From 519ae78ada36b922c64de8d37571db8d0ba0c944 Mon Sep 17 00:00:00 2001
From: Ulysse Cura <ulysse.cura@google.com>
Date: Mon, 17 Aug 2026 19:45:53 +0200
Subject: [PATCH] Added error handling in display update.

---
 src/display.c         | 22 ++++++++++++++++++----
 src/headers/display.h |  2 +-
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/display.c b/src/display.c
index 9eb6cf6..ff76464 100644
--- a/src/display.c
+++ b/src/display.c
@@ -99,9 +99,13 @@ inline int display_clear(void)
     return EXIT_SUCCESS;
 }
 
-inline void display_update(void)
+inline int display_update(void)
 {
-    SDL_RenderPresent(renderer);
+    if(!SDL_RenderPresent(renderer))
+    {
+        error_printf("Failed to present renderer : %s", SDL_GetError());
+        return EXIT_FAILURE;
+    }
 
 #if DEBUG >= 1
     float fps = 1000.0f / game.delta_time_ms;
@@ -118,8 +122,16 @@ inline void display_update(void)
     {
         fps_update_delta_time = 0.0f;
         char title[100];
-        sprintf(title, "2D_Engine | cur: %.2ffps | max: %.2ffps | low: %.2ffps", fps, max_fps_10s, low_fps_10s);
-        SDL_SetWindowTitle(window, title);
+        if(sprintf(title, "2D_Engine | cur: %.2ffps | max: %.2ffps | low: %.2ffps", fps, max_fps_10s, low_fps_10s) == -1)
+        {
+            error_printf("Sprintf failed : %d", errno);
+            return EXIT_FAILURE;
+        }
+        if(!SDL_SetWindowTitle(window, title))
+        {
+            error_printf("Failed to set window title : %s", SDL_GetError());
+            return EXIT_FAILURE;
+        }
     }
 
     static float fps_max_low_update_delta_time = 0.0f;
@@ -132,6 +144,8 @@ inline void display_update(void)
         low_fps_10s = 10000000.0f;
     }
 #endif // DEBUG >= 1
+
+    return EXIT_SUCCESS;
 }
 
 int display_draw_texture(texture_t *texture, const rect_t *src_rect, const frect_t *dst_frect, bool flip)
diff --git a/src/headers/display.h b/src/headers/display.h
index 6510803..e1f195f 100644
--- a/src/headers/display.h
+++ b/src/headers/display.h
@@ -26,7 +26,7 @@ int display_init(void);
 void display_exit(void);
 
 int display_clear(void);
-void display_update(void);
+int display_update(void);
 
 int display_draw_texture(texture_t *texture, const rect_t *src_rect, const frect_t *dst_frect, bool flip);
 int display_draw_frect(const frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a);