Revert to double computations in ColorRGB9e5

Author: ds5678

AssetRipper.TextureDecoder/Rgb/Formats/ColorRGB9e5.cs

@@ -4,7 +4,7 @@
 	/// 9 bits each for RGB and 5 bits for an exponent
 	/// </summary>
 	public partial struct ColorRGB9e5 : IColor<double>
-	{
+	{
 		private uint bits;
 
 		public double R
@@ -54,19 +54,19 @@ public readonly void GetChannels(out double r, out double g, out double b, out d
 		}
 
 		[MethodImpl(OptimizationConstants.AggressiveInliningAndOptimization)]
-		public void SetChannels(double r, double g, double b, double a)
-		{
-			SetChannels(r, g, b);
-		}
-
+		public void SetChannels(double r, double g, double b, double a)
+		{
+			SetChannels(r, g, b);
+		}
+
 		[MethodImpl(OptimizationConstants.AggressiveInliningAndOptimization)]
 		public void SetChannels(double r, double g, double b)
 		{
 			int exponent = CalculateExponent(r, g, b);
-			decimal scale = (decimal)double.Pow(2, exponent);
-			uint rBits = (uint)((decimal)r / scale) & ChannelBitMask;
-			uint gBits = (uint)((decimal)g / scale) & ChannelBitMask;
-			uint bBits = (uint)((decimal)b / scale) & ChannelBitMask;
+			double scale = double.Pow(2, exponent);
+			uint rBits = (uint)(r / scale) & ChannelBitMask;
+			uint gBits = (uint)(g / scale) & ChannelBitMask;
+			uint bBits = (uint)(b / scale) & ChannelBitMask;
 			uint exponentBits = unchecked((uint)(exponent + 24));
 			bits = (exponentBits << ExponentOffset) | (bBits << BlueOffset) | (gBits << GreenOffset) | (rBits << RedOffset);
 		}
@@ -86,12 +86,12 @@ private static int CalculateExponent(double r, double g, double b)
 			double maxChannel = double.Max(r, double.Max(g, b));
 			double minExponent = double.Log2(maxChannel / ChannelBitMask);
 			return (int)double.Ceiling(minExponent);
-		}
-
-		private const int ChannelBitMask = 0x1FF;
-		private const int RedOffset = 0;
-		private const int GreenOffset = 9;
-		private const int BlueOffset = 18;
+		}
+
+		private const int ChannelBitMask = 0x1FF;
+		private const int RedOffset = 0;
+		private const int GreenOffset = 9;
+		private const int BlueOffset = 18;
 		private const int ExponentOffset = 27;
 	}
 }