/// <summary>
/// Creates a BC1 color table from the 32-bit colors of a block. If the color space
/// contains alpha values, the color table is built according to BC1 1-bit alpha
/// specification.
/// </summary>
private static Color565[] CreateColorTable(Color[] colors)
{
var colorSpace = new ColorSpace(colors);
return(colorSpace.HasAlpha?
BC1ColorTable.CreateFor1BitAlpha(colorSpace.MinColor, colorSpace.MaxColor) :
BC1ColorTable.Create(colorSpace.MaxColor, colorSpace.MinColor));
}
/// <summary>
/// Creates a BC1 color table from two compressed 16-bit reference colors.
/// If the integer value of <paramref name="color0"/> is lower or equal to
/// that of <paramref name="color1"/>, the color table is built according
/// to the 1-bit alpha specification.
/// </summary>
private static Color565[] CreateColorTable(Color565 color0, Color565 color1)
{
return(color0.Value <= color1.Value ?
BC1ColorTable.CreateFor1BitAlpha(color0, color1) :
BC1ColorTable.Create(color0, color1));
}
