vec4 FragmentShader(VertexOut vertex, Field <vec4> F, PeriodicField <vec4> Noise)
{
vec4 f = F[Here];
vec4 n = Noise[Here];
return(Noise[Noise[f.xy + n.xy].xy + f.zw]);
}
vec4 FragmentShader(VertexOut vertex, Field <vec4> PreviousLevel, PeriodicField <vec4> Noise)
{
vec4
TL = PreviousLevel[Here],
TR = PreviousLevel[RightOne],
BL = PreviousLevel[UpOne],
BR = PreviousLevel[UpRight];
// Aggregate 4 cells into the containing supercell
return(Noise[Noise[Noise[Noise[TL.xy].xy + TR.xy].xy + BL.xy].xy + BR.xy]);
}
vec4 FragmentShader(VertexOut vertex, Field <data> Data, PeriodicField <vec4> Noise)
{
data d = Data[Here];
if (selected(d))
{
set_select_state(ref d, SelectState.Selected_Show);
}
else
{
set_select_state(ref d, SelectState.NotSelected_NoShow);
}
//d.prior_direction_and_select = 0;
//d = data.Nothing;
vec4 n = Noise[Here];
return(Noise[Noise[d.xy + n.xy].xy + d.zw]);
}
vec4 FragmentShader(VertexOut vertex, PeriodicField <vec4> Random, [Dir.Vals] float dir)
{
return(Random[dir_to_vec(dir)]);
}
vec4 FragmentShader(VertexOut vertex, PeriodicField <vec4> Field)
{
return(Field[Here]);
}
vec4 FragmentShader(VertexOut vertex, PeriodicField <vec4> Random)
{
vec4 val = Random[RightOne];
return(vec(val.y, val.z, val.w, val.x));
}
