Suggestion: Gamma and Brightness Standalone

[Nyanch]

Unsure if this has been talked about before, but TDM uses Windows to configure its gamma and brightness. This means that after you exit the game, your gamma and brightness carry over into the Windows OS. This is bad IMO. I usually like to configure my gamma and brightness according to my game's environment.

[SteveL]

Agreed, this is an annoyance. Does anyone know how to fix it? And is it the same on Linux?

[nbohr1more]

Looking at this, it seems that there is no real "safe" getDeviceGammaRamp and setDeviceGammaRamp method in OpenGL.

Those who have made safe solutions after basically doing gamma work in the shaders rather than at the device level. I couldn't

find resources for the latter by I know mh did some gamma shaders for mhquake and he struggled a little with the added performance

hit.

 

As a side note, apparently "gamma corrected lighting" is apparently hot in Google results:

 

http://blog.wolfire.com/2010/02/Gamma-correct-lighting

[nbohr1more]

Similar issue resolved here:

 

https://social.msdn.microsoft.com/Forums/en-US/60375e7d-b636-480f-85f9-df703a07d5c8/monitor-brightness-setdevicegammaramp?forum=Vsexpressvb

[nbohr1more]

Ah, here's some GLSL examples:

 

http://wes-uoit-comp-graphics.blogspot.com/2013/04/post-processing-levels-brightness.html

[Springheel]

My gamma is reset upon exiting, unless TDM crashes.

[SteveL]

Come to think of it, this is a problem I've noticed occasionally, not consistently.

 

@nb: I can't believe we'd have to use a post processing effect in a shader! Well maybe to do it completely safely, but that feels like overkill. Re the first link on SetDeviceGammaRamp, I do sometimes see error messages on the console about that, so I guess that's worth following up.

[Bikerdude]

I have gotten around the gamma issue by setting my desktop gamma to the same as in-game = 1.33. So I dont see the change, but yes it would be nice to find a fix for this albiet very low down on the importance queue.