Add RetroSuite-3D shader components

Assets/Scripts/ImageEffects/RetroPixelMax.cs

@@ -0,0 +1,53 @@
+/// <summary>
+/// RetroSuite-3D by oxysoft
+/// https://github.com/oxysoft/RetroSuite3D
+/// </summary>
+
+using UnityEngine;
+
+[ExecuteInEditMode]
+[RequireComponent(typeof(Camera))]
+[AddComponentMenu("Image Effects/Retro Pixel Max")]
+public class RetroPixelMax : MonoBehaviour
+{
+    Material mMaterial;
+    Shader shader;
+
+    [Header("Colors")]
+    public Color[] colors;
+
+    Material Material
+    {
+        get
+        {
+            if (mMaterial == null)
+            {
+                shader = Shader.Find("Oxysoft/RetroPixelMax");
+                mMaterial = new Material(shader) { hideFlags = HideFlags.DontSave };
+            }
+
+            return mMaterial;
+        }
+    }
+
+    public void OnRenderImage(RenderTexture src, RenderTexture dest)
+    {
+        if (Material && colors.Length > 0)
+        {
+            Material.SetInt("_ColorCount", colors.Length);
+            Material.SetColorArray("_Colors", colors);
+
+            Graphics.Blit(src, dest, Material);
+        }
+        else
+        {
+            Graphics.Blit(src, dest);
+        }
+    }
+
+    void OnDisable()
+    {
+        if (mMaterial)
+            DestroyImmediate(mMaterial);
+    }
+}