public static UnorderedAccessView CreateBufferUAV(SharpDX.Direct3D11.Device device, Buffer buffer, UnorderedAccessViewBufferFlags flags = UnorderedAccessViewBufferFlags.None)
{
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription
{
Dimension = UnorderedAccessViewDimension.Buffer,
Buffer = new UnorderedAccessViewDescription.BufferResource { FirstElement = 0 }
};
if ((buffer.Description.OptionFlags & ResourceOptionFlags.BufferAllowRawViews) == ResourceOptionFlags.BufferAllowRawViews)
{
// A raw buffer requires R32_Typeless
uavDesc.Format = Format.R32_Typeless;
uavDesc.Buffer.Flags = UnorderedAccessViewBufferFlags.Raw | flags;
uavDesc.Buffer.ElementCount = buffer.Description.SizeInBytes / 4;
}
else if ((buffer.Description.OptionFlags & ResourceOptionFlags.BufferStructured) == ResourceOptionFlags.BufferStructured)
{
uavDesc.Format = Format.Unknown;
uavDesc.Buffer.Flags = flags;
uavDesc.Buffer.ElementCount = buffer.Description.SizeInBytes / buffer.Description.StructureByteStride;
}
else
{
throw new ArgumentException("Buffer must be raw or structured", "buffer");
}
return new UnorderedAccessView(device, buffer, uavDesc);
}
/// <summary>
/// Создает Аноредеред Асес Вив для Компьюте шейдера из Raw или Структурде буффера.
/// </summary>
/// <param name="device">Устройство которое будет использовать этот буффер</param>
/// <param name="buffer">Буффер из которого нужно созда ан ордерерд асес вию</param>
/// <returns>Ан ордеред асес вью для использования в компьюте шейдере</returns>
public static UnorderedAccessView CreateBufferUAV(SharpDX.Direct3D11.Device device,
SharpDX.Direct3D11.Buffer buffer,
UnorderedAccessViewBufferFlags flags = UnorderedAccessViewBufferFlags.None)
{
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription
{
Dimension = UnorderedAccessViewDimension.Buffer,
Buffer = new UnorderedAccessViewDescription.BufferResource {
FirstElement = 0
}
};
if ((buffer.Description.OptionFlags & ResourceOptionFlags.BufferAllowRawViews) == ResourceOptionFlags.BufferAllowRawViews)
{
// A raw buffer requires R32_Typeless
uavDesc.Format = Format.R32_Typeless;
uavDesc.Buffer.Flags = UnorderedAccessViewBufferFlags.Raw | flags;
uavDesc.Buffer.ElementCount = buffer.Description.SizeInBytes / 4;
}
else if ((buffer.Description.OptionFlags & ResourceOptionFlags.BufferStructured) == ResourceOptionFlags.BufferStructured)
{
uavDesc.Format = Format.Unknown;
uavDesc.Buffer.Flags = flags;
uavDesc.Buffer.ElementCount = buffer.Description.SizeInBytes / buffer.Description.StructureByteStride;
}
else
{
throw new ArgumentException("Buffer must be raw or structured", "buffer");
}
return(new UnorderedAccessView(device, buffer, uavDesc));
}
public static void CreateForBuffer(int formatID, int firstElement, int elementCount, UnorderedAccessViewBufferFlags flags, out UnorderedAccessViewDescription desc)
{
desc = new UnorderedAccessViewDescription
{
Dimension = UnorderedAccessViewDimension.Buffer,
FormatID = formatID,
FirstElement = firstElement,
ElementCount = elementCount,
BufferFlags = flags
};
}
public static UnorderedAccessViewDescription CreateForBuffer(int formatID, int firstElement, int elementCount, UnorderedAccessViewBufferFlags flags)
{
return new UnorderedAccessViewDescription
{
Dimension = UnorderedAccessViewDimension.Buffer,
FormatID = formatID,
FirstElement = firstElement,
ElementCount = elementCount,
BufferFlags = flags
};
}
public static UnorderedAccessView CreateUnorderedAccessView(Device device, Resource resource, Format format, UnorderedAccessViewDimension viewDimension, int firstElement, int numElements, UnorderedAccessViewBufferFlags flags, int mipSlice)
{
UnorderedAccessViewDescription uavd = new UnorderedAccessViewDescription();
uavd.Format = format;
uavd.Dimension = viewDimension;
switch (viewDimension)
{
case UnorderedAccessViewDimension.Texture1D:
uavd.Texture1D.MipSlice = mipSlice;
break;
case UnorderedAccessViewDimension.Texture1DArray:
uavd.Texture1DArray.MipSlice = mipSlice;
uavd.Texture1DArray.ArraySize = numElements;
uavd.Texture1DArray.FirstArraySlice = firstElement;
break;
case UnorderedAccessViewDimension.Texture2D:
uavd.Texture2D.MipSlice = mipSlice;
break;
case UnorderedAccessViewDimension.Texture2DArray:
uavd.Texture2DArray.MipSlice = mipSlice;
uavd.Texture2DArray.ArraySize = numElements;
uavd.Texture2DArray.FirstArraySlice = firstElement;
break;
case UnorderedAccessViewDimension.Texture3D:
uavd.Texture3D.MipSlice = mipSlice;
uavd.Texture3D.WSize = numElements;
uavd.Texture3D.FirstWSlice = firstElement;
break;
case UnorderedAccessViewDimension.Buffer:
uavd.Buffer.ElementCount = numElements;
uavd.Buffer.FirstElement = firstElement;
uavd.Buffer.Flags = flags;
break;
case UnorderedAccessViewDimension.Unknown:
default:
return(null);
}
var uav = new UnorderedAccessView(device, resource, uavd);
return(uav);
}
