diff options
Diffstat (limited to 'src/mesa/drivers/dri/common/vblank.c')
-rw-r--r-- | src/mesa/drivers/dri/common/vblank.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/vblank.c b/src/mesa/drivers/dri/common/vblank.c index 9c219ea37d..e7ed545f13 100644 --- a/src/mesa/drivers/dri/common/vblank.c +++ b/src/mesa/drivers/dri/common/vblank.c @@ -292,6 +292,27 @@ driGetVBlankInterval( const __DRIdrawablePrivate *priv, GLuint flags ) /****************************************************************************/ /** + * Returns the current vertical blank sequence number of the given drawable. + */ + +void +driGetCurrentVBlank( const __DRIdrawablePrivate *priv, GLuint flags, + GLuint *vbl_seq ) +{ + drmVBlank vbl; + + vbl.request.type = DRM_VBLANK_RELATIVE; + if ( flags & VBLANK_FLAG_SECONDARY ) { + vbl.request.type |= DRM_VBLANK_SECONDARY; + } + vbl.request.sequence = 0; + + (void) do_wait( &vbl, vbl_seq, priv->driScreenPriv->fd ); +} + + +/****************************************************************************/ +/** * Waits for the vertical blank for use with glXSwapBuffers. * * \param vbl_seq Vertical blank sequence number (MSC) after the last buffer |