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hkmoddandClaude Opus 5.5
7c19ec27ea
The texture cache dropped a texture once it had gone 1800 frames without being drawn, and checked every 600 frames: half a minute and ten seconds at 60 frames a second. At 360 frames a second it is five seconds, so looking away from part of a level for five seconds dropped its textures, and turning back converted and uploaded them again; the faster the display, the more often. On b30 at 357 frames a second, 105 textures were dropped in 38 seconds of play. The cache now sweeps every 10 seconds of time (SDL_GetTicks, which the Android guest and the web have too) and drops the textures not drawn since the sweep three sweeps before: 30 to 40 seconds after they were last drawn, which is what it did at 60 frames a second. The frame counter still orders the palette variants. Checked with a harness test (tools/harness/tests/test_texture_idle.py) that runs xgpu_texture_cache_begin_frame from the sources against a fake clock: a texture last drawn 1 or 25 seconds in is dropped 30 to 40 seconds later at 360 frames a second, and at 60 as before; on main the 360 cases fail (dropped after 5.7 and 6.7 seconds) and the 60 one passes. Four negative controls. Not measured: the time saved, which is small on an RTX 4080 (each upload took 1.6 ms or less) and larger where conversion and uploads cost more. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>