private static unsafe extern int D3DXLoadSurfaceFromMemory(
void* pDestSurface,
void* pDestPalette,
RECT* pDestRect,
void* pSrcMemory,
D3DFORMAT srcFormat,
uint srcPitch,
void* pSrcPalette,
RECT* pSrcRect,
D3DX_FILTER filter,
uint colorKey
);
/// <summary>
/// Copies pixels from an address in memory into a mip level of Texture2D, converting them from one format to another if necessary.
/// </summary>
/// <param name="texture">The texture to copy to.</param>
/// <param name="level">The index into the texture's mip levels.</param>
/// <param name="pData">The address of the pixel data.</param>
/// <param name="updateRect">The dimension and position of the rectangle to paint.</param>
/// <param name="pitch">The number of bytes occupied by a single row of the pixel data (including padding at the end of rows).</param>
/// <param name="pixelFormat">The format of the pixel data.</param>
public static unsafe void SetData(
this Texture2D texture, int level, void* pData,
Rectangle updateRect, uint pitch,
D3DFORMAT pixelFormat
)
{
var rect = new RECT
{
Top = updateRect.Y,
Left = updateRect.X,
Right = updateRect.Width,
Bottom = updateRect.Height
};
void* pSurface = GetSurfaceLevel(texture, level);
try
{
var rv = D3DXLoadSurfaceFromMemory(pSurface, null, &rect, pData, pixelFormat, pitch, null, &rect, D3DX_FILTER.NONE, 0);
if (rv != 0)
throw new COMException("D3DXLoadSurfaceFromMemory failed", rv);
}
finally
{
Marshal.Release(new IntPtr(pSurface));
}
}