You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.2 KiB
Plaintext
63 lines
1.2 KiB
Plaintext
// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
|
|
|
|
Shader "Hidden/Edge Detect X" {
|
|
Properties {
|
|
_MainTex ("Base (RGB)", 2D) = "white" {}
|
|
_Treshold ("Treshold", Float) = 0.2
|
|
}
|
|
|
|
SubShader {
|
|
Pass {
|
|
ZTest Always Cull Off ZWrite Off
|
|
Fog { Mode off }
|
|
|
|
CGPROGRAM
|
|
#pragma vertex vert
|
|
#pragma fragment frag
|
|
#pragma fragmentoption ARB_precision_hint_fastest
|
|
#include "UnityCG.cginc"
|
|
|
|
uniform sampler2D _MainTex;
|
|
uniform float4 _MainTex_TexelSize;
|
|
uniform float _Treshold;
|
|
|
|
struct v2f {
|
|
float4 pos : POSITION;
|
|
float2 uv[3] : TEXCOORD0;
|
|
};
|
|
|
|
v2f vert( appdata_img v )
|
|
{
|
|
v2f o;
|
|
o.pos = UnityObjectToClipPos (v.vertex);
|
|
float2 uv = MultiplyUV( UNITY_MATRIX_TEXTURE0, v.texcoord );
|
|
o.uv[0] = uv;
|
|
o.uv[1] = uv + float2(-_MainTex_TexelSize.x, -_MainTex_TexelSize.y);
|
|
o.uv[2] = uv + float2(+_MainTex_TexelSize.x, -_MainTex_TexelSize.y);
|
|
return o;
|
|
}
|
|
|
|
|
|
half4 frag (v2f i) : COLOR
|
|
{
|
|
half4 original = tex2D(_MainTex, i.uv[0]);
|
|
|
|
// a very simple cross gradient filter
|
|
half3 p1 = original.rgb;
|
|
half3 p2 = tex2D( _MainTex, i.uv[1] ).rgb;
|
|
half3 p3 = tex2D( _MainTex, i.uv[2] ).rgb;
|
|
|
|
half3 diff = p1 * 2 - p2 - p3;
|
|
half len = dot(diff,diff);
|
|
if( len >= _Treshold )
|
|
original.rgb = 0;
|
|
|
|
return original;
|
|
}
|
|
ENDCG
|
|
}
|
|
}
|
|
|
|
Fallback off
|
|
|
|
} |