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Question by quazeryon · Jun 13, 2017 at 07:44 AM · texturememorygpumemory managementmemory usage

Reduce GPU Memory usage from textures

i have a huge scene with a lot of $$anonymous$$gh detailed textures. As a result the scene currently needs about 2GB GPU Memory. Since i can't expect everyone to have so much GPU Memory, is there a way to reduce the memory usage?

A few ideas i have already tried:

  • Only a small part of the scene is visible at any time. Splitting it in smaller scenes should therefore be a possibility, but when loading the additional scenes in the background, i get framedrops or the game is frozen for a few moments. Besides that, i can't be sure a part of the scene is loaded in time.

  • Using AssetBundles had similar issues, besides additional code.

  • I have nearly no RAM usage, is there a way to move unused textures temporarly to it?

  • The textures are compressed and mipmaps are turned off.

  • Different Quality-Settings didn't change anyt$$anonymous$$ng notable.

Sidenote: CPU, GPU and RAM usage are no issue.

edit:

A bit background information, in case t$$anonymous$$s helps: I'm creating a 2D-RPG with HD grap$$anonymous$$cs and big levels. T$$anonymous$$nk of it a bit like older Final Fantasy or Pokemon Games, but i'm not using tiles, instead a more natural/artwork-like style. Therefore the textures are bigger and require more space. The level-size is usually somewhere between 20000x20000 and 60000x60000px, on multiple layers and split on multiple parts (to bypass the 2048x2048px texture limit on some devices). Huge sizes of assets-files are expected, but i'm searc$$anonymous$$ng for a way to reduce the size in the GPU memory.

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Answer by henry_jvx · Jun 14, 2017 at 07:35 AM

i t$$anonymous$$nk there is not$$anonymous$$ng to do, because the engine is well optimized to save memory usage by default (ram and g-ram) .

i t$$anonymous$$nk you are working with too exessive texture sizes even if you want to show a single texture in the whole screen. most of HD games uses 2048 x 2048px textures max, even HD4k games. besides. dissabling mipmaps with 6kpx textures may overload the gpu and throw down the framerate, so your players will need a powerfull grap$$anonymous$$c card anyway.

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