using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

public class ClearRTAfterTransparent : ScriptableRendererFeature
{
    class ClearPass : ScriptableRenderPass
    {
        public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
        {
            CommandBuffer cmd = CommandBufferPool.Get("Clear RT After Transparent");
            cmd.ClearRenderTarget(true, true, Color.clear); // 清颜色 & 深度
            context.ExecuteCommandBuffer(cmd);
            CommandBufferPool.Release(cmd);
        }
    }

    ClearPass pass;

    public override void Create()
    {
        pass = new ClearPass
        {
            renderPassEvent = RenderPassEvent.AfterRenderingTransparents // 在透明物体之后
        };
    }

    public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
    {
        renderer.EnqueuePass(pass);
    }
}