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// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
Shader "Xffect/displacement/screen" {
Properties {
_DispMap ("Displacement Map (RG)", 2D) = "white" {}
_MaskTex ("Mask (R)", 2D) = "white" {}
_DispScrollSpeedX ("Map Scroll Speed X", Float) = 0
_DispScrollSpeedY ("Map Scroll Speed Y", Float) = 0
_StrengthX ("Displacement Strength X", Float) = 1
_StrengthY ("Displacement Strength Y", Float) = -1
}
Category {
Tags { "Queue"="Transparent+99" "RenderType"="Transparent" }
Blend SrcAlpha OneMinusSrcAlpha
//AlphaTest Greater .01
Cull Off Lighting Off ZWrite Off ZTest Always
BindChannels {
Bind "Color", color
Bind "Vertex", vertex
Bind "TexCoord", texcoord
}
SubShader {
GrabPass {
Name "BASE"
Tags { "LightMode" = "Always" }
}
Pass {
Name "BASE"
Tags { "LightMode" = "Always" }
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"
struct appdata_t {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 texcoord: TEXCOORD0;
float2 param : TEXCOORD1;
};
struct v2f {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 uvmain : TEXCOORD0;
float2 param : TEXCOORD1;
float4 uvgrab : TEXCOORD2;
};
uniform half _StrengthX;
uniform half _StrengthY;
uniform float4 _DispMap_ST;
uniform sampler2D _DispMap;
uniform sampler2D _MaskTex;
uniform half _DispScrollSpeedY;
uniform half _DispScrollSpeedX;
v2f vert (appdata_t v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
#if UNITY_UV_STARTS_AT_TOP
float scale = -1.0;
#else
float scale = 1.0;
#endif
o.uvgrab.xy = (float2(o.vertex.x, o.vertex.y*scale) + o.vertex.w) * 0.5;
o.uvgrab.zw = o.vertex.zw;
o.uvmain = TRANSFORM_TEX( v.texcoord, _DispMap );
o.color = v.color;
o.param = v.param;
return o;
}
sampler2D _GrabTexture;
half4 frag( v2f i ) : COLOR
{
//scroll displacement map.
half2 mapoft = half2(_Time.y*_DispScrollSpeedX, _Time.y*_DispScrollSpeedY);
//get displacement color
half4 offsetColor = tex2D(_DispMap, i.uvmain + mapoft);
//get offset
half oftX = offsetColor.r * _StrengthX * i.param.x;
half oftY = offsetColor.g * _StrengthY * i.param.x;
i.uvgrab.x += oftX;
i.uvgrab.y += oftY;
half4 col = tex2Dproj( _GrabTexture, UNITY_PROJ_COORD(i.uvgrab));
//intensity is controlled by particle color.
col.a = i.color.a;
//use mask's red channel to determine visibility.
fixed4 tint = tex2D( _MaskTex, i.uvmain );
col.a *= tint.r;
return col;
}
ENDCG
}
}
// ------------------------------------------------------------------
// Fallback for older cards and Unity non-Pro
SubShader {
Blend SrcAlpha OneMinusSrcAlpha
Pass {
Name "BASE"
SetTexture [_MainTex] { combine texture * primary double, texture * primary }
}
}
}
}
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