Sample Screen Color/Color Picker don't work on second monitor

[Juraj]

I have a nagging feeling it will be connected to Windows DPI scaling in some way.

[GeorgeK]

I have a nagging feeling it will be connected to Windows DPI scaling in some way.

Possibly! I will be testing this soon with 2k and 4k monitors and asymmetrical  DPI scaling.

[maru]

So far we were not able to reproduce this (tested on at least 3 computers, also with 4k monitors), so we will need some more details. We will also keep testing with different scaling settings, etc.
Some extra questions:

- is this happening only with windows viewer? (as Romullus suggested)
- which Windows, Corona, and Max versions are you using (this applies mostly to new reports if this information has not been provided yet)
- is this happening with 100% Windows scaling too?

[Juraj]

Tested everything except scaling because I can't do that because of work right now.

It's not application specific, all apps (including Viewer) work within main central monitor, and none work correctly on secondary displays.

[maru]

Confirmed, reproduced! This happens when using two or more monitors, and they are using different scaling. E.g. if you have a main 4k monitor with 100% scaling and secondary Full HD monitor with 150% scaling. But it happens with both Corona picker and default Max picker, so I'm not really sure if we can do anything about it. We will look into it though.

[Juraj]

What is funny that I have setup like this:

{ 32"/4K/150perc. } + { 32"/4K/150perc. } + { 24" Vert/2k/200perc. }

And I am sampling from the main monitor to the left one, and these are identical in everything including scaling.
So the fact a third monitor is able to throw this off is pretty interesting :- ).

[maru]

So maybe it happens if anything has other scaling than 100.

[Avarones]

Sorry for taking such a long time to reply.

My GPU is a RTX 2060 and I am using the latest drivers on my PC. I didn't even know there was a Corona Color picker, tried it and it didnt work neither. I tried to use photoshop's color picker and it worked pretty fine.

Edit: Oh I didn't see there's two pages here. Maru, I am currently using one monitor with 150 Scale (the 4k one) and the full hd one I am using with 100% scaling, so might this could be the problem

[maru]

This seems to be a Max issue. We will investigate and will contact Autodesk if needed.

[BVVV]

This seems to be a Max issue. We will investigate and will contact Autodesk if needed.

same issue in
system: windows 10 Pro 2004.19041.572
Software: 3Ds Max 2021 update3
Renderer: Corona 6 hot fix 1
Monitor: 27 4K

[cjwidd]

Also having this issue - never had this issue before with Corona Renderer, but also haven't used the color picker on non-100% scaled display before.

Windows 10
3ds Max 2020
Corona Renderer 9, hotfix 1 (9.1.0.17740)
Monitor 1: 4k, 175% scaling
Monitor 2: 4k, 175% scaling

EDIT: This post is almost three years old, certainly there has been a fix since then!?!