From f78c6603d2ddff1461ad626e38edc9803ca390b6 Mon Sep 17 00:00:00 2001
From: Daniel van Vugt <daniel.van.vugt@canonical.com>
Date: Tue, 23 Jul 2024 16:58:05 +0800
Subject: [PATCH] backends/native: Add set/get_damage functions to
 MetaFrameNative

(cherry picked from commit 90f5ce55a9b6a3addf82a32a0ea920aa5c969c07)
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441>
Signed-off-by: Mingi Sung <sungmg@saltyming.net>
---
 src/backends/native/meta-frame-native.c | 31 +++++++++++++++++++++++++
 src/backends/native/meta-frame-native.h |  9 +++++++
 2 files changed, 40 insertions(+)

diff --git a/src/backends/native/meta-frame-native.c b/src/backends/native/meta-frame-native.c
index 70461be32..8dc9dba9b 100644
--- a/src/backends/native/meta-frame-native.c
+++ b/src/backends/native/meta-frame-native.c
@@ -31,6 +31,11 @@ struct _MetaFrameNative
   CoglScanout *scanout;
 
   MetaKmsUpdate *kms_update;
+
+  struct {
+    int n_rectangles;
+    int *rectangles;  /* 4 x n_rectangles */
+  } damage;
 };
 
 static void
@@ -38,6 +43,7 @@ meta_frame_native_release (ClutterFrame *frame)
 {
   MetaFrameNative *frame_native = meta_frame_native_from_frame (frame);
 
+  g_clear_pointer (&frame_native->damage.rectangles, g_free);
   g_clear_object (&frame_native->buffer);
   g_clear_object (&frame_native->scanout);
 
@@ -108,3 +114,28 @@ meta_frame_native_get_scanout (MetaFrameNative *frame_native)
 {
   return frame_native->scanout;
 }
+
+void
+meta_frame_native_set_damage (MetaFrameNative *frame_native,
+                              const int       *rectangles,
+                              int              n_rectangles)
+{
+  size_t rectangles_size;
+
+  rectangles_size = n_rectangles * 4 * sizeof (int);
+
+  frame_native->damage.rectangles =
+    g_realloc (frame_native->damage.rectangles, rectangles_size);
+  memcpy (frame_native->damage.rectangles, rectangles, rectangles_size);
+  frame_native->damage.n_rectangles = n_rectangles;
+}
+
+int
+meta_frame_native_get_damage (MetaFrameNative  *frame_native,
+                              int             **rectangles)
+{
+  if (rectangles)
+    *rectangles = frame_native->damage.rectangles;
+
+  return frame_native->damage.n_rectangles;
+}
diff --git a/src/backends/native/meta-frame-native.h b/src/backends/native/meta-frame-native.h
index 3df4eff78..84bd43b8c 100644
--- a/src/backends/native/meta-frame-native.h
+++ b/src/backends/native/meta-frame-native.h
@@ -47,3 +47,12 @@ void meta_frame_native_set_scanout (MetaFrameNative *frame_native,
                                     CoglScanout     *scanout);
 
 CoglScanout * meta_frame_native_get_scanout (MetaFrameNative *frame_native);
+
+void
+meta_frame_native_set_damage (MetaFrameNative *frame_native,
+                              const int       *rectangles,
+                              int              n_rectangles);
+
+int
+meta_frame_native_get_damage (MetaFrameNative  *frame_native,
+                              int             **rectangles);