unity 后处理优化整理

最新推荐文章于 2025-06-22 01:17:03 发布

SnoopyNa2Co3

最新推荐文章于 2025-06-22 01:17:03 发布

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CC 4.0 BY-SA版权

分类专栏：性能优化文章标签：优化后处理优化

本文链接：https://blog.youkuaiyun.com/SnoopyNa2Co3/article/details/89382980

关于后处理优化，整理几条

1.用OnPreRender和OnPostRender替换OnRenderImage

    private void OnPreRender()
    {    
        cameraRenderTex = RenderTexture.GetTemporary(Screen.width, Screen.height, 24, RenderTextureFormat.Default);
        mainCamera.targetTexture = cameraRenderTex;
    }

    private void OnPostRender()
    {
        Graphics.Blit(cameraRenderTex, null as RenderTexture);
        RenderTexture.ReleaseTemporary(cameraRenderTex);
    }

当我们的camera开启MSAA或者HDR的时候，会导致后处理不起效果，HDR可以不用，不过抗锯齿还是要用的，这是直接改rendertexture的参数就可以

    private void OnPreRender()
    {    
        if(QualitySettings.antiAliasing == 0)
        {
            cameraRenderTex = RenderTexture.GetTemporary(Screen.width, Screen.height, 24, RenderTextureFormat.Default, RenderTextureReadWrite.Default);
        }
        else
        {
            cameraRenderTex = RenderTexture.GetTemporary(Screen.width, Scree