Color differences between Mono Versions

tomvdb · October 11, 2023, 7:47am

Hi All,

I’m fairly new to monogame (but not c#). I’ve been playing around with using MonoGame, but having a funny color issue between two different versions of monogame using the same code from my side (DesktopGL)

On Version: 3.8.0.1641 it looks like this:

and on latest version, it looks like this:

The older version is correct color wise.

Is there something new in the later version that needs to be configured or set? Any more information that is required? My code is basically the example code of ImGuiNet for using ImGui with Monogame.

Thanks,
Tom

KUNGERMOoN · October 11, 2023, 12:02pm

Edit: nevermind, I haven’t noticed that even the entire UI is also darker

Hi, are you sure the bottom one is not the correct one?
The top one looks as if it has been “offset” so the entire left half is black and the right one shows only a half of the image.
Also, can you upload the displayed texture here?
It would be kinda helpful what we are testing

Is seems to me like a difference in in what range the uvs are working (for example, -0.5 to 0.5 or 0 to 1)

Also please tell us which target platform you were/are using

tomvdb · October 11, 2023, 3:49pm

Yeah, its not just the texture. Everything is different shade with no differences of code between the two versions. The texture is created programmatically, but again. its everything that is displayed that is a different shade between the two. I initially thought it was an imgui issue. But you will notice that even the background color that is set from Monogame shows a different color.

I’m currently running on windows, using the desktopgl platform.

The exact code is this example:

github.com

tomvdb/ImGui.NET/blob/master/src/ImGui.NET.SampleProgram.XNA/SampleGame.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
using System.IO;
using Num = System.Numerics;

namespace ImGuiNET.SampleProgram.XNA
{
    /// <summary>
    /// Simple FNA + ImGui example
    /// </summary>
    public class SampleGame : Game
    {
        private GraphicsDeviceManager _graphics;
        private ImGuiRenderer _imGuiRenderer;

        private Texture2D _xnaTexture;
        private IntPtr _imGuiTexture;

        public SampleGame()

This file has been truncated. show original

I realised that running the example included in ImGui.Net shows darker than my own version and the only different between the two are the different versions of Monogame, so I suspected a setting that was different between the two versions.

Squarebananas · October 11, 2023, 4:18pm

Is this related to the GraphicsDeviceManager.PreferMultiSampling issue here?

github.com/MonoGame/MonoGame

3d game white washed and laggy after 3.8.1 upgrade

opened 12:52PM - 20 Aug 22 UTC

devedse

I've just upgraded my 3d maze game to the latest 3.8.1.303 MonoGame but this resulted in some strange issues: First of all all colors are way lighter now, original: ![image](https://user-images.githubusercontent.com/2350015/185747010-71196770-3274-4072-b3d3-1db3d9d28bc2.png) new: ![image](https://user-images.githubusercontent.com/2350015/185747018-830d99ac-8141-4b7d-bce2-0e2dbece9509.png) Secondly my game feels way more stuttery and laggy after the upgrade. Here's the sourcecode: https://github.com/devedse/DeveMazeGeneratorCore/tree/f72e6f36d1fe2220a0be69966cd96d36b01e6aba #### What version of MonoGame does the bug occur on: - MonoGame 3.8.1.303 #### What operating system are you using: - Windows #### What MonoGame platform are you using: - DesktopGL

tomvdb · October 11, 2023, 5:19pm

Looks like it! I turned off PreferMultiSampling and now the colors are good again

Thank you!