nx2: read debug switches once; key scripts from a file

2026-10-28T11:47:45+00:00

Several debug switches were read with std::getenv on every macro call, QMD, semaphore write or draw. The UCRT getenv locks and scans the environment, thousands of times a frame; a long EDEN_NX2_KEY_SCRIPT made title 4 crawl at 2 fps. Each is now read once. EDEN_NX2_KEY_SCRIPT=@ reads the script from a file. gdbrsp.py gains 'hits' (log registers, frame chain and object words at breakpoints, following the stopped thread).

Switch 2: Turing macros, native compute, Ampere shader lowering, native tiling

2026-10-28T02:26:16+00:00

From changes.patch: the TU104/GA10x MME interpreter (shared macro context for the process's channels, also on the compute class), native compute with QMD 3.0 dependency scheduling, the Ampere-to-Maxwell shader lowering, native vertex stream sizes, and the console's GOB swizzle for textures, DMA copies and the host unswizzle shaders. Switch 2 channels turn all of it on at init. The lowering is widened for title 4 (all 32 of its programs lower): general TEX (any dimension/LOD/mask, operand split 1+1/2+1/2+2/4+n, any but consistent descriptor buffer), cube/array, SULD channel masks, 128-bit STG, indexed IPA, VOTE, SHFL with any immediate or predicate output, R2P/P2R byte select, uniform ULOP3/ULEA/UBREV/UFLO.SH/UISETP signed/UMOV URZ, IMNMX cbuf, IADD3 and FFMA uniform operands, FMUL /4 /8 x8, and BSSY/BSYNC/BREAK/WARPSYNC as no-ops. The capture stops at unmapped memory. EDEN_NX2_SHADER_DUMP dumps every native program; tools in C:\dev\nx2work test the lowering offline.

eglantine-cirakg/src/video_core/native_query_trace.h, branch nx2

nx2: read debug switches once; key scripts from a file

Switch 2: Turing macros, native compute, Ampere shader lowering, native tiling