/// <summary>
/// Determines a pitched leading dimension.
/// </summary>
/// <typeparam name="T">The element type.</typeparam>
/// <param name="leadingDimension">The size of the leading dimension.</param>
/// <param name="alignmentInBytes">
/// The alignment in bytes of the leading dimension.
/// </param>
/// <returns>The pitched leading dimension.</returns>
public static long GetPitchedLeadingDimension <T>(
long leadingDimension,
int alignmentInBytes)
where T : unmanaged
{
// Validate the byte pitch and the element size
if (alignmentInBytes < 1 || !Utilities.IsPowerOf2(alignmentInBytes))
{
throw new ArgumentOutOfRangeException(
nameof(alignmentInBytes));
}
int elementSize = ArrayView <T> .ElementSize;
if (elementSize > alignmentInBytes || alignmentInBytes % elementSize != 0)
{
throw new ArgumentException(
string.Format(
RuntimeErrorMessages.NotSupportedPitchedAllocation,
nameof(T),
alignmentInBytes));
}
// Ensure a proper alignment of the leading dimension
long unpichtedBytes = leadingDimension * elementSize;
long pitchedBytes = TypeNode.Align(unpichtedBytes, alignmentInBytes);
// Return the pitched dimension
return(pitchedBytes / elementSize);
}
