koobas.hobune.stream
Shader Shadow Effect Issues
I've been working on this shader and I have not received any errors from the console. But I'm not getting all the effects from the shader. There should be a shadow effect along with the rest of the shader's effects. But it's not appearing. Did I not implement my shadow effect correctly? How do I determine what is wrong if the console doesn't say there's anything wrong?
Shader "Custom/Shadow Shader" {
Properties {
_MainTex ("Base (RGB)", 2D) = "white" {}
_Bump ("Bump", 2D) = "bump" {}
_ColorMerge ("Color Merge", Range(0.1,20000)) = 8
_Ramp ("Ramp Texture", 2D) = "white" {}
_Outline ("Outline", Range(0, 0.15)) = 0.08
_Color ("Diffuse Color", Color) = (1,1,1,1)
_UnlitColor ("Unlit Diffuse Color", Color) = (0.5,0.5,0.5,1)
_DiffuseThreshold ("Threshold for Diffuse Colors", Range(0,1))
= 0.1
_ShadowColor ("Outline Color", Color) = (0,0,0,1)
_LitShadowThickness ("Lit Outline Thickness", Range(0,1)) = 0.1
_UnlitShadowThickness ("Unlit Outline Thickness", Range(0,1))
= 0.4
_SpecColor ("Specular Color", Color) = (1,1,1,1)
_Shininess ("Shininess", Float) = 10
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 200
Pass {
Cull Front
Lighting Off
ZWrite On
Tags { "LightMode"="ForwardBase" }
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
uniform float4 _LightColor0;
// color of light source (from "Lighting.cginc")
// User-specified properties
uniform float4 _Color;
uniform float4 _UnlitColor;
uniform float _DiffuseThreshold;
uniform float4 _ShadowColor;
uniform float _LitShadowThickness;
uniform float _UnlitShadowThickness;
uniform float4 _SpecColor;
uniform float _Shininess;
struct vertexInput {
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct vertexOutput {
float4 pos : SV_POSITION;
float4 posWorld : TEXCOORD0;
float3 normalDir : TEXCOORD1;
};
vertexOutput vert(vertexInput input)
{
vertexOutput output;
float4x4 modelMatrix = _Object2World;
float4x4 modelMatrixInverse = _World2Object;
// multiplication with unity_Scale.w is unnecessary
// because we normalize transformed vectors
output.posWorld = mul(modelMatrix, input.vertex);
output.normalDir = normalize(
mul(float4(input.normal, 0.0), modelMatrixInverse).xyz);
output.pos = mul(UNITY_MATRIX_MVP, input.vertex);
return output;
}
float4 frag(vertexOutput input) : COLOR
{
float3 normalDirection = normalize(input.normalDir);
float3 viewDirection = normalize(
_WorldSpaceCameraPos - input.posWorld.xyz);
float3 lightDirection;
float attenuation;
if (0.0 == _WorldSpaceLightPos0.w) // directional light?
{
attenuation = 1.0; // no attenuation
lightDirection = normalize(_WorldSpaceLightPos0.xyz);
}
else // point or spot light
{
float3 vertexToLightSource =
_WorldSpaceLightPos0.xyz - input.posWorld.xyz;
float distance = length(vertexToLightSource);
attenuation = 1.0 / distance; // linear attenuation
lightDirection = normalize(vertexToLightSource);
}
// default: unlit
float3 fragmentColor = _UnlitColor.rgb;
// low priority: diffuse illumination
if (attenuation
* max(0.0, dot(normalDirection, lightDirection))
>= _DiffuseThreshold)
{
fragmentColor = _LightColor0.rgb * _Color.rgb;
}
// higher priority: outline
if (dot(viewDirection, normalDirection)
< lerp(_UnlitShadowThickness, _LitShadowThickness,
max(0.0, dot(normalDirection, lightDirection))))
{
fragmentColor = _LightColor0.rgb * _ShadowColor.rgb;
}
// highest priority: highlights
if (dot(normalDirection, lightDirection) > 0.0
// light source on the right side?
&& attenuation * pow(max(0.0, dot(
reflect(-lightDirection, normalDirection),
viewDirection)), _Shininess) > 0.5)
// more than half highlight intensity?
{
fragmentColor = _SpecColor.a
* _LightColor0.rgb * _SpecColor.rgb
+ (1.0 - _SpecColor.a) * fragmentColor;
}
return float4(fragmentColor, 1.0);
}
struct a2v
{
float4 vertex : POSITION;
float3 normal : NORMAL;
float3 tangent : TANGENT;
};
struct v2f
{
float4 pos : POSITION;
};
float _Outline;
v2f vert (a2v v)
{
v2f o;
float4 pos = mul( UNITY_MATRIX_MV, v.vertex);
float3 normal = mul( (float3x3)UNITY_MATRIX_IT_MV, v.normal);
normal.z = -0.4;
pos = pos + float4(normalize(normal),0) * _Outline;
o.pos = mul(UNITY_MATRIX_P, pos);
return o;
}
float4 frag (v2f IN) : COLOR
{
return float(0);
}
ENDCG
}
Pass {
Cull Back
Lighting On
Tags { "LightMode"="ForwardBase" }
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
uniform float4 _LightColor0;
// color of light source (from "Lighting.cginc")
// User-specified properties
uniform float4 _Color;
uniform float4 _UnlitColor;
uniform float _DiffuseThreshold;
uniform float4 _ShadowColor;
uniform float _LitShadowThickness;
uniform float _UnlitShadowThickness;
uniform float4 _SpecColor;
uniform float _Shininess;
struct vertexInput {
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct vertexOutput {
float4 pos : SV_POSITION;
float4 posWorld : TEXCOORD0;
float3 normalDir : TEXCOORD1;
};
vertexOutput vert(vertexInput input)
{
vertexOutput output;
float4x4 modelMatrix = _Object2World;
float4x4 modelMatrixInverse = _World2Object;
// multiplication with unity_Scale.w is unnecessary
// because we normalize transformed vectors
output.posWorld = mul(modelMatrix, input.vertex);
output.normalDir = normalize(
mul(float4(input.normal, 0.0), modelMatrixInverse).rgb);
output.pos = mul(UNITY_MATRIX_MVP, input.vertex);
return output;
}
float4 frag(vertexOutput input) : COLOR
{
float3 normalDirection = normalize(input.normalDir);
float3 viewDirection = normalize(
_WorldSpaceCameraPos - input.posWorld.rgb);
float3 lightDirection;
float attenuation;
if (0.0 == _WorldSpaceLightPos0.w) // directional light?
{
attenuation = 1.0; // no attenuation
lightDirection = normalize(_WorldSpaceLightPos0.xyz);
}
else // point or spot light
{
float3 vertexToLightSource =
_WorldSpaceLightPos0.xyz - input.posWorld.xyz;
float distance = length(vertexToLightSource);
attenuation = 1.0 / distance; // linear attenuation
lightDirection = normalize(vertexToLightSource);
}
float4 fragmentColor = float4(0.0, 0.0, 0.0, 0.0);
if (dot(normalDirection, lightDirection) > 0.0
// light source on the right side?
&& attenuation * pow(max(0.0, dot(
reflect(-lightDirection, normalDirection),
viewDirection)), _Shininess) > 0.5)
// more than half highlight intensity?
{
fragmentColor =
float4(_LightColor0.rgb, 1.0) * _SpecColor;
}
return fragmentColor;
}
sampler2D _MainTex;
sampler2D _Bump;
sampler2D _Ramp;
float4 _MainTex_ST;
float4 _Bump_ST;
float _Tooniness;
float _ColorMerge;
struct a2v
{
float4 vertex : POSITION;
float3 normal : NORMAL;
float4 texcoord : TEXCOORD0;
float4 tangent : TANGENT;
};
struct v2f
{
float4 pos : POSITION;
float2 uv : TEXCOORD0;
float2 uv2 : TEXCOORD1;
float3 lightDirection : TEXCOORD2;
};
v2f vert (a2v v)
{
v2f o;
//Create a rotation matrix for tangent space
TANGENT_SPACE_ROTATION;
//Store the light's direction in tangent space
o.lightDirection = mul(rotation, ObjSpaceLightDir(v.vertex));
//Transform the vertex to projection space
o.pos = mul( UNITY_MATRIX_MVP, v.vertex);
//Get the UV coordinates
o.uv = TRANSFORM_TEX (v.texcoord, _MainTex);
o.uv2 = TRANSFORM_TEX (v.texcoord, _Bump);
return o;
}
float4 frag(v2f i) : COLOR
{
//Get the color of the pixel from the texture
float4 c = tex2D (_MainTex, i.uv);
//Merge the colours
c.rgb = (floor(c.rgb*_ColorMerge)/_ColorMerge);
//Get the normal from the bump map
float3 n = UnpackNormal(tex2D (_Bump, i.uv2));
//Based on the ambient light
float3 lightColor = UNITY_LIGHTMODEL_AMBIENT.xyz;
//Work out this distance of the light
float lengthSq = dot(i.lightDirection, i.lightDirection);
//Fix the attenuation based on the distance
float atten = 1.0 / (1.0 + lengthSq);
//Angle to the light
float diff = saturate (dot (n, normalize(i.lightDirection)));
//Perform our toon light mapping
diff = tex2D(_Ramp, float2(diff, 0.5));
//Update the colour
lightColor += _LightColor0.rgb * (diff * atten);
//Product the final color
c.rgb = lightColor * c.rgb * 2;
return c;
}
ENDCG
}
}
FallBack "Diffuse"
}
