From 44a0008d4e8f80fce9697bbde09193e837bc0072 Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@Simon-Elementary.(none)>
Date: Mon, 17 Oct 2011 00:16:43 +0100
Subject: [PATCH] Debug performance/time graph

---
 includes/defines.h | 11 +++++++++-
 src/graphics.c     | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 src/main.c         | 51 +++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 113 insertions(+), 2 deletions(-)

diff --git a/includes/defines.h b/includes/defines.h
index 667ad69d1..62e0c481b 100644
--- a/includes/defines.h
+++ b/includes/defines.h
@@ -138,6 +138,8 @@ typedef unsigned int pixel;
 #define DEBUG_PARTS		0x0001
 #define DEBUG_PARTCOUNT	0x0002
 #define DEBUG_DRAWTOOL	0x0004
+#define DEBUG_PERFORMANCE_CALC 0x0008
+#define DEBUG_PERFORMANCE_FRAME 0x0010
 
 typedef unsigned char uint8;
 
@@ -161,11 +163,18 @@ extern int kiosk_enable;
 extern int aheat_enable;
 extern int decorations_enable;
 extern int hud_enable;
-extern int debug_flags;
 extern int pretty_powder;
 int limitFPS;
 int water_equal_test;
 
+extern int debug_flags;
+#define DEBUG_PERF_FRAMECOUNT 256
+extern int debug_perf_istart;
+extern int debug_perf_iend;
+extern long debug_perf_frametime[DEBUG_PERF_FRAMECOUNT];
+extern long debug_perf_partitime[DEBUG_PERF_FRAMECOUNT];
+extern long debug_perf_time;
+
 extern int active_menu;
 
 extern int sys_pause;
diff --git a/src/graphics.c b/src/graphics.c
index 5d7354dd4..60572dc48 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -2718,6 +2718,59 @@ int sdl_open(void)
 int draw_debug_info(pixel* vid, int lm, int lx, int ly, int cx, int cy, int line_x, int line_y)
 {
 	char infobuf[256];
+	if(debug_flags & DEBUG_PERFORMANCE_FRAME || debug_flags & DEBUG_PERFORMANCE_CALC)
+	{
+		int t1, t2, x = 0, i = debug_perf_istart;
+		float partiavg = 0, frameavg = 0;
+		while(i != debug_perf_iend)
+		{
+			partiavg += abs(debug_perf_partitime[i]/100000);
+			frameavg += abs(debug_perf_frametime[i]/100000);
+			if(debug_flags & DEBUG_PERFORMANCE_CALC)
+				t1 = abs(debug_perf_partitime[i]/100000);
+			else
+				t1 = 0;
+				
+			if(debug_flags & DEBUG_PERFORMANCE_FRAME)
+				t2 = abs(debug_perf_frametime[i]/100000);
+			else
+				t2 = 0;
+				
+			if(t1 > YRES)
+				t1 = YRES;
+			if(t1+t2 > YRES)
+				t2 = YRES-t1;
+				
+			if(t1>0)
+				draw_line(vid, x, YRES, x, YRES-t1, 0, 255, 120, XRES+BARSIZE);
+			if(t2>0)	
+				draw_line(vid, x, YRES-t1, x, YRES-(t1+t2), 255, 120, 0, XRES+BARSIZE);
+				
+			i++;
+			x++;
+			i %= DEBUG_PERF_FRAMECOUNT;
+		}
+		
+		if(debug_flags & DEBUG_PERFORMANCE_CALC)
+			t1 = abs(partiavg / x);
+		else
+			t1 = 0;
+			
+		if(debug_flags & DEBUG_PERFORMANCE_FRAME)
+			t2 = abs(frameavg / x);
+		else
+			t2 = 0;
+		
+		if(t1 > YRES)
+			t1 = YRES;
+		if(t1+t2 > YRES)
+			t2 = YRES-t1;
+		
+		if(t1>0)
+			fillrect(vid, x, YRES-t1-1, 5, t1+2, 0, 255, 0, 255);
+		if(t2>0)	
+			fillrect(vid, x, (YRES-t1)-t2-1, 5, t2+1, 255, 0, 0, 255);
+	}
 	if(debug_flags & DEBUG_DRAWTOOL)
 	{
 		if(lm == 1) //Line tool
diff --git a/src/main.c b/src/main.c
index 09dfffd0e..2615e4fd2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -187,8 +187,13 @@ int frameidx = 0;
 //int CGOL = 0;
 //int GSPEED = 1;//causes my .exe to crash..
 int sound_enable = 0;
-int debug_flags = 0;
 
+int debug_flags = 0;
+int debug_perf_istart = 1;
+int debug_perf_iend = 0;
+long debug_perf_frametime[DEBUG_PERF_FRAMECOUNT];
+long debug_perf_partitime[DEBUG_PERF_FRAMECOUNT];
+long debug_perf_time = 0;
 
 sign signs[MAXSIGNS];
 
@@ -1813,8 +1818,52 @@ int main(int argc, char *argv[])
 		if(ngrav_enable && drawgrav_enable)
 			draw_grav(vid_buf);
 		draw_walls(part_vbuf);
+		
+		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
+		{
+			#ifdef WIN32
+			#elif defined(MACOSX)
+			#else
+				struct timespec ts;
+				clock_gettime(CLOCK_REALTIME, &ts);
+				debug_perf_time = ts.tv_nsec;
+			#endif
+		}
+		
 		update_particles(part_vbuf); //update everything
+			
+		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
+		{
+			#ifdef WIN32
+			#elif defined(MACOSX)
+			#else
+				struct timespec ts;
+				clock_gettime(CLOCK_REALTIME, &ts);
+				
+				debug_perf_partitime[debug_perf_iend]  = ts.tv_nsec - debug_perf_time;
+				
+				debug_perf_time = ts.tv_nsec;
+			#endif
+		}
+		
 		render_parts(part_vbuf); //draw particles
+		
+		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
+		{
+			#ifdef WIN32
+			#elif defined(MACOSX)
+			#else
+				struct timespec ts;
+				clock_gettime(CLOCK_REALTIME, &ts);
+				
+				debug_perf_frametime[debug_perf_iend]  = ts.tv_nsec - debug_perf_time;
+			#endif
+			debug_perf_iend++;
+			debug_perf_iend %= DEBUG_PERF_FRAMECOUNT;
+			debug_perf_istart++;
+			debug_perf_istart %= DEBUG_PERF_FRAMECOUNT;
+		}
+		
 		if(sl == WL_GRAV+100 || sr == WL_GRAV+100)
 			draw_grav_zones(part_vbuf);