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Henrik RydgårdandClaude Opus 5.5
9162592493
Without SSE or NEON, triangle pixels got the secondary color in place of the primary one plus it, so lit triangles came out black. It showed as the "unexplained" known failures on riscv64 and loongarch64, and broke the new gpu/lighting/shademap there. Reproduced on arm64 by building without NEON. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
To get to 100% compatibility, we will need a software renderer as there are games out there that do tricks that can't really be faked in a sensible way. Useful for homebrew too that mix sw and accel rendering.