Files
psxrecomp/runtime/include
Matthew Stanley cad8c96ae1 widescreen: per-prim proportion correction (sprite tags + HUD squash)
User-validated on Tomba: world, characters and HUD all present at
native proportions on the 16:9 stretch.

Mechanism (all parameterized via game.toml [widescreen], inert by
default and at 4:3):

- recompiler: [widescreen] sprite_tag_funcs emits a
  psx_ws_sprite_tag(cpu) callback at the entry of each listed
  function (the game engine's shared per-prim helper). The runtime
  records prim pointer ($a0) -> GTE-projected anchor (read from
  sprite_anchor_addr scratchpad) in a frame-stamped hash.
- gpu.c: at GP0 execution, prims whose guest address (from the DMA
  linked-list walk's source tracking) is tagged get every X
  re-squashed around their own anchor — undoing the present stretch
  for CPU-computed pixel offsets the GTE squash never saw. Covers
  POLY_FT4 billboards and SPRT parts; SPRT texels keep full coverage
  via gr_draw_textured_rect_scaled.
- hud_sprt_squash: untagged textured rects (SPRT family — pure
  screen-space 2D: HUD, menus) center-squash around the display
  centre. Untextured TILEs (fades) untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-12 18:43:15 -07:00
..
2026-05-17 21:58:55 -07:00