摄像机区域的架构改动

Assets/Sprite Shaders Ultimate/Scripts/ImageSSU.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace SpriteShadersUltimate
+{
+    public class ImageSSU : InstancerSSU
+    {
+        //Updates material when RectTransform changes.
+        [Tooltip("Enable this if the size of the RectTransform will change.")]
+        public bool updateChanges = false;
+
+        //References:
+        RectTransform rectTransform;
+
+        //Property IDs:
+        int rectWidthID;
+        int rectHeightID;
+
+        //Previous SizeDelta:
+        Vector2 lastSizeDelta;
+
+        void Awake()
+        {
+            //Get RectTransform:
+            rectTransform = GetComponent<RectTransform>();
+
+            //Instantiate Material:
+            Image image = GetComponent<Image>();
+            image.material = Instantiate(image.material);
+            runtimeMaterial = image.materialForRendering;
+
+            //Shader IDs:
+            rectWidthID = Shader.PropertyToID("_RectWidth");
+            rectHeightID = Shader.PropertyToID("_RectHeight");
+        }
+
+        void Start()
+        {
+            //Set Values:
+            UpdateMaterial();
+        }
+
+        void Update()
+        {
+            if (updateChanges)
+            {
+                if (lastSizeDelta != rectTransform.sizeDelta)
+                {
+                    UpdateMaterial();
+                }
+            }
+        }
+
+        public void UpdateMaterial()
+        {
+            lastSizeDelta = rectTransform.sizeDelta;
+            runtimeMaterial.SetFloat(rectWidthID, lastSizeDelta.x);
+            runtimeMaterial.SetFloat(rectHeightID, lastSizeDelta.y);
+        }
+    }
+}