public static ColorBgra Blend(ColorBgra ca, ColorBgra cb, double blend)
        {
            double num         = 1.0 - blend;
            double num2        = blend;
            double linearLevel = (SrgbGamma.ToLinear(ca.R) * num) + (SrgbGamma.ToLinear(cb.R) * num2);
            double num4        = (SrgbGamma.ToLinear(ca.G) * num) + (SrgbGamma.ToLinear(cb.G) * num2);
            double num5        = (SrgbGamma.ToLinear(ca.B) * num) + (SrgbGamma.ToLinear(cb.B) * num2);
            double num6        = (ca.A * num) + (cb.A * num2);

            return(ColorBgra.FromBgra((byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(num5))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(num4))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(linearLevel))), (byte)(0.5 + num6)));
        }
        public static unsafe ColorBgra Blend(ColorBgra *colors, int count)
        {
            if (count < 0)
            {
                throw new ArgumentOutOfRangeException("count must be 0 or greater");
            }
            if (count == 0)
            {
                return(ColorBgra.Transparent);
            }
            ulong  num  = 0L;
            double num2 = 0.0;

            for (int i = 0; i < count; i++)
            {
                num  += colors[i].A;
                num2 += SrgbGamma.ToLinear(colors[i].A);
            }
            byte   a    = (byte)(0.5 + (((double)num) / ((double)count)));
            double num5 = num2 / ((double)count);

            if (a == 0)
            {
                return(ColorBgra.Transparent);
            }
            double num6 = 0.0;
            double num7 = 0.0;
            double num8 = 0.0;

            for (int j = 0; j < count; j++)
            {
                double num10 = colors[j].A * 1.5378700499807768E-05;
                num7 += SrgbGamma.ToLinear((double)(num10 * colors[j].G));
                num8 += SrgbGamma.ToLinear((double)(num10 * colors[j].R));
            }
            double num11 = (255.0 * count) / ((double)num);
            byte   b     = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num6 / ((double)count))) * num11));
            byte   g     = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num7 / ((double)count))) * num11));
            byte   r     = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num8 / ((double)count))) * num11));

            return(ColorBgra.FromBgra(b, g, r, a));
        }