public Color32[] ApplyToTexture(Texture2D target, DitherMode mode)
{
var src_pixels = target.GetPixels32();
var out_pixels = new Color32[src_pixels.Length];
for (int y = 0; y < target.height; y++)
{
for (int x = 0; x < target.width; x++)
{
int ofs = x + y * target.width;
Color32 c = src_pixels[ofs];
if (c.a <= 0)
{
out_pixels[ofs] = Color.clear;
continue;
}
byte alpha = c.a;
int First, Second;
GetNearestDitherIndices(c, out First, out Second);
Color32 A = colors[First];
Color32 B = colors[Second];
float Val = ColorFindInterpolation(c, A, B);
var ditherVal = DitherUtils.ColorDither(mode, x, y, Val);
c = ditherVal ? B : A;
Val = (float)alpha / 255.0f;
ditherVal = DitherUtils.ColorDither(mode, x, y, Val);
alpha = (byte)(ditherVal ? 255 : 0);
//Current := ColorGrey(255 * DitherVal);
c = new Color32(c.b, c.g, c.b, alpha);
out_pixels[ofs] = c;
}
}
return(out_pixels);
}
public int[] ApplyToTextureAsIndices(Texture2D target, DitherMode mode)
{
var src_pixels = target.GetPixels32();
var out_indices = new int[src_pixels.Length];
for (int y = 0; y < target.height; y++)
{
for (int x = 0; x < target.width; x++)
{
int ofs = x + y * target.width;
Color32 c = src_pixels[ofs];
if (c.a <= 0)
{
out_indices[ofs] = -1;
continue;
}
byte alpha = c.a;
int First, Second;
GetNearestDitherIndices(c, out First, out Second);
Color32 A = colors[First];
Color32 B = colors[Second];
if (A.Equals(B))
{
out_indices[ofs] = First;
}
else
{
float Val = ColorFindInterpolation(c, A, B);
var ditherVal = DitherUtils.ColorDither(mode, x, y, Val);
out_indices[ofs] = (ditherVal ? Second : First);
}
}
}
return(out_indices);
}