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Any good resources for optimization strategies? (down to 30 fps, all in "rendering")

Discussion in '2D' started by Valynna, Mar 10, 2022.

  1. Valynna

    Valynna

    Joined:
    Apr 1, 2021
    Posts:
    39
    So I have this game I'm trying to optimize, but right now, with just this on the screen, it's freaking out.
    I have a bunch of hexagonal cells made up of 6 walls, with 3 line renderers on each (the inside, the white outline, and the black outline). Inside the cell, I have a bunch of squiggles on the ground, and some random plants scattered about. The squiggles and plants are both just sprites.

    Everything ran perfectly at 60 fps when I had a grid 1/4 this size (15x11) -- but switching to a larger grid at (30x21) I'm below 30 fps. I have a 3070 in my computer, and if mine can't run it, there will be problems elsewhere.

    As I start looking through the profiler, it's clear that I don't really understand what's happening, or what I might do to improve the situation.

    Can anyone give me a good idea of where to start? I know a little bit about the physics optimizations, but the rendering stuff is a mystery to me.

    upload_2022-3-10_8-9-30.png
    upload_2022-3-10_8-9-48.png
    upload_2022-3-10_8-9-14.png
     
    Valynna, Mar 10, 2022
    #1

  2. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,533
    I'm not a rendering person but if you're going to show some profiler output for timing, by far the most important thing to actually show are the times which you've unfortunately cut-off in the image above.

    Those batch numbers look scary though. Looks like nothing is being batched.

    Maybe a tile-map might've been a better option here, not sure.
     
    MelvMay, Mar 10, 2022
    #2

  3. Valynna

    Valynna

    Joined:
    Apr 1, 2021
    Posts:
    39
    -- Ah you're right! It seems like the times are like 26.xx ms, 19.xx ms, 19.xx ms 19.xx ms, 14.xx ms.

    If I can get them down below the double digits it might work! xD

    ... It's interesting. Static batching was the first thing I tried. I set all the objects which don't move in the scene (all of them right now), and made sure isStatic was turned on. I also went to make sure that static batching was turned on in the edit - project settings.

    I saw zero improvement / difference.
     
    Valynna, Mar 10, 2022
    #3

  4. rarac

    rarac

    Joined:
    Feb 14, 2021
    Posts:
    570
    put stuff on sprite atlas, use same material, same shader, no lighting
     
    rarac, Mar 10, 2022
    #4

  5. DragonCoder

    DragonCoder

    Joined:
    Jul 3, 2015
    Posts:
    1,467
    Fear your 30x21x3 Linerenderers are the issues (or is it actually 3 per wall, not per hexagon?!). That's just a lot and I bet it's not actually the GPU bottlenecking but the CPU. Try setting resolution to 720p - does that improve the FPS significantly?
    If not (vs 1080p), the CPU is the limit.

    Unfortunately this is tricky since I assume you want to keep this randomization of your cells.

    An idea comes to mind to eliminate the linerenderers:
    Generate every tile shape onto a render texture at game load and then turn that render texture into a sprite.
    To save memory and improve batching, you could limit the number of different cell shapes to 100 or so. Nobody will notice that it's not all 100% randomization.
     
    DragonCoder, Mar 10, 2022
    #5