Problems with .png images when resizing

It's due to how you rendered that, behind the fully transparent pixels, there's this green, you can either change that color to black or use a different type of alpha when rendering.

If you disable transparency, you'll see that the empty parts are actually green.

Quote from CommanderSilva

Hello!

I'm making sprites for my game. These sprites are actually renders made in Cinema 4D in .png format.
Well, the problem is: when I import the image in Clickteam, I have no problems. But, when I resize the image, it appears with green pixels surrounding it.

Because of that, the sprites looks "horrible" in-game.
Anyone knows what is causing this?

Naitor is right, it's probably due to how the image itself was rendered in Cinema 4D. Could you post an image of your render settings (things like the "Save", "Options", and "Anti-Aliasing" sections)? Also, which renderer are you using and was the original image rendered with a transparent background? The only reason I could think that this would happen was if the alpha channel was configured incorrectly or if the image was rendered with a green-colored background which was later keyed out (either in an image editor or when importing into Fusion).

PNGs always use straight alpha. Fusion, in "Direct3D 11" display mode, uses pre-multiplied alpha by default. I'll bet if you untick that box, it would also solve all your problems (pre-multiplied alpha is a pain in the ass).

But, heard from Yves that Premultiplied mode was actually done to fix a lot of issues with effects, specially related to layers...
It's the only mode that will not mess up the colors and alpha when effects are applied to layers.

Here's what I'm talking about:

Please login to see this picture.

I totally get the logic behind it (there's an excellent explanation here: Please login to see this link. ), but it's still a pain in the ass.

I use GIMP ( FREE SOFTWARE ) to make ALPHA Graphics out of any other Graphic programs I use to make the Graphics.
As you mentioned, some programs add numerous Alpha Layers and when you resize them in fusion those GREEN layers become visible.
Typically I just Use GIMP to make all graphics as there is no issue when importing the Graphics to Fusion.
However, you can also use GIMP to (FLATTEN) merge all layers into one. Which will show the Green layer.
You can then Remove the GREEN Layer with GIMP as well by making it the Standard ALPHA of the Image.
BE DEFAULT, GIMP USES BLACK
So when you flatten your image you will see the green behind it and you can then change the Alpha Color Selection to the Green.

Below is a little Sample.
One image made with CINEMA 4D Software.
One image Fixed with Gimp.
Both running in Fusion!

Please login to see this media element.

Also, something else to consider when resizing is that when it zooms in. You will see the Bits.

At the end of each race you will see a GIMP made Image, Starting at normal. Then Zoomed all the way in and Faded out at the same time.

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Quote from VBEinc

I use GIMP ( FREE SOFTWARE ) to make ALPHA Graphics out of any other Graphic programs I use to make the Graphics.
As you mentioned, some programs add numerous Alpha Layers and when you resize them in fusion those GREEN layers become visible.
Typically I just Use GIMP to make all graphics as there is no issue when importing the Graphics to Fusion.
However, you can also use GIMP to (FLATTEN) merge all layers into one. Which will show the Green layer.
You can then Remove the GREEN Layer with GIMP as well by making it the Standard ALPHA of the Image.
BE DEFAULT, GIMP USES BLACK
So when you flatten your image you will see the green behind it and you can then change the Alpha Color Selection to the Green.

Below is a little Sample.
One image made with CINEMA 4D Software.
One image Fixed with Gimp.
Both running in Fusion!

Please login to see this media element.

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Marv

Quote from nivram

Video unavailable.

Marv

That's Odd. I can see it here.