Is it possible to add custom shader pass in HDRP shader?

[jjobby]

HDRP shader has many shader pass with name and tag. I’d like to create a simple fur shader which uses multiple shader pass like in normal rendering pipeline. I’ve tried that but those shader pass weren’t executed. Can it be done in current HDRP?

[jjobby]

For a better explanation, this is what I want to do. Adding multiple custom pass in subshader.

SubShader
{
Tags { “RenderType”=“Transparent” “IgnoreProjector”=“True” “Queue”=“Transparent”}
ZWrite Off
Blend SrcAlpha OneMinusSrcAlpha
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 3.0

#include “UnityCG.cginc”

struct v2f
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
fixed4 dif : COLOR;
};

sampler2D _MainTex;
float4 _MainTex_ST;

v2f vert (appdata_base v)
{
v2f o;
o.pos = UnityObjectToClipPos(v.vertex);
o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
o.dif = LambertDiffuse(v.normal);
return o;
}

fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.uv);
col.rgb *= i.dif;
return col;
}
ENDCG
}

Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define FURSTEP 0.05
#include “FurHelper.cginc”
ENDCG
}

Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define FURSTEP 0.10
#include “FurHelper.cginc”
ENDCG
}

…

Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define FURSTEP 0.90
#include “FurHelper.cginc”
ENDCG
}

Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define FURSTEP 0.95
#include “FurHelper.cginc”
ENDCG
}
}
}

I use normal PBR as an example because the code is shorter but the idea is the same. I did this in HDRP shader but those custom shader pass weren’t executed. The shader doesn’t have any compile error. HDRP shader has already had 10 or more shader pass by default. I just want to ask that can HDRP shader support additional custom pass like this in subshader?