From 220dd47bea588e65416faa2a51663304f8d0a8bc Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Fri, 22 Sep 2023 11:51:24 +0200
Subject: Increase reuse of mmap'ed data by FLTK  Wayland buffer factory

---
 src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H')

diff --git a/src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H b/src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H
index 9991bd99f..8dfef0a97 100644
--- a/src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H
+++ b/src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H
@@ -30,20 +30,22 @@
 class Fl_Wayland_Graphics_Driver : public Fl_Cairo_Graphics_Driver {
 public:
   struct draw_buffer {
+    unsigned char *buffer;
+    cairo_t *cairo_;
     size_t data_size; // of wl_buffer and buffer
     int stride;
     int width;
-    unsigned char *buffer;
-    cairo_t *cairo_;
   };
   struct wld_buffer {
     struct draw_buffer draw_buffer;
+    struct wl_list link; // links all buffers from the same wl_shm_pool
     struct wl_buffer *wl_buffer;
     void *data;
     struct wl_callback *cb;
-    bool draw_buffer_needs_commit;
     struct wl_shm_pool *shm_pool;
-    struct wl_list link; // links all buffers from the same wl_shm_pool
+    bool draw_buffer_needs_commit;
+    bool in_use; // true while being committed
+    bool released; // true after buffer_release() was called
   };
   struct wld_shm_pool_data { // one record attached to each wl_shm_pool object
     char *pool_memory; // start of mmap'ed memory encapsulated by the wl_shm_pool
-- 
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