From 6c76f136e5c0793dbb3d716b51cfccd4b1e21cdf Mon Sep 17 00:00:00 2001
From: neonloop
Date: Fri, 12 Mar 2021 22:18:28 +0000
Subject: Brings back the built-in frame counter

---
 shell/emu/core.c |  1 +
 src/gfx16.c      | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/shell/emu/core.c b/shell/emu/core.c
index 99759a6..41bd095 100644
--- a/shell/emu/core.c
+++ b/shell/emu/core.c
@@ -270,6 +270,7 @@ void init_sfc_setting(void)
 #endif
    Settings.SpeedHacks = true;
    Settings.HBlankStart = (256 * Settings.H_Max) / SNES_HCOUNTER_MAX;
+   Settings.DisplayFrameRate = false;
 }
 
 void Init_SFC(void)
diff --git a/src/gfx16.c b/src/gfx16.c
index db35e6a..0c17f34 100644
--- a/src/gfx16.c
+++ b/src/gfx16.c
@@ -661,6 +661,9 @@ void S9xEndScreenRefresh()
       IPPU.ColorsChanged = FALSE;
       //}
 
+      if (Settings.DisplayFrameRate)
+         S9xDisplayFrameRate();
+
       S9xDeinitUpdate(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight,
                       1);
    }
@@ -2531,6 +2534,19 @@ void DisplayChar(uint8* Screen, uint8 c)
    }
 }
 
+void S9xDisplayFrameRate()
+{
+	char string[16];
+   uint8 *Screen = GFX.Screen;
+
+	sprintf(string, "%02d/%02d", IPPU.DisplayedRenderedFrameCount, (int)Memory.ROMFramesPerSecond);
+
+	for (int i = 0; i < 5; i++) {
+		DisplayChar(Screen, string[i]);
+		Screen += (font_width - 1) * sizeof(uint16);
+	}
+}
+
 static void S9xUpdateScreenTransparency()  // ~30-50ms! (called from FLUSH_REDRAW())
 {
    uint32 starty = GFX.StartY;
-- 
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