Add operator()(...) on buffers

source/engine/graphics/back/buffers/ElementBuffer.cpp

@@ -70,6 +70,10 @@ namespace megu {
         return this->_id <= ebo._id;
     }
 
+    bool ElementBuffer::operator()(const ElementBuffer & ebo) const {
+        return *this < ebo;
+    }
+
     std::strong_ordering ElementBuffer::operator<=>(const ElementBuffer & ebo) const {
         return this->_id <=> ebo._id; 
     }

source/engine/graphics/back/buffers/ElementBuffer.hpp

@@ -26,6 +26,7 @@ namespace megu {
             inline bool operator!=(const ElementBuffer &) const;
             inline bool operator<=(const ElementBuffer &) const;
             inline bool operator>=(const ElementBuffer &) const;
+            inline bool operator()(const ElementBuffer &) const;
 
             inline bool operator<(const ElementBuffer &) const;
             inline bool operator>(const ElementBuffer &) const;

source/engine/graphics/back/buffers/VertexArray.cpp

@@ -45,6 +45,10 @@ namespace megu {
         return this->_vao >= vao._vao;
     }
 
+    bool VertexArray::operator()(const VertexArray & vao) const {
+        return *this > vao;
+    }
+
     bool VertexArray::operator<(const VertexArray & vao) const {
         return this->_vao < vao._vao;
     }

source/engine/graphics/back/buffers/VertexArray.hpp

@@ -21,6 +21,7 @@ namespace megu {
             bool operator!=(const VertexArray &) const;
             bool operator<=(const VertexArray &) const;
             bool operator>=(const VertexArray &) const;
+            bool operator()(const VertexArray &) const;
 
             bool operator<(const VertexArray &) const;
             bool operator>(const VertexArray &) const;

source/engine/graphics/back/buffers/VerticeBuffer.cpp

@@ -90,6 +90,10 @@ namespace megu {
         return this->_id <= vbo._id;
     }
 
+    bool VerticeBuffer::operator()(const VerticeBuffer & vbo) const {
+        return *this < vbo;
+    }
+
     std::strong_ordering VerticeBuffer::operator<=>(const VerticeBuffer & vbo) const {
         return this->_id <=> vbo._id; 
     }

source/engine/graphics/back/buffers/VerticeBuffer.hpp

@@ -35,6 +35,7 @@ namespace megu {
             bool operator!=(const VerticeBuffer &) const;
             bool operator<=(const VerticeBuffer &) const;
             bool operator>=(const VerticeBuffer &) const;
+            bool operator()(const VerticeBuffer &) const;
             
             bool operator<(const VerticeBuffer &) const;
             bool operator>(const VerticeBuffer &) const;