forked from Ports/goldeneye-pc-port
James Dansereau
52539d10de
- README, LICENSE (MIT for the port layer), NOTICE, CONTRIBUTING. - Restructure docs: internals.md, porting-notes.md, dev-process.md + dev/agentic-development.md (the research write-up), dev/ (raw record). - Replace decomp status-badge CI with a PC-port validate workflow. - Remove session/agent scaffolding and stale planning docs from the tree. - Add .gitattributes (normalize line endings to LF); add screenshots. The pre-2026-08 history is the GoldenEye 007 decompilation by Larry Ficken (KholdFuzion) and contributors, preserved unchanged. The PC-port work from 2026-08-17 on is mine.
64 lines
2.6 KiB
C
64 lines
2.6 KiB
C
/*
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* GE adaptation header for fast3d (see docs/internals.md).
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*
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* fast3d was written against Perfect Dark's extended GBI set
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* (pd_port/src/include/gbiex.h + PD's include/PR/gbi.h). GoldenEye shares the
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* same Rare "Indy" engine family but its extension header is
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* include/gbi_extension.h, which defines G_TRI4 (0xb1) and GE's custom
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* combine/RM modes — but NOT the PD-specific opcodes below.
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*
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* GE never emits the PD-only opcodes (its RSP ucode is rsp/graphics/gmain.s,
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* which has no handling for them), so the corresponding dispatch cases in
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* gfx_pc.cpp are dead code for this port; they only need to COMPILE. The
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* values mirror PD's gbiex.h exactly so that if a ROM ever does emit one,
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* behaviour matches the sibling port rather than hitting the fatal "unknown
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* opcode" path.
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*
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* G_COL (7) is "new in PD": GE fills vertex colours directly in Vtx.cn[]
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* and its ucode has no colour-table DMA, so that case is dead here too.
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*/
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#ifndef FAST3D_GBIEX_H
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#define FAST3D_GBIEX_H
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#include <PR/gbi.h>
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#include "include/gbi_extension.h" /* G_TRI4 (0xb1), GE's own extensions */
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/* PD extension opcodes (pd_port/src/include/gbiex.h). */
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#define G_COL 7 /* vertex colour DMA — PD-only */
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#define G_SETFB_EXT 0x21
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#define G_SETTIMG_FB_EXT 0x23
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#define G_INVALTEXCACHE_EXT 0x34
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#define G_TEXRECT_WIDE_EXT 0x37
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#define G_FILLRECT_WIDE_EXT 0x38
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#define G_SETGRAYSCALE_EXT 0x39
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#define G_EXTRAGEOMETRYMODE_EXT 0x3a
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#define G_SETINTENSITY_EXT 0x40
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#define G_COPYFB_EXT 0x41
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#define G_IMAGERECT_EXT 0x42
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#define G_RDPFLUSH_EXT 0x43
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#define G_CLEAR_DEPTH_EXT 0x44
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#define G_SETSUBPIXELOFFSET_EXT 0x45
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/* Extra geometry/aspect bits used by the PD ucode (dead for GE). */
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#define G_ASPECT_LEFT_EXT 0x00000010
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#define G_ASPECT_RIGHT_EXT 0x00000020
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#define G_ASPECT_WIDE_EXT 0x00000040
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#define G_ASPECT_CENTER_EXT (G_ASPECT_LEFT_EXT | G_ASPECT_RIGHT_EXT)
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#define G_ASPECT_MODE_EXT (G_ASPECT_CENTER_EXT | G_ASPECT_WIDE_EXT)
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#define G_NO_CLIPPING_EXT 0x00000100
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#define G_MODULATE_EXT 0x00000200
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#define G_TF_BLUR_EXT (1 << G_MDSFT_TEXTFILT)
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/* Big-endian read helpers (pd_port/src/include/platform.h). The host is
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* little-endian, so a "BE" value in ROM data must be byte-swapped. */
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#if defined(__GNUC__) || defined(__clang__)
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#define PD_BSWAP16(x) __builtin_bswap16(x)
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#define PD_BSWAP32(x) __builtin_bswap32(x)
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#else
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#error "Implement PD_BSWAP macros for your compiler."
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#endif
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#define PD_BE16(x) PD_BSWAP16(x)
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#define PD_BE32(x) PD_BSWAP32(x)
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#endif /* FAST3D_GBIEX_H */
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