diff --git a/imgui.h b/imgui.h
index 9af8bf598..dc558dc68 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1088,9 +1088,13 @@ struct ImDrawList
     IMGUI_API void  ChannelsSetCurrent(int idx);
 
     // Internal helpers
+    // NB: all primitives needs to be reserved via PrimReserve() beforehand!
     IMGUI_API void  PrimReserve(int idx_count, int vtx_count);
     IMGUI_API void  PrimRect(const ImVec2& a, const ImVec2& b, ImU32 col);
     IMGUI_API void  PrimRectUV(const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col);
+    inline    void  PrimVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col)     { PrimWriteIdx((ImDrawIdx)_VtxCurrentIdx); PrimWriteVtx(pos, uv, col); }
+    inline    void  PrimWriteVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col){ _VtxWritePtr->pos = pos; _VtxWritePtr->uv = uv; _VtxWritePtr->col = col; _VtxWritePtr++; _VtxCurrentIdx++; }
+    inline    void  PrimWriteIdx(ImDrawIdx idx)                                 { *_IdxWritePtr = idx; _IdxWritePtr++; }
     IMGUI_API void  UpdateClipRect();
     IMGUI_API void  UpdateTextureID();
 };