private WorkingTexture GenerateMipmap(WorkingTexture source)
{
int sx = Mathf.Max(source.Width >> 1, 1);
int sy = Mathf.Max(source.Height >> 1, 1);
WorkingTexture mipmap = new WorkingTexture(Allocator.Persistent, source.Format, sx, sy, source.Linear);
mipmap.Name = source.Name;
for (int y = 0; y < sy; ++y)
{
for (int x = 0; x < sx; ++x)
{
Color color = new Color();
int x1 = Mathf.Min(x * 2 + 0, source.Width - 1);
int x2 = Mathf.Min(x * 2 + 1, source.Width - 1);
int y1 = Mathf.Min(y * 2 + 0, source.Height - 1);
int y2 = Mathf.Min(y * 2 + 1, source.Height - 1);
color += source.GetPixel(x1, y1);
color += source.GetPixel(x1, y2);
color += source.GetPixel(x2, y1);
color += source.GetPixel(x2, y2);
color /= 4;
mipmap.SetPixel(x, y, color);
}
}
return(mipmap);
}
private void RemapTexture(WorkingTexture source, Color min, Color max)
{
for (int y = 0; y < source.Height; ++y)
{
for (int x = 0; x < source.Width; ++x)
{
var color = source.GetPixel(x, y);
color = color * max + min;
source.SetPixel(x, y, color);
}
}
}
private void ApplyTintColor(WorkingTexture texture, Color tintColor)
{
for (int ty = 0; ty < texture.Height; ++ty)
{
for (int tx = 0; tx < texture.Width; ++tx)
{
Color c = texture.GetPixel(tx, ty);
c.r = c.r * tintColor.r;
c.g = c.g * tintColor.g;
c.b = c.b * tintColor.b;
c.a = c.a * tintColor.a;
texture.SetPixel(tx, ty, c);
}
}
}