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, 19 insertions, 1 deletions

diff --git a/src/gallium/state_trackers/egl/common/native.h b/src/gallium/state_trackers/egl/common/native.h
index 3c3f57e267..446c6b45a9 100644
--- a/src/gallium/state_trackers/egl/common/native.h
+++ b/src/gallium/state_trackers/egl/common/native.h
@@ -54,7 +54,17 @@ enum native_param_type {
     * Return TRUE if window/pixmap surfaces use the buffers of the native
     * types.
     */
-   NATIVE_PARAM_USE_NATIVE_BUFFER
+   NATIVE_PARAM_USE_NATIVE_BUFFER,
+
+   /**
+    * Return TRUE if native_surface::present can preserve the buffer.
+    */
+   NATIVE_PARAM_PRESERVE_BUFFER,
+
+   /**
+    * Return the maximum supported swap interval.
+    */
+   NATIVE_PARAM_MAX_SWAP_INTERVAL
 };
 
 struct native_surface {
@@ -79,6 +89,14 @@ struct native_surface {
    boolean (*flush_frontbuffer)(struct native_surface *nsurf);
 
    /**
+    * Present the given buffer to the native engine.
+    */
+   boolean (*present)(struct native_surface *nsurf,
+                      enum native_attachment natt,
+                      boolean preserve,
+                      uint swap_interval);
+
+   /**
     * Validate the buffers of the surface.  textures, if not NULL, points to an
     * array of size NUM_NATIVE_ATTACHMENTS and the returned textures are owned
     * by the caller.  A sequence number is also returned.  The caller can use