/// <summary>Create a texture with initial content from system RAM, with 1 subresource.</summary>
public static ITexture CreateTexture <T>(this IRenderDevice device, ref TextureDesc desc, T[] array, int stride, string name = null) where T : unmanaged
{
TextureSubResData[] srd = new TextureSubResData[1];
srd[0].Stride = stride;
unsafe
{
fixed(T *sourceData = array)
{
srd[0].pData = (IntPtr)sourceData;
return(device.CreateTexture(ref desc, srd, 1, name));
}
}
}
/// <summary>Overwrite a box of 2D texture with supplied data in system RAM</summary>
public static void updateTexture <T>(this IDeviceContext context, ITexture texture, ReadOnlySpan <T> source, ref CRect destBox) where T : unmanaged
{
CSize boxSize = destBox.size;
Debug.Assert(boxSize.cx * boxSize.cy == source.Length);
TextureSubResData tsrd = new TextureSubResData(false);
tsrd.Stride = Marshal.SizeOf <T>() * boxSize.cx;
Box box = createBox(ref destBox);
unsafe
{
fixed(T *pointer = source)
{
tsrd.pData = (IntPtr)pointer;
context.UpdateTexture(texture, 0, 0, ref box, ref tsrd);
}
}
}
