/// <summary>
/// Read a texture as compressed texture.
/// </summary>
/// <param name="target">A <see cref="glTextureProxyTarget"/> specifying the texture target.</param>
/// <param name="level">The level-of-detail to be read.</param>
/// <param name="offset">The offset into the array bound to <see cref="glBufferTarget.PIXEL_PACK_BUFFER"/>.</param>
public static void GetCompressedTexImage(glTextureProxyTarget target, int level, long offset)
{
if (IntPtr.Size == 4 && ((long)offset >> 32) != 0)
{
throw new ArgumentOutOfRangeException("offset", PlatformErrorString);
}
_GetCompressedTexImage(target, level, (IntPtr)offset);
}
/// <summary>
/// Read a texture as compressed texture.
/// </summary>
/// <param name="target">A <see cref="glTextureProxyTarget"/> specifying the texture target.</param>
/// <param name="level">The level-of-detail to be read.</param>
/// <param name="img">Pointer to the buffer for the returning data.</param>
public static void GetCompressedTexImage(glTextureProxyTarget target, int level, byte[] img)
{
GCHandle hImg = GCHandle.Alloc(img, GCHandleType.Pinned);
try
{
_GetCompressedTexImage(target, level, hImg.AddrOfPinnedObject());
}
finally
{
hImg.Free();
}
}
/// <summary>
/// Read a texture as compressed texture.
/// </summary>
/// <param name="target">A <see cref="glTextureProxyTarget"/> specifying the texture target.</param>
/// <param name="level">The level-of-detail to be read.</param>
/// <param name="offset">The offset into the array bound to <see cref="glBufferTarget.PIXEL_PACK_BUFFER"/>.</param>
public static void GetCompressedTexImage(glTextureProxyTarget target, int level, int offset)
{
_GetCompressedTexImage(target, level, (IntPtr)offset);
}
