gallium: plumb winsys-drawable-handle through to state tracker

The state trackers need this value so that they can supply it
as the "void *" argument to flush_frontbuffer.

Fixes single-buffer rendering.

2 files changed, 11 insertions, 2 deletions

diff --git a/src/gallium/state_trackers/vega/vg_tracker.c b/src/gallium/state_trackers/vega/vg_tracker.c
index 57d3baad7f..a002e50faf 100644
--- a/src/gallium/state_trackers/vega/vg_tracker.c
+++ b/src/gallium/state_trackers/vega/vg_tracker.c
@@ -376,11 +376,19 @@ void st_unreference_framebuffer(struct st_framebuffer *stfb)
 
 boolean st_make_current(struct vg_context *st,
                         struct st_framebuffer *draw,
-                        struct st_framebuffer *read)
+                        struct st_framebuffer *read,
+                        void *winsys_drawable_handle)
 {
    vg_set_current_context(st);
    if (st) {
       st->draw_buffer = draw;
+
+      /* VG state tracker doesn't seem to do front-buffer rendering
+       * (no calls to flush_frontbuffer).  If it ever did start doing
+       * that, it would need to pass this value down in the
+       * flush_frontbuffer call:
+       */
+      st->pipe->priv = winsys_drawable_handle;
    }
    return VG_TRUE;
 }
diff --git a/src/gallium/state_trackers/vega/vg_tracker.h b/src/gallium/state_trackers/vega/vg_tracker.h
index c1196954a7..165a6b7a33 100644
--- a/src/gallium/state_trackers/vega/vg_tracker.h
+++ b/src/gallium/state_trackers/vega/vg_tracker.h
@@ -101,7 +101,8 @@ void st_unreference_framebuffer(struct st_framebuffer *stfb);
 PUBLIC
 boolean st_make_current(struct vg_context *st,
                         struct st_framebuffer *draw,
-                        struct st_framebuffer *read);
+                        struct st_framebuffer *read,
+                        void *winsys_drawable_handle);
 
 PUBLIC
 struct vg_context *st_get_current(void);