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.

1 files changed, 30 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/fbdev/native_fbdev.c b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
index e459402076..728dba3ff4 100644
--- a/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
+++ b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
@@ -137,6 +137,32 @@ fbdev_surface_swap_buffers(struct native_surface *nsurf)
    return ret;
 }
 
+static boolean
+fbdev_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 = fbdev_surface_flush_frontbuffer(nsurf);
+      break;
+   case NATIVE_ATTACHMENT_BACK_LEFT:
+      ret = fbdev_surface_swap_buffers(nsurf);
+      break;
+   default:
+      ret = FALSE;
+      break;
+   }
+
+   return ret;
+}
+
 static void
 fbdev_surface_wait(struct native_surface *nsurf)
 {
@@ -183,6 +209,7 @@ fbdev_display_create_scanout_surface(struct native_display *ndpy,
    fbsurf->base.destroy = fbdev_surface_destroy;
    fbsurf->base.swap_buffers = fbdev_surface_swap_buffers;
    fbsurf->base.flush_frontbuffer = fbdev_surface_flush_frontbuffer;
+   fbsurf->base.present = fbdev_surface_present;
    fbsurf->base.validate = fbdev_surface_validate;
    fbsurf->base.wait = fbdev_surface_wait;
 
@@ -279,6 +306,9 @@ fbdev_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;