Silk.NET•3y ago

GPU compressed textures have a load of uses

AAqua far as i know gpus use whatever it is you give them it's the reason why you tell...

Redhacker2•1/8/23, 12:51 PM

That doesn't mean they Don't transform it into their own internal representation

Redhacker2•1/8/23, 12:52 PM

Trying to reduce space utilized transparently

AAqua GPU compressed textures have a load of uses

Redhacker2•1/8/23, 12:53 PM

I'm not disagreeing, in fact, even for realistic open worlds, i think is still probably a good usecase

Redhacker2•1/8/23, 12:54 PM

They don't look that bad compared to the originals

Redhacker2•1/8/23, 12:54 PM

Of course again, I would prefer to parse everything into RGBA on CPU anyway so I don't get anything from GPU compressed textures

Redhacker2•1/8/23, 12:55 PM

But that's me personally

AquaOP•1/8/23, 12:55 PM

based on the fact that my game is a large open world I do have a bias towards gpu compressed textures

AquaOP•1/8/23, 12:55 PM

also from what i've seen gpu compressed textures are a bit faster as well since there's less data, both when it comes to drawing the texture itself and also transferring from cpu to vram

Pio•1/8/23, 1:26 PM

I need some help with assimp, I'm trying to limit bones used by meshes to 6 so I did this:

var ps = _assimp.CreatePropertyStore();
_assimp.SetImportPropertyInteger(ps, "PP_SBBC_MAX_BONES", 6);
var scene = _assimp.ImportFile(path, (uint)Assimp.PostProcessSteps.SplitByBoneCount);

var ps = _assimp.CreatePropertyStore();
_assimp.SetImportPropertyInteger(ps, "PP_SBBC_MAX_BONES", 6);
var scene = _assimp.ImportFile(path, (uint)Assimp.PostProcessSteps.SplitByBoneCount);

however meshes still have more than 6 bones, am I applying the property the wrong way?

AAqua also from what i've seen gpu compressed textures are a bit faster as well since ...

Redhacker2•1/8/23, 1:32 PM

not suprising

Redhacker2•1/8/23, 1:32 PM

idk, I just like being able to uncompress the texture on the CPU and send it in RGBA to the GPU

Kai•1/8/23, 1:40 PM

I mean sure, but you have worse performance for no reason

AquaOP•1/8/23, 1:40 PM

Redhacker2•1/8/23, 1:41 PM

again, I just like doing it

KKai I mean sure, but you have worse performance for no reason

Redhacker2•1/8/23, 1:41 PM

that's fine, performance is still nowhere near terrible even still

Redhacker2•1/8/23, 1:41 PM

and how many times are you loading textures from disk repeatedly

AquaOP•1/8/23, 1:42 PM

in an open world game you can do it rather frequently

Redhacker2•1/8/23, 1:42 PM

and most of the time even removing them from GPU

AquaOP•1/8/23, 1:42 PM

also the performance is the gpu performance

AquaOP•1/8/23, 1:42 PM

not the loading performance

AAqua in an open world game you can do it rather frequently

Redhacker2•1/8/23, 1:42 PM

depends on the Open world game

Redhacker2•1/8/23, 1:42 PM

ultimately for me doing it is not that big an issue.

RRedhacker2 and how many times are you loading textures from disk repeatedly

Kai•1/8/23, 1:43 PM

Your texture is also using more memory with no gain in quality. Data that's been uncompressed from a lossy format inherently stores useless information.
And that then eats into memory throughput & usage for no reason

KKai Your texture is also using more memory with no gain in quality. Data that's been...

Redhacker2•1/8/23, 1:43 PM

good thing I don't use lossy formats

RRedhacker2 You could go full for lack of a more professional term "balls to the walls" and ...

Hanprogramer•1/8/23, 1:44 PM

This is what I've been thinking of doing. Since that way it's easier to pack and I can automate most parts since i use a custom editor GUI app thingy. My game engine is 2d only for now and focuses on 2d. So i think i could do it in raw bytes yeah just for faster startup time (on final builds) but when in editor just load the raw PNGs or JPEGs or etc.

Hanprogramer•1/8/23, 1:45 PM

also most of my textures will be auto packed to single atlas or few atlases by the editor

KKai Your texture is also using more memory with no gain in quality. Data that's been...

Redhacker2•1/8/23, 1:45 PM

after all, if I am going to send an image in RGBA to the GPU, why would I create lossy versions of textures to store on disk

AquaOP•1/8/23, 1:46 PM

because then you can upload it to the gpu in a compressed format so it uses less vram and gives a (slight) performance boost?

AAqua because then you can upload it to the gpu in a compressed format so it uses less...

Redhacker2•1/8/23, 1:46 PM

not if I am going to uncompress it before loading it on GPU... like I previously stated would prefer to do...

AquaOP•1/8/23, 1:46 PM

why would you do that though

AAqua is it decompressable on the gpu though? that's the *real* advantage of DDS and K...

TechPizza•1/8/23, 1:47 PM

factorio compresses its texture atlases :)

AquaOP•1/8/23, 1:47 PM

there is literally 0 point in doing that

TTechPizza factorio compresses its texture atlases :)

AquaOP•1/8/23, 1:47 PM

yea ive not seen compressed textures for 2D games but im assuming it can look okay

AAqua *why would you do that though*

Redhacker2•1/8/23, 1:47 PM

because I prefer having the textures in a format easily read on CPU and easily authored by myself

AquaOP•1/8/23, 1:47 PM

bit like a jpeg

AquaOP•1/8/23, 1:48 PM

you load in textures and make changes to them directly before uploading them to the gpu?

AAqua you load in textures and make changes to them directly before uploading them to ...

Redhacker2•1/8/23, 1:49 PM

Ideally yes. I would like to be able to stamp things on top of various textures

Redhacker2•1/8/23, 1:49 PM

or at runtime generate textures to use.

Redhacker2•1/8/23, 1:50 PM

I would also not like to have to deal with a dozen variously compressed texture formats

Redhacker2•1/8/23, 1:51 PM

and authoring said textures.

TechPizza•1/8/23, 1:51 PM

you are argumenting as if one is not allowed to compress textures at runtime

TTechPizza you are argumenting as if one is not allowed to compress textures at runtime 🙃

Redhacker2•1/8/23, 1:52 PM

I am arguing as though I don't want to deal with the overhead or dealing with compression/decompressing the textures at runtime

TechPizza•1/8/23, 1:52 PM

and the shaders get color values in the end regardless

Redhacker2•1/8/23, 1:52 PM

both in code or on my brain

Redhacker2•1/8/23, 1:53 PM

and it ain't that slow.

AquaOP•1/8/23, 1:54 PM

just wait until you are using many 4k textures in one scene and then you will be thankful that gpu compressed textures exist

AAqua just wait until you are using many 4k textures in one scene and then you will be...

Redhacker2•1/8/23, 1:54 PM

I have no plans on doing so

Redhacker2•1/8/23, 1:55 PM

in most cases 4k textures are excessive, and also, that is why mipmapping exists

Kai•1/8/23, 1:55 PM

Even with lossless it can still be compressed. Then I suppose you're not storing redundant information, but it's still inefficient for no reason

GPU compressed textures have a load of uses

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