st/vdpau: don't try to create video buffer when the format is FORMAT_NONE

Not seen in the wild yet, but seems like a reasonable thing to do.
[suggested by Christian]

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

diff --git a/src/gallium/state_trackers/vdpau/surface.c b/src/gallium/state_trackers/vdpau/surface.c
index ab4d725..8e39d68 100644 (file)
--- a/src/gallium/state_trackers/vdpau/surface.c
+++ b/src/gallium/state_trackers/vdpau/surface.c
@@ -88,7 +88,10 @@ vlVdpVideoSurfaceCreate(VdpDevice device, VdpChromaType chroma_type,
       PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
       PIPE_VIDEO_CAP_PREFERS_INTERLACED
    );
-   p_surf->video_buffer = pipe->create_video_buffer(pipe, &p_surf->templat);
+   if (p_surf->templat.buffer_format != PIPE_FORMAT_NONE)
+      p_surf->video_buffer = pipe->create_video_buffer(pipe, &p_surf->templat);
+
+   /* do not mandate early allocation of a video buffer */
    vlVdpVideoSurfaceClear(p_surf);
    pipe_mutex_unlock(dev->mutex);