Add optional Windows file caching for GTA IMG archives - #5338
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Summary
Adds an
Enable Windows file caching for IMG archivescheckbox in Advanced settings, disabled by default. The preference is saved and changes require restarting MTA.Following SilentPatch's approach, the patch changes the opcode at
0x406BC6:0xEB(JMP) skipsFILE_FLAG_NO_BUFFERING, allowing Windows to cache IMG reads.0x77(JA) restores GTA's original behavior: unbuffered reads for reported sector sizes ≤2048 bytes; caching permitted for larger sectors.Unchecked means original GTA behavior, not
always disable caching.Motivation
Inspired by SilentPatch's approach to GTA SA's unbuffered archive reads. Allowing Windows to cache frequently accessed game data may reduce disk I/O and improve streaming performance in certain situations on modern hardware, including SSD-based systems.
Test plan
Start MTA and travel around the map with the option disabled, then enable it and restart. Compare loading stutter and streaming performance. Confirm the setting persists after restarting.
Checklist