diff --git a/example/Vulkan/second_triangle.cpp b/example/Vulkan/second_triangle.cpp
index d4283410..88e3f156 100644
--- a/example/Vulkan/second_triangle.cpp
+++ b/example/Vulkan/second_triangle.cpp
@@ -15,11 +15,11 @@ constexpr uint32_t SCREEN_HEIGHT=720;
 
 constexpr uint32_t VERTEX_COUNT=3;
 
-constexpr float position_data[VERTEX_COUNT][2]=
+static float position_data[VERTEX_COUNT][2]=
 {
-    {SCREEN_WIDTH*0.5,   SCREEN_HEIGHT*0.25},
-    {SCREEN_WIDTH*0.75,  SCREEN_HEIGHT*0.75},
-    {SCREEN_WIDTH*0.25,  SCREEN_HEIGHT*0.75}
+    {0.5,   0.25},
+    {0.75,  0.75},
+    {0.25,  0.75}
 };
 
 constexpr float color_data[VERTEX_COUNT][4]=
@@ -29,6 +29,8 @@ constexpr float color_data[VERTEX_COUNT][4]=
     {0,0,1,1}
 };
 
+#define USE_ZERO2ONE_COORD      //使用左上角0,0右下角1,1的坐标系
+
 class TestApp:public VulkanApplicationFramework
 {
 private:
@@ -41,8 +43,12 @@ private:
 private:
 
     bool InitMaterial()
-    {        
+    {
+#ifdef USE_ZERO2ONE_COORD
+        MaterialCreateInfo *mci=mtl::CreateVertexColor2D(CoordinateSystem2D::ZeroToOne);
+#else
         MaterialCreateInfo *mci=mtl::CreateVertexColor2D(CoordinateSystem2D::Ortho);
+#endif//USE_ZERO2ONE_COORD
 
         //material_instance=db->CreateMaterialInstance(OS_TEXT("res/material/VertexColor2D"));
 
@@ -66,6 +72,16 @@ private:
         Primitive *primitive=db->CreatePrimitive(VERTEX_COUNT);
         if(!primitive)return(false);
 
+#ifndef USE_ZERO2ONE_COORD      //使用ortho坐标系
+
+        for(uint i=0;i<VERTEX_COUNT;i++)
+        {
+            position_data[i][0]*=SCREEN_WIDTH;
+            position_data[i][1]*=SCREEN_HEIGHT;
+        }
+
+#endif//USE_ZERO2ONE_COORD
+
         if(!primitive->Set(VAN::Position,   db->CreateVBO(VF_V2F,VERTEX_COUNT,position_data  )))return(false);
         if(!primitive->Set(VAN::Color,      db->CreateVBO(VF_V4F,VERTEX_COUNT,color_data     )))return(false);
         
diff --git a/inc/hgl/graph/SceneInfo.h b/inc/hgl/graph/SceneInfo.h
index b23be4c2..bc644125 100644
--- a/inc/hgl/graph/SceneInfo.h
+++ b/inc/hgl/graph/SceneInfo.h
@@ -7,7 +7,7 @@ namespace hgl
 {
     namespace graph
     {
-        /** 
+        /**
          * MVP矩阵
          */
         struct MVPMatrix
diff --git a/src/SceneGraph/Vulkan/VKMaterialDescriptorManager.cpp b/src/SceneGraph/Vulkan/VKMaterialDescriptorManager.cpp
index d62cf0c6..5bf00746 100644
--- a/src/SceneGraph/Vulkan/VKMaterialDescriptorManager.cpp
+++ b/src/SceneGraph/Vulkan/VKMaterialDescriptorManager.cpp
@@ -78,7 +78,6 @@ MaterialDescriptorManager::MaterialDescriptorManager(const UTF8String &name,cons
         dsl_ci[i].pBindings=nullptr;
 
         sd_count+=sds_array[i].count;
-
     }
 
     if(sd_count<=0)
@@ -116,7 +115,7 @@ MaterialDescriptorManager::MaterialDescriptorManager(const UTF8String &name,cons
 
                 ++dsl_bind[i];
 
-                ++sp;                                
+                ++sp;
             }
         }
     }
@@ -141,4 +140,4 @@ const int MaterialDescriptorManager::GetBinding(const DescriptorSetType &set_typ
 
     return(binding_map[size_t(set_type)][size_t(desc_type)].Get(name,result)?result:-1);
 }
-VK_NAMESPACE_END
\ No newline at end of file
+VK_NAMESPACE_END
diff --git a/src/ShaderGen/2d/VertexColor2D.cpp b/src/ShaderGen/2d/VertexColor2D.cpp
index a52cb4d9..41866412 100644
--- a/src/ShaderGen/2d/VertexColor2D.cpp
+++ b/src/ShaderGen/2d/VertexColor2D.cpp
@@ -22,8 +22,6 @@ MaterialCreateInfo *CreateVertexColor2D(const CoordinateSystem2D &cs)
 
     if(cs==CoordinateSystem2D::Ortho)
     {
-//        mci->AddStruct(GlobalDescriptor::ViewportInfo);
-
         mci->AddUBO(VK_SHADER_STAGE_VERTEX_BIT,GlobalDescriptor::ViewportInfo);
 
         sfGetPosition="vec4 GetPosition(){return viewport.ortho_matrix*vec4(Position,0,1);}";