From c2f46bf38356d8acf57f4d58be8af8a36409af66 Mon Sep 17 00:00:00 2001
From: Wildan M <willnode@wellosoft.net>
Date: Sun, 12 Apr 2026 12:39:09 +0700
Subject: [PATCH] drivers/graphics: Add API to check if shadow buffer present

---
 drivers/graphics/graphics-ipc/src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/graphics/graphics-ipc/src/lib.rs b/drivers/graphics/graphics-ipc/src/lib.rs
index 5c24df1d0f..285b304372 100644
--- a/drivers/graphics/graphics-ipc/src/lib.rs
+++ b/drivers/graphics/graphics-ipc/src/lib.rs
@@ -82,6 +82,10 @@ impl CpuBackedBuffer {
         &self.buffer
     }
 
+    pub fn has_shadow_buf(&self) -> bool {
+        self.shadow.is_some()
+    }
+
     pub fn shadow_buf(&mut self) -> &mut [u8] {
         self.shadow.as_deref_mut().unwrap_or(&mut *self.map)
     }