public BGRA32(BGRP32 value)
{
uint rcpA = value.A == 0 ? 0u : (65536u * 255u) / (uint)value.A;
R = (Byte)((value.PreR * rcpA + 255u) >> 16);
G = (Byte)((value.PreG * rcpA + 255u) >> 16);
B = (Byte)((value.PreB * rcpA + 255u) >> 16);
A = value.A;
}
public BGR24 AlphaBlendWith(BGRP32 src, int opacity)
{
var x = 16384 - opacity; // x before alpha
opacity = opacity * src.A / 255;
var r = (this.R * x + src.R * opacity) / 16384;
var g = (this.G * x + src.G * opacity) / 16384;
var b = (this.B * x + src.B * opacity) / 16384;
return(new BGR24(r, g, b));
}
public RGBA128F(BGRP32 color)
{
this = default;
this.RGBA = new XYZA(color.PreR, color.PreG, color.PreB, color.A) / 255f;
ApplyUnpremul(ref this.RGBA);
}
public Luminance32F(BGRP32 color)
{
L = _FromRGB(color.R, color.G, color.B) * Reciprocal255;
}