3d on Android very slow

fono

Hallo all,

i've tried to export some experiment on android. It runs incredibly slow., like 1 frame every 2 seconds (LOL) on a Nexus 10 with Android 5.1.7 Now i'm not really into mobile device at all, but seems to me really incredible to see this kind of results. On the pc it runs smoothly. No shader used. A bunch of animated characters in a virtual disco (at the end of the background song the object count reach 50. I forget to comment the print statement that i used to test, but not so much stuff. It prints only every 1 sec.

These are the vars declared in the main scene.

extends Spatial

onready var man = preload("res://Armature1.tscn")
onready var woman = preload("res://Armature2.tscn")
onready var glassStruct = preload("res://GlassBall.tscn")
onready var env = preload("res://new_environment.tres")

var m = null
var curr_npc = null
var current_cam_type = 3
var last_cam_type = 3
var area = 15
const BLK = Color( 0, 0, 0, 1 )
var colors = Color(0.0,0.0,0.0,0.0)
var arr_npc = []

Now i would like to ask a general question to everyone who want to share the compiling result on android device:

1 - First of all wich device did you use. 2 - Have you optimized in some way using C++? 3 - Is there some optimization I can use with GdScript? 4- Are there accountable difference using C++ or C #? I use Gdscript for the moment, but i've intention to make this step forward C# / C++. Maybe i will choose C++ because i want to learn to write shaders.

Thanks all.

Megalomaniak

What renderer are you using?

fono

Hi,

GLESS3. I didn't read anything as regard for now sorry for that. You suggest to use GLESS2?

Megalomaniak

Yes, it might be a bit less taxing on mobile devices.

fono

HI @Megalomaniak,

Switching to GLESS2 has improved a little the performance . Maybe i'm overvalueing the Nexus 10, because in the past i've seen games in 3d running quite fast. My pc, is really quite old is an amd 965 black edition with 8 gb of ram and an nvidia 960 2 gb, so quite low spec now but it has no issue at all running this project.

My scene consist of 3 other scene been instantiated in about 220 seconds.At the end 73 objects. Every object get spawned randomly in an area every 3 sec, and you can immagine that when i run the project nothing at all is on the scene, except 4 rotating light that simulate a strobo effect.

Now about the npcs: 2 of them are constantly animated. The 2 type of npc have each 2 additional camera, that get used only if is pressed the switch camera button.

The third has an animation node that does always the same thing, scale and change position y.

As I said there's as well a strobo effect, generated with 4 rotating light been turned on and off. No shader at all. Maybe could be a material with transparent enabled?

Could be that the cameras are too much? For this i can thin of creating and destroy the cameras at runtime. However only 1 is used, there is no viewport or other stuff that use more than 1 camera in the project.

That's all. Now i'm following a tutorial for C++ to see if it improve the performance.

Thanks for your help

wombatstampede

My guess the problem are the lights. Godot can debug on android. When you switch to the remote scene you can en/disable lights and check for the performance difference.

The Nexus 10 came out in 2012 which is quite antique for a mobile device. Also, it has a comparatively high screen resolution (2560 x 1600) which won't make things easier. You could try to render in a lower resolution (for high res devices) and stretch that up (see https://docs.godotengine.org/en/stable/tutorials/viewports/multiple_resolutions.html ).

The other cameras shouldn't be an issue as long as they don't render to another viewport (examples: on-screen top down view map, rear mirror view in a car).

Maybe, discos and strobo effects can be rendered more efficient with a specialized shader.