93 lines
2.4 KiB
C#
93 lines
2.4 KiB
C#
using FairyGUI;
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using NBF;
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using UnityEngine;
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using UnityEngine.UI;
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public class UIBlur : MonoBehaviour
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{
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[Header("Quality")] public RenderTexture blurRT;
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[Range(1, 6)] public int iterations = 2; // 模糊迭代次数
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[Range(0.5f, 4f)] public float blurSize = 1.2f;
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[Header("Shader")] public Shader blurShader;
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Material _mat;
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RenderTexture _capturedRT;
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public static UIBlur Instance { get; private set; }
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void Awake()
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{
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blurRT = new RenderTexture((int)(Screen.width * 0.5f), (int)(Screen.height * 0.5f), 0,
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RenderTextureFormat.ARGB32);
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_mat = new Material(blurShader);
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DontDestroyOnLoad(gameObject);
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Instance = this;
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}
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public void CaptureAndBlurOnce()
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{
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if (blurRT == null) return;
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var captureCamera = Camera.main;
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if (captureCamera == null) return;
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int w = blurRT.width;
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int h = blurRT.width;
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ReleaseRTs();
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var oldEnabled = StageCamera.main.enabled;
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StageCamera.main.enabled = false;
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_capturedRT = new RenderTexture(w, h, 0, RenderTextureFormat.ARGB32);
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_capturedRT.Create();
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// 1) 抓摄像机画面到RT（不做ReadPixels）
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var prevTarget = captureCamera.targetTexture;
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captureCamera.targetTexture = _capturedRT;
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captureCamera.Render();
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captureCamera.targetTexture = prevTarget;
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StageCamera.main.enabled = oldEnabled;
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// 2) 模糊：ping-pong
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var rt1 = RenderTexture.GetTemporary(w, h, 0, RenderTextureFormat.ARGB32);
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var rt2 = RenderTexture.GetTemporary(w, h, 0, RenderTextureFormat.ARGB32);
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Graphics.Blit(_capturedRT, rt1);
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_mat.SetFloat("_BlurSize", blurSize);
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for (int i = 0; i < iterations; i++)
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{
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// 横向
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_mat.SetVector("_Direction", new Vector2(1, 0));
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Graphics.Blit(rt1, rt2, _mat);
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// 纵向
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_mat.SetVector("_Direction", new Vector2(0, 1));
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Graphics.Blit(rt2, rt1, _mat);
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}
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Graphics.Blit(rt1, blurRT);
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RenderTexture.ReleaseTemporary(rt1);
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RenderTexture.ReleaseTemporary(rt2);
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}
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void ReleaseRTs()
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{
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if (_capturedRT != null)
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{
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_capturedRT.Release();
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Destroy(_capturedRT);
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_capturedRT = null;
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}
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}
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void OnDestroy()
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{
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ReleaseRTs();
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if (_mat) Destroy(_mat);
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}
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} |