diff --git a/include/PSX/GPU/Primitives/primitive_poly_types.hpp b/include/PSX/GPU/Primitives/primitive_poly_types.hpp
index 945a9c2b..8c155fbd 100644
--- a/include/PSX/GPU/Primitives/primitive_poly_types.hpp
+++ b/include/PSX/GPU/Primitives/primitive_poly_types.hpp
@@ -32,6 +32,35 @@ namespace JabyEngine {
                     return *static_cast<T*>(this);
                 }
             };
+
+            template<typename T>
+            struct Poly3Interface {};
+
+            template<typename T>
+            struct Poly4Interface {
+                constexpr T& set_rect_size(const SizeI16& size) {
+                    static_cast<T*>(this)->vertex1 = static_cast<const T*>(this)->vertex0.add(size.width, 0);
+                    static_cast<T*>(this)->vertex2 = static_cast<const T*>(this)->vertex0.add(0,          size.height);
+                    static_cast<T*>(this)->vertex3 = static_cast<const T*>(this)->vertex0.add(size.width, size.height);
+
+                    return *static_cast<T*>(this);
+                }
+
+                constexpr T& set_rect_size_fast(const SizeI16& size) {
+                    static_cast<T*>(this)->vertex1.x = static_cast<const T*>(this)->vertex0.x + size.width;
+                    static_cast<T*>(this)->vertex2.y = static_cast<const T*>(this)->vertex0.y + size.height;
+                    static_cast<T*>(this)->vertex3   = static_cast<const T*>(this)->vertex0.add(size.width, size.height);
+                    
+                    return *static_cast<T*>(this);
+                }
+
+                constexpr SizeI16 get_rect_size() const {
+                    return SizeI16::create(
+                        static_cast<const T*>(this)->vertex1.x - static_cast<const T*>(this)->vertex0.x,
+                        static_cast<const T*>(this)->vertex2.y - static_cast<const T*>(this)->vertex0.y
+                    );
+                }
+            };
         }
 
         /*
@@ -39,9 +68,9 @@ namespace JabyEngine {
            / \
           3 - 2
         */
-        struct POLY_F3 : public internal::RenderPrimitive<POLY_F3>, public internal::PolyCodeInterface<POLY_F3>, public internal::LinkedElementCreator<POLY_F3> {
+        struct POLY_F3 : public internal::RenderPrimitive<POLY_F3>, public internal::PolyCodeInterface<POLY_F3>, public internal::Poly3Interface<POLY_F3>, public internal::LinkedElementCreator<POLY_F3> {
             static constexpr auto IdentityCode = Code::create().set(Code::FlatShading).set(Code::TriVertics).set(Code::Untextured).set(Code::NonTransparent);
-            
+
             Color24 color;   // a
             Code    code;    // a
             Vertex  vertex0; // b
@@ -58,7 +87,7 @@ namespace JabyEngine {
             }
         };
 
-        struct POLY_FT3 : public internal::RenderPrimitive<POLY_FT3>, public internal::PolyCodeInterface<POLY_FT3>, public internal::LinkedElementCreator<POLY_FT3> {
+        struct POLY_FT3 : public internal::RenderPrimitive<POLY_FT3>, public internal::PolyCodeInterface<POLY_FT3>, public internal::Poly3Interface<POLY_FT3>, public internal::LinkedElementCreator<POLY_FT3> {
             struct VertexEx {
                 Vertex     position;
                 PageOffset tex_offset;
@@ -94,7 +123,7 @@ namespace JabyEngine {
             }
         };
 
-        struct POLY_G3 : public internal::RenderPrimitive<POLY_G3>, public internal::PolyCodeInterface<POLY_G3>, public internal::LinkedElementCreator<POLY_G3> {
+        struct POLY_G3 : public internal::RenderPrimitive<POLY_G3>, public internal::PolyCodeInterface<POLY_G3>, public internal::Poly3Interface<POLY_G3>, public internal::LinkedElementCreator<POLY_G3> {
             static constexpr auto IdentityCode = Code(POLY_F3::IdentityCode).set(Code::GouraudShading);
 
             Color24 color0;  // a
@@ -124,7 +153,7 @@ namespace JabyEngine {
             }
         };
 
-        struct POLY_GT3 : public internal::RenderPrimitive<POLY_GT3>, public internal::PolyCodeInterface<POLY_GT3>, public internal::LinkedElementCreator<POLY_GT3> {
+        struct POLY_GT3 : public internal::RenderPrimitive<POLY_GT3>, public internal::PolyCodeInterface<POLY_GT3>, public internal::Poly3Interface<POLY_GT3>, public internal::LinkedElementCreator<POLY_GT3> {
             struct VertexEx {
                 Vertex     position;
                 PageOffset tex_offset;
@@ -170,7 +199,7 @@ namespace JabyEngine {
         |   |
         3 - 4
         */
-        struct POLY_F4 : public internal::RenderPrimitive<POLY_F4>, public internal::PolyCodeInterface<POLY_F4>, public internal::LinkedElementCreator<POLY_F4> {
+        struct POLY_F4 : public internal::RenderPrimitive<POLY_F4>, public internal::PolyCodeInterface<POLY_F4>, public internal::Poly4Interface<POLY_F4>, public internal::LinkedElementCreator<POLY_F4> {
             static constexpr auto IdentityCode = Code(POLY_F3::IdentityCode).set(Code::QuadVertics);
 
             Color24 color;   // a
@@ -200,7 +229,7 @@ namespace JabyEngine {
             }
         };
 
-        struct POLY_FT4 : public internal::RenderPrimitive<POLY_FT4>, public internal::PolyCodeInterface<POLY_FT4>, public internal::LinkedElementCreator<POLY_FT4> {
+        struct POLY_FT4 : public internal::RenderPrimitive<POLY_FT4>, public internal::PolyCodeInterface<POLY_FT4>, public internal::Poly4Interface<POLY_FT4>, public internal::LinkedElementCreator<POLY_FT4> {
             typedef POLY_FT3::VertexEx VertexEx;
             static constexpr auto IdentityCode = Code(POLY_FT3::IdentityCode).set(Code::QuadVertics);
 
@@ -248,7 +277,7 @@ namespace JabyEngine {
             }
         };
 
-        struct POLY_G4 : public internal::RenderPrimitive<POLY_G4>, public internal::PolyCodeInterface<POLY_G4>, public internal::LinkedElementCreator<POLY_G4> {
+        struct POLY_G4 : public internal::RenderPrimitive<POLY_G4>, public internal::PolyCodeInterface<POLY_G4>, public internal::Poly4Interface<POLY_G4>, public internal::LinkedElementCreator<POLY_G4> {
             static constexpr auto IdentityCode = Code(POLY_G3::IdentityCode).set(Code::QuadVertics);
 
             Color24 color0;  // a
@@ -292,7 +321,7 @@ namespace JabyEngine {
             }
         }; 
 
-        struct POLY_GT4 : public internal::RenderPrimitive<POLY_GT4>, public internal::PolyCodeInterface<POLY_GT4>, public internal::LinkedElementCreator<POLY_GT4> {
+        struct POLY_GT4 : public internal::RenderPrimitive<POLY_GT4>, public internal::PolyCodeInterface<POLY_GT4>, public internal::Poly4Interface<POLY_GT4>, public internal::LinkedElementCreator<POLY_GT4> {
             typedef POLY_GT3::VertexEx VertexEx;
             static constexpr auto IdentityCode = Code(POLY_GT3::IdentityCode).set(Code::QuadVertics);