Per-device GPU profiling

• The background DrawOpaqueObjects took 46ms, consuming most of the frame budget.
  Independent inefficiencies had piled up.

1. [Textures] Normal maps used unnecessarily across background objects.
   150 normal maps remained whose perceived-quality contribution under in-game FOV / lighting was low.

2. [Shader] Lobby (static composition) and in-game (real-time battle) background objects
   used the same heavyweight Uber shader.
   In-game, unnecessary stylization features were executed per draw call.

3. [Geometry] Terrain surface blending was implemented with a splatmap.
   Multi-texture sampling + blending ops ran per fragment in the pixel shader.

4. [Geometry] Unnecessary edges remained on background meshes. Edges not contributing to silhouette / form increased vertex count and added rasterizer load.

D build → F build

Shadow

7.7ms → 7.1ms

DrawOpaqueObjects

46ms → 27.1ms

COS PostProcessing

9.7ms → 9.5ms

UI

2.4ms → 3.9ms

• Galaxy S21 [ 8GB ] Exynos 10 (2100)

Low[60] - FPS 60 → Low[60] - FPS 60
Mid[60] - FPS 45 – 55 ( PostProcess off ) → Mid[60] - FPS 60 ( PostProcess on )
High[60] - FPS 20 – 30 → High[60] - FPS 60

• Galaxy S9+ [ 6GB ] Exynos 9

Low[60] - FPS 40 → Low [60] - FPS 60
Mid[60] - FPS 30 ( PostProcess off ) → Mid [60] - FPS 60 ( PostProcess on )
High[60] - FPS 25 → High [60] - FPS 30 ~ 40

• Galaxy S9 [ 4GB ] Exynos 9

Low[60] - (reaches town but unplayable) → Low [60] - FPS 40
Mid[60] - ( cannot enter ) → Mid [60] - FPS 30 ( PostProcess on )
High[60] - ( cannot enter ) → High [60] - (reaches town but unplayable)