[orbz22]

What

Astro's Playroom (PPSA01325) terminates on sceFontGlyphDefineAttribute not implemented during start-up. Its only call site (0x1877e92) is:

sceFontGenerateCharGlyph(handle, code, &detail, &glyph)
sceFontGlyphDefineAttribute(glyph, 0x11, 0)
sceFontRenderCharGlyphImageHorizontal(handle, code, ...)   (retried with '_' on failure)
sceFontDeleteGlyph(nullptr, &glyph)

The glyph is deleted without being used, and the character is drawn from the font handle and code, not from the glyph. The title does not import sceFontGlyphGetAttribute. What the attributes mean is unknown (shadPS4 stubs the function too), so this is a silent stub under the rule in CONTRIBUTING (it unblocks a title and only affects the UI): it returns SCE_FONT_ERROR_INVALID_GLYPH for a null glyph or one without the glyph magic, and SCE_FONT_OK otherwise, ignoring the attribute and its value. The value is taken as 64 bits because the call site zeroes all of rdx. TechnicalDebt lists it under silent stubs. sceFontGlyphGetAttribute still throws.

Tested

Windows 11, MinGW-w64 GCC 15.2.0 (WinLibs r7), CMake 4.4.4, Ninja 1.13.2, on 1e5bb88.

• guest_font now generates a glyph and checks the valid, null and non-glyph cases: --repeat until-fail:3 passed 3/3.
• Full build, --target libs, full ctest: 393/393 passed.
• PPSA01325 (own dump) with this libSceFont: start-up continues past the font setup to its first presentation. Getting there also needs feat(libs): provide the exports PPSA01325 imports that no library has #1158, feat(libSceAgcDriver): back the global data share with driver-owned guest memory #285 and a local libSceJobManager.

Checklist

• Based on current main; no other open PR implements the same functions
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed in TechnicalDebt
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• AI-assisted: yes

🤖 Generated with Claude Code

https://claude.ai/code/session_01UTjpbMX7BUFMZZaxJE98zV

[github-actions]

Progress report (4e74283 → 0a6a8a7)

📈 System libraries: 86.17% (+0.04%, +1 implemented functions)

✅ 1 implemented

Library	Name
libSceFont	sceFontGlyphDefineAttribute