Add RetroSuite-3D shader components

Assets/Scripts/ImageEffects/RetroSize.cs

@@ -0,0 +1,29 @@
+/// <summary>
+/// RetroSuite-3D by oxysoft
+/// https://github.com/oxysoft/RetroSuite3D
+/// </summary>
+
+using UnityEngine;
+
+[ExecuteInEditMode]
+[RequireComponent(typeof(Camera))]
+[AddComponentMenu("Image Effects/Retro Size")]
+public class RetroSize : MonoBehaviour
+{
+    [Header("Resolution")]
+    public int horizontalResolution = 160;
+    public int verticalResolution = 144;
+
+    public void OnRenderImage(RenderTexture src, RenderTexture dest)
+    {
+        horizontalResolution = Mathf.Clamp(horizontalResolution, 1, 2048);
+        verticalResolution = Mathf.Clamp(verticalResolution, 1, 2048);
+
+        var scaled = RenderTexture.GetTemporary(horizontalResolution, verticalResolution);
+        scaled.filterMode = FilterMode.Point;
+
+        Graphics.Blit(src, scaled);
+        Graphics.Blit(scaled, dest);
+        RenderTexture.ReleaseTemporary(scaled);
+    }
+}