Color mask on a picture severely reduces its resolution!

Rhino Rhino for Windows
1

I have a number of 10k x 6.5k pictures in a file, which granted is quite large but they’re high resolution scans of blueprints. They look nice using the regular object transparency slider, however using the color mask with the tolerance slider reduces their resolution to a fraction, making them a pixellated, unusable mess. Why is that?

Also, in Rhino 8 it took me a while to figure out why I couldn’t use the transparency slider:

image
image240×645 22.5 KB

Turns out, I had to increase the width of the panel first, which is rather poor design:

image

2

In what display mode would that be?

3

Standard Shaded view.

I took them into Affinity Photo and made proper transparent PNGs from them instead, and that got picked up automatically by Rhino at full resolution, looking much better in the progress. I guess the transparency slider is a crude fallback (with some built-in resolution cap).

Btw, this is the second McNeel employee who has replied to me today. Don’t you guys take weekends? :slightly_smiling_face:

4

Wait, it is weekend?

Anyway, as long as the color mask doesn’t make the image look pixalated in Raytraced I guess I’m happy (:

2 Likes
5

Weekend…? What’s that?

6

Still happening to pngs in Rhino 8.4.24, both color mask ant the grayscale option.
On jpgs the color mask works alright.

7

Can you attach a file where this is a problem with?

8

Any of the high resolution images on this page…

:vulcan_salute:

9

:vulcan_salute:

I see the issue. It is pretty much any viewport mode except Raytraced.

Logging a bug report.

edit: logged as RH-80582 Bitmap texture with color mask heavily pixelized

3 Likes