Extreme Tux Racer: game-side batching (2026-10-17)

Symptom. After its first runs (batch 2026-10-16-etr-armagetron-smokes), ETR went from 46 fps HUD on Mesa ps3.246 to 53 on ps3.262 (+15%) and 52 on ps3.299: just short of the 60 fps target, held back by the PPE.

Evidence. A frame made 19,400 GL calls and 697 draws: texture binds repeated, the terrain walked and drawn in immediate mode, Tux’s spheres rebuilt, every tree and item drawn on its own, each snow particle its own draw.

Fix. Patches 0001-0006 (ps3.324), each behind an ETR_GL_* switch: a frame went to 850 calls and 72 draws. Same boot, gloff against base (batch 2026-10-17-xmoto-etr-batching): 52 to 59 fps, CPU 83.6 to 53 s. Run uncapped it stays at 59, so what is left is not a vsync cap.