/// <summary>
/// Explicit operator to convert this view into its attached index buffer.
/// </summary>
/// <param name="view">View to convert.</param>
/// <returns>The attached buffer.</returns>
/// <exception cref="System.InvalidCastException">Thrown when the buffer is not a index buffer.</exception>
public static GorgonIndexBuffer ToIndexBuffer(GorgonBufferUnorderedAccessView view)
{
if (view._indexBuffer == null)
{
throw new InvalidCastException(string.Format(Resources.GORGFX_VIEW_RESOURCE_NOT_BUFFER, "index"));
}
return(view._indexBuffer);
}
/// <summary>
/// Function to create/retrieve an unordered access view in the cache.
/// </summary>
/// <param name="format">Format of the unordered access view.</param>
/// <param name="mipSliceElementStart">Mip slice for a texture, element start for a buffer.</param>
/// <param name="arrayIndexElementCount">Array index for a texture, element count for a buffer.</param>
/// <param name="arrayCount">Array count for a texture.</param>
/// <param name="viewType">View type for structured buffers.</param>
/// <param name="isRaw">TRUE for raw views, FALSE for normal.</param>
/// <returns>The cached unordered access view.</returns>
public GorgonUnorderedAccessView GetUnorderedAccessView(BufferFormat format,
int mipSliceElementStart,
int arrayIndexElementCount,
int arrayCount,
UnorderedAccessViewType viewType,
bool isRaw)
{
var key = new ViewKey(format, mipSliceElementStart, arrayIndexElementCount, arrayCount, ((int)viewType) + (isRaw ? 10 : 0));
lock (_syncLock)
{
GorgonUnorderedAccessView result;
if (_unorderedViews.TryGetValue(key, out result))
{
return(result);
}
switch (_resource.ResourceType)
{
case ResourceType.Buffer:
if (_resource is GorgonStructuredBuffer)
{
result = new GorgonStructuredBufferUnorderedAccessView(_resource,
mipSliceElementStart,
arrayIndexElementCount,
viewType);
}
else
{
result = new GorgonBufferUnorderedAccessView(_resource, format, mipSliceElementStart, arrayIndexElementCount, isRaw);
}
break;
case ResourceType.Texture1D:
case ResourceType.Texture2D:
case ResourceType.Texture3D:
result = new GorgonTextureUnorderedAccessView(_resource, format, mipSliceElementStart, arrayIndexElementCount, arrayCount);
break;
}
// This should never happen.
if (result == null)
{
throw new GorgonException(GorgonResult.CannotCreate,
string.Format(Resources.GORGFX_IMAGE_TYPE_INVALID, _resource.ResourceType));
}
result.Initialize();
_unorderedViews.Add(key, result);
return(result);
}
}