrating bloom, not tonemapping.

[hukasu]

I'm not a huge fan of this, personally. The example should be for demonstrating bloom, not tonemapping.

but tonemapping affects the appearance of bloom, wouldn't it be important for the user to see the difference?