diff --git a/src/ShaderGen/2d/Std2DMaterialLoader.cpp b/src/ShaderGen/2d/Std2DMaterialLoader.cpp
index 53e5b157..c147aa84 100644
--- a/src/ShaderGen/2d/Std2DMaterialLoader.cpp
+++ b/src/ShaderGen/2d/Std2DMaterialLoader.cpp
@@ -73,12 +73,12 @@ namespace
 
         bool CustomVertexShader(ShaderCreateInfoVertex *vsc) override
         {
-            if(!Std2DMaterial::CustomVertexShader(vsc))
-                return(false);
-
             for(auto &ua:mfd->vi)
                 vsc->AddInput(ua.vat,ua.name);
 
+            if(!Std2DMaterial::CustomVertexShader(vsc))
+                return(false);
+
             return CommonProc(VK_SHADER_STAGE_VERTEX_BIT,vsc);
         }
 
diff --git a/src/ShaderGen/3d/Std3DMaterialLoader.cpp b/src/ShaderGen/3d/Std3DMaterialLoader.cpp
index 0d68e25a..f08a814b 100644
--- a/src/ShaderGen/3d/Std3DMaterialLoader.cpp
+++ b/src/ShaderGen/3d/Std3DMaterialLoader.cpp
@@ -73,12 +73,12 @@ public:
 
     bool CustomVertexShader(ShaderCreateInfoVertex* vsc) override
     {
-        if (!Std3DMaterial::CustomVertexShader(vsc))
-            return (false);
-
         for (auto& ua : mfd->vi)
             vsc->AddInput(ua.vat, ua.name);
 
+        if (!Std3DMaterial::CustomVertexShader(vsc))
+            return (false);
+
         return CommonProc(VK_SHADER_STAGE_VERTEX_BIT, vsc);
     }