public static uint PackSNorm(uint bitmask, float value)
{
float max = (float)(bitmask >> 1);
value *= max;
return((uint)(int)PackUtils.ClampAndRound(value, -max, max) & bitmask);
}
public static uint PackSigned(uint bitmask, float value)
{
float max = (float)(bitmask >> 1);
float min = (float)(-(double)max - 1.0);
return((uint)(int)PackUtils.ClampAndRound(value, min, max) & bitmask);
}
/// <summary>
/// Expands the packed representation into a Vector4.
/// </summary>
public Vector4 ToVector4()
{
Vector4 vector4;
vector4.X = PackUtils.UnpackSNorm((uint)byte.MaxValue, this.packedValue);
vector4.Y = PackUtils.UnpackSNorm((uint)byte.MaxValue, this.packedValue >> 8);
vector4.Z = PackUtils.UnpackSNorm((uint)byte.MaxValue, this.packedValue >> 16);
vector4.W = PackUtils.UnpackSNorm((uint)byte.MaxValue, this.packedValue >> 24);
return(vector4);
}
public static uint PackUNorm(float bitmask, float value)
{
value *= bitmask;
return((uint)PackUtils.ClampAndRound(value, 0.0f, bitmask));
}
public static uint PackUnsigned(float bitmask, float value)
{
return((uint)PackUtils.ClampAndRound(value, 0.0f, bitmask));
}
private static uint PackHelper(float vectorX, float vectorY, float vectorZ, float vectorW)
{
return(PackUtils.PackSNorm((uint)byte.MaxValue, vectorX) | PackUtils.PackSNorm((uint)byte.MaxValue, vectorY) << 8 | PackUtils.PackSNorm((uint)byte.MaxValue, vectorZ) << 16 | PackUtils.PackSNorm((uint)byte.MaxValue, vectorW) << 24);
}
