png alpha issue

texture issue

thrimanakatha

User Posts: 60
Feb 23, 2022 03:18

Hello,
I am facing problem with png images with transparency. See the screen shot

PNG file doesn't use the alpha correctly. Cinema 4d standard render has the same issue with transparent png file, but once I connect the alpha with material alpha and turn on image alpha it will be good. In centileo i couldn't solve this issue. Connecting the png alpha to the material alpha is not working.

In the screenshot Left square one is png and the right one is tiff, both have the same circle with alpha.

Kirgman

Administrator Posts: 950
Feb 23, 2022 08:06

Hello! Just use the "Alpha" output port of Bitmap to connect with Alpha channel. On your screen you use the "Result" output port which is just RGB without Alpha.

CentiLeo Chat: https://t.me/centileochat

thrimanakatha

User Posts: 60
Feb 23, 2022 09:28

Okay, I connected the bitmap alpha to material alpha, still same.

ssjenforcer

User Posts: 217
Feb 23, 2022 11:13

Quote
thrimanakatha wrote: Okay, I connected the bitmap alpha to material alpha, still same.

did you remember to check Alpha checkbox to enable it?
look at your material editor on the bottom right and see if Alpha is checked (enabled).

I started making this mistake a lot at first when learning to use nodes.
I would always forget to enable bump for several minutes trying to see results.

Edited: ssjenforcer - Feb 23, 2022 13:24

Kirgman

Administrator Posts: 950
Feb 23, 2022 12:09

Quote
thrimanakatha wrote: Okay, I connected the bitmap alpha to material alpha, still same.

Have you enabled the Alpha channel in the list of channels of material? It's off by default. There are toggles for all layers in CentiLeo Material

CentiLeo Chat: https://t.me/centileochat

thrimanakatha

User Posts: 60
Feb 25, 2022 02:41

Quote

Kirgman wrote:

Quote
thrimanakatha wrote: Okay, I connected the bitmap alpha to material alpha, still same.

Have you enabled the Alpha channel in the list of channels of material? It's off by default. There are toggles for all layers in CentiLeo Material

Quote

ssjenforcer wrote:

Quote
thrimanakatha wrote: Okay, I connected the bitmap alpha to material alpha, still same.

Thanks, I forgot the alpha toggle for Centileo. Recently I was working in Blender and used the same workflow.

Kirgman

Administrator Posts: 950
Feb 25, 2022 07:19

Quote
thrimanakatha wrote: Thanks, I forgot the alpha toggle for Centileo. Recently I was working in Blender and used the same workflow.

It's like a default way of doing things in C4D itself

So there are some material channel settings and there is a toggle to on/off it with a single click.

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