/// <summary>
/// Reads the contents of an <see cref="UploadBuffer{T}"/> instance and writes them into a target <see cref="UploadBuffer{T}"/> instance.
/// </summary>
/// <typeparam name="T">The type of items stored on the buffer.</typeparam>
/// <param name="destination">The target <see cref="StructuredBuffer{T}"/> instance to write data to.</param>
/// <param name="source">The input <see cref="UploadBuffer{T}"/> instance to read data from.</param>
/// <param name="sourceOffset">The offset to start reading data from.</param>
/// <param name="destinationOffset">The starting offset within <paramref name="destination"/> to write data to.</param>
/// <param name="count">The number of items to read.</param>
public static void CopyFrom <T>(this StructuredBuffer <T> destination, UploadBuffer <T> source, int sourceOffset, int destinationOffset, int count)
where T : unmanaged
{
Guard.IsNotNull(destination);
Guard.IsNotNull(source);
source.CopyTo(destination, sourceOffset, destinationOffset, count);
}
/// <summary>
/// Reads the contents of an <see cref="UploadBuffer{T}"/> instance and writes them into a target <see cref="UploadBuffer{T}"/> instance.
/// </summary>
/// <typeparam name="T">The type of items stored on the buffer.</typeparam>
/// <param name="destination">The target <see cref="StructuredBuffer{T}"/> instance to write data to.</param>
/// <param name="source">The input <see cref="UploadBuffer{T}"/> instance to read data from.</param>
public static void CopyFrom <T>(this StructuredBuffer <T> destination, UploadBuffer <T> source)
where T : unmanaged
{
Guard.IsNotNull(destination);
Guard.IsNotNull(source);
source.CopyTo(destination, 0, 0, source.Length);
}
public void Allocate_UploadBuffer_Copy_Range(Device device, int destinationOffset, int bufferOffset, int count)
{
using UploadBuffer <int> uploadBuffer = device.Get().AllocateUploadBuffer <int>(4096);
new Random(42).NextBytes(uploadBuffer.Span.AsBytes());
using ReadOnlyBuffer <int> readOnlyBuffer = device.Get().AllocateReadOnlyBuffer <int>(uploadBuffer.Length);
uploadBuffer.CopyTo(readOnlyBuffer, destinationOffset, bufferOffset, count);
int[] result = readOnlyBuffer.ToArray(destinationOffset, count);
Assert.AreEqual(result.Length, count);
Assert.IsTrue(uploadBuffer.Span.Slice(bufferOffset, count).SequenceEqual(result));
}
public void Allocate_UploadBuffer_Copy_Full(Device device)
{
using UploadBuffer <int> uploadBuffer = device.Get().AllocateUploadBuffer <int>(4096);
new Random(42).NextBytes(uploadBuffer.Span.AsBytes());
using ReadOnlyBuffer <int> readOnlyBuffer = device.Get().AllocateReadOnlyBuffer <int>(uploadBuffer.Length);
uploadBuffer.CopyTo(readOnlyBuffer);
int[] result = readOnlyBuffer.ToArray();
Assert.AreEqual(uploadBuffer.Length, result.Length);
Assert.IsTrue(uploadBuffer.Span.SequenceEqual(result));
}