ui, revise status line handling

platform/common/emu.c

@@ -1366,7 +1366,6 @@ void emu_loop(void)
 	char *notice_msg = NULL;
 	char fpsbuff[24];
 	int fskip_cnt = 0;
-	int statclr_cnt = 4;
 
 	fpsbuff[0] = 0;
 
@@ -1415,9 +1414,7 @@ void emu_loop(void)
 			{
 				notice_msg_time = 0;
 				notice_msg = NULL;
-				/* clear all buffers if multi buffering */
 				plat_status_msg_clear();
-				statclr_cnt = 4;
 			}
 			else {
 				int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];
@@ -1527,12 +1524,6 @@ void emu_loop(void)
 		if (!skip && flip_after_sync)
 			plat_video_flip();
 
-		if (!skip && statclr_cnt > 0) {
-			// clear stat msg area in case of multi buffering
-			plat_status_msg_clear();
-			statclr_cnt --;
-		}
-
 		pprof_end(main);
 	}
 

platform/common/emu.h

@@ -176,6 +176,10 @@ void plat_video_set_buffer(void *);
 
 void plat_update_volume(int has_changed, int is_up);
 
+/* should be in libpicofe/plat.h */
+void plat_video_clear_status(void);
+void plat_video_clear_buffers(void);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif

platform/common/plat_sdl.c

@@ -159,6 +159,8 @@ void rgb565_to_uyvy(void *d, const void *s, int pixels)
   }
 }
 
+static int clear_buf_cnt, clear_stat_cnt;
+
 void plat_video_flip(void)
 {
 	if (plat_sdl_overlay != NULL) {
@@ -183,6 +185,16 @@ void plat_video_flip(void)
 			SDL_Flip(plat_sdl_screen);
 		g_screen_ptr = plat_sdl_screen->pixels;
 		plat_video_set_buffer(g_screen_ptr);
+		if (clear_buf_cnt) {
+			memset(g_screen_ptr, 0, plat_sdl_screen->w*plat_sdl_screen->h * 2);
+			clear_buf_cnt--;
+		}
+	}
+	if (clear_stat_cnt) {
+		unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_ppitch * g_screen_height;
+		int l = g_screen_ppitch * 8;
+		memset((int *)(d - l), 0, l * 2);
+		clear_stat_cnt--;
 	}
 }
 
@@ -190,6 +202,21 @@ void plat_video_wait_vsync(void)
 {
 }
 
+void plat_video_clear_status(void)
+{
+	clear_stat_cnt = 3; // do it thrice in case of triple buffering
+}
+
+void plat_video_clear_buffers(void)
+{
+	if (plat_sdl_overlay != NULL || plat_sdl_gl_active)
+		memset(shadow_fb, 0, plat_sdl_screen->w*plat_sdl_screen->h * 2);
+	else {
+		memset(g_screen_ptr, 0, plat_sdl_screen->w*plat_sdl_screen->h * 2);
+		clear_buf_cnt = 3; // do it thrice in case of triple buffering
+	}
+}
+
 void plat_video_menu_enter(int is_rom_loaded)
 {
 	if (SDL_MUSTLOCK(plat_sdl_screen))

platform/gp2x/emu.c

@@ -433,29 +433,31 @@ void plat_video_wait_vsync(void)
 
 void plat_status_msg_clear(void)
 {
-	int is_8bit = !is_16bit_mode();
+	int i, is_8bit = !is_16bit_mode();
+
+	for (i = 0; i < 4; i++) {
 		if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
 			/* ugh.. */
 			int u, *p;
 			if (is_8bit) {
-			p = (int *)g_screen_ptr + (240-8) / 4;
+				p = (int *)gp2x_screens[i] + (240-8) / 4;
 				for (u = 320; u > 0; u--, p += 240/4)
 					p[0] = p[1] = 0xe0e0e0e0;
 			} else {
-			p = (int *)g_screen_ptr + (240-8)*2 / 4;
+				p = (int *)gp2x_screens[i] + (240-8)*2 / 4;
 				for (u = 320; u > 0; u--, p += 240*2/4)
 					p[0] = p[1] = p[2] = p[3] = 0;
 			}
-		return;
 		} else {
 			if (is_8bit) {
-			char *d = (char *)g_screen_ptr + 320 * (240-8);
+				char *d = (char *)gp2x_screens[i] + 320 * (240-8);
 				memset32((int *)d, 0xe0, 320 * 8 / 4);
 			} else {
-			short *d = (short *)g_screen_ptr + 320 * (240-8);
+				char *d = (char *)gp2x_screens[i] + 320*2 * (240-8);
 				memset32((int *)d, 0, 2*320 * 8 / 4);
 			}
 		}
+	}
 }
 
 void plat_status_msg_busy_next(const char *msg)

platform/linux/emu.c

@@ -24,7 +24,6 @@ enum renderer_types { RT_16BIT, RT_8BIT_ACC, RT_8BIT_FAST, RT_COUNT };
 
 static int out_x, out_y;
 static int out_w, out_h;
-static int clr_cnt;
 
 void pemu_prep_defconfig(void)
 {
@@ -84,10 +83,6 @@ void pemu_finalize_frame(const char *fps, const char *notice)
 
 void plat_video_set_buffer(void *buf)
 {
-	if (clr_cnt > 0) {
-		memset32(g_screen_ptr, 0, g_screen_ppitch*g_screen_height*2 / 4);
-		clr_cnt --;
-	}
 	if (currentConfig.renderer == RT_16BIT || (PicoIn.AHW & PAHW_32X))
 		PicoDrawSetOutBuf(g_screen_ptr, g_screen_ppitch * 2);
 }
@@ -118,7 +113,6 @@ static void apply_renderer(void)
 		PicoDrawSetOutBuf(g_screen_ptr, g_screen_ppitch * 2);
 
 	Pico.m.dirtyPal = 1;
-	clr_cnt = 4;
 }
 
 void plat_video_toggle_renderer(int change, int is_menu)
@@ -137,9 +131,7 @@ void plat_video_toggle_renderer(int change, int is_menu)
 
 void plat_status_msg_clear(void)
 {
-	unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_ppitch * g_screen_height;
+	plat_video_clear_status();
-	int l = g_screen_ppitch * 8;
-	memset32((int *)(d - l), 0, l * 2 / 4);
 }
 
 void plat_status_msg_busy_next(const char *msg)
@@ -153,7 +145,6 @@ void plat_status_msg_busy_next(const char *msg)
 
 void plat_status_msg_busy_first(const char *msg)
 {
-	clr_cnt = 4;
 	plat_status_msg_busy_next(msg);
 }
 
@@ -187,7 +178,7 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
 	// clear whole screen in all buffers
 	if (currentConfig.renderer != RT_16BIT && !(PicoIn.AHW & PAHW_32X))
 		memset32(Pico.est.Draw2FB, 0xe0e0e0e0, (320+8) * (8+240+8) / 4);
-	clr_cnt = 4;
+	plat_video_clear_buffers();
 
 	out_y = start_line; out_x = (is_32cols ? 32 : 0);
 	out_h = line_count; out_w = (is_32cols ? 256:320);
@@ -196,6 +187,7 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
 void pemu_loop_prep(void)
 {
 	apply_renderer();
+	plat_video_clear_buffers();
 }
 
 void pemu_loop_end(void)