add dirty/BuildMesh to Screen, return 0 from Gfx_CreateDynamicVb if context is lost

src/Graphics.c

@@ -583,16 +583,12 @@ void Gfx_SetFaceCulling(cc_bool enabled) {
 void Gfx_SetFog(cc_bool enabled) {
 	if (gfx_fogEnabled == enabled) return;
 	gfx_fogEnabled = enabled;
-
-	if (Gfx.LostContext) return;
 	IDirect3DDevice9_SetRenderState(device, D3DRS_FOGENABLE, enabled);
 }
 
 void Gfx_SetFogCol(PackedCol col) {
 	if (col == gfx_fogCol) return;
 	gfx_fogCol = col;
-
-	if (Gfx.LostContext) return;
 	IDirect3DDevice9_SetRenderState(device, D3DRS_FOGCOLOR, gfx_fogCol);
 }
 
@@ -601,7 +597,6 @@ void Gfx_SetFogDensity(float value) {
 	if (value == gfx_fogDensity) return;
 	gfx_fogDensity = value;
 
-	if (Gfx.LostContext) return;
 	raw.f = value;
 	IDirect3DDevice9_SetRenderState(device, D3DRS_FOGDENSITY, raw.u);
 }
@@ -611,7 +606,6 @@ void Gfx_SetFogEnd(float value) {
 	if (value == gfx_fogEnd) return;
 	gfx_fogEnd = value;
 
-	if (Gfx.LostContext) return;
 	raw.f = value;
 	IDirect3DDevice9_SetRenderState(device, D3DRS_FOGEND, raw.u);
 }
@@ -622,7 +616,6 @@ void Gfx_SetFogMode(FogFunc func) {
 	if (mode == gfx_fogMode) return;
 
 	gfx_fogMode = mode;
-	if (Gfx.LostContext) return;
 	IDirect3DDevice9_SetRenderState(device, D3DRS_FOGTABLEMODE, mode);
 }
 
@@ -683,7 +676,10 @@ static void D3D9_RestoreRenderStates(void) {
 GfxResourceID Gfx_CreateDynamicVb(VertexFormat fmt, int maxVertices) {
 	int size = maxVertices * gfx_strideSizes[fmt];
 	IDirect3DVertexBuffer9* vbuffer;
-	cc_result res = IDirect3DDevice9_CreateVertexBuffer(device, size, D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY,
+	cc_result res;
+	if (Gfx.LostContext) return 0;
+		
+	res = IDirect3DDevice9_CreateVertexBuffer(device, size, D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY,
 		d3d9_formatMappings[fmt], D3DPOOL_DEFAULT, &vbuffer, NULL);
 	if (res) Logger_Abort2(res, "D3D9_CreateDynamicVb");
 
@@ -1165,6 +1161,7 @@ static GLuint GL_GenAndBind(GLenum target) {
 }
 
 GfxResourceID Gfx_CreateDynamicVb(VertexFormat fmt, int maxVertices) {
+	if (Gfx.LostContext) return 0;
 	GLuint id      = GL_GenAndBind(GL_ARRAY_BUFFER);
 	cc_uint32 size = maxVertices * gfx_strideSizes[fmt];
 	_glBufferData(GL_ARRAY_BUFFER, size, NULL, GL_DYNAMIC_DRAW);

src/Gui.c

@@ -158,6 +158,7 @@ static void Gui_AddCore(struct Screen* s, int priority) {
 	priorities[i]  = priority;
 	Gui_ScreensCount++;
 
+	s->dirty = true;
 	s->VTABLE->Init(s);
 	s->VTABLE->ContextRecreated(s);
 
@@ -240,6 +241,7 @@ void Gui_RenderGui(double delta) {
 	/* Draw back to front so highest priority screen is on top */
 	for (i = Gui_ScreensCount - 1; i >= 0; i--) {
 		s = Gui_Screens[i];
+		if (s->dirty) { s->VTABLE->BuildMesh(s); s->dirty = false; }
 		s->VTABLE->Render(s, delta);
 	}
 	Gfx_Mode3D();

src/Gui.h

@@ -42,10 +42,12 @@ struct ScreenVTABLE {
 	void (*Render)(void* elem, double delta);
 	/* Frees/releases persistent state. */
 	void (*Free)(void* elem);
+	/* Builds the vertex mesh for all the widgets in the screen. */
+	void (*BuildMesh)(void* elem);
 	/* Returns non-zero if an input press is handled. */
-	int  (*HandlesKeyDown)(void* elem, int key);
+	int  (*HandlesInputDown)(void* elem, int key);
 	/* Returns non-zero if an input release is handled. */
-	int  (*HandlesKeyUp)(void* elem, int key);
+	int  (*HandlesInputUp)(void* elem, int key);
 	/* Returns non-zero if a key character press is handled. */
 	int  (*HandlesKeyPress)(void* elem, char keyChar);
 	/* Returns non-zero if a key character press is handled. */
@@ -70,6 +72,7 @@ struct ScreenVTABLE {
 	cc_bool grabsInput;  /* Whether this screen grabs input. Causes the cursor to become visible. */ \
 	cc_bool blocksWorld; /* Whether this screen completely and opaquely covers the game world behind it. */ \
 	cc_bool closable;    /* Whether this screen is automatically closed when pressing Escape */ \
+	cc_bool dirty;       /* Whether this screens needs to have its mesh rebuilt. */ \
 	struct Widget** widgets; int numWidgets;
 
 /* Represents a container of widgets and other 2D elements. May cover entire window. */

src/Input.c

@@ -747,7 +747,7 @@ static void InputHandler_Toggle(int key, cc_bool* target, const char* enableMsg,
 	}
 }
 
-static void InputHandler_CycleDistanceForwards(const short* viewDists, int count) {
+static void CycleViewDistanceForwards(const short* viewDists, int count) {
 	int i, dist;
 	for (i = 0; i < count; i++) {
 		dist = viewDists[i];
@@ -759,7 +759,7 @@ static void InputHandler_CycleDistanceForwards(const short* viewDists, int count
 	Game_UserSetViewDistance(viewDists[0]);
 }
 
-static void InputHandler_CycleDistanceBackwards(const short* viewDists, int count) {
+static void CycleViewDistanceBackwards(const short* viewDists, int count) {
 	int i, dist;
 	for (i = count - 1; i >= 0; i--) {
 		dist = viewDists[i];
@@ -873,9 +873,9 @@ static cc_bool HandleCoreKey(int key) {
 		int count = Gui_ClassicMenu ? Array_Elems(classicDists) : Array_Elems(normDists);
 
 		if (Key_IsShiftPressed()) {
-			InputHandler_CycleDistanceBackwards(viewDists, count);
+			CycleViewDistanceBackwards(viewDists, count);
 		} else {
-			InputHandler_CycleDistanceForwards(viewDists, count);
+			CycleViewDistanceForwards(viewDists, count);
 		}
 	} else if (key == KEY_F5 && Game_ClassicMode) {
 		int weather = Env.Weather == WEATHER_SUNNY ? WEATHER_RAINY : WEATHER_SUNNY;
@@ -915,6 +915,7 @@ static void HandleMouseWheel(void* obj, float delta) {
 	
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
+		s->dirty = true;
 		if (s->VTABLE->HandlesMouseScroll(s, delta)) return;
 	}
 
@@ -924,6 +925,7 @@ static void HandleMouseWheel(void* obj, float delta) {
 
 	widget = ChatScreen_GetHotbar();
 	Elem_HandlesMouseScroll(widget, delta);
+	((struct Screen*)Gui_Chat)->dirty = true;
 }
 
 static void HandlePointerMove(void* obj, int idx, int xDelta, int yDelta) {
@@ -932,6 +934,7 @@ static void HandlePointerMove(void* obj, int idx, int xDelta, int yDelta) {
 
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
+		s->dirty = true;
 		if (s->VTABLE->HandlesPointerMove(s, 1 << idx, x, y)) return;
 	}
 }
@@ -942,6 +945,7 @@ static void HandlePointerDown(void* obj, int idx) {
 
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
+		s->dirty = true;
 #ifdef CC_BUILD_TOUCH
 		if (s->VTABLE->HandlesPointerDown(s, 1 << idx, x, y)) {
 			touches[idx].type = TOUCH_TYPE_GUI; return;
@@ -958,6 +962,7 @@ static void HandlePointerUp(void* obj, int idx) {
 
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
+		s->dirty = true;
 		if (s->VTABLE->HandlesPointerUp(s, 1 << idx, x, y)) return;
 	}
 }
@@ -983,7 +988,8 @@ static void HandleInputDown(void* obj, int key, cc_bool was) {
 	
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
-		if (s->VTABLE->HandlesKeyDown(s, key)) return;
+		s->dirty = true;
+		if (s->VTABLE->HandlesInputDown(s, key)) return;
 	}
 
 	if ((key == KEY_ESCAPE || key == KEY_PAUSE) && !Gui_GetInputGrab()) {
@@ -1023,7 +1029,8 @@ static void HandleInputUp(void* obj, int key) {
 
 	for (i = 0; i < Gui_ScreensCount; i++) {
 		s = Gui_Screens[i];
-		if (s->VTABLE->HandlesKeyUp(s, key)) return;
+		s->dirty = true;
+		if (s->VTABLE->HandlesInputUp(s, key)) return;
 	}
 
 	if (Gui_GetInputGrab()) return;

src/Menus.c

@@ -446,8 +446,10 @@ static void ListScreen_ContextRecreated(void* screen) {
 	ListScreen_UpdatePage(s);
 }
 
+static void ListScreen_BuildMesh(void* screen) { }
+
 static const struct ScreenVTABLE ListScreen_VTABLE = {
-	ListScreen_Init,    ListScreen_Render, ListScreen_Free,
+	ListScreen_Init,    ListScreen_Render, ListScreen_Free,  ListScreen_BuildMesh,
 	ListScreen_KeyDown, Screen_TInput,     Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,   Screen_TPointer,   Menu_PointerMove, ListScreen_MouseScroll,
 	Menu_Layout,      ListScreen_ContextLost,  ListScreen_ContextRecreated
@@ -510,6 +512,8 @@ static void PauseScreen_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void PauseScreen_BuildMesh(void* screen) { }
+
 static void PauseScreen_Init(void* screen) {
 	static struct Widget* widgets[8];
 	struct PauseScreen* s = (struct PauseScreen*)screen;
@@ -558,7 +562,7 @@ static void PauseScreen_Free(void* screen) {
 }
 
 static const struct ScreenVTABLE PauseScreen_VTABLE = {
-	PauseScreen_Init,   MenuScreen_Render,  PauseScreen_Free,
+	PauseScreen_Init,   MenuScreen_Render, PauseScreen_Free, PauseScreen_BuildMesh,
 	MenuScreen_KeyDown, Screen_TInput,     Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,   Screen_TPointer,   Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,        Menu_ContextLost,  PauseScreen_ContextRecreated
@@ -632,6 +636,8 @@ static void OptionsGroupScreen_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void OptionsGroupScreen_BuildMesh(void* screen) { }
+
 static void OptionsGroupScreen_Init(void* screen) {
 	static struct Widget* widgets[9];
 	struct OptionsGroupScreen* s = (struct OptionsGroupScreen*)screen;
@@ -663,7 +669,7 @@ static int OptionsGroupScreen_PointerMove(void* screen, int id, int x, int y) {
 }
 
 static const struct ScreenVTABLE OptionsGroupScreen_VTABLE = {
-	OptionsGroupScreen_Init, MenuScreen_Render,  OptionsGroupScreen_Free,
+	OptionsGroupScreen_Init, MenuScreen_Render,  OptionsGroupScreen_Free,        OptionsGroupScreen_BuildMesh,
 	MenuScreen_KeyDown,      Screen_TInput,      Screen_TKeyPress,               Screen_TText,
 	Menu_PointerDown,        Screen_TPointer,    OptionsGroupScreen_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,           OptionsGroupScreen_ContextLost, OptionsGroupScreen_ContextRecreated
@@ -865,6 +871,8 @@ static void EditHotkeyScreen_ContextRecreated(void* screen) {
 	ButtonWidget_SetConst(&s->cancel, "Cancel", &s->titleFont);
 }
 
+static void EditHotkeyScreen_BuildMesh(void* screen) { }
+
 static void EditHotkeyScreen_Init(void* screen) {
 	static struct Widget* widgets[7];
 	struct EditHotkeyScreen* s = (struct EditHotkeyScreen*)screen;
@@ -894,7 +902,7 @@ static void EditHotkeyScreen_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE EditHotkeyScreen_VTABLE = {
-	EditHotkeyScreen_Init,    EditHotkeyScreen_Render, Menu_CloseKeyboard,
+	EditHotkeyScreen_Init,    EditHotkeyScreen_Render, Menu_CloseKeyboard,        EditHotkeyScreen_BuildMesh,
 	EditHotkeyScreen_KeyDown, Screen_TInput,           EditHotkeyScreen_KeyPress, EditHotkeyScreen_TextChanged,
 	Menu_PointerDown,         Screen_TPointer,         Menu_PointerMove,          Screen_TMouseScroll,
 	Menu_Layout,            EditHotkeyScreen_ContextLost, EditHotkeyScreen_ContextRecreated
@@ -1050,6 +1058,8 @@ static void GenLevelScreen_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void GenLevelScreen_BuildMesh(void* screen) { }
+
 static void GenLevelScreen_Init(void* screen) {
 	static struct Widget* widgets[12];
 	struct GenLevelScreen* s = (struct GenLevelScreen*)screen;
@@ -1073,7 +1083,7 @@ static void GenLevelScreen_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE GenLevelScreen_VTABLE = {
-	GenLevelScreen_Init,        MenuScreen_Render,    Menu_CloseKeyboard,
+	GenLevelScreen_Init,        MenuScreen_Render,    Menu_CloseKeyboard,      GenLevelScreen_BuildMesh,
 	GenLevelScreen_KeyDown,     Screen_TInput,        GenLevelScreen_KeyPress, GenLevelScreen_TextChanged,
 	GenLevelScreen_PointerDown, Screen_TPointer,      Menu_PointerMove,        Screen_TMouseScroll,
 	Menu_Layout,          GenLevelScreen_ContextLost, GenLevelScreen_ContextRecreated
@@ -1124,6 +1134,8 @@ static void ClassicGenScreen_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void ClassicGenScreen_BuildMesh(void* screen) { }
+
 static void ClassicGenScreen_Init(void* screen) {
 	static struct Widget* widgets[4];
 	struct ClassicGenScreen* s = (struct ClassicGenScreen*)screen;
@@ -1138,7 +1150,7 @@ static void ClassicGenScreen_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE ClassicGenScreen_VTABLE = {
-	ClassicGenScreen_Init, MenuScreen_Render,  Menu_NullFunc,
+	ClassicGenScreen_Init, MenuScreen_Render,  Menu_NullFunc,    ClassicGenScreen_BuildMesh,
 	MenuScreen_KeyDown,    Screen_TInput,      Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,      Screen_TPointer,    Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,         Menu_ContextLost,   ClassicGenScreen_ContextRecreated
@@ -1375,6 +1387,8 @@ static void SaveLevelScreen_ContextRecreated(void* screen) {
 	ButtonWidget_SetConst(&s->cancel, "Cancel",                        &s->titleFont);
 }
 
+static void SaveLevelScreen_BuildMesh(void* screen) { }
+
 static void SaveLevelScreen_Init(void* screen) {
 	static struct Widget* widgets[6];
 	struct SaveLevelScreen* s = (struct SaveLevelScreen*)screen;
@@ -1410,7 +1424,7 @@ static void SaveLevelScreen_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE SaveLevelScreen_VTABLE = {
-	SaveLevelScreen_Init,    SaveLevelScreen_Render, Menu_CloseKeyboard,
+	SaveLevelScreen_Init,    SaveLevelScreen_Render, Menu_CloseKeyboard,       SaveLevelScreen_BuildMesh,
 	SaveLevelScreen_KeyDown, Screen_TInput,          SaveLevelScreen_KeyPress, SaveLevelScreen_TextChanged,
 	Menu_PointerDown,        Screen_TPointer,        Menu_PointerMove,         Screen_TMouseScroll,
 	Menu_Layout,           SaveLevelScreen_ContextLost, SaveLevelScreen_ContextRecreated
@@ -1717,6 +1731,8 @@ static void KeyBindingsScreen_ContextRecreated(void* screen) {
 	ButtonWidget_SetConst(&s->right, ">", &s->titleFont);
 }
 
+static void KeyBindingsScreen_BuildMesh(void* screen) { }
+
 static void KeyBindingsScreen_InitWidgets(struct KeyBindingsScreen* s, int y, int arrowsY, int leftLength, int btnWidth, const char* title) {
 	int origin, xOffset, i, xDir;
 	origin  = y;
@@ -1762,7 +1778,7 @@ static void KeyBindingsScreen_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE KeyBindingsScreen_VTABLE = {
-	KeyBindingsScreen_Init,    MenuScreen_Render,  Menu_NullFunc,
+	KeyBindingsScreen_Init,    MenuScreen_Render,  Menu_NullFunc,    KeyBindingsScreen_BuildMesh,
 	KeyBindingsScreen_KeyDown, Screen_TInput,      Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,          Screen_TPointer,    Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,             KeyBindingsScreen_ContextLost, KeyBindingsScreen_ContextRecreated
@@ -2216,8 +2232,10 @@ static void MenuOptionsScreen_ContextRecreated(void* screen) {
 	MenuOptionsScreen_RedrawInput(s);
 }
 
+static void MenuOptionsScreen_BuildMesh(void* screen) { }
+
 static const struct ScreenVTABLE MenuOptionsScreen_VTABLE = {
-	MenuOptionsScreen_Init,     MenuOptionsScreen_Render, MenuOptionsScreen_Free,
+	MenuOptionsScreen_Init,     MenuOptionsScreen_Render, MenuOptionsScreen_Free,        MenuOptionsScreen_BuildMesh,
 	MenuOptionsScreen_KeyDown,  Screen_TInput,            MenuOptionsScreen_KeyPress,    MenuOptionsScreen_TextChanged,
 	Menu_PointerDown,           Screen_TPointer,          MenuOptionsScreen_PointerMove, Screen_TMouseScroll,
 	MenuOptionsScreen_Layout, MenuOptionsScreen_ContextLost, MenuOptionsScreen_ContextRecreated
@@ -2955,6 +2973,8 @@ static void TexIdsOverlay_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void TexIdsOverlay_BuildMesh(void* screen) { }
+
 static void TexIdsOverlay_RenderTerrain(struct TexIdsOverlay* s) {
 	PackedCol col = PACKEDCOL_WHITE;
 	VertexP3fT2fC4b vertices[TEXID_OVERLAY_VERTICES_COUNT];
@@ -3055,7 +3075,7 @@ static int TexIdsOverlay_KeyDown(void* screen, int key) {
 }
 
 static const struct ScreenVTABLE TexIdsOverlay_VTABLE = {
-	TexIdsOverlay_Init,    TexIdsOverlay_Render, Menu_NullFunc,
+	TexIdsOverlay_Init,    TexIdsOverlay_Render, Menu_NullFunc,    TexIdsOverlay_BuildMesh,
 	TexIdsOverlay_KeyDown, Screen_FInput,        Screen_FKeyPress, Screen_FText,
 	Menu_PointerDown,      Screen_TPointer,      Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,         TexIdsOverlay_ContextLost, TexIdsOverlay_ContextRecreated
@@ -3109,6 +3129,8 @@ static void UrlWarningOverlay_ContextRecreated(void* screen) {
 	Font_Free(&textFont);
 }
 
+static void UrlWarningOverlay_BuildMesh(void* screen) { }
+
 static void UrlWarningOverlay_Init(void* screen) {
 	static struct Widget* widgets[6];
 	struct UrlWarningOverlay* s = (struct UrlWarningOverlay*)screen;
@@ -3122,7 +3144,7 @@ static void UrlWarningOverlay_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE UrlWarningOverlay_VTABLE = {
-	UrlWarningOverlay_Init, MenuScreen_Render, Menu_NullFunc,
+	UrlWarningOverlay_Init, MenuScreen_Render, Menu_NullFunc,    UrlWarningOverlay_BuildMesh,
 	Screen_TInput,          Screen_TInput,     Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,       Screen_TPointer,   Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,            Menu_ContextLost,  UrlWarningOverlay_ContextRecreated
@@ -3257,6 +3279,8 @@ static void TexPackOverlay_ContextRecreated(void* screen) {
 	Font_Free(&titleFont);
 }
 
+static void TexPackOverlay_BuildMesh(void* screen) { }
+
 static void TexPackOverlay_Init(void* screen) {
 	static struct Widget* widgets[8];
 	struct TexPackOverlay* s = (struct TexPackOverlay*)screen;
@@ -3271,7 +3295,7 @@ static void TexPackOverlay_Init(void* screen) {
 }
 
 static const struct ScreenVTABLE TexPackOverlay_VTABLE = {
-	TexPackOverlay_Init, TexPackOverlay_Render, Menu_NullFunc,
+	TexPackOverlay_Init, TexPackOverlay_Render, Menu_NullFunc,    TexPackOverlay_BuildMesh,
 	Screen_TInput,       Screen_TInput,         Screen_TKeyPress, Screen_TText,
 	Menu_PointerDown,    Screen_TPointer,       Menu_PointerMove, Screen_TMouseScroll,
 	Menu_Layout,       TexPackOverlay_ContextLost, TexPackOverlay_ContextRecreated

src/Screens.c

@@ -205,6 +205,8 @@ static void HUDScreen_ContextRecreated(void* screen) {
 	}
 }
 
+static void HUDScreen_BuildMesh(void* screen) { }
+
 static void HUDScreen_Render(void* screen, double delta) {
 	struct HUDScreen* s = (struct HUDScreen*)screen;
 	HUDScreen_Update(s, delta);
@@ -225,7 +227,7 @@ static void HUDScreen_Render(void* screen, double delta) {
 }
 
 static const struct ScreenVTABLE HUDScreen_VTABLE = {
-	Screen_NullFunc, HUDScreen_Render,    Screen_NullFunc,
+	Screen_NullFunc, HUDScreen_Render,    Screen_NullFunc,  HUDScreen_BuildMesh,
 	Screen_FInput,   Screen_FInput,       Screen_FKeyPress, Screen_FText,
 	Screen_FPointer, Screen_FPointer,     Screen_FPointer,  Screen_FMouseScroll,
 	Screen_NullFunc, HUDScreen_ContextLost, HUDScreen_ContextRecreated
@@ -603,6 +605,8 @@ static void ChatScreen_ContextRecreated(void* screen) {
 	if (s->showingList) ChatScreen_RemakePlayerList(s);
 }
 
+static void ChatScreen_BuildMesh(void* screen) { }
+
 static void ChatScreen_Layout(void* screen) {
 	struct ChatScreen* s = (struct ChatScreen*)screen;
 	Widget_Layout(&s->hotbar);
@@ -825,7 +829,7 @@ static void ChatScreen_Free(void* screen) {
 }
 
 static const struct ScreenVTABLE ChatScreen_VTABLE = {
-	ChatScreen_Init,        ChatScreen_Render, ChatScreen_Free,
+	ChatScreen_Init,        ChatScreen_Render, ChatScreen_Free,     ChatScreen_BuildMesh,
 	ChatScreen_KeyDown,     ChatScreen_KeyUp,  ChatScreen_KeyPress, ChatScreen_TextChanged,
 	ChatScreen_PointerDown, Screen_FPointer,   Screen_FPointer,     ChatScreen_MouseScroll,
 	ChatScreen_Layout, ChatScreen_ContextLost, ChatScreen_ContextRecreated
@@ -897,6 +901,8 @@ static void InventoryScreen_ContextRecreated(void* screen) {
 	TableWidget_Recreate(&s->table);
 }
 
+static void InventoryScreen_BuildMesh(void* screen) { }
+
 static void InventoryScreen_MoveToSelected(struct InventoryScreen* s) {
 	struct TableWidget* table = &s->table;
 	TableWidget_SetBlockTo(table, Inventory_SelectedBlock);
@@ -1008,7 +1014,7 @@ static int InventoryScreen_MouseScroll(void* screen, float delta) {
 }
 
 static const struct ScreenVTABLE InventoryScreen_VTABLE = {
-	InventoryScreen_Init,        InventoryScreen_Render,    InventoryScreen_Free,
+	InventoryScreen_Init,        InventoryScreen_Render,    InventoryScreen_Free,        InventoryScreen_BuildMesh,
 	InventoryScreen_KeyDown,     InventoryScreen_KeyUp,     Screen_TKeyPress,            Screen_TText,
 	InventoryScreen_PointerDown, InventoryScreen_PointerUp, InventoryScreen_PointerMove, InventoryScreen_MouseScroll,
 	InventoryScreen_Layout,  InventoryScreen_ContextLost, InventoryScreen_ContextRecreated
@@ -1074,6 +1080,8 @@ static void LoadingScreen_ContextRecreated(void* screen) {
 	LoadingScreen_SetMessage(s);
 }
 
+static void LoadingScreen_BuildMesh(void* screen) { }
+
 static void LoadingScreen_UpdateBackgroundVB(VertexP3fT2fC4b* vertices, int count, int atlasIndex, cc_bool* bound) {
 	if (!(*bound)) {
 		*bound = true;
@@ -1173,7 +1181,7 @@ CC_NOINLINE static void LoadingScreen_ShowCommon(const String* title, const Stri
 }
 
 static const struct ScreenVTABLE LoadingScreen_VTABLE = {
-	LoadingScreen_Init, LoadingScreen_Render, LoadingScreen_Free,
+	LoadingScreen_Init, LoadingScreen_Render, LoadingScreen_Free, LoadingScreen_BuildMesh,
 	Screen_TInput,      Screen_TInput,        Screen_TKeyPress,   Screen_TText,
 	Screen_TPointer,    Screen_TPointer,      Screen_TPointer,    Screen_TMouseScroll,
 	LoadingScreen_Layout, LoadingScreen_ContextLost, LoadingScreen_ContextRecreated
@@ -1243,7 +1251,7 @@ static void GeneratingScreen_Render(void* screen, double delta) {
 }
 
 static const struct ScreenVTABLE GeneratingScreen_VTABLE = {
-	GeneratingScreen_Init, GeneratingScreen_Render, LoadingScreen_Free,
+	GeneratingScreen_Init, GeneratingScreen_Render, LoadingScreen_Free, LoadingScreen_BuildMesh,
 	Screen_TInput,         Screen_TInput,           Screen_TKeyPress,   Screen_TText,
 	Screen_TPointer,       Screen_TPointer,         Screen_FPointer,    Screen_TMouseScroll,
 	LoadingScreen_Layout, LoadingScreen_ContextLost, LoadingScreen_ContextRecreated
@@ -1330,6 +1338,8 @@ static void DisconnectScreen_ContextRecreated(void* screen) {
 	ButtonWidget_Set(&s->reconnect, &msg, &s->titleFont);
 }
 
+static void DisconnectScreen_BuildMesh(void* screen) { }
+
 static void DisconnectScreen_Init(void* screen) {
 	struct DisconnectScreen* s = (struct DisconnectScreen*)screen;
 	TextWidget_Make(&s->title,   ANCHOR_CENTRE, ANCHOR_CENTRE, 0, -30);
@@ -1395,7 +1405,7 @@ static int DisconnectScreen_PointerMove(void* screen, int idx, int x, int y) {
 }
 
 static const struct ScreenVTABLE DisconnectScreen_VTABLE = {
-	DisconnectScreen_Init,        DisconnectScreen_Render, DisconnectScreen_Free,
+	DisconnectScreen_Init,        DisconnectScreen_Render, DisconnectScreen_Free,        DisconnectScreen_BuildMesh,
 	DisconnectScreen_KeyDown,     Screen_TInput,           Screen_TKeyPress,             Screen_TText,
 	DisconnectScreen_PointerDown, Screen_TPointer,         DisconnectScreen_PointerMove, Screen_TMouseScroll,
 	DisconnectScreen_Layout, DisconnectScreen_ContextLost, DisconnectScreen_ContextRecreated