/// <summary>
/// Function to build the description structure used to create the buffer.
/// </summary>
/// <param name="bufferInfo">The parameters used to create the buffer.</param>
/// <returns>A new D3D 11 buffer description used to create the buffer.</returns>
private D3D11.BufferDescription BuildBufferDesc(GorgonBufferInfo bufferInfo)
{
D3D11.BindFlags bindFlags = GetBindingFlags(bufferInfo.Binding);
var resourceUsage = (D3D11.ResourceUsage)bufferInfo.Usage;
// Round up to the nearest multiple of 4.
bufferInfo.StructureSize = (bufferInfo.StructureSize + 3) & ~3;
if (bufferInfo.StructureSize > 2048)
{
throw new GorgonException(GorgonResult.CannotCreate, string.Format(Resources.GORGFX_ERR_BUFFER_STRUCTURE_SIZE_INVALID, bufferInfo.StructureSize));
}
if (bufferInfo.AllowRawView)
{
// Raw buffers use 4 byte alignment.
bufferInfo.SizeInBytes = (bufferInfo.SizeInBytes + 3) & ~3;
}
ValidateBufferBindings(bufferInfo.Usage, bufferInfo.Binding, bufferInfo.StructureSize);
D3D11.ResourceOptionFlags options = D3D11.ResourceOptionFlags.None;
if (bufferInfo.IndirectArgs)
{
options |= D3D11.ResourceOptionFlags.DrawIndirectArguments;
}
if (bufferInfo.AllowRawView)
{
options |= D3D11.ResourceOptionFlags.BufferAllowRawViews;
}
if (bufferInfo.StructureSize > 0)
{
options |= D3D11.ResourceOptionFlags.BufferStructured;
}
return(new D3D11.BufferDescription
{
SizeInBytes = bufferInfo.SizeInBytes,
Usage = resourceUsage,
BindFlags = bindFlags,
OptionFlags = options,
CpuAccessFlags = GetCpuFlags(bufferInfo.Usage, bufferInfo.Binding, bufferInfo.IndirectArgs),
StructureByteStride = bufferInfo.StructureSize
});
}
public static Direct3D11.Texture2D CreateTexture2D(this Direct3D11.Device device,
int w, int h,
Direct3D11.BindFlags flags = Direct3D11.BindFlags.RenderTarget | Direct3D11.BindFlags.ShaderResource,
Format format = Format.B8G8R8A8_UNorm,
Direct3D11.ResourceOptionFlags options = Direct3D11.ResourceOptionFlags.Shared)
{
var colordesc = new Direct3D11.Texture2DDescription
{
BindFlags = flags,
Format = format,
Width = w,
Height = h,
MipLevels = 1,
SampleDescription = new SampleDescription(1, 0),
Usage = Direct3D11.ResourceUsage.Default,
OptionFlags = options,
CpuAccessFlags = Direct3D11.CpuAccessFlags.None,
ArraySize = 1
};
return(new Direct3D11.Texture2D(device, colordesc));
}
