The top down flag can be specified using negative heights. According to https://msdn.microsoft.com/en-us/library/windows/desktop/dd183376(v=vs.85).aspx: "The height of the bitmap, in pixels. If biHeight is positive, the bitmap is a bottom-up DIB and its origin is the lower-left corner. If biHeight is negative, the bitmap is a top-down DIB and its origin is the upper-left corner." Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx> --- server/spice-bitmap-utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Changes since v3: - add documentation from specifications. diff --git a/server/spice-bitmap-utils.c b/server/spice-bitmap-utils.c index 72a9285..439f05d 100644 --- a/server/spice-bitmap-utils.c +++ b/server/spice-bitmap-utils.c @@ -269,7 +269,7 @@ void dump_bitmap(SpiceBitmap *bitmap) put_32le(&ptr, bitmap_data_offset); put_32le(&ptr, header_size - 14); put_32le(&ptr, bitmap->x); - put_32le(&ptr, bitmap->y); + put_32le(&ptr, bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN ? -bitmap->y : bitmap->y); put_16le(&ptr, 1); // plane put_16le(&ptr, n_pixel_bits); -- 2.7.4 _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel