public static void Shuffle4ChannelReduce(
ref ReadOnlySpan <byte> source,
ref Span <byte> dest,
byte control)
{
if (Avx2.IsSupported || Ssse3.IsSupported)
{
int remainder = Avx2.IsSupported
? ImageMaths.ModuloP2(source.Length, Vector256 <byte> .Count)
: ImageMaths.ModuloP2(source.Length, Vector128 <byte> .Count);
int adjustedCount = source.Length - remainder;
if (adjustedCount > 0)
{
Shuffle4Channel(
source.Slice(0, adjustedCount),
dest.Slice(0, adjustedCount),
control);
source = source.Slice(adjustedCount);
dest = dest.Slice(adjustedCount);
}
}
}
internal static void NormalizedFloatToByteSaturateReduce(
ref ReadOnlySpan <float> source,
ref Span <byte> dest)
{
DebugGuard.IsTrue(source.Length == dest.Length, nameof(source), "Input spans must be of same length!");
if (Avx2.IsSupported)
{
int remainder = ImageMaths.ModuloP2(source.Length, Vector <byte> .Count);
int adjustedCount = source.Length - remainder;
if (adjustedCount > 0)
{
NormalizedFloatToByteSaturate(
source.Slice(0, adjustedCount),
dest.Slice(0, adjustedCount));
source = source.Slice(adjustedCount);
dest = dest.Slice(adjustedCount);
}
}
}
internal static void BulkConvertByteToNormalizedFloatReduce(
ref ReadOnlySpan <byte> source,
ref Span <float> dest)
{
DebugGuard.IsTrue(source.Length == dest.Length, nameof(source), "Input spans must be of same length!");
if (!IsAvailable)
{
return;
}
int remainder = ImageMaths.ModuloP2(source.Length, Vector <byte> .Count);
int adjustedCount = source.Length - remainder;
if (adjustedCount > 0)
{
BulkConvertByteToNormalizedFloat(source.Slice(0, adjustedCount), dest.Slice(0, adjustedCount));
source = source.Slice(adjustedCount);
dest = dest.Slice(adjustedCount);
}
}