unity shader實現中槍散紅效果，（參考別人演算法）
阿新 • • 發佈：2019-02-19
Shader"Custom/RedBound2" {
Properties {
_MainTex ("Base (RGB)", 2D) = "white" {}
_Pow ("Pow", Range(7.0,10.0)) = 8.0
}
SubShader {
Tags { "RenderType"="Opaque" }
//LOD200
Pass
{
CGPROGRAM
#pragmavertexvert
#pragmafragmentfrag
#include "UnityCG.cginc"
sampler2D_MainTex;
uniformfloat4_MainTex_ST;
float_Pow;
structv2f
float4pos : POSITION;
//fixed4color : COLOR;
//float4normal : NORMAL;
float2texcoord : TEXCOORD0;
floatamount:TEXCOORD1;
};
v2fvert(appdata_basev)
{
v2fo;
float3nm;
o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
nm = mul (UNITY_MATRIX_IT_MV, float4(v.normal,0)).xyz;
//nm = mul (UNITY_MATRIX_MV, float4(
//mul (UNITY_MATRIX_MVP,v.normal.xyzz).xyz;
nm = normalize(nm);
o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
o.amount = saturate((nm.x*nm.x + nm.y*nm.y - nm.z*nm.z*0.3));
//o.amount = saturate((nm.x*nm.x + nm.y*nm.y));
o.amount =pow(o.amount,_Pow);
returno;
}
fixed4frag(v2fi) : COLOR
{
fixed4ret;
fixed4f4=tex2D(_MainTex,i.texcoord);
ret.rgb=lerp(f4.rgb,fixed3(1,0,0),i.amount);
ret.a=f4.a;
returnret;
}
ENDCG
}
}
}
Properties {
_MainTex ("Base (RGB)", 2D) = "white" {}
_Pow ("Pow", Range(7.0,10.0)) = 8.0
}
SubShader {
Tags { "RenderType"="Opaque" }
//LOD200
Pass
{
CGPROGRAM
#pragmavertexvert
#pragmafragmentfrag
#include "UnityCG.cginc"
sampler2D_MainTex;
uniformfloat4_MainTex_ST;
float_Pow;
structv2f
float4pos : POSITION;
//fixed4color : COLOR;
//float4normal : NORMAL;
float2texcoord : TEXCOORD0;
floatamount:TEXCOORD1;
};
v2fvert(appdata_basev)
{
v2fo;
float3nm;
o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
nm = mul (UNITY_MATRIX_IT_MV, float4(v.normal,0)).xyz;
//nm = mul (UNITY_MATRIX_MV, float4(
//mul (UNITY_MATRIX_MVP,v.normal.xyzz).xyz;
nm = normalize(nm);
o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
o.amount = saturate((nm.x*nm.x + nm.y*nm.y - nm.z*nm.z*0.3));
//o.amount = saturate((nm.x*nm.x + nm.y*nm.y));
o.amount =pow(o.amount,_Pow);
returno;
}
fixed4frag(v2fi) : COLOR
{
fixed4ret;
fixed4f4=tex2D(_MainTex,i.texcoord);
ret.rgb=lerp(f4.rgb,fixed3(1,0,0),i.amount);
ret.a=f4.a;
returnret;
}
ENDCG
}
}
}