put launcher titles on 3DS bottom screen

src/LScreens.c

@@ -118,18 +118,6 @@ static void LScreen_MouseUp(struct LScreen* s, int idx) { }
 static void LScreen_MouseWheel(struct LScreen* s, float delta) { }
 
 static void LScreen_DrawBackground(struct LScreen* s, struct Context2D* ctx) {
-	// I don't know of a good place to do this, so I'm sticking it here
-#ifdef __3DS__
-	enum Screen3DS scr = Window_3DS_SetRenderScreen(TOP_SCREEN);
-
-	// Draw top screen background
-	Launcher_DrawBackgroundAll(ctx);
-	Rect2D r = { 0, 0, WindowInfo.Width, WindowInfo.Height };
-	Window_DrawFramebuffer(r);
-
-	Window_3DS_SetRenderScreen(scr);
-#endif
-
 	if (!s->title) {
 		Launcher_DrawBackground(ctx, 0, 0, ctx->width, ctx->height);
 		return;

src/Launcher.c

@@ -536,6 +536,20 @@ void Launcher_DrawTitle(struct FontDesc* font, const char* text, struct Context2
 	/* Skip dragging logo when very small window to save space */
 	if (Window_Main.Height < 240) return;
 
+#ifdef __3DS__
+	/* Put title on top screen */
+	enum Screen3DS scr = Window_3DS_SetRenderScreen(TOP_SCREEN);
+	struct Bitmap bmp;
+	struct Context2D topCtx;
+
+	ctx = &topCtx;
+	bmp.width  = max(Window_Main.Width,  1);
+	bmp.height = max(Window_Main.Height, 1);
+	Window_AllocFramebuffer(&bmp);
+	Context2D_Wrap(ctx, &bmp);
+	Launcher_DrawBackgroundAll(ctx);
+#endif
+
 	DrawTextArgs_Make(&args, &title, font, false);
 	x = ctx->width / 2 - Drawer2D_TextWidth(&args) / 2;
 
@@ -543,6 +557,11 @@ void Launcher_DrawTitle(struct FontDesc* font, const char* text, struct Context2
 	Context2D_DrawText(ctx, &args, x + Display_ScaleX(4), Display_ScaleY(4));
 	Drawer2D.Colors['f'] = BITMAPCOLOR_WHITE;
 	Context2D_DrawText(ctx, &args, x,                     0);
+
+#ifdef __3DS__
+	Window_DrawFramebuffer((Rect2D){ 0, 0, bmp.width, bmp.height });
+	Window_3DS_SetRenderScreen(scr);
+#endif
 }
 
 void Launcher_MakeTitleFont(struct FontDesc* font) {

src/Window_3DS.c

@@ -186,10 +186,16 @@ void Window_UpdateRawMouse(void)  { }
 /*########################################################################################################################*
 *------------------------------------------------------Framebuffer--------------------------------------------------------*
 *#########################################################################################################################*/
-static struct Bitmap fb_bmp;
+static struct Bitmap top_fb_bmp;
+static struct Bitmap bottom_fb_bmp;
 void Window_AllocFramebuffer(struct Bitmap* bmp) {
 	bmp->scan0 = (BitmapCol*)Mem_Alloc(bmp->width * bmp->height, 4, "window pixels");
-	fb_bmp = *bmp;
+	if (renderScreen == TOP_SCREEN) {
+		top_fb_bmp = *bmp;
+	}
+	else {
+		bottom_fb_bmp = *bmp;
+	}
 }
 
 void Window_DrawFramebuffer(Rect2D r) {
@@ -197,7 +203,7 @@ void Window_DrawFramebuffer(Rect2D r) {
 	gfxScreen_t screen = (renderScreen == TOP_SCREEN) ? GFX_TOP : GFX_BOTTOM;
 	gfxSetDoubleBuffering(screen, false);
 	u8* fb = gfxGetFramebuffer(screen, GFX_LEFT, &width, &height);
-
+	struct Bitmap *bmp = (renderScreen == TOP_SCREEN) ? &top_fb_bmp : &bottom_fb_bmp;
 	// SRC y = 0 to 240
 	// SRC x = 0 to 400
 	// DST X = 0 to 240
@@ -206,7 +212,7 @@ void Window_DrawFramebuffer(Rect2D r) {
 	for (int y = r.y; y < r.y + r.Height; y++)
 		for (int x = r.x; x < r.x + r.Width; x++)
 	{
-		BitmapCol color = Bitmap_GetPixel(&fb_bmp, x, y);
+		BitmapCol color = Bitmap_GetPixel(bmp, x, y);
 		int addr   = (width - 1 - y + x * width) * 3; // TODO -1 or not
 		fb[addr+0] = BitmapCol_B(color);
 		fb[addr+1] = BitmapCol_G(color);
@@ -217,10 +223,12 @@ void Window_DrawFramebuffer(Rect2D r) {
 	gfxFlushBuffers();
 	//gfxSwapBuffers();
 	// TODO: tearing??
+	/*
 	gfxSetDoubleBuffering(GFX_TOP, false);
 	gfxScreenSwapBuffers(GFX_TOP, true);
 	gfxSetDoubleBuffering(GFX_TOP, true);
 	gfxScreenSwapBuffers(GFX_BOTTOM, true);
+	*/
 }
 
 void Window_FreeFramebuffer(struct Bitmap* bmp) {