koobas.hobune.stream
How to use canvas scaler?
Hello everyone, I am having trouble understanding how the Canvas Scaler component works. It seems to me that it takes a reference resolution and compares that to the device's resolution. So by what I understand, if the device resolution is divisible by the reference resolution, it scales correctly. So I assume that if the X field is set to 1 and the Match completely on Width (which I assume is X) then, because whatever X resolution is divisible by 1 (our reference X), it would, well, scale correctly.
But instead, everything gets huge, so would anyone mind explaining what is happening? Thanks.
There's an explanation for every single mode you can choose, did you read it?
https://docs.unity3d.com/$$anonymous$$anual/script-CanvasScaler.html
Are you using "Scale With Screen Size" mode? In that case, you fill in the resolution of the screen you designed your UI for. For example, if your UI button's size was designed for a canvas size of 1920x1080, then you fill in X: 1920, Y: 1080 (16:9).
On the match slider, if you match width (0), and your game is played on a screen with resolution of 1280x1024 (4:3, or 12:9), since this screen size has lower width:height ratio than your reference resolution, the canvas's height will expand, its width will stay the same.
EDIT: @pigaroos Here's an example:
My background sprite has the resolution of 1424x640 (designed to fit 20:9 ratio screen)
My Canvas Scaler's setting: 
Thank you for answering! So I will have to detect what device is being used and adjust the scaler accordingly for every device on my target platform?
no, you don't have to detect device's resolution, you just choose one resolution and set the value, the Canvas Scaler will automatically adjust it on every device.
If you don't know which resolution to choose, just use the resolution of your current device
Thank you for going deeper into detail here. I'll test things tomorrow and see what happens.
