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Author Topic: issue with EVE Asset Builder 1.2.0  (Read 241 times)

Rudolph

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issue with EVE Asset Builder 1.2.0
« on: January 20, 2020, 05:33:17 PM »

Edit: I am not sure where my head was yesterday evening.

Converting images with the EVE Asset Builder v1.2.0 to ARGB1555 with compression results in rather large files and I suspect this is due to dithering beeing turned on by default.

I attached an archive with two button images that I converted using the image convert tool and EAB.
The result from EAB is very similar to what "img_cvt.exe" produces when not switching dithering off.
And the result with dithering off is a lot smaller.

I am using .png images for GUI elements and logos in order to not get compression related noise
in my images, this is kind of pointless when the converter deliberately adds noise.

Can we please have a checkbox in EAB to disable the dithering?
Preferably so that dithering is off by default, please.

Does the converter use dithering for BT81x ASTC images as well? If so - why???
« Last Edit: January 21, 2020, 05:26:33 PM by Rudolph »
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BRT Community

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Re: issue with EVE Asset Builder 1.2.0
« Reply #1 on: January 22, 2020, 02:45:18 PM »

Hi Rudolph,
Thanks for highlighting this, we'll check with the author of the EAB application and will post an update soon,
Best Regards,
BRT Community
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pauljiao

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Re: issue with EVE Asset Builder 1.2.0
« Reply #2 on: February 11, 2020, 02:14:55 AM »

It seems the "dithering" feature in EAB does not work well on all the cases.
I suggest to disable the "dithering" by calling command line with option "-d" such as:

".\eab_tools.exe  image_convert -i inputFile.png -f ARGB1555 -d "

".\eab_tools.exe" is located at installation path of EAB.
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Rudolph

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Re: issue with EVE Asset Builder 1.2.0
« Reply #3 on: February 11, 2020, 08:12:18 PM »

Well, as I wrote, I already avoid dithering by converting my images with the image convert tool:
https://brtchip.com/wp-content/uploads/Utilities/Image%20Convert%20Tool%20V0.9.1.zip

It would be nice though to use the EVE Asset Builder instead as it is supposed to be used.

I just tried the "EVE Image Conversion Utility 0.9.5" which is included in "eab_tools.exe".
And while it shows the same effect that the dithering hinders it's zlib compression for legacy formats,
converting to at least ASTC 8x8 is not effected by the dithering option.

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