vtgl

Commit: cf566d9520dd9278f38630d5a83474592abb5d0d
Parent: de9cb651aa6eabfd3e2dd83c07ddd10be667df2f
Author: Randy Palamar
Date:   Sun, 29 Sep 2024 13:25:17 -0600

add glyph cache stats to debug overlay

Diffstat:
M
debug.c
 | 
25
+++++++++++++++++++++++++
M
util.h
 | 
11
+++++++----

2 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/debug.c b/debug.c
@@ -259,6 +259,7 @@ draw_debug_overlay(Term *t, RenderPushBuffer *rpb)
 	v2 ws  = t->gl.window_size;
 	s8 buf = s8alloc(&t->arena_for_frame, 128);
 
+	static GlyphCacheStats glyph_stats;
 	static Rect r;
 	static f32 max_text_width;
 	r.pos.x  = ws.w - 1.1 * max_text_width;
@@ -309,6 +310,30 @@ draw_debug_overlay(Term *t, RenderPushBuffer *rpb)
 		if (ts.w > max_text_width) max_text_width = ts.w;
 	}
 
+	GlyphCacheStats new_glyph_stats = get_and_clear_glyph_cache_stats(&t->fa.glyph_cache);
+	if (new_glyph_stats.hit_count != 0)
+		glyph_stats = new_glyph_stats;
+	{
+		v2 ts     = debug_measure_text(t, &t->debug_font, s8("Glyph Cache Stats:"), 1);
+		txt_pos.y = (u32)(txt_pos.y - ts.y - line_pad);
+		txt_pos.y = (u32)(txt_pos.y - ts.y - line_pad);
+		debug_draw_text(t, rpb, s8("Glyph Cache Stats:"), txt_pos, (Colour){.rgba = 0x1e9e33ff}, 1);
+
+		static char *fmts[ARRAY_COUNT(glyph_stats.E)] = {
+			"  Hits:     %u",
+			"  Misses:   %u",
+			"  Recycles: %u",
+		};
+		for (u32 i = 0; i < ARRAY_COUNT(glyph_stats.E); i++) {
+			s8 txt    = buf;
+			txt.len   = snprintf((char *)txt.data, buf.len, fmts[i], glyph_stats.E[i]);
+			ts        = debug_measure_text(t, &t->debug_font, txt, 1);
+			txt_pos.y = (u32)(txt_pos.y - ts.y - line_pad);
+			debug_draw_text(t, rpb, txt, txt_pos, (Colour){.rgba = 0x1e9e33ff}, 1);
+			if (ts.w > max_text_width) max_text_width = ts.w;
+		}
+	}
+
 	r.pos.y  = txt_pos.y - 2 * line_pad;
 	r.size.h = ws.h - r.pos.y;
 }
diff --git a/util.h b/util.h
@@ -327,10 +327,13 @@ typedef struct {
 	b32   uploaded_to_gpu;
 } CachedGlyph;
 
-typedef struct {
-	u32 hit_count;
-	u32 miss_count;
-	u32 recycle_count;
+typedef union {
+	struct {
+		u32 hit_count;
+		u32 miss_count;
+		u32 recycle_count;
+	};
+	u32 E[3];
 } GlyphCacheStats;
 
 typedef struct {