The goal: Have the shader support both clipping of Objects and transparency.
First i must apologize. I know people have asked how to add transparency to a shader a hundred times before but I cannot for the life of me get it to work.
I’m working on a Project based on this blog post:
The shader works wonders at clipping Objects and helps me a lot. However adding transparency is my achilles heel.
From what i’ve found, most people seem to solve their issues by adding tags like:
Tags { "RenderType" = "Transparent" "Queue" = "Transparent" }
and using a function that looks like this:
void surf (Input IN, inout SurfaceOutput o) {
o.Albedo = _Color.rgb;
o.Emission = _Color.rgb;
o.Alpha = _Color.a;
}
However the shader in question don’t have any functions like that. Between the different SubShaders and all the Passes and #pragmas i don’t know how to add such functionality.
Here is the shader I’m working on. Unmolested.
Shader "Custom/StandardClippable" {
Properties
{
_Color("Color", Color) = (1,1,1,1)
_MainTex("Albedo", 2D) = "white" {}
_Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
_Glossiness("Smoothness", Range(0.0, 1.0)) = 0.5
[Gamma] _Metallic("Metallic", Range(0.0, 1.0)) = 0.0
_MetallicGlossMap("Metallic", 2D) = "white" {}
_BumpScale("Scale", Float) = 1.0
_BumpMap("Normal Map", 2D) = "bump" {}
_Parallax ("Height Scale", Range (0.005, 0.08)) = 0.02
_ParallaxMap ("Height Map", 2D) = "black" {}
_OcclusionStrength("Strength", Range(0.0, 1.0)) = 1.0
_OcclusionMap("Occlusion", 2D) = "white" {}
_EmissionColor("Color", Color) = (0,0,0)
_EmissionMap("Emission", 2D) = "white" {}
_DetailMask("Detail Mask", 2D) = "white" {}
_DetailAlbedoMap("Detail Albedo x2", 2D) = "grey" {}
_DetailNormalMapScale("Scale", Float) = 1.0
_DetailNormalMap("Normal Map", 2D) = "bump" {}
[Enum(UV0,0,UV1,1)] _UVSec ("UV Set for secondary textures", Float) = 0
// UI-only data
[HideInInspector] _EmissionScaleUI("Scale", Float) = 0.0
[HideInInspector] _EmissionColorUI("Color", Color) = (1,1,1)
// Blending state
[HideInInspector] _Mode ("__mode", Float) = 0.0
[HideInInspector] _SrcBlend ("__src", Float) = 1.0
[HideInInspector] _DstBlend ("__dst", Float) = 0.0
[HideInInspector] _ZWrite ("__zw", Float) = 1.0
_planePos ("Clipping Plane Position", Vector) = ( 0, 0, 0, 1 )
_planePos2 ("Clipping Plane Position 2", Vector) = ( 0, 0, 0, 1 )
_planePos3 ("Clipping Plane Position 3", Vector) = ( 0, 0, 0, 1 )
_planeNorm ("Clipping Plane Normal", Vector) = ( 0, 1, 0, 1 )
_planeNorm2 ("Clipping Plane Normal 2", Vector) = ( 0, 1, 0, 1 )
_planeNorm3 ("Clipping Plane Normal 3", Vector) = ( 0, 1, 0, 1 )
}
CGINCLUDE
#define UNITY_SETUP_BRDF_INPUT MetallicSetup
ENDCG
SubShader
{
Tags { "RenderType"="Opaque" "PerformanceChecks"="False" }
LOD 300
// ------------------------------------------------------------------
// Base forward pass (directional light, emission, lightmaps, ...)
Pass
{
Name "FORWARD"
Tags { "LightMode" = "ForwardBase" }
Blend [_SrcBlend] [_DstBlend]
ZWrite [_ZWrite]
CGPROGRAM
#pragma target 3.0
// TEMPORARY: GLES2.0 temporarily disabled to prevent errors spam on devices without textureCubeLodEXT
#pragma exclude_renderers gles
// -------------------------------------
#pragma shader_feature _NORMALMAP
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma shader_feature _EMISSION
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
#pragma shader_feature _PARALLAXMAP
#pragma multi_compile_fwdbase
#pragma multi_compile_fog
#pragma vertex vertForwardBase
#pragma fragment fragForwardBase
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Additive forward pass (one light per pass)
Pass
{
Name "FORWARD_DELTA"
Tags { "LightMode" = "ForwardAdd" }
Blend [_SrcBlend] One
Fog { Color (0,0,0,0) } // in additive pass fog should be black
ZWrite Off
ZTest LEqual
CGPROGRAM
#pragma target 3.0
// GLES2.0 temporarily disabled to prevent errors spam on devices without textureCubeLodEXT
#pragma exclude_renderers gles
// -------------------------------------
#pragma shader_feature _NORMALMAP
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
#pragma shader_feature _PARALLAXMAP
#pragma multi_compile_fwdadd_fullshadows
#pragma multi_compile_fog
#pragma vertex vertForwardAdd
#pragma fragment fragForwardAdd
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Shadow rendering pass
Pass {
Name "ShadowCaster"
Tags { "LightMode" = "ShadowCaster" }
ZWrite On ZTest LEqual
CGPROGRAM
#pragma target 3.0
// TEMPORARY: GLES2.0 temporarily disabled to prevent errors spam on devices without textureCubeLodEXT
#pragma exclude_renderers gles
// -------------------------------------
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma multi_compile_shadowcaster
#pragma vertex vertShadowCaster
#pragma fragment fragShadowCaster
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_shadow_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Deferred pass
Pass
{
Name "DEFERRED"
Tags { "LightMode" = "Deferred" }
CGPROGRAM
#pragma target 3.0
// TEMPORARY: GLES2.0 temporarily disabled to prevent errors spam on devices without textureCubeLodEXT
#pragma exclude_renderers nomrt gles
// -------------------------------------
#pragma shader_feature _NORMALMAP
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma shader_feature _EMISSION
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
#pragma shader_feature _PARALLAXMAP
#pragma multi_compile ___ UNITY_HDR_ON
#pragma multi_compile LIGHTMAP_OFF LIGHTMAP_ON
#pragma multi_compile DIRLIGHTMAP_OFF DIRLIGHTMAP_COMBINED DIRLIGHTMAP_SEPARATE
#pragma multi_compile DYNAMICLIGHTMAP_OFF DYNAMICLIGHTMAP_ON
#pragma vertex vertDeferred
#pragma fragment fragDeferred
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Extracts information for lightmapping, GI (emission, albedo, ...)
// This pass it not used during regular rendering.
Pass
{
Name "META"
Tags { "LightMode"="Meta" }
Cull Off
CGPROGRAM
#pragma vertex vert_meta
#pragma fragment frag_meta
#pragma shader_feature _EMISSION
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
#include "UnityStandardMeta.cginc"
ENDCG
}
}
SubShader
{
Tags { "RenderType"="Opaque" "PerformanceChecks"="False" }
LOD 150
// ------------------------------------------------------------------
// Base forward pass (directional light, emission, lightmaps, ...)
Pass
{
Name "FORWARD"
Tags { "LightMode" = "ForwardBase" }
Blend [_SrcBlend] [_DstBlend]
ZWrite [_ZWrite]
CGPROGRAM
#pragma target 2.0
#pragma shader_feature _NORMALMAP
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma shader_feature _EMISSION
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
// SM2.0: NOT SUPPORTED shader_feature _PARALLAXMAP
#pragma skip_variants SHADOWS_SOFT DIRLIGHTMAP_COMBINED DIRLIGHTMAP_SEPARATE
#pragma multi_compile_fwdbase
#pragma multi_compile_fog
#pragma vertex vertForwardBase
#pragma fragment fragForwardBase
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Additive forward pass (one light per pass)
Pass
{
Name "FORWARD_DELTA"
Tags { "LightMode" = "ForwardAdd" }
Blend [_SrcBlend] One
Fog { Color (0,0,0,0) } // in additive pass fog should be black
ZWrite Off
ZTest LEqual
CGPROGRAM
#pragma target 2.0
#pragma shader_feature _NORMALMAP
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
// SM2.0: NOT SUPPORTED shader_feature _PARALLAXMAP
#pragma skip_variants SHADOWS_SOFT
#pragma multi_compile_fwdadd_fullshadows
#pragma multi_compile_fog
#pragma vertex vertForwardAdd
#pragma fragment fragForwardAdd
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Shadow rendering pass
Pass {
Name "ShadowCaster"
Tags { "LightMode" = "ShadowCaster" }
ZWrite On ZTest LEqual
CGPROGRAM
#pragma target 2.0
#pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON
#pragma skip_variants SHADOWS_SOFT
#pragma multi_compile_shadowcaster
#pragma vertex vertShadowCaster
#pragma fragment fragShadowCaster
#pragma multi_compile __ CLIP_ONE CLIP_TWO CLIP_THREE
#include "standard_shadow_clipped.cginc"
ENDCG
}
// ------------------------------------------------------------------
// Extracts information for lightmapping, GI (emission, albedo, ...)
// This pass it not used during regular rendering.
Pass
{
Name "META"
Tags { "LightMode"="Meta" }
Cull Off
CGPROGRAM
#pragma vertex vert_meta
#pragma fragment frag_meta
#pragma shader_feature _EMISSION
#pragma shader_feature _METALLICGLOSSMAP
#pragma shader_feature ___ _DETAIL_MULX2
#include "UnityStandardMeta.cginc"
ENDCG
}
}
FallBack "VertexLit"
CustomEditor "StandardShaderGUI"
}
I’m at a loss.
Thoughts?