perf(engine): create OpenGL objects as needed instead of each frame

1 files changed, 13 insertions, 0 deletions

diff --git a/engine/src/opengl/buffer.rs b/engine/src/opengl/buffer.rs
index 68a75fb..2be7f12 100644
--- a/engine/src/opengl/buffer.rs
+++ b/engine/src/opengl/buffer.rs
@@ -39,6 +39,19 @@ impl<Item> Buffer<Item>
     {
         self.buf
     }
+
+    /// Does a weak clone of this buffer. The buffer itself is NOT copied in any way this
+    /// function only copies the internal buffer ID.
+    ///
+    /// # Safety
+    /// The returned `Buffer` must not be dropped if another `Buffer` referencing the
+    /// same buffer ID is used later or if a [`VertexArray`] is used later.
+    ///
+    /// [`VertexArray`]: crate::opengl::vertex_array::VertexArray
+    pub unsafe fn clone_weak(&self) -> Self
+    {
+        Self { buf: self.buf, _pd: PhantomData }
+    }
 }
 
 impl<Item> Drop for Buffer<Item>