Flashback (PPSA08546) — bring-up progress and depth-view mip stop

[edubox]

Title ID: PPSA08546 (Flashback)

Status: boots, renders and presents frames on Linux. One AGC stop is being fixed; the run after it has not been followed to gameplay yet.

Implemented state: relinker conversion of PPSA08546-app0 (including the title's own sce_module/libSceNpCppWebApi.prx and libc.prx) and the current libSceAgcDriver/libSceVideoOut libs. With a warm pipeline journal the menu/cubemap passes present at about 50–55 FPS; with a cold cache the same run spends minutes compiling and streaming.

Stop (before the fix): [videoout] presentation failed: AGC graphics: depth view mip 1 on a surface without mips, rethrown from VideoOutDriver::presentLoop after the AGC driver reports a draw failure, at about 115 s. The failing draw has DB_Z_INFO 0xa0000181 (MAXMIP 0, 128x128 D16 Z_X with HTILE) and DB_DEPTH_VIEW mips 1 to 6 over six slices. The colour target has MAXMIP 7. The depth allocation is six 64 KiB slices: the next allocation starts 0x61000 bytes later, which cannot hold a mip tail, and every view uses the same base and extent. The console therefore cannot be selecting another depth level; the fix selects the first level for a view mip on a single-level surface.

PR: #11098 (fix/agc-single-level-depth-view).

Remaining work: follow the run past the cubemap pass to gameplay, then list the next stops. The console behaviour of the ignored view mip is inferred from this title, not measured.