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125 lines
3.3 KiB
125 lines
3.3 KiB
#if UNITY_EDITOR
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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/// <summary>
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/// 主要用于计算overdraw像素
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/// </summary>
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public class EffectEvla
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{
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public Camera _camera;
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SingleEffectEvla singleEffectEvla;
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public float time = 0;
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//采集特效数据的区域大小
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int rtSizeWidth = 512;
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int rtSizeHeight = 512;
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RenderTexture rt;
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public EffectEvla(Camera camera)
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{
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SetCamera(camera);
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rt = new RenderTexture(rtSizeWidth, rtSizeHeight, 0, RenderTextureFormat.ARGB32);
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singleEffectEvla = new SingleEffectEvla(1);
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}
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public void SetCamera(Camera camera)
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{
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_camera = camera;
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camera.SetReplacementShader(Shader.Find("ParticleEffectProfiler/OverDraw"), "");
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}
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public void Update()
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{
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time += Time.deltaTime;
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RecordOverDrawData(singleEffectEvla);
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}
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public EffectEvlaData[] GetEffectEvlaData()
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{
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return singleEffectEvla.GetEffectEvlaDatas();
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}
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#region overdraw
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public void RecordOverDrawData(SingleEffectEvla singleEffectEvla)
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{
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long pixTotal = 0;
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long pixActualDraw = 0;
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GetCameraOverDrawData(out pixTotal, out pixActualDraw);
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// 往数据+1
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singleEffectEvla.UpdateOneData(pixTotal, pixActualDraw);
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}
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public void GetCameraOverDrawData(out long pixTotal, out long pixActualDraw)
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{
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//记录当前激活的渲染纹理
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RenderTexture activeTextrue = RenderTexture.active;
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//渲染指定范围的rt，并记录范围内所有rgb像素值
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_camera.targetTexture = rt;
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_camera.Render();
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RenderTexture.active = rt;
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Texture2D texture = new Texture2D(rt.width, rt.height, TextureFormat.ARGB32, false);
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texture.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
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GetOverDrawData(texture, out pixTotal, out pixActualDraw);
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//恢复之前激活的渲染纹理
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RenderTexture.active = activeTextrue;
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Texture2D.DestroyImmediate(texture);
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rt.Release();
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_camera.targetTexture = null;
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}
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public void GetOverDrawData(Texture2D texture, out long pixTotal, out long pixActualDraw)
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{
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var texw = texture.width;
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var texh = texture.height;
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var pixels = texture.GetPixels();
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int index = 0;
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pixTotal = 0;
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pixActualDraw = 0;
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for (var y = 0; y < texh; y++)
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{
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for (var x = 0; x < texw; x++)
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{
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float r = pixels[index].r;
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float g = pixels[index].g;
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float b = pixels[index].b;
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bool isEmptyPix = IsEmptyPix(r, g, b);
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if (!isEmptyPix)
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{
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pixTotal++;
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}
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int drawThisPixTimes = DrawPixTimes(r, g, b);
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pixActualDraw += drawThisPixTimes;
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index++;
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}
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}
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}
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//计算单像素的绘制次数
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public int DrawPixTimes(float r, float g, float b)
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{
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//在OverDraw.Shader中像素每渲染一次，g值就会叠加0.04
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return Convert.ToInt32(g / 0.04);
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}
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public bool IsEmptyPix(float r, float g, float b)
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{
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return r == 0 && g == 0 && b == 0;
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}
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#endregion
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}
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#endif
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