st/vdpau: only send buffers with B8G8R8A8 format to X

PresentPixmap only works if the pixmap depth matches with the
window depth, otherwise it returns a BadMatch protocol error.
Even if the depths match, the result won't look correctly
if the VDPAU RGB component order doesn't match the X11 one so
we only allow the X11 format.
For other buffers we copy them to a buffer which is send to X.

v2: only send buffers with format VDP_RGBA_FORMAT_B8G8R8A8
v3: reword commit message
v4: add comment explaining the code

Signed-off-by: Nayan Deshmukh <[email protected]>
Reviewed-by: Christian König <[email protected]>

3 files changed, 11 insertions, 3 deletions

diff --git a/src/gallium/state_trackers/vdpau/output.c b/src/gallium/state_trackers/vdpau/output.c
index 98a8011f0a6..8b26f7a81ab 100644
--- a/src/gallium/state_trackers/vdpau/output.c
+++ b/src/gallium/state_trackers/vdpau/output.c
@@ -75,6 +75,13 @@ vlVdpOutputSurfaceCreate(VdpDevice device,
 
    memset(&res_tmpl, 0, sizeof(res_tmpl));
 
+   /*
+    * The output won't look correctly when this buffer is send to X,
+    * if the VDPAU RGB component order doesn't match the X11 one so
+    * we only allow the X11 format
+    */
+   vlsurface->send_to_X = rgba_format == VDP_RGBA_FORMAT_B8G8R8A8;
+
    res_tmpl.target = PIPE_TEXTURE_2D;
    res_tmpl.format = VdpFormatRGBAToPipe(rgba_format);
    res_tmpl.width0 = width;
diff --git a/src/gallium/state_trackers/vdpau/presentation.c b/src/gallium/state_trackers/vdpau/presentation.c
index d4793692f90..78cafc81afe 100644
--- a/src/gallium/state_trackers/vdpau/presentation.c
+++ b/src/gallium/state_trackers/vdpau/presentation.c
@@ -231,7 +231,7 @@ vlVdpPresentationQueueDisplay(VdpPresentationQueue presentation_queue,
    vscreen = pq->device->vscreen;
 
    pipe_mutex_lock(pq->device->mutex);
-   if (vscreen->set_back_texture_from_output)
+   if (vscreen->set_back_texture_from_output && surf->send_to_X)
       vscreen->set_back_texture_from_output(vscreen, surf->surface->texture, clip_width, clip_height);
    tex = vscreen->texture_from_drawable(vscreen, (void *)pq->drawable);
    if (!tex) {
@@ -239,7 +239,7 @@ vlVdpPresentationQueueDisplay(VdpPresentationQueue presentation_queue,
       return VDP_STATUS_INVALID_HANDLE;
    }
 
-   if (!vscreen->set_back_texture_from_output) {
+   if (!vscreen->set_back_texture_from_output || !surf->send_to_X) {
       dirty_area = vscreen->get_dirty_area(vscreen);
 
       memset(&surf_templ, 0, sizeof(surf_templ));
@@ -289,7 +289,7 @@ vlVdpPresentationQueueDisplay(VdpPresentationQueue presentation_queue,
       framenum++;
    }
 
-   if (!vscreen->set_back_texture_from_output) {
+   if (!vscreen->set_back_texture_from_output || !surf->send_to_X) {
       pipe_resource_reference(&tex, NULL);
       pipe_surface_reference(&surf_draw, NULL);
    }
diff --git a/src/gallium/state_trackers/vdpau/vdpau_private.h b/src/gallium/state_trackers/vdpau/vdpau_private.h
index 490a0bd308a..8356608f6d7 100644
--- a/src/gallium/state_trackers/vdpau/vdpau_private.h
+++ b/src/gallium/state_trackers/vdpau/vdpau_private.h
@@ -415,6 +415,7 @@ typedef struct
    struct pipe_fence_handle *fence;
    struct vl_compositor_state cstate;
    struct u_rect dirty_area;
+   bool send_to_X;
 } vlVdpOutputSurface;
 
 typedef struct