How to turn off texture compression?

Unity Engine
1

Hi!

How to turn off the texture compression please?

All the maps in 2D that I import from Tiled are crap. ^^’

Thanks for reply.

-David

How textures are compressed in the build? Is there a way to disable compression?
Unity makes my pixel backgrounds bleed
2

Select a texture and switch the Compression setting in the Texture Importer Inspector to None.

1 Like
3

There is no none option. Only Fast, Normal and Best.

4

You must be looking at “Compressor Quality” in a platform override then.

In the “Default” Settings tab, it’s called “Compression”:
4952432--481388--upload_2019-9-11_7-20-5.png

In platform override tabs, such as “Android”, you want to look for “Format” and change it to “RGBA 32 Bit” or “RGB 24 Bit” to get an uncompressed texture:
4952432--481391--upload_2019-9-11_7-21-4.png

5

Thanks!

So the highest possible detail possible on Android is using the RGBA 32 Bit or RGB 24 Bit?
How about “RGB Compressed PVRTC 4 bits”? It is considered high quality. But everything compressed will always have a lower quality than RGB 24 Bit (true color)?
What’s the next best option?

6

Compressed textures (ETC, PVRTC, DXT, etc) normally yield better performance and have a lower memory footprint.

Compression often introduces artifacts, which highly depends on the texture. Some compressed textures might look identical to their uncompressed counter-parts and some might look horrible. You have to trial&error and find what’s acceptable for your project. Gradients often turn out really bad when compressed.

Using uncompressed textures can yield to a higher memory footprint and slower rendering, due to increased bandwidth requirements. You have to trial&error and profile your project to fine out if that’s fine for you.

There is not a single “use this it’s best” answer. It mostly depends on project requirements, art-style, etc…

7

I see. But why is an uncompressed or even a compressed image file larger than the source image? If my source image is 13Mb, why does the uncompressed 2D image or a Cubemap of that same image result in a larger file size? Even if the final resolution is lower than the original.

8

For example, a PNG image uses a different compression algorithm than GPUs require. Look up block compression, PVRTC, ETC, ASTC, DXT and so on if you want to find more about GPU compatible texture formats.

9

I’m working on Android, and I personally like to change the texture’s levels in Photoshop to use the maximum available colors in a 8 bit compression format, then I use shader operations to revert back the texture to its original colors

10

Hey friends. 7 years later, how do I change this compression parameter in the script?

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