diff --git a/benchmark/benchncnn.cpp b/benchmark/benchncnn.cpp
index 34a24763c..d58a7e478 100644
--- a/benchmark/benchncnn.cpp
+++ b/benchmark/benchncnn.cpp
@@ -57,9 +57,6 @@ public:
         // load file
         int ret = 0;
 
-        Option opt;
-        opt.vulkan_compute = use_vulkan_compute;
-
         ModelBinFromEmpty mb;
         for (size_t i=0; i<layers.size(); i++)
         {
@@ -83,7 +80,7 @@ public:
         }
 
 #if NCNN_VULKAN
-        if (use_vulkan_compute)
+        if (opt.use_vulkan_compute)
         {
             upload_model();
 
@@ -100,12 +97,12 @@ public:
 static int g_warmup_loop_count = 3;
 static int g_loop_count = 4;
 
+static ncnn::Option g_default_option;
+
 static ncnn::UnlockedPoolAllocator g_blob_pool_allocator;
 static ncnn::PoolAllocator g_workspace_pool_allocator;
 
 #if NCNN_VULKAN
-static bool g_use_vulkan_compute = false;
-
 static ncnn::VulkanDevice* g_vkdev = 0;
 static ncnn::VkAllocator* g_blob_vkallocator = 0;
 static ncnn::VkAllocator* g_staging_vkallocator = 0;
@@ -115,11 +112,11 @@ void benchmark(const char* comment, const ncnn::Mat& in)
 {
     ncnn::BenchNet net;
 
+    net.opt = g_default_option;
+
 #if NCNN_VULKAN
-    if (g_use_vulkan_compute)
+    if (net.opt.use_vulkan_compute)
     {
-        net.use_vulkan_compute = g_use_vulkan_compute;
-
         net.set_vulkan_device(g_vkdev);
     }
 #endif // NCNN_VULKAN
@@ -134,7 +131,7 @@ void benchmark(const char* comment, const ncnn::Mat& in)
     g_workspace_pool_allocator.clear();
 
 #if NCNN_VULKAN
-    if (g_use_vulkan_compute)
+    if (net.opt.use_vulkan_compute)
     {
         g_blob_vkallocator->clear();
         g_staging_vkallocator->clear();
@@ -145,7 +142,7 @@ void benchmark(const char* comment, const ncnn::Mat& in)
 #ifdef _WIN32
     Sleep(10 * 1000);
 #else
-    sleep(10);
+//     sleep(10);
 #endif
 
     ncnn::Mat out;
@@ -210,14 +207,15 @@ int main(int argc, char** argv)
         gpu_device = atoi(argv[4]);
     }
 
+    bool use_vulkan_compute = gpu_device != -1;
+
     g_loop_count = loop_count;
 
     g_blob_pool_allocator.set_size_compare_ratio(0.0f);
     g_workspace_pool_allocator.set_size_compare_ratio(0.5f);
 
 #if NCNN_VULKAN
-    g_use_vulkan_compute = gpu_device != -1;
-    if (g_use_vulkan_compute)
+    if (use_vulkan_compute)
     {
         g_warmup_loop_count = 10;
 
@@ -228,20 +226,25 @@ int main(int argc, char** argv)
     }
 #endif // NCNN_VULKAN
 
-    ncnn::Option opt;
-    opt.lightmode = true;
-    opt.num_threads = num_threads;
-    opt.blob_allocator = &g_blob_pool_allocator;
-    opt.workspace_allocator = &g_workspace_pool_allocator;
-
+    // default option
+    g_default_option.lightmode = true;
+    g_default_option.num_threads = num_threads;
+    g_default_option.blob_allocator = &g_blob_pool_allocator;
+    g_default_option.workspace_allocator = &g_workspace_pool_allocator;
 #if NCNN_VULKAN
-    opt.vulkan_compute = g_use_vulkan_compute;
-    opt.blob_vkallocator = g_blob_vkallocator;
-    opt.workspace_vkallocator = g_blob_vkallocator;
-    opt.staging_vkallocator = g_staging_vkallocator;
+    g_default_option.blob_vkallocator = g_blob_vkallocator;
+    g_default_option.workspace_vkallocator = g_blob_vkallocator;
+    g_default_option.staging_vkallocator = g_staging_vkallocator;
 #endif // NCNN_VULKAN
-
-    ncnn::set_default_option(opt);
+    g_default_option.use_winograd_convolution = true;
+    g_default_option.use_sgemm_convolution = true;
+    g_default_option.use_int8_inference = true;
+    g_default_option.use_vulkan_compute = use_vulkan_compute;
+    g_default_option.use_fp16_packed = true;
+    g_default_option.use_fp16_storage = true;
+    g_default_option.use_fp16_arithmetic = true;
+    g_default_option.use_int8_storage = true;
+    g_default_option.use_int8_arithmetic = true;
 
     ncnn::set_cpu_powersave(powersave);
 
@@ -257,21 +260,21 @@ int main(int argc, char** argv)
     benchmark("squeezenet", ncnn::Mat(227, 227, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("squeezenet_int8", ncnn::Mat(227, 227, 3));
 
     benchmark("mobilenet", ncnn::Mat(224, 224, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("mobilenet_int8", ncnn::Mat(224, 224, 3));
 
     benchmark("mobilenet_v2", ncnn::Mat(224, 224, 3));
 
 // #if NCNN_VULKAN
-//     if (!g_use_vulkan_compute)
+//     if (!use_vulkan_compute)
 // #endif // NCNN_VULKAN
 //     benchmark("mobilenet_v2_int8", ncnn::Mat(224, 224, 3));
 
@@ -284,14 +287,14 @@ int main(int argc, char** argv)
     benchmark("googlenet", ncnn::Mat(224, 224, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("googlenet_int8", ncnn::Mat(224, 224, 3));
 
     benchmark("resnet18", ncnn::Mat(224, 224, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("resnet18_int8", ncnn::Mat(224, 224, 3));
 
@@ -300,28 +303,28 @@ int main(int argc, char** argv)
     benchmark("vgg16", ncnn::Mat(224, 224, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("vgg16_int8", ncnn::Mat(224, 224, 3));
 
     benchmark("resnet50", ncnn::Mat(224, 224, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("resnet50_int8", ncnn::Mat(224, 224, 3));
 
     benchmark("squeezenet_ssd", ncnn::Mat(300, 300, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("squeezenet_ssd_int8", ncnn::Mat(300, 300, 3));
 
     benchmark("mobilenet_ssd", ncnn::Mat(300, 300, 3));
 
 #if NCNN_VULKAN
-    if (!g_use_vulkan_compute)
+    if (!use_vulkan_compute)
 #endif // NCNN_VULKAN
     benchmark("mobilenet_ssd_int8", ncnn::Mat(300, 300, 3));
 
diff --git a/examples/fasterrcnn.cpp b/examples/fasterrcnn.cpp
index 6f8f72830..fcd78dff0 100644
--- a/examples/fasterrcnn.cpp
+++ b/examples/fasterrcnn.cpp
@@ -107,7 +107,7 @@ static int detect_fasterrcnn(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net fasterrcnn;
 
 #if NCNN_VULKAN
-    fasterrcnn.use_vulkan_compute = true;
+    fasterrcnn.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // original pretrained model from https://github.com/rbgirshick/py-faster-rcnn
diff --git a/examples/mobilenetssd.cpp b/examples/mobilenetssd.cpp
index 5689033f0..e1870cf64 100755
--- a/examples/mobilenetssd.cpp
+++ b/examples/mobilenetssd.cpp
@@ -36,7 +36,7 @@ static int detect_mobilenet(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net mobilenet;
 
 #if NCNN_VULKAN
-    mobilenet.use_vulkan_compute = true;
+    mobilenet.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // model is converted from https://github.com/chuanqi305/MobileNet-SSD
diff --git a/examples/mobilenetv2ssdlite.cpp b/examples/mobilenetv2ssdlite.cpp
index 998312da3..5cf0861f0 100755
--- a/examples/mobilenetv2ssdlite.cpp
+++ b/examples/mobilenetv2ssdlite.cpp
@@ -39,7 +39,7 @@ static int detect_mobilenetv2(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net mobilenetv2;
 
 #if NCNN_VULKAN
-    mobilenetv2.use_vulkan_compute = true;
+    mobilenetv2.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     mobilenetv2.register_custom_layer("Silence", Noop_layer_creator);
diff --git a/examples/peleenetssd_seg.cpp b/examples/peleenetssd_seg.cpp
index ca6e06564..d002b8eee 100644
--- a/examples/peleenetssd_seg.cpp
+++ b/examples/peleenetssd_seg.cpp
@@ -36,7 +36,7 @@ static int detect_peleenet(const cv::Mat& bgr, std::vector<Object>& objects,ncnn
     ncnn::Net peleenet;
 
 #if NCNN_VULKAN
-    peleenet.use_vulkan_compute = true;
+    peleenet.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // model is converted from https://github.com/eric612/MobileNet-YOLO
@@ -94,7 +94,8 @@ static void draw_objects(const cv::Mat& bgr, const std::vector<Object>& objects,
         "traffic light","traffic sign","train"};
 
     cv::Mat image = bgr.clone();
-    std::vector<int> color = {128,255,128,244,35,232};
+    const int color[] = {128,255,128,244,35,232};
+    const int color_count = sizeof(color) / sizeof(int);
     
     for (size_t i = 0; i < objects.size(); i++)
     {
@@ -147,7 +148,7 @@ static void draw_objects(const cv::Mat& bgr, const std::vector<Object>& objects,
             }
             if(index > -1) {
                 int color_index = (index)*3;
-                if(color_index<color.size()) {
+                if(color_index<color_count) {
                     int b = color[color_index];
                     int g = color[color_index+1];
                     int r = color[color_index+2];
diff --git a/examples/rfcn.cpp b/examples/rfcn.cpp
index 4233be0ec..df20903ca 100644
--- a/examples/rfcn.cpp
+++ b/examples/rfcn.cpp
@@ -121,7 +121,7 @@ static int detect_rfcn(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net rfcn;
 
 #if NCNN_VULKAN
-    rfcn.use_vulkan_compute = true;
+    rfcn.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // original pretrained model from https://github.com/YuwenXiong/py-R-FCN
diff --git a/examples/shufflenetv2.cpp b/examples/shufflenetv2.cpp
index f3df82305..29e6cd6cd 100644
--- a/examples/shufflenetv2.cpp
+++ b/examples/shufflenetv2.cpp
@@ -29,7 +29,7 @@ static int detect_shufflenetv2(const cv::Mat& bgr, std::vector<float>& cls_score
     ncnn::Net shufflenetv2;
 
 #if NCNN_VULKAN
-    shufflenetv2.use_vulkan_compute = true;
+    shufflenetv2.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // https://github.com/miaow1988/ShuffleNet_V2_pytorch_caffe
diff --git a/examples/squeezenet.cpp b/examples/squeezenet.cpp
index e33ae6f74..8e602cc66 100644
--- a/examples/squeezenet.cpp
+++ b/examples/squeezenet.cpp
@@ -29,7 +29,7 @@ static int detect_squeezenet(const cv::Mat& bgr, std::vector<float>& cls_scores)
     ncnn::Net squeezenet;
 
 #if NCNN_VULKAN
-    squeezenet.use_vulkan_compute = true;
+    squeezenet.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     squeezenet.load_param("squeezenet_v1.1.param");
diff --git a/examples/squeezenetssd.cpp b/examples/squeezenetssd.cpp
index c93e25252..40791d9b4 100755
--- a/examples/squeezenetssd.cpp
+++ b/examples/squeezenetssd.cpp
@@ -36,7 +36,7 @@ static int detect_squeezenet(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net squeezenet;
 
 #if NCNN_VULKAN
-    squeezenet.use_vulkan_compute = true;
+    squeezenet.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // original pretrained model from https://github.com/chuanqi305/SqueezeNet-SSD
diff --git a/examples/yolov2.cpp b/examples/yolov2.cpp
index 3967e5b65..cce7fe8a7 100644
--- a/examples/yolov2.cpp
+++ b/examples/yolov2.cpp
@@ -36,7 +36,7 @@ static int detect_yolov2(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net yolov2;
 
 #if NCNN_VULKAN
-    yolov2.use_vulkan_compute = true;
+    yolov2.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // original pretrained model from https://github.com/eric612/MobileNet-YOLO
diff --git a/examples/yolov3.cpp b/examples/yolov3.cpp
index 4c707f34c..92722b522 100644
--- a/examples/yolov3.cpp
+++ b/examples/yolov3.cpp
@@ -36,7 +36,7 @@ static int detect_yolov3(const cv::Mat& bgr, std::vector<Object>& objects)
     ncnn::Net yolov3;
 
 #if NCNN_VULKAN
-    yolov3.use_vulkan_compute = true;
+    yolov3.opt.use_vulkan_compute = true;
 #endif // NCNN_VULKAN
 
     // original pretrained model from https://github.com/eric612/MobileNet-YOLO
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c3dbea978..4fbea3504 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,6 +25,7 @@ set(ncnn_SRCS
     modelbin.cpp
     net.cpp
     opencv.cpp
+    option.cpp
     paramdict.cpp
     pipeline.cpp
     benchmark.cpp
@@ -87,8 +88,8 @@ macro(ncnn_add_layer class)
     if(WITH_LAYER_${name}_vulkan)
         set(layer_declaration "${layer_declaration}#include \"layer/vulkan/${name}_vulkan.h\"\n")
         set(layer_declaration_class "${layer_declaration_class}, virtual public ${class}_vulkan")
-        set(create_pipeline_content "${create_pipeline_content}        if (opt.vulkan_compute) { int ret = ${class}_vulkan::create_pipeline(opt); if (ret) return ret; }\n")
-        set(destroy_pipeline_content "        if (opt.vulkan_compute) { int ret = ${class}_vulkan::destroy_pipeline(opt); if (ret) return ret; }\n${destroy_pipeline_content}")
+        set(create_pipeline_content "${create_pipeline_content}        if (opt.use_vulkan_compute) { int ret = ${class}_vulkan::create_pipeline(opt); if (ret) return ret; }\n")
+        set(destroy_pipeline_content "        if (opt.use_vulkan_compute) { int ret = ${class}_vulkan::destroy_pipeline(opt); if (ret) return ret; }\n${destroy_pipeline_content}")
 
         file(GLOB_RECURSE SHADER_SRCS "layer/vulkan/shader/${name}.comp")
         file(GLOB_RECURSE SHADER_SUBSRCS "layer/vulkan/shader/${name}_*.comp")
@@ -297,6 +298,7 @@ if(NCNN_INSTALL_SDK)
     modelbin.h
     net.h
     opencv.h
+    option.h
     paramdict.h
     pipeline.h
     benchmark.h
diff --git a/src/gpu.cpp b/src/gpu.cpp
index d1c64aa8a..460ccb03c 100644
--- a/src/gpu.cpp
+++ b/src/gpu.cpp
@@ -645,7 +645,7 @@ int create_gpu_instance()
         }
 
         // check features
-        gpu_info.support_fp16_packed = false;// TODO
+        gpu_info.support_fp16_packed = true;
         gpu_info.support_fp16_storage = false;
         gpu_info.support_fp16_arithmetic = false;
         gpu_info.support_int8_storage = false;
@@ -698,11 +698,11 @@ int create_gpu_instance()
             {
                 gpu_info.support_fp16_storage = query16BitStorageFeatures.storageBuffer16BitAccess && query16BitStorageFeatures.uniformAndStorageBuffer16BitAccess;
             }
-//             if (gpu_info.support_VK_KHR_shader_float16_int8)
-//             {
-//                 gpu_info.support_fp16_arithmetic = queryFloat16Int8Features.shaderFloat16;
-//                 gpu_info.support_int8_arithmetic = queryFloat16Int8Features.shaderInt8;
-//             }
+            if (gpu_info.support_VK_KHR_shader_float16_int8)
+            {
+                gpu_info.support_fp16_arithmetic = queryFloat16Int8Features.shaderFloat16;
+                gpu_info.support_int8_arithmetic = queryFloat16Int8Features.shaderInt8;
+            }
         }
         else
         {
diff --git a/src/layer.cpp b/src/layer.cpp
index d2acd8bd8..103a12c36 100644
--- a/src/layer.cpp
+++ b/src/layer.cpp
@@ -27,46 +27,6 @@
 
 namespace ncnn {
 
-Option::Option()
-{
-    lightmode = true;
-    num_threads = get_cpu_count();
-    blob_allocator = 0;
-    workspace_allocator = 0;
-
-    vulkan_compute = false;
-
-#if NCNN_VULKAN
-    blob_vkallocator = 0;
-    workspace_vkallocator = 0;
-    staging_vkallocator = 0;
-#endif // NCNN_VULKAN
-
-    use_winograd_convolution = 1;
-    use_sgemm_convolution = 1;
-    use_int8_inference = 1;
-}
-
-static Option g_default_option;
-
-const Option& get_default_option()
-{
-    return g_default_option;
-}
-
-int set_default_option(const Option& opt)
-{
-    if (opt.num_threads <= 0)
-    {
-        fprintf(stderr, "invalid option num_threads %d\n", opt.num_threads);
-        return -1;
-    }
-
-    g_default_option = opt;
-
-    return 0;
-}
-
 Layer::Layer()
 {
     one_blob_only = false;
diff --git a/src/layer.h b/src/layer.h
index 6e1408539..56f334249 100644
--- a/src/layer.h
+++ b/src/layer.h
@@ -19,10 +19,11 @@
 #include <string>
 #include <vector>
 #include <math.h>
+#include "platform.h"
 #include "mat.h"
 #include "modelbin.h"
+#include "option.h"
 #include "paramdict.h"
-#include "platform.h"
 
 #if NCNN_VULKAN
 #include <vulkan/vulkan.h>
@@ -32,57 +33,6 @@
 
 namespace ncnn {
 
-#if NCNN_VULKAN
-class VkAllocator;
-#endif // NCNN_VULKAN
-
-class Allocator;
-class Option
-{
-public:
-    // default option
-    Option();
-
-public:
-    // light mode
-    // intermediate blob will be recycled when enabled
-    // enabled by default
-    bool lightmode;
-
-    // thread count
-    // default value is the one returned by get_cpu_count()
-    int num_threads;
-
-    // blob memory allocator
-    Allocator* blob_allocator;
-
-    // workspace memory allocator
-    Allocator* workspace_allocator;
-
-    // enable vulkan compute
-    bool vulkan_compute;
-
-#if NCNN_VULKAN
-    // blob memory allocator
-    VkAllocator* blob_vkallocator;
-
-    // workspace memory allocator
-    VkAllocator* workspace_vkallocator;
-
-    // staging memory allocator
-    VkAllocator* staging_vkallocator;
-#endif // NCNN_VULKAN
-
-public:
-    int use_winograd_convolution;
-    int use_sgemm_convolution;
-    int use_int8_inference;
-};
-
-// the global default option
-const Option& get_default_option();
-int set_default_option(const Option& opt);
-
 class Layer
 {
 public:
@@ -100,10 +50,10 @@ public:
     virtual int load_model(const ModelBin& mb);
 
     //
-    virtual int create_pipeline(const Option& opt = get_default_option());
+    virtual int create_pipeline(const Option& opt = Option());
 
     //
-    virtual int destroy_pipeline(const Option& opt = get_default_option());
+    virtual int destroy_pipeline(const Option& opt = Option());
 
 public:
     // one input and one output blob
@@ -118,13 +68,13 @@ public:
 public:
     // implement inference
     // return 0 if success
-    virtual int forward(const std::vector<Mat>& bottom_blobs, std::vector<Mat>& top_blobs, const Option& opt = get_default_option()) const;
-    virtual int forward(const Mat& bottom_blob, Mat& top_blob, const Option& opt = get_default_option()) const;
+    virtual int forward(const std::vector<Mat>& bottom_blobs, std::vector<Mat>& top_blobs, const Option& opt = Option()) const;
+    virtual int forward(const Mat& bottom_blob, Mat& top_blob, const Option& opt = Option()) const;
 
     // implement inplace inference
     // return 0 if success
-    virtual int forward_inplace(std::vector<Mat>& bottom_top_blobs, const Option& opt = get_default_option()) const;
-    virtual int forward_inplace(Mat& bottom_top_blob, const Option& opt = get_default_option()) const;
+    virtual int forward_inplace(std::vector<Mat>& bottom_top_blobs, const Option& opt = Option()) const;
+    virtual int forward_inplace(Mat& bottom_top_blob, const Option& opt = Option()) const;
 
 #if NCNN_VULKAN
 public:
@@ -134,13 +84,13 @@ public:
 public:
     // implement inference
     // return 0 if success
-    virtual int forward(const std::vector<VkMat>& bottom_blobs, std::vector<VkMat>& top_blobs, VkCompute& cmd, const Option& opt = get_default_option()) const;
-    virtual int forward(const VkMat& bottom_blob, VkMat& top_blob, VkCompute& cmd, const Option& opt = get_default_option()) const;
+    virtual int forward(const std::vector<VkMat>& bottom_blobs, std::vector<VkMat>& top_blobs, VkCompute& cmd, const Option& opt = Option()) const;
+    virtual int forward(const VkMat& bottom_blob, VkMat& top_blob, VkCompute& cmd, const Option& opt = Option()) const;
 
     // implement inplace inference
     // return 0 if success
-    virtual int forward_inplace(std::vector<VkMat>& bottom_top_blobs, VkCompute& cmd, const Option& opt = get_default_option()) const;
-    virtual int forward_inplace(VkMat& bottom_top_blob, VkCompute& cmd, const Option& opt = get_default_option()) const;
+    virtual int forward_inplace(std::vector<VkMat>& bottom_top_blobs, VkCompute& cmd, const Option& opt = Option()) const;
+    virtual int forward_inplace(VkMat& bottom_top_blob, VkCompute& cmd, const Option& opt = Option()) const;
 
 public:
     // assigned immediately after creating this layer
diff --git a/src/layer/convolution.cpp b/src/layer/convolution.cpp
index cac836b9c..c01fd02c3 100644
--- a/src/layer/convolution.cpp
+++ b/src/layer/convolution.cpp
@@ -74,7 +74,7 @@ int Convolution::load_model(const ModelBin& mb)
 int Convolution::create_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     use_int8_inference = opt.use_int8_inference;
 
@@ -111,7 +111,7 @@ int Convolution::create_pipeline(const Option& opt)
 
             op->create_pipeline(opt_cpu);
 
-            ncnn::Option opt = ncnn::get_default_option();
+            ncnn::Option opt;
             opt.blob_allocator = int8_weight_data.allocator;
 
             const Mat weight_data_n = weight_data.range(weight_data_size_output * n, weight_data_size_output);
@@ -173,7 +173,7 @@ int Convolution::create_pipeline(const Option& opt)
 int Convolution::destroy_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (quantize)
     {
@@ -286,7 +286,7 @@ int Convolution::forward(const Mat& bottom_blob, Mat& top_blob, const Option& op
             op->load_model(ModelBinFromMatArray(weights));
 
             Option opt_cpu = opt;
-            opt_cpu.vulkan_compute = false;
+            opt_cpu.use_vulkan_compute = false;
             op->create_pipeline(opt_cpu);
 
             // forward
diff --git a/src/layer/convolutiondepthwise.cpp b/src/layer/convolutiondepthwise.cpp
index 6ec4daef0..a1405e9d1 100644
--- a/src/layer/convolutiondepthwise.cpp
+++ b/src/layer/convolutiondepthwise.cpp
@@ -98,7 +98,7 @@ int ConvolutionDepthWise::load_model(const ModelBin& mb)
 int ConvolutionDepthWise::create_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     use_int8_inference = opt.use_int8_inference;
 
@@ -134,7 +134,7 @@ int ConvolutionDepthWise::create_pipeline(const Option& opt)
 
             op->create_pipeline(opt_cpu);
 
-            ncnn::Option opt = ncnn::get_default_option();
+            ncnn::Option opt;
             opt.blob_allocator = int8_weight_data.allocator;
 
             const Mat weight_data_g = weight_data.range(weight_data_size_g * g, weight_data_size_g);
@@ -198,7 +198,7 @@ int ConvolutionDepthWise::create_pipeline(const Option& opt)
 int ConvolutionDepthWise::destroy_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     for (int i=0; i<(int)quantize_ops.size(); i++)
     {
diff --git a/src/layer/innerproduct.cpp b/src/layer/innerproduct.cpp
index 979903d6d..200d120ad 100644
--- a/src/layer/innerproduct.cpp
+++ b/src/layer/innerproduct.cpp
@@ -65,7 +65,7 @@ int InnerProduct::load_model(const ModelBin& mb)
 int InnerProduct::create_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     use_int8_inference = opt.use_int8_inference;
 
@@ -143,7 +143,7 @@ int InnerProduct::create_pipeline(const Option& opt)
 
             op->create_pipeline(opt_cpu);
 
-            ncnn::Option opt = ncnn::get_default_option();
+            ncnn::Option opt;
             opt.blob_allocator = int8_weight_data.allocator;
 
             const Mat weight_data_n = weight_data.range(weight_data_size_output * n, weight_data_size_output);
@@ -162,7 +162,7 @@ int InnerProduct::create_pipeline(const Option& opt)
 int InnerProduct::destroy_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (quantize)
     {
diff --git a/src/layer/x86/convolution_x86.cpp b/src/layer/x86/convolution_x86.cpp
index 80ffa919a..1375eecc4 100644
--- a/src/layer/x86/convolution_x86.cpp
+++ b/src/layer/x86/convolution_x86.cpp
@@ -45,7 +45,7 @@ Convolution_x86::Convolution_x86()
 int Convolution_x86::create_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (activation_type == 1)
     {
@@ -120,7 +120,7 @@ int Convolution_x86::create_pipeline(const Option& opt)
 int Convolution_x86::destroy_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (activation)
     {
diff --git a/src/layer/x86/convolutiondepthwise_x86.cpp b/src/layer/x86/convolutiondepthwise_x86.cpp
index 0adaad109..8011ad654 100644
--- a/src/layer/x86/convolutiondepthwise_x86.cpp
+++ b/src/layer/x86/convolutiondepthwise_x86.cpp
@@ -36,7 +36,7 @@ ConvolutionDepthWise_x86::ConvolutionDepthWise_x86()
 int ConvolutionDepthWise_x86::create_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (activation_type == 1)
     {
@@ -167,7 +167,7 @@ int ConvolutionDepthWise_x86::create_pipeline(const Option& opt)
 int ConvolutionDepthWise_x86::destroy_pipeline(const Option& opt)
 {
     Option opt_cpu = opt;
-    opt_cpu.vulkan_compute = false;
+    opt_cpu.use_vulkan_compute = false;
 
     if (activation)
     {
diff --git a/src/layer/yolodetectionoutput.cpp b/src/layer/yolodetectionoutput.cpp
index 7e74cf4e1..244a4bb27 100644
--- a/src/layer/yolodetectionoutput.cpp
+++ b/src/layer/yolodetectionoutput.cpp
@@ -49,7 +49,7 @@ int YoloDetectionOutput::create_pipeline(const Option& opt)
         softmax->load_param(pd);
 
         Option opt_cpu = opt;
-        opt_cpu.vulkan_compute = false;
+        opt_cpu.use_vulkan_compute = false;
         softmax->create_pipeline(opt_cpu);
     }
 
@@ -61,7 +61,7 @@ int YoloDetectionOutput::destroy_pipeline(const Option& opt)
     if (softmax)
     {
         Option opt_cpu = opt;
-        opt_cpu.vulkan_compute = false;
+        opt_cpu.use_vulkan_compute = false;
         softmax->destroy_pipeline(opt_cpu);
         delete softmax;
         softmax = 0;
diff --git a/src/mat.cpp b/src/mat.cpp
index 84b645870..2e7886b76 100644
--- a/src/mat.cpp
+++ b/src/mat.cpp
@@ -95,7 +95,7 @@ void Mat::substract_mean_normalize(const float* mean_vals, const float* norm_val
         return;
     }
 
-    op->forward_inplace(*this, ncnn::get_default_option());
+    op->forward_inplace(*this);
 
     delete op;
 }
@@ -234,7 +234,7 @@ void copy_make_border(const Mat& src, Mat& dst, int top, int bottom, int left, i
 
     padding->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -257,7 +257,7 @@ void copy_cut_border(const Mat& src, Mat& dst, int top, int bottom, int left, in
 
     crop->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -277,7 +277,7 @@ void resize_bilinear(const Mat& src, Mat& dst, int w, int h, Allocator* allocato
 
     interp->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -297,7 +297,7 @@ void resize_bicubic(const Mat& src, Mat& dst, int w, int h, Allocator* allocator
 
     interp->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -315,7 +315,7 @@ void convert_packing(const Mat& src, Mat& dst, int _packing, Allocator* allocato
 
     packing->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -334,7 +334,7 @@ void cast_float32_to_float16(const Mat& src, Mat& dst, Allocator* allocator, int
 
     cast->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
@@ -353,7 +353,7 @@ void cast_float16_to_float32(const Mat& src, Mat& dst, Allocator* allocator, int
 
     cast->load_param(pd);
 
-    ncnn::Option opt = ncnn::get_default_option();
+    ncnn::Option opt;
     opt.num_threads = num_threads;
     opt.blob_allocator = allocator;
 
diff --git a/src/net.cpp b/src/net.cpp
index 18c25ddd1..4c6237ffd 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -40,11 +40,6 @@ namespace ncnn {
 
 Net::Net()
 {
-    use_winograd_convolution = 1;
-    use_sgemm_convolution = 1;
-    use_int8_inference = 1;
-    use_vulkan_compute = 0;
-
 #if NCNN_VULKAN
     vkdev = 0;
     weight_vkallocator = 0;
@@ -155,11 +150,8 @@ int Net::load_param(FILE* fp)
     blobs.resize((size_t)blob_count);
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute && !vkdev)
-    {
-        // use default vulkan device
+    if (opt.use_vulkan_compute && !vkdev)
         vkdev = get_default_gpu_device();
-    }
 #endif // NCNN_VULKAN
 
     ParamDict pd;
@@ -192,7 +184,7 @@ int Net::load_param(FILE* fp)
         }
 
 #if NCNN_VULKAN
-        if (use_vulkan_compute)
+        if (opt.use_vulkan_compute)
             layer->vkdev = vkdev;
 #endif // NCNN_VULKAN
 
@@ -320,11 +312,8 @@ int Net::load_param_mem(const char* _mem)
     blobs.resize(blob_count);
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute && !vkdev)
-    {
-        // use default vulkan device
+    if (opt.use_vulkan_compute && !vkdev)
         vkdev = get_default_gpu_device();
-    }
 #endif // NCNN_VULKAN
 
     ParamDict pd;
@@ -357,7 +346,7 @@ int Net::load_param_mem(const char* _mem)
         }
 
 #if NCNN_VULKAN
-        if (use_vulkan_compute)
+        if (opt.use_vulkan_compute)
             layer->vkdev = vkdev;
 #endif // NCNN_VULKAN
 
@@ -489,11 +478,8 @@ int Net::load_param_bin(FILE* fp)
     blobs.resize(blob_count);
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute && !vkdev)
-    {
-        // use default vulkan device
+    if (opt.use_vulkan_compute && !vkdev)
         vkdev = get_default_gpu_device();
-    }
 #endif // NCNN_VULKAN
 
     ParamDict pd;
@@ -526,7 +512,7 @@ int Net::load_param_bin(FILE* fp)
         }
 
 #if NCNN_VULKAN
-        if (use_vulkan_compute)
+        if (opt.use_vulkan_compute)
             layer->vkdev = vkdev;
 #endif // NCNN_VULKAN
 
@@ -613,12 +599,6 @@ int Net::load_model(FILE* fp)
     // load file
     int ret = 0;
 
-    Option opt;
-    opt.vulkan_compute = use_vulkan_compute;
-    opt.use_winograd_convolution = use_winograd_convolution;
-    opt.use_sgemm_convolution = use_sgemm_convolution;
-    opt.use_int8_inference = use_int8_inference;
-
     ModelBinFromStdio mb(fp);
     for (size_t i=0; i<layers.size(); i++)
     {
@@ -649,7 +629,7 @@ int Net::load_model(FILE* fp)
     }
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute)
+    if (opt.use_vulkan_compute)
     {
         create_pipeline();
 
@@ -709,11 +689,8 @@ int Net::load_param(const unsigned char* _mem)
     blobs.resize(blob_count);
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute && !vkdev)
-    {
-        // use default vulkan device
+    if (opt.use_vulkan_compute && !vkdev)
         vkdev = get_default_gpu_device();
-    }
 #endif // NCNN_VULKAN
 
     ParamDict pd;
@@ -743,7 +720,7 @@ int Net::load_param(const unsigned char* _mem)
         }
 
 #if NCNN_VULKAN
-        if (use_vulkan_compute)
+        if (opt.use_vulkan_compute)
             layer->vkdev = vkdev;
 #endif // NCNN_VULKAN
 
@@ -816,12 +793,6 @@ int Net::load_model(const unsigned char* _mem)
         return -1;
     }
 
-    Option opt;
-    opt.vulkan_compute = use_vulkan_compute;
-    opt.use_winograd_convolution = use_winograd_convolution;
-    opt.use_sgemm_convolution = use_sgemm_convolution;
-    opt.use_int8_inference = use_int8_inference;
-
     const unsigned char* mem = _mem;
     ModelBinFromMemory mb(mem);
     for (size_t i=0; i<layers.size(); i++)
@@ -850,7 +821,7 @@ int Net::load_model(const unsigned char* _mem)
     }
 
 #if NCNN_VULKAN
-    if (use_vulkan_compute)
+    if (opt.use_vulkan_compute)
     {
         create_pipeline();
 
@@ -971,12 +942,6 @@ void Net::clear()
     destroy_pipeline();
 #endif // NCNN_VULKAN
 
-    Option opt;
-    opt.vulkan_compute = use_vulkan_compute;
-    opt.use_winograd_convolution = use_winograd_convolution;
-    opt.use_sgemm_convolution = use_sgemm_convolution;
-    opt.use_int8_inference = use_int8_inference;
-
     blobs.clear();
     for (size_t i=0; i<layers.size(); i++)
     {
@@ -1053,12 +1018,6 @@ int Net::upload_model()
 
 int Net::create_pipeline()
 {
-    Option opt;
-    opt.vulkan_compute = use_vulkan_compute;
-    opt.use_winograd_convolution = use_winograd_convolution;
-    opt.use_sgemm_convolution = use_sgemm_convolution;
-    opt.use_int8_inference = use_int8_inference;
-
     if (vkdev->info.support_fp16_packed || vkdev->info.support_fp16_storage)
     {
         {
@@ -1117,12 +1076,6 @@ int Net::create_pipeline()
 
 int Net::destroy_pipeline()
 {
-    Option opt;
-    opt.vulkan_compute = use_vulkan_compute;
-    opt.use_winograd_convolution = use_winograd_convolution;
-    opt.use_sgemm_convolution = use_sgemm_convolution;
-    opt.use_int8_inference = use_int8_inference;
-
     if (cast_float32_to_float16)
         cast_float32_to_float16->destroy_pipeline(opt);
 
@@ -1887,19 +1840,20 @@ int Net::forward_layer(int layer_index, std::vector<Mat>& blob_mats, std::vector
 Extractor::Extractor(const Net* _net, int blob_count) : net(_net)
 {
     blob_mats.resize(blob_count);
-    opt = get_default_option();
+    opt = net->opt;
 
 #if NCNN_VULKAN
-    opt.vulkan_compute = net->use_vulkan_compute;
-
-    if (net->use_vulkan_compute)
+    if (net->opt.use_vulkan_compute)
     {
-        blob_mats_gpu.resize(blob_count);
-
         // set default vulkan blob/workspace/staging allocator
-        opt.blob_vkallocator = net->vkdev->allocator();
-        opt.workspace_vkallocator = net->vkdev->allocator();
-        opt.staging_vkallocator = net->vkdev->staging_allocator();
+        if (!opt.blob_vkallocator)
+            opt.blob_vkallocator = net->vkdev->allocator();
+        if (!opt.workspace_vkallocator)
+            opt.workspace_vkallocator = net->vkdev->allocator();
+        if (!opt.staging_vkallocator)
+            opt.staging_vkallocator = net->vkdev->staging_allocator();
+
+        blob_mats_gpu.resize(blob_count);
     }
 #endif // NCNN_VULKAN
 }
@@ -1927,9 +1881,9 @@ void Extractor::set_workspace_allocator(Allocator* allocator)
 #if NCNN_VULKAN
 void Extractor::set_vulkan_compute(bool enable)
 {
-    if (net->use_vulkan_compute)
+    if (net->opt.use_vulkan_compute)
     {
-        opt.vulkan_compute = enable;
+        opt.use_vulkan_compute = enable;
     }
     else
     {
@@ -1995,7 +1949,7 @@ int Extractor::extract(int blob_index, Mat& feat)
         int layer_index = net->blobs[blob_index].producer;
 
 #if NCNN_VULKAN
-        if (opt.vulkan_compute)
+        if (opt.use_vulkan_compute)
         {
             ncnn::VkCompute cmd(net->vkdev);
 #if NCNN_BENCHMARK
diff --git a/src/net.h b/src/net.h
index 8b9278833..5d5df01fc 100644
--- a/src/net.h
+++ b/src/net.h
@@ -17,10 +17,11 @@
 
 #include <stdio.h>
 #include <vector>
+#include "platform.h"
 #include "blob.h"
 #include "layer.h"
 #include "mat.h"
-#include "platform.h"
+#include "option.h"
 
 namespace ncnn {
 
@@ -36,6 +37,16 @@ public:
     // clear and destroy
     ~Net();
 
+public:
+    // option
+    Option opt;
+
+#if NCNN_VULKAN
+
+    void set_vulkan_device(const VulkanDevice* vkdev);
+
+#endif // NCNN_VULKAN
+
 #if NCNN_STRING
     // register custom layer by layer type name
     // return 0 if success
@@ -82,34 +93,6 @@ public:
     // construct an Extractor from network
     Extractor create_extractor() const;
 
-public:
-    // enable winograd convolution optimization
-    // improve convolution 3x3 stride1 performace, may consume more memory
-    // changes should be applied before loading network structure and weight
-    // enabled by default
-    int use_winograd_convolution;
-
-    // enable sgemm convolution optimization
-    // improve convolution 1x1 stride1 performace, may consume more memory
-    // changes should be applied before loading network structure and weight
-    // enabled by default
-    int use_sgemm_convolution;
-
-    // enable quantized int8 inference
-    // use low-precision int8 path for quantized model
-    // changes should be applied before loading network structure and weight
-    // enabled by default
-    int use_int8_inference;
-
-    // enable vulkan compute
-    int use_vulkan_compute;
-
-#if NCNN_VULKAN
-
-    void set_vulkan_device(const VulkanDevice* vkdev);
-
-#endif // NCNN_VULKAN
-
 protected:
     // parse the structure of network
     // fuse int8 op dequantize and quantize by requantize
diff --git a/src/option.cpp b/src/option.cpp
new file mode 100644
index 000000000..249306b30
--- /dev/null
+++ b/src/option.cpp
@@ -0,0 +1,49 @@
+// Tencent is pleased to support the open source community by making ncnn available.
+//
+// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+//
+// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
+// in compliance with the License. You may obtain a copy of the License at
+//
+// https://opensource.org/licenses/BSD-3-Clause
+//
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+
+#include "option.h"
+#include "cpu.h"
+
+namespace ncnn {
+
+Option::Option()
+{
+    lightmode = true;
+    num_threads = get_cpu_count();
+    blob_allocator = 0;
+    workspace_allocator = 0;
+
+#if NCNN_VULKAN
+    blob_vkallocator = 0;
+    workspace_vkallocator = 0;
+    staging_vkallocator = 0;
+#endif // NCNN_VULKAN
+
+    use_winograd_convolution = true;
+    use_sgemm_convolution = true;
+    use_int8_inference = true;
+    use_vulkan_compute = false;// TODO enable me
+
+    use_fp16_packed = false;// TODO enable me
+    use_fp16_storage = true;
+    use_fp16_arithmetic = false;
+    use_int8_storage = true;
+    use_int8_arithmetic = false;
+
+    // sanitize
+    if (num_threads <= 0)
+        num_threads = 1;
+}
+
+} // namespace ncnn
diff --git a/src/option.h b/src/option.h
new file mode 100644
index 000000000..54c7e57af
--- /dev/null
+++ b/src/option.h
@@ -0,0 +1,91 @@
+// Tencent is pleased to support the open source community by making ncnn available.
+//
+// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+//
+// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
+// in compliance with the License. You may obtain a copy of the License at
+//
+// https://opensource.org/licenses/BSD-3-Clause
+//
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+
+#ifndef NCNN_OPTION_H
+#define NCNN_OPTION_H
+
+#include "platform.h"
+
+namespace ncnn {
+
+#if NCNN_VULKAN
+class VkAllocator;
+#endif // NCNN_VULKAN
+
+class Allocator;
+class Option
+{
+public:
+    // default option
+    Option();
+
+public:
+    // light mode
+    // intermediate blob will be recycled when enabled
+    // enabled by default
+    bool lightmode;
+
+    // thread count
+    // default value is the one returned by get_cpu_count()
+    int num_threads;
+
+    // blob memory allocator
+    Allocator* blob_allocator;
+
+    // workspace memory allocator
+    Allocator* workspace_allocator;
+
+#if NCNN_VULKAN
+    // blob memory allocator
+    VkAllocator* blob_vkallocator;
+
+    // workspace memory allocator
+    VkAllocator* workspace_vkallocator;
+
+    // staging memory allocator
+    VkAllocator* staging_vkallocator;
+#endif // NCNN_VULKAN
+
+    // enable winograd convolution optimization
+    // improve convolution 3x3 stride1 performace, may consume more memory
+    // changes should be applied before loading network structure and weight
+    // enabled by default
+    bool use_winograd_convolution;
+
+    // enable sgemm convolution optimization
+    // improve convolution 1x1 stride1 performace, may consume more memory
+    // changes should be applied before loading network structure and weight
+    // enabled by default
+    bool use_sgemm_convolution;
+
+    // enable quantized int8 inference
+    // use low-precision int8 path for quantized model
+    // changes should be applied before loading network structure and weight
+    // enabled by default
+    bool use_int8_inference;
+
+    // enable vulkan compute
+    bool use_vulkan_compute;
+
+    // enable options for gpu inference
+    bool use_fp16_packed;
+    bool use_fp16_storage;
+    bool use_fp16_arithmetic;
+    bool use_int8_storage;
+    bool use_int8_arithmetic;
+};
+
+} // namespace ncnn
+
+#endif // NCNN_OPTION_H
diff --git a/src/pipeline.cpp b/src/pipeline.cpp
index fe2ec5c41..9ec7e0431 100644
--- a/src/pipeline.cpp
+++ b/src/pipeline.cpp
@@ -47,18 +47,7 @@ int Pipeline::create(const uint32_t* spv_data, size_t spv_data_size, const char*
 
 //     fprintf(stderr, "local_shader_module %p %s created\n", local_shader_module, entry_name);
 
-    create_descriptorset_layout(binding_count);
-
-    create_pipeline_layout(push_constant_count);
-
-    create_pipeline(local_shader_module, entry_name, specializations);
-
-    if (vkdev->info.support_VK_KHR_descriptor_update_template)
-    {
-        create_descriptor_update_template(binding_count);
-    }
-
-    return 0;
+    return create(local_shader_module, entry_name, specializations, binding_count, push_constant_count);
 }
 
 int Pipeline::create(VkShaderModule shader_module, const char* entry_name, const std::vector<vk_specialization_type>& specializations, int binding_count, int push_constant_count)