유니티 쉐이더 게임 관련

 

 

 

#define _BoardSize 8.0

int2 GetPiecePos(float2 _pos)
{
    return int2(min(_BoardSize-1, _pos.x * _BoardSize), min(_BoardSize-1, _pos.y * _BoardSize));
}
fixed2 GetUvPos(int2 _pos)
{
   return fixed2((half)_pos.x / _BoardSize + (0.5 / _BoardSize), (half)_pos.y / _BoardSize + (0.5 / _BoardSize));
}


int2 piecePos = GetPiecePos(i.uv);
fixed2 uvPos = GetUvPos(piecePos);
col.r = uvPos.x * 0.1;
col.g = uvPos.y * 0.1;
col.a = 1;
return col;

결과

 

 

 

#define _BoardSize 8.0

int2 GetPiecePos(float2 _pos)
{
    return int2(min(_BoardSize-1, _pos.x * _BoardSize), min(_BoardSize-1, _pos.y * _BoardSize));
}
            
int2 LenPos(int len, int angle)
{

    int2 _pos = int2(0, 0);
    switch (angle)
    {
    case 0:
        _pos.x = len;
        _pos.y = 0;
        break;
    case 45:
        _pos.x = len;
        _pos.y = len;
        break;
    case 90:
        _pos.x = 0;
        _pos.y = len;
        break;
    case 135:
        _pos.x = -len;
        _pos.y = len;
        break;
    case 180:
        _pos.x = -len;
        _pos.y = 0;
        break;
    case 225:
        _pos.x = -len;
        _pos.y = -len;
        break;
    case 270:
        _pos.x = 0;
        _pos.y = -len;
        break;
    case 315:
        _pos.x = len;
        _pos.y = -len;
        break;
    }
    return _pos;
}



int2 piecePos = GetPiecePos(i.uv);

int angle = piecePos.y * 45;
col.r = 0.5+(float2)LenPos(piecePos.x, angle).x * 0.05;
col.g = 0.5 + (float2)LenPos(piecePos.x, angle).y * 0.05;
col.b = 0.5;
col.a = 1;
return col;

결과

아름다운 무지개가 나왔다

Hue가 어째서 360도의 각도를 지니는지 알수있는 부분

 

int2 LenPos(int len, int angle)
{

    int2 _pos = int2(0, 0);
    if (angle == 0)
    {
        _pos.x = len;
        _pos.y = 0;
    }
    else if (angle == 45)
    {
        _pos.x = len;
        _pos.y = len;
    }
    else if (angle == 90)
    {
        _pos.x = 0;
        _pos.y = len;
    }
    else if (angle == 135)
    {
        _pos.x = -len;
        _pos.y = len;
    }
    else if (angle == 180)
    {
        _pos.x = -len;
        _pos.y = 0;
    }
    else if (angle == 225)
    {
        _pos.x = -len;
        _pos.y = -len;
    }
    else if (angle == 270)
    {
        _pos.x = 0;
        _pos.y = -len;
    }
    else if (angle == 315)
    {
        _pos.x = len;
        _pos.y = -len;
    }
    return _pos;
}

if버전