archivemuh

archive/dusksdl2/display/ui/renderfps.c

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "renderfps.h"
+#include "display/render.h"
+#include "display/ui/rendertext.h"
+#include "time.h"
+#include "game.h"
+
+float_t RENDER_FPS_AVG = -1.0f;
+float_t RENDER_TPS_AVG = -1.0f;
+
+void renderFPSDraw(void) {
+  
+  if(TIME.delta > 0) {
+    float_t fps = 1.0f / TIME.realDelta;
+
+    if(RENDER_FPS_AVG == -1.0f) {
+      RENDER_FPS_AVG = fps;
+    } else {
+      RENDER_FPS_AVG = (RENDER_FPS_AVG + fps) / 2.0f;
+    }
+  }
+  
+  if(TIME.time != TIME.lastTick) {
+    float_t timeSinceLastTick = TIME.realTime - TIME.lastTick;
+    float_t tps = 1.0f / timeSinceLastTick;
+
+    if(RENDER_TPS_AVG == -1.0f) {
+      RENDER_TPS_AVG = tps;
+    } else {
+      RENDER_TPS_AVG = (RENDER_TPS_AVG + tps) / 2.0f;
+    }
+  }
+
+  char_t buffer[64];
+  snprintf(buffer, sizeof(buffer), "%.1f/%.1f", RENDER_FPS_AVG, RENDER_TPS_AVG);
+
+  int32_t width, height;
+  renderTextMeasure(buffer, &width, &height);
+  renderTextDraw(RENDER_WIDTH - width, 0, buffer, 0x00, 0xFF, 0x00);
+}