updateCount
This counter is incremented when the Texture is updated.
Read time 1 minuteLast updated 4 days ago
Definition
- Type: Property
- Namespace: UnityEngine
- Assembly: UnityEngine.CoreModule
public uint updateCount { get; }
Remarks
Note: If you perform an update from the GPU side, you should increment the counter yourself. (For instance, when blitting into a RenderTexture). (see Texture.IncrementUpdateCount()).
Examples
using UnityEngine;using System.Collections.Generic;public class MyTextureCache{ struct TextureCacheMeta { internal int index; internal uint updateCount; } Dictionary<Texture, TextureCacheMeta> m_TextureMetas = new Dictionary<Texture, TextureCacheMeta>(); RenderTexture m_Cache; public Texture cache { get { return m_Cache; } } public int CacheTexture(Texture Texture) { var index = -1; TextureCacheMeta meta; if (m_TextureMetas.TryGetValue(Texture, out meta)) { if (meta.updateCount != Texture.updateCount) { // Texture has changed since last caching // So blit again into the cache Texture BlitTextureAt(meta.index, Texture); meta.updateCount = Texture.updateCount; m_TextureMetas[Texture] = meta; } } else { index = GetNextIndex(); if (index < 0) { Debug.LogError("Invalid index"); return -1; } m_TextureMetas[Texture] = new TextureCacheMeta { index = index, updateCount = Texture.updateCount }; } return index; } void BlitTextureAt(int index, Texture Texture) { /* copy pixels in cache */ } int GetNextIndex() { return -1; /* Get next index to use in the cache */ }}