Hi devs!!!
I have a shader that is the combination of two shaders. The first one make the material to a toon material and the second one allow that the material can draw shadows when you use a point light for example.
In addition, the first one allows tint the material with the light color.
The shader works perfectly: you can obtain a toon material that can draw shadows…but the problem is that the feature of tint the material is lost…
I’m not sure how to fix that…
hader "Unnamed Shaders/Toony Shadows"
{
Properties
{
_Color ("Main Color", Color) = (1,1,1,1)
_MainTex ("Base (RGB)", 2D) = "white" {}
_Ramp ("Toon Ramp (RGB)", 2D) = "gray" {}
_Brightness ("Brightness 1 = neutral", Float) = 1.0
_SColor ("Shadow Color", Color) = (0.0,0.0,0.0,1)
_LColor ("Highlight Color", Color) = (0.5,0.5,0.5,1)
}
SubShader
{
//Pass
//{
Tags { "RenderType"="Opaque" }
LOD 200
CGPROGRAM
#pragma surface surf ToonRamp addshadow
sampler2D _MainTex;
sampler2D _Ramp;
float4 _LColor;
float4 _SColor;
float4 _Color;
// custom lighting function that uses a texture ramp based
// on angle between light direction and normal
#pragma lighting ToonRamp exclude_path:prepass
inline half4 LightingToonRamp (SurfaceOutput s, half3 lightDir, half atten)
{
#ifndef USING_DIRECTIONAL_LIGHT
lightDir = normalize(lightDir);
#endif
//Calculate N . L
half d = (dot (s.Normal, lightDir)*0.5 + 0.5)*atten;
//Basic toon shading
half3 ramp = tex2D(_Ramp, float2(d,d)).rgb;
//Gooch shading
ramp = lerp(_SColor,_LColor,ramp);
half4 c;
c.rgb = s.Albedo * _LightColor0.rgb * ramp * (atten * 2);
c.a = 0;
return c;
}
struct Input
{
float2 uv_MainTex : TEXCOORD0;
};
void surf (Input IN, inout SurfaceOutput o)
{
half4 c = tex2D(_MainTex, IN.uv_MainTex);
o.Albedo = c.rgb * _Color.rgb;
o.Alpha = c.a;
}
ENDCG
//}
Pass
{
Tags {"RenderType"="Opaque" "LightMode" = "ForwardBase"}
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_fwdbase
#pragma fragmentoption ARB_fog_exp2
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"
#include "AutoLight.cginc"
struct v2f
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
LIGHTING_COORDS(1,2)
};
float4 _MainTex_ST;
v2f vert (appdata_tan v)
{
v2f o;
o.pos = mul( UNITY_MATRIX_MVP, v.vertex);
o.uv = TRANSFORM_TEX (v.texcoord, _MainTex).xy;
TRANSFER_VERTEX_TO_FRAGMENT(o);
return o;
}
sampler2D _MainTex;
fixed _Brightness;
fixed4 frag(v2f i) : COLOR
{
fixed atten = LIGHT_ATTENUATION(i) * _Brightness; // Light attenuation + shadows.
//fixed atten = SHADOW_ATTENUATION(i); // Shadows ONLY.
return tex2D(_MainTex, i.uv) * atten; //_Brightness;
}
ENDCG
}
Pass
{
Tags {"RenderType"="Opaque" "LightMode" = "ForwardAdd"}
Blend One One
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_fwdadd_fullshadows
#pragma fragmentoption ARB_fog_exp2
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"
#include "AutoLight.cginc"
struct v2f
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
LIGHTING_COORDS(1,2)
};
float4 _MainTex_ST;
v2f vert (appdata_tan v)
{
v2f o;
o.pos = mul( UNITY_MATRIX_MVP, v.vertex);
o.uv = TRANSFORM_TEX (v.texcoord, _MainTex).xy;
TRANSFER_VERTEX_TO_FRAGMENT(o);
return o;
}
sampler2D _MainTex;
fixed _Brightness;
#if _COLOR_ON
fixed4 _Color;
#endif
fixed4 frag(v2f i) : COLOR
{
fixed atten = LIGHT_ATTENUATION(i) * _Brightness; // Light attenuation + shadows.
//fixed atten = SHADOW_ATTENUATION(i)* _Brightness; // Shadows ONLY.
return tex2D(_MainTex, i.uv) * atten;//_Brightness;
}
ENDCG
}
}
Fallback "Diffuse"
}
Some idea?
Thanks!!!
And also, wouldn’t you just leave the shadows up to the toon shader? the atten variable in your lighting function already has shadows!
It had a four-bar toon ramp, and shadows working. 