/// <summary>Create a new global MaterialBuffer bound to the register
/// slot id. All shaders will have access to the data provided via
/// this instance's `Set`.</summary>
/// <param name="registerSlot">Valid values are 3-16. This is the
/// register id that this data will be bound to. In HLSL, you'll see
/// the slot id for '3' indicated like this `: register(b3)`</param>
public MaterialBuffer(int registerSlot)
{
if (!(typeof(T).IsLayoutSequential || typeof(T).IsExplicitLayout))
{
throw new NotSupportedException("MaterialBuffer's data type must have a '[StructLayout(LayoutKind.Sequential)]' attribute for proper copying! Explicit would work too.");
}
int size = Marshal.SizeOf(typeof(T));
_localMemory = Marshal.AllocHGlobal(size);
_inst = NativeAPI.material_buffer_create(registerSlot, size);
if (_inst == IntPtr.Zero)
{
throw new ArgumentException("Bad slot id, see log.");
}
}