Module: wine Branch: master Commit: e8d2febaad934ba64b63dcb46f7257b6a088ec01 URL: https://source.winehq.org/git/wine.git/?a=commit;h=e8d2febaad934ba64b63dcb46... Author: Józef Kucia <jkucia(a)codeweavers.com> Date: Tue Feb 6 11:40:02 2018 +0100 wined3d: Introduce wined3d_bit_scan(). Signed-off-by: Józef Kucia <jkucia(a)codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/wined3d/wined3d_private.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h index 05576cd..3347245 100644 --- a/dlls/wined3d/wined3d_private.h +++ b/dlls/wined3d/wined3d_private.h @@ -4352,6 +4352,13 @@ static inline BOOL is_rasterization_disabled(const struct wined3d_shader *geomet && geometry_shader->u.gs.so_desc.rasterizer_stream_idx == WINED3D_NO_RASTERIZER_STREAM; } +static inline int wined3d_bit_scan(unsigned int *x) +{ + int bit_offset = ffs(*x) - 1; + *x ^= 1u << bit_offset; + return bit_offset; +} + static inline DWORD wined3d_extract_bits(const DWORD *bitstream, unsigned int offset, unsigned int count) {