Displayed image is too dark

[ghost]

Hello,

Not sure what the problem is here so maybe you can shed some light(pun intended) on this
It seems that everything i run using the pvkrun and Vulkan looks really dark
If i run the game with primusrun and opengl, it looks fine
Not really sure is it because of pvkrun, vulkan or even my GPU
This is Rise of the Tomb Raider with gamma on max

As you can see, it's really dark, I can't see a thing most of the time
Other games look like this too but i don't have any screenshots at the moment, but Mad Max with vulkan is at least 50% darker than the OpenGL and i have to crank up gamma to the max to see

You did an awesome job with this btw.

My system:

OS: Debian Buster(testing)
Kernel: 4.19.0-4-amd64
Nvidia Driver: 410.104
Nvidia GPU: GTX 765m

Thank you very much!
Kind regards,

[felixdoerre]

Have you tried the intel-vulkan-drivers? Is the image dark there as well?

[edoantonioco]

Hello. I just wanted to say that I also have this issue with Mad Max. It looks way darker in vulkan mode, so its sadly not an option to be played that way.

here is a couple of screenshots, dark one is in vulkan mode other one in opengl
https://imgur.com/a/KZwKr2e

In intel card (vulkan mode) the game crashes in my case.

@Tkopic001 you could try in nvidia-xrun to see if you can repro the issue there. Unfortunately since I reinstalled my OS I cant use that tool anymore so I cant test it there.

[edoantonioco]

Now that nvidia finally supports optimus, I can see the bug in Mad Max vulkan mode no longer happens. So its probably related to this library somehow (which is still useful for people with older cards)

[felixdoerre]

That's interesting. The best guess I have why the image would get dark, is that something is wrong with color space conversion (UNORM <-> SRGB).