From c5534ffca743fc3f4c38772cc76a1c3772c898b7 Mon Sep 17 00:00:00 2001
From: nihui <nihuini@tencent.com>
Date: Tue, 7 May 2024 11:31:08 +0800
Subject: [PATCH] fix create_pipeline crash in vulkan-enabled layer without
 calling load_param/load_model first (#5410)

---
 src/layer.cpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/layer.cpp b/src/layer.cpp
index cca3e77bf1f..3c40cbd67ca 100644
--- a/src/layer.cpp
+++ b/src/layer.cpp
@@ -362,9 +362,16 @@ class Layer_final : public Layer
 #if NCNN_VULKAN
         if (layer_vulkan)
         {
-            int ret = layer_vulkan->create_pipeline(opt);
-            get_layer_properties();
-            return ret;
+            if (vkdev)
+            {
+                int ret = layer_vulkan->create_pipeline(opt);
+                get_layer_properties();
+                return ret;
+            }
+
+            // fallback to cpu layer
+            delete layer_vulkan;
+            layer_vulkan = 0;
         }
 #endif // NCNN_VULKAN