GXEnableTexOffsets

• Category: Geometry and Vertex
• Matrix Status: Partial
• Matrix Notes: Enable bits are stored per texcoord for line/point paths, but offset effect is not yet applied during primitive expansion/rasterization.
• Matrix Link: Gfx-GX-API-Matrix

Official SDK (Reference)

• Manual root: reference/rvlsdk/man/en_US/gx
• Primary SDK source area: demos/PikminDemo/src/gx (GC-style Dolphin GX source)
• Notes:
  • Confirm official signature/prototype
  • Confirm documented side effects (register/state updates)
  • Confirm special behavior and edge cases from manual

libPorpoise Implementation

• Runtime implementation area: src/gx
• Public API surface: include/dolphin/gx
• Notes:
  • Confirm API signature matches SDK
  • Confirm state writes match SDK semantics
  • Confirm backend behavior in PC renderer path

SDK vs Porpoise Diff

• Signature parity:
  • SDK:
  • Porpoise:
• Behavioral parity:
  • SDK:
  • Porpoise:

• Known divergence:

Validation Checklist

• GX demo coverage checked
• Pikmin usage path checked
• Matrix status updated if needed
• Notes updated with concrete file/function references

Working Notes

• Docs checked against reference/man/gfx/gx/Geometry/GXEnableTexOffsets.html:
  • Signature matches: void GXEnableTexOffsets(GXTexCoordID coord, GXBool line_enable, GXBool point_enable).
  • Behavior is an enable gate for applying tex_offsets (from GXSetLineWidth/GXSetPointSize) to expanded line/point corners, per texcoord and per primitive class.
• Runtime checked in src/gx/pc_gx.c:
  • Stores enable bits per texcoord: g_gx.tex_offset_line_enable[coord] and g_gx.tex_offset_point_enable[coord].
  • Guards invalid coord >= 8 and otherwise tracks state correctly.
  • Offset effect is not yet consumed by line/point raster expansion path, so backend remains intentionally Partial.