unsafe public void CopyPixels(Rectangle sourceArea, long cbStride, long cbBufferSize, IntPtr pbBuffer)
{
source.CopyPixels(sourceArea, cbStride, cbBufferSize, pbBuffer);
Vector4 vb = vec0, vg = vec1, vr = vec2, vdiv = new Vector4(1f / byte.MaxValue);
Vector4 vmin = Vector4.Zero, vmax = new Vector4(byte.MaxValue), vrnd = new Vector4(0.5f);
float fmax = vmax.X;
int chan = channels;
for (int y = 0; y < sourceArea.Height; y++)
{
byte *ip = (byte *)pbBuffer + y * cbStride, ipe = ip + sourceArea.Width * chan;
while (ip < ipe)
{
var v0 = new Vector4(ip[0], ip[1], ip[2], fmax) * vdiv;
float f0 = Vector4.Dot(v0, vb);
float f1 = Vector4.Dot(v0, vg);
float f2 = Vector4.Dot(v0, vr);
v0 = Vector4.Clamp(new Vector4(f0, f1, f2, 0f) * vmax + vrnd, vmin, vmax);
ip[0] = (byte)v0.X;
ip[1] = (byte)v0.Y;
ip[2] = (byte)v0.Z;
ip += chan;
}
}
}
unsafe public void CopyPixels(Rectangle sourceArea, long cbStride, long cbBufferSize, IntPtr pbBuffer)
{
source.CopyPixels(sourceArea, cbStride, cbBufferSize, pbBuffer);
if (format.NumericRepresentation == PixelNumericRepresentation.Float)
{
copyPixelsFloat(sourceArea, cbStride, cbBufferSize, pbBuffer);
}
else if (format.NumericRepresentation == PixelNumericRepresentation.Fixed)
{
copyPixelsFixed(sourceArea, cbStride, cbBufferSize, pbBuffer);
}
else
{
copyPixelsByte(sourceArea, cbStride, cbBufferSize, pbBuffer);
}
}
protected override void CopyPixelsInternal(WICRect prc, uint cbStride, uint cbBufferSize, IntPtr pbBuffer) => realSource.CopyPixels(prc.ToGdiRect(), cbStride, cbBufferSize, pbBuffer);