diff --git a/Frostbite2D/include/frostbite2D/graphics/render_resolution.h b/Frostbite2D/include/frostbite2D/graphics/render_resolution.h
index 75055fd..56620af 100644
--- a/Frostbite2D/include/frostbite2D/graphics/render_resolution.h
+++ b/Frostbite2D/include/frostbite2D/graphics/render_resolution.h
@@ -4,10 +4,13 @@
 
 namespace frostbite2D {
 
+/**
+ * @brief 虚拟分辨率缩放模式
+ */
 enum class ResolutionScaleMode {
-  Disabled,
-  Fit,
-  FitHeight,
+  Disabled,  ///< 不保持纵横比，直接按窗口宽高分别缩放
+  Fit,       ///< 保持纵横比并完整显示，按较小缩放因子适配
+  FitHeight, ///< 以高度优先适配，宽度不足时回退为 Fit
 };
 
 struct RenderResolutionState {