diff --git a/libraries/gpu/src/gpu/GLBackend.h b/libraries/gpu/src/gpu/GLBackend.h
index 05afb28bf1..6d7a5f2545 100644
--- a/libraries/gpu/src/gpu/GLBackend.h
+++ b/libraries/gpu/src/gpu/GLBackend.h
@@ -151,6 +151,15 @@ public:
     // very specific for now
     static void syncSampler(const Sampler& sampler, Texture::Type type, const GLTexture* object);
 
+    class GLInputFormat : public GPUObject {
+    public:
+        
+
+        GLInputFormat();
+        ~GLInputFormat();
+    };
+    GLInputFormat* syncGPUObject(const Stream::Format& inputFormat);
+
     class GLShader : public GPUObject {
     public:
         enum Version {
diff --git a/libraries/gpu/src/gpu/Stream.h b/libraries/gpu/src/gpu/Stream.h
index c8d9335bf7..950a713cf0 100644
--- a/libraries/gpu/src/gpu/Stream.h
+++ b/libraries/gpu/src/gpu/Stream.h
@@ -106,6 +106,7 @@ public:
 
         bool hasAttribute(Slot slot) const { return (_attributes.find(slot) != _attributes.end()); }
 
+        const GPUObjectPointer gpuObject{};
     protected:
         AttributeMap _attributes;
         ChannelMap _channels;