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ppsspp/GPU
Henrik RydgårdandClaude Opus 5.5 93a3c55f47 SoftGPU: Queue primitives without locked increments or a stack copy
BinQueue's head, tail and size were atomics, so each push was two
locked increments, but only the emulation thread uses them: the drawing
threads read items, which the tiles publish. And each BinItem was built
on the stack in pieces and then copied with wider loads, a store
forwarding stall. Now the indices are plain and items are built in
place (PushItem). AddTriangle was 8% of the emulation thread's time in
God of War, which now takes 4.1 s for five emulated seconds (from 4.2 s),
Wipeout 3.5 s (from 3.7 s).

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-10 13:56:03 +02:00
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2026-06-02 14:53:37 +02:00