diff --git a/src/layer/arm/deconvolution_arm.cpp b/src/layer/arm/deconvolution_arm.cpp
index 80b19a001..bdff0623a 100644
--- a/src/layer/arm/deconvolution_arm.cpp
+++ b/src/layer/arm/deconvolution_arm.cpp
@@ -299,12 +299,7 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
     size_t out_elemsize = elemsize / elempack * out_elempack;
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.workspace_allocator);
     }
@@ -632,27 +627,19 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
         }
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -692,7 +679,16 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;
@@ -742,12 +738,7 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
     int outh = (h - 1) * stride + kernel_size;
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output, elemsize, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output, elemsize, opt.workspace_allocator);
     }
@@ -761,27 +752,19 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
 
     deconv(bottom_blob, top_blob_bordered, weight_data, bias_data, opt);
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -821,7 +804,16 @@ int Deconvolution_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opti
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     if (activation)
diff --git a/src/layer/arm/deconvolutiondepthwise_arm.cpp b/src/layer/arm/deconvolutiondepthwise_arm.cpp
index 2bae9f13f..8f8ba429d 100644
--- a/src/layer/arm/deconvolutiondepthwise_arm.cpp
+++ b/src/layer/arm/deconvolutiondepthwise_arm.cpp
@@ -397,12 +397,7 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
     {
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.workspace_allocator);
     }
@@ -510,27 +505,19 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
             }
         }
 
-        if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-        {
-            top_blob = top_blob_bordered;
-        }
-        else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+        if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
         {
+            Mat top_blob_bordered_adj = top_blob_bordered;
             if (output_pad_right > 0 || output_pad_bottom > 0)
             {
-                Mat top_blob_unbordered;
-                Option opt_ub = opt;
-                opt_ub.blob_allocator = opt.workspace_allocator;
-                copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-                if (top_blob_unbordered.empty())
+                Option opt_b = opt;
+                opt_b.blob_allocator = opt.workspace_allocator;
+                copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+                if (top_blob_bordered_adj.empty())
                     return -100;
-
-                copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-            }
-            else
-            {
-                copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
             }
+
+            copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
             if (top_blob.empty())
                 return -100;
 
@@ -570,7 +557,16 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
         }
         else
         {
-            top_blob = top_blob_bordered;
+            if (output_pad_right > 0 || output_pad_bottom > 0)
+            {
+                copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+                if (top_blob.empty())
+                    return -100;
+            }
+            else
+            {
+                top_blob = top_blob_bordered;
+            }
         }
 
         return 0;
@@ -940,27 +936,19 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
         top_blob_bordered = top_blob_bordered_unpacked;
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -1000,7 +988,16 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;
@@ -1009,12 +1006,7 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
 #endif // __ARM_NEON
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output, elemsize, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output, elemsize, opt.workspace_allocator);
     }
@@ -1065,27 +1057,19 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
         }
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -1125,7 +1109,16 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     if (activation)
diff --git a/src/layer/deconvolution.cpp b/src/layer/deconvolution.cpp
index adf5db585..633dae12a 100644
--- a/src/layer/deconvolution.cpp
+++ b/src/layer/deconvolution.cpp
@@ -86,12 +86,7 @@ int Deconvolution::forward(const Mat& bottom_blob, Mat& top_blob, const Option&
     int outh = (h - 1) * stride_h + kernel_extent_h;
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output, elemsize, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output, elemsize, opt.workspace_allocator);
     }
@@ -207,27 +202,19 @@ int Deconvolution::forward(const Mat& bottom_blob, Mat& top_blob, const Option&
         }
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -267,7 +254,16 @@ int Deconvolution::forward(const Mat& bottom_blob, Mat& top_blob, const Option&
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;
diff --git a/src/layer/deconvolutiondepthwise.cpp b/src/layer/deconvolutiondepthwise.cpp
index 095881982..c38d69c50 100644
--- a/src/layer/deconvolutiondepthwise.cpp
+++ b/src/layer/deconvolutiondepthwise.cpp
@@ -91,12 +91,7 @@ int DeconvolutionDepthWise::forward(const Mat& bottom_blob, Mat& top_blob, const
     int outh = (h - 1) * stride_h + kernel_extent_h;
 
     Mat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered = top_blob;
-        top_blob_bordered.create(outw, outh, num_output, elemsize, opt.blob_allocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output, elemsize, opt.workspace_allocator);
     }
@@ -303,27 +298,19 @@ int DeconvolutionDepthWise::forward(const Mat& bottom_blob, Mat& top_blob, const
         }
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        Mat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            Mat top_blob_unbordered;
-            Option opt_ub = opt;
-            opt_ub.blob_allocator = opt.workspace_allocator;
-            copy_cut_border(top_blob_bordered, top_blob_unbordered, pad_top, pad_bottom, pad_left, pad_right, opt_ub);
-            if (top_blob_unbordered.empty())
+            Option opt_b = opt;
+            opt_b.blob_allocator = opt.workspace_allocator;
+            copy_make_border(top_blob_bordered, top_blob_bordered_adj, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt_b);
+            if (top_blob_bordered_adj.empty())
                 return -100;
-
-            copy_make_border(top_blob_unbordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
-        }
-        else
-        {
-            copy_cut_border(top_blob_bordered, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         }
+
+        copy_cut_border(top_blob_bordered_adj, top_blob, pad_top, pad_bottom, pad_left, pad_right, opt);
         if (top_blob.empty())
             return -100;
 
@@ -363,7 +350,16 @@ int DeconvolutionDepthWise::forward(const Mat& bottom_blob, Mat& top_blob, const
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            copy_make_border(top_blob_bordered, top_blob, 0, output_pad_bottom, 0, output_pad_right, BORDER_CONSTANT, 0.f, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;
diff --git a/src/layer/vulkan/deconvolution_vulkan.cpp b/src/layer/vulkan/deconvolution_vulkan.cpp
index b341bf5cd..82187944a 100644
--- a/src/layer/vulkan/deconvolution_vulkan.cpp
+++ b/src/layer/vulkan/deconvolution_vulkan.cpp
@@ -399,11 +399,7 @@ int Deconvolution_vulkan::forward(const VkMat& bottom_blob, VkMat& top_blob, VkC
     }
 
     VkMat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.blob_vkallocator, opt.staging_vkallocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.workspace_vkallocator, opt.staging_vkallocator);
     }
@@ -470,43 +466,26 @@ int Deconvolution_vulkan::forward(const VkMat& bottom_blob, VkMat& top_blob, VkC
 
     cmd.record_pipeline(pipeline, bindings, constants, top_blob_bordered);
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        VkMat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            VkMat top_blob_unbordered;
-            {
-                ncnn::Option opt_ub = opt;
-                opt_ub.blob_vkallocator = opt.workspace_vkallocator;
-
-                VkMat reference_blob;
-                reference_blob.dims = 2;
-                reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-                reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
-
-                std::vector<VkMat> crop_bottom_blobs(2);
-                crop_bottom_blobs[0] = top_blob_bordered;
-                crop_bottom_blobs[1] = reference_blob;
-                std::vector<VkMat> crop_top_blobs(1);
-                crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt_ub);
-                top_blob_unbordered = crop_top_blobs[0];
-            }
-
-            output_pad->forward(top_blob_unbordered, top_blob, cmd, opt);
+            ncnn::Option opt_pad = opt;
+            opt_pad.blob_vkallocator = opt.workspace_vkallocator;
+            output_pad->forward(top_blob_bordered, top_blob_bordered_adj, cmd, opt_pad);
+            if (top_blob_bordered_adj.empty())
+                return -100;
         }
-        else
+
         {
             VkMat reference_blob;
             reference_blob.dims = 2;
-            reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-            reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
+            reference_blob.w = top_blob_bordered_adj.w - pad_left - pad_right;
+            reference_blob.h = top_blob_bordered_adj.h - pad_top - pad_bottom;
 
             std::vector<VkMat> crop_bottom_blobs(2);
-            crop_bottom_blobs[0] = top_blob_bordered;
+            crop_bottom_blobs[0] = top_blob_bordered_adj;
             crop_bottom_blobs[1] = reference_blob;
             std::vector<VkMat> crop_top_blobs(1);
             crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt);
@@ -573,7 +552,16 @@ int Deconvolution_vulkan::forward(const VkMat& bottom_blob, VkMat& top_blob, VkC
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            output_pad->forward(top_blob_bordered, top_blob, cmd, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;
diff --git a/src/layer/vulkan/deconvolutiondepthwise_vulkan.cpp b/src/layer/vulkan/deconvolutiondepthwise_vulkan.cpp
index 852859b6a..494353838 100644
--- a/src/layer/vulkan/deconvolutiondepthwise_vulkan.cpp
+++ b/src/layer/vulkan/deconvolutiondepthwise_vulkan.cpp
@@ -542,11 +542,7 @@ int DeconvolutionDepthWise_vulkan::forward(const VkMat& bottom_blob, VkMat& top_
     }
 
     VkMat top_blob_bordered;
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.blob_vkallocator, opt.staging_vkallocator);
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0 || output_pad_right > 0 || output_pad_bottom > 0 || (output_w > 0 && output_h > 0))
     {
         top_blob_bordered.create(outw, outh, num_output / out_elempack, out_elemsize, out_elempack, opt.workspace_vkallocator, opt.staging_vkallocator);
     }
@@ -583,43 +579,26 @@ int DeconvolutionDepthWise_vulkan::forward(const VkMat& bottom_blob, VkMat& top_
         // record
         cmd.record_pipeline(pipeline, bindings, constants, top_blob_bordered);
 
-        if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-        {
-            top_blob = top_blob_bordered;
-        }
-        else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+        if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
         {
+            VkMat top_blob_bordered_adj = top_blob_bordered;
             if (output_pad_right > 0 || output_pad_bottom > 0)
             {
-                VkMat top_blob_unbordered;
-                {
-                    ncnn::Option opt_ub = opt;
-                    opt_ub.blob_vkallocator = opt.workspace_vkallocator;
-
-                    VkMat reference_blob;
-                    reference_blob.dims = 2;
-                    reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-                    reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
-
-                    std::vector<VkMat> crop_bottom_blobs(2);
-                    crop_bottom_blobs[0] = top_blob_bordered;
-                    crop_bottom_blobs[1] = reference_blob;
-                    std::vector<VkMat> crop_top_blobs(1);
-                    crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt_ub);
-                    top_blob_unbordered = crop_top_blobs[0];
-                }
-
-                output_pad->forward(top_blob_unbordered, top_blob, cmd, opt);
+                ncnn::Option opt_pad = opt;
+                opt_pad.blob_vkallocator = opt.workspace_vkallocator;
+                output_pad->forward(top_blob_bordered, top_blob_bordered_adj, cmd, opt_pad);
+                if (top_blob_bordered_adj.empty())
+                    return -100;
             }
-            else
+
             {
                 VkMat reference_blob;
                 reference_blob.dims = 2;
-                reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-                reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
+                reference_blob.w = top_blob_bordered_adj.w - pad_left - pad_right;
+                reference_blob.h = top_blob_bordered_adj.h - pad_top - pad_bottom;
 
                 std::vector<VkMat> crop_bottom_blobs(2);
-                crop_bottom_blobs[0] = top_blob_bordered;
+                crop_bottom_blobs[0] = top_blob_bordered_adj;
                 crop_bottom_blobs[1] = reference_blob;
                 std::vector<VkMat> crop_top_blobs(1);
                 crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt);
@@ -686,7 +665,16 @@ int DeconvolutionDepthWise_vulkan::forward(const VkMat& bottom_blob, VkMat& top_
         }
         else
         {
-            top_blob = top_blob_bordered;
+            if (output_pad_right > 0 || output_pad_bottom > 0)
+            {
+                output_pad->forward(top_blob_bordered, top_blob, cmd, opt);
+                if (top_blob.empty())
+                    return -100;
+            }
+            else
+            {
+                top_blob = top_blob_bordered;
+            }
         }
 
         return 0;
@@ -779,43 +767,26 @@ int DeconvolutionDepthWise_vulkan::forward(const VkMat& bottom_blob, VkMat& top_
         top_blob_bordered = top_blob_unpacked;
     }
 
-    if (output_w == outw && output_h == outh && output_pad_right == 0 && output_pad_bottom == 0)
-    {
-        top_blob = top_blob_bordered;
-    }
-    else if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
+    if (pad_left > 0 || pad_right > 0 || pad_top > 0 || pad_bottom > 0)
     {
+        VkMat top_blob_bordered_adj = top_blob_bordered;
         if (output_pad_right > 0 || output_pad_bottom > 0)
         {
-            VkMat top_blob_unbordered;
-            {
-                ncnn::Option opt_ub = opt;
-                opt_ub.blob_vkallocator = opt.workspace_vkallocator;
-
-                VkMat reference_blob;
-                reference_blob.dims = 2;
-                reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-                reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
-
-                std::vector<VkMat> crop_bottom_blobs(2);
-                crop_bottom_blobs[0] = top_blob_bordered;
-                crop_bottom_blobs[1] = reference_blob;
-                std::vector<VkMat> crop_top_blobs(1);
-                crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt_ub);
-                top_blob_unbordered = crop_top_blobs[0];
-            }
-
-            output_pad->forward(top_blob_unbordered, top_blob, cmd, opt);
+            ncnn::Option opt_pad = opt;
+            opt_pad.blob_vkallocator = opt.workspace_vkallocator;
+            output_pad->forward(top_blob_bordered, top_blob_bordered_adj, cmd, opt_pad);
+            if (top_blob_bordered_adj.empty())
+                return -100;
         }
-        else
+
         {
             VkMat reference_blob;
             reference_blob.dims = 2;
-            reference_blob.w = top_blob_bordered.w - pad_left - pad_right;
-            reference_blob.h = top_blob_bordered.h - pad_top - pad_bottom;
+            reference_blob.w = top_blob_bordered_adj.w - pad_left - pad_right;
+            reference_blob.h = top_blob_bordered_adj.h - pad_top - pad_bottom;
 
             std::vector<VkMat> crop_bottom_blobs(2);
-            crop_bottom_blobs[0] = top_blob_bordered;
+            crop_bottom_blobs[0] = top_blob_bordered_adj;
             crop_bottom_blobs[1] = reference_blob;
             std::vector<VkMat> crop_top_blobs(1);
             crop->forward(crop_bottom_blobs, crop_top_blobs, cmd, opt);
@@ -882,7 +853,16 @@ int DeconvolutionDepthWise_vulkan::forward(const VkMat& bottom_blob, VkMat& top_
     }
     else
     {
-        top_blob = top_blob_bordered;
+        if (output_pad_right > 0 || output_pad_bottom > 0)
+        {
+            output_pad->forward(top_blob_bordered, top_blob, cmd, opt);
+            if (top_blob.empty())
+                return -100;
+        }
+        else
+        {
+            top_blob = top_blob_bordered;
+        }
     }
 
     return 0;