public static Vertex FastLerp(Vertex a, Vertex b, float t) => new Vertex
{
point = Vector4.Lerp(a.point, b.point, t),
onePerZ = MathRaster.Lerp(a.onePerZ, b.onePerZ, t),
uv = Vector2.Lerp(a.uv, b.uv, t),
normal = Vector3.Lerp(a.normal, b.normal, t),
color = Color32.Lerp(a.color, b.color, t),
distance2Cam = MathRaster.Lerp(a.distance2Cam, b.distance2Cam, t)
};
public override Intermediate Lerp(Intermediate rhs, float facter)
{
var right = (SampleInterData)rhs;
return(new SampleInterData
{
z_buff = MathRaster.Lerp(z_buff, right.z_buff, facter),
UV = Vector2.Lerp(UV, right.UV, facter),
FragPos = Vector3.Lerp(FragPos, right.FragPos, facter),
Normal = Vector3.Lerp(Normal, right.Normal, facter)
});
}
public override Color32 Shade(Vertex p)
{
var d = (p.distance2Cam / 2f);
var d1 = (int)Math.Floor(d);
var d2 = (int)Math.Ceiling(d);
if (d2 > 8)
{
d2 = 8;
}
if (d1 > 8)
{
d1 = 8;
}
var gray = MathRaster.Lerp(d1 / 9f, d2 / 9f, d - d1);
var c = Color32.Lerp(texture.midmaps[d1].Value(p.uv.X, p.uv.Y, Vector3.One), texture.midmaps[d2].Value(p.uv.X, p.uv.Y, Vector3.One), d - d1);
return(new Color32(0, gray, 0, 1) * c);
return(Color32.Lerp(texture.midmaps[d1].Value(p.uv.X, p.uv.Y, Vector3.One), texture.midmaps[d2].Value(p.uv.X, p.uv.Y, Vector3.One), d - d1));
}
