added store/restore display buffer

driver.h

@@ -84,7 +84,7 @@ public:
 
 	virtual Bitmap *getScreenshot(int w, int h) = 0;
 	virtual void storeDisplay() = 0;
-	virtual void flushStoredDisplay() = 0;
+	virtual void copyStoredToDisplay() = 0;
 	virtual void enableDim(int x, int y, int w, int h) = 0;
 	virtual void disableDim(int x, int y, int w, int h) = 0;
 
@@ -104,7 +104,6 @@ protected:
 	int _screenWidth, _screenHeight, _screenBPP;
 	bool _isFullscreen;
 	bool _dim;
-	byte *_storedDisplay;
 
 	virtual void drawDim() = 0;
 };

driver_gl.cpp

@@ -47,7 +47,6 @@ DriverGL::DriverGL(int screenW, int screenH, int screenBPP, bool fullscreen) {
 	loadEmergFont();
 
 	_smushNumTex = 0;
-	_storedDisplay = NULL;
 }
 
 void DriverGL::toggleFullscreenMode() {

driver_gl.h

@@ -67,7 +67,7 @@ public:
 
 	Bitmap *getScreenshot(int w, int h);
 	void storeDisplay() {}
-	void flushStoredDisplay() {}
+	void copyStoredToDisplay() {}
 	void enableDim(int /*x*/, int /*y*/, int /*w*/, int /*h*/) { _dim = true; }
 	void disableDim(int /*x*/, int /*y*/, int /*w*/, int /*h*/) { _dim = false; }
 

driver_tinygl.cpp

@@ -108,10 +108,12 @@ DriverTinyGL::DriverTinyGL(int screenW, int screenH, int screenBPP, bool fullscr
 	_zb = ZB_open(screenW, screenH, ZB_MODE_5R6G5B, 0, NULL, NULL, _screen->pixels);
 	tglInit(_zb);
 
-	_storedDisplay = NULL;
+	_storedDisplay = new byte[640 * 480 * 2];
+	memset(_storedDisplay, 0, 640 * 480 * 2);
 }
 
 DriverTinyGL::~DriverTinyGL() {
+	delete []_storedDisplay;
 	tglClose();
 	ZB_close(_zb);
 }
@@ -490,14 +492,11 @@ Bitmap *DriverTinyGL::getScreenshot(int w, int h) {
 }
 
 void DriverTinyGL::storeDisplay() {
-	_storedDisplay = new byte[640 * 480 * 2];
-	assert(_storedDisplay);
 	memcpy(_storedDisplay, _zb->pbuf, 640 * 480 * 2);
 }
 
-void DriverTinyGL::flushStoredDisplay() {
-	delete []_storedDisplay;
-	_storedDisplay = NULL;
+void DriverTinyGL::copyStoredToDisplay() {
+	memcpy(_zb->pbuf, _storedDisplay, 640 * 480 * 2);
 }
 
 void DriverTinyGL::drawDim() {

driver_tinygl.h

@@ -69,7 +69,7 @@ public:
 
 	Bitmap *getScreenshot(int w, int h);
 	void storeDisplay();
-	void flushStoredDisplay();
+	void copyStoredToDisplay();
 	void enableDim(int /*x*/, int /*y*/, int /*w*/, int /*h*/) { _dim = true; }
 	void disableDim(int /*x*/, int /*y*/, int /*w*/, int /*h*/) { _dim = false; }
 
@@ -94,6 +94,7 @@ private:
 	byte *_smushBitmap;
 	int _smushWidth;
 	int _smushHeight;
+	byte *_storedDisplay;
 };
 
 #endif

engine.cpp

@@ -270,6 +270,8 @@ void Engine::updateDisplayScene() {
 		// The overlay objects should be drawn on top of everything else,
 		// including 3D objects such as Manny and the message tube
 		_currScene->drawBitmaps(ObjectState::OBJSTATE_OVERLAY);
+
+		g_driver->storeDisplay();
 	} else if (_mode == ENGINE_MODE_DRAW) {
 		if (_refreshDrawNeeded) {
 			lua_beginblock();

lua.cpp

@@ -2261,10 +2261,6 @@ void getTextObjectParams(TextObject *textObject, lua_Object table_obj) {
 	}
 }
 
-/* Clean the buffer of text objects and primitives
- * this is known to be used when changing between menus
- * and when loading some cutscenes
- */
 static void CleanBuffer() {
 	DEBUG_FUNCTION();
 	g_engine->killPrimitiveObjects();
@@ -2272,34 +2268,7 @@ static void CleanBuffer() {
 	// Cleanup references to deleted text objects
 	for (Engine::ActorListType::const_iterator i = g_engine->actorsBegin(); i != g_engine->actorsEnd(); i++)
 		(*i)->lineCleanup();
-}
- 
-/* Check to see if the menu item at a specific index has
- * the "disabled" flag set
- */
-bool itemDisabled(lua_Object itemTable, int menuItem) {
-	lua_Object table = getTableValue(itemTable, "items");
-	lua_Object item = getIndexedTableValue(table, menuItem);
-	lua_Object itemdata = getTableValue(item, "props");
-	lua_Object disabled = getTableValue(itemdata, "disabled");
-
-	if (!lua_isnil(disabled) && atoi(lua_getstring(disabled)) == 1)
-		return true;
-	else
-		return false;
-}
-
-/* Find the text representing an item in the menu
- */
-char *itemText(lua_Object itemTable, int menuItem) {
-	lua_Object table = getTableValue(itemTable, "items");
-	lua_Object item = getIndexedTableValue(table, menuItem);
-	lua_Object itemtext = getTableValue(item, "text");
-
-	if (!lua_isnil(itemtext) && lua_isstring(itemtext))
-		return lua_getstring(itemtext);
-	else
-		return NULL;
+	//g_driver->copyStoredToDisplay();
 }
  
 /* This function sends the SDL signal to
@@ -2958,6 +2927,7 @@ static void RenderModeUser() {
 		g_smush->pause(false);
 		g_engine->refreshDrawMode();
 		g_engine->setMode(g_engine->getPreviousMode());
+		CleanBuffer();
 	} else {
 		error("RenderModeUser() Unknown type of param");
 	}