阿基拉的Unity世界大冒險之 VS ScriptableRenderer章 後記(相關SetRenderTaget的修改)

之前阿基拉曾經說對ScriptableRenderer動大刀，但實際的情況是沒這麼嚴重，算是做了一點小手術，不過由於已經不是原來的LWRP，所以還是得自行重新建立一份跟LWRP很像的海埔新生地（新大陸）到新的地方。

目前大概是做了這些手術：

1. ScriptableRenderPass.cs：
   …
   //add by akilar, append a flag for check need set render target
   public virtual bool IsSetRenderTarget() { return true; }
   …
2. ScriptableRenderer.cs：
   //add by akilar
   void ExecuteRenderPass(ScriptableRenderContext context, ScriptableRenderPass renderPass,
       ref RenderingData renderingData)
   {
       //add by akilar
       if (!renderPass.IsSetRenderTarget())
       {
           renderPass.Execute(context, ref renderingData);
           return;
       }
       ...
       //modify by akilar, disalbe first check setting, only check need reset render target
       /*if (passColorAttachment == m_CameraColorTarget &&
              !m_FirstCameraRenderPassExecuted)
       {
           m_FirstCameraRenderPassExecuted = true;
           ...
       }
       // Only setup render target if current render pass attachments are different from the active
           ones
       else*/
       if (passColorAttachment != m_ActiveColorAttachment || passDepthAttachment !=
           m_ActiveDepthAttachment)
       {
           SetRenderTarget(cmd, passColorAttachment, passDepthAttachment, renderPass.clearFlag,
               renderPass.clearColor);
       }
       ...
   }

狀況如下…

跟LWRP的恩怨情仇持續中…讓我們繼續看下去…