Initial Commit

Assets/Scripts/ImageEffects/PixelBoy.cs

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+using UnityEngine;
+
+[ExecuteInEditMode, AddComponentMenu("Image Effects/PixelBoy")]
+public class PixelBoy : MonoBehaviour
+{
+	public Camera cam;
+	public int w = 720;
+	private int h;
+
+	protected void Start()
+	{
+		cam = GetComponent<Camera>();
+	}
+
+	private void Update()
+	{
+		var ratio = cam.pixelHeight / (float)cam.pixelWidth;
+		h = Mathf.RoundToInt(w * ratio);
+	}
+
+	private void OnRenderImage(RenderTexture source, RenderTexture destination)
+	{
+		source.filterMode = FilterMode.Point;
+		var buffer = RenderTexture.GetTemporary(w, h, -1);
+		buffer.filterMode = FilterMode.Point;
+		Graphics.Blit(source, buffer);
+		Graphics.Blit(buffer, destination);
+		RenderTexture.ReleaseTemporary(buffer);
+	}
+}

Assets/Scripts/ImageEffects/PixelBoy.cs.meta

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+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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