st/egl: Add native_surface::present callback.

The callback presents the given attachment to the native engine.  It
allows the swap behavior and interval to be controlled.  It will replace
native_surface::flush_frontbuffer and native_surface::swap_buffers
shortly.

2 files changed, 30 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/drm/modeset.c b/src/gallium/state_trackers/egl/drm/modeset.c
index 5ed22f7b9d..453730ffa5 100644
--- a/src/gallium/state_trackers/egl/drm/modeset.c
+++ b/src/gallium/state_trackers/egl/drm/modeset.c
@@ -167,6 +167,32 @@ drm_surface_swap_buffers(struct native_surface *nsurf)
    return TRUE;
 }
 
+static boolean
+drm_surface_present(struct native_surface *nsurf,
+                    enum native_attachment natt,
+                    boolean preserve,
+                    uint swap_interval)
+{
+   boolean ret;
+
+   if (preserve || swap_interval)
+      return FALSE;
+
+   switch (natt) {
+   case NATIVE_ATTACHMENT_FRONT_LEFT:
+      ret = drm_surface_flush_frontbuffer(nsurf);
+      break;
+   case NATIVE_ATTACHMENT_BACK_LEFT:
+      ret = drm_surface_swap_buffers(nsurf);
+      break;
+   default:
+      ret = FALSE;
+      break;
+   }
+
+   return ret;
+}
+
 static void
 drm_surface_wait(struct native_surface *nsurf)
 {
@@ -227,6 +253,7 @@ drm_display_create_surface(struct native_display *ndpy,
    drmsurf->base.destroy = drm_surface_destroy;
    drmsurf->base.swap_buffers = drm_surface_swap_buffers;
    drmsurf->base.flush_frontbuffer = drm_surface_flush_frontbuffer;
+   drmsurf->base.present = drm_surface_present;
    drmsurf->base.validate = drm_surface_validate;
    drmsurf->base.wait = drm_surface_wait;
 
diff --git a/src/gallium/state_trackers/egl/drm/native_drm.c b/src/gallium/state_trackers/egl/drm/native_drm.c
index f6dc558437..21555dcd0e 100644
--- a/src/gallium/state_trackers/egl/drm/native_drm.c
+++ b/src/gallium/state_trackers/egl/drm/native_drm.c
@@ -103,6 +103,9 @@ drm_display_get_param(struct native_display *ndpy,
    int val;
 
    switch (param) {
+   case NATIVE_PARAM_USE_NATIVE_BUFFER:
+   case NATIVE_PARAM_PRESERVE_BUFFER:
+   case NATIVE_PARAM_MAX_SWAP_INTERVAL:
    default:
       val = 0;
       break;