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You are welcome and thanks for taking your time in testing it. As you know, optimizing is a trade game in which you can not win everything and you need to make compromises and there's no "right" or perfect solution. I tested your solution over mine and disabled gaussian (the upscaling from 20% already make edges unsharp due it's antialising) and reduced glow to 2. The result combined with my reduction of resolution is amazing: I hit 60 fps (not constant but most of the time) with shaders on!

After many experiments I made up a decision: To keep options simple and high framerate and resolution the following shaders are disabled:

- Gaussian blur and glow

This is the only way I can achieve 60fps with shaders on at full resolution.

Don't do the same if you have other preferences, it may not look as beautiful but I think this kind of game should prioritize framerate to graphics when the hardware can not have both.

Feel free to take may parameters if you like them! and thanks for making this game wonderful on phones!

plinkr52 days ago

Hey!

It doesn't look as nice without the glow shader, but at least it runs very fast.

I need to dig deeper to see if there's any OpenGL ES shader that can achieve a soft light effect efficiently. Maybe combining it with scanlines and CRT effects in a single shader could make it look closer to the desktop version.

If I find a good optimization, I'll let you know, your port might benefit from it too. Likewise, if you discover anything useful for implementing an optimized glow (soft light) shader, please share it.

Also, with the version I uploaded today, resolution handling on mobile devices is much better now, taking High DPI into account, that might be useful for you as well.

Cheers.

itchware52 days ago (3 edits) (+1)

Thanks. I commented it: IS_MOBILE = love.system.getOS() == "Android" or love.system.getOS() == "iOS". As long as I know you can not retrieve with getOs if a system is Sailfish, Aurora or Postmarket Os, it always return "linux". I hope it helps.

https://video.gamerstavern.online/w/7NT8ZXQdQAn9sjDgKxfjoW

This is my definitive version, I gave up on too much glow and added a performant nebula instead in which I worked hard on optimizing for phones. The result speaks for itself: 60fps most of the time and amazing graphics! Feel free to add whatever you like of my work if you like it, if you prefer something else that's fine!

plinkr52 days ago

I'll definitely try the nebula shader for the parallax background, I liked that effect a lot!

Regarding detecting mobile, you could try:

IS_MOBILE = love.system.getOS() == "Linux"
  and (require("ffi").arch == "arm" or require("ffi").arch == "arm64")

`jit.arch` (or `ffi.arch`) returns the architecture: https://luajit.org/ext_jit.html#jit_arch

You can assume Linux on ARM likely indicates a mobile platform, and also check for OpenGL ES to be safer:

local gl_vendor, gl_version = love.graphics.getRendererInfo()
if gl_version then
   is_es = string.find(gl_version:lower(), "es", 1, true) ~= nil
end
IS_MOBILE = love.system.getOS() == "Linux" and (require("ffi").arch == "arm" or require("ffi").arch == "arm64")
    and is_es

Have a nice one!

itch.io

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