public MTAlphaBlend(BinaryReader Reader)
{
//First 4 bytes seems to use bit 0 for something else, so we need to rsh the value by 1?
BlendMode = (PICABlendMode)(Reader.ReadByte() >> 1);
MTBlendFunction ColorSrcFunc = (MTBlendFunction)(Reader.ReadByte() >> 1);
MTBlendFunction ColorDstFunc = (MTBlendFunction)(Reader.ReadByte() >> 1);
PICABlendEquation ColorEqu = (PICABlendEquation)(Reader.ReadByte() >> 1);
MTBlendFunction AlphaSrcFunc = (MTBlendFunction)Reader.ReadByte();
MTBlendFunction AlphaDstFunc = (MTBlendFunction)Reader.ReadByte();
PICABlendEquation AlphaEqu = (PICABlendEquation)Reader.ReadByte();
byte Padding = Reader.ReadByte(); //?
byte[] BufferRW =
{
Reader.ReadByte(),
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte(), //Always 0xf?
Reader.ReadByte() //Always 0xf?
};
BlendFunction.ColorEquation = ColorEqu;
BlendFunction.AlphaEquation = AlphaEqu;
BlendFunction.ColorSrcFunc = ColorSrcFunc.ToPICABlendFunc(false);
BlendFunction.ColorDstFunc = ColorDstFunc.ToPICABlendFunc(false);
BlendFunction.AlphaSrcFunc = ColorSrcFunc.ToPICABlendFunc(true);
BlendFunction.AlphaDstFunc = ColorDstFunc.ToPICABlendFunc(true);
RedWrite = (BufferRW[0] & 1) != 0;
GreenWrite = (BufferRW[0] & 2) != 0;
BlueWrite = (BufferRW[0] & 4) != 0;
AlphaWrite = (BufferRW[0] & 8) != 0;
}
public static PICABlendFunc ToPICABlendFunc(this MTBlendFunction BlendFunc, bool Alpha)
{
switch (BlendFunc)
{
case MTBlendFunction.Zero: return(PICABlendFunc.Zero);
case MTBlendFunction.One: return(PICABlendFunc.One);
case MTBlendFunction.SourceColor: return(PICABlendFunc.SourceColor);
case MTBlendFunction.InvSourceColor: return(PICABlendFunc.OneMinusSourceColor);
case MTBlendFunction.SourceAlpha: return(PICABlendFunc.SourceAlpha);
case MTBlendFunction.InvSourceAlpha: return(PICABlendFunc.OneMinusSourceAlpha);
case MTBlendFunction.DestAlpha: return(PICABlendFunc.DestinationAlpha);
case MTBlendFunction.InvDestAlpha: return(PICABlendFunc.OneMinusDestinationAlpha);
case MTBlendFunction.DestColor: return(PICABlendFunc.DestinationColor);
case MTBlendFunction.InvDestColor: return(PICABlendFunc.OneMinusDestinationColor);
case MTBlendFunction.SourceAlphaSaturate: return(PICABlendFunc.SourceAlphaSaturate);
case MTBlendFunction.BlendFactor:
return(Alpha
? PICABlendFunc.ConstantAlpha
: PICABlendFunc.ConstantColor);
case MTBlendFunction.InvBlendFactor:
return(Alpha
? PICABlendFunc.OneMinusConstantAlpha
: PICABlendFunc.OneMinusConstantColor);
default: throw new ArgumentException("Invalid Blending Function value!");
}
}
