HiDPI mode gets confused when 3x picture in the image set

Targets macOS
1

43655 - HiDPI mode gets confused when 3x picture in the image set

OS: OS X 10.11.5

Xojo: Xojo 2016r1

Steps: When all three pictures 1x 2x and 3x are present in an image set, in a canvas backdrop or ImageWell the app on a Retina screen displays 2x in lieu of 1X and 3x in lieu of 2x.

Run the attached project to see this.

<https://xojo.com/issue/43655>

It may not be urgent, since we do not have yet 3x Macs, but it would be nice to plan for the future.

2

I found that if I always set the 1x to 72ppi, the 2x to 144ppi and the 3x to 216ppi, things seem to work. Not sure if you tried that.

3

Nope. It does not change a thing. I am not surprised, though. As far as I understand it, only the absolute number of pixels counts.

4

Strange. I’m trying now and it seems works to here.
I’ve changed FolderIconFontsx3 to 216dpi.
Did you drag it in the picture set again. :slight_smile:

Non retina:

Retina:

5

Well, here I have an incorrect display in both modes, even after dragging the new pictures in. Also, the three pictures set does not scale correctly in the canvas backdrop.

Non retina

Retina

6

That’s so strange. Maybe you’re using a Beta and something has changed? I’m on plain 2016R1.
Just in case, here’s the png.
The only thing I did was opening it in Preview, Tools->AdjustSize->Change Resolution to 216. Then drag it back at the 3x position in the project.

edit: and the project:

7

I tried in 2016R1. I had changed the dpi in Photoshop.

Now I used the picture you had prepared, and it works !

I know what happened : the 3x picture I used was 72x72 instead of 48x48.