st/egl: Add support for drmModeDirtyFB command if found

diff --git a/src/gallium/state_trackers/egl/egl_surface.c b/src/gallium/state_trackers/egl/egl_surface.c
index ed8738e4049562aaa5b47926e08bc1fc1e3b8e84..0cca68dc36f3f91f0dfa0b2785a8084faea63a11 100644 (file)
--- a/src/gallium/state_trackers/egl/egl_surface.c
+++ b/src/gallium/state_trackers/egl/egl_surface.c
@@ -351,6 +351,7 @@ drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface)
 EGLBoolean
 drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
 {
+       struct drm_device *dev = (struct drm_device *)drv;
        struct drm_surface *surf = lookup_drm_surface(draw);
        struct pipe_surface *back_surf;
 
@@ -368,7 +369,6 @@ drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
                st_notify_swapbuffers(surf->stfb);
 
                if (surf->screen) {
-                       surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
                        surf->user->pipe->surface_copy(surf->user->pipe,
                                surf->screen->surface,
                                0, 0,
@@ -376,7 +376,15 @@ drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
                                0, 0,
                                surf->w, surf->h);
                        surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
-                       /* TODO stuff here */
+
+#ifdef DRM_MODE_FEATURE_DIRTYFB
+                       /* TODO query connector property to see if this is needed */
+                       drmModeDirtyFB(dev->drmFD, surf->screen->fbID, NULL, 0);
+#else
+                       (void)dev;
+#endif
+
+                       /* TODO more stuff here */
                }
        }