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"Spine/Special/Skeleton Grayscale" shader
// - Unlit
// - Premultiplied Alpha Blending (Optional straight alpha input)
// - Double-sided, no depth
Shader "Spine/Special/Skeleton Grayscale" {
Properties {
_GrayPhase ("Phase", Range(0, 1)) = 1
[NoScaleOffset] _MainTex ("MainTex", 2D) = "white" {}
_Cutoff ("Shadow alpha cutoff", Range(0,1)) = 0.1
[Toggle(_STRAIGHT_ALPHA_INPUT)] _StraightAlphaInput("Straight Alpha Texture", Int) = 0
}
SubShader {
Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" }
Blend One OneMinusSrcAlpha
Cull Off
ZWrite Off
Lighting Off
Pass {
CGPROGRAM
#pragma shader_feature _ _STRAIGHT_ALPHA_INPUT
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
sampler2D _MainTex;
float _GrayPhase;
struct VertexInput {
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
float4 vertexColor : COLOR;
};
struct VertexOutput {
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
float4 vertexColor : COLOR;
};
VertexOutput vert (VertexInput v) {
VertexOutput o = (VertexOutput)0;
o.uv = v.uv;
o.vertexColor = v.vertexColor;
o.pos = UnityObjectToClipPos(v.vertex);
return o;
}
float4 frag (VertexOutput i) : COLOR {
float4 rawColor = tex2D(_MainTex,i.uv);
float finalAlpha = (rawColor.a * i.vertexColor.a);
#if defined(_STRAIGHT_ALPHA_INPUT)
rawColor.rgb *= rawColor.a;
#endif
rawColor.rgb *= i.vertexColor.rgb;
float3 finalColor = lerp(rawColor.rgb, dot(rawColor.rgb, float3(0.3, 0.59, 0.11)), _GrayPhase);
return fixed4(finalColor, finalAlpha);
}
ENDCG
}
Pass {
Name "Caster"
Tags { "LightMode"="ShadowCaster" }
Offset 1, 1
ZWrite On
ZTest LEqual
Fog { Mode Off }
Cull Off
Lighting Off
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_shadowcaster
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"
sampler2D _MainTex;
fixed _Cutoff;
struct VertexOutput {
V2F_SHADOW_CASTER;
float2 uv : TEXCOORD1;
};
VertexOutput vert (appdata_base v) {
VertexOutput o;
o.uv = v.texcoord;
TRANSFER_SHADOW_CASTER(o)
return o;
}
float4 frag (VertexOutput i) : COLOR {
fixed4 texcol = tex2D(_MainTex, i.uv);
clip(texcol.a - _Cutoff);
SHADOW_CASTER_FRAGMENT(i)
}
ENDCG
}
}
FallBack "Diffuse"
}
@Bilalmirza

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commented Dec 12, 2018

This shader doesn't work correctly on android. Slots with color keys disappear and lots of other stuff also disappears.

@Bilalmirza

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commented Dec 12, 2018

had to remove #if defined(_STRAIGHT_ALPHA_INPUT) for it to work. I wasn't able to toggle this through code or from the editor :/

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