public void Update(DX11RenderContext context)
{
if (FInvalidate || !FOutput[0].Contains(context) || FElCount.IsChanged || FImmut.IsChanged)
{
if (FOutput[0].Contains(context))
{
if (FOutput[0][context].ElementCount != elcount)
{
FOutput[0].Dispose(context);
}
}
else
{
if (FImmut[0])
{
FInData.Position = 0;
FInData.Read(immutbuf, 0, (int)FInData.Length);
var ds = new DataStream(immutbuf, true, true);
ds.Position = 0;
FOutput[0][context] = new DX11ImmutableStructuredBuffer(context.Device, elcount, elstrides, ds);
}
else
{
FOutput[0][context] = new DX11DynamicStructuredBuffer(context.Device, elcount, elstrides);
}
FValid[0] = true;
}
var b = FOutput[0][context];
try
{
if (FImmut[0])
{
if (FOutput[0][context] != null)
{
FOutput[0][context].Dispose();
}
FInData.Position = 0;
FInData.Read(immutbuf, 0, (int)FInData.Length);
var ds = new DataStream(immutbuf, true, true);
ds.Position = 0;
FOutput[0][context] = new DX11ImmutableStructuredBuffer(context.Device, elcount, elstrides, ds);
}
else
{
var db = context.CurrentDeviceContext.MapSubresource(b.Buffer, MapMode.WriteDiscard,
MapFlags.None);
db.Data.Position = 0;
FInData.Position = 0;
FInData.CopyTo(db.Data);
db.Data.Position = 0;
context.CurrentDeviceContext.UnmapSubresource(b.Buffer, 0);
}
}
catch
{
FValid[0] = false;
}
}
}
/// <summary>
/// Creates a buffer.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="bufferResource">The buffer resource</param>
/// <param name="context">The DX11 context.</param>
/// <param name="count">The required count. Gets blown up to the next power of 2.</param>
/// <param name="bufferToCopy">The buffer to copy in case of immutable buffer type</param>
private void CreateBuffer <T>(DX11Resource <IDX11ReadableStructureBuffer> bufferResource, DX11RenderContext context, int count, T[] bufferToCopy)
where T : struct
{
if (!bufferResource.Contains(context))
{
count = NextUpperPow2(count);
if (this.FBufferType[0] == DX11BufferUploadType.Dynamic)
{
bufferResource[context] = new DX11DynamicStructuredBuffer <T>(context, count);
}
else if (this.FBufferType[0] == DX11BufferUploadType.Default)
{
bufferResource[context] = new DX11CopyDestStructuredBuffer <T>(context, count);
}
else
{
bufferResource[context] = new DX11ImmutableStructuredBuffer <T>(context.Device, bufferToCopy, count);
}
}
}
