display: add display_get_current_framebuffer

DragonMinded · Nov 18, 2024 · 253dbc9 · 253dbc9
1 parent a2c2f9f
commit 253dbc9
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Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/include/display.h b/include/display.h
@@ -342,6 +342,11 @@ float display_get_delta_time(void);
  */
 void display_set_fps_limit(float fps);
 
+/**
+ * @brief Returns a surface that points to the framebuffer currently being shown on screen.
+ */
+surface_t display_get_current_framebuffer(void);
+
 /** @cond */
 __attribute__((deprecated("use display_get or display_try_get instead")))
 static inline surface_t* display_lock(void) {

diff --git a/src/display.c b/src/display.c
@@ -640,4 +640,13 @@ void display_set_fps_limit(float fps)
     enable_interrupts();
 }
 
+surface_t display_get_current_framebuffer(void)
+{
+    return surface_make_linear(
+        VirtualUncachedAddr(*VI_ORIGIN), 
+        display_get_bitdepth() == 2 ? FMT_RGBA16 : FMT_RGBA32,
+        display_get_width(),
+        display_get_height());
+}
+
 extern inline void vi_write_config(const vi_config_t* config);