update

Init Order: call 'mg_InitTimer' before call 'SystemThreads'
fix a bug: MSG_TIMEOUT for desktop thread was not fired correctly
2026-09-28 16:17:09 +08:00 · 2025-05-27 15:53:44 +08:00 · 2025-05-27 15:45:03 +08:00 · 2025-05-27 14:45:53 +08:00 · 2025-05-27 11:08:55 +08:00 · 2025-05-09 14:02:57 +08:00
107 changed files with 4298 additions and 3469 deletions
@@ -72,7 +72,7 @@ It greatly reduces the size and resource consumption of the entire solution, imp
 [HybridOS] is another large open source project initiated by FMSoft.
 It is an open source operating system designed for embedded/AIoT devices and cloud computing environment.

-HybridOS provides the complete software stack and the app framework based on HVML for embedded systems.
+HybridOS provides the complete software stack and the app framework based on [HVML] for embedded systems.
 You can easily develop your products which has rich functions and excellent expressiveness by using HybridOS.

 In practice, MiniGUI and the software which are used to integrated with GPU constitute the graphics stack of HybridOS.
@@ -85,13 +85,13 @@ The following chart shows the graphics stack of HybridOS:
  -----------------------------------------------
 |               MiniGUI/HVML Apps               |
 |-----------------------------------------------|
- |           |         (Graphics Stack)          |
- |           |              ---------------------|
- |           |              | hiMesa             |
- |           | hiCairo      |  ------------------|
- |           | MiniGUI      |  | EGL for MiniGUI |
- | C++ libs  | hiDRMDrivers |  | GL, GLES, VG    |
- | C libs    | libDRM       |  | GPU drivers     |
+ |          |         (Graphics Stack)           |
+ |          |                --------------------|
+ |          |               |    Mesa-HBD        |
+ |          | Cairo-HBD     |  ------------------|
+ |          | MiniGUI       |  | EGL for MiniGUI |
+ | C++ libs | HBDDRMDrivers |  | GL, GLES, VG    |
+ | C libs   | libDRM        |  | GPU drivers     |
 |-----------------------------------------------|
 |  Linux Kernel                                 |
 |            -----------------------------------|
@@ -102,10 +102,10 @@ The following chart shows the graphics stack of HybridOS:
 As shown in the chart above, the HybridOS graphics stack consists of the following software:

 - `libDRM` provides some user land APIs for Linux Direct Rendering Infrastructure.
- `hiDRMDrivers` contains the drivers (user land drivers, not kernel drivers) for
+- `HBDDRMDrivers` contains the drivers (user land drivers, not kernel drivers) for
   MiniGUI DRM engine. The drivers implement the basic hardware accelerated
   2D graphics operations of various GPUs for MiniGUI.
- `hiMesa` is the Mesa derivative for HybridOS, while Mesa is the open source
+- `Mesa-HBD` is the Mesa derivative for HybridOS, while Mesa is the open source
  implementation of OpenGL and other graphics APIs, including OpenGL ES
  (versions 1, 2, 3), OpenCL, OpenMAX, and Vulkan. It contains the following
  components:
@@ -113,13 +113,17 @@ As shown in the chart above, the HybridOS graphics stack consists of the followi
     graphics APIs.
   + The EGL implementation for MiniGUI platform.
   + The graphics drivers for various GPUs and a software driver called `swrast`.
- `hiCairo` is the Cairo derivative for HybridOS. Cairo is a 2D vector graphics
+- `Cairo-HBD` is the Cairo derivative for HybridOS. Cairo is a 2D vector graphics
  library for Gtk. We provide support for MiniGUI backend in `hiCairo`.

 For more information about HybridOS, please refer to:

 <https://hybridos.fmsoft.cn/>

+For more information about HVML, please refer to:
+
+<https://hvml.fmsoft.cn/> or <https://www.hvml.org>
+
 ### Source Code Repositories

 FMSoft had created the public repositories for MiniGUI Core, MiniGUI
@@ -456,7 +460,7 @@ for examples:

 ## HISTORY

-21 years have pasted since MiniGUI was initially created at
+27 years have pasted since MiniGUI was initially created at
 the end of 1998, and now it becomes much reliable and stable.
 During the past years, many remarkable changes have taken place in
 the MiniGUI project.
@@ -562,13 +566,14 @@ A brief history description of the development progress is listed as follow:
 1. Jan., 2022:     FMSoft released MiniGUI version 5.0.9.
 1. Sep., 2022:     FMSoft released MiniGUI version 5.0.10.
 1. Aug., 2023:     FMSoft released MiniGUI version 5.0.13.
+1. May., 2025:     FMSoft released MiniGUI version 5.0.15.

 ## AUTHORS AND COPYING

 The original author of MiniGUI is Vincent Wei, and now MiniGUI is maintained by FMSoft.
 For more information, please refer to <http://www.fmsoft.cn>.

-Copyright (C) 2002 ~ 2022, Beijing FMSoft Technologies Co., Ltd.  
+Copyright (C) 2002 ~ 2025, Beijing FMSoft Technologies Co., Ltd.  
 Copyright (C) 1998 ~ 2002, Vincent Wei

 This program is free software: you can redistribute it and/or modify
@@ -646,13 +651,12 @@ A: Yes, FMSoft can provide you with guaranteed commercial technical
 [FMSoft Technologies]: https://www.fmsoft.cn
 [FMSoft]: https://www.fmsoft.cn
 [HybridOS Official Site]: https://hybridos.fmsoft.cn
-[MiniGUI Official Site]: https://hvml.fmsoft.cn
+[MiniGUI Official Site]: https://minigui.fmsoft.cn
 [HVML Official Site]: https://hvml.fmsoft.cn
 [Vincent Wei]: https://github.com/VincentWei

-[MiniGUI]: https://github.com/VincentWei/MiniGUI
-[HybridOS]: https://github.com/FMSoftCN/HybridOS
-
+[MiniGUI]: https://github.com/VincentWei
+[HybridOS]: https://github.com/HybridOS2
 [HVML]: https://github.com/HVML
 [PurC]: https://github.com/HVML/PurC
 [xGUI Pro]: https://github.com/HVML/xGUI-Pro
@@ -1,5 +1,7 @@
 # Release Notes

+- [Version 5.0.15](#version-5015)
+   + [What's new in version 5.0.15](#whats-new-in-version-5015)
 - [Version 5.0.13](#version-5013)
   + [What's new in version 5.0.13](#whats-new-in-version-5013)
 - [Version 5.0.12](#version-5012)
@@ -32,6 +34,18 @@
   + [Changes leading to incompatibility](#changes-leading-to-incompatibility)
   + [Deprecated APIs](#deprecated-apis)

+## Version 5.0.15
+
+On May 09, 2025, FMSoft announces the availability of MiniGUI 5.0.15,
+which is an enhancement release with some minor enhancements
+of MiniGUI 5.0.x.
+
+* ENHANCEMENTS:
+   - Optimize NEWGAL engines: `shadow`, `drm`, and `fbcon` for large resolution.
+   - New APIs: `GetWindowSharedSurfaceFD()` and `CreateMemDCFromSharedSurfaceFD()` for compositing schema.
+* CHANGES:
+   - The operations for DRM userland driver changed.
+
 ## Version 5.0.13

 On Aug. 31, 2023, FMSoft announces the availability of MiniGUI 5.0.13,
@@ -1,4 +1,4 @@
-Version 5.0.13 (2023/08/31)
+Version 5.0.15 (2025/05/09)

 This is a minor enhancement and bugfix release of MiniGUI 5.0.x, the stable version.

@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.60)
-AC_INIT(libminigui, 5.0.13)
+AC_INIT(libminigui, 5.0.15)
 AC_CONFIG_SRCDIR(src/main/main.c)

 dnl Set various version strings - taken gratefully from the SDL sources
@@ -16,9 +16,9 @@ dnl Set various version strings - taken gratefully from the SDL sources
 #
 MINIGUI_MAJOR_VERSION=5
 MINIGUI_MINOR_VERSION=0
-MINIGUI_MICRO_VERSION=13
-MINIGUI_INTERFACE_AGE=1
-MINIGUI_BINARY_AGE=3
+MINIGUI_MICRO_VERSION=15
+MINIGUI_INTERFACE_AGE=0
+MINIGUI_BINARY_AGE=0
 MINIGUI_VERSION=$MINIGUI_MAJOR_VERSION.$MINIGUI_MINOR_VERSION.$MINIGUI_MICRO_VERSION

 AC_SUBST(MINIGUI_MAJOR_VERSION)
@@ -62,7 +62,7 @@ dnl ========================================================================
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_DIRENT
-AC_CHECK_HEADERS(limits.h math.h locale.h unistd.h termio.h sys/types.h sys/time.h sys/select.h sys/memfd.h)
+AC_CHECK_HEADERS(limits.h math.h stdatomic.h locale.h unistd.h termio.h sys/types.h sys/time.h sys/select.h sys/memfd.h)

 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -95,7 +95,7 @@ message_string="no"
 osname="unspecified"
 runtime_mode="procs"
 compositing_schema="yes"
-virtual_window="no"
+virtual_window="yes"
 use_shmopen="no"
 mgslice_use_fallback="no"

@@ -1704,12 +1704,12 @@ fi

 CPPFLAGS="$CPPFLAGS -D__MINIGUI_LIB__"

-surface_schema="shared frame buffer"
+surface_schema="shared"
 case "$runtime_mode" in
    sa)
        AC_DEFINE(_MGRM_STANDALONE, 1,
            [Define if build MiniGUI-Standalone])
-        MINIGUI_RUNMODE="sa"
+        MINIGUI_RUNMODE="standalone"
        RUNMODE_LADD="standalone/libstandalone.la"
        RUNMODE_SUBDIRS="standalone"
    ;;
@@ -1717,13 +1717,13 @@ case "$runtime_mode" in
        AC_DEFINE(_MGRM_THREADS, 1,
            [Define if build MiniGUI-Threads])
        CPPFLAGS="$CPPFLAGS -D_REENTRANT"
-        MINIGUI_RUNMODE="ths"
+        MINIGUI_RUNMODE="threads"
        virtual_window="yes"
    ;;
    *)
        AC_DEFINE(_MGRM_PROCESSES, 1,
            [Define if build MiniGUI-Processes])
-        MINIGUI_RUNMODE="procs"
+        MINIGUI_RUNMODE="processes"
        RUNMODE_LADD="server/libserver.la client/libclient.la"
        RUNMODE_SUBDIRS="server client"
        if test "x$compositing_schema" = "xyes"; then
@@ -2664,6 +2664,7 @@ if test "x$no_math" = "xno"; then
 fi

 DEP_LIBS="$DEP_LIBS -lpthread"
+MINIGUI_RUNMODE="$MINIGUI_RUNMODE-${surface_schema}"

 AC_SUBST(VIDEO_SUBDIRS)
 AC_SUBST(VIDEO_DRIVERS)
@@ -55,6 +55,36 @@ wallpaper_pattern_size=full
 # def_compositor_so=
 #}}

+#{{ifdef _MGGAL_SHADOW
+[shadow]
+real_engine=pc_xvfb
+defaultmode=800x600-16bpp
+
+# `cw`: rotating screen clock-wise.
+# `ccw`: rotating screen counter clock-wise.
+# `hflip`: flipping screen horizontally.
+# `vflip`: flipping screen vertically.
+rotate_screen=ccw
+
+# Whether the async. update is enabled.
+# Use `true` or `yes` for enabled, anything else for disabled.
+# Since 5.0.13.
+async_update=yes
+
+# The synchronization interval for the asyn. updater (milli-seconds).
+# This setting is only valid when `async_update` is enabled and
+# the real engine does not provide WaitWBlank method.
+# Since 5.0.13.
+update_interval=15
+
+# The minimal pixels to use the hardware accelerator.
+# If the number of pixels to copy is less than this value,
+# MiniGUI will use the software copy routine to update the real screen,
+# even if the real device provides a hardware accelerator.
+# Since 5.0.13.
+min_pixels_using_hwaccl=4096
+#}}
+
 #{{ifdef _MGGAL_DRM
 [drm]
 defaultmode=1024x768-32bpp
@@ -78,9 +108,21 @@ dpi=96
 # Since 5.0.0.
 double_buffering=true

+# The update interval for the asyn. updater (milli-seconds).
+# This setting is only valid when drmWaitVBlank doesn't work correctly.
+# Since 5.0.13.
+update_interval=15
+
+# The minimal pixels to use the hardware accelerator.
+# If the number of pixels to copy is less than this value,
+# MiniGUI will use the software copy routine to update the real screen,
+# even if the device provides a hardware accelerator.
+# Since 5.0.13.
+min_pixels_using_hwaccl=4096
+
 # The filename of the shared library for the external driver.
 # The equivalent environment variable: MG_GAL_DRM_DRIVER
-exdriver=libhidrmdrivers-0.2.so.0
+exdriver=libdrmdrivers.so
 #}}

 #{{ifdef _MGIAL_SINGLETOUCHKEY
@@ -111,6 +153,16 @@ dpi=96
 # Note that under compositing schema, double buffering is always enabled.
 # Since 5.0.10.
 double_buffering=true
+
+# Whether the async. update is enabled.
+# Use `true` or `yes` for enabled, anything else for disabled.
+# Since 5.0.13.
+async_update=yes
+
+# The update interval for the asyn. updater (milli-seconds).
+# This setting is only valid when drmWaitVBlank doesn't work correctly.
+# Since 5.0.13.
+update_interval=15
 #}}

 #{{ifdef _MGGAL_PCXVFB
@@ -123,13 +175,6 @@ exec_file=/usr/local/bin/gvfb
 [rtos_xvfb]
 defaultmode=800x600-16bpp

-#{{ifdef _MGGAL_SHADOW
-[shadow]
-real_engine=pc_xvfb
-defaultmode=800x600-16bpp
-rotate_screen=ccw
-#}}
-
 #{{ifdef _MGGAL_MLSHADOW
 [mlshadow]
 real_engine=qvfb
@@ -268,6 +268,8 @@ MGUI_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
 #define MG_UNLIKELY(expr) (expr)
 #endif

+#define HAVE(FEATURE) (defined HAVE_##FEATURE && HAVE_##FEATURE)
+
    /**
     * \defgroup endian_info Endianness information
     * @{
@@ -2347,6 +2349,7 @@ int init_minigui_printf (int (*output_char) (int ch),
 #define _ERR_PRINTF(fmt, ...)                   \
    do {                                        \
        TCS_RED (stderr);                       \
+        fprintf (stderr, "%s: ", __FUNCTION__); \
        fprintf (stderr, fmt, ##__VA_ARGS__);   \
        TCS_NONE (stderr);                      \
    } while (0)
@@ -456,6 +456,45 @@ MG_EXPORT void GUIAPI MiniGUIPanic (int exitcode);
     * @{
     */

+/**
+ * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_id)
+ * \brief Joins to a layer and returns the client identifier if success.
+ *
+ * This function should be called by clients before calling any other MiniGUI
+ * functions. You can call \a GetLayerInfo to get the layer information.
+ * If the layer to be joined does not exist, the server, i.e. \a mginit, will
+ * try to create a new one. If you passed a NULL pointer or a null string for
+ * \a layer_name, the client will join to the default layer.
+ *
+ * If the client want to create a new layer, you should specify the maximal
+ * number of z-nodes in the higher level (max_nr_highers) and the maximal
+ * number of z-nodes in the normal level (max_nr_normals) of the new layer.
+ * Passing zero to \a max_nr_highers and max_nr_normals will use the default
+ * values, and the default values are specified by ServerStartup.
+ *
+ * Note that the server will create a default layer named "mginit".
+ *
+ * \param layer_name The name of the layer. You can use NAME_TOPMOST_LAYER to
+ *        specify the current topmost layer.
+ * \param client_name The name of the client.
+ * \param max_nr_highers The maximal number of z-nodes in the higher level of
+ *        the new layer.
+ * \param max_nr_normals The maximal number of z-nodes in the normal level of
+ *        the new layer.
+ * \param cli_id The pointer to a buffer of int to return the client identifier.
+ *
+ * \return The handle to the layer on success, INV_LAYER_HANDLE on error.
+ *
+ * \note Only call this function in clients of MiniGUI-Processes.
+ *
+ * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
+ */
+MG_EXPORT GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_id);
+
 /**
 * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
@@ -490,9 +529,30 @@ MG_EXPORT void GUIAPI MiniGUIPanic (int exitcode);
 *
 * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
 */
-MG_EXPORT GHANDLE GUIAPI JoinLayer (const char* layer_name,
+static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
-                int max_nr_highers, int max_nr_normals);
+                int max_nr_highers, int max_nr_normals)
+{
+    return JoinLayerEx (layer_name, client_name,
+                max_nr_highers, max_nr_normals, NULL);
+}
+
+/**
+ * \fn int GUIAPI GetClientId (void)
+ * \brief Gets the client identifier.
+ *
+ * You can get the information of a layer through this function.
+ * The information will be returned through the pointer arguments
+ * if the specific pointer is not NULL.
+ *
+ * \return Returns the client identifier of the current process.
+ *      Note that the server always returns 0.
+ *
+ * \sa JoinLayerEx
+ *
+ * Since 5.2.0
+ */
+MG_EXPORT int GUIAPI GetClientId (void);

 /**
 * \fn GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
@@ -2125,7 +2185,7 @@ MG_EXPORT int GUIAPI ServerSendReplyEx (int clifd,
 * \fn int GUIAPI ServerSendReply (int clifd, const void* reply, int len)
 * \brief Sends the reply to the client.
 *
- * This function sends a replay pointed to by \a reply which is
+ * This function sends a reply pointed to by \a reply which is
 * \a len bytes long to the client.
 *
 * \note Only used by the server to send the reply to the client.
@@ -2673,6 +2733,26 @@ MG_EXPORT void GUIAPI DesktopUpdateAllWindow (void);

 #define DUMMY_LAYER_HANDLE  (GHANDLE)(-1)

+/**
+ * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+                const char* client_name,
+                int max_nr_highers, int max_nr_normals, int *cli_fd)
+ * \brief The dummy replacement of the same function for MiniGUI-Processes.
+ *
+ * This function is a replacment of the same function for MiniGUI-Processes
+ * runtime mode. We provide this function for MiniGUI-Threads and
+ * MiniGUI-Standalone runtime modes, in order to avoid using the
+ * conditional compilation instructions in your source code.
+ *
+ * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
+ */
+static inline GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
+        const char* client_name,
+        int max_nr_highers, int max_nr_normals, int *cli_fd)
+{
+    return DUMMY_LAYER_HANDLE;
+}
+
 /**
 * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
@@ -2687,7 +2767,8 @@ MG_EXPORT void GUIAPI DesktopUpdateAllWindow (void);
 * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
 */
 static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
-        const char* client_name, int max_nr_highers, int max_nr_normals)
+        const char* client_name,
+        int max_nr_highers, int max_nr_normals)
 {
    return DUMMY_LAYER_HANDLE;
 }
@@ -2990,18 +2990,22 @@ typedef struct _WINMASKINFO {
   if the client moved to a new layer */
 #define MSG_LAYERCHANGED    0x0149

+/* Since 5.2.0; the server send this message to the client
+   if a window has been composited to the screen.  */
+#define MSG_WINCOMPOSITED   0x014A
+
 #endif /* defined _MGRM_PROCESSES */

 /* Since 5.0.0: for managing message thread */
-#define MSG_MANAGE_MSGTHREAD    0x014A
+#define MSG_MANAGE_MSGTHREAD    0x014B
    #define MSGTHREAD_SIGNIN        0x00
    #define MSGTHREAD_SIGNOUT       0x01

 /* Since 5.0.0: for calculating the default position */
-#define MSG_CALC_POSITION       0x014B
+#define MSG_CALC_POSITION       0x014C

 /* Since 5.0.6: for waking up the client */
-#define MSG_WAKEUP_CLIENT       0x014C
+#define MSG_WAKEUP_CLIENT       0x014D

 /**
 * \def MSG_DOESNEEDIME
@@ -7237,6 +7241,31 @@ MG_EXPORT BOOL GUIAPI SetMainWindowGestureFlags (HWND hWnd, DWORD dwFlags);

 #ifdef _MGSCHEMA_COMPOSITING

+/**
+ * \fn int GUIAPI GetWindowSharedSurfaceFD (HWND hwnd, size_t *map_size,
+ *      DWORD *flags)
+ * \brief Gets the file descriptor of the surface buffer for a window or
+ * the main window it locates.
+ *
+ * This function gets the file descriptor of the surface buffer for
+ * the specified window if it is a main window or the main window it locates.
+ * Note that if the window is a control that has the style `WS_EX_CTRLASMAINWIN`,
+ * the window will have a separate surface buffer.
+ *
+ * \param hwnd The handle to the window.
+ *
+ * \return An integer larger than or equal to 0 for a valid file descriptor,
+ *      otherwise a negative value.
+ *
+ * \note This function only available when _MGSCHEMA_COMPOSITING is defined.
+ *
+ * \sa CreateMemDCFromSharedSurfaceFD
+ *
+ * Since 5.0.13
+ */
+MG_EXPORT int GUIAPI GetWindowSharedSurfaceFD (HWND hWnd, size_t *map_size,
+        DWORD *flags);
+
 /**
 * \fn BOOL GUIAPI SetMainWindowCompositing (HWND hWnd,
        int type, DWORD arg)
@@ -2,11 +2,12 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
+runmode=@MINIGUI_RUNMODE@
+libsuffix=@MGLIB_SUFFIX@

 Name: MiniGUI
 Description: A mature cross-platform windowing and GUI system for embedded systems and IoT smart devices.
 Version: @MINIGUI_VERSION@
-Runmode: @MINIGUI_RUNMODE@
 Requires:
 Libs: -L${libdir} -lminigui_@MGLIB_SUFFIX@ @DEP_LIBS@
 Libs.private:
@@ -184,6 +184,23 @@ static void process_socket_message (MSG *msg)
                LOSWORD(msg->wParam), HISWORD(msg->wParam),
                LOSWORD(msg->lParam), HISWORD(msg->lParam));
    }
+#ifdef _MGSCHEMA_COMPOSITING
+    else if (msg->message == MSG_WINCOMPOSITED) {
+        /* Since 5.2.0 */
+        int slot = (int)msg->wParam;
+        HWND hwnd = (HWND)msg->lParam;
+        unsigned dirty_age = (unsigned)msg->time;
+        if (__mg_client_check_znode_hwnd(slot, hwnd, __mg_client_id)) {
+            GAL_Surface *ssurf = ((PMAINWIN)hwnd)->surf;
+            assert(ssurf->shared_header);
+            __mg_lock_file_for_write(ssurf->fd);
+            if (ssurf->dirty_info->dirty_age == dirty_age) {
+                ssurf->dirty_info->nr_dirty_rcs = 0;
+            }
+            __mg_unlock_file_for_write(ssurf->fd);
+        }
+    }
+#endif
    else {
        if (msg->hwnd == HWND_NULL) {
            msg->hwnd = HWND_DESKTOP;
@@ -518,8 +535,8 @@ BOOL client_IdleHandler4Client (PMSGQUEUE msg_queue, BOOL wait)
    return (n > 0);
 }

-GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
-               int max_nr_topmosts, int max_nr_normals)
+GHANDLE GUIAPI JoinLayerEx (const char* layer_name, const char* client_name,
+               int max_nr_topmosts, int max_nr_normals, int *cli_id)
 {
    GHANDLE layer_handle = INV_LAYER_HANDLE;
    REQUEST req;
@@ -529,8 +546,12 @@ GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
    if (mgIsServer)
        return layer_handle;

-    if (__mg_client_id != 0) /* Already joined, return the handle */
+    if (__mg_client_id != 0) {
+        /* Already joined, return the handle */
+        if (cli_id)
+            *cli_id = __mg_client_id;
        return GetLayerInfo (NAME_SELF_LAYER, NULL, NULL, NULL);
+    }

    if (layer_name) {
        strncpy (info.layer_name, layer_name, LEN_LAYER_NAME);
@@ -593,10 +614,18 @@ GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,

    __mg_start_client_desktop ();

+    if (cli_id)
+        *cli_id = __mg_client_id;
+
 ret:
    return layer_handle;
 }

+int GUIAPI GetClientId (void)
+{
+    return __mg_client_id;
+}
+
 GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
                int* nr_clients, BOOL* is_topmost, int* cli_active)
 {
@@ -226,7 +226,7 @@ static int iso8859_6_conv_from_uc32 (Uchar32 wc, unsigned char* mchar)
 }
 #endif

-/* must attetion the para s is arabic chv value.*/
+#if 0
 static int is_arabic_char_vowel(Uint8 c)
 {

@@ -240,6 +240,7 @@ static int is_arabic_char_vowel(Uint8 c)
    */
    return 0;
 }
+#endif

 /* ISO8859-6 charset vowel relative define and judge */
 #define ISARABIC_VOWEL(s) ((s >= FATHATAN) && (s <= SUKUN))
@@ -469,9 +470,12 @@ static int iso8859_6_len_first_char (const unsigned char* mstr, int len)

 static unsigned int iso8859_6_char_type (Achar32 chv)
 {
+    chv = REAL_ACHAR(chv);
+#if 1
+    return sb_char_type(chv);
+#else
    unsigned int ch_type = ACHAR_BASIC_UNKNOWN;

-    chv = REAL_ACHAR(chv);
    if (is_arabic_char_vowel (chv)) {  /* is vowel */
        ch_type = ACHAR_BASIC_VOWEL;
    }
@@ -480,6 +484,7 @@ static unsigned int iso8859_6_char_type (Achar32 chv)
    }

    return ch_type;
+#endif
 }

 static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
@@ -2185,7 +2185,7 @@ static int create_memdc_for_menu (TRACKMENUINFO* ptmi)
        return -1;
    }

-    ptmi->dc = CreateMemDCFromSurface (surf);
+    ptmi->dc = __mg_create_memdc_for_surface (surf);
    if (ptmi->dc == HDC_INVALID) {
        GAL_FreeSurface (surf);
        return -1;
@@ -4476,10 +4476,10 @@ HWND GUIAPI CreateMainWindowEx2 (PMAINWINCREATE pCreateInfo, LINT id,
 #endif

 #ifdef _MGSCHEMA_COMPOSITING
-    // Close file descriptor to free kernel memory?
-    if (pWin->surf->shared_header) {
-        close (pWin->surf->shared_header->fd);
-        pWin->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && pWin->surf->shared_header) {
+        close (pWin->surf->fd);
+        pWin->surf->fd = -1;
    }
 #endif

@@ -5585,11 +5585,13 @@ BOOL GUIAPI ValidateRegion (HWND hWnd, const CLIPRGN* pRgn)
 BOOL GUIAPI GetUpdateRect (HWND hWnd, RECT* update_rect)
 {
    PMAINWIN pWin;
+    RECT rcClient;

    MG_CHECK_RET (MG_IS_NORMAL_WINDOW(hWnd), FALSE);
    pWin = MG_GET_WINDOW_PTR (hWnd);

-    *update_rect = pWin->InvRgn.rgn.rcBound;
+    GetClientRect(hWnd, &rcClient);
+    IntersectRect(update_rect, &pWin->InvRgn.rgn.rcBound, &rcClient);
    return TRUE;
 }

@@ -6036,10 +6038,10 @@ HWND GUIAPI CreateWindowEx2 (const char* spClassName,
    }

 #ifdef _MGSCHEMA_COMPOSITING
-    // Close file descriptor to free kernel memory?
-    if (dwExStyle & WS_EX_CTRLASMAINWIN && pNewCtrl->surf->shared_header) {
-        close (pNewCtrl->surf->shared_header->fd);
-        pNewCtrl->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && dwExStyle & WS_EX_CTRLASMAINWIN && pNewCtrl->surf->shared_header) {
+        close (pNewCtrl->surf->fd);
+        pNewCtrl->surf->fd = -1;
    }
 #endif

@@ -6066,6 +6068,28 @@ error:
    return HWND_INVALID;
 }

+#ifdef _MGSCHEMA_COMPOSITING
+int GUIAPI GetWindowSharedSurfaceFD (HWND hWnd, size_t *map_size, DWORD *flags)
+{
+    MG_CHECK_RET (MG_IS_NORMAL_WINDOW (hWnd), -1);
+
+    PMAINWIN pWin = (PMAINWIN)hWnd;
+    if (pWin->surf->shared_header) {
+        if (map_size)
+            *map_size = pWin->surf->shared_header->map_size;
+        if (flags) {
+            *flags = MEMDC_FLAG_SWSURFACE;
+            if (pWin->surf->shared_header->byhw)
+                *flags |= MEMDC_FLAG_HWSURFACE;
+        }
+
+        return pWin->surf->fd;
+    }
+
+    return -1;
+}
+#endif /* _MGSCHEMA_COMPOSITING */
+
 BOOL GUIAPI DestroyWindow (HWND hWnd)
 {
    PCONTROL pCtrl;
@@ -105,6 +105,10 @@
 #define REQID_GETSHAREDSURFACE      0x001C
    // for compositing schema
    #define SYSSF_WALLPAPER_PATTER      "syssf-wallpaper-pattern"
+    #define APPSF_NAME_PREFIX           "appsf-name-"
+    #define APPSF_NAME_PATTER           "appsf-name-%s"
+    #define APPSF_HWND_PREFIX           "appsf-hwnd-"
+    #define APPSF_HWND_PATTER           "appsf-hwnd-%d-%p"
    // for sharedfb schema
    #define SYSSF_REAL_SCREEN           "syssf-real-screen"
    #define SYSSF_SHADOW_SCREEN         "syssf-shadow-screen"
@@ -113,10 +117,22 @@
 #define REQID_LOADCURSOR_PNG        0x001D
 // Load cursor from in-memory PNG
 #define REQID_LOADCURSOR_PNG_MEM    0x001E
+
+#if 0 // Deprecated since 5.2.0
 // allocate semaphore for shared surface
 #define REQID_ALLOC_SURF_SEM        0x001F
 // free semaphore of shared surface
 #define REQID_FREE_SURF_SEM         0x0020
+#endif
+
+/* Since 5.2.0 */
+// Operate a shared surface to register/revoke the name and set the fd
+#define REQID_OPERATENAMEDSSURF     0x001F
+    #define ID_NAMEDSSURFOP_REGISTER    1
+    #define ID_NAMEDSSURFOP_SET         2
+    #define ID_NAMEDSSURFOP_REVOKE      3
+
+#define REQID_RESERVED              0x0020

 // Move the current client to another layer
 #define REQID_MOVETOLAYER           0x0021
@@ -142,15 +158,23 @@ MGUI_COMPILE_TIME_ASSERT(sys_request_id, MAX_SYS_REQID >= REQID_SYS_LAST);

 #undef MGUI_COMPILE_TIME_ASSERT

+/* Since 5.2.0 */
+typedef struct OperateNSSurfInfo
+{
+    int     id_op;
+    char    name[NAME_MAX + 1];
+    size_t  map_size;
+} OPERATENSSURFINFO;
+
 /* Since 5.0.0 */
 typedef struct _SharedSurfInfo {
+    size_t      size;       // whole size of the surface
+    off_t       offset;     // offset of pixel data
    uint32_t    flags;      // the flags of the surface
    uint32_t    width, height;
    uint32_t    pitch;
    uint32_t    name;       // when use flink name
    uint32_t    drm_format; // DRM pixel format
-    size_t      size;       // whole size of the surface
-    off_t       offset;     // offset of pixel data
 } SHAREDSURFINFO;

 typedef struct JoinLayerInfo {
@@ -359,6 +383,7 @@ void __mg_start_client_desktop (void);

 void __mg_update_window (HWND hwnd, int left, int top, int right, int bottom);

+BOOL __mg_client_check_znode_hwnd (int slot, HWND hwnd, int cli);
 BOOL __mg_client_check_hwnd (HWND hwnd, int cli);
 BOOL __mg_client_on_layer_changed (GHANDLE layer_handle, int zi_shmid);

@@ -521,14 +521,16 @@ static inline void _dc_step_y (PDC pdc, int step)

 #       define BLOCK_DRAW_SEM(pdc)                                  \
 do {                                                                \
-    if (pdc->surface->shared_header)                                \
-        LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);    \
+    if (pdc->surface->shared_header) {                              \
+        __mg_lock_file_for_write(pdc->surface->fd);                 \
+    }                                                               \
 } while (0)

 #       define UNBLOCK_DRAW_SEM(pdc)                                \
 do {                                                                \
-    if (pdc->surface->shared_header)                                \
-        UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);  \
+    if (pdc->surface->shared_header) {                              \
+        __mg_unlock_file_for_write(pdc->surface->fd);               \
+    }                                                               \
 } while (0)

 #       define IS_SCREEN_SURFACE(pdc)                       \
@@ -51,12 +51,10 @@
 #ifndef GUI_DRAWSEMOP_H
    #define GUI_DRAWSEMOP_H

-#ifdef __cplusplus
-extern "C" {
-#endif  /* __cplusplus */
-
 #include <errno.h>

+#include "misc.h"
+
 static inline void my_sem_op (int semid, int num, int op)
 {
    struct sembuf sb;
@@ -70,6 +68,9 @@ again:
        if (errno == EINTR) {
            goto again;
        }
+        else {
+            _ERR_PRINTF("Failed semop: %m\n");
+        }
    }
 }

@@ -79,10 +80,7 @@ again:
 #define LOCK_SCREEN_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, -1)
 #define UNLOCK_SCREEN_SEM() my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, 1)

-#ifdef _MGSCHEMA_COMPOSITING
-#   define LOCK_SURFACE_SEM(num)    my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, -1)
-#   define UNLOCK_SURFACE_SEM(num)  my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, 1)
-#endif
+extern int __mg_client_id;

 #ifdef _MGHAVE_CURSOR

@@ -157,6 +155,10 @@ again:
 #   define UNLOCK_MOUSEMOVE_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_MOUSEMOVE, 1)
 #endif /* _MGRM_PROCESSES */

+#ifdef __cplusplus
+extern "C" {
+#endif  /* __cplusplus */
+
 #ifdef __cplusplus
 }
 #endif  /* __cplusplus */
@@ -927,9 +927,7 @@ BOOL gui_LoadIconRes(HDC hdc, const char* rdr_name, char* file);
 void gui_WndRect(HWND hWnd, PRECT prc);
 void gui_WndClientRect(HWND hWnd, PRECT prc);

-/* Undisclosed APIs */
-HDC CreateMemDCFromSurface (struct GAL_Surface* surface);
-struct GAL_Surface* GetSurfaceFromDC (HDC hdc);
+HDC __mg_create_memdc_for_surface (struct GAL_Surface* surface);

 /* Since 5.0.0 */
 #ifdef _MGRM_PROCESSES
@@ -83,6 +83,11 @@ static inline int comp_key_string (const void *key1, const void *key2)
    return strcmp (key1, key2);
 }

+static inline void free_val_alloc (void *val)
+{
+    free (val);
+}
+
 typedef struct _map_t map_t;
 typedef struct _map_entry_t {
    struct rb_node  node;
@@ -100,8 +105,15 @@ int __mg_map_get_size (map_t* map);

 map_entry_t* __mg_map_find (map_t* map, const void* key);

-int __mg_map_insert_ex (map_t* map, const void* key,
+map_entry_t* __mg_map_insert_ex2 (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt);
+
+static int __mg_map_insert_ex (map_t* map, const void* key,
+        const void* val, free_val_fn free_val_alt)
+{
+    return __mg_map_insert_ex2(map, key, val, NULL) ? 0 : -1;
+}
+
 static inline int  __mg_map_insert (map_t* map, const void* key,
        const void* val)
 {
@@ -114,7 +126,7 @@ int __mg_map_find_replace_or_insert (map_t* map, const void* key,
 int __mg_map_replace (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt);

-int __mg_map_erase (map_t* map, void* key);
+int __mg_map_erase (map_t* map, const void* key);
 int __mg_map_get_size (map_t* map);

 #if 0   /* deprecated code */
@@ -79,6 +79,11 @@ struct timezone {
 extern "C" {
 #endif  /* __cplusplus */

+void __mg_lock_file_for_read(int fd);
+void __mg_unlock_file_for_read(int fd);
+void __mg_lock_file_for_write(int fd);
+void __mg_unlock_file_for_write(int fd);
+
 unsigned int __mg_os_get_random_seed (void);
 void __mg_os_time_delay (int ms);
 void __mg_os_start_time (void);
@@ -115,10 +120,11 @@ void mg_TerminateMisc (void);
 BOOL mg_InitSystemRes (void);
 void mg_TerminateSystemRes (void);

+/* Deprecated since 5.2.0
 #ifdef _MGSCHEMA_COMPOSITING
 int __mg_alloc_sem_for_shared_surf (void);
 int __mg_free_sem_for_shared_surf (int sem_num);
-#endif /* _MGSCHEMA_COMPOSITING */
+#endif _MGSCHEMA_COMPOSITING */

 size_t __mg_lookfor_unused_slot (unsigned char* bitmap, size_t len_bmp, int set);

@@ -396,10 +396,10 @@ char * __mg_msgstr3 [] =
    "MSG_SRVNOTIFY",          // 0x0147
    "MSG_UPDATECLIWIN",       // 0x0148
    "MSG_LAYERCHANGED",       // 0x0149
-    "MSG_MANAGE_MSGTHREAD",   // 0x014A
-    "MSG_CALC_POSITION",      // 0x014B
-    "",                       // 0x014C
-    "",                       // 0x014D
+    "MSG_WINCOMPOSITED",      // 0x014A
+    "MSG_MANAGE_MSGTHREAD",   // 0x014B
+    "MSG_CALC_POSITION",      // 0x014C
+    "MSG_WAKEUP_CLIENT",      // 0x014D
    "",                       // 0x014E
    "",                       // 0x014F

@@ -117,8 +117,10 @@ void GAL_FreeFormat(GAL_PixelFormat *format);

 /* typedef for private surface blitting functions */
 struct GAL_Surface;
-typedef int (*GAL_blit)(struct GAL_Surface *src, GAL_Rect *srcrect,
-                        struct GAL_Surface *dst, GAL_Rect *dstrect);
+
+typedef int (*GAL_blit)(GAL_VideoDevice *video,
+        struct GAL_Surface *src, GAL_Rect *srcrect,
+        struct GAL_Surface *dst, GAL_Rect *dstrect);

 #if IS_COMPOSITING_SCHEMA
 typedef struct _DirtyInfo {
@@ -137,20 +139,25 @@ typedef struct _DirtyInfo {
 * than the creator.
 */
 typedef struct _SharedSurfaceHeader {
-    /* The number of semphore for this surface.
-       The SysV semaphore set id for synchronizing this shared surface:
-       SHAREDRES_SEMID_SHARED_SURF. */
-    int             sem_num;
+    /* the name of the shared surface; since 5.2.0. */
+    char            name[NAME_MAX + 1];

-    /* The pid of the creator */
-    pid_t           creator;
+    /* The client identifier of the creator. */
+    int             create_cli;

-    /* The file descriptor in context of the creator. */
-    int             fd;
    /* Not zero for hardware surface. */
    int             byhw;
-    /* The dirty information */
-    GAL_DirtyInfo   dirty_info;
+
+    /* Deprecated since 5.2.0.
+       The number of semphore for this surface.
+       The SysV semaphore set id for synchronizing this shared surface:
+       SHAREDRES_SEMID_SHARED_SURF.
+    int             sem_num; */
+
+    /* Deprecated since 5.2.0.
+       The file descriptor in context of the creator.
+    int             fd; */
+
    /* the size of the surface */
    int             width, height;
    /* the pitch of the surface */
@@ -164,6 +171,9 @@ typedef struct _SharedSurfaceHeader {
    size_t          map_size;
    /* the offset of pixels data */
    off_t           pixels_off;
+
+    /* The dirty information */
+    GAL_DirtyInfo   dirty_info;
 } GAL_SharedSurfaceHeader;
 #endif /* IS_COMPOSITING_SCHEMA */

@@ -228,6 +238,8 @@ typedef struct GAL_Surface {
    GAL_SharedSurfaceHeader *shared_header;     /* Private */
    /* The dirty info for non-shared surface. */
    GAL_DirtyInfo *dirty_info;                  /* Private */
+    /* The file descriptor if the surface is a shared surface. */
+    int  fd;                                    /* Private; since 5.2.0. */
 #endif
 } GAL_Surface;

@@ -250,6 +262,8 @@ typedef struct GAL_Surface {

 #define GAL_PREALLOC         0x01000000    /* Surface uses preallocated memory */
 #define GAL_FORMAT_CHECKED   0x02000000    /* Pixman format checked */
+#define GAL_SSURF_ATTACHED   0x04000000    /* The shared surface is attached to. */
+#define GAL_SSURF_LOCKED     0x08000000    /* The shared surface is locked. */

 /* Available for GAL_SetVideoMode() */
 #define GAL_ANYFORMAT        0x10000000     /* Allow any video depth/pixel-format */
@@ -569,6 +583,11 @@ GAL_Surface *GAL_CreateRGBSurface
 GAL_Surface *GAL_CreateRGBSurfaceFrom (void *pixels,
                        int width, int height, int depth, int pitch,
                        Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
+/* Since 5.2.0 */
+static GAL_Surface *GAL_RefSurface (GAL_Surface *surface) {
+    surface->refcount++;
+    return surface;
+}
 void GAL_FreeSurface (GAL_Surface *surface);

 typedef struct REQ_HWSURFACE {
@@ -649,11 +668,11 @@ GAL_Surface *GAL_CreateSurfaceForZNodeAs (const GAL_Surface* ref_surf,
 void GAL_FreeSharedSurfaceData (GAL_Surface *surface);

 /* Attach to a shared RGB surface. */
-GAL_Surface *GAL_AttachSharedRGBSurface (int fd, size_t map_size,
-            Uint32 flags, BOOL with_wr);
+GAL_Surface *GAL_AttachSharedRGBSurface (GAL_VideoDevice* video,
+        int fd, size_t map_size, Uint32 flags, BOOL with_wr);

-/* Dettach from a shared RGB surface from the specific video device. */
-void GAL_DettachSharedSurfaceData (GAL_Surface *surface);
+/* Detach from a shared RGB surface from the specific video device. */
+void GAL_DetachSharedSurfaceData (GAL_Surface *surface);

 /* Create a cursor surface from the specific video device. */
 GAL_Surface* GAL_CreateCursorSurface (GAL_VideoDevice* video,
@@ -670,7 +689,6 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);

 #endif /* defined _MGSCHEMA_COMPOSITING */

-#if 0
 /*
 * GAL_LockSurface() sets up a surface for directly accessing the pixels.
 * Between calls to GAL_LockSurface()/GAL_UnlockSurface(), you can write
@@ -680,9 +698,7 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
 *
 * Not all surfaces require locking.  If GAL_MUSTLOCK(surface) evaluates
 * to 0, then you can read and write to the surface at any time, and the
- * pixel format of the surface will not change.  In particular, if the
- * GAL_HWSURFACE flag is not given when calling GAL_SetVideoMode(), you
- * will not need to lock the display surface before accessing it.
+ * pixel format of the surface will not change.
 *
 * No operating system or library calls should be made between lock/unlock
 * pairs, as critical system locks may be held during this time.
@@ -691,7 +707,6 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
 */
 int GAL_LockSurface (GAL_Surface *surface);
 void GAL_UnlockSurface (GAL_Surface *surface);
-#endif

 /*
 * Set the color key (transparent pixel) in a blittable surface.
@@ -132,6 +132,13 @@ void __mg_client_del (int cli);

 void __mg_release_global_res (int cli);

+/* Since 5.2.0 */
+int __mg_nssurf_map_new(void);
+void __mg_nssurf_map_delete(void);
+int __mg_nssurf_map_operate_srv(const OPERATENSSURFINFO* req_info,
+        int cli, int fd);
+int __mg_get_shared_surface_srv(const char *itn_name, SHAREDSURFINFO *info);
+
 void __mg_remove_client (int cli, int clifd);

 int __mg_handle_request (int clifd, int req_id, int cli);
@@ -150,6 +157,7 @@ int __mg_remove_all_znodes_of_client (int cli);

 int __mg_handle_normal_mouse_move (const ZORDERINFO* zi, int x, int y);
 int __mg_get_znode_at_point (const ZORDERINFO* zi, int x, int y, HWND* hwnd);
+ZORDERNODE *__mg_find_znode_by_client_hwnd (int cli, HWND hwnd);

 int __mg_do_reghook_operation (int cli, const REGHOOKINFO* info);
 int __mg_handle_mouse_hook (int message, WPARAM wParam, LPARAM lParam);
@@ -112,7 +112,7 @@ typedef struct tagG_RES {

    int nr_layers;
    int semid_layer;
-#ifdef _MGSCHEMA_COMPOSITING
+#if 0 && defined(_MGSCHEMA_COMPOSITING) // deprecated since 5.2.0
    int semid_shared_surf;  /* the id of semaphore set for shared surfaces */
 #endif

@@ -208,7 +208,7 @@ typedef G_RES* PG_RES;
 #define SHAREDRES_NR_LAYSERS    (((PG_RES)mgSharedRes)->nr_layers)
 #define SHAREDRES_SEMID_LAYER   (((PG_RES)mgSharedRes)->semid_layer)

-#ifdef _MGSCHEMA_COMPOSITING
+#if 0 && defined(_MGSCHEMA_COMPOSITING) // Deprecated since 5.2.0
 # define SHAREDRES_SEMID_SHARED_SURF (((PG_RES)mgSharedRes)->semid_shared_surf)
 #endif

@@ -228,6 +228,7 @@ static void composite_wallpaper_rect (CompositorCtxt* ctxt,
        }
    }
    else {
+        SelectClipRect (HDC_SCREEN_SYS, dirty_rc);
        SetBrushColor (HDC_SCREEN_SYS,
            GetWindowElementPixelEx (HWND_DESKTOP, HDC_SCREEN_SYS,
                WE_BGC_DESKTOP));
@@ -678,6 +679,19 @@ static BOOL merge_dirty_ppp (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
    return rc;
 }

+#if 0
+static void dump_dirty_region(CompositorCtxt* ctxt, const char *prefix, int zidx)
+{
+    CLIPRGN* rgn = &ctxt->dirty_rgn;
+    _WRN_PRINTF("%s (%d): dirty region on screen: (%d, %d) %d x %d; "
+            "highest dirty win: %d; lowest dirty win: %d\n",
+            prefix, zidx,
+            rgn->rcBound.left, rgn->rcBound.top,
+            RECTW (rgn->rcBound), RECTH (rgn->rcBound),
+            ctxt->highest_dirty_win, ctxt->lowest_dirty_win);
+}
+#endif
+
 static BOOL merge_dirty_win (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
 {
    BOOL rc = FALSE;
@@ -721,9 +735,13 @@ static BOOL merge_dirty_wpp (CompositorCtxt* ctxt, MG_Layer* layer)
 static BOOL refresh_dirty_region (CompositorCtxt* ctxt, MG_Layer* layer)
 {
    /* the fallback compositor only manages znodes on the topmost layer. */
-    if (layer != mgTopmostLayer || IsEmptyClipRgn (&ctxt->dirty_rgn))
+    if (layer != mgTopmostLayer)
        return FALSE;

+    if (IsEmptyClipRgn (&ctxt->dirty_rgn)) {
+        return FALSE;
+    }
+
    if (ctxt->highest_dirty_ppp >= 0) {
        composite_ppp_znodes (ctxt);
    }
@@ -56,7 +56,6 @@
 #include <string.h>
 #include <errno.h>

-#define _DEBUG
 #include "common.h"

 #if defined(_MGRM_PROCESSES) && defined(_MGSCHEMA_COMPOSITING)
@@ -69,6 +68,7 @@
 #include "constants.h"
 #include "zorder.h"
 #include "dc.h"
+#include "server.h"

 #define MAX_NR_COMPOSITORS      8
 #define LEN_COMPOSITOR_NAME     15
@@ -133,31 +133,51 @@ static void lock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
    if (node->lock_count == 0) {
        if (pdc->surface->shared_header) {
-            LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
+            __mg_lock_file_for_read(pdc->surface->fd);
        }

        node->dirty_age = pdc->surface->dirty_info->dirty_age;
        node->nr_dirty_rcs = pdc->surface->dirty_info->nr_dirty_rcs;
        node->dirty_rcs = pdc->surface->dirty_info->dirty_rcs;
-
    }

    node->lock_count++;
 }

-static void unlock_znode_surface (PDC pdc, ZORDERNODE* node)
+static BOOL unlock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
+    BOOL need_reset = FALSE;
    if (node->lock_count > 0) {
        node->lock_count--;
        if (node->lock_count == 0) {
-            if (pdc->surface->shared_header)
-                UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
+            if (node->changes != pdc->surface->dirty_info->dirty_age) {
+                node->changes = pdc->surface->dirty_info->dirty_age;
+                need_reset = TRUE;
+            }
+
+            if (pdc->surface->shared_header) {
+                __mg_unlock_file_for_read(pdc->surface->fd);
+            }

            node->dirty_age = 0;
            node->nr_dirty_rcs = 0;
            node->dirty_rcs = NULL;
        }
    }
+
+    return need_reset;
+}
+
+static void reset_znode_surface_dirty (PDC pdc, ZORDERNODE* node, int slot)
+{
+    if (node->cli == 0 || slot == 0) {
+        pdc->surface->dirty_info->nr_dirty_rcs = 0;
+    }
+    else if (node->hwnd) {
+        MSG msg = { HWND_NULL, MSG_WINCOMPOSITED,
+            slot, (LPARAM)node->hwnd, (DWORD)node->changes };
+        __mg_send2client(&msg, mgClients + node->cli);
+    }
 }

 #if 0   /* not optimized */
@@ -322,10 +342,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
        nodes = GET_MENUNODE(zi);
        for (i = 0; i < zi->nr_popupmenus; i++) {
            pdc = dc_HDC2PDC (nodes[i].mem_dc);
-
-            nodes[i].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes + i);
+            if (unlock_znode_surface (pdc, nodes + i))
+                reset_znode_surface_dirty (pdc, nodes + i, i);
        }
    }

@@ -335,9 +353,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
    while ((next = __kernel_get_next_znode (zi, next)) > 0) {
        if (nodes [next].flags & ZOF_VISIBLE) {
            pdc = dc_HDC2PDC (nodes[next].mem_dc);
-            nodes[next].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes + next);
+            if (unlock_znode_surface (pdc, nodes + next))
+                reset_znode_surface_dirty (pdc, nodes + next, next);
        }
    }

@@ -346,9 +363,8 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
    if (layer == mgTopmostLayer) {
        pdc = dc_HDC2PDC (HDC_SCREEN);
        if (pdc->surface->w > 0 && pdc->surface->h > 0) {
-            nodes[0].changes = pdc->surface->dirty_info->dirty_age;
-            pdc->surface->dirty_info->nr_dirty_rcs = 0;
-            unlock_znode_surface (pdc, nodes);
+            if (unlock_znode_surface (pdc, nodes))
+                reset_znode_surface_dirty (pdc, nodes, 0);
        }
    }
 }
@@ -1081,6 +1081,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    const RECT* prc;

    prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
            GAL_UpdateRect (cur_pdc->surface,
@@ -1090,7 +1096,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    }
    else {
        if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
-            return;
+            goto done;
        }

        if (!fShow) {
@@ -1109,6 +1115,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
            UNLOCK_CURSOR_SEM ();
        }
    }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 #else   /* defined _MGSCHEMA_SHAREDFB */
@@ -1124,6 +1136,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    }

    prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
    if (cur_pdc->surface == __gal_screen) {
        // Under compositing schema, we never call SyncUpdate in
        // kernel_ShowCursorForGDI for __gal_screen.
@@ -1150,6 +1168,11 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
        // For surface other than screen, we call SyncUpdate.
        GAL_SyncUpdate (cur_pdc->surface);
    }
+
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 #endif  /* not defined _MGSCHEMA_SHAREDFB */
@@ -1228,26 +1251,25 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    PDC cur_pdc = (PDC)pdc;
    const RECT* prc = NULL;

-    prc = &cur_pdc->rc_output;
-
-    /* houhh20080827, if --disable-cursor, mginit can not update auto(qvfb). */
-#if 0
-    if (cur_pdc->surface == __gal_screen
-            && mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer))
-        return;
-
-    if (fShow)
-        GAL_UpdateRect (cur_pdc->surface,
-                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-#else
    if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
        return;
    }

+    prc = &cur_pdc->rc_output;
+
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
    if (fShow)
        GAL_UpdateRect (cur_pdc->surface,
                prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-#endif
+
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 #endif /* _MGHAVE_CURSOR */
@@ -448,6 +448,11 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
            GAL_UpdateRect (cur_pdc->surface,
@@ -472,7 +477,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
                                prc->left, prc->top, RECTWP(prc), RECTHP(prc));
                //GAL_SyncUpdate (cur_pdc->surface);
            }
-            return;
+            goto done;
        }

        if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -488,6 +493,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
            //GAL_SyncUpdate (cur_pdc->surface);
        }
    }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 int GUIAPI ShowCursor (BOOL fShow)
@@ -516,9 +527,16 @@ void kernel_ShowCursorForGDI(BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

-    if (fShow)
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+    else {
        GAL_UpdateRect (cur_pdc->surface,
                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+        /* Since 5.0.13 */
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 #endif /* _MGHAVE_CURSOR */
@@ -472,11 +472,15 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)

    prc = &cur_pdc->rc_output;

+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
-            GAL_UpdateRect (cur_pdc->surface,
+            GAL_UpdateRect(cur_pdc->surface,
                            prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-            // GAL_SyncUpdate (cur_pdc->surface);
        }
    }
    else {
@@ -500,7 +504,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
                pthread_mutex_unlock(&__mg_mouselock);
                // GAL_SyncUpdate (cur_pdc->surface);
            }
-            return;
+            goto done;
        }

        if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -518,6 +522,12 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
            // GAL_SyncUpdate (cur_pdc->surface);
        }
    }
+
+done:
+    /* Since 5.0.13 */
+    if (fShow) {
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 int GUIAPI ShowCursor(BOOL fShow)
@@ -558,9 +568,17 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

-    if (fShow)
+    /* Since 5.0.13 */
+    if (!fShow) {
+        GAL_LockSurface(cur_pdc->surface);
+    }
+    else {
        GAL_UpdateRect (cur_pdc->surface,
                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+
+        /* Since 5.0.13 */
+        GAL_UnlockSurface(cur_pdc->surface);
+    }
 }

 #endif /* _MGHAVE_CURSOR */
@@ -55,6 +55,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#include <assert.h>

 #include "common.h"

@@ -364,7 +365,7 @@ static intptr_t cliAllocZOrderNode (PMAINWIN pWin, const COMPOSITINGINFO* ct_inf
    }

    if (ClientRequestEx2 (&req, caption, strlen(caption) + 1,
-            pWin->surf->shared_header->fd,
+            pWin->surf->fd,
            &ret, sizeof (intptr_t), NULL) < 0)
        return -1;
 #else   /* ndef _MGSCHEMA_COMPOSITING */
@@ -523,7 +524,7 @@ static intptr_t cliStartTrackPopupMenu (PTRACKMENUINFO ptmi)

        info.surf_flags = surf->flags;
        info.surf_size = surf->shared_header->map_size;
-        if (ClientRequestEx2 (&req, NULL, 0, surf->shared_header->fd,
+        if (ClientRequestEx2 (&req, NULL, 0, surf->fd,
                &ret, sizeof (intptr_t), NULL) < 0)
            return -1;
    }
@@ -836,8 +837,10 @@ static int srvAllocZOrderNode (int cli, HWND hwnd, HWND main_win,
        surf->refcount++;
    }
    else if (fd >= 0) {
-        surf = GAL_AttachSharedRGBSurface (fd, surf_size, surf_flags, TRUE);
-        close (fd);
+        surf = GAL_AttachSharedRGBSurface (NULL, fd,
+                surf_size, surf_flags, TRUE);
+        /* Since 5.2.0: keep fd available.
+        close (fd); */
    }
    else {
        _ERR_PRINTF("KERNEL: not server but fd for shared surface is invalid\n");
@@ -845,7 +848,7 @@ static int srvAllocZOrderNode (int cli, HWND hwnd, HWND main_win,
    }

    if (surf) {
-        memdc = CreateMemDCFromSurface (surf);
+        memdc = __mg_create_memdc_for_surface (surf);
        if (memdc == HDC_INVALID) {
            if (cli > 0) {
                GAL_FreeSurface (surf);
@@ -993,12 +996,14 @@ static int srvMoveWindow (int cli, int idx_znode, const RECT* rcWin,
            surf->refcount++;
        }
        else {
-            surf = GAL_AttachSharedRGBSurface (fd, surf_size, surf_flags, TRUE);
-            close (fd);
+            surf = GAL_AttachSharedRGBSurface (NULL, fd,
+                    surf_size, surf_flags, TRUE);
+            /* Since 5.2.0: keep fd available.
+            close (fd); */
        }

        if (surf) {
-            memdc = CreateMemDCFromSurface (surf);
+            memdc = __mg_create_memdc_for_surface (surf);
            if (memdc == HDC_INVALID) {
                if (cli > 0) {
                    GAL_FreeSurface (surf);
@@ -1013,7 +1018,6 @@ static int srvMoveWindow (int cli, int idx_znode, const RECT* rcWin,
            return -1;
        }
    }
-
 #endif /* def _MGSCHEMA_COMPOSITING */

    ret = dskMoveWindow (cli, idx_znode, memdc, rcWin);
@@ -1520,6 +1524,33 @@ static BOOL _cb_update_rc_nocli (void* context,
 }
 #endif /* not defined _MGSCHEMA_COMPOSITING */

+/* Since 5.2.0 */
+ZORDERNODE *__mg_find_znode_by_client_hwnd (int cli, HWND hwnd)
+{
+    ZORDERINFO* zi = get_zorder_info(cli);
+    ZORDERNODE* nodes;
+
+    if (zi == NULL)
+        return NULL;
+
+    int level, slot = -1;
+    nodes = GET_ZORDERNODE(zi);
+    for (level = 0; level < NR_ZORDER_LEVELS; level++) {
+        slot = zi->first_in_levels[level];
+        for (; slot > 0; slot = nodes[slot].next) {
+            if (nodes[slot].cli == cli && nodes[slot].hwnd == hwnd) {
+                goto found;
+            }
+        }
+    }
+
+    return NULL;
+
+found:
+    assert(slot >= 0);
+    return nodes + slot;
+}
+
 int __mg_remove_all_znodes_of_client (int cli)
 {
    BOOL has_special = FALSE;
@@ -2180,7 +2211,7 @@ static int resize_window_surface (PMAINWIN pWin, const RECT* prcResult)

        pWin->surf = new_surf;
        if (pWin->surf->shared_header)
-            return pWin->surf->shared_header->fd;
+            return pWin->surf->fd;
        else
            return 0;
    }
@@ -2225,9 +2256,10 @@ static int dskMoveGlobalControl (PMAINWIN pCtrl, RECT* prcExpect)
    }

 #ifdef _MGSCHEMA_COMPOSITING
-    if (pCtrl->surf->shared_header && pCtrl->surf->shared_header->fd >= 0) {
-        close (pCtrl->surf->shared_header->fd);
-        pCtrl->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && pCtrl->surf->shared_header && pCtrl->surf->fd >= 0) {
+        close (pCtrl->surf->fd);
+        pCtrl->surf->fd = -1;
    }
 #endif

@@ -2256,9 +2288,10 @@ static int dskMoveMainWindow (PMAINWIN pWin, RECT* prcExpect)
        __mg_update_dc_on_surface_changed ((HWND)pWin, pWin->surf);
    }

-    if (pWin->surf->shared_header && pWin->surf->shared_header->fd >= 0) {
-        close (pWin->surf->shared_header->fd);
-        pWin->surf->shared_header->fd = -1;
+    /* Since 5.2.0: keep fd available. */
+    if (0 && pWin->surf->shared_header && pWin->surf->fd >= 0) {
+        close (pWin->surf->fd);
+        pWin->surf->fd = -1;
    }
 #endif

@@ -2874,6 +2907,21 @@ int __mg_handle_mouse_hook (int message, WPARAM wParam, LPARAM lParam)
 }
 #endif  /* deprecated code */

+/* used by client to check the validation of a hwnd in the given znode slot. */
+BOOL __mg_client_check_znode_hwnd (int slot, HWND hwnd, int cli)
+{
+    BOOL ret = FALSE;
+    ZORDERINFO* zi = __mg_zorder_info;
+    ZORDERNODE* nodes;
+
+    nodes = GET_ZORDERNODE(zi);
+    lock_zi_for_read (zi);
+    if (nodes[slot].hwnd == hwnd && nodes[slot].cli == cli)
+        ret = TRUE;
+    unlock_zi_for_read (zi);
+    return ret;
+}
+
 /* used by client to check the validation of a hwnd */
 BOOL __mg_client_check_hwnd (HWND hwnd, int cli)
 {
@@ -55,6 +55,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#include <time.h>

 #include "common.h"

@@ -141,12 +142,31 @@ BOOL mg_InitDesktop (void)

 #include "debug.h"

-static IDLEHANDLER std_idle_handler;
-
+/* According to a bug report, we use sem_timedwait() instead of
+   calling std_idle_handler for desktop thread.
+   Otherwise, the desktop might not handle the request from other GUI threads
+   as soon as possible. */
 static BOOL idle_handler_for_desktop_thread (MSGQUEUE *msg_queue, BOOL wait)
 {
+    int retv, n = 0;
+
    __mg_update_tick_count (msg_queue);
-    return std_idle_handler (msg_queue, wait);
+
+    if (wait) {
+        struct timespec ts;
+        if (clock_gettime (CLOCK_REALTIME, &ts) != -1) {
+            ts.tv_nsec += 10 * 1000 * 1000L; // 10ms
+            if (ts.tv_nsec >= 1000 * 1000 * 1000L) {
+                ts.tv_sec += 1;
+                ts.tv_nsec -= 1000 * 1000 * 1000L;
+            }
+
+            if (sem_timedwait (&msg_queue->wait, &ts) == 0)
+                return TRUE;
+        }
+    }
+
+    return n > 0;
 }

 void* __kernel_desktop_main (void* data)
@@ -162,7 +182,6 @@ void* __kernel_desktop_main (void* data)

    /* For bug reported in Issue #116, under threads mode, the idle handler
       for the desktop thread should call __mg_update_tick_count () */
-    std_idle_handler = __mg_dsk_msg_queue->OnIdle;
    __mg_dsk_msg_queue->OnIdle = idle_handler_for_desktop_thread;

    /* init desktop window */
@@ -1603,8 +1603,10 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
            surf->refcount++;
        }
        else if (fd >= 0) {
-            surf = GAL_AttachSharedRGBSurface (fd, surf_size, surf_flags, TRUE);
-            close (fd);
+            surf = GAL_AttachSharedRGBSurface (NULL, fd,
+                    surf_size, surf_flags, TRUE);
+            /* Since 5.2.0: keep fd available.
+            close (fd); */
        }
        else {
            _WRN_PRINTF("not server but fd for shared surface is invalid\n");
@@ -1612,7 +1614,7 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
        }

        if (surf) {
-            memdc = CreateMemDCFromSurface (surf);
+            memdc = __mg_create_memdc_for_surface (surf);
            if (memdc == HDC_INVALID) {
                GAL_FreeSurface (surf);
                _WRN_PRINTF("failed to create memory dc for znode\n");
@@ -1646,11 +1648,14 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
    menu_nodes [zi->nr_popupmenus].flags = ZOF_TYPE_POPUPMENU;
    menu_nodes [zi->nr_popupmenus].rc = *rc;
    menu_nodes [zi->nr_popupmenus].hwnd = ptmi;
+    menu_nodes [zi->nr_popupmenus].cli = 0;
 #ifdef _MGSCHEMA_COMPOSITING
    menu_nodes [zi->nr_popupmenus].changes = 0;
    menu_nodes [zi->nr_popupmenus].ct = CT_OPAQUE;
    menu_nodes [zi->nr_popupmenus].ct_arg = 0;
    menu_nodes [zi->nr_popupmenus].mem_dc = memdc;
+    menu_nodes [zi->nr_popupmenus].dirty_age = 0;
+    menu_nodes [zi->nr_popupmenus].nr_dirty_rcs = 0;
    menu_nodes [zi->nr_popupmenus].dirty_rcs = NULL;
 #endif
    menu_nodes [zi->nr_popupmenus].priv_data = NULL;
@@ -2356,6 +2361,8 @@ static int AllocZOrderNodeEx (ZORDERINFO* zi, int cli, HWND hwnd, HWND main_win,
    nodes [free_slot].ct = validate_compositing_type (flags, ct);
    nodes [free_slot].ct_arg = ct_arg;
    nodes [free_slot].mem_dc = mem_dc;
+    nodes [free_slot].dirty_age = 0;
+    nodes [free_slot].nr_dirty_rcs = 0;
    nodes [free_slot].dirty_rcs = NULL;
 #else
    nodes [free_slot].age = 1;
@@ -562,6 +562,13 @@ int GUIAPI InitGUI (int args, const char *agr[])

    _is_minigui_running = 1;

+    /* init timer for tick counter */
+    step++;
+    if (!mg_InitTimer()) {
+        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
+        goto failure;
+    }
+
    step++;
    if (!SystemThreads()) {
        _ERR_PRINTF ("KERNEL>InitGUI: failed to init system threads!\n");
@@ -575,13 +582,6 @@ int GUIAPI InitGUI (int args, const char *agr[])
        goto failure;
    }

-    /* init timer for tick counter */
-    step++;
-    if (!mg_InitTimer()) {
-        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
-        goto failure;
-    }
-
    SetKeyboardLayout ("default");

    SetCursor (GetSystemCursor (IDC_ARROW));
@@ -955,6 +955,12 @@ checkagain:

        goto checkagain;
    }
+    else {
+        /* no message, wait again. */
+        if (pMsgQueue->OnIdle && !pMsgQueue->OnIdle (pMsgQueue, FALSE)) {
+            handle_idle_message (pMsgQueue);
+        }
+    }
 #else   /* defined _MGHAVE_VIRTUAL_WINDOW */
    /* no message, idle */
    if (bWait) {
@@ -964,6 +970,11 @@ checkagain:
        }
        goto checkagain;
    }
+    else {
+        if (!pMsgQueue->OnIdle (pMsgQueue, FALE)) {
+            handle_idle_message (pMsgQueue);
+        }
+    }
 #endif  /* not defined _MGHAVE_VIRTUAL_WINDOW */

    /* no message */
@@ -100,14 +100,14 @@ DWORD __mg_update_tick_count (MSGQUEUE* msg_queue)
        /* Since 5.0.0, the desktop only handles caret blinking in MSG_TIMEOUT
           message, and the interval for the timer of desktop changes to 0.05s.
         */
-        if (msg_queue == __mg_dsk_msg_queue) {
-            if (ticks > __mg_dsk_msg_queue->last_ticks +
+        if (msg_queue == __mg_dsk_msg_queue &&
+                ticks > __mg_dsk_msg_queue->old_tick_count +
                    DESKTOP_TIMER_INERTVAL) {
-                __mg_dsk_msg_queue->dwState |= QS_DESKTIMER;
+            __mg_dsk_msg_queue->dwState |= QS_DESKTIMER;
 #ifdef _MGRM_THREADS    /* only wake up desktop for threads mode */
-                POST_MSGQ (__mg_dsk_msg_queue);
+            POST_MSGQ (__mg_dsk_msg_queue);
 #endif
-            }
+            __mg_dsk_msg_queue->old_tick_count = ticks;
        }

        msg_queue->last_ticks = ticks;
@@ -7,7 +7,7 @@ EXTRA_DIST= misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \

 libmisc_la_SOURCES = misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \
                math.c about.c license.c anon_file.c rbtree.c map.c \
-                error.c sockio.c
+                error.c sockio.c lock_file.c

 SRC_FILES = $(libmisc_la_SOURCES)
 LIB_NAME=libmisc
@@ -114,7 +114,7 @@ static LRESULT AboutWinProc (HWND hWnd, UINT message,
        DrawText (hdc,
                "MiniGUI -- a mature cross-platform windowing system "
                "and GUI support system for embedded or IoT devices.\n\n"
-                "Copyright (C) 2002 ~ 2020 FMSoft Co., Ltd.",
+                "Copyright (C) 2002 ~ 2023 FMSoft Co., Ltd.",
                -1, &rcClient, DT_WORDBREAK | DT_CENTER);

        EndPaint (hWnd, hdc);
@@ -0,0 +1,112 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+//                          IMPORTANT NOTICE
+//
+// The following open source license statement does not apply to any
+// entity in the Exception List published by FMSoft.
+//
+// For more information, please visit:
+//
+// https://www.fmsoft.cn/exception-list
+//
+//////////////////////////////////////////////////////////////////////////////
+/*
+ *   This file is part of MiniGUI, a mature cross-platform windowing
+ *   and Graphics User Interface (GUI) support system for embedded systems
+ *   and smart IoT devices.
+ *
+ *   Copyright (C) 2023, Beijing FMSoft Technologies Co., Ltd.
+ *
+ *   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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ *   Or,
+ *
+ *   As this program is a library, any link to this program must follow
+ *   GNU General Public License version 3 (GPLv3). If you cannot accept
+ *   GPLv3, you need to be licensed from FMSoft.
+ *
+ *   If you have got a commercial license of this program, please use it
+ *   under the terms and conditions of the commercial license.
+ *
+ *   For more information about the commercial license, please refer to
+ *   <http://www.minigui.com/blog/minigui-licensing-policy/>.
+ */
+/*
+** lock_file.c: This file include functions for locking/unlocking a file.
+**
+** Create date: 2023/09/10
+**
+** Current maintainer: Wei Yongming.
+*/
+
+#include "common.h"
+
+#ifndef __NOUNIX__
+
+#include "misc.h"
+
+#include <unistd.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include <errno.h>
+
+void __mg_lock_file_for_read(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_RDLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
+}
+
+void __mg_unlock_file_for_read(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_UNLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    fcntl(fd, F_SETLK, &lock);
+}
+
+void __mg_lock_file_for_write(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_WRLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
+}
+
+void __mg_unlock_file_for_write(int fd)
+{
+    struct flock lock;
+
+    lock.l_type = F_UNLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 0;
+    lock.l_len = 0;
+
+    fcntl(fd, F_SETLK, &lock);
+}
+
+#endif /* __NOUNIX__ */
@@ -243,7 +243,7 @@ map_entry_t* __mg_map_find (map_t* map, const void* key)
    return entry;
 }

-int __mg_map_erase (map_t* map, void* key)
+int __mg_map_erase (map_t* map, const void* key)
 {
    int retval = -1;
    map_entry_t* entry = NULL;
@@ -299,7 +299,7 @@ ret:
    return retval;
 }

-int __mg_map_insert_ex (map_t* map, const void* key,
+map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt)
 {
    map_entry_t **pentry;
@@ -307,7 +307,7 @@ int __mg_map_insert_ex (map_t* map, const void* key,
    map_entry_t *parent;

    if (map == NULL)
-        return -1;
+        return NULL;

    WRLOCK_MAP (map);

@@ -354,7 +354,7 @@ int __mg_map_insert_ex (map_t* map, const void* key,
    }

    UNLOCK_MAP (map);
-    return 0;
+    return entry;
 }

 int __mg_map_find_replace_or_insert (map_t* map, const void* key,
@@ -495,28 +495,6 @@ DWORD __mg_os_get_time_ticks (void)
    return (current - startup_time_win32) / 10;
 }

-#if 0   /* deprecated code */
-DWORD __mg_os_get_elapsed_ms (void)
-{
-    static DWORD last;
-    DWORD current = timeGetTime();
-    DWORD elapsed;
-
-    if (current >= last) {
-        elapsed = current - last;
-        return elapsed;
-    }
-    else {
-        /* overflowed */
-        elapsed = BITMASK_DWORD - last;
-        elapsed += current;
-    }
-
-    last = current;
-    return elapsed;
-}
-#endif  /* deprecated code */
-
 #elif defined (HAVE_CLOCK_GETTIME)

 static struct timespec timeval_startup;
@@ -573,68 +551,6 @@ DWORD __mg_os_get_time_ticks (void)
    return ds * 100 + dms;
 }

-#if 0   /* deprecated code */
-DWORD __mg_os_get_elapsed_ms (void)
-{
-    static struct timespec last;
-    DWORD ds, dms;
-    struct timespec current;
-
-    clock_gettime (CLOCK_MONOTONIC, &current);
-    ds = (current.tv_sec - last.tv_sec);
-
-    if (current.tv_sec == last.tv_sec) {
-        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
-    }
-    else if (current.tv_nsec >= last.tv_nsec) {
-        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
-    }
-    else {
-        assert (ds > 0);
-
-        ds--;
-        dms = 1000L - (last.tv_nsec - current.tv_nsec) / 1000000L;
-    }
-
-    last = current;
-    return ds * 1000 + dms;
-}
-
-#include <unistd.h>
-#include <poll.h>
-#include <sys/time.h>
-
-static struct timeval timeval_startup;
-void __mg_os_start_time(void)
-{
-    gettimeofday(&timeval_startup, NULL);
-}
-
-DWORD __mg_os_get_time_ms(void)
-{
-    DWORD ds, dms;
-    struct timeval current;
-
-    gettimeofday(&current, NULL);
-    ds = (current.tv_sec - timeval_startup.tv_sec);
-
-    if (current.tv_sec == timeval_startup.tv_sec) {
-        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
-    }
-    else if (current.tv_usec >= timeval_startup.tv_usec) {
-        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
-    }
-    else {
-        assert(ds > 0);
-
-        ds--;
-        dms = 1000L - (timeval_startup.tv_usec - current.tv_usec) / 1000L;
-    }
-
-    return ds * 1000 + dms;
-}
-#endif  /* deprecated code */
-
 #else   /* defined HAVE_CLOCK_GETTIME */

 #error "Please implement __mg_os_start_time and __mg_os_get_time_ticks for your OS"
@@ -96,8 +96,12 @@ static BITMAP_TYPE_INFO bitmap_types [MAX_BITMAP_TYPES] =
   { "jpeg", __mg_init_jpg, __mg_load_jpg, __mg_cleanup_jpg, __mg_save_jpg, __mg_check_jpg },
 #endif
 #ifdef _MGIMAGE_PNG
+#if _MGLIBPNG_VER == 16
+   { "png", __mg_init_png, __mg_load_png, __mg_cleanup_png, __mg_save_png, __mg_check_png },
+#else
   { "png", __mg_init_png, __mg_load_png, __mg_cleanup_png, NULL, __mg_check_png },
 #endif
+#endif
 #ifdef _MGIMAGE_WEBP
   { "webp", __mg_init_webp, __mg_load_webp, __mg_cleanup_webp, NULL, __mg_check_webp },
 #endif
@@ -462,99 +462,100 @@ static void RLEClipBlit(int w, Uint8 *srcbuf, GAL_Surface *dst,

 }

-
 /* blit a colorkeyed RLE surface */
-int GAL_RLEBlit(GAL_Surface *src, GAL_Rect *srcrect,
+int GAL_RLEBlit(GAL_VideoDevice *video, GAL_Surface *src, GAL_Rect *srcrect,
                GAL_Surface *dst, GAL_Rect *dstrect)
 {
-        Uint8 *dstbuf;
-        Uint8 *srcbuf;
-        int x, y;
-        int w = src->w;
-        unsigned alpha;
+    (void)video;

-        /* Set up the source and destination pointers */
-        x = dstrect->x;
-        y = dstrect->y;
-        dstbuf = (Uint8 *)dst->pixels
-                 + y * dst->pitch + x * src->format->BytesPerPixel;
-        srcbuf = (Uint8 *)src->map->sw_data->aux_data;
+    Uint8 *dstbuf;
+    Uint8 *srcbuf;
+    int x, y;
+    int w = src->w;
+    unsigned alpha;

-        {
-            /* skip lines at the top if neccessary */
-            int vskip = srcrect->y;
-            int ofs = 0;
-            if(vskip) {
+    /* Set up the source and destination pointers */
+    x = dstrect->x;
+    y = dstrect->y;
+    dstbuf = (Uint8 *)dst->pixels
+             + y * dst->pitch + x * src->format->BytesPerPixel;
+    srcbuf = (Uint8 *)src->map->sw_data->aux_data;
+
+    {
+        /* skip lines at the top if neccessary */
+        int vskip = srcrect->y;
+        int ofs = 0;
+        if(vskip) {

 #define RLESKIP(bpp, Type)                        \
-                for(;;) {                        \
-                    int run;                        \
-                    ofs += *(Type *)srcbuf;        \
-                    run = ((Type *)srcbuf)[1];        \
-                    srcbuf += sizeof(Type) * 2;        \
-                    if(run) {                        \
-                        srcbuf += run * bpp;        \
-                        ofs += run;                \
-                    } else if(!ofs)                \
-                        goto done;                \
-                    if(ofs == w) {                \
-                        ofs = 0;                \
-                        if(!--vskip)                \
-                            break;                \
-                    }                                \
-                }
+            for(;;) {                        \
+                int run;                        \
+                ofs += *(Type *)srcbuf;        \
+                run = ((Type *)srcbuf)[1];        \
+                srcbuf += sizeof(Type) * 2;        \
+                if(run) {                        \
+                    srcbuf += run * bpp;        \
+                    ofs += run;                \
+                } else if(!ofs)                \
+                    goto done;                \
+                if(ofs == w) {                \
+                    ofs = 0;                \
+                    if(!--vskip)                \
+                        break;                \
+                }                                \
+            }

-                switch(src->format->BytesPerPixel) {
-                case 1: RLESKIP(1, Uint8); break;
-                case 2: RLESKIP(2, Uint8); break;
-                case 3: RLESKIP(3, Uint8); break;
-                case 4: RLESKIP(4, Uint16); break;
-                }
+            switch(src->format->BytesPerPixel) {
+            case 1: RLESKIP(1, Uint8); break;
+            case 2: RLESKIP(2, Uint8); break;
+            case 3: RLESKIP(3, Uint8); break;
+            case 4: RLESKIP(4, Uint16); break;
+            }

 #undef RLESKIP

-            }
        }
+    }

-        alpha = (src->flags & GAL_SRCALPHA) == GAL_SRCALPHA
-                ? src->format->alpha : 255;
-        /* if left or right edge clipping needed, call clip blit */
-        if ( srcrect->x || srcrect->w != src->w ) {
-            RLEClipBlit(w, srcbuf, dst, dstbuf, srcrect, alpha);
-        } else {
-            GAL_PixelFormat *fmt = src->format;
+    alpha = (src->flags & GAL_SRCALPHA) == GAL_SRCALPHA
+            ? src->format->alpha : 255;
+    /* if left or right edge clipping needed, call clip blit */
+    if ( srcrect->x || srcrect->w != src->w ) {
+        RLEClipBlit(w, srcbuf, dst, dstbuf, srcrect, alpha);
+    } else {
+        GAL_PixelFormat *fmt = src->format;

 #define RLEBLIT(bpp, Type, do_blit)                                              \
-            do {                                                              \
-                int linecount = srcrect->h;                                      \
-                int ofs = 0;                                                      \
-                for(;;) {                                                      \
-                    unsigned run;                                              \
-                    ofs += *(Type *)srcbuf;                                      \
-                    run = ((Type *)srcbuf)[1];                                      \
-                    srcbuf += 2 * sizeof(Type);                                      \
-                    if(run) {                                                      \
-                        do_blit(dstbuf + ofs * bpp, srcbuf, run, bpp, alpha); \
-                        srcbuf += run * bpp;                                      \
-                        ofs += run;                                              \
-                    } else if(!ofs)                                              \
-                        break;                                                      \
-                    if(ofs == w) {                                              \
-                        ofs = 0;                                              \
-                        dstbuf += dst->pitch;                                      \
-                        if(!--linecount)                                      \
-                            break;                                              \
-                    }                                                              \
+        do {                                                              \
+            int linecount = srcrect->h;                                      \
+            int ofs = 0;                                                      \
+            for(;;) {                                                      \
+                unsigned run;                                              \
+                ofs += *(Type *)srcbuf;                                      \
+                run = ((Type *)srcbuf)[1];                                      \
+                srcbuf += 2 * sizeof(Type);                                      \
+                if(run) {                                                      \
+                    do_blit(dstbuf + ofs * bpp, srcbuf, run, bpp, alpha); \
+                    srcbuf += run * bpp;                                      \
+                    ofs += run;                                              \
+                } else if(!ofs)                                              \
+                    break;                                                      \
+                if(ofs == w) {                                              \
+                    ofs = 0;                                              \
+                    dstbuf += dst->pitch;                                      \
+                    if(!--linecount)                                      \
+                        break;                                              \
                }                                                              \
-            } while(0)
+            }                                                              \
+        } while(0)

-            CHOOSE_BLIT(RLEBLIT, alpha, fmt);
+        CHOOSE_BLIT(RLEBLIT, alpha, fmt);

 #undef RLEBLIT
-        }
+    }

 done:
-        return(0);
+    return(0);
 }

 #undef OPAQUE_BLIT
@@ -720,9 +721,12 @@ static void RLEAlphaClipBlit(int w, Uint8 *srcbuf, GAL_Surface *dst,
 }

 /* blit a pixel-alpha RLE surface */
-int GAL_RLEAlphaBlit(GAL_Surface *src, GAL_Rect *srcrect,
-                     GAL_Surface *dst, GAL_Rect *dstrect)
+int GAL_RLEAlphaBlit(GAL_VideoDevice *video,
+        GAL_Surface *src, GAL_Rect *srcrect,
+        GAL_Surface *dst, GAL_Rect *dstrect)
 {
+    (void)video;
+
    int x, y;
    int w = src->w;
    Uint8 *srcbuf, *dstbuf;
@@ -1502,7 +1506,7 @@ void GAL_UnRLESurface(GAL_Surface *surface, int recode)
                full.h = surface->h;
                alpha_flag = surface->flags & GAL_SRCALPHA;
                surface->flags &= ~GAL_SRCALPHA; /* opaque blit */
-                GAL_RLEBlit(surface, &full, surface, &full);
+                GAL_RLEBlit(NULL, surface, &full, surface, &full);
                surface->flags |= alpha_flag;
            } else
                UnRLEAlpha(surface);
@@ -47,9 +47,11 @@
 /* Useful functions and variables from RLEaccel.c */

 extern int GAL_RLESurface(GAL_Surface *surface);
-extern int GAL_RLEBlit(GAL_Surface *src, GAL_Rect *srcrect,
-                       GAL_Surface *dst, GAL_Rect *dstrect);
-extern int GAL_RLEAlphaBlit(GAL_Surface *src, GAL_Rect *srcrect,
-                GAL_Surface *dst, GAL_Rect *dstrect);
+extern int GAL_RLEBlit(GAL_VideoDevice *video,
+        GAL_Surface *src, GAL_Rect *srcrect,
+        GAL_Surface *dst, GAL_Rect *dstrect);
+extern int GAL_RLEAlphaBlit(GAL_VideoDevice *video,
+        GAL_Surface *src, GAL_Rect *srcrect,
+        GAL_Surface *dst, GAL_Rect *dstrect);
 extern void GAL_UnRLESurface(GAL_Surface *surface, int recode);

@@ -157,8 +157,6 @@ static GAL_VideoDevice *BF533_CreateDevice(int devindex)
    device->AllocHWSurface = BF533_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = BF533_FreeHWSurface;
    device->UpdateRects = BF533_UpdateRects;

@@ -57,9 +57,12 @@
 #include "memops.h"

 /* The general purpose software blit routine */
-static int GAL_SoftBlit(GAL_Surface *src, GAL_Rect *srcrect,
-            GAL_Surface *dst, GAL_Rect *dstrect)
+static int GAL_SoftBlit(GAL_VideoDevice *video,
+        GAL_Surface *src, GAL_Rect *srcrect,
+        GAL_Surface *dst, GAL_Rect *dstrect)
 {
+    (void)video;
+
    int okay;

    /* Everything is okay at the beginning...  */
@@ -166,12 +169,14 @@ static void GAL_BlitCopyOverlap(GAL_BlitInfo *info)
 #ifdef _MGUSE_PIXMAN
 #include <pixman.h>

-static int GAL_PixmanBlit (struct GAL_Surface *src, GAL_Rect *srcrect,
+static int GAL_PixmanBlit(GAL_VideoDevice *video,
+        struct GAL_Surface *src, GAL_Rect *srcrect,
        struct GAL_Surface *dst, GAL_Rect *dstrect);
 #endif

 /* Figure out which of many blit routines to set up on a surface */
-int GAL_CalculateBlit(GAL_Surface *surface)
+int GAL_CalculateBlit(GAL_Surface *surface, const GAL_Rect *srcrc,
+        const GAL_Rect *dstrc, DWORD op)
 {
    int blit_index;
    GAL_VideoDevice *src_video, *dst_video, *cur_video = NULL;
@@ -242,7 +247,8 @@ int GAL_CalculateBlit(GAL_Surface *surface)
        if (hw_blit_ok && cur_video) {
            GAL_VideoDevice *video = cur_video;
            GAL_VideoDevice *this  = cur_video;
-            video->CheckHWBlit (this, surface, surface->map->dst);
+            video->CheckHWBlit (this, surface, srcrc,
+                    surface->map->dst, dstrc, op);
        }
    }

@@ -343,7 +349,7 @@ int GAL_SetupBlitting (GAL_Surface *src, GAL_Surface *dst, DWORD ops)
        else
            src->msk_img = NULL;

-        ops &= COLOR_BLEND_FLAGS_MASK;
+        ops &= COLOR_BLEND_PIXMAN_MASK;
        if (ops == COLOR_BLEND_LEGACY) {
            if ((src->flags & GAL_SRCPIXELALPHA) && src->format->Amask && src != dst) {
                src->pix_op = PIXMAN_OP_OVER;
@@ -381,9 +387,12 @@ int GAL_CleanupBlitting (GAL_Surface *src, GAL_Surface *dst)
    return 0;
 }

-static int GAL_PixmanBlit (struct GAL_Surface *src, GAL_Rect *srcrect,
+static int GAL_PixmanBlit (GAL_VideoDevice *video,
+        struct GAL_Surface *src, GAL_Rect *srcrect,
        struct GAL_Surface *dst, GAL_Rect *dstrect)
 {
+    (void)video;
+
    pixman_image_t *src_img = src->pix_img, *dst_img = dst->pix_img;
    pixman_image_t *msk_img;
    pixman_op_t op;
@@ -80,7 +80,11 @@ typedef struct GAL_BlitMap {
    Uint8 *table;
    GAL_blit hw_blit;
    GAL_blit sw_blit;
+    GAL_VideoDevice *video;
+
+    /* data for hardware blittor */
    struct private_hwaccel *hw_data;
+    /* data for software blittor */
    struct private_swaccel *sw_data;

    int identity;
@@ -94,7 +98,8 @@ typedef struct GAL_BlitMap {
 #include "blit_A.h"

 /* Functions found in GAL_blit.c */
-extern int GAL_CalculateBlit(GAL_Surface *surface);
+extern int GAL_CalculateBlit(GAL_Surface *surface, const GAL_Rect *srcrc,
+        const GAL_Rect *dstrc, DWORD op);

 /* Functions found in GAL_blit_{0,1,N,A}.c */
 extern GAL_loblit GAL_CalculateBlit0(GAL_Surface *surface, int complex);
@@ -236,8 +236,6 @@ static GAL_VideoDevice *COMMLCD_CreateDevice (int devindex)
    device->FreeHWSurface = COMMLCD_FreeHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->UpdateRects = NULL;
    device->SyncUpdate = NULL;

@@ -107,7 +107,7 @@ static int DFB_AllocHWSurface (_THIS, GAL_Surface *surface);
 static void DFB_FreeHWSurface (_THIS, GAL_Surface *surface);
 static int DFB_HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect, GAL_Surface *dst, GAL_Rect *dstrect);
 static int DFB_CheckHWBlit (_THIS, GAL_Surface * src, GAL_Surface * dst);
-static int DFB_FillHWRect (_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color);
+static int DFB_FillHWRect (_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color);

 /* common dfb function address */
 GAL_FunctionTable mgGALFuncTable = {
@@ -173,8 +173,6 @@ static GAL_VideoDevice *DFB_CreateDevice (int devindex)
        device->AllocHWSurface = DFB_AllocHWSurface;
        device->CheckHWBlit = DFB_CheckHWBlit;
        device->FillHWRect = DFB_FillHWRect;
-        device->SetHWColorKey = NULL;
-        device->SetHWAlpha = NULL;
        device->FreeHWSurface = DFB_FreeHWSurface;
        device->free = DFB_DeleteDevice;

@@ -518,7 +516,8 @@ static void DFB_RequestHWSurface (_THIS, const REQ_HWSURFACE* request, REP_HWSUR
    }
 }

-static int DFB_FillHWRect (_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int
+DFB_FillHWRect (_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    if ((dst->hwdata == NULL && dst != GAL_VideoSurface)) {
        fprintf(stderr, "NEWGAL>DFB: src_hwdata or dst_hwdata NULL\n");
@@ -111,7 +111,7 @@ typedef struct _GAL_FunctionTable {
    int (*AllocHWSurface)(_THIS, GAL_Surface *surface);
    int (*CheckHWBlit)(_THIS, GAL_Surface *src, GAL_Surface *dst);
    int (*HWAccelBlit)(GAL_Surface *src, GAL_Rect *srcrect, GAL_Surface *dst, GAL_Rect *dstrect);
-    int (*FillHWRect)(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color);
+    int (*FillHWRect)(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color);
    int (*SetHWColorKey)(_THIS, GAL_Surface *surface, Uint32 key);
    int (*SetHWAlpha)(_THIS, GAL_Surface *surface, Uint8 value);
    void (*FreeHWSurface)(_THIS, GAL_Surface *surface);
@@ -53,10 +53,12 @@
 #ifndef _MGSCHEMA_COMPOSITING
 #include <fcntl.h>           /* For O_* constants */
 #include <sys/stat.h>        /* For mode constants */
+#endif
+
+#include <pthread.h>
 #include <semaphore.h>

-#define SEM_UPDATE_LOCK     "mginit-drm-update"
-#endif
+#define SEM_UPDATE_LOCK     "minigui-drm-update"

 /* Hidden "this" pointer for the video functions */
 #define _THIS   GAL_VideoDevice *this
@@ -85,9 +87,10 @@ typedef struct GAL_PrivateVideoData {

    /* the global names of real screen and shadow screen */
    uint32_t        real_name, shadow_name;
-    sem_t *update_lock;
 #endif  /* not defined _MGSCHEMA_COMPOSITING */

+    sem_t *update_lock;
+
 #if !IS_SHAREDFB_SCHEMA_PROCS
    RECT dirty_rc;
 #endif
@@ -100,8 +103,11 @@ typedef struct GAL_PrivateVideoData {
    uint32_t        cap_cursor_width;
    uint32_t        cap_cursor_height;
    uint32_t        cap_dumb:1;
+    uint32_t        cap_vblank_high_crtc:1;
    uint32_t        dbl_buff:1;
+    uint32_t        dirty_fb_ok:1;
    uint32_t        scanout_buff_id;
+    int             crtc_idx;

    void*           exdrv_handle;
    DrmDriverOps*   driver_ops;
@@ -113,10 +119,20 @@ typedef struct GAL_PrivateVideoData {
    DrmModeInfo*    saved_info;
    drmModeCrtc*    saved_crtc;

-#if 0   /* deprecated code */
-    uint32_t        console_buff_id;
-    uint8_t*        scanout_fb;
-#endif  /* deprecated code */
+    int             min_pixels_using_hwaccl;
+
+    /* async updater */
+    int             updater_ready;
+    int             update_interval;
+    RECT            update_rect;
+    pthread_t       update_thd;
+    sem_t           sync_sem;
+
+#ifdef _DEBUG
+    struct timespec ts_start;
+    unsigned        frames;
+#endif
+
 } DrmVideoData;

 #endif /* _NEWGAL_DRIVIDEO_H */
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Framework for buffer objects that can be shared across devices/subsystems.
+ *
+ * Copyright(C) 2015 Intel Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DMA_BUF_UAPI_H_
+#define _DMA_BUF_UAPI_H_
+
+#include <linux/types.h>
+
+/* begin/end dma-buf functions used for userspace mmap. */
+struct dma_buf_sync {
+	__u64 flags;
+};
+
+#define DMA_BUF_SYNC_READ      (1 << 0)
+#define DMA_BUF_SYNC_WRITE     (2 << 0)
+#define DMA_BUF_SYNC_RW        (DMA_BUF_SYNC_READ | DMA_BUF_SYNC_WRITE)
+#define DMA_BUF_SYNC_START     (0 << 2)
+#define DMA_BUF_SYNC_END       (1 << 2)
+#define DMA_BUF_SYNC_VALID_FLAGS_MASK \
+	(DMA_BUF_SYNC_RW | DMA_BUF_SYNC_END)
+
+#define DMA_BUF_BASE		'b'
+#define DMA_BUF_IOCTL_SYNC	_IOW(DMA_BUF_BASE, 0, struct dma_buf_sync)
+
+#endif
@@ -139,8 +139,6 @@ static GAL_VideoDevice *DUMMY_CreateDevice(int devindex)
    device->AllocHWSurface = DUMMY_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = DUMMY_FreeHWSurface;

    device->free = DUMMY_DeleteDevice;
@@ -183,8 +183,6 @@ static GAL_VideoDevice *EM85XXOSD_CreateDevice(int devindex)
    device->AllocHWSurface = EM85XXOSD_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = EM85XXOSD_FreeHWSurface;
    device->UpdateRects = EM85XXOSD_UpdateRects;

@@ -454,8 +454,6 @@ static GAL_VideoDevice *EM85XXYUV_CreateDevice(int devindex)
    device->AllocHWSurface = EM85XXYUV_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = EM85XXYUV_FreeHWSurface;
    device->UpdateRects = EM85XXYUV_UpdateRects;

@@ -69,7 +69,7 @@ static int GFX_VideoInit(_THIS, GAL_PixelFormat * vformat);
 static GAL_Rect ** GFX_ListModes(_THIS, GAL_PixelFormat * format, Uint32 flags);
 static GAL_Surface * GFX_SetVideoMode(_THIS, GAL_Surface * current, int width, int height, int bpp, Uint32 flags);
 static void GFX_VideoQuit(_THIS);
-static int GFX_FillHWRect(_THIS, GAL_Surface * dst, GAL_Rect * rect, Uint32 color);
+static int GFX_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color);
 static int GFX_AllocHWSurface(_THIS, GAL_Surface * surface);
 static void GFX_FreeHWSurface(_THIS, GAL_Surface * surface);
 static int GFX_HWAccelBlit(GAL_Surface * src, GAL_Rect * srcrect, GAL_Surface * dst, GAL_Rect * dstrect);
@@ -112,8 +112,6 @@ static GAL_VideoDevice * GFX_CreateDevice(int devindex)
    this->AllocHWSurface = GFX_AllocHWSurface;
    this->CheckHWBlit = GFX_CheckHWBlit;
    this->FillHWRect = GFX_FillHWRect;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;
    this->UpdateRects = NULL;
    this->FreeHWSurface = GFX_FreeHWSurface;

@@ -298,7 +296,8 @@ static void GFX_VideoQuit (_THIS)
    return;
 }

-static int GFX_FillHWRect(_THIS, GAL_Surface * surface, GAL_Rect * rect, Uint32 color)
+static int
+GFX_FillHWRect(_THIS, GAL_Surface *surface, const GAL_Rect *rect, Uint32 color)
 {
    struct GFXEngine_FillRectangle_type fill_param;
    struct GFXEngine_Surface_type surface_param;
@@ -68,13 +68,7 @@ static void WaitIdle(_THIS)
    tdfx_waitidle();
 }

-/* Set video mem colorkey and accelerated blit function */
-static int SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key)
-{
-    return(0);
-}
-
-static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    int bpp;
    char *dst_base;
@@ -106,10 +100,9 @@ static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
    return(0);
 }

-static int HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect,
+static int HWAccelBlit(_THIS, GAL_Surface *src, GAL_Rect *srcrect,
                       GAL_Surface *dst, GAL_Rect *dstrect)
 {
-    GAL_VideoDevice *this = __mg_current_video;
    int bpp;
    Uint32 src_format;
    /* Uint32 dst_format; */
@@ -175,8 +168,11 @@ static int HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect,
    return(0);
 }

-static int CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)
+static int CheckHWBlit(_THIS, GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op)
 {
+    (void)srcrc;
+    (void)dstrc;
    int accelerated;

    /* Set initial acceleration on */
@@ -194,11 +190,24 @@ static int CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)
        }
    }

+    /* color blend, logical operation, and scaling filter are not supported */
+    if ((op & COLOR_BLEND_MASK) ||
+            ((op & COLOR_LOGICOP_MASK) != COLOR_LOGICOP_COPY) ||
+            (op & SCALING_FILTER_MASK)) {
+        src->flags &= ~GAL_HWACCEL;
+    }
+
    /* Check to see if final surface blit is accelerated */
    accelerated = !!(src->flags & GAL_HWACCEL);
    if ( accelerated ) {
+        src->map->video = this;
        src->map->hw_blit = HWAccelBlit;
    }
+    else {
+        src->map->video = NULL;
+        src->map->hw_blit = NULL;
+    }
+
    return(accelerated);
 }

@@ -220,5 +229,4 @@ void FB_3DfxAccel(_THIS, __u32 card)
    /* The 3Dfx has accelerated normal and colorkey blits */
    this->info.blit_hw = 1;
    this->info.blit_hw_CC = 1;
-    this->SetHWColorKey = SetHWColorKey;
 }
@@ -74,21 +74,7 @@ static void WaitIdle(_THIS)
    mga_waitidle();
 }

-/* Set video mem colorkey and accelerated blit function */
-static int SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key)
-{
-    return(0);
-}
-
-/* Set per surface hardware alpha value */
-#if 0
-static int SetHWAlpha(_THIS, GAL_Surface *surface, Uint8 value)
-{
-    return(0);
-}
-#endif
-
-static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    int dstX, dstY;
    Uint32 fxbndry;
@@ -132,10 +118,9 @@ static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
    return(0);
 }

-static int HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect,
+static int HWAccelBlit(_THIS, GAL_Surface *src, GAL_Rect *srcrect,
                       GAL_Surface *dst, GAL_Rect *dstrect)
 {
-    GAL_VideoDevice *this = __mg_current_video;
    int pitch, w, h;
    int srcX, srcY;
    int dstX, dstY;
@@ -146,7 +131,7 @@ static int HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect,

    /* FIXME: For now, only blit to display surface */
    if ( dst->pitch != GAL_VideoSurface->pitch ) {
-        return(src->map->sw_blit(src, srcrect, dst, dstrect));
+        return(src->map->sw_blit(this, src, srcrect, dst, dstrect));
    }

    /* Calculate source and destination base coordinates (in pixels) */
@@ -224,8 +209,11 @@ static int HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect,
    return(0);
 }

-static int CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)
+static int CheckHWBlit(_THIS, GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op)
 {
+    (void)srcrc;
+    (void)dstrc;
    int accelerated;

    /* Set initial acceleration on */
@@ -243,11 +231,24 @@ static int CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)
        }
    }

+    /* color blend, logical operation, and scaling filter are not supported */
+    if ((op & COLOR_BLEND_MASK) ||
+            ((op & COLOR_LOGICOP_MASK) != COLOR_LOGICOP_COPY) ||
+            (op & SCALING_FILTER_MASK)) {
+        src->flags &= ~GAL_HWACCEL;
+    }
+
    /* Check to see if final surface blit is accelerated */
    accelerated = !!(src->flags & GAL_HWACCEL);
    if ( accelerated ) {
+        src->map->video = this;
        src->map->hw_blit = HWAccelBlit;
    }
+    else {
+        src->map->video = NULL;
+        src->map->hw_blit = NULL;
+    }
+
    return(accelerated);
 }

@@ -269,7 +270,6 @@ void FB_MatroxAccel(_THIS, __u32 card)
     */
    if ( card != FB_ACCEL_MATROX_MGA2064W ) {
        this->info.blit_hw_CC = 1;
-        this->SetHWColorKey = SetHWColorKey;
    }

 #if 0 /* Not yet implemented? */
@@ -95,12 +95,6 @@ static void WaitIdle(_THIS)
        ;
 }

-/* Set video mem colorkey and accelerated blit function */
-static int SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key)
-{
-    return 0;
-}
-
 static inline void validate_dst (_THIS, GAL_Surface* dst)
 {
    int bltMode = 0;
@@ -121,7 +115,7 @@ static inline void validate_dst (_THIS, GAL_Surface* dst)
  neo2200->pitch = (dst->pitch << 16) | (dst->pitch & 0xFFFF);
 }

-static int FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    char *dst_base;

@@ -195,9 +189,11 @@ static void make_rects (GAL_Rect *src, GAL_Rect* dst, const RECT* rc, Uint32 x,
    dst->h = src->h;
 }

-static int HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect,
+static int HWAccelBlit (_THIS, GAL_Surface *src, GAL_Rect *srcrect,
                       GAL_Surface *dst, GAL_Rect *dstrect)
 {
+    (void)this;
+
    RECT rc_src = {srcrect->x, srcrect->y, srcrect->x + srcrect->w, srcrect->y + srcrect->h};
    RECT rc_dst = {dstrect->x, dstrect->y, dstrect->x + dstrect->w, dstrect->y + dstrect->h};
    RECT rc_inter, rc_sub [4];
@@ -241,8 +237,11 @@ static int HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect,
    return(0);
 }

-static int CheckHWBlit (_THIS, GAL_Surface *src, GAL_Surface *dst)
+static int CheckHWBlit(_THIS, GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op)
 {
+    (void)srcrc;
+    (void)dstrc;
    int accelerated;

    /* Set initial acceleration on */
@@ -260,14 +259,27 @@ static int CheckHWBlit (_THIS, GAL_Surface *src, GAL_Surface *dst)
        }
    }

+    /* color blend, logical operation, and scaling filter are not supported */
+    if ((op & COLOR_BLEND_MASK) ||
+            ((op & COLOR_LOGICOP_MASK) != COLOR_LOGICOP_COPY) ||
+            (op & SCALING_FILTER_MASK)) {
+        src->flags &= ~GAL_HWACCEL;
+    }
+
    if (src->format->BitsPerPixel > 16)
        src->flags &= ~GAL_HWACCEL;

    /* Check to see if final surface blit is accelerated */
    accelerated = !!(src->flags & GAL_HWACCEL);
    if ( accelerated ) {
+        src->map->video = this;
        src->map->hw_blit = HWAccelBlit;
    }
+    else {
+        src->map->video = NULL;
+        src->map->hw_blit = NULL;
+    }
+
    return(accelerated);
 }

@@ -287,7 +299,6 @@ void FB_NeoMagicAccel(_THIS, __u32 card)
    /* The NeoMagic has accelerated normal and colorkey blits */
    this->info.blit_hw = 1;
    this->info.blit_hw_CC = 1;
-    this->SetHWColorKey = SetHWColorKey;
 }

 #endif /* FB_ACCEL_NEOMAGIC_NM2070 */
@@ -47,6 +47,8 @@
 #ifndef _GAL_fbvideo_h
 #define _GAL_fbvideo_h

+#include <pthread.h>
+#include <semaphore.h>
 #include <sys/types.h>
 #include <termios.h>
 #include <linux/fb.h>
@@ -95,12 +97,19 @@ struct GAL_PrivateVideoData {
    int saved_cmaplen;
    __u16 *saved_cmap;

-    /* Since 5.0.13, use FBIOPAN_DISPLAY if possible */
-    int nr_buffers;
-    int idx_buffer;
-    unsigned len_buffer;
-    char *buffers[2];
+    /* Since 5.0.13, async updater */
+    int             updater_ready;
+    int             update_interval;
+    RECT            update_rect;
+    pthread_t       update_thd;
+    pthread_mutex_t update_lock;
+    sem_t           sync_sem;

+#ifdef _DEBUG
+    struct timespec ts_start;
+    unsigned        frames;
+
+#endif
 #ifdef _MGHAVE_PCIACCESS
    int pci_accel_driver;
 #endif
@@ -715,7 +715,7 @@ static void SMI_SubsequentScreenToScreenCopy (int x1, int y1, int x2,
    WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
 }

-static int SMI_FillHWRect (_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int SMI_FillHWRect (_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    SMIPtr pSmi = &smi_rec;
    int x = rect->x;
@@ -770,9 +770,11 @@ static void SMI_BlitTransRect (int srcx, int srcy, int w, int h, int dstx,
 #endif
 }

-static int SMI_HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect,
+static int SMI_HWAccelBlit (_THIS, GAL_Surface *src, GAL_Rect *srcrect,
                       GAL_Surface *dst, GAL_Rect *dstrect)
 {
+    (void)this;
+
    SMIPtr pSmi = &smi_rec;
    int srcx = srcrect->x;
    int srcy = srcrect->y;
@@ -825,14 +827,11 @@ static void SMI_WaitIdle (_THIS)
 #endif
 }

-/* Set video mem colorkey and accelerated blit function */
-static int SMI_SetHWColorKey (_THIS, GAL_Surface *surface, Uint32 key)
-{
-    return 0;
-}
-
-static int SMI_CheckHWBlit (_THIS, GAL_Surface *src, GAL_Surface *dst)
+static int SMI_CheckHWBlit (_THIS, GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op)
 {
+    (void)srcrc;
+    (void)dstrc;
    int accelerated;

    /* Set initial acceleration on */
@@ -851,11 +850,23 @@ static int SMI_CheckHWBlit (_THIS, GAL_Surface *src, GAL_Surface *dst)
        src->flags &= ~GAL_HWACCEL;
    }

+    /* color blend, logical operation, and scaling filter are not supported */
+    if ((op & COLOR_BLEND_MASK) ||
+            ((op & COLOR_LOGICOP_MASK) != COLOR_LOGICOP_COPY) ||
+            (op & SCALING_FILTER_MASK)) {
+        src->flags &= ~GAL_HWACCEL;
+    }
+
    /* Check to see if final surface blit is accelerated */
    accelerated = !!(src->flags & GAL_HWACCEL);
    if (accelerated) {
+        src->map->video = this;
        src->map->hw_blit = SMI_HWAccelBlit;
    }
+    else {
+        src->map->video = NULL;
+        src->map->hw_blit = NULL;
+    }

    return (accelerated);
 }
@@ -898,7 +909,6 @@ static int SMI_Init (_THIS, const GAL_Surface* current)
    this->info.blit_hw = 1;
    this->info.blit_hw_A = 0;
    this->info.blit_hw_CC = 1;
-    this->SetHWColorKey = SMI_SetHWColorKey;
    return 0;
 }

@@ -116,8 +116,6 @@ static GAL_VideoDevice *GDL_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = GDL_DeleteDevice;

@@ -242,8 +242,6 @@ static GAL_VideoDevice *HI3560A_CreateDevice(int devindex)
    device->AllocHWSurface = HI3560A_AllocHWSurface;
    device->CheckHWBlit = HI3560A_CheckHWBlit;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FillHWRect = HI3560A_FillHWRect;
    device->FreeHWSurface = HI3560A_FreeHWSurface;

@@ -994,7 +992,7 @@ static int HI3560A_AllocHWSurface(_THIS, GAL_Surface *surface)
    }
 }

-static int HI3560A_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int HI3560A_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    TDE_HANDLE tdeHandle;
    int ret = 0;
@@ -501,7 +501,7 @@ static int HI3510_CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)
 }

 /* Fills a surface rectangle with the given color */
-static int HI3510_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int HI3510_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    Uint8 r,g,b;
    Uint8* pvirtual_addr;
@@ -1863,8 +1863,6 @@ static GAL_VideoDevice *HI3510_CreateDevice (int devindex)
 #endif
    this->FreeHWSurface = HI3510_FreeHWSurface;
    this->free = HI3510_DeleteDevice;
-    this->SetHWAlpha = NULL;
-    this->SetHWColorKey = NULL;

    return this;
 }
@@ -675,7 +675,7 @@ static int HI3560_CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst)

 }

-static Sint32 Hi3560_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static Sint32 Hi3560_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    TDE_SURFACE_S surface ={0};
    TDE_OPT_S param;
@@ -1855,8 +1855,6 @@ static GAL_VideoDevice *HI3560_CreateDevice (int devindex)
 //#endif
 #endif
    this->FreeHWSurface = HI3560_FreeHWSurface;
-    this->SetHWAlpha = NULL;
-    this->SetHWColorKey = NULL;
    this->free = HI3560_DeleteDevice;
    //this->SetAttr   = HI3560_SetLayerAttr;

@@ -251,8 +251,6 @@ static GAL_VideoDevice *MB93493_CreateDevice(int devindex)
    device->AllocHWSurface = MB93493_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = MB93493_FreeHWSurface;
    device->UpdateRects = MB93493_UpdateRects;
    device->free = MB93493_DeleteDevice;
@@ -335,8 +335,6 @@ static GAL_VideoDevice *MLSHADOW_CreateDevice (int devindex)
        device->AllocHWSurface = MLSHADOW_AllocHWSurface;
        device->CheckHWBlit = NULL;
        device->FillHWRect = NULL;
-        device->SetHWColorKey = NULL;
-        device->SetHWAlpha = NULL;
        device->FreeHWSurface = MLSHADOW_FreeHWSurface;
        device->UpdateRects = MLSHADOW_UpdateRects;
        device->DeleteSurface = MLSHADOW_DeleteSurface;
@@ -485,8 +485,6 @@ static GAL_VideoDevice *MLSHADOW_CreateDevice (int devindex)
        device->AllocHWSurface = MLSHADOW_AllocHWSurface;
        device->CheckHWBlit = NULL;
        device->FillHWRect = NULL;
-        device->SetHWColorKey = NULL;
-        device->SetHWAlpha = NULL;
        device->FreeHWSurface = MLSHADOW_FreeHWSurface;
        device->UpdateRects = MLSHADOW_UpdateRects;
        device->DeleteSurface = MLSHADOW_DeleteSurface;
@@ -106,12 +106,10 @@ static void MStar_VideoQuit(_THIS);
 /* Hardware surface functions */
 static int MStar_InitHWSurfaces(_THIS, GAL_Surface *screen, char *base, int size);
 static int MStar_AllocHWSurface(_THIS, GAL_Surface *surface);
-static int MStar_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *dstrect, Uint32 color);
+static int MStar_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *dstrect, Uint32 color);
 static void MStar_FreeHWSurface(_THIS, GAL_Surface *surface);
 static int MStar_CheckHWBlit(_THIS, GAL_Surface *src, GAL_Surface *dst);
 static int MStar_HWAccelBlit(GAL_Surface *src, GAL_Rect *srcrect, GAL_Surface *dst, GAL_Rect *dstrect);
-static int MStar_SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key);
-static int MStar_SetHWAlpha(_THIS, GAL_Surface *surface, Uint8 alpha);

 /* Various screen update functions available */
 static void MStar_DirectUpdate(_THIS, int numrects, GAL_Rect *rects);
@@ -190,8 +188,10 @@ static GAL_VideoDevice * MStar_CreateDevice(int devindex)
    device->AllocHWSurface = MStar_AllocHWSurface;
    device->CheckHWBlit = MStar_CheckHWBlit;
    device->FillHWRect = MStar_FillHWRect;
+#if 0
    device->SetHWColorKey = MStar_SetHWColorKey;
    device->SetHWAlpha = MStar_SetHWAlpha;
+#endif
    device->FreeHWSurface = MStar_FreeHWSurface;
    device->UpdateRects = MStar_DirectUpdate;
    device->UpdateSurfaceRects = NULL;
@@ -725,7 +725,7 @@ void cleanEngineState(MSTARDeviceData *sdev)
    sdev->dst_ge_format = GFX_FMT_ARGB8888;
 }

-static int MStar_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int MStar_FillHWRect(_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    GFX_RectFillInfo rectInfo;
    GFX_Point v0, v1;
@@ -773,6 +773,7 @@ static int MStar_FillHWRect(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 colo
    return 0;
 }

+#if 0
 static int MStar_SetHWColorKey(_THIS, GAL_Surface *src, Uint32 key)
 {
    FUNC_ENTER();
@@ -790,6 +791,7 @@ static int MStar_SetHWAlpha(_THIS, GAL_Surface *surface, Uint8 alpha)
    FUNC_LEAVE();
    return 0;
 }
+#endif

 static void MStar_DirectUpdate(_THIS, int numrects, GAL_Rect *rects)
 {
@@ -240,12 +240,14 @@ static GAL_Surface* create_wp_surface(GAL_Surface* screen)
        req.len_data = strlen (SYSSF_WALLPAPER_PATTER) + 1;

        if ((ClientRequestEx2 (&req, NULL, 0, -1,
-                &info, sizeof (SHAREDSURFINFO), &fd) < 0) || (fd < 0))
+                &info, sizeof (SHAREDSURFINFO), &fd) < 0) || (fd < 0)) {
+            _WRN_PRINTF ("creating an empty wallpaper pattern surface\n");
            goto empty;
+        }

        _DBG_PRINTF ("REQID_GETSHAREDSURFACE: size (%lu), flags (0x%x), fd: %d\n",
                    info.size, info.flags, fd);
-        wp_surf = GAL_AttachSharedRGBSurface (fd, info.size,
+        wp_surf = GAL_AttachSharedRGBSurface (NULL, fd, info.size,
            info.flags, TRUE);
        close (fd);

@@ -253,7 +255,6 @@ static GAL_Surface* create_wp_surface(GAL_Surface* screen)
    }

 empty:
-    _DBG_PRINTF ("creating an empty wallpaper pattern surface\n");
    if (IsServer()) {
        return GAL_CreateRGBSurface (GAL_SWSURFACE, 0, 0,
                    screen->format->BitsPerPixel,
@@ -83,9 +83,9 @@ static REP_NEXUS_GETSURFACE reply_primary_surface_info;
 /* Initialization/Query functions */
 static int NEXUS_VideoInit(_THIS, GAL_PixelFormat * vformat);
 static GAL_Rect **NEXUS_ListModes(_THIS, GAL_PixelFormat * format,
-                                  Uint32 flags);
-static GAL_Surface *NEXUS_SetVideoMode(_THIS, GAL_Surface * current, int width,
-                                       int height, int bpp, Uint32 flags);
+        Uint32 flags);
+static GAL_Surface *NEXUS_SetVideoMode(_THIS, GAL_Surface *current,
+        int width, int height, int bpp, Uint32 flags);
 static int NEXUS_SetColors(_THIS, int firstcolor, int ncolors,
                           GAL_Color * colors);
 static void NEXUS_VideoQuit(_THIS);
@@ -93,8 +93,8 @@ static void NEXUS_VideoQuit(_THIS);
 /* Hardware surface functions */
 static int NEXUS_AllocHWSurface(_THIS, GAL_Surface * surface);
 static void NEXUS_FreeHWSurface(_THIS, GAL_Surface * surface);
-static int NEXUS_FillHWRect(_THIS, GAL_Surface * dst, GAL_Rect * rect,
-                            Uint32 color);
+static int NEXUS_FillHWRect(_THIS, GAL_Surface * dst, const GAL_Rect * rect,
+        Uint32 color);
 static void NEXUS_UpdateSurfaceRects(_THIS, GAL_Surface* surface,
        int numrects, GAL_Rect *rects);
 static int NEXUS_CheckHWBlit(_THIS, GAL_Surface * src, GAL_Surface * dst);
@@ -114,11 +114,6 @@ NEXUS_DeleteDevice(GAL_VideoDevice * device)
    free(device);
 }

-static int NEXUS_SetHWColorKey(_THIS, GAL_Surface *surface, Uint32 key)
-{
-    return 0;
-}
-
 static GAL_VideoDevice *
 NEXUS_CreateDevice(int devindex)
 {
@@ -152,8 +147,6 @@ NEXUS_CreateDevice(int devindex)
    device->AllocHWSurface = NEXUS_AllocHWSurface;
    device->CheckHWBlit = NEXUS_CheckHWBlit;
    device->FillHWRect = NEXUS_FillHWRect;
-    device->SetHWColorKey = NEXUS_SetHWColorKey;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = NEXUS_FreeHWSurface;
    device->UpdateRects = NULL;
    device->UpdateSurfaceRects = NEXUS_UpdateSurfaceRects;
@@ -455,7 +448,7 @@ NEXUS_FreeHWSurface(_THIS, GAL_Surface * surface)
 }

 static int
-NEXUS_FillHWRect(_THIS, GAL_Surface * dst, GAL_Rect * rect, Uint32 color)
+NEXUS_FillHWRect(_THIS, GAL_Surface * dst, const GAL_Rect * rect, Uint32 color)
 {
    return NexusPrivate_FillRect(this->hidden->privateData,
                                 (NexusPrivate_HWSurface_hwdata *) dst->hwdata,
@@ -266,11 +266,11 @@ static BOOL PCXVFB_SyncUpdate (_THIS)
 {
    RECT dirty_rc;

-    if (IsRectEmpty (&this->hidden->dirty_rc))
+    if (IsRectEmpty(&this->hidden->dirty_rc))
        return FALSE;

 #ifdef WIN32
-    win_PCXVFbLock ();
+    win_PCXVFbLock();
 #else
    shm_lock(semid);
 #endif
@@ -282,10 +282,10 @@ static BOOL PCXVFB_SyncUpdate (_THIS)
    if (dirty_rc.right == -1) dirty_rc.right = 0;
    if (dirty_rc.bottom == -1) dirty_rc.bottom = 0;

-    GetBoundRect (&this->hidden->dirty_rc, &dirty_rc,
+    GetBoundRect(&this->hidden->dirty_rc, &dirty_rc,
            &this->hidden->dirty_rc);

-    shadowScreen_BlitToReal (this);
+    shadowScreen_BlitToReal(this, NULL);

    this->hidden->hdr->dirty_rc_l = this->hidden->dirty_rc.left;
    this->hidden->hdr->dirty_rc_t = this->hidden->dirty_rc.top;
@@ -293,10 +293,10 @@ static BOOL PCXVFB_SyncUpdate (_THIS)
    this->hidden->hdr->dirty_rc_b = this->hidden->dirty_rc.bottom;
    this->hidden->hdr->dirty = TRUE;

-    SetRectEmpty (&this->hidden->dirty_rc);
+    SetRectEmpty(&this->hidden->dirty_rc);

 #ifdef WIN32
-    win_PCXVFbUnlock ();
+    win_PCXVFbUnlock();
 #else
    shm_unlock(semid);
 #endif
@@ -350,8 +350,6 @@ static GAL_VideoDevice *PCXVFB_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = PCXVFB_DeleteDevice;

@@ -617,7 +617,8 @@ void GAL_InvalidateMap(GAL_BlitMap *map)
    }
 }

-int GAL_MapSurface (GAL_Surface *src, GAL_Surface *dst)
+int GAL_MapSurface (GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op)
 {
    GAL_PixelFormat *srcfmt;
    GAL_PixelFormat *dstfmt;
@@ -698,7 +699,7 @@ int GAL_MapSurface (GAL_Surface *src, GAL_Surface *dst)
    map->format_version = (++dst->format_version);

    /* Choose your blitters wisely */
-    return(GAL_CalculateBlit(src));
+    return(GAL_CalculateBlit(src, srcrc, dstrc, op));
 }

 void GAL_FreeBlitMap(GAL_BlitMap *map)
@@ -59,11 +59,14 @@ extern void GAL_FreeFormat(GAL_PixelFormat *format);
 /* Blit mapping functions */
 extern GAL_BlitMap *GAL_AllocBlitMap(void);
 extern void GAL_InvalidateMap(GAL_BlitMap *map);
-extern int GAL_MapSurface (GAL_Surface *src, GAL_Surface *dst);
+extern int GAL_MapSurface (GAL_Surface *src, const GAL_Rect *srcrc,
+        GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op);
 extern void GAL_FreeBlitMap(GAL_BlitMap *map);

 /* Miscellaneous functions */
 extern Uint32 GAL_CalculatePitch(GAL_Surface *surface);
 extern void GAL_DitherColors(GAL_Color *colors, int bpp);
 extern Uint8 GAL_FindColor(GAL_Palette *pal, Uint8 r, Uint8 g, Uint8 b);
-extern void GAL_ApplyGamma(Uint16 *gamma, GAL_Color *colors, GAL_Color *output, int ncolors);
+extern void GAL_ApplyGamma(Uint16 *gamma, GAL_Color *colors, GAL_Color *output,
+        int ncolors);
+
@@ -171,8 +171,6 @@ static GAL_VideoDevice *QVFB_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = QVFB_DeleteDevice;

@@ -208,8 +208,6 @@ static GAL_VideoDevice *RTOS_XVFB_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = RTOS_XVFB_DeleteDevice;

@@ -196,8 +196,6 @@ static GAL_VideoDevice *S3C6410_CreateDevice(int devindex)
    device->AllocHWSurface = S3C6410_AllocHWSurface;
    device->CheckHWBlit = S3C6410_CheckHWBlit;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = S3C6410_FreeHWSurface;

    device->free = S3C6410_DeleteDevice;
@@ -231,13 +231,16 @@ void shadowScreen_UpdateRects (_THIS, int numrects, GAL_Rect *rects)
 }

 /* Blit dirty content from shadow surface to ultimate surface */
-int shadowScreen_BlitToReal (_THIS)
+int shadowScreen_BlitToReal (_THIS, const RECT *dirty_rc)
 {
    RECT bound;

    CHECK_VERSION_RETVAL (this, -1);

-    bound = this->hidden->dirty_rc;
+    if (dirty_rc == NULL)
+        bound = this->hidden->dirty_rc;
+    else
+        bound = *dirty_rc;

    if (this->hidden->real_screen) {
        GAL_Rect src_rect, dst_rect;
@@ -67,7 +67,7 @@ extern "C" {
 int shadowScreen_SetCursor (_THIS, GAL_Surface *surface, int hot_x, int hot_y);
 int shadowScreen_MoveCursor (_THIS, int x, int y);
 void shadowScreen_UpdateRects (_THIS, int numrects, GAL_Rect *rects);
-int shadowScreen_BlitToReal (_THIS);
+int shadowScreen_BlitToReal (_THIS, const RECT *dirty_rc);

 #ifdef __cplusplus
 }
@@ -1,6 +1,8 @@
 AM_CPPFLAGS = -I$(abs_top_srcdir)/src/include -I$(abs_top_srcdir)/include \
        -I$(abs_top_srcdir)/src/newgal/ $(PIXMAN_CFLAGS)

+AM_CFLAGS = -O3
+
 SRC_FILES = shadow.c shadow_refresh_msb_right.c shadow_refresh_msb_left.c

 HDR_FILES = shadow.h
@@ -49,15 +49,7 @@

 #include <pthread.h>
 #include <semaphore.h>
-
-#undef _MGUSE_PIXMAN
-
-#ifdef _MGUSE_PIXMAN
-#include <pixman.h>
-#include <math.h>
-#endif
-
-//#include "sysvideo.h"
+#include <time.h>

 #ifdef __cplusplus
 extern "C" {
@@ -66,9 +58,6 @@ extern "C" {
 /* Hidden "this" pointer for the video functions */
 #define _THIS    GAL_VideoDevice *this

-#define MAX_NR_UPDATERS              6
-#define MIN_PIXELS_USING_UPDATER     4096
-
 typedef struct _ShadowFBHeader {
    unsigned int info_size;
    int width;
@@ -104,29 +93,37 @@ typedef struct _RealFBInfo {

    GAL_VideoDevice *real_device;

-#ifdef _MGUSE_PIXMAN
-    pixman_image_t *src_img;
-    pixman_image_t *dst_img;
-    pixman_transform_t transform;
-#endif
-
 } RealFBInfo;

 /* Private display data */

+#define USE_UPDATE_SEM 0
+
 struct GAL_PrivateVideoData {
    RealFBInfo * realfb_info;
 #ifdef _MGRM_PROCESSES
    int semid;
 #endif

-    int         nr_updaters;
+    int             min_pixels_using_hwaccl;

-    /* only valid when nr_updaters > 0 */
-    RECT        dirty_rcs[MAX_NR_UPDATERS];
-    sem_t       update_sems[MAX_NR_UPDATERS];
-    pthread_t   update_thds[MAX_NR_UPDATERS];
-    sem_t       sync_sem;
+    /* async updater */
+    int             async_update;
+    int             update_interval;
+    RECT            update_rect;
+    pthread_t       update_thd;
+    sem_t           sync_sem;
+
+#if USE_UPDATE_SEM
+    sem_t           update_sem;
+#else
+    pthread_mutex_t update_lock;
+#endif
+
+#ifdef _DEBUG
+    struct timespec ts_start;
+    unsigned        frames;
+#endif
 };

 typedef struct _ShadowFBOps {
@@ -173,7 +173,7 @@ static int GFX_VideoInit(_THIS, GAL_PixelFormat * vformat);
 static GAL_Rect ** GFX_ListModes(_THIS, GAL_PixelFormat * format, Uint32 flags);
 static GAL_Surface * GFX_SetVideoMode(_THIS, GAL_Surface * current, int width, int height, int bpp, Uint32 flags);
 static void GFX_VideoQuit(_THIS);
-static int GFX_FillHWRect(_THIS, GAL_Surface * dst, GAL_Rect * rect, Uint32 color);
+static int GFX_FillHWRect(_THIS, GAL_Surface * dst, const GAL_Rect * rect, Uint32 color);
 static int GFX_AllocHWSurface(_THIS, GAL_Surface * surface);
 static void GFX_FreeHWSurface(_THIS, GAL_Surface * surface);
 static int GFX_HWAccelBlit(GAL_Surface * src, GAL_Rect * srcrect, GAL_Surface * dst, GAL_Rect * dstrect);
@@ -217,8 +217,6 @@ static GAL_VideoDevice * GFX_CreateDevice(int devindex)
    this->AllocHWSurface = GFX_AllocHWSurface;
    this->CheckHWBlit = GFX_CheckHWBlit;
    this->FillHWRect = GFX_FillHWRect;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;
    this->UpdateRects = NULL;
    this->FreeHWSurface = GFX_FreeHWSurface;

@@ -846,7 +844,7 @@ static void GFX_VideoQuit (_THIS)
    return;
 }

-static int GFX_FillHWRect(_THIS, GAL_Surface * surface, GAL_Rect * rect, Uint32 color)
+static int GFX_FillHWRect(_THIS, GAL_Surface * surface, const GAL_Rect * rect, Uint32 color)
 {
    FUNC_ENTER();
    struct GFXEngine_FillRectangle_type fill_param;
@@ -123,7 +123,7 @@ static int STGFB_AllocHWSurface (_THIS, GAL_Surface *surface);
 static void STGFB_FreeHWSurface (_THIS, GAL_Surface *surface);
 static int STGFB_HWAccelBlit (GAL_Surface *src, GAL_Rect *srcrect, GAL_Surface *dst, GAL_Rect *dstrect);
 static int STGFB_CheckHWBlit (_THIS, GAL_Surface * src, GAL_Surface * dst);
-static int STGFB_FillHWRect (_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color);
+static int STGFB_FillHWRect (_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color);

 /* STAPI functions */
 static int STAPI_Init (_THIS);
@@ -854,8 +854,6 @@ static GAL_VideoDevice *STGFB_CreateDevice (int devindex)
    this->FreeHWSurface = STGFB_FreeHWSurface;
    this->CheckHWBlit = STGFB_CheckHWBlit;
    this->FillHWRect = STGFB_FillHWRect;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;
    this->free = STGFB_DeleteDevice;

    return this;
@@ -1211,7 +1209,7 @@ static void STGFB_RequestHWSurface (_THIS, const REQ_HWSURFACE* request, REP_HWS
 }


-static int STGFB_FillHWRect (_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color)
+static int STGFB_FillHWRect (_THIS, GAL_Surface *dst, const GAL_Rect *rect, Uint32 color)
 {
    if (dst == NULL || rect == NULL) {
        fprintf(stderr, "STGFB_FillHWRect >> dst or dstrect NULL\n");
@@ -289,7 +289,7 @@ int GAL_SetupStretchBlit (GAL_Surface *src, GAL_Rect *srcrect,
            src->pix_filter = PIXMAN_FILTER_FAST;
        }

-        ops &= COLOR_BLEND_FLAGS_MASK;
+        ops &= COLOR_BLEND_PIXMAN_MASK;
        if (ops == COLOR_BLEND_LEGACY) {
            if ((src->flags & GAL_SRCPIXELALPHA) && src->format->Amask && src != dst) {
                src->pix_op = PIXMAN_OP_OVER;
@@ -376,7 +376,7 @@ int GAL_StretchBlt (GAL_Surface *src, GAL_Rect *srcrect,

    if (src_img == NULL || dst_img == NULL || (src->flags & GAL_SRCCOLORKEY))
        return GAL_StretchBltLegacy (src, srcrect, dst, dstrect,
-                ops & COLOR_BLEND_FLAGS_MASK);
+                ops & COLOR_BLEND_PIXMAN_MASK);

    msk_img = src->msk_img;
    op = (pixman_op_t)src->pix_op;
@@ -242,17 +242,19 @@ int GAL_SetColorKey (GAL_Surface *surface, Uint32 flag, Uint32 key)
    }

    if (flag) {
+        surface->flags |= GAL_SRCCOLORKEY;
+        surface->format->colorkey = key;
+#if 0
        GAL_VideoDevice *video = __mg_current_video;
        GAL_VideoDevice *this  = __mg_current_video;

-        surface->flags |= GAL_SRCCOLORKEY;
-        surface->format->colorkey = key;
        if ((surface->flags & GAL_HWACCEL) == GAL_HWACCEL) {
            if ((video->SetHWColorKey == NULL) ||
                 (video->SetHWColorKey(this, surface, key) < 0)) {
                surface->flags &= ~GAL_HWACCEL;
            }
        }
+#endif
        if (flag & GAL_RLEACCELOK) {
            surface->flags |= GAL_RLEACCELOK;
        } else {
@@ -297,9 +299,6 @@ int GAL_SetAlpha (GAL_Surface *surface, Uint32 flag, Uint8 value)
        GAL_UnRLESurface(surface, 1);

    if (flag) {
-        GAL_VideoDevice *video = __mg_current_video;
-        GAL_VideoDevice *this  = __mg_current_video;
-
        if (flag & GAL_SRCALPHA) {
            surface->flags |= GAL_SRCALPHA;
            surface->format->alpha = value;
@@ -307,6 +306,9 @@ int GAL_SetAlpha (GAL_Surface *surface, Uint32 flag, Uint8 value)
            surface->flags |= GAL_SRCPIXELALPHA;
        }

+#if 0
+        GAL_VideoDevice *video = __mg_current_video;
+        GAL_VideoDevice *this  = __mg_current_video;

        if ((surface->flags & GAL_HWACCEL) == GAL_HWACCEL) {
            if ((video->SetHWAlpha == NULL) ||
@@ -314,6 +316,8 @@ int GAL_SetAlpha (GAL_Surface *surface, Uint32 flag, Uint8 value)
                surface->flags &= ~GAL_HWACCEL;
            }
        }
+#endif
+
        if (flag & GAL_RLEACCELOK) {
                surface->flags |= GAL_RLEACCELOK;
        } else {
@@ -513,7 +517,7 @@ int GAL_LowerBlit (GAL_Surface *src, GAL_Rect *srcrect,
    /* Check to make sure the blit mapping is valid */
    if ((src->map->dst != dst) ||
             (src->map->dst->format_version != src->map->format_version)) {
-        if (GAL_MapSurface(src, dst) < 0) {
+        if (GAL_MapSurface(src, srcrect, dst, dstrect, op) < 0) {
            return(-1);
        }
    }
@@ -544,7 +548,7 @@ int GAL_LowerBlit (GAL_Surface *src, GAL_Rect *srcrect,
    _DBG_PRINTF("calling do_blit: from (%d, %d, %d, %d) to (%d, %d)\n",
                srcrect->x, srcrect->y, srcrect->w, srcrect->h,
                dstrect->x, dstrect->y);
-    ret = do_blit(src, srcrect, dst, dstrect);
+    ret = do_blit(src->map->video, src, srcrect, dst, dstrect);
 #endif

    return ret;
@@ -867,7 +871,7 @@ int GAL_FillRect(GAL_Surface *dst, const GAL_Rect *dstrect, Uint32 color)
    if (dstrect) {
        /* Perform clipping */
        if (!GAL_IntersectRect(dstrect, &dst->clip_rect, &my_dstrect)) {
-            return(0);
+            return 0;
        }
    } else {
        my_dstrect = dst->clip_rect;
@@ -876,7 +880,8 @@ int GAL_FillRect(GAL_Surface *dst, const GAL_Rect *dstrect, Uint32 color)
    /* Check for hardware acceleration */
    if (((dst->flags & GAL_HWSURFACE) == GAL_HWSURFACE) &&
                    video->info.blit_fill) {
-        return(video->FillHWRect(this, dst, &my_dstrect, color));
+        if (video->FillHWRect(this, dst, &my_dstrect, color) == 0)
+            return 0;
    }

 #ifdef _MGUSE_PIXMAN
@@ -1831,10 +1836,15 @@ void GAL_FreeSurface (GAL_Surface *surface)
    }

    if (surface->shared_header) {
-        if (surface->shared_header->creator == getpid())
-            GAL_FreeSharedSurfaceData(surface);
+        if (surface->flags & GAL_SSURF_ATTACHED)
+            GAL_DetachSharedSurfaceData(surface);
        else
-            GAL_DettachSharedSurfaceData(surface);
+            GAL_FreeSharedSurfaceData(surface);
+
+        if (surface->fd >= 0) {
+            close(surface->fd);
+            surface->fd = -1;
+        }

        surface->hwdata = NULL;
        surface->pixels = NULL;
@@ -2102,3 +2112,22 @@ BYTE* gal_PutPixelAlphaChannel (GAL_Surface* dst, BYTE* dstrow,
    return dstrow;
 }

+int GAL_LockSurface(GAL_Surface *surface)
+{
+    GAL_VideoDevice *video = surface->video;
+    if (video && GAL_MUSTLOCK(surface) && video->LockHWSurface) {
+        video->LockHWSurface(video, surface);
+        return 0;
+    }
+
+    return -1;
+}
+
+void GAL_UnlockSurface (GAL_Surface *surface)
+{
+    GAL_VideoDevice *video = surface->video;
+    if (video && GAL_MUSTLOCK(surface) && video->UnlockHWSurface) {
+        video->UnlockHWSurface(video, surface);
+    }
+}
+
@@ -137,8 +137,6 @@ static GAL_VideoDevice * SVPXXOSD_CreateDevice (int devindex)
    device->AllocHWSurface = SVPXXOSD_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = SVPXXOSD_FreeHWSurface;
    device->UpdateRects = NULL;

@@ -128,6 +128,9 @@ struct GAL_VideoDevice {
     */
    void (*UpdateRects)(_THIS, int numrects, GAL_Rect *rects);

+    /* Wait vertical blank */
+    BOOL (*WaitVBlank)(_THIS);
+
    /* Synchronize the dirty content */
    BOOL (*SyncUpdate)(_THIS);

@@ -171,10 +174,10 @@ struct GAL_VideoDevice {
    int (*AttachSharedHWSurface)(_THIS, GAL_Surface *surface,
            int prime_fd, size_t mapsize, BOOL with_rw);

-    /* Dettach from a shared surface in hardware video memory.
+    /* Detach from a shared surface in hardware video memory.
       Set to NULL if no hardware shared surface supported.
       Return 0 if success, otherwise -1. */
-    int (*DettachSharedHWSurface)(_THIS, GAL_Surface *surface);
+    int (*DetachSharedHWSurface)(_THIS, GAL_Surface *surface);

    /* Allocate a dumb surface from hardware.
       Set to NULL if dumb surface is not supported.
@@ -198,22 +201,30 @@ struct GAL_VideoDevice {
    /* Set the hardware accelerated blit function, if any, based
       on the current flags of the surface (colorkey, alpha, etc.)
     */
-    int (*CheckHWBlit)(_THIS, GAL_Surface *src, GAL_Surface *dst);
+    int (*CheckHWBlit)(_THIS, GAL_Surface *src, const GAL_Rect *srcrc,
+            GAL_Surface *dst, const GAL_Rect *dstrc, DWORD op);

    /* Fills a surface rectangle with the given color */
-    int (*FillHWRect)(_THIS, GAL_Surface *dst, GAL_Rect *rect, Uint32 color);
+    int (*FillHWRect)(_THIS, GAL_Surface *dst, const GAL_Rect *dstrc,
+            Uint32 color);

+    /* Copies pixles in the source surface to the destination surface
+       with or without scaling, rotation, or flip; nullable. */
+    int (*CopyHWSurface)(_THIS,
+            GAL_Surface *src, const GAL_Rect *srcrc,
+            GAL_Surface *dst, const GAL_Rect *dstrc, BlitCopyOperation op);
+
+    /* Returns a readable/writable surface; nullable. */
+    int (*LockHWSurface)(_THIS, GAL_Surface *surface);
+    void (*UnlockHWSurface)(_THIS, GAL_Surface *surface);
+
+#if 0
    /* Set video mem colorkey and accelerated blit function */
    int (*SetHWColorKey)(_THIS, GAL_Surface *surface, Uint32 key);

    /* Set per surface hardware alpha value */
    int (*SetHWAlpha)(_THIS, GAL_Surface *surface, Uint8 value);

-#if 0
-    /* Returns a readable/writable surface */
-    int (*LockHWSurface)(_THIS, GAL_Surface *surface);
-    void (*UnlockHWSurface)(_THIS, GAL_Surface *surface);
-
    /* Performs hardware flipping */
    int (*FlipHWSurface)(_THIS, GAL_Surface *surface);
 #endif
@@ -383,8 +383,6 @@ static GAL_VideoDevice *USVFB_CreateDevice (int devindex)
    device->AllocHWSurface = USVFB_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = USVFB_FreeHWSurface;
    device->UpdateRects = USVFB_UpdateRects;

@@ -350,8 +350,6 @@ static GAL_VideoDevice *UTPMC_CreateDevice (int devindex)
    device->AllocHWSurface = UTPMC_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = UTPMC_FreeHWSurface;
    device->UpdateRects = UTPMC_UpdateRects;

@@ -508,8 +508,6 @@ static GAL_VideoDevice *UTPMC_CreateDevice (int devindex)
    device->AllocHWSurface = UTPMC_AllocHWSurface;
    device->CheckHWBlit = NULL;
    device->FillHWRect = NULL;
-    device->SetHWColorKey = NULL;
-    device->SetHWAlpha = NULL;
    device->FreeHWSurface = UTPMC_FreeHWSurface;
    device->UpdateRects = UTPMC_UpdateRects;

@@ -918,9 +918,9 @@ BOOL GAL_SyncUpdate (GAL_Surface *surface)

 #ifdef _MGSCHEMA_COMPOSITING
    if (surface->shared_header) {
-        LOCK_SURFACE_SEM (surface->shared_header->sem_num);
+        __mg_lock_file_for_write (surface->fd);
        mark_surface_dirty (surface, numrects, rects);
-        UNLOCK_SURFACE_SEM (surface->shared_header->sem_num);
+        __mg_unlock_file_for_write (surface->fd);
    }
    else if (surface->dirty_info) {
        mark_surface_dirty (surface, numrects, rects);
@@ -148,8 +148,6 @@ static GAL_VideoDevice *WVFB_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = WVFB_DeleteDevice;

@@ -261,8 +261,6 @@ static GAL_VideoDevice *XXVFB_CreateDevice (int devindex)

    this->CheckHWBlit = NULL;
    this->FillHWRect = NULL;
-    this->SetHWColorKey = NULL;
-    this->SetHWAlpha = NULL;

    this->free = XXVFB_DeleteDevice;

@@ -14,7 +14,8 @@ SRC_FILES = gdi.c attr.c clip.c map.c coor.c rect.c  \
            simple-glyph-renderer.c glyph-shaped.c \
            textruns.c \
            shape-glyphs-basic.c shape-glyphs-complex.c \
-            layout.c layout-utils.c layout-ellipsize.c
+            layout.c layout-utils.c layout-ellipsize.c \
+            shared-surface.c

 HDR_FILES = glyph.h drawtext.h mi.h midc.h mistruct.h miwideline.h \
            pixel_ops.h mifillarc.h mispans.h polygon.h mifpoly.h \
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Vincent Wei	4ae46a4b94	update	2025-05-27 15:53:44 +08:00
xueshuming	2791dc99ef	Init Order: call 'mg_InitTimer' before call 'SystemThreads'	2025-05-27 15:45:03 +08:00
Vincent Wei	b7525f3001	fix a bug: MSG_TIMEOUT for desktop thread was not fired correctly	2025-05-27 14:45:53 +08:00
Vincent Wei	4c55f2eac3	use sem_timedwait in the idle handler for desktop threads	2025-05-27 11:08:55 +08:00
Vincent Wei	3ad600d1bf	Merge branch 'rel-5-0'	2025-05-09 14:02:57 +08:00
Vincent Wei	3c233a4164	update version to 5.0.15	2025-05-09 13:59:17 +08:00
xueshuming	0abaeef4c7	impl : __mg_save_png	2024-02-20 19:28:14 +08:00
Vincent Wei	c2779cbf09	implement a new API: TestIfSharedSurfaceChanged()	2023-09-26 10:52:09 +08:00
Vincent Wei	e118805eef	fix a bug of GetUpdateRect: intersect bouding rectangle of invalid region with client rect	2023-09-16 15:43:07 +08:00
Vincent Wei	7513d461bf	remove code about semaphhore for shared surface	2023-09-08 18:14:20 +08:00
Vincent Wei	b131f00a79	fix compiling errors for MiniGUI-Standalone runmode	2023-09-04 10:45:05 +08:00
Vincent Wei	649fbf571e	change copyright year	2023-09-01 16:07:56 +08:00
Vincent Wei	e38fd05cb4	debug: use fcntl() instead of flock()	2023-09-01 16:03:50 +08:00
Vincent Wei	ce53f2c703	use MSG_WINCOMPOSITED to reset the dirty information of a shared surface of a window	2023-09-01 12:25:04 +08:00
Vincent Wei	fbebc94718	use GAL_RefSurface() in CreateMemDCFromSurface()	2023-09-01 10:01:11 +08:00
Vincent Wei	b4ce6f9f10	helpers for locking/unlocking a file	2023-09-01 08:36:08 +08:00
Vincent Wei	c04dde31e5	use flock() instead of semaphore for shared surfaces	2023-09-01 08:35:32 +08:00
Vincent Wei	5a2b425012	debug	2023-08-31 17:00:50 +08:00
Vincent Wei	fa18025350	debug APIs for shared surfaces	2023-08-31 16:02:06 +08:00
Vincent Wei	890ab1db44	debug	2023-08-30 15:40:13 +08:00
Vincent Wei	3d963b3d25	Extend JoinLayer() to JoinLayerEx() to return the client identifier; Add a new API GetClientId()	2023-08-30 12:23:26 +08:00
Vincent Wei	29ac6a4277	initial implementation of new APIs of shared surface: AttachToSharedSurface(), GetSharedSurfaceInfo(), LockSharedSurfaceIfDirty(), UnlockSharedSurface(), and DetachFromSharedSurface()	2023-08-29 16:21:49 +08:00
Vincent Wei	96ecf5e9b7	Tune layout of struct _SharedSurfaceHeader; Change interface of GetWindowSharedSurfaceFD()	2023-08-29 12:50:58 +08:00
Vincent Wei	50aafa3faa	initial implementation of CreateSharedSurface(), DestroySharedSurface(), GetSharedSurfaceFDByClientWindow(), and GetSharedSurfaceFDByName()	2023-08-29 12:12:51 +08:00
Vincent Wei	d06ce0683b	call __mg_nssurf_map_delete() in server_ServerCleanup	2023-08-28 20:12:50 +08:00
Vincent Wei	5a9b08fe94	initial implementation for named shared surface	2023-08-28 16:51:46 +08:00
Vincent Wei	c7569e9d32	add default options to fbcon section in MiniGUI.cfg	2023-08-28 11:25:57 +08:00
Vincent Wei	06fcf2eaa0	New APIs: `GetWindowSurfaceBufferFD()` and `CreateMemDCFromSurfaceBufferFD()` for compositing schema.	2023-08-22 11:29:36 +08:00
Vincent Wei	33e5d62da8	Merge remote-tracking branch 'origin/rel-5-0' into drm-dma	2023-08-21 10:19:14 +08:00
Vincent Wei	cf3340c01d	update	2023-08-02 15:29:00 +08:00
Vincent Wei	950f73716a	use libsuffix to define the library suffix; use `processes-compositing` style for runmode	2023-08-02 15:08:45 +08:00
Vincent Wei	295c993d50	make `Runmode` in pc file as a variable in order that we can use pkg_get_variable() in cmake files to determinate the runtime mode of MiniGUI.	2023-08-02 14:39:23 +08:00
Vincent Wei	95ab7dad2a	fix a bug and call sem_wait within retry_syscall_for_eintr()	2023-08-01 19:13:49 +08:00
Vincent Wei	3d42f72e21	debug	2023-08-01 18:00:41 +08:00
Vincent Wei	59d9d08158	debug	2023-08-01 17:55:34 +08:00
Vincent Wei	3a9cbfdd9b	initialize last_x and last_y	2023-08-01 16:55:11 +08:00
Vincent Wei	bc7d5f6ce0	fix a compositing bug when the wallpaper is empty	2023-08-01 16:33:27 +08:00
Vincent Wei	1131973f7a	Fix a bug in PeekMessageEx	2023-08-01 16:14:12 +08:00
Vincent Wei	a46804080e	Fix a bug in PeekMessageEx	2023-08-01 16:12:31 +08:00
Vincent Wei	81b25968ca	do not return ARCH_TYPE_BASIC_VOWEL for Arabic chars	2023-08-01 15:57:27 +08:00
Vincent Wei	f1463f41de	fix some compilation errors	2023-08-01 14:54:09 +08:00
Vincent Wei	0a10b81499	Merge branch 'rel-5-0' into drm-dma	2023-08-01 14:22:39 +08:00
Vincent Wei	fd07118939	enhance fbcon engine to support async updater; tune internal interface shadowScreen_BlitToReal()	2023-08-01 11:33:30 +08:00
Vincent Wei	a0a757a621	tune DRM engine for procs runmode and compositing schema	2023-08-01 10:03:19 +08:00
Vincent Wei	7cd7f954c6	make virtual-window enabled by default	2023-08-01 10:02:49 +08:00
Vincent Wei	e673452b7d	debug	2023-07-31 10:15:14 +08:00
Vincent Wei	e24490e92f	debug	2023-07-30 12:17:02 +08:00
Vincent Wei	0c2345aed1	change method `flush_driver` to `flush` of DrmDriverOps; change member `buff` to `vaddr` of DrmSurfaceBuffer	2023-07-30 11:57:02 +08:00
Vincent Wei	95b9def0d5	rename dma_buff to dma_buf	2023-07-28 21:20:18 +08:00
Vincent Wei	563fe9232c	remove methods OnBeforeUpdate and OnAfterUpdate	2023-07-28 21:08:44 +08:00
Vincent Wei	5ad525c1d8	fix a bug	2023-07-27 10:58:58 +08:00
Vincent Wei	fcde9eb405	Add OnBeforeUpdate() and OnAfterUpdate() operations for Shadow engine	2023-07-27 10:46:58 +08:00
Vincent Wei	39d03be6d7	use DMA_BUF_IOCTL_SYNC	2023-07-27 10:04:53 +08:00
Vincent Wei	bce5b73e1c	call pthread_testcancel() in task_do_update	2023-07-25 10:58:27 +08:00
Vincent Wei	0b4a5a1c17	tune	2023-07-25 10:43:20 +08:00
Vincent Wei	c609e2e5b1	check number of pixels before calling hardware accecelation operations	2023-07-24 09:56:10 +08:00
Vincent Wei	f6bf02aa5c	add new operation do_blit in DrmDriverOps; use do_blit instead of returning callback of check_blit	2023-07-24 08:22:10 +08:00
Vincent Wei	d52aa4c1a4	do cleanup for free surfaces	2023-07-23 16:03:08 +08:00
Vincent Wei	d6a961aa6c	enhance GAL_blit to have a pointer to GAL_VideoDevice for hardware acceleration blits	2023-07-23 15:05:54 +08:00
Vincent Wei	2665200eee	add new runtime configuration option: min_pixels_using_hwaccl	2023-07-23 13:02:45 +08:00
Vincent Wei	469eb1c05a	use hardware accelerated copy_buff	2023-07-23 12:45:24 +08:00
Vincent Wei	6a83f2efbf	Remove SetHWColorKey, SetHWAlpha; Tune prototype of FillHWRect; Add CopyHWSurface()	2023-07-23 12:01:18 +08:00
Vincent Wei	6422cb8568	tune	2023-07-22 20:27:52 +08:00
Vincent Wei	6be4b719c8	If FillHWRect() retruns non-zero, use GAL_SoftFillRect()	2023-07-22 19:02:41 +08:00
Vincent Wei	0f566d0342	tune DRM_SURBUF_TYPE	2023-07-22 17:28:20 +08:00
Vincent Wei	1de19f9bee	Upgrade DrmDriverOps to version 2 and enhance ChechHWBlit	2023-07-22 16:15:09 +08:00
Vincent Wei	5f8a88c0a2	check euid when creating update thread	2023-07-21 11:52:52 +08:00
Vincent Wei	1611a56754	tune	2023-07-21 11:20:30 +08:00
Vincent Wei	73fcb8d2c3	tune shadow and drm video engines to show FPS	2023-07-21 10:40:31 +08:00
Vincent Wei	bc0efac21f	cleanup	2023-07-14 18:56:50 +08:00
xueshuming	26341b162e	debug	2023-07-14 17:06:54 +08:00
Vincent Wei	c6957bec23	debug	2023-07-14 16:32:16 +08:00
Vincent Wei	56ddd87189	debug	2023-07-14 14:38:47 +08:00
Vincent Wei	5cdd258046	use WaitVBlank	2023-07-14 14:06:28 +08:00
Vincent Wei	8b4ab267b6	and an alternative to use semphaore	2023-07-14 13:11:30 +08:00
Vincent Wei	613a19c236	debug: call pthread_mutex_init for update_lock	2023-07-14 12:54:58 +08:00
Vincent Wei	e242cbe32f	handle all implementations of kernel_ShowCursorForGDI	2023-07-14 11:19:04 +08:00
Vincent Wei	5f921a2908	cleanup	2023-07-14 10:20:34 +08:00
Vincent Wei	39493ef4dc	implement LockHWSurface for shadow and drm engines due to the async. updates to real screen	2023-07-14 10:14:23 +08:00
Vincent Wei	fef311f0b2	use async. update for shadow engine	2023-07-13 18:37:56 +08:00
Vincent Wei	e98aeab8dc	debug and tue	2023-07-13 16:37:12 +08:00
Vincent Wei	2ff96ba383	debug and cleanup	2023-07-13 12:21:28 +08:00
Vincent Wei	03d90aec9f	debug	2023-07-12 22:29:14 +08:00
Vincent Wei	57293a2896	debug	2023-07-12 22:05:22 +08:00
Vincent Wei	cfd3311f86	use drmWaitVBlank	2023-07-12 21:35:32 +08:00
Vincent Wei	51b09bc2ed	tune	2023-07-12 20:09:07 +08:00
Vincent Wei	ff54c6ffe5	debug	2023-07-12 16:41:54 +08:00
Vincent Wei	4c836603c1	tune DRM_SyncUpdate	2023-07-12 15:09:08 +08:00
Vincent Wei	311d2262d6	some tries	2023-07-11 22:17:59 +08:00
Vincent Wei	209a0c6ab0	initial support for drmDMA	2023-07-11 16:59:21 +08:00