public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
{
		// The target is used before allocation
		m_CustomPass.Setup(renderer.cameraColorTarget);
		 // Letting the renderer know which passes are used before allocation
		renderer.EnqueuePass(m_ScriptablePass);
}

public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
{
		// Letting the renderer know which passes are used before allocation
		renderer.EnqueuePass(m_ScriptablePass);
}

public override void SetupRenderPasses(ScriptableRenderer renderer, in RenderingData renderingData)
{
		// The target is used after allocation
		m_CustomPass.Setup(renderer.cameraColorTarget);
}

public void Dispose()
{
	_customOpaqueTexture?.Release();
}

protected override void Dispose(bool disposing)
{
	renderObjectsPass.Dispose();
}

private RenderTargetHandle _cameraOpaqueTexture;

private RTHandle _cameraOpaqueTexture;

 RenderTargetIdentifier m_Destination;

 RTHandle m_DestinationColor;
 RTHandle m_DestinationDepth;

private RenderTargetHandle _opaqueMap;

public override void OnCameraSetup( CommandBuffer cmd, ref RenderingData renderingData )
{
	var cameraTextureDescriptor = renderingData.cameraData.cameraTargetDescriptor;
	opaqueMap.Init( _textureName );
	int width = DownSampleUtil.GetLength( cameraTextureDescriptor.width, downSample );
	int height = DownSampleUtil.GetLength( cameraTextureDescriptor.height, downSample );
	cmd.GetTemporaryRT( _opaqueMap.id, width, height, 0, FilterMode.Bilinear, RenderTextureFormat.ARGBHalf );
	this.ConfigureTarget( _opaqueMap.Identifier() );
	this.ConfigureClear( ClearFlag.All, Color.clear );
}

private RTHandle _opaqueMap;

public override void OnCameraSetup( CommandBuffer cmd, ref RenderingData renderingData )
{
	var cameraTextureDescriptor = renderingData.cameraData.cameraTargetDescriptor;
	cameraTextureDescriptor.colorFormat = RenderTextureFormat.ARGBHalf;
	cameraTextureDescriptor.depthBufferBits = 0;
	RenderingUtils.ReAllocateIfNeeded(
		ref _opaqueMap,
		Vector2.one * 0.5f, 
		cameraTextureDescriptor,
		FilterMode.Bilinear,
		TextureWrapMode.Clamp,
		false,
		1,
		0f,
		"_OpaqueMap"
	);
	this.ConfigureTarget( _opaqueMap );
	this.ConfigureClear( ClearFlag.All, Color.clear );
}

  Shader.SetGlobalTexture("_OpaqueMap", _opaqueMap);

  _opaqueMap = RTHandles.Alloc(Shader.GetGlobalTexture("_OpaqueMap"));

public override void OnCameraCleanup( CommandBuffer cmd )
{
	_transparentObjectsTexture = null;
	_transparentObjectsDepthAttachment = null;
}

public override void OnCameraCleanup( CommandBuffer cmd )
{
	cmd.ReleaseTemporaryRT( _opaqueMap.id );
}

public override void OnCameraCleanup( CommandBuffer cmd )
{
	_opaqueMap?.Release();
}

cmd.Blit( _transparentObjectsTexture.Identifier(), _cameraOpaqueTexture.Identifier() );

Blitter.BlitCameraTexture2D(cmd,_transparentObjectsTexture, _cameraOpaqueTexture);

Blit( cmd, tempTarget.Identifier(), target.Identifier(), _blurMaterial )

Blitter.BlitCameraTexture(cmd, tempTarget, target, _blurMaterial, 0);

#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
#include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"

struct Attributes
{
#if SHADER_API_GLES
		float4 positionOS : POSITION;
		float2 uv : TEXCOORD0;
#else
		uint vertexID : SV_VertexID;
#endif
		UNITY_VERTEX_INPUT_INSTANCE_ID
};
struct Varyings
{
		float2 texcoord : TEXCOORD0;
		// UNITY_FOG_COORDS(1) //目前没找到可以替代的
		float4 positionCS : SV_POSITION;
		UNITY_VERTEX_OUTPUT_STEREO
};
Varyings vert(Attributes v)
{
		Varyings o;
		UNITY_SETUP_INSTANCE_ID(v);
		UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
#if SHADER_API_GLES
		float4 pos = v.positionOS;
		float2 uv  = v.uv;
#else
		float4 pos = GetFullScreenTriangleVertexPosition(v.vertexID);
		float2 uv = GetFullScreenTriangleTexCoord(v.vertexID);
#endif

		o.positionCS = pos;
		o.texcoord = uv * _BlitScaleBias.xy + _BlitScaleBias.zw;
		return o;
}

half4 frag(Varyings i) : SV_Target
{
	half4 col = SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearRepeat, i.uv);
	return col;
}