ARenderTargetContentByRequest.cs

Go to the documentation of this file.

using System;
using Microsoft.Xna.Framework.Graphics;
 
namespace Terraria.GameContent;
 
public abstract class ARenderTargetContentByRequest : INeedRenderTargetContent
{
    protected RenderTarget2D _target;
 
    protected bool _wasPrepared;
 
    private bool _wasRequested;
 
    public bool IsReady => _wasPrepared;
 
    public void Request()
    {
        _wasRequested = true;
    }
 
    public RenderTarget2D GetTarget()
    {
        return _target;
    }
 
    public void PrepareRenderTarget(GraphicsDevice device, SpriteBatch spriteBatch)
    {
        _wasPrepared = false;
        if (_wasRequested)
        {
            _wasRequested = false;
            HandleUseReqest(device, spriteBatch);
        }
    }
 
    protected abstract void HandleUseReqest(GraphicsDevice device, SpriteBatch spriteBatch);
 
    protected void PrepareARenderTarget_AndListenToEvents(ref RenderTarget2D target, GraphicsDevice device, int neededWidth, int neededHeight, RenderTargetUsage usage)
    {
        if (target == null || target.IsDisposed || target.Width != neededWidth || target.Height != neededHeight)
        {
            if (target != null)
            {
                target.ContentLost -= target_ContentLost;
                target.Disposing -= target_Disposing;
            }
            target = new RenderTarget2D(device, neededWidth, neededHeight, mipMap: false, device.PresentationParameters.BackBufferFormat, DepthFormat.None, 0, usage);
            target.ContentLost += target_ContentLost;
            target.Disposing += target_Disposing;
        }
    }
 
    private void target_Disposing(object sender, EventArgs e)
    {
        _wasPrepared = false;
        _target = null;
    }
 
    private void target_ContentLost(object sender, EventArgs e)
    {
        _wasPrepared = false;
    }
 
    public void Reset()
    {
        _wasPrepared = false;
        _wasRequested = false;
        _target = null;
    }
 
    protected void PrepareARenderTarget_WithoutListeningToEvents(ref RenderTarget2D target, GraphicsDevice device, int neededWidth, int neededHeight, RenderTargetUsage usage)
    {
        if (target == null || target.IsDisposed || target.Width != neededWidth || target.Height != neededHeight)
        {
            target = new RenderTarget2D(device, neededWidth, neededHeight, mipMap: false, device.PresentationParameters.BackBufferFormat, DepthFormat.None, 0, usage);
        }
    }
}