Mesa (master): vl/dri3: implement function for flush frontbuffer

[Leo Liu]

Module: Mesa
Branch: master
Commit: b0bd908284d2b5e6d7c6e3967bedb62f04e1b206
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=b0bd908284d2b5e6d7c6e3967bedb62f04e1b206

Author: Leo Liu <leo....@amd.com>
Date:   Mon Apr 25 14:37:57 2016 -0400

vl/dri3: implement function for flush frontbuffer

Request drawable content in pixmap by calling DRI3 PresentPixmap,
and handle PresentIdleNotify event.

Signed-off-by: Leo Liu <leo....@amd.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com>

---

 src/gallium/auxiliary/vl/vl_winsys_dri3.c | 32 +++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/vl/vl_winsys_dri3.c 
b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
index 63bb408..afab85a 100644
--- a/src/gallium/auxiliary/vl/vl_winsys_dri3.c
+++ b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
@@ -96,7 +96,15 @@ dri3_handle_present_event(struct vl_dri3_screen *scrn,
       break;
    }
    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
-      /* TODO */
+      xcb_present_idle_notify_event_t *ie = (void *) ge;
+      int b;
+      for (b = 0; b < BACK_BUFFER_NUM; b++) {
+         struct vl_dri3_buffer *buf = scrn->back_buffers[b];
+         if (buf && buf->pixmap == ie->pixmap) {
+            buf->busy = false;
+            break;
+         }
+      }
       break;
    }
    }
@@ -310,7 +318,27 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
                           unsigned level, unsigned layer,
                           void *context_private, struct pipe_box *sub_box)
 {
-   /* TODO */
+   struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)context_private;
+   uint32_t options = XCB_PRESENT_OPTION_NONE;
+   struct vl_dri3_buffer *back;
+
+   back = scrn->back_buffers[scrn->cur_back];
+   if (!back)
+       return;
+
+   xshmfence_reset(back->shm_fence);
+   back->busy = true;
+
+   xcb_present_pixmap(scrn->conn,
+                      scrn->drawable,
+                      back->pixmap,
+                      0, 0, 0, 0, 0,
+                      None, None,
+                      back->sync_fence,
+                      options, 0, 0, 0, 0, NULL);
+
+   xcb_flush(scrn->conn);
+
    return;
 }
 

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