うーん・・・ pic.twitter.com/JDdcHuJhG7
— 光属性のアルモジナ(VRChat勢） (@arumogina) July 5, 2019
テクスチャバグ的なもの pic.twitter.com/bLyFhcuhcb
— 光属性のアルモジナ(VRChat勢） (@arumogina) July 5, 2019
Shader "Custom/TexBugSquare" {
Properties{
_MainTex("MainTex",2D) = "white"{}
_Height("Height",float) = 1.8//アバターの足裏をゼロとした場合の頭頂部の位置、つまり身長
_Width("Width",float) = 0.3//アバターの中心からの横幅
_Digit("Digit",Range(1,10)) = 1
_ChangeFrec("ChangeFrec",Range(1,10)) = 10 //バグ発生個所の変更頻度
_BugSpd("BugSpd",Range(1,10)) = 3
_MaxBugBoxSize("MaxBugBoxSize",Range(0,0.1)) = 0.05
_MaxNoiseLen("MaxNoiseLen",Range(0,0.5)) = 0.1
_BugMacroNum("BugMacroNum",Range(1,10)) = 10
_BugMicroNum("BugMicroNum",Range(1,50)) = 5
_BugLineColor("BugLineColor",Color) = (1,0,0,1)
_BugColor("BugColor",Color) = (0,0,0,1)
_BugColor2("BugColor2",Color) = (0,0,0,1)
_BugColor3("BugColor3",Color) = (0,0,0,1)
_BugColor4("BugColor4",Color) = (0,0,0,1)
_BugLineWidth("BugLineWidth",Range(0,0.01)) = 0.01
_ObjBoxScale("ObjBoxScale",Float) = 1 //Boxオブジェクト前提
}
SubShader{
//透明部分のあるテクスチャを使う場合
Tags{"Queue" = "Transparent" "RenderType" = "Transparent" "DisableBatching"="true"}
Blend SrcAlpha OneMinusSrcAlpha
GrabPass { "_GPT" }
Pass{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
#include "../ParinNoise.cginc"
struct appdata {
float4 vertex:POSITION;
float4 uv:TEXCOORD0;
};
struct v2f {
float4 pos:SV_POSITION;
float4 uv:TEXCOORD0;
float4 lpos:TEXCOORD1;
float4 gpos:POSITION1;
};
float _PI = 3.141592;
sampler2D _MainTex;
float _Height;
float _Width;
float _Digit;
float _ChangeFrec;
float _MaxBugBoxSize;
float _MaxNoiseLen;
int _BugMicroNum;
float4 _BugLineColor;
float _BugLineWidth;
float _BugSpd;
float _BugMacroNum;
float4 _BugColor;
float4 _BugColor2;
float4 _BugColor3;
float4 _BugColor4;
float _ObjBoxScale;
sampler2D _GPT;
//0~1を返す
float rand(float2 co){
return frac(sin(dot(co.xy ,float2(12.9898,78.233))) * 43758.5453);
}
float noise(float2 xy){
return frac(sin(dot(xy, float2(1000, 1000))) * 2000);
}
float NormalizeX(float x){
return x/_Width;
}
//-1~1に
float NormalizeY(float y){
return y/_Height;
}
float Pow(float val,int times){
float res = 1;
for(int k=0;k<times;k++){
res *= val;
}
return res;
}
float GetNumByTime(float digit,float change_frec){
int d = trunc(digit);
float tm = _Time.y/change_frec*Pow(10,d);
float mx = trunc(tm);//小数部3桁を整数部に移動
return frac(mx/10000);//整数部5桁を小数部に移動しそれのみxに代入
}
//scaleのxyzが同一,ローカル座標の原点(0,0,0)のBox前提
void MaxScreenPos(out float3 mm[2]){
float val = 0.5 * _ObjBoxScale;
float4 ary[8];
ary[0] = UnityObjectToClipPos(float4(val,-val,val,1));
ary[1] = UnityObjectToClipPos(float4(val,val,val,1));
ary[2] = UnityObjectToClipPos(float4(val,val,-val,1));
ary[3] = UnityObjectToClipPos(float4(val,-val,-val,1));
ary[4] = UnityObjectToClipPos(float4(-val,val,val,1));
ary[5] = UnityObjectToClipPos(float4(-val,-val,val,1));
ary[6] = UnityObjectToClipPos(float4(-val,val,-val,1));
ary[7] = UnityObjectToClipPos(float4(-val,-val,-val,1));
float4 gpos_ary[8];
mm[0] = ComputeGrabScreenPos(ary[0]);
mm[1] = mm[0];
[unroll(8)]
for(int k=0;k<8;k++){
float3 t = ComputeGrabScreenPos(ary[k]);
//最大、最小のxyzを見つける
if(t.x < mm[0].x) mm[0].x = t.x;
if(t.y < mm[0].y) mm[0].y = t.y;
if(t.z < mm[0].z) mm[0].z = t.z;
if(t.x > mm[1].x) mm[1].x = t.x;
if(t.y > mm[1].y) mm[1].y = t.y;
if(t.z > mm[1].z) mm[1].z = t.z;
}
}
float2 BugCenterPos(float av){
float rateX = rand(GetNumByTime(_Digit,_ChangeFrec)+av);
float rateY = rand(float2(rateX,rateX));
float3 min_max[2];
MaxScreenPos(min_max);
float x_width = min_max[1].x - min_max[0].x;
float y_width = min_max[1].y - min_max[0].y;
return float2(min_max[0].x+x_width*rateX, min_max[0].y+y_width*rateY);
}
//箱の距離関数
float rectangle(float2 p, float2 size){
return max(abs(p.x) - size.x/_Width, abs(p.y) - size.y/_Height);
}
float4 GetRandColor(float pram){
float time = GetNumByTime(_Digit,_ChangeFrec/_BugSpd);
int k = trunc(rand(float2(time,pram))*10)%4;
float4 colors[4] = {_BugColor,_BugColor2,_BugColor3,_BugColor4};
return colors[k];
}
float GetLengthFromCamera(){
float3 c = _WorldSpaceCameraPos;
float3 cu = mul(unity_ObjectToWorld,float4(0,0,0,1));
return length(cu-c);
}
float GetAspect(){
float4 projectionSpaceUpperRight = float4(1, 1, UNITY_NEAR_CLIP_VALUE, _ProjectionParams.y);
float4 viewSpaceUpperRight = mul(unity_CameraInvProjection, projectionSpaceUpperRight);
return viewSpaceUpperRight.x / viewSpaceUpperRight.y;
}
v2f vert(appdata v){
v2f o;
o.lpos = v.vertex;
o.pos = UnityObjectToClipPos(v.vertex);
o.gpos = ComputeGrabScreenPos(o.pos);
o.uv = v.uv;
return o;
}
float4 frag(v2f i) :SV_Target {
float nx = i.gpos.x;
float ny = i.gpos.y;
int BN = trunc(_BugMacroNum);
for(int j=0;j<trunc(BN);j++){
float2 o_cpos = BugCenterPos(rand(j));
float time = GetNumByTime(_Digit,_ChangeFrec/_BugSpd);
//[unroll(30)]//unroll内の数値は_BugMicroNumに合わせて置き換える
float aspect = GetAspect();
for(int k=0;k<_BugMicroNum;k++){
float2 cpos = o_cpos;
int f = k - k % 2;
//テクスチャバグの四角形の中心
cpos.x = o_cpos.x + (noise(float2(rand(f+0.1+time),rand(f+0.2+time)))-0.5)*2*_MaxNoiseLen;
cpos.y = o_cpos.y + (noise(float2(rand(f+0.3+time),rand(f+0.4+time)))-0.5)*2*_MaxNoiseLen*aspect;
float mx = abs(rand(f+0.5+time) - rand(f+0.6+time))*_MaxBugBoxSize;
//カメラの距離に比例してBoxSizeを縮小
float ActBoxSizeX = _MaxBugBoxSize - mx;
//float ActBoxSizeX = _MaxBugBoxSize;
float my = abs(rand(f+0.7+time) - rand(f+0.8+time))*_MaxBugBoxSize;
float ActBoxSizeY = (_MaxBugBoxSize - my) * aspect;
//float ActBoxSizeY = _MaxBugBoxSize* aspect;
float2 p = float2(cpos.x-nx,cpos.y-ny);
float leng;
leng = rectangle(p,float2(ActBoxSizeX,ActBoxSizeY));
if(leng<0.00001) return GetRandColor(rand(float2(k,j)));
//leng = rectangle(p,float2(ActBoxSizeX+_BugLineWidth,ActBoxSizeY+_BugLineWidth));
//if(leng<0.00001) return _BugLineColor;
}
}
//return tex2D(_MainTex,i.uv);
clip(-1);
return float4(0,0,0,1);
}
ENDCG
}//Pass
}//SubShader
FallBack "Diffuse"
}
ParinNoise.cginc
#include "UnityCG.cginc"
float4 permute(float4 x){
return fmod(34.0 * pow(x, 2) + x, 289.0);
}
float2 fade(float2 t){
return 6.0 * pow(t, 5.0) - 15.0 * pow(t, 4.0) + 10.0 * pow(t, 3.0);
}
float4 taylorInvSqrt(float4 r) {
return 1.79284291400159 - 0.85373472095314 * r;
}
#define DIV_289 0.0034602076124567474048442906
float mod289(float x) {
return x - floor(x * DIV_289) * 289.0;
}
float PerlinNoise2D(float2 P){
float4 Pi = floor(P.xyxy) + float4(0.0, 0.0, 1.0, 1.0);
float4 Pf = frac (P.xyxy) - float4(0.0, 0.0, 1.0,1.0);
float4 ix = Pi.xzxz;
float4 iy = Pi.yyww;
float4 fx = Pf.xzxz;
float4 fy = Pf.yyww;
float4 i = permute(permute(ix) + iy);
float4 gx = frac(i / 41.0) * 2.0 - 1.0 ;
float4 gy = abs(gx) - 0.5 ;
float4 tx = floor(gx + 0.5);
gx = gx - tx;
float2 g00 = float2(gx.x,gy.x);
float2 g10 = float2(gx.y,gy.y);
float2 g01 = float2(gx.z,gy.z);
float2 g11 = float2(gx.w,gy.w);
float4 norm = taylorInvSqrt(float4(dot(g00, g00), dot(g01, g01), dot(g10, g10), dot(g11, g11)));
g00 *= norm.x;
g01 *= norm.y;
g10 *= norm.z;
float n00 = dot(g00, float2(fx.x, fy.x));
float n10 = dot(g10, float2(fx.y, fy.y));
float n01 = dot(g01, float2(fx.z, fy.z));
float n11 = dot(g11, float2(fx.w, fy.w));
float2 fade_xy = fade(Pf.xy);
float2 n_x = lerp(float2(n00, n01), float2(n10, n11), fade_xy.x);
float n_xy = lerp(n_x.x, n_x.y, fade_xy.y);
return 2.3 * n_xy;
}
float GetNoise(float2 xy,float scroll,float size){
xy *= size;
xy += float2(scroll,1);
float ns = PerlinNoise2D(xy) / 2 + 0.5f;
return ns;
}
