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added a way to using() a render target while applying the previous ones easily

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Ellpeck 2020-04-02 17:47:11 +02:00
parent 80f36c78bd
commit 5a8e74c5f3
1 changed files with 26 additions and 0 deletions
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26
MLEM/Extensions/GraphicsExtensions.cs
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@ -1,4 +1,5 @@
using System;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
@ -38,5 +39,30 @@ namespace MLEM.Extensions {
manager.ApplyChanges();
}
public static TargetContext WithRenderTarget(this GraphicsDevice device, RenderTarget2D target) {
return new TargetContext(device, target);
}
public struct TargetContext : IDisposable {
private readonly GraphicsDevice device;
private readonly RenderTargetBinding[] lastTargets;
public TargetContext(GraphicsDevice device, RenderTarget2D target) {
this.device = device;
this.lastTargets = device.RenderTargetCount <= 0 ? null : device.GetRenderTargets();
device.SetRenderTarget(target);
}
public void Dispose() {
if (this.lastTargets != null) {
this.device.SetRenderTargets(this.lastTargets);
} else {
this.device.SetRenderTarget(null);
}
}
}
}
}