Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: archimen on 2021-01-15, 13:02:21

Title: Alpha channel as black
Post by: archimen on 2021-01-15, 13:02:21

Hi,
Report
Saving a render to disk (png,tif,tga) saving Alpha channel as black when Sharpening/Blurring is enabled,

Title: Re: Alpha channel as black
Post by: Beanzvision on 2021-01-15, 13:36:47

Hi, can you go into more detail and provide some examples or a test scene?

Title: Re: Alpha channel as black
Post by: archimen on 2021-01-15, 17:45:29

Hello,
oh please, here's the proof.
Full-speed non-debug version
Build timestamp: Dec 31 2020 19:21:11
Version: 7.0 daily Dec 31 2020
Cinema version: R23.110 Cinema 4D
Plugin status: Plugin successfully loaded

I do not send scenes because these are the simplest settings like in the movie.
On the corona forum in 3ds max, I read that you removed this bug in the last dailybuild.

Title: Re: Alpha channel as black
Post by: Beanzvision on 2021-01-18, 10:45:02

Hi, unfortunately, I cannot reproduce this. It is working as expected. None the less, I have reported it and we will look into it. Can you tell me more about your PC and what version of Windows you are running?

For staff use: (Internal ID=625065320)

Title: Re: Alpha channel as black
Post by: archimen on 2021-01-18, 11:09:19

Hi,
Spec.
Windows 10 Home
20H2
Comp. 19042.746
Windows Feature Experience Pack 120.2212.551.0,
PC spec.
cpu-AMD 1950 x threadripper
motherboard- MSI x399 gaming pro carbon ac
ram- g.skill flarex 3200 MHz, 64 GB
disc: SSD Samsung evo 970.

Hello,
The same is happening on my computer at work, I will record a movie in my free time.
I wish you fruitful work to find it.
greetings

Title: Re: Alpha channel as black
Post by: Beanzvision on 2021-01-18, 13:19:37

Hi, Thanks for getting back to me. Additional videos are always welcome! I look forward to hearing from you.

Title: Re: Alpha channel as black
Post by: archimen on 2021-01-22, 10:14:13

Hello,
Promised video from the computer from work.
Same error.
PC SPEC.
Intel(R) Core(TM) i5-4460  CPU @ 3.20GHz   3.20 GHz
RAM   16,0 GB 1600 MHz
ASRock Z97 Anniversary
GTX 750Ti

Windows 10 Home
20H2
Comp. 9042.746
Windows Feature Experience Pack 120.2212.551.0

I will add that this error on both computers does not occur on the earlier build

Title: Re: Alpha channel as black
Post by: TomG on 2021-01-22, 15:11:39

I tested this

- Run IR
- Stop IR, click Save in the VFB (I couldn't tell in the video what you were using to save the file)
- Select PNG, 8 bit, with Alpha
- Open in Photoshop, the PNG has transparency (I can't tell what you are using to open the PNG in the video, so not sure what you use respects the alpha channel or not)

Title: Re: Alpha channel as black
Post by: archimen on 2021-01-23, 11:48:40

Hi,
Daily Build 2021-01-22, I don't know how, but solves the problem; P
Thanks,