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Shader "Custom/ShaderForTest2"
{
?? ?Properties
?? ?{
?? ??? ?_MainTex("Main Texture", 2D) = "white"{}?? ???
?? ??? ?_EdgeAlphaThreshold("Edge Alpha Threshold", Float) = 1.0?? ????
?? ??? ?_EdgeColor("Edge Color", Color) = (0,0,0,1)?? ??? ??? ???
?? ??? ?_EdgeDampRate("Edge Damp Rate", Float) = 2?? ??? ??? ???
?? ??? ?_OriginAlphaThreshold("OriginAlphaThreshold", range(0.1, 1)) = 0.2???
?? ??? ?[Toggle(_ShowOutline)] _ShowOutline ("Show Outline", Int) = 0?? ?
?
?? ??? ?_InnerGlowWidth("Inner Glow Width", Float) = 0.1?? ??? ??
?? ??? ?_InnerGlowColor("Inner Glow Color", Color) = (0,0,0,1)?? ????
?? ??? ?_InnerGlowAccuracy("Inner Glow Accuracy", Int) = 2?? ??? ????
?? ??? ?_InnerGlowAlphaSumThreshold("Inner Glow Alpha Sum Threshold", Float) = 0.5?? ????
?? ??? ?_InnerGlowLerpRate("Inner Glow Lerp Rate", range(0, 1)) = 0.8?? ??? ????
?
?? ??? ?[Toggle(_ShowInnerGlow)] _ShowInnerGlow ("Show Inner Glow", Int) = 0?? ????
?? ?}
?
?? ?SubShader
?? ?{
?? ??? ?Tags{ "RenderType"="Transparent" "Queue"="Transparent" }
?? ??? ?Blend SrcAlpha OneMinusSrcAlpha
?
?? ??? ?Pass
?? ??? ?{
?? ??? ??? ?Ztest Always Cull Off ZWrite Off
?? ??? ??? ?CGPROGRAM
?? ??? ??? ?#pragma vertex vert
?? ??? ??? ?#pragma fragment frag
?? ??? ??? ?#pragma shader_feature _ShowOutline
?? ??? ??? ?#pragma shader_feature _ShowInnerGlow
?? ??? ??? ?#include "UnityCG.cginc"
?? ??? ??? ?sampler2D _MainTex;
?? ??? ??? ?half4 _MainTex_TexelSize;
?? ??? ??? ?fixed _EdgeAlphaThreshold;
?? ??? ??? ?fixed4 _EdgeColor;
?? ??? ??? ?float _EdgeDampRate;
?? ??? ??? ?float _OriginAlphaThreshold;
?
?? ??? ??? ?float _InnerGlowWidth;
?? ??? ??? ?fixed4 _InnerGlowColor;
?? ??? ??? ?int _InnerGlowAccuracy;
?? ??? ??? ?float _InnerGlowAlphaSumThreshold;
?? ??? ??? ?float _InnerGlowLerpRate;
?
?? ??? ??? ?struct v2f
?? ??? ??? ?{
?? ??? ??? ??? ?float4 vertex : SV_POSITION;
?? ??? ??? ??? ?float2 uv[9] : TEXCOORD0;
?? ??? ??? ?};
?
?? ??? ??? ?half CalculateAlphaSumAround(v2f i)
?? ??? ??? ?{
?? ??? ??? ??? ?half texAlpha;
?? ??? ??? ??? ?half alphaSum = 0;
?? ??? ??? ??? ?for(int it = 0; it < 9; it ++)
?? ??? ??? ??? ?{
?? ??? ??? ??? ??? ?texAlpha = tex2D(_MainTex, i.uv[it]).w;
?? ??? ??? ??? ??? ?alphaSum += texAlpha;
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return alphaSum;
?? ??? ??? ?}
?
?? ??? ??? ?float CalculateCircleSumAlpha(float2 orign, float radiu, int time)
?? ??? ??? ?{
?? ??? ??? ??? ?float sum = 0;
?? ??? ??? ??? ?float perAngle = 360 / time;
?? ??? ??? ??? ?for(int i = 0; i < time; i ++)
?? ??? ??? ??? ?{
?? ??? ??? ??? ??? ?float2 newUV = orign + radiu * float2(cos(perAngle * i), sin(perAngle * i));
?? ??? ??? ??? ??? ?sum += tex2D(_MainTex, newUV).a;
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return sum;
?? ??? ??? ?}
?
?? ??? ??? ?v2f vert(appdata_img v)
?? ??? ??? ?{
?? ??? ??? ??? ?v2f o;
?? ??? ??? ??? ?o.vertex = UnityObjectToClipPos(v.vertex);
?? ??? ??? ??? ?half2 uv = v.texcoord;
?? ??? ??? ??? ?o.uv[0] = uv + _MainTex_TexelSize.xy * half2(-1, -1);
?? ??? ??? ??? ?o.uv[1] = uv + _MainTex_TexelSize.xy * half2(0, -1);
?? ??? ??? ??? ?o.uv[2] = uv + _MainTex_TexelSize.xy * half2(1, -1);
?? ??? ??? ??? ?o.uv[3] = uv + _MainTex_TexelSize.xy * half2(-1, 0);
?? ??? ??? ??? ?o.uv[4] = uv + _MainTex_TexelSize.xy * half2(0, 0);
?? ??? ??? ??? ?o.uv[5] = uv + _MainTex_TexelSize.xy * half2(1, 0);
?? ??? ??? ??? ?o.uv[6] = uv + _MainTex_TexelSize.xy * half2(-1, 1);
?? ??? ??? ??? ?o.uv[7] = uv + _MainTex_TexelSize.xy * half2(0, 1);
?? ??? ??? ??? ?o.uv[8] = uv + _MainTex_TexelSize.xy * half2(1, 1);
?? ??? ??? ??? ?return o;
?? ??? ??? ?}
?
?? ??? ??? ?fixed4 frag(v2f i) : SV_Target
?? ??? ??? ?{
?? ??? ??? ??? ?fixed4 innerGlow = fixed4(0,0,0,0);
?? ??? ??? ??? ?fixed4 outline = fixed4(0,0,0,0);
?? ??? ??? ??? ?fixed4 orignColor = tex2D(_MainTex, i.uv[4]);
?? ??? ??? ??? ?#if defined(_ShowOutline)
?? ??? ??? ??? ??? ?half alphaSum = CalculateAlphaSumAround(i);
?? ??? ??? ??? ??? ?float isNeedShow = alphaSum > _EdgeAlphaThreshold;
?? ??? ??? ??? ??? ?float damp = saturate((alphaSum - _EdgeAlphaThreshold) * _EdgeDampRate);
?? ??? ??? ??? ??? ?float isOrigon = orignColor.a > _OriginAlphaThreshold;
?? ??? ??? ??? ??? ?fixed3 finalColor = lerp(_EdgeColor.rgb, fixed3(0,0,0), isOrigon);
?
?? ??? ??? ??? ??? ?float finalAlpha = isNeedShow * damp * (1 - isOrigon);
?? ??? ??? ??? ??? ?outline = fixed4(finalColor.rgb, finalAlpha);
?? ??? ??? ??? ?#endif
?? ??? ??? ??? ?#if defined(_ShowInnerGlow)
?? ??? ??? ??? ??? ?float alphaCircleSum = CalculateCircleSumAlpha(i.uv[4], _InnerGlowWidth, _InnerGlowAccuracy) / _InnerGlowAccuracy;
?? ??? ??? ??? ??? ?float innerColorAlpha = 0;
?? ??? ??? ??? ??? ?innerColorAlpha = 1 - saturate(alphaCircleSum - _InnerGlowAlphaSumThreshold) / (1 - _InnerGlowAlphaSumThreshold);
?? ??? ??? ??? ??? ?if(orignColor.a <= _OriginAlphaThreshold)
?? ??? ??? ??? ??? ?{
?? ??? ??? ??? ??? ??? ?innerColorAlpha = 0;
?? ??? ??? ??? ??? ?}
?
?? ??? ??? ??? ??? ?fixed3 innerColor = _InnerGlowColor.rgb * innerColorAlpha;
?? ??? ??? ??? ??? ?innerGlow = fixed4(innerColor.rgb, innerColorAlpha);
?? ??? ??? ??? ??? ?//return innerGlow;
?? ??? ??? ??? ?#endif
?? ??? ??? ??? ?#if defined(_ShowOutline)
?? ??? ??? ??? ??? ?float outlineAlphaDiscard = orignColor.a > _OriginAlphaThreshold;
?? ??? ??? ??? ??? ?orignColor = outlineAlphaDiscard * orignColor;
?? ??? ??? ??? ??? ?return lerp(orignColor ,innerGlow * 2, _InnerGlowLerpRate * innerGlow.a) + outline;
?? ??? ??? ??? ?#endif
?
?? ??? ??? ??? ?return lerp(orignColor ,innerGlow * 2, _InnerGlowLerpRate * innerGlow.a);
?? ??? ??? ??? ?//return tex2D(_MainTex, i.uv[4]) + innerGlow + outline;
?? ??? ??? ?}
?
?? ??? ??? ?ENDCG
?? ??? ?}
?? ?}
}
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