[client] egl: implement frame damage display

client/renderers/EGL/damage.h

@@ -0,0 +1,40 @@
+/**
+ * Looking Glass
+ * Copyright (C) 2017-2021 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include "common/KVMFR.h"
+
+struct DesktopDamage
+{
+  int count;
+  FrameDamageRect rects[KVMFR_MAX_DAMAGE_RECTS];
+};
+
+typedef struct EGL_Damage EGL_Damage;
+
+bool egl_damage_init(EGL_Damage ** damage);
+void egl_damage_free(EGL_Damage ** damage);
+
+void egl_damage_setup(EGL_Damage * damage, int width, int height);
+void egl_damage_resize(EGL_Damage * damage, float translateX, float translateY,
+    float scaleX, float scaleY);
+bool egl_damage_render(EGL_Damage * damage, const struct DesktopDamage * data);