demo: support 100k+ frames in HUD

src/demo/demo.c

@@ -286,7 +286,6 @@ summary_table(struct ncdirect* nc, const char* spec){
     qprefix(results[i].timens, GIG, timebuf, 0);
     qprefix(results[i].stats.render_ns, GIG, rtimebuf, 0);
     bprefix(results[i].stats.render_bytes, 1, totalbuf, 0);
-    double avg = results[i].stats.render_ns / (double)results[i].stats.renders;
     printf("%2zu│%c│%*ss│%6lu│%*s│ %*ss│%3ld│%7.1f│%7.1f║%s\n", i,
            results[i].selector,
            PREFIXSTRLEN, timebuf,
@@ -295,8 +294,10 @@ summary_table(struct ncdirect* nc, const char* spec){
            PREFIXSTRLEN, rtimebuf,
            results[i].timens ?
             results[i].stats.render_ns * 100 / results[i].timens : 0,
-           results[i].stats.renders / ((double)results[i].timens / GIG),
-           GIG / avg,
+           results[i].timens ?
+            results[i].stats.renders / ((double)results[i].timens / GIG) : 0.0,
+           results[i].stats.renders ?
+            GIG * (double)results[i].stats.renders / results[i].stats.render_ns : 0.0,
            results[i].result < 0 ? "***FAILED" :
             results[i].result > 0 ? "***ABORTED" :
              !results[i].stats.renders ? "***SKIPPED"  : "");
@@ -316,8 +317,10 @@ summary_table(struct ncdirect* nc, const char* spec){
          totalframes, BPREFIXSTRLEN, totalbuf, PREFIXSTRLEN, rtimebuf,
          nsdelta ? totalrenderns * 100 / nsdelta : 0,
          nsdelta ? totalframes / ((double)nsdelta / GIG) : 0);
+  ncdirect_fg_rgb8(nc, 0xff, 0xb0, 0xb0);
+  fflush(stdout); // in case we print to stderr below, we want color from above
   if(failed){
-    fprintf(stderr, " Error running demo. Is \"%s\" the correct data path?\n", datadir);
+    fprintf(stderr, "\nError running demo. Is \"%s\" the correct data path?\n", datadir);
   }
   return failed;
 }

src/demo/hud.c

@@ -158,7 +158,7 @@ int hud_schedule(const char* demoname){
   int plen = HUD_COLS - 4 - NSLEN;
   while(e){
     hook = &e->next;
-    if(ncplane_printf_yx(hud, line, 0, "%-5d %*ju.%02jus %-*.*s", e->frames,
+    if(ncplane_printf_yx(hud, line, 0, "%-6d %*ju.%02jus %-*.*s", e->frames,
                           NSLEN - 3, e->totalns / GIG,
                           (e->totalns % GIG) / (GIG / 100),
                           plen, plen, e->name) < 0){
@@ -176,7 +176,7 @@ int hud_schedule(const char* demoname){
   clock_gettime(CLOCK_MONOTONIC, &cur);
   cure->startns = timespec_to_ns(&cur);
   running = cure;
-  if(ncplane_printf_yx(hud, line, 0, "%-5d %*ju.%02jus %-*.*s", cure->frames,
+  if(ncplane_printf_yx(hud, line, 0, "%-6d %*ju.%02jus %-*.*s", cure->frames,
                         NSLEN - 3, cure->totalns / GIG,
                         (cure->totalns % GIG) / (GIG / 100),
                         plen, plen, cure->name) < 0){
@@ -218,7 +218,7 @@ int demo_render(struct notcurses* nc){
     clock_gettime(CLOCK_MONOTONIC, &ts);
     uint64_t ns = timespec_to_ns(&ts) - running->startns;
     ++running->frames;
-    if(ncplane_printf_yx(hud, HUD_ROWS - 1, 0, "%-5d %*ju.%02jus %-*.*s",
+    if(ncplane_printf_yx(hud, HUD_ROWS - 1, 0, "%-6d %*ju.%02jus %-*.*s",
                          running->frames,
                          NSLEN - 3, ns / GIG, (ns % GIG) / (GIG / 100),
                          plen, plen, running->name) < 0){