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Working on performance. Still.

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Scott Duensing 2026-07-07 02:44:00 -05:00
parent 813bf595bc
commit 3b4effb95a
18 changed files with 1852 additions and 1187 deletions
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60
NATIVE-PERF-PLAN.md
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@ -241,7 +241,17 @@ perf-directive memory with the outcome.
ZERO below-floor cells for the first time; remaining below-floor is ZERO below-floor cells for the first time; remaining below-floor is
Amiga-only (circle family + unaligned 95% / sweep16 89%) + DOS Amiga-only (circle family + unaligned 95% / sweep16 89%) + DOS
audioFrameTick (gates nothing). audioFrameTick (gates nothing).
- [~] Phase 2 IN PROGRESS 2026-07-07. Recon: 6-agent workflow + - [x] Phase 2 COMPLETE 2026-07-07 (final gate 49/49 x4 + iigs-verify;
detail below). Steps D3 closed it: R6 TMASK_BYTE macro inline
(copyMasked +9%, loop-back needed brl past 8-bit branch range) and
R10 iigsDrawPixelMark fused plot+mark (jlDrawPixel 3,179 -> 5,576,
+75%; batching plotters keep the unfused inner). EXIT NUMBERS:
tilemap tiles/s ST 4,050 / Amiga 3,750 / IIgs 2,950 / DOS 12,900
(from 1,600 / 2,300 / 1,750 / 10,000); gameFrame ST 21 / Amiga 25 /
IIgs 10 / DOS 19; IIgs tilePaste gap-to-ceiling 2.15x. Remaining
per-call floor = public wrapper + one JSL/call -> Phase 3's job.
Optional non-gating leftovers: R7 saveAndDraw consolidation, R12
IIgs C-residue reshapes. Recon: 6-agent workflow +
merged synthesis (12 ranked items R1-R12) + calibrated-probe layer merged synthesis (12 ranked items R1-R12) + calibrated-probe layer
split (see ERRATUM above). Step A LANDED (gate 49/49 x4): split (see ERRATUM above). Step A LANDED (gate 49/49 x4):
plane-pointer inlining via new src/amiga/amigaPlanar.h + plane-pointer inlining via new src/amiga/amigaPlanar.h +
@ -263,10 +273,50 @@ perf-directive memory with the outcome.
pointers either way; simple loop re-measured exactly at ST pointers either way; simple loop re-measured exactly at ST
baseline; DOS flat) -- so Amiga unrolls, everyone else keeps the baseline; DOS flat) -- so Amiga unrolls, everyone else keeps the
simple loop (documented at the #if in surface.c). simple loop (documented at the #if in surface.c).
REMAINING: R4a 68k tile call-chain flatten + R8 Amiga unroll check; Step E1 LANDED (gate 49/49 x4): R4a = ST/Amiga tile ops moved to
Step D IIgs glue (R2/R5/R6/R10 fused asm entries -- biggest IIgs always-inline per-port headers (stTile.h / amigaTile.h; jlpTile*
upside, ~2x its tile rows; own session recommended); R9 palette/SCB macro-aliased in port.h before the dispatch tail, headers included
memcmp->flags on 68k/DOS presents (hygiene). at its END so the portData==NULL fallbacks see the jlpGenericTile*
prototypes; ST_BYTES_PER_ROW/GROUP moved to stPlanar.h;
surface68kStTileFill8x8 extern moved to stTile.h) -- ST tiles
+9-14%, Amiga +5-11%, DOS flat (already single-layer). R9 =
ST/Amiga/DOS presents consume gStageScbDirty/gStagePaletteDirty
instead of memcmp'ing 512-712-byte cached mirrors (mirrors + Amiga
memcmpLongs deleted; stageAlloc re-arms both flags for
jlShutdown/jlInit cycles) -- gameFrame ST 19->21 / Amiga 23->25 /
DOS 18->19 fps. Step E2 LANDED (gate 49/49 x4): R8 Amiga 8-row
d16(An) unrolls in amigaTile.h (fill/copy/paste/snap;
copyMasked/pasteMono stay rolled) -- tilePaste +36%, tileSnap +52%,
tileFill +32%, tileCopy +28%, map row 56->75. SESSION NET (from
honest post-audio-fix baselines): map row tiles/s ST 3,100->4,000 /
Amiga 2,300->3,750 / DOS 10,000->12,900; gameFrame ST 19->21 /
Amiga 23->25 / DOS 18->19 (and vs the pre-audio-fix world: ST
gameFrame 9->21). PERF.md table regenerated from the E2-gate logs.
Step D1 LANDED (IIgs gate 49/49 + make iigs-verify framebuffer
check; other ports covered by the D1-gate C-side pass): R2 fused
stage-tile entries iigsTileFillMark/PasteMark/CopyMark in
joeyDraw.s (.text.iigsFusedTile -- ONE section for entries + the
stageTileMark helper; a cross-section 16-bit jsr wild-jumped into
$00CFxx twice before the section-atomicity rule was learned, see
the cross-section-jsr feedback memory). One JSL now does
derive($01:2000 + gRowOffsetLut[by*8] + bx*4) + op via long,X +
band widen. IIgs: tileFill +64% (3,251), tilePaste +61% (2,710),
tileCopy +38%, map row 35->59 (+69%), gameFrame 10->11 fps;
tilePaste gap to ceiling 3.5x -> 2.15x. port.h stage-gates the
three macros; tile.c's tileMarkDirtyFused knob keeps
copyMasked/pasteMono on the separate marker. Step D2 LANDED (gate
49/49 x4): R5 spriteCompiled* dispatchers moved to
src/core/spriteDispatch.h as always-inline, consumed only by
sprite.c (extern decls removed from spriteInternal.h; compile-time
machinery stays in spriteCompile.c). Sprite rows: IIgs +6-13%
(SaveAndDraw 423), ST SaveUnder +15%, Amiga +5-11%, DOS +2-16%.
Measurement notes recorded in PERF.md: gameFrame quantizes +/-1
fps run-to-run; DOS unaligned-draw row is bimodal (~3,800/~5,100)
across identical binaries -- don't chase it. REMAINING: R6
copyMasked tmaskByte de-layering (32 jsr/call = 384 cyc + BSS
scratch, 13-20% of the op; + optional CopyMaskedMark fusion), R10
fused drawPixel+mark asm entry (~820 -> ~300 cyc), optional R7
saveAndDraw consolidation, optional R12 IIgs C-residue reshapes.
- [ ] Phase 3 - [ ] Phase 3
- [ ] Phase 4 - [ ] Phase 4
- [ ] Phase 5 - [ ] Phase 5

151
PERF.md
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@ -102,6 +102,85 @@ half-buffer IRQ), IIgs 0% (no handler installed until PlayMod). ALL
pre-2026-07-07 ST comparisons -- including the Phase-0 ceiling gaps pre-2026-07-07 ST comparisons -- including the Phase-0 ceiling gaps
and the Phase-1 relative results -- understated the ST by ~2x. and the Phase-1 relative results -- understated the ST by ~2x.
**2026-07-07, NATIVE-PERF PHASE 2 COMPLETE -- Steps D3 (R6 + R10)
close the phase:** (R6) the IIgs masked-copy inner's 4 x 8 jsr/rts
round-trips to tmaskByte were inlined via the TMASK_BYTE assembler
macro (identical body; the row loop-back became brl -- the expanded
body exceeds 8-bit branch range): jlTileCopyMasked 625 -> 681 (+9%,
exactly the 384-cycle model). (R10) the stage arm of jlDrawPixel is
one fused JSL (iigsDrawPixelMark: single-row widen + nibble RMW plot
against the pinned stage base): jlDrawPixel 3,179 -> 5,576 (+75%, 502
cyc/call incl. wrapper vs the measured 880 before); the batching
plotters (lines/circles, plotPixelNoMark) keep the unfused inner and
were flat, as were tiles/sprites. Final gate 49/49 x4 + make
iigs-verify. PHASE-2 EXIT vs its gate ("small-op rows move measurably
toward Phase-0 ceilings on all ports; goldens hold"): tilemap row
tiles/sec ST 1,600 -> 4,050 / Amiga 2,300 -> 3,750 / IIgs 1,750 ->
2,950 / DOS 10,000 -> 12,900; gameFrame ST 9 -> 21 / Amiga 18 -> 25 /
IIgs 10 / DOS 18 -> 19; IIgs tilePaste ceiling gap 3.5x -> 2.15x, ST
2.6x. The remaining per-call floor is the public wrapper + one
JSL/call -- Phase 3 batching territory. Optional leftovers R7
(saveAndDraw consolidation) and R12 (IIgs C-residue reshapes) are
recorded in the plan, not phase-gating.
**2026-07-07, NATIVE-PERF Phase 2 Step D2 LANDED -- sprite dispatch
flattening (R5):** the spriteCompiled* runtime dispatchers moved from
spriteCompile.c into spriteDispatch.h as always-inline functions
consumed only by sprite.c, deleting the cross-TU call per compiled
sprite op and letting the compiler share the slot/field loads the
caller already did. Gated 49/49 x4. Sprite rows: IIgs +6-13%
(SaveAndDraw 376 -> 423, Draw 906 -> 966), ST SaveUnder +15% (2,611),
Amiga +5-11% (SaveUnder 2,053), DOS SaveUnder +16% (10,743). Two
measurement footnotes: gameFrame wobbles +/-1 fps between runs
(single-digit iters per 16-frame window -- quantization, not signal;
ST has bounced 21/22 across three consecutive gates), and DOS
`jlSpriteDraw unaligned` is BIMODAL across runs of identical binaries
(~3,800 vs ~5,100; seen 07-06 and again today; the all-phase sweep16
row is stable at ~362, so per-phase behavior is fine -- likely DOSBox
dynamic-core state; do not chase single-run deltas on that row).
**2026-07-07, NATIVE-PERF Phase 2 Step D1 LANDED -- IIgs fused tile
entries (R2):** jlTileFill/Copy/Paste on the stage now run ONE JSL
each: new joeyDraw.s entries (iigsTile*Mark, section
.text.iigsFusedTile) derive the destination in asm from the pinned
$01:2000 stage base + gRowOffsetLut, write via long,X with the stage
literal folded into each store, and widen the dirty band via a shared
stageTileMark helper -- replacing C-side pointer math plus two JSLs
(op + marker). Gated 49/49 (pixels) AND make iigs-verify (framebuffer
-- the mark half is hash-blind, so the display check is load-bearing).
RESULTS: IIgs tileFill 1,981 -> 3,251 (+64%), tilePaste 1,687 -> 2,710
(+61%), tileCopy 1,441 -> 1,988 (+38%), map row 35 -> 59 (+69% = 2,950
tiles/s), gameFrame 10 -> 11 fps; unfused controls (copyMasked, snap,
sprites) flat. IIgs tilePaste is now ~1,030 cyc/call vs the 480-cyc
hand-coded ceiling (gap 2.15x, was 3.5x). Toolchain landmine found en
route: a 16-bit jsr between .section blocks can cross OMF segment
banks (no link error, wild jump into $00CFxx) -- helpers must share
their callers' section or be jsl/rtl; see the cross-section-jsr
feedback memory.
**2026-07-07, NATIVE-PERF Phase 2 Steps A-E LANDED (per-op tax):**
five hash-gated steps, each 49/49 x4. (A) plane-pointer access
inlined into the 68k compiled-sprite dispatchers (amigaPlanar.h /
stPlanar.h; the jlpSurfacePlanePtr cross-TU call -- ~190 cyc x4 per
Amiga dispatch -- deleted): Amiga sprite ops +10-23%. (B) whole-tile
dirty marks specialized (band = [bx*2, bx*2+1] with compile-time
proof, unrolled 8-row widen): tiles +9-28% on 68k/DOS. (C) jlDrawRect
raw-edge fills + ONE band-identical mark (+22-40%); the multi-row
widen unroll is Amiga-only by measurement (gcc-mint compiled it WORSE,
ST -5% -- see the per-port #if in surface.c). (D=R9) presents consume
the core gStageScbDirty/gStagePaletteDirty flags instead of
memcmp'ing 512-712-byte cached mirrors: gameFrame +1-2 fps on
ST/Amiga/DOS. (E) ST/Amiga tile ops moved into always-inline per-port
headers (stTile.h / amigaTile.h), deleting the second cdecl layer
(ST tiles +9-14%, Amiga +5-11%), then the Amiga row loops unrolled to
d16(An) form (tilePaste +36%, tileSnap +52%). NET SESSION MOVEMENT on
the tile gate row (tiles/sec, map 10x5): ST 1,600 -> 4,000; Amiga
2,300 -> 3,750; DOS 10,000 -> 12,900. gameFrame: ST 9 -> 21, Amiga
23 -> 25, DOS 18 -> 19 fps (IIgs untouched at 10 -- its fused-asm
glue is Phase 2 Step D, still open). The present-row jumps (ST 467,
DOS 1,137) are the dirty-union idle early-out running flag-gated;
gameFrame is the honest present signal.
Correctness statement backing this table: all four ports produce Correctness statement backing this table: all four ports produce
BYTE-IDENTICAL pixels on every measured op and every correctness BYTE-IDENTICAL pixels on every measured op and every correctness
check -- **49/49** surface hashes match the frozen goldens in check -- **49/49** surface hashes match the frozen goldens in
@ -171,43 +250,43 @@ unaffected by the ST fix).
| Op | IIgs (ops/sec) | Amiga (ops/sec, % of IIGS) | Atari ST (ops/sec, % of IIGS) | DOS (ops/sec, % of IIGS) | | Op | IIgs (ops/sec) | Amiga (ops/sec, % of IIGS) | Atari ST (ops/sec, % of IIGS) | DOS (ops/sec, % of IIGS) |
| --- | --- | --- | --- | --- | | --- | --- | --- | --- | --- |
| jlSurfaceClear | 33 | 75 (227%) | 89 (270%) | 67 (203%) | | jlSurfaceClear | 33 | 75 (227%) | 88 (267%) | 66 (200%) |
| jlPaletteSet | 1561 | 11453 (734%) | 10255 (657%) | 29828 (1911%) | | jlPaletteSet | 1561 | 11403 (730%) | 10388 (665%) | 29809 (1910%) |
| jlScbSetRange | 163 | 4003 (2456%) | 4744 (2910%) | 8491 (5209%) | | jlScbSetRange | 163 | 3953 (2425%) | 4833 (2965%) | 8495 (5212%) |
| jlDrawPixel | 3179 | 5853 (184%) | 6645 (209%) | 23689 (745%) | | jlDrawPixel | 5576 | 5853 (105%) | 6522 (117%) | 23687 (425%) |
| jlDrawLine H | 1142 | 1703 (149%) | 2660 (233%) | 5708 (500%) | | jlDrawLine H | 1142 | 1753 (154%) | 2670 (234%) | 5708 (500%) |
| jlDrawLine V | 99 | 269 (272%) | 265 (268%) | 456 (461%) | | jlDrawLine V | 99 | 303 (306%) | 261 (264%) | 468 (473%) |
| jlDrawLine diag | 42 | **40 (95%)** | 86 (205%) | 108 (257%) | | jlDrawLine diag | 42 | **40 (95%)** | 88 (210%) | 109 (260%) |
| jlDrawRect 100x100 | 89 | 203 (228%) | 216 (243%) | 378 (425%) | | jlDrawRect 100x100 | 73 | 285 (390%) | 279 (382%) | 454 (622%) |
| jlDrawCircle r=16 | 303 | **285 (94%)** | 359 (118%) | 461 (152%) | | jlDrawCircle r=16 | 304 | **285 (94%)** | 366 (120%) | 447 (147%) |
| jlDrawCircle r=80 | 70 | **61 (87%)** | 83 (119%) | 98 (140%) | | jlDrawCircle r=80 | 70 | **63 (90%)** | 83 (119%) | 98 (140%) |
| jlFillRect 16x16 | 605 | 1153 (191%) | 1211 (200%) | 3017 (499%) | | jlFillRect 16x16 | 602 | 1153 (192%) | 1203 (200%) | 3013 (500%) |
| jlFillRect 80x80 | 110 | 269 (245%) | 236 (215%) | 412 (375%) | | jlFillRect 80x80 | 110 | 285 (259%) | 240 (218%) | 414 (376%) |
| jlFillRect 320x200 | 21 | 66 (314%) | 78 (371%) | 59 (281%) | | jlFillRect 320x200 | 21 | 68 (324%) | 77 (367%) | 58 (276%) |
| jlFillCircle r=40 | 42 | **31 (74%)** | 155 (369%) | 156 (371%) | | jlFillCircle r=40 | 42 | **31 (74%)** | 155 (369%) | 156 (371%) |
| jlSamplePixel | 4815 | 7253 (151%) | 9603 (199%) | 46266 (961%) | | jlSamplePixel | 4797 | 7253 (151%) | 9603 (200%) | 46397 (967%) |
| jlTileFill | 1981 | 2253 (114%) | 3144 (159%) | 9301 (470%) | | jlTileFill | 3251 | 3753 (115%) | 3855 (119%) | 11840 (364%) |
| jlTileCopy | 1441 | 1853 (129%) | 2720 (189%) | 8764 (608%) | | jlTileCopy | 1988 | 2903 (146%) | 3445 (173%) | 10913 (549%) |
| jlTileCopyMasked | 623 | 953 (153%) | 1366 (219%) | 3147 (505%) | | jlTileCopyMasked | 681 | 1003 (147%) | 1632 (240%) | 3391 (498%) |
| jlTilePaste | 1741 | 2253 (129%) | 3203 (184%) | 9834 (565%) | | jlTilePaste | 2710 | 3803 (140%) | 4033 (149%) | 12545 (463%) |
| jlTileSnap | 2520 | 3503 (139%) | 5751 (228%) | 19290 (765%) | | jlTileSnap | 2530 | 6003 (237%) | 6403 (253%) | 19247 (761%) |
| jlSpriteSaveUnder | 545 | 1503 (276%) | 2196 (403%) | 9248 (1697%) | | jlSpriteSaveUnder | 602 | 2103 (349%) | 2611 (434%) | 10743 (1785%) |
| jlSpriteDraw | 902 | 953 (106%) | 1188 (132%) | 6234 (691%) | | jlSpriteDraw | 966 | 1103 (114%) | 1283 (133%) | 6390 (661%) |
| jlSpriteRestoreUnder | 510 | 1203 (236%) | 1662 (326%) | 5925 (1162%) | | jlSpriteRestoreUnder | 545 | 1453 (267%) | 1781 (327%) | 6246 (1146%) |
| jlSpriteSaveAndDraw | 376 | 603 (160%) | 803 (214%) | 4271 (1136%) | | jlSpriteSaveAndDraw | 423 | 753 (178%) | 892 (211%) | 4656 (1101%) |
| jlStagePresent full | 67 | 359 (536%) | 125 (187%) | 360 (537%) | | jlStagePresent full | 67 | 540 (806%) | 467 (697%) | 1132 (1690%) |
| jlInputPoll | 228 | 4003 (1756%) | 2788 (1223%) | 3148 (1381%) | | jlInputPoll | 228 | 4003 (1756%) | 2841 (1246%) | 3148 (1381%) |
| jlKeyDown | 10191 | 39303 (386%) | 45286 (444%) | 77548 (761%) | | jlKeyDown | 10191 | 39753 (390%) | 44448 (436%) | 77738 (763%) |
| jlKeyPressed | 11389 | 38053 (334%) | 45286 (398%) | 75092 (659%) | | jlKeyPressed | 11389 | 38003 (334%) | 44448 (390%) | 74907 (658%) |
| jlMouseX | 20214 | 96703 (478%) | 117981 (584%) | 155372 (769%) | | jlMouseX | 20214 | 97703 (483%) | 117920 (583%) | 155685 (770%) |
| joeyJoyConnected | 10191 | 39303 (386%) | 43440 (426%) | 77548 (761%) | | joeyJoyConnected | 10191 | 38903 (382%) | 44260 (434%) | 77748 (763%) |
| jlAudioFrameTick | 27509 | 55853 (203%) | 40637 (148%) | **11527 (42%)** | | jlAudioFrameTick | 27509 | 57003 (207%) | 39885 (145%) | 59372 (216%) |
| jlAudioIsPlayingMod | 17627 | 56453 (320%) | 60441 (343%) | 127708 (725%) | | jlAudioIsPlayingMod | 11071 | 56403 (509%) | 60441 (546%) | 128214 (1158%) |
| surfaceMarkDirtyRect (via jlFillRect 32x32) | 323 | 853 (264%) | 774 (240%) | 1472 (456%) | | surfaceMarkDirtyRect (via jlFillRect 32x32) | 323 | 853 (264%) | 788 (244%) | 1476 (457%) |
| jlSpriteDraw unaligned | 845 | **803 (95%)** | 992 (117%) | 5118 (606%) | | jlSpriteDraw unaligned | 906 | **903 (100%)** | 1070 (118%) | 3837 (424%) |
| jlSpriteDraw sweep16 | 56 | **50 (89%)** | 64 (114%) | 363 (648%) | | jlSpriteDraw sweep16 | 60 | **56 (93%)** | 68 (113%) | 362 (603%) |
| jlTilePaste map 10x5 | 35 | 46 (131%) | 62 (177%) | 200 (571%) | | jlTilePaste map 10x5 | 59 | 78 (132%) | 80 (136%) | 259 (439%) |
| gameFrame composite | 10 | 23 (230%) | 19 (190%) | 18 (180%) | | gameFrame composite | 10 | 25 (250%) | 21 (210%) | 19 (190%) |
> **IIgs full-screen ceiling (~29 ops/sec).** A full-screen op moves > **IIgs full-screen ceiling (~29 ops/sec).** A full-screen op moves
> 32000 bytes = 16000 word-stores x 6 cyc (STA long,X / PEI, both > 32000 bytes = 16000 word-stores x 6 cyc (STA long,X / PEI, both

24
include/joey/platform.h
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@ -140,12 +140,12 @@
#define JL_HAS_DRAW_CIRCLE // amiga planar circle, function #define JL_HAS_DRAW_CIRCLE // amiga planar circle, function
#define JL_HAS_FILL_CIRCLE // amiga planar fill circle, function -- returns bool #define JL_HAS_FILL_CIRCLE // amiga planar fill circle, function -- returns bool
#define JL_HAS_FILL_RECT // amiga planar fill rect, function #define JL_HAS_FILL_RECT // amiga planar fill rect, function
#define JL_HAS_TILE_FILL // amiga planar tile fill, function #define JL_HAS_TILE_FILL // amiga planar tile fill, inline (amigaTile.h)
#define JL_HAS_TILE_COPY // amiga planar tile copy, function #define JL_HAS_TILE_COPY // amiga planar tile copy, inline (amigaTile.h)
#define JL_HAS_TILE_COPY_MASKED // amiga planar masked copy, function #define JL_HAS_TILE_COPY_MASKED // amiga planar masked copy, inline (amigaTile.h)
#define JL_HAS_TILE_PASTE // amiga planar tile paste, function #define JL_HAS_TILE_PASTE // amiga planar tile paste, inline (amigaTile.h)
#define JL_HAS_TILE_SNAP // amiga planar tile snap, function #define JL_HAS_TILE_SNAP // amiga planar tile snap, inline (amigaTile.h)
#define JL_HAS_TILE_PASTE_MONO // amiga planar mono colorize+paste, function #define JL_HAS_TILE_PASTE_MONO // amiga planar mono colorize+paste, inline (amigaTile.h)
#define JL_HAS_SPRITE_DRAW // amiga planar sprite draw, function #define JL_HAS_SPRITE_DRAW // amiga planar sprite draw, function
#define JL_HAS_SPRITE_SAVE // amiga planar sprite save, function #define JL_HAS_SPRITE_SAVE // amiga planar sprite save, function
#define JL_HAS_SPRITE_RESTORE // amiga planar sprite restore, function #define JL_HAS_SPRITE_RESTORE // amiga planar sprite restore, function
@ -194,12 +194,12 @@
#define JL_HAS_DRAW_CIRCLE // st planar circle, function #define JL_HAS_DRAW_CIRCLE // st planar circle, function
#define JL_HAS_FILL_CIRCLE // st planar fill circle, function -- returns bool #define JL_HAS_FILL_CIRCLE // st planar fill circle, function -- returns bool
#define JL_HAS_FILL_RECT // st planar fill rect, function #define JL_HAS_FILL_RECT // st planar fill rect, function
#define JL_HAS_TILE_FILL // st planar tile fill, function #define JL_HAS_TILE_FILL // st planar tile fill, inline (stTile.h)
#define JL_HAS_TILE_COPY // st planar tile copy, function #define JL_HAS_TILE_COPY // st planar tile copy, inline (stTile.h)
#define JL_HAS_TILE_COPY_MASKED // st planar masked copy, function #define JL_HAS_TILE_COPY_MASKED // st planar masked copy, inline (stTile.h)
#define JL_HAS_TILE_PASTE // st planar tile paste, function #define JL_HAS_TILE_PASTE // st planar tile paste, inline (stTile.h)
#define JL_HAS_TILE_SNAP // st planar tile snap, function #define JL_HAS_TILE_SNAP // st planar tile snap, inline (stTile.h)
#define JL_HAS_TILE_PASTE_MONO // st planar mono colorize+paste, function #define JL_HAS_TILE_PASTE_MONO // st planar mono colorize+paste, inline (stTile.h)
#define JL_HAS_SPRITE_DRAW // st planar sprite draw, function #define JL_HAS_SPRITE_DRAW // st planar sprite draw, function
#define JL_HAS_SPRITE_SAVE // st planar sprite save, function #define JL_HAS_SPRITE_SAVE // st planar sprite save, function
#define JL_HAS_SPRITE_RESTORE // st planar sprite restore, function #define JL_HAS_SPRITE_RESTORE // st planar sprite restore, function

261
src/amiga/amigaTile.h Normal file
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@ -0,0 +1,261 @@
// Amiga tile ops as always-inline functions (NATIVE-PERF Phase 2
// R4a). Bodies moved verbatim from src/amiga/hal.c so the public
// wrappers in src/core/tile.c inline them, deleting the second full
// cdecl call layer (~130-190 cycles/op on the 68000). The jlpTile*
// dispatch names are macro-aliased to these in port.h, which also
// #includes this header at its tail -- AFTER the jlpGenericTile*
// prototypes the portData == NULL fallbacks call. Do not include this
// header directly; it comes with port.h on the Amiga.
#ifndef JOEY_AMIGA_TILE_H
#define JOEY_AMIGA_TILE_H
#include <stdint.h>
#include <stdbool.h>
#include "joey/tile.h"
#include "amigaPlanar.h"
// 8-row unrolled tile access (NATIVE-PERF Phase 2 R8): row offsets
// are compile-time constants row * 40, so each row is one d16(An)
// access with no pointer stepping and no loop control. gcc-amigaos
// -O2 keeps the equivalent row loops rolled as dbf (objdump-verified,
// ~18 cycles/row of pure loop overhead). Only the row dimension
// unrolls -- the 4-plane loop keeps real per-plane setup and stays
// register-light per the m68k-gcc-unroll-backfire lesson.
#define AMIGA_TILE_ROW_OFF(_r) ((uint16_t)((_r) * AMIGA_BYTES_PER_ROW))
// Phase 5 planar dual-write for tile ops, fully planar after Phase 9
// dropped the chunky shadow. All tiles are 8-pixel aligned (8x8 blocks
// at multiples of 8), so plane writes are byte-aligned -- one plane
// byte per row, 8 rows per tile, no edge masks. Stride between rows
// in a plane is AMIGA_BYTES_PER_ROW (40).
static inline __attribute__((always_inline)) void amigaTileFill(jlSurfaceT *s, uint8_t bx, uint8_t by, uint8_t colorIndex) {
AmigaPlanarT *pd;
uint16_t plane;
uint8_t fillByte;
uint8_t *p;
pd = (AmigaPlanarT *)s->portData;
if (pd == NULL) {
jlpGenericTileFill(s, bx, by, colorIndex);
return;
}
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
fillByte = ((colorIndex >> plane) & 1u) ? 0xFFu : 0x00u;
p = pd->planes[plane] + (uint16_t)by * 8u * AMIGA_BYTES_PER_ROW + bx;
p[AMIGA_TILE_ROW_OFF(0)] = fillByte;
p[AMIGA_TILE_ROW_OFF(1)] = fillByte;
p[AMIGA_TILE_ROW_OFF(2)] = fillByte;
p[AMIGA_TILE_ROW_OFF(3)] = fillByte;
p[AMIGA_TILE_ROW_OFF(4)] = fillByte;
p[AMIGA_TILE_ROW_OFF(5)] = fillByte;
p[AMIGA_TILE_ROW_OFF(6)] = fillByte;
p[AMIGA_TILE_ROW_OFF(7)] = fillByte;
}
}
static inline __attribute__((always_inline)) void amigaTileCopy(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy) {
AmigaPlanarT *dstPd;
AmigaPlanarT *srcPd;
uint16_t plane;
uint8_t *dp;
const uint8_t *sp;
dstPd = (AmigaPlanarT *)dst->portData;
srcPd = (AmigaPlanarT *)src->portData;
if (dstPd == NULL || srcPd == NULL) {
jlpGenericTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy);
return;
}
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
dp = dstPd->planes[plane] + (uint16_t)dstBy * 8u * AMIGA_BYTES_PER_ROW + dstBx;
sp = srcPd->planes[plane] + (uint16_t)srcBy * 8u * AMIGA_BYTES_PER_ROW + srcBx;
dp[AMIGA_TILE_ROW_OFF(0)] = sp[AMIGA_TILE_ROW_OFF(0)];
dp[AMIGA_TILE_ROW_OFF(1)] = sp[AMIGA_TILE_ROW_OFF(1)];
dp[AMIGA_TILE_ROW_OFF(2)] = sp[AMIGA_TILE_ROW_OFF(2)];
dp[AMIGA_TILE_ROW_OFF(3)] = sp[AMIGA_TILE_ROW_OFF(3)];
dp[AMIGA_TILE_ROW_OFF(4)] = sp[AMIGA_TILE_ROW_OFF(4)];
dp[AMIGA_TILE_ROW_OFF(5)] = sp[AMIGA_TILE_ROW_OFF(5)];
dp[AMIGA_TILE_ROW_OFF(6)] = sp[AMIGA_TILE_ROW_OFF(6)];
dp[AMIGA_TILE_ROW_OFF(7)] = sp[AMIGA_TILE_ROW_OFF(7)];
}
}
// Pure-planar masked copy. For each row of the 8x8 tile, read 4 src
// plane bytes; compute a per-pixel "non-transparent" mask via XOR
// against the transparent index's per-plane bit pattern (a pixel
// matches transparent IFF all 4 plane bits match transparent's 4
// bits = OR of 4 XOR'd bytes is 0 in that bit). Then for each plane,
// dst = (dst & ~mask) | (src & mask) -- copy src bits at mask-set
// positions, preserve dst bits elsewhere.
static inline __attribute__((always_inline)) void amigaTileCopyMasked(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy, uint8_t transparent) {
AmigaPlanarT *dstPd;
AmigaPlanarT *srcPd;
uint8_t transBitByte[AMIGA_BITPLANES];
uint16_t i;
uint8_t row;
uint16_t srcByteOff;
uint16_t dstByteOff;
uint8_t srcPlaneBytes[AMIGA_BITPLANES];
uint8_t maskByte;
dstPd = (AmigaPlanarT *)dst->portData;
srcPd = (AmigaPlanarT *)src->portData;
if (dstPd == NULL || srcPd == NULL) {
jlpGenericTileCopyMasked(dst, dstBx, dstBy, src, srcBx, srcBy, transparent);
return;
}
transparent = (uint8_t)(transparent & 0x0Fu);
/* Per-plane "all bits set if transparent's bit at this plane is 1
* else all 0" -- so XOR gives bit set where pixel differs from
* transparent in that plane. */
for (i = 0; i < AMIGA_BITPLANES; i++) {
transBitByte[i] = ((transparent >> i) & 1u) ? 0xFFu : 0x00u;
}
for (row = 0; row < 8u; row++) {
srcByteOff = (uint16_t)((uint16_t)srcBy * 8u + row) * AMIGA_BYTES_PER_ROW + srcBx;
dstByteOff = (uint16_t)((uint16_t)dstBy * 8u + row) * AMIGA_BYTES_PER_ROW + dstBx;
srcPlaneBytes[0] = srcPd->planes[0][srcByteOff];
srcPlaneBytes[1] = srcPd->planes[1][srcByteOff];
srcPlaneBytes[2] = srcPd->planes[2][srcByteOff];
srcPlaneBytes[3] = srcPd->planes[3][srcByteOff];
/* maskByte: bit set where pixel differs from transparent in
* ANY plane -- i.e., where the pixel is non-transparent. */
maskByte = (uint8_t)((srcPlaneBytes[0] ^ transBitByte[0])
| (srcPlaneBytes[1] ^ transBitByte[1])
| (srcPlaneBytes[2] ^ transBitByte[2])
| (srcPlaneBytes[3] ^ transBitByte[3]));
for (i = 0; i < AMIGA_BITPLANES; i++) {
uint8_t existing = dstPd->planes[i][dstByteOff];
dstPd->planes[i][dstByteOff] = (uint8_t)((existing & (uint8_t)~maskByte)
| (srcPlaneBytes[i] & maskByte));
}
}
}
// Phase 9 plane-to-chunky derivation for jlTileSnap. Reads 8 plane
// bytes (1 byte per row x 8 rows) from each of 4 planes for the
// 8-pixel-aligned tile column at bx, then assembles 32 chunky bytes
// (4 per row x 8 rows, packed 2 px/byte high-then-low nibble) into
// On Amiga, jlTileT.pixels is opaque port-specific storage (cross-
// platform tile.c never reads it directly when s->pixels is NULL).
// We use those 32 bytes as 4 planes x 8 rows, plane-major:
// bytes [0..7] = plane 0, rows 0..7
// bytes [8..15] = plane 1, rows 0..7
// bytes [16..23] = plane 2, rows 0..7
// bytes [24..31] = plane 3, rows 0..7
// snap/paste then become 32 plain byte loads + stores -- no chunky
// <-> planar conversion at all. The previous c2p-based path paid
// 4 KB LUT lookups + bit shuffling per pixel; this is ~50x cheaper.
#define AMIGA_TILE_PLANE_STRIDE 8
static inline __attribute__((always_inline)) void amigaTileSnap(const jlSurfaceT *src, uint8_t bx, uint8_t by, uint8_t *chunkyOut) {
AmigaPlanarT *pd;
uint16_t rowBase;
uint8_t plane;
pd = (AmigaPlanarT *)src->portData;
if (pd == NULL) {
jlpGenericTileSnap(src, bx, by, chunkyOut);
return;
}
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
const uint8_t *p = pd->planes[plane] + rowBase;
uint8_t *q = chunkyOut + plane * AMIGA_TILE_PLANE_STRIDE;
q[0] = p[AMIGA_TILE_ROW_OFF(0)];
q[1] = p[AMIGA_TILE_ROW_OFF(1)];
q[2] = p[AMIGA_TILE_ROW_OFF(2)];
q[3] = p[AMIGA_TILE_ROW_OFF(3)];
q[4] = p[AMIGA_TILE_ROW_OFF(4)];
q[5] = p[AMIGA_TILE_ROW_OFF(5)];
q[6] = p[AMIGA_TILE_ROW_OFF(6)];
q[7] = p[AMIGA_TILE_ROW_OFF(7)];
}
}
static inline __attribute__((always_inline)) void amigaTilePaste(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *chunkyTile) {
AmigaPlanarT *pd;
uint8_t plane;
uint16_t rowBase;
pd = (AmigaPlanarT *)dst->portData;
if (pd == NULL) {
jlpGenericTilePaste(dst, bx, by, chunkyTile);
return;
}
/* jlTileT.pixels[] holds plane-major planar bytes (see
* jlpTileSnap header for layout). Paste = 32 byte stores
* with no chunky -> planar conversion. */
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
const uint8_t *q = chunkyTile + plane * AMIGA_TILE_PLANE_STRIDE;
uint8_t *p = pd->planes[plane] + rowBase;
p[AMIGA_TILE_ROW_OFF(0)] = q[0];
p[AMIGA_TILE_ROW_OFF(1)] = q[1];
p[AMIGA_TILE_ROW_OFF(2)] = q[2];
p[AMIGA_TILE_ROW_OFF(3)] = q[3];
p[AMIGA_TILE_ROW_OFF(4)] = q[4];
p[AMIGA_TILE_ROW_OFF(5)] = q[5];
p[AMIGA_TILE_ROW_OFF(6)] = q[6];
p[AMIGA_TILE_ROW_OFF(7)] = q[7];
}
}
// Planar monochrome paste. monoTile follows the cross-port mono
// contract (include/joey/tile.h + jlpGenericTilePasteMono): 32 chunky
// nibble-pair bytes, row-major, TILE_BYTES_PER_ROW bytes per row, two
// pixels per byte. A pixel renders fgColor when its source nibble is
// nonzero, bgColor when zero; the HIGH nibble is the LEFT pixel. Each
// row's 4 source bytes fold into an 8-bit shape mask (bit 7 =
// leftmost pixel, matching the planar bit order), then each plane k
// writes
// outPlaneK = (shape & maskFgK) | (~shape & maskBgK)
// where maskXK = $FF if (X & (1 << k)) else $00.
static inline __attribute__((always_inline)) void amigaTilePasteMono(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *monoTile, uint8_t fgColor, uint8_t bgColor) {
AmigaPlanarT *pd;
uint8_t shape[TILE_PIXELS_PER_SIDE];
uint8_t plane;
uint8_t row;
uint8_t col;
uint16_t rowBase;
pd = (AmigaPlanarT *)dst->portData;
if (pd == NULL) {
jlpGenericTilePasteMono(dst, bx, by, monoTile, fgColor, bgColor);
return;
}
// Fold each chunky nibble-pair row into one 1bpp shape byte.
for (row = 0; row < TILE_PIXELS_PER_SIDE; row++) {
uint8_t bits = 0u;
for (col = 0; col < TILE_BYTES_PER_ROW; col++) {
uint8_t srcByte = *monoTile++;
bits = (uint8_t)(bits << 2);
if (srcByte & 0xF0u) {
bits = (uint8_t)(bits | 0x02u);
}
if (srcByte & 0x0Fu) {
bits = (uint8_t)(bits | 0x01u);
}
}
shape[row] = bits;
}
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
uint8_t maskFg = (uint8_t)((fgColor & (1u << plane)) ? 0xFFu : 0x00u);
uint8_t maskBg = (uint8_t)((bgColor & (1u << plane)) ? 0xFFu : 0x00u);
uint8_t *p = pd->planes[plane] + rowBase;
for (row = 0; row < 8u; row++) {
uint8_t s = shape[row];
p[row * AMIGA_BYTES_PER_ROW] = (uint8_t)((uint8_t)(s & maskFg) | (uint8_t)((uint8_t)(~s) & maskBg));
}
}
}
#endif

286
src/amiga/hal.c
View file

@ -128,15 +128,11 @@ static bool gPrevAnyDirty = true;
// demo after the initial paint) leave both alone. MrgCop + LoadView + // demo after the initial paint) leave both alone. MrgCop + LoadView +
// WaitTOF is hundreds of milliseconds on a 7 MHz 68000, so skipping // WaitTOF is hundreds of milliseconds on a 7 MHz 68000, so skipping
// them on clean frames is a major win. // them on clean frames is a major win.
/* Long-aligned so memcmpLongs (uint32_t pointer compare) won't /* Change detection is the core gStageScbDirty / gStagePaletteDirty
* address-error on 68000. jlSurfaceT.scb/palette are at long-aligned * flags (surfaceInternal.h): the mutation APIs set them and
* offsets (8 and 208), so the source side is safe; these cached * updateCopperIfNeeded clears them after rebuilding, replacing a
* mirrors need the same property. */ * 712-byte cached-mirror long-compare per present (NATIVE-PERF
static uint8_t gCachedScb [SURFACE_HEIGHT] __attribute__((aligned(4))); * Phase 2 R9; the IIgs consumed the flags first). */
static uint16_t gCachedPalette[SURFACE_PALETTE_COUNT][SURFACE_COLORS_PER_PALETTE] __attribute__((aligned(4)));
static bool gCacheValid = false;
static bool paletteOrScbChanged(const jlSurfaceT *src);
// ----- Internal helpers (alphabetical) ----- // ----- Internal helpers (alphabetical) -----
@ -453,63 +449,25 @@ static void patchBplCopperPokes(UBYTE *planes[AMIGA_BITPLANES]) {
} }
/* Long-aligned compare. SCB is 200 bytes, palette is 16*16*2 = 512
* bytes; both gCached* are statically aligned and src->scb/palette
* sit at long-aligned offsets in jlSurfaceT. libnix memcmp walks
* byte-by-byte (~10 cyc/byte = ~7 ms for 712 bytes); a long-pointer
* inline compare drops that to ~2 ms, which dominates per-call
* overhead for tight stagePresentRect loops where there's nothing
* to actually present. Returns nonzero on first mismatch. */
static bool memcmpLongs(const void *a, const void *b, uint16_t bytes) {
const uint32_t *pa = (const uint32_t *)a;
const uint32_t *pb = (const uint32_t *)b;
uint16_t n = (uint16_t)(bytes >> 2);
while (n > 0u) {
if (*pa != *pb) {
return true;
}
pa++;
pb++;
n--;
}
return false;
}
// Returns true if the SCB table or palette RGB values differ from the
// last presented frame, or if no frame has been presented yet.
static bool paletteOrScbChanged(const jlSurfaceT *src) {
if (!gCacheValid) {
return true;
}
if (memcmpLongs(gCachedScb, src->scb, (uint16_t)sizeof(gCachedScb))) {
return true;
}
if (memcmpLongs(gCachedPalette, src->palette, (uint16_t)sizeof(gCachedPalette))) {
return true;
}
return false;
}
// Rebuild and install the user copper list only if the palette/SCB // Rebuild and install the user copper list only if the palette/SCB
// state visible to the display differs from what the surface carries // state visible to the display differs from what the surface carries
// now. On clean frames we skip the AllocMem + MrgCop + LoadView + // now. On clean frames we skip the AllocMem + MrgCop + LoadView +
// WaitTOF chain entirely. // WaitTOF chain entirely. `src` is always gStage (jlpPresent's
// contract), so the core dirty flags are the change signal; clear
// them only after rebuilding.
static uint32_t gCopperRebuildCount = 0; static uint32_t gCopperRebuildCount = 0;
static uint32_t gPresentCallCount = 0; static uint32_t gPresentCallCount = 0;
static void updateCopperIfNeeded(const jlSurfaceT *src) { static void updateCopperIfNeeded(const jlSurfaceT *src) {
if (!paletteOrScbChanged(src)) { if (!gStageScbDirty && !gStagePaletteDirty) {
return; return;
} }
gCopperRebuildCount++; gCopperRebuildCount++;
uploadFirstBandPalette(src); uploadFirstBandPalette(src);
buildCopperList(src); buildCopperList(src);
installCopperList(); installCopperList();
memcpy(gCachedScb, src->scb, sizeof(gCachedScb)); gStageScbDirty = false;
memcpy(gCachedPalette, src->palette, sizeof(gCachedPalette)); gStagePaletteDirty = false;
gCacheValid = true;
} }
@ -1143,115 +1101,6 @@ void jlpFillRect(jlSurfaceT *s, int16_t x, int16_t y, int16_t w, int16_t h, uint
} }
// Phase 5 planar dual-write for tile ops, fully planar after Phase 9
// dropped the chunky shadow. All tiles are 8-pixel aligned (8x8 blocks
// at multiples of 8), so plane writes are byte-aligned -- one plane
// byte per row, 8 rows per tile, no edge masks. Stride between rows
// in a plane is AMIGA_BYTES_PER_ROW (40).
void jlpTileFill(jlSurfaceT *s, uint8_t bx, uint8_t by, uint8_t colorIndex) {
AmigaPlanarT *pd;
uint16_t plane;
uint8_t fillByte;
uint8_t *p;
uint8_t row;
pd = (AmigaPlanarT *)s->portData;
if (pd == NULL) {
jlpGenericTileFill(s, bx, by, colorIndex);
return;
}
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
fillByte = ((colorIndex >> plane) & 1u) ? 0xFFu : 0x00u;
p = pd->planes[plane] + (uint16_t)by * 8u * AMIGA_BYTES_PER_ROW + bx;
for (row = 0; row < 8u; row++) {
*p = fillByte;
p += AMIGA_BYTES_PER_ROW;
}
}
}
void jlpTileCopy(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy) {
AmigaPlanarT *dstPd;
AmigaPlanarT *srcPd;
uint16_t plane;
uint8_t *dp;
const uint8_t *sp;
uint8_t row;
dstPd = (AmigaPlanarT *)dst->portData;
srcPd = (AmigaPlanarT *)src->portData;
if (dstPd == NULL || srcPd == NULL) {
jlpGenericTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy);
return;
}
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
dp = dstPd->planes[plane] + (uint16_t)dstBy * 8u * AMIGA_BYTES_PER_ROW + dstBx;
sp = srcPd->planes[plane] + (uint16_t)srcBy * 8u * AMIGA_BYTES_PER_ROW + srcBx;
for (row = 0; row < 8u; row++) {
*dp = *sp;
dp += AMIGA_BYTES_PER_ROW;
sp += AMIGA_BYTES_PER_ROW;
}
}
}
// Pure-planar masked copy. For each row of the 8x8 tile, read 4 src
// plane bytes; compute a per-pixel "non-transparent" mask via XOR
// against the transparent index's per-plane bit pattern (a pixel
// matches transparent IFF all 4 plane bits match transparent's 4
// bits = OR of 4 XOR'd bytes is 0 in that bit). Then for each plane,
// dst = (dst & ~mask) | (src & mask) -- copy src bits at mask-set
// positions, preserve dst bits elsewhere.
void jlpTileCopyMasked(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy, uint8_t transparent) {
AmigaPlanarT *dstPd;
AmigaPlanarT *srcPd;
uint8_t transBitByte[AMIGA_BITPLANES];
uint16_t i;
uint8_t row;
uint16_t srcByteOff;
uint16_t dstByteOff;
uint8_t srcPlaneBytes[AMIGA_BITPLANES];
uint8_t maskByte;
dstPd = (AmigaPlanarT *)dst->portData;
srcPd = (AmigaPlanarT *)src->portData;
if (dstPd == NULL || srcPd == NULL) {
jlpGenericTileCopyMasked(dst, dstBx, dstBy, src, srcBx, srcBy, transparent);
return;
}
transparent = (uint8_t)(transparent & 0x0Fu);
/* Per-plane "all bits set if transparent's bit at this plane is 1
* else all 0" -- so XOR gives bit set where pixel differs from
* transparent in that plane. */
for (i = 0; i < AMIGA_BITPLANES; i++) {
transBitByte[i] = ((transparent >> i) & 1u) ? 0xFFu : 0x00u;
}
for (row = 0; row < 8u; row++) {
srcByteOff = (uint16_t)((uint16_t)srcBy * 8u + row) * AMIGA_BYTES_PER_ROW + srcBx;
dstByteOff = (uint16_t)((uint16_t)dstBy * 8u + row) * AMIGA_BYTES_PER_ROW + dstBx;
srcPlaneBytes[0] = srcPd->planes[0][srcByteOff];
srcPlaneBytes[1] = srcPd->planes[1][srcByteOff];
srcPlaneBytes[2] = srcPd->planes[2][srcByteOff];
srcPlaneBytes[3] = srcPd->planes[3][srcByteOff];
/* maskByte: bit set where pixel differs from transparent in
* ANY plane -- i.e., where the pixel is non-transparent. */
maskByte = (uint8_t)((srcPlaneBytes[0] ^ transBitByte[0])
| (srcPlaneBytes[1] ^ transBitByte[1])
| (srcPlaneBytes[2] ^ transBitByte[2])
| (srcPlaneBytes[3] ^ transBitByte[3]));
for (i = 0; i < AMIGA_BITPLANES; i++) {
uint8_t existing = dstPd->planes[i][dstByteOff];
dstPd->planes[i][dstByteOff] = (uint8_t)((existing & (uint8_t)~maskByte)
| (srcPlaneBytes[i] & maskByte));
}
}
}
// Phase 9 sprite save/restore plane-backup hooks. // Phase 9 sprite save/restore plane-backup hooks.
// Sprite save at (x, y, w, h) records the destination region into the // Sprite save at (x, y, w, h) records the destination region into the
// caller's backup buffer; restore writes it back. x and w are 2-pixel // caller's backup buffer; restore writes it back. x and w are 2-pixel
@ -1581,119 +1430,6 @@ void jlpSpriteDrawPlanes(jlSurfaceT *s, const jlSpriteT *sp, int16_t x, int16_t
} }
// Phase 9 plane-to-chunky derivation for jlTileSnap. Reads 8 plane
// bytes (1 byte per row x 8 rows) from each of 4 planes for the
// 8-pixel-aligned tile column at bx, then assembles 32 chunky bytes
// (4 per row x 8 rows, packed 2 px/byte high-then-low nibble) into
// On Amiga, jlTileT.pixels is opaque port-specific storage (cross-
// platform tile.c never reads it directly when s->pixels is NULL).
// We use those 32 bytes as 4 planes x 8 rows, plane-major:
// bytes [0..7] = plane 0, rows 0..7
// bytes [8..15] = plane 1, rows 0..7
// bytes [16..23] = plane 2, rows 0..7
// bytes [24..31] = plane 3, rows 0..7
// snap/paste then become 32 plain byte loads + stores -- no chunky
// <-> planar conversion at all. The previous c2p-based path paid
// 4 KB LUT lookups + bit shuffling per pixel; this is ~50x cheaper.
#define AMIGA_TILE_PLANE_STRIDE 8
void jlpTileSnap(const jlSurfaceT *src, uint8_t bx, uint8_t by, uint8_t *chunkyOut) {
AmigaPlanarT *pd;
uint16_t row;
uint16_t rowBase;
uint8_t plane;
pd = (AmigaPlanarT *)src->portData;
if (pd == NULL) {
jlpGenericTileSnap(src, bx, by, chunkyOut);
return;
}
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
const uint8_t *p = pd->planes[plane] + rowBase;
uint8_t *q = chunkyOut + plane * AMIGA_TILE_PLANE_STRIDE;
for (row = 0; row < 8u; row++) {
q[row] = p[row * AMIGA_BYTES_PER_ROW];
}
}
}
void jlpTilePaste(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *chunkyTile) {
AmigaPlanarT *pd;
uint8_t row;
uint8_t plane;
uint16_t rowBase;
pd = (AmigaPlanarT *)dst->portData;
if (pd == NULL) {
jlpGenericTilePaste(dst, bx, by, chunkyTile);
return;
}
/* jlTileT.pixels[] holds plane-major planar bytes (see
* jlpTileSnap header for layout). Paste = 32 byte stores
* with no chunky -> planar conversion. */
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
const uint8_t *q = chunkyTile + plane * AMIGA_TILE_PLANE_STRIDE;
uint8_t *p = pd->planes[plane] + rowBase;
for (row = 0; row < 8u; row++) {
p[row * AMIGA_BYTES_PER_ROW] = q[row];
}
}
}
// Planar monochrome paste. monoTile follows the cross-port mono
// contract (include/joey/tile.h + jlpGenericTilePasteMono): 32 chunky
// nibble-pair bytes, row-major, TILE_BYTES_PER_ROW bytes per row, two
// pixels per byte. A pixel renders fgColor when its source nibble is
// nonzero, bgColor when zero; the HIGH nibble is the LEFT pixel. Each
// row's 4 source bytes fold into an 8-bit shape mask (bit 7 =
// leftmost pixel, matching the planar bit order), then each plane k
// writes
// outPlaneK = (shape & maskFgK) | (~shape & maskBgK)
// where maskXK = $FF if (X & (1 << k)) else $00.
void jlpTilePasteMono(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *monoTile, uint8_t fgColor, uint8_t bgColor) {
AmigaPlanarT *pd;
uint8_t shape[TILE_PIXELS_PER_SIDE];
uint8_t plane;
uint8_t row;
uint8_t col;
uint16_t rowBase;
pd = (AmigaPlanarT *)dst->portData;
if (pd == NULL) {
jlpGenericTilePasteMono(dst, bx, by, monoTile, fgColor, bgColor);
return;
}
// Fold each chunky nibble-pair row into one 1bpp shape byte.
for (row = 0; row < TILE_PIXELS_PER_SIDE; row++) {
uint8_t bits = 0u;
for (col = 0; col < TILE_BYTES_PER_ROW; col++) {
uint8_t srcByte = *monoTile++;
bits = (uint8_t)(bits << 2);
if (srcByte & 0xF0u) {
bits = (uint8_t)(bits | 0x02u);
}
if (srcByte & 0x0Fu) {
bits = (uint8_t)(bits | 0x01u);
}
}
shape[row] = bits;
}
rowBase = (uint16_t)((uint16_t)by * 8u) * AMIGA_BYTES_PER_ROW + bx;
for (plane = 0; plane < AMIGA_BITPLANES; plane++) {
uint8_t maskFg = (uint8_t)((fgColor & (1u << plane)) ? 0xFFu : 0x00u);
uint8_t maskBg = (uint8_t)((bgColor & (1u << plane)) ? 0xFFu : 0x00u);
uint8_t *p = pd->planes[plane] + rowBase;
for (row = 0; row < 8u; row++) {
uint8_t s = shape[row];
p[row * AMIGA_BYTES_PER_ROW] = (uint8_t)((uint8_t)(s & maskFg) | (uint8_t)((uint8_t)(~s) & maskBg));
}
}
}
// Phase 3 planar dual-write for jlSurfaceCopy: 4 plane memcpys after // Phase 3 planar dual-write for jlSurfaceCopy: 4 plane memcpys after
// the cross-platform chunky pixel memcpy. Both src and dst planes // the cross-platform chunky pixel memcpy. Both src and dst planes
// are off-screen shadow buffers; the displayed gPlanes[] is updated // are off-screen shadow buffers; the displayed gPlanes[] is updated

343
src/atarist/hal.c
View file

@ -44,9 +44,9 @@
// Word-interleaved ST planar uses the same 160 bytes/scanline as our // Word-interleaved ST planar uses the same 160 bytes/scanline as our
// chunky source, but organized as 20 groups of 4 words per scanline, // chunky source, but organized as 20 groups of 4 words per scanline,
// with each word holding the 16 one-bit samples for one bitplane. // with each word holding the 16 one-bit samples for one bitplane.
#define ST_BYTES_PER_ROW 160 // (ST_BYTES_PER_ROW and ST_BYTES_PER_GROUP live in stPlanar.h so the
// stTile.h inlines can see them; the rest are hal-private.)
#define ST_GROUPS_PER_ROW 20 #define ST_GROUPS_PER_ROW 20
#define ST_BYTES_PER_GROUP 8 // 4 plane words back-to-back
#define ST_PLANE_OFF_BYTES 2 // step between adjacent plane words within a group #define ST_PLANE_OFF_BYTES 2 // step between adjacent plane words within a group
#define ST_BITPLANES 4 #define ST_BITPLANES 4
#define ST_PLANAR_SIZE (ST_BYTES_PER_ROW * SURFACE_HEIGHT) #define ST_PLANAR_SIZE (ST_BYTES_PER_ROW * SURFACE_HEIGHT)
@ -184,7 +184,6 @@ static long writePrevPaletteRegs(void);
static __attribute__((interrupt_handler)) void timerBIsr(void); static __attribute__((interrupt_handler)) void timerBIsr(void);
static __attribute__((interrupt_handler)) void vblIsr(void); static __attribute__((interrupt_handler)) void vblIsr(void);
static void buildTransitions(const jlSurfaceT *src); static void buildTransitions(const jlSurfaceT *src);
static bool paletteOrScbChanged(const jlSurfaceT *src);
static void refreshPaletteStateIfNeeded(const jlSurfaceT *src); static void refreshPaletteStateIfNeeded(const jlSurfaceT *src);
// ----- Module state ----- // ----- Module state -----
@ -271,15 +270,14 @@ static volatile uint16_t gLastBandCount = 0;
static void (*gOldVblVec)(void) = NULL; static void (*gOldVblVec)(void) = NULL;
static void (*gOldTimerBVec)(void) = NULL; static void (*gOldTimerBVec)(void) = NULL;
// Cached SCB + palette from the last present. flattenScbPalettes runs // Palette/SCB change detection is the core gStageScbDirty /
// 200 * 16 quantize conversions and buildTransitions rescans the full // gStagePaletteDirty flags (surfaceInternal.h) -- the mutation APIs
// SCB; neither is cheap on a 7 MHz 68000. In the typical game loop // set them and refreshPaletteStateIfNeeded clears them after
// (and every frame of the keys demo after the initial paint) SCB and // rebuilding, replacing a 712-byte cached-mirror memcmp per present
// palette never change, so caching and skipping those passes keeps // (NATIVE-PERF Phase 2 R9; the IIgs consumed the flags first).
// rect presents down to just the screen blit. // flattenScbPalettes runs 200 * 16 quantize conversions and
static uint8_t gCachedScb [SURFACE_HEIGHT]; // buildTransitions rescans the full SCB; neither is cheap on a 7 MHz
static uint16_t gCachedPalette[SURFACE_PALETTE_COUNT][SURFACE_COLORS_PER_PALETTE]; // 68000, and in the typical game loop SCB and palette never change.
static bool gCacheValid = false;
// ----- Internal helpers (alphabetical) ----- // ----- Internal helpers (alphabetical) -----
@ -333,34 +331,20 @@ static void flattenScbPalettes(const jlSurfaceT *src) {
} }
// Returns true if SCB or palette values differ from the last present.
static bool paletteOrScbChanged(const jlSurfaceT *src) {
if (!gCacheValid) {
return true;
}
if (memcmp(gCachedScb, src->scb, sizeof(gCachedScb)) != 0) {
return true;
}
if (memcmp(gCachedPalette, src->palette, sizeof(gCachedPalette)) != 0) {
return true;
}
return false;
}
// Rebuild the per-line palette table and band-transition table only // Rebuild the per-line palette table and band-transition table only
// when the SCB/palette state has actually changed. Both are hot -- the // when the SCB/palette state has actually changed. Both are hot -- the
// flatten pass runs 3200 palette entries through quantization -- so // flatten pass runs 3200 palette entries through quantization -- so
// skipping them on clean frames dominates rect-present timing. // skipping them on clean frames dominates rect-present timing. `src`
// is always gStage (jlpPresent's contract), so the core dirty flags
// are the change signal; clear them only after rebuilding.
static void refreshPaletteStateIfNeeded(const jlSurfaceT *src) { static void refreshPaletteStateIfNeeded(const jlSurfaceT *src) {
if (!paletteOrScbChanged(src)) { if (!gStageScbDirty && !gStagePaletteDirty) {
return; return;
} }
flattenScbPalettes(src); flattenScbPalettes(src);
buildTransitions(src); buildTransitions(src);
memcpy(gCachedScb, src->scb, sizeof(gCachedScb)); gStageScbDirty = false;
memcpy(gCachedPalette, src->palette, sizeof(gCachedPalette)); gStagePaletteDirty = false;
gCacheValid = true;
} }
@ -961,7 +945,6 @@ extern void surface68kStFillCircle(uint8_t *base, uint16_t cx, uint16_t cy, uint
extern void surface68kStFillRectSingleGroup(uint8_t *firstGroupPtr, uint16_t mask, uint16_t h, uint8_t color); extern void surface68kStFillRectSingleGroup(uint8_t *firstGroupPtr, uint16_t mask, uint16_t h, uint8_t color);
extern void surface68kStFillRectMulti(uint8_t *base, int16_t x, int16_t y, uint16_t w, uint16_t h, uint8_t color); extern void surface68kStFillRectMulti(uint8_t *base, int16_t x, int16_t y, uint16_t w, uint16_t h, uint8_t color);
extern void surface68kStLongFill(uint8_t *dst, uint16_t numGroups, uint32_t loLong, uint32_t hiLong); extern void surface68kStLongFill(uint8_t *dst, uint16_t numGroups, uint32_t loLong, uint32_t hiLong);
extern void surface68kStTileFill8x8(uint8_t *firstGroupPtr, uint16_t mask, uint8_t color);
extern void surface68kStSprite16x16Save(uint8_t *base, uint16_t x, uint16_t y, uint8_t *dstBuf); extern void surface68kStSprite16x16Save(uint8_t *base, uint16_t x, uint16_t y, uint8_t *dstBuf);
extern void surface68kStSprite16x16Restore(uint8_t *base, uint16_t x, uint16_t y, const uint8_t *srcBuf); extern void surface68kStSprite16x16Restore(uint8_t *base, uint16_t x, uint16_t y, const uint8_t *srcBuf);
extern void surface68kStSpriteSaveByteAligned(uint8_t *base, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t *dstPlaneBytes); extern void surface68kStSpriteSaveByteAligned(uint8_t *base, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t *dstPlaneBytes);
@ -1344,300 +1327,6 @@ void jlpSurfaceCopyPlanes(jlSurfaceT *dst, const jlSurfaceT *src) {
// every callsite folds the 4-plane RMW into its body. // every callsite folds the 4-plane RMW into its body.
// Phase 5 tile ops. 8x8 tiles at byte position (bx, by) start at
// pixel (bx*8, by*8). 8 pixels wide always covers exactly half a
// 16-pixel group: high half (bits 15..8) when bx is even, low half
// (bits 7..0) when bx is odd. Per-row work is 4 plane half-word RMWs.
void jlpTileFill(jlSurfaceT *s, uint8_t bx, uint8_t by, uint8_t colorIndex) {
StPlanarT *pd;
uint16_t group;
uint16_t halfMask;
uint8_t *gp;
// Core jlTileFill already proved s != NULL and clipped bx/by; only
// the non-planar (offscreen, no portData) fallback needs handling.
pd = (StPlanarT *)s->portData;
if (pd == NULL) {
jlpGenericTileFill(s, bx, by, colorIndex);
return;
}
group = (uint16_t)((uint16_t)bx >> 1);
halfMask = ((bx & 1u) == 0u) ? 0xFF00u : 0x00FFu;
gp = pd->base + (uint16_t)by * 8u * ST_BYTES_PER_ROW + group * ST_BYTES_PER_GROUP;
/* Phase 10 final: specialized 8x8 unrolled tile-fill skips the
* generic FRG_LOOP's per-row subq+bne overhead. */
surface68kStTileFill8x8(gp, halfMask, colorIndex);
}
// Phase 10: tile paste/snap reuse the asm sprite save/restore
// helpers -- identical per-row work patterns at byte-aligned
// positions. Width 8 = single tile column = single half-group
// write per plane. The asm walker handles 8 rows just as well
// as a sprite's variable height.
void jlpTilePaste(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *chunkyTile) {
StPlanarT *pd;
uint16_t group;
uint8_t *dstAddr;
int16_t row;
if (dst->portData == NULL) {
jlpGenericTilePaste(dst, bx, by, chunkyTile);
return;
}
pd = (StPlanarT *)dst->portData;
/* Phase 10.5: jlTileT.pixels holds plane-major bytes (4 plane bytes
* per row * 8 rows = 32 bytes). Direct byte copy to the planar
* buffer; no chunky <-> planar conversion. Mirrors the sibling
* jlpTileCopy pattern but reads from the contiguous tile
* buffer. Drops the asm-walker entry/exit overhead. */
group = (uint16_t)((uint16_t)bx >> 1);
dstAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
(void)row;
#define ST_TILE_PASTE_ROW \
do { \
dstAddr[0] = chunkyTile[0]; \
dstAddr[2] = chunkyTile[1]; \
dstAddr[4] = chunkyTile[2]; \
dstAddr[6] = chunkyTile[3]; \
dstAddr += ST_BYTES_PER_ROW; \
chunkyTile += TILE_BYTES_PER_ROW; \
} while (0)
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
#undef ST_TILE_PASTE_ROW
}
// Planar monochrome paste. monoTile follows the cross-port mono
// contract (include/joey/tile.h + jlpGenericTilePasteMono): 32 chunky
// nibble-pair bytes, row-major, TILE_BYTES_PER_ROW bytes per row, two
// pixels per byte. A pixel renders fgColor when its source nibble is
// nonzero, bgColor when zero; the HIGH nibble is the LEFT pixel. Each
// row's 4 source bytes fold into an 8-bit shape mask (bit 7 = leftmost
// pixel, matching the planar bit order), then each plane k writes
// outPlaneK = (shape & maskFgK) | (~shape & maskBgK)
// at dstAddr + k*2 inside the 16-pixel group (4 plane words = 8 bytes
// per group). bx odd selects the second byte of each plane word (the
// low / right 8 pixels of the group).
void jlpTilePasteMono(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *monoTile, uint8_t fgColor, uint8_t bgColor) {
StPlanarT *pd;
uint16_t group;
uint8_t *dstAddr;
uint8_t row;
uint8_t col;
uint8_t plane;
uint8_t masksFg[4];
uint8_t masksBg[4];
if (dst->portData == NULL) {
jlpGenericTilePasteMono(dst, bx, by, monoTile, fgColor, bgColor);
return;
}
pd = (StPlanarT *)dst->portData;
for (plane = 0u; plane < 4u; plane++) {
masksFg[plane] = (uint8_t)((fgColor & (1u << plane)) ? 0xFFu : 0x00u);
masksBg[plane] = (uint8_t)((bgColor & (1u << plane)) ? 0xFFu : 0x00u);
}
group = (uint16_t)((uint16_t)bx >> 1);
dstAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
for (row = 0u; row < TILE_PIXELS_PER_SIDE; row++) {
uint8_t shape = 0u;
for (col = 0u; col < TILE_BYTES_PER_ROW; col++) {
uint8_t srcByte = *monoTile++;
shape = (uint8_t)(shape << 2);
if (srcByte & 0xF0u) {
shape = (uint8_t)(shape | 0x02u);
}
if (srcByte & 0x0Fu) {
shape = (uint8_t)(shape | 0x01u);
}
}
dstAddr[0] = (uint8_t)((uint8_t)(shape & masksFg[0]) |
(uint8_t)((uint8_t)(~shape) & masksBg[0]));
dstAddr[2] = (uint8_t)((uint8_t)(shape & masksFg[1]) |
(uint8_t)((uint8_t)(~shape) & masksBg[1]));
dstAddr[4] = (uint8_t)((uint8_t)(shape & masksFg[2]) |
(uint8_t)((uint8_t)(~shape) & masksBg[2]));
dstAddr[6] = (uint8_t)((uint8_t)(shape & masksFg[3]) |
(uint8_t)((uint8_t)(~shape) & masksBg[3]));
dstAddr += ST_BYTES_PER_ROW;
}
}
void jlpTileSnap(const jlSurfaceT *src, uint8_t bx, uint8_t by, uint8_t *chunkyOut) {
const StPlanarT *pd;
uint16_t group;
const uint8_t *srcAddr;
int16_t row;
if (src->portData == NULL) {
jlpGenericTileSnap(src, bx, by, chunkyOut);
return;
}
pd = (const StPlanarT *)src->portData;
/* Phase 10.5: write plane-major bytes to jlTileT (4 per row * 8 rows). */
group = (uint16_t)((uint16_t)bx >> 1);
srcAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
(void)row;
#define ST_TILE_SNAP_ROW \
do { \
chunkyOut[0] = srcAddr[0]; \
chunkyOut[1] = srcAddr[2]; \
chunkyOut[2] = srcAddr[4]; \
chunkyOut[3] = srcAddr[6]; \
srcAddr += ST_BYTES_PER_ROW; \
chunkyOut += TILE_BYTES_PER_ROW; \
} while (0)
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
#undef ST_TILE_SNAP_ROW
}
// Phase 10: direct planar->planar tile copy. Each tile occupies one
// half-byte of one plane word per plane per row (8 rows total).
// We just byte-copy 4 plane bytes per row -- no chunky scratch, no
// bit transpose, no LUT. ~640 cyc per tile vs ~5000 cyc for the
// snap+paste path.
void jlpTileCopy(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy) {
StPlanarT *dstPd;
const StPlanarT *srcPd;
uint8_t *dstAddr;
const uint8_t *srcAddr;
uint16_t srcGroup;
uint16_t dstGroup;
int16_t row;
if (dst->portData == NULL || src->portData == NULL) {
jlpGenericTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy);
return;
}
dstPd = (StPlanarT *)dst->portData;
srcPd = (const StPlanarT *)src->portData;
srcGroup = (uint16_t)((uint16_t)srcBx >> 1);
dstGroup = (uint16_t)((uint16_t)dstBx >> 1);
srcAddr = srcPd->base
+ (uint16_t)srcBy * 8u * ST_BYTES_PER_ROW
+ srcGroup * ST_BYTES_PER_GROUP
+ (uint16_t)(srcBx & 1u);
dstAddr = dstPd->base
+ (uint16_t)dstBy * 8u * ST_BYTES_PER_ROW
+ dstGroup * ST_BYTES_PER_GROUP
+ (uint16_t)(dstBx & 1u);
/* gcc-mint -O2 does NOT unroll the 8-iter byte-copy loop,
* leaving cmpl + bnes loop overhead per row. Manual unroll
* drops ~150 cyc/call. (void)row keeps the unused decl quiet. */
(void)row;
#define ST_TILE_COPY_ROW \
do { \
dstAddr[0] = srcAddr[0]; \
dstAddr[2] = srcAddr[2]; \
dstAddr[4] = srcAddr[4]; \
dstAddr[6] = srcAddr[6]; \
srcAddr += ST_BYTES_PER_ROW; \
dstAddr += ST_BYTES_PER_ROW; \
} while (0)
ST_TILE_COPY_ROW; /* row 0 */
ST_TILE_COPY_ROW; /* row 1 */
ST_TILE_COPY_ROW; /* row 2 */
ST_TILE_COPY_ROW; /* row 3 */
ST_TILE_COPY_ROW; /* row 4 */
ST_TILE_COPY_ROW; /* row 5 */
ST_TILE_COPY_ROW; /* row 6 */
ST_TILE_COPY_ROW; /* row 7 */
#undef ST_TILE_COPY_ROW
}
void jlpTileCopyMasked(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy, uint8_t transparent) {
StPlanarT *dstPd;
uint8_t scratch[TILE_BYTES];
int16_t row;
uint16_t dstX0;
uint16_t dstY0;
uint16_t group;
uint16_t halfOff;
uint8_t *dstByte;
uint8_t p0;
uint8_t p1;
uint8_t p2;
uint8_t p3;
uint8_t xK0;
uint8_t xK1;
uint8_t xK2;
uint8_t xK3;
uint8_t mask;
uint8_t notMask;
if (dst->portData == NULL) {
jlpGenericTileCopyMasked(dst, dstBx, dstBy, src, srcBx, srcBy, transparent);
return;
}
dstPd = (StPlanarT *)dst->portData;
/* Phase 10.5: bulk-plane fast path. scratch holds plane-major bytes
* (4 plane bytes per row * 8 rows). For each row, build a "non-
* transparent" mask = OR of (plane_byte XOR replicated transparent
* bit) -- 1s where the source pixel != transparent. Then 4 byte
* RMWs (one per plane) write the row at byte-aligned dst.
*
* For transparent=0 this collapses to mask = p0|p1|p2|p3.
* Replaces the prior 64-iteration per-pixel SetPixel walker. */
jlpTileSnap(src, srcBx, srcBy, scratch);
dstX0 = (uint16_t)((uint16_t)dstBx * TILE_PIXELS_PER_SIDE);
dstY0 = (uint16_t)((uint16_t)dstBy * TILE_PIXELS_PER_SIDE);
group = (uint16_t)(dstX0 >> 4);
halfOff = (uint16_t)((dstX0 & 8u) >> 3u);
dstByte = dstPd->base + dstY0 * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP + halfOff;
xK0 = (transparent & 1u) ? 0xFFu : 0u;
xK1 = (transparent & 2u) ? 0xFFu : 0u;
xK2 = (transparent & 4u) ? 0xFFu : 0u;
xK3 = (transparent & 8u) ? 0xFFu : 0u;
for (row = 0; row < TILE_PIXELS_PER_SIDE; row++) {
p0 = scratch[row * 4 + 0];
p1 = scratch[row * 4 + 1];
p2 = scratch[row * 4 + 2];
p3 = scratch[row * 4 + 3];
mask = (uint8_t)((p0 ^ xK0) | (p1 ^ xK1) | (p2 ^ xK2) | (p3 ^ xK3));
if (mask != 0u) {
notMask = (uint8_t)~mask;
dstByte[0] = (uint8_t)((dstByte[0] & notMask) | (p0 & mask));
dstByte[2] = (uint8_t)((dstByte[2] & notMask) | (p1 & mask));
dstByte[4] = (uint8_t)((dstByte[4] & notMask) | (p2 & mask));
dstByte[6] = (uint8_t)((dstByte[6] & notMask) | (p3 & mask));
}
dstByte += ST_BYTES_PER_ROW;
}
}
// Phase 10 fast path: byte-aligned, fully-on-surface sprite draw. // Phase 10 fast path: byte-aligned, fully-on-surface sprite draw.
// Builds 4 plane bytes + 1 opacity byte from each tile-column row // Builds 4 plane bytes + 1 opacity byte from each tile-column row
// in one pass, then does 4 word RMWs per group half. ~7x faster // in one pass, then does 4 word RMWs per group half. ~7x faster

5
src/atarist/stPlanar.h
View file

@ -12,6 +12,11 @@
#include "surfaceInternal.h" #include "surfaceInternal.h"
// Interleaved-layout strides, shared with the stTile.h inlines:
// 160 bytes per scanline as 20 groups of 4 plane words (8 bytes).
#define ST_BYTES_PER_ROW 160
#define ST_BYTES_PER_GROUP 8 // 4 plane words back-to-back
// jlSurfaceT.portData points to this on the ST. ST has word-interleaved // jlSurfaceT.portData points to this on the ST. ST has word-interleaved
// planar: ONE 32000-byte buffer per surface holds all 4 planes packed // planar: ONE 32000-byte buffer per surface holds all 4 planes packed
// 8 bytes per 16-pixel group. Per-scanline layout (160 bytes) is 20 // 8 bytes per 16-pixel group. Per-scanline layout (160 bytes) is 20

315
src/atarist/stTile.h Normal file
View file

@ -0,0 +1,315 @@
// Atari ST tile ops as always-inline functions (NATIVE-PERF Phase 2
// R4a). Bodies moved verbatim from src/atarist/hal.c so the public
// wrappers in src/core/tile.c inline them, deleting the second full
// cdecl call layer (~130-190 cycles/op on the 68000). The jlpTile*
// dispatch names are macro-aliased to these in port.h, which also
// #includes this header at its tail -- AFTER the jlpGenericTile*
// prototypes the portData == NULL fallbacks call. Do not include this
// header directly; it comes with port.h on the ST.
#ifndef JOEY_ST_TILE_H
#define JOEY_ST_TILE_H
#include <stdint.h>
#include <stdbool.h>
#include "joey/tile.h"
#include "stPlanar.h"
// 68k asm entry (surface68kSt.s side): fills one 8-px half-group in
// all 4 planes. Declared here because stTileFill is its only caller.
extern void surface68kStTileFill8x8(uint8_t *firstGroupPtr, uint16_t mask, uint8_t color);
// Phase 5 tile ops. 8x8 tiles at byte position (bx, by) start at
// pixel (bx*8, by*8). 8 pixels wide always covers exactly half a
// 16-pixel group: high half (bits 15..8) when bx is even, low half
// (bits 7..0) when bx is odd. Per-row work is 4 plane half-word RMWs.
static inline __attribute__((always_inline)) void stTileFill(jlSurfaceT *s, uint8_t bx, uint8_t by, uint8_t colorIndex) {
StPlanarT *pd;
uint16_t group;
uint16_t halfMask;
uint8_t *gp;
// Core jlTileFill already proved s != NULL and clipped bx/by; only
// the non-planar (offscreen, no portData) fallback needs handling.
pd = (StPlanarT *)s->portData;
if (pd == NULL) {
jlpGenericTileFill(s, bx, by, colorIndex);
return;
}
group = (uint16_t)((uint16_t)bx >> 1);
halfMask = ((bx & 1u) == 0u) ? 0xFF00u : 0x00FFu;
gp = pd->base + (uint16_t)by * 8u * ST_BYTES_PER_ROW + group * ST_BYTES_PER_GROUP;
/* Phase 10 final: specialized 8x8 unrolled tile-fill skips the
* generic FRG_LOOP's per-row subq+bne overhead. */
surface68kStTileFill8x8(gp, halfMask, colorIndex);
}
// Phase 10: tile paste/snap reuse the asm sprite save/restore
// helpers -- identical per-row work patterns at byte-aligned
// positions. Width 8 = single tile column = single half-group
// write per plane. The asm walker handles 8 rows just as well
// as a sprite's variable height.
static inline __attribute__((always_inline)) void stTilePaste(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *chunkyTile) {
StPlanarT *pd;
uint16_t group;
uint8_t *dstAddr;
int16_t row;
if (dst->portData == NULL) {
jlpGenericTilePaste(dst, bx, by, chunkyTile);
return;
}
pd = (StPlanarT *)dst->portData;
/* Phase 10.5: jlTileT.pixels holds plane-major bytes (4 plane bytes
* per row * 8 rows = 32 bytes). Direct byte copy to the planar
* buffer; no chunky <-> planar conversion. Mirrors the sibling
* jlpTileCopy pattern but reads from the contiguous tile
* buffer. Drops the asm-walker entry/exit overhead. */
group = (uint16_t)((uint16_t)bx >> 1);
dstAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
(void)row;
#define ST_TILE_PASTE_ROW \
do { \
dstAddr[0] = chunkyTile[0]; \
dstAddr[2] = chunkyTile[1]; \
dstAddr[4] = chunkyTile[2]; \
dstAddr[6] = chunkyTile[3]; \
dstAddr += ST_BYTES_PER_ROW; \
chunkyTile += TILE_BYTES_PER_ROW; \
} while (0)
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
ST_TILE_PASTE_ROW;
#undef ST_TILE_PASTE_ROW
}
// Planar monochrome paste. monoTile follows the cross-port mono
// contract (include/joey/tile.h + jlpGenericTilePasteMono): 32 chunky
// nibble-pair bytes, row-major, TILE_BYTES_PER_ROW bytes per row, two
// pixels per byte. A pixel renders fgColor when its source nibble is
// nonzero, bgColor when zero; the HIGH nibble is the LEFT pixel. Each
// row's 4 source bytes fold into an 8-bit shape mask (bit 7 = leftmost
// pixel, matching the planar bit order), then each plane k writes
// outPlaneK = (shape & maskFgK) | (~shape & maskBgK)
// at dstAddr + k*2 inside the 16-pixel group (4 plane words = 8 bytes
// per group). bx odd selects the second byte of each plane word (the
// low / right 8 pixels of the group).
static inline __attribute__((always_inline)) void stTilePasteMono(jlSurfaceT *dst, uint8_t bx, uint8_t by, const uint8_t *monoTile, uint8_t fgColor, uint8_t bgColor) {
StPlanarT *pd;
uint16_t group;
uint8_t *dstAddr;
uint8_t row;
uint8_t col;
uint8_t plane;
uint8_t masksFg[4];
uint8_t masksBg[4];
if (dst->portData == NULL) {
jlpGenericTilePasteMono(dst, bx, by, monoTile, fgColor, bgColor);
return;
}
pd = (StPlanarT *)dst->portData;
for (plane = 0u; plane < 4u; plane++) {
masksFg[plane] = (uint8_t)((fgColor & (1u << plane)) ? 0xFFu : 0x00u);
masksBg[plane] = (uint8_t)((bgColor & (1u << plane)) ? 0xFFu : 0x00u);
}
group = (uint16_t)((uint16_t)bx >> 1);
dstAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
for (row = 0u; row < TILE_PIXELS_PER_SIDE; row++) {
uint8_t shape = 0u;
for (col = 0u; col < TILE_BYTES_PER_ROW; col++) {
uint8_t srcByte = *monoTile++;
shape = (uint8_t)(shape << 2);
if (srcByte & 0xF0u) {
shape = (uint8_t)(shape | 0x02u);
}
if (srcByte & 0x0Fu) {
shape = (uint8_t)(shape | 0x01u);
}
}
dstAddr[0] = (uint8_t)((uint8_t)(shape & masksFg[0]) |
(uint8_t)((uint8_t)(~shape) & masksBg[0]));
dstAddr[2] = (uint8_t)((uint8_t)(shape & masksFg[1]) |
(uint8_t)((uint8_t)(~shape) & masksBg[1]));
dstAddr[4] = (uint8_t)((uint8_t)(shape & masksFg[2]) |
(uint8_t)((uint8_t)(~shape) & masksBg[2]));
dstAddr[6] = (uint8_t)((uint8_t)(shape & masksFg[3]) |
(uint8_t)((uint8_t)(~shape) & masksBg[3]));
dstAddr += ST_BYTES_PER_ROW;
}
}
static inline __attribute__((always_inline)) void stTileSnap(const jlSurfaceT *src, uint8_t bx, uint8_t by, uint8_t *chunkyOut) {
const StPlanarT *pd;
uint16_t group;
const uint8_t *srcAddr;
int16_t row;
if (src->portData == NULL) {
jlpGenericTileSnap(src, bx, by, chunkyOut);
return;
}
pd = (const StPlanarT *)src->portData;
/* Phase 10.5: write plane-major bytes to jlTileT (4 per row * 8 rows). */
group = (uint16_t)((uint16_t)bx >> 1);
srcAddr = pd->base
+ (uint16_t)by * 8u * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP
+ (uint16_t)(bx & 1u);
(void)row;
#define ST_TILE_SNAP_ROW \
do { \
chunkyOut[0] = srcAddr[0]; \
chunkyOut[1] = srcAddr[2]; \
chunkyOut[2] = srcAddr[4]; \
chunkyOut[3] = srcAddr[6]; \
srcAddr += ST_BYTES_PER_ROW; \
chunkyOut += TILE_BYTES_PER_ROW; \
} while (0)
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
ST_TILE_SNAP_ROW;
#undef ST_TILE_SNAP_ROW
}
// Phase 10: direct planar->planar tile copy. Each tile occupies one
// half-byte of one plane word per plane per row (8 rows total).
// We just byte-copy 4 plane bytes per row -- no chunky scratch, no
// bit transpose, no LUT. ~640 cyc per tile vs ~5000 cyc for the
// snap+paste path.
static inline __attribute__((always_inline)) void stTileCopy(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy) {
StPlanarT *dstPd;
const StPlanarT *srcPd;
uint8_t *dstAddr;
const uint8_t *srcAddr;
uint16_t srcGroup;
uint16_t dstGroup;
int16_t row;
if (dst->portData == NULL || src->portData == NULL) {
jlpGenericTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy);
return;
}
dstPd = (StPlanarT *)dst->portData;
srcPd = (const StPlanarT *)src->portData;
srcGroup = (uint16_t)((uint16_t)srcBx >> 1);
dstGroup = (uint16_t)((uint16_t)dstBx >> 1);
srcAddr = srcPd->base
+ (uint16_t)srcBy * 8u * ST_BYTES_PER_ROW
+ srcGroup * ST_BYTES_PER_GROUP
+ (uint16_t)(srcBx & 1u);
dstAddr = dstPd->base
+ (uint16_t)dstBy * 8u * ST_BYTES_PER_ROW
+ dstGroup * ST_BYTES_PER_GROUP
+ (uint16_t)(dstBx & 1u);
/* gcc-mint -O2 does NOT unroll the 8-iter byte-copy loop,
* leaving cmpl + bnes loop overhead per row. Manual unroll
* drops ~150 cyc/call. (void)row keeps the unused decl quiet. */
(void)row;
#define ST_TILE_COPY_ROW \
do { \
dstAddr[0] = srcAddr[0]; \
dstAddr[2] = srcAddr[2]; \
dstAddr[4] = srcAddr[4]; \
dstAddr[6] = srcAddr[6]; \
srcAddr += ST_BYTES_PER_ROW; \
dstAddr += ST_BYTES_PER_ROW; \
} while (0)
ST_TILE_COPY_ROW; /* row 0 */
ST_TILE_COPY_ROW; /* row 1 */
ST_TILE_COPY_ROW; /* row 2 */
ST_TILE_COPY_ROW; /* row 3 */
ST_TILE_COPY_ROW; /* row 4 */
ST_TILE_COPY_ROW; /* row 5 */
ST_TILE_COPY_ROW; /* row 6 */
ST_TILE_COPY_ROW; /* row 7 */
#undef ST_TILE_COPY_ROW
}
static inline __attribute__((always_inline)) void stTileCopyMasked(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT *src, uint8_t srcBx, uint8_t srcBy, uint8_t transparent) {
StPlanarT *dstPd;
uint8_t scratch[TILE_BYTES];
int16_t row;
uint16_t dstX0;
uint16_t dstY0;
uint16_t group;
uint16_t halfOff;
uint8_t *dstByte;
uint8_t p0;
uint8_t p1;
uint8_t p2;
uint8_t p3;
uint8_t xK0;
uint8_t xK1;
uint8_t xK2;
uint8_t xK3;
uint8_t mask;
uint8_t notMask;
if (dst->portData == NULL) {
jlpGenericTileCopyMasked(dst, dstBx, dstBy, src, srcBx, srcBy, transparent);
return;
}
dstPd = (StPlanarT *)dst->portData;
/* Phase 10.5: bulk-plane fast path. scratch holds plane-major bytes
* (4 plane bytes per row * 8 rows). For each row, build a "non-
* transparent" mask = OR of (plane_byte XOR replicated transparent
* bit) -- 1s where the source pixel != transparent. Then 4 byte
* RMWs (one per plane) write the row at byte-aligned dst.
*
* For transparent=0 this collapses to mask = p0|p1|p2|p3.
* Replaces the prior 64-iteration per-pixel SetPixel walker. */
stTileSnap(src, srcBx, srcBy, scratch);
dstX0 = (uint16_t)((uint16_t)dstBx * TILE_PIXELS_PER_SIDE);
dstY0 = (uint16_t)((uint16_t)dstBy * TILE_PIXELS_PER_SIDE);
group = (uint16_t)(dstX0 >> 4);
halfOff = (uint16_t)((dstX0 & 8u) >> 3u);
dstByte = dstPd->base + dstY0 * ST_BYTES_PER_ROW
+ group * ST_BYTES_PER_GROUP + halfOff;
xK0 = (transparent & 1u) ? 0xFFu : 0u;
xK1 = (transparent & 2u) ? 0xFFu : 0u;
xK2 = (transparent & 4u) ? 0xFFu : 0u;
xK3 = (transparent & 8u) ? 0xFFu : 0u;
for (row = 0; row < TILE_PIXELS_PER_SIDE; row++) {
p0 = scratch[row * 4 + 0];
p1 = scratch[row * 4 + 1];
p2 = scratch[row * 4 + 2];
p3 = scratch[row * 4 + 3];
mask = (uint8_t)((p0 ^ xK0) | (p1 ^ xK1) | (p2 ^ xK2) | (p3 ^ xK3));
if (mask != 0u) {
notMask = (uint8_t)~mask;
dstByte[0] = (uint8_t)((dstByte[0] & notMask) | (p0 & mask));
dstByte[2] = (uint8_t)((dstByte[2] & notMask) | (p1 & mask));
dstByte[4] = (uint8_t)((dstByte[4] & notMask) | (p2 & mask));
dstByte[6] = (uint8_t)((dstByte[6] & notMask) | (p3 & mask));
}
dstByte += ST_BYTES_PER_ROW;
}
}
#endif

465
src/codegen/spriteCompile.c
View file

@ -368,464 +368,7 @@ bool jlSpriteCompile(jlSpriteT *sp) {
// re-derivation is gone (#29). // re-derivation is gone (#29).
#if defined(JOEYLIB_PLATFORM_IIGS) // The spriteCompiled* runtime dispatchers moved to
// src/core/spriteDispatch.h as always-inline functions consumed by
// SURFACE_ROW_OFFSET dispatches to the gRowOffsetLut lookup on IIgs; // sprite.c (NATIVE-PERF Phase 2 R5). This TU keeps only the
// declared in surfaceInternal.h. Uses a single indexed long-mode read // compile-time machinery.
// for the multiply.
// IIgs sprite dispatch. The emitted routines (spriteEmitIigs.c) are ordinary
// C-ABI functions called through C function pointers, so the compiler emits the
// cross-bank JSL itself (large memory model -> 24-bit pointers). The DRAW
// routine takes the 24-bit dst pointer in A:X and sets up its own DBR (needed
// for `sta abs,Y`, whose high byte comes from DBR) + Y in a fixed prologue, then
// restores DBR before returning. SAVE/RESTORE take packed src/dst offsets and
// have only their MVN bank operands patched per call (a plain C pointer write
// into the arena from the dispatcher). No self-modifying call stub, no inline
// asm -- the machinery that hid the old un-instrumentable #19 corruption.
void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
uint8_t *dstRow0;
uint32_t fnAddr;
void (*drawFn)(uint8_t *);
// Clean C-ABI dispatch. The emitted DRAW routine is a normal C function
// -- void draw(uint8_t *dstRow0) -- so the compiler emits the indirect
// JSL itself: NO self-modifying call stub, NO inline asm, NO hand-rolled
// per-call bank/offset patching (that machinery was the source of the
// old un-instrumentable corruption). dstRow0 (the sprite's top-left
// screen byte) is passed in A:X; the routine's prologue (spriteEmitIigs.c)
// sets up its own DBR/Y and restores DBR on exit. routeOffset is the
// gate-derived DRAW offset for this shift (#29).
dstRow0 = &dst->pixels[SURFACE_ROW_OFFSET(y) + ((uint16_t)x >> 1)];
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
drawFn = (void (*)(uint8_t *))fnAddr;
drawFn(dstRow0);
}
// patchMvnBanks stamps the dst/src bank operand bytes into each MVN inside an
// emitted C-ABI save/restore routine -- the routine's only runtime-dynamic
// bytes, since MVN's banks are immediate operands and the screen/backup banks
// vary at runtime. The patch is a plain C pointer write into the arena from
// the dispatcher (no self-modifying call stub). C-ABI routine layout from
// spriteEmitIigs.c::emitMvnCabiRoutine:
// prologue (4): 8B DA AA 7A
// row 0 (6): A9 lo hi 54 db sb
// row R (12): 8A/98 18 69 lo hi AA/A8 A9 lo hi 54 db sb
// epilogue (2): AB 6B
// The 4-byte prologue shifts MVN dstbk to routine offset (12*R + 8), srcbk to
// (12*R + 9).
static void patchMvnBanks(uint8_t *routine, uint16_t heightPx, uint8_t dstBank, uint8_t srcBank) {
uint16_t r;
for (r = 0; r < heightPx; r++) {
routine[12u * r + 8u] = dstBank;
routine[12u * r + 9u] = srcBank;
}
}
// Split a 24-bit pointer into its low 16 bits + bank byte. To avoid
// invoking a 32-bit-shift helper for the `>> 16` to extract the bank
// byte, we cast to uint32_t and then byte-alias the storage -- gets
// the same bytes with simple loads.
#define SPLIT_POINTER(_ptr, _outLo, _outBank) \
do { \
uint32_t spAddr_ = (uint32_t)(_ptr); \
const uint8_t *spB_ = (const uint8_t *)&spAddr_; \
*(_outLo) = (uint16_t)(spB_[0] | ((uint16_t)spB_[1] << 8)); \
*(_outBank) = spB_[2]; \
} while (0)
// The backup->bytes pointer is split with SPLIT_POINTER directly. A
// single-entry global split cache used to live here (#59); it assumed
// one backup buffer per program, but the normal pattern is one buffer
// per moving sprite, so with 2+ sprites the cached pointer ping-ponged
// and every call paid a 24-bit compare AND the full split. The split
// itself is ~6 simple loads/stores -- cheaper than the compare on a
// hit -- so the cache was deleted rather than moved per-sprite.
void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
int16_t clippedX;
uint16_t heightPx;
uint16_t copyBytes;
uint16_t screenLo;
uint16_t backupLo;
uint8_t screenBank;
uint8_t backupBank;
uint32_t fnAddr;
uint8_t *routine;
uint8_t *screenPtr;
uint16_t cacheIdx; /* shift * SPRITE_OP_COUNT + SPRITE_OP_SAVE, computed once */
uint8_t *cachedDst; /* &sp->cachedDstBank[0][0] + cacheIdx */
uint8_t *cachedSrc; /* &sp->cachedSrcBank[0][0] + cacheIdx */
// shift and routeOffset arrive pre-derived from the dispatcher
// gate (#29); widthPx/heightPx are create-time constants cached in
// the sprite struct.
clippedX = (int16_t)(x & ~1);
heightPx = sp->heightPx;
copyBytes = (uint16_t)((sp->widthPx >> 1) + shift); /* shift is x & 1, exactly 0 or 1 */
screenPtr = (uint8_t *)&src->pixels[SURFACE_ROW_OFFSET(y) + ((uint16_t)clippedX >> 1)];
SPLIT_POINTER(screenPtr, &screenLo, &screenBank);
SPLIT_POINTER(backup->bytes, &backupLo, &backupBank);
backup->sprite = sp;
backup->x = clippedX;
backup->y = y;
backup->width = (uint16_t)(copyBytes << 1);
backup->height = heightPx;
/* sizeBytes is constant per (sprite, shift); cache to dodge the
* per-call ~CUMUL2 (uint16_t * uint16_t) helper. The byte-pointer
* arithmetic avoids reintroducing ~MUL4 for the uint16_t array
* indexing. */
{
uint16_t *sizeCachePtr = (uint16_t *)((uint8_t *)sp->cachedSizeBytes + ((uint16_t)shift << 1));
if (*sizeCachePtr == 0) {
*sizeCachePtr = (uint16_t)(copyBytes * heightPx);
}
backup->sizeBytes = *sizeCachePtr;
}
/* Compute the 1D index into the cached* bank arrays once;
* SPRITE_ROUTINE_INDEX (spriteInternal.h) owns the multiply-free
* derivation. */
cacheIdx = SPRITE_ROUTINE_INDEX(shift, SPRITE_OP_SAVE);
cachedDst = (uint8_t *)sp->cachedDstBank + cacheIdx;
cachedSrc = (uint8_t *)sp->cachedSrcBank + cacheIdx;
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
// Patch the MVN bank operands only if the dst/src bank pair changed since
// last call (the routine's only dynamic bytes). SAVE copies screen ->
// backup: dst = backup bank, src = screen bank.
if (*cachedDst != backupBank || *cachedSrc != screenBank) {
routine = (uint8_t *)fnAddr;
patchMvnBanks(routine, heightPx, /*dst*/backupBank, /*src*/screenBank);
*cachedDst = backupBank;
*cachedSrc = screenBank;
}
// Clean C-ABI dispatch -- void save(uint32_t packed), packed = srcOff |
// (dstOff << 16). The compiler emits the indirect JSL: no self-modifying
// call stub, no inline asm. SAVE: src = screen offset, dst = backup offset.
{
uint32_t packed = (uint32_t)screenLo | ((uint32_t)backupLo << 16);
((void (*)(uint32_t))fnAddr)(packed);
}
}
void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
uint16_t heightPx;
uint16_t screenLo;
uint16_t backupLo;
uint8_t screenBank;
uint8_t backupBank;
uint32_t fnAddr;
uint8_t *routine;
uint8_t *screenPtr;
jlSpriteT *sp;
uint16_t cacheIdx; /* shift * SPRITE_OP_COUNT + SPRITE_OP_RESTORE, computed once */
uint8_t *cachedDst;
uint8_t *cachedSrc;
// shift and routeOffset arrive pre-derived from the
// jlSpriteRestoreUnder gate (#29) -- no per-call re-inference of
// the shift from the backup here.
sp = backup->sprite;
heightPx = backup->height;
screenPtr = (uint8_t *)&dst->pixels[SURFACE_ROW_OFFSET(backup->y) + ((uint16_t)backup->x >> 1)];
SPLIT_POINTER(screenPtr, &screenLo, &screenBank);
SPLIT_POINTER(backup->bytes, &backupLo, &backupBank);
/* Hoist 2D-array indexing -- see save-side comment. */
cacheIdx = SPRITE_ROUTINE_INDEX(shift, SPRITE_OP_RESTORE);
cachedDst = (uint8_t *)sp->cachedDstBank + cacheIdx;
cachedSrc = (uint8_t *)sp->cachedSrcBank + cacheIdx;
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
// Patch the MVN bank operands only if they changed (the routine's only
// dynamic bytes). RESTORE copies backup -> screen: dst = screen bank,
// src = backup bank.
if (*cachedDst != screenBank || *cachedSrc != backupBank) {
routine = (uint8_t *)fnAddr;
patchMvnBanks(routine, heightPx, /*dst*/screenBank, /*src*/backupBank);
*cachedDst = screenBank;
*cachedSrc = backupBank;
}
// Clean C-ABI dispatch -- void restore(uint32_t packed), packed = srcOff |
// (dstOff << 16). RESTORE: src = backup offset, dst = screen offset.
{
uint32_t packed = (uint32_t)backupLo | ((uint32_t)screenLo << 16);
((void (*)(uint32_t))fnAddr)(packed);
}
}
#elif defined(JOEYLIB_PLATFORM_AMIGA)
// Amiga planar dispatchers. spriteEmitPlanar68k.c emits DRAW routines
// with a cdecl(p0, p1, p2, p3) signature that write directly to
// bitplanes, one pre-shifted variant per x % 8 phase (all 8 compiled
// since NATIVE-PERF Phase 1). Compute byteOff = y*40 + x/8 and pass
// plane[i]+byteOff as the 4 plane args. Every caller gate in
// src/core/sprite.c checks routineOffsets[shift][op] !=
// SPRITE_NOT_COMPILED before calling here (#29); anything uncompiled
// (clip, degrade-tier truncation) falls back to the interpreted
// jlpSpriteDrawPlanes / jlpSpriteSavePlanes / jlpSpriteRestorePlanes.
//
// Plane pointers come straight from portData via amigaPlanar.h's
// inline accessor (NATIVE-PERF Phase 2) -- the old jlpSurfacePlanePtr
// cross-TU call cost ~190 cycles PER PLANE, x4 per dispatch. The
// pd == NULL gate preserves the "not a planar surface -> no-op"
// contract those calls provided.
#include "amigaPlanar.h"
void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3);
AmigaPlanarT *pd;
uint16_t byteOff;
DrawFn fn;
pd = amigaSurfacePlanar(dst);
if (pd == NULL) {
return;
}
byteOff = (uint16_t)((uint16_t)y * AMIGA_BYTES_PER_ROW + ((uint16_t)x >> 3));
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff);
}
// Compiled save/restore (NATIVE-PERF Phase 1): the emitted routines are
// cdecl(p0, p1, p2, p3, buf) plane-run copiers over the 16-px-group
// window (bx = x & ~15, nGroups = SPRITE_GROUPS0 + class). shift here
// is the width CLASS from SPRITE_SAVE_CLASS / SPRITE_RESTORE_CLASS,
// not the draw bit-phase. Row displacements are baked into the
// routine; the window's x phase enters only through the plane base
// pointers (byteOff is even by construction -- bx % 16 == 0 -- so the
// emitted move.w/move.l are 68000-legal).
void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3, uint8_t *buf);
AmigaPlanarT *pd;
int16_t bx;
uint16_t nGroups;
uint16_t byteOff;
CopyFn fn;
pd = amigaSurfacePlanar(src);
if (pd == NULL) {
return;
}
bx = (int16_t)(x & ~15);
nGroups = (uint16_t)(SPRITE_GROUPS0(sp->widthPx) + shift);
byteOff = (uint16_t)((uint16_t)y * AMIGA_BYTES_PER_ROW + ((uint16_t)bx >> 3));
backup->x = bx;
backup->y = y;
backup->width = (uint16_t)(nGroups << 4);
backup->height = sp->heightPx;
backup->sizeBytes = (uint16_t)((uint16_t)(nGroups << 3) * sp->heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff, backup->bytes);
}
void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3, uint8_t *buf);
AmigaPlanarT *pd;
uint16_t byteOff;
CopyFn fn;
(void)shift;
pd = amigaSurfacePlanar(dst);
if (pd == NULL) {
return;
}
byteOff = (uint16_t)((uint16_t)backup->y * AMIGA_BYTES_PER_ROW + ((uint16_t)backup->x >> 3));
fn = (CopyFn)(codegenArenaBase() + backup->sprite->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff, backup->bytes);
}
#elif defined(JOEYLIB_PLATFORM_ATARIST)
// ST word-interleaved planar runtime dispatch. The JIT routine takes
// one arg: groupBase = pd->base + y*160 + (x>>4)*8 (the address of
// the first 16-pixel group the sprite touches). It walks rows by
// adda.w #160 at the end of each row. Per (row, tile_col, plane) it
// emits up to one move.b / clr.b / andi.b+ori.b / ori.b chain at
// d16(a0).
//
// shift selection (in spriteInternal.h SPRITE_SHIFT_INDEX): the full
// intra-group phase x & 15. Phases 0/8 are the unrolled byte-aligned
// JIT; the 14 sub-byte phases are thunk + pre-shifted data tables
// driven by stSpriteDrawShiftWalker (all compiled since NATIVE-PERF
// Phase 1). Anything uncompiled falls back to jlpSpriteDrawPlanes via
// the caller gates (#29).
// ST word-interleaved row stride: 320 px * 4 planes / 8 bits = 160
// bytes/row. Numerically equal to SURFACE_BYTES_PER_ROW but a distinct
// fact (group-interleaved layout, not chunky), so it gets its own
// name. Each 16-pixel group is 4 plane words = 8 bytes.
#define ST_GROUP_BYTES_PER_ROW (SURFACE_WIDTH * 4 / 8)
#define ST_BYTES_PER_PLANE_GROUP 8u
// Buffer base comes straight from portData via stPlanar.h's inline
// accessor (NATIVE-PERF Phase 2); the pd == NULL gate preserves the
// "not a planar surface -> no-op" contract the old jlpSurfacePlanePtr
// cross-TU call provided.
#include "stPlanar.h"
void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *groupBase);
StPlanarT *pd;
uint8_t *groupBase;
DrawFn fn;
pd = stSurfacePlanar(dst);
if (pd == NULL) {
return;
}
groupBase = pd->base
+ (uint16_t)y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)x >> 4) * ST_BYTES_PER_PLANE_GROUP;
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(groupBase);
}
// Compiled save/restore (NATIVE-PERF Phase 1): the emitted routines are
// cdecl(src, dst) raw-span copiers over the 16-px-group window
// (bx = x & ~15, nGroups = SPRITE_GROUPS0 + class); a group window's
// rows are CONTIGUOUS byte spans in the interleaved layout, so the
// routine is a pure move.l chain with the inter-row stride baked in.
// shift here is the width CLASS, not the draw bit-phase. rowStart is
// always even (bx % 16 == 0, base is long-aligned), so move.l is
// 68000-legal.
void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
StPlanarT *pd;
int16_t bx;
uint16_t nGroups;
uint8_t *rowStart;
CopyFn fn;
pd = stSurfacePlanar(src);
if (pd == NULL) {
return;
}
bx = (int16_t)(x & ~15);
nGroups = (uint16_t)(SPRITE_GROUPS0(sp->widthPx) + shift);
rowStart = pd->base
+ (uint16_t)y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)bx >> 4) * ST_BYTES_PER_PLANE_GROUP;
backup->x = bx;
backup->y = y;
backup->width = (uint16_t)(nGroups << 4);
backup->height = sp->heightPx;
backup->sizeBytes = (uint16_t)((uint16_t)(nGroups << 3) * sp->heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(rowStart, backup->bytes);
}
void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
StPlanarT *pd;
uint8_t *rowStart;
CopyFn fn;
(void)shift;
pd = stSurfacePlanar(dst);
if (pd == NULL) {
return;
}
rowStart = pd->base
+ (uint16_t)backup->y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)backup->x >> 4) * ST_BYTES_PER_PLANE_GROUP;
fn = (CopyFn)(codegenArenaBase() + backup->sprite->slot->offset + routeOffset);
fn(backup->bytes, rowStart);
}
#else
void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *destRow);
uint8_t *destRow;
DrawFn fn;
destRow = &dst->pixels[(uint16_t)y * SURFACE_BYTES_PER_ROW + ((uint16_t)x >> 1)];
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(destRow);
}
// x86 / 68k compiled save: bytes are a cdecl
// void copy(const uint8_t *src, uint8_t *dst)
// that walks heightPx rows of copyBytes from screen (stride
// SURFACE_BYTES_PER_ROW) into the contiguous backup buffer. shift and
// routeOffset arrive pre-derived from the dispatcher gate (#29).
void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
int16_t clippedX;
uint16_t heightPx;
uint16_t copyBytes;
uint8_t *screenPtr;
CopyFn fn;
clippedX = (int16_t)(x & ~1);
heightPx = sp->heightPx;
copyBytes = (uint16_t)((sp->widthPx >> 1) + shift); /* shift is x & 1, exactly 0 or 1 */
screenPtr = (uint8_t *)&src->pixels[(uint16_t)y * SURFACE_BYTES_PER_ROW + ((uint16_t)clippedX >> 1)];
backup->sprite = sp;
backup->x = clippedX;
backup->y = y;
backup->width = (uint16_t)(copyBytes << 1);
backup->height = heightPx;
backup->sizeBytes = (uint16_t)(copyBytes * heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(screenPtr, backup->bytes);
}
// Mirror of save: caller swaps arg order so the same emitted shape
// drives backup -> screen. The screen-side stride lives inside the
// emitted bytes, so RESTORE has its own routine bytes (stride is
// applied to dst instead of src). routeOffset arrives pre-derived
// from the jlSpriteRestoreUnder gate (#29); shift is unused here (no
// bank-patch cache off-IIgs) but kept for the shared signature.
void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
jlSpriteT *sp;
uint8_t *screenPtr;
CopyFn fn;
(void)shift;
sp = backup->sprite;
screenPtr = (uint8_t *)&dst->pixels[(uint16_t)backup->y * SURFACE_BYTES_PER_ROW + ((uint16_t)backup->x >> 1)];
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(backup->bytes, screenPtr);
}
#endif

12
src/core/draw.c
View file

@ -629,8 +629,20 @@ void jlDrawPixel(jlSurfaceT *s, int16_t x, int16_t y, uint8_t colorIndex) {
if ((uint16_t)x >= SURFACE_WIDTH || (uint16_t)y >= SURFACE_HEIGHT) { if ((uint16_t)x >= SURFACE_WIDTH || (uint16_t)y >= SURFACE_HEIGHT) {
return; return;
} }
#ifdef JOEYLIB_PLATFORM_IIGS
// Fused plot+mark in ONE JSL for the stage (NATIVE-PERF Phase 2
// R10); non-stage surfaces carry no dirty state, so the plain plot
// suffices there. The batching plotters (plotPixelNoMark) keep the
// unfused inner.
if (s == gStage) {
iigsDrawPixelMark((uint16_t)x, (uint16_t)y, (uint16_t)(colorIndex & 0x0Fu));
return;
}
jlpDrawPixel(s, (uint16_t)x, (uint16_t)y, colorIndex);
#else
jlpDrawPixel(s, (uint16_t)x, (uint16_t)y, colorIndex); jlpDrawPixel(s, (uint16_t)x, (uint16_t)y, colorIndex);
surfaceMarkDirtyRect(s, x, y, 1, 1); surfaceMarkDirtyRect(s, x, y, 1, 1);
#endif
} }

68
src/core/port.h
View file

@ -54,15 +54,19 @@
// ===================================================================== // =====================================================================
extern void iigsDrawPixelInner (uint8_t *pixels, uint16_t x, uint16_t y, uint16_t nibble); extern void iigsDrawPixelInner (uint8_t *pixels, uint16_t x, uint16_t y, uint16_t nibble);
extern void iigsDrawPixelMark (uint16_t x, uint16_t y, uint16_t nibble);
extern void iigsDrawLineInner (uint8_t *pixels, uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t nibble); extern void iigsDrawLineInner (uint8_t *pixels, uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t nibble);
extern void iigsDrawCircleInner (uint8_t *pixels, uint16_t cx, uint16_t cy, uint16_t r, uint16_t nibble); extern void iigsDrawCircleInner (uint8_t *pixels, uint16_t cx, uint16_t cy, uint16_t r, uint16_t nibble);
extern void iigsFillCircleInner (uint8_t *pixels, uint16_t cx, uint16_t cy, uint16_t r, uint16_t nibble); extern void iigsFillCircleInner (uint8_t *pixels, uint16_t cx, uint16_t cy, uint16_t r, uint16_t nibble);
extern void iigsSurfaceClearInner(uint8_t *pixels, uint16_t fillWord); extern void iigsSurfaceClearInner(uint8_t *pixels, uint16_t fillWord);
extern void iigsSurfaceClearFastInner(uint8_t *pixels, uint16_t fillWord); extern void iigsSurfaceClearFastInner(uint8_t *pixels, uint16_t fillWord);
extern void iigsTileFillInner (uint8_t *dstRow0, uint16_t nibble); extern void iigsTileFillInner (uint8_t *dstRow0, uint16_t nibble);
extern void iigsTileFillMark (uint16_t nibble, uint16_t bx, uint16_t by);
extern void iigsTileCopyInner (uint8_t *dstRow0, const uint8_t *srcRow0); extern void iigsTileCopyInner (uint8_t *dstRow0, const uint8_t *srcRow0);
extern void iigsTileCopyMark (const uint8_t *srcRow0, uint16_t dstBx, uint16_t dstBy);
extern void iigsTileCopyMaskedInner(uint8_t *dstRow0, const uint8_t *srcRow0, uint16_t transparent); extern void iigsTileCopyMaskedInner(uint8_t *dstRow0, const uint8_t *srcRow0, uint16_t transparent);
extern void iigsTilePasteInner (uint8_t *dstRow0, const uint8_t *srcTilePixels); extern void iigsTilePasteInner (uint8_t *dstRow0, const uint8_t *srcTilePixels);
extern void iigsTilePasteMark (const uint8_t *srcTilePixels, uint16_t bx, uint16_t by);
extern void iigsTilePasteMonoInner(uint8_t *dstRow0, const uint8_t *monoTile, uint16_t fgColor, uint16_t bgColor); extern void iigsTilePasteMonoInner(uint8_t *dstRow0, const uint8_t *monoTile, uint16_t fgColor, uint16_t bgColor);
extern void iigsTileSnapInner (uint8_t *dstTilePixels, const uint8_t *srcRow0); extern void iigsTileSnapInner (uint8_t *dstTilePixels, const uint8_t *srcRow0);
extern void iigsFillRectInner (uint8_t *pixels, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t nibble); extern void iigsFillRectInner (uint8_t *pixels, uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t nibble);
@ -133,19 +137,32 @@ extern jlSurfaceT *gStage;
// forward the args. by/bx are tile coords -> bx*4 + by*8*160 byte // forward the args. by/bx are tile coords -> bx*4 + by*8*160 byte
// offset within the surface. Use SURFACE_ROW_OFFSET (LUT lookup) to // offset within the surface. Use SURFACE_ROW_OFFSET (LUT lookup) to
// dodge a software multiply helper for the *160 multiply. // dodge a software multiply helper for the *160 multiply.
// tileFill / tileCopy / tilePaste are STAGE-GATED onto the FUSED Mark
// entries (NATIVE-PERF Phase 2 Step D / R2): for the stage, ONE JSL
// derives the destination in asm from the pinned stage base + the
// gRowOffsetLut, runs the op, and widens the dirty band -- replacing
// C-side pointer math plus two JSLs (op inner + iigsMarkDirtyRowsInner
// via tile.c's tileMarkDirty, which is compiled out for these three
// ops on IIgs). Non-stage surfaces keep the pointer-based inners.
// tileFill: the macro passes the raw nibble (the jlp layer owns the & 0x0F); // tileFill: the macro passes the raw nibble (the jlp layer owns the & 0x0F);
// the asm derives the $NNNN fill word (PERF-AUDIT #41 -- the old C-side // the asm derives the $NNNN fill word (PERF-AUDIT #41 -- the old C-side
// * 0x1111 lowered to a software-multiply helper for a runtime color). // * 0x1111 lowered to a software-multiply helper for a runtime color).
#define jlpTileFill(_s, _bx, _by, _c) \ #define jlpTileFill(_s, _bx, _by, _c) \
iigsTileFillInner(&(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) \ ((_s) == gStage \
? iigsTileFillMark((uint16_t)((_c) & 0x0F), (uint16_t)(_bx), (uint16_t)(_by)) \
: iigsTileFillInner(&(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) \
+ ((uint16_t)(_bx) << 2)], \ + ((uint16_t)(_bx) << 2)], \
(uint16_t)((_c) & 0x0F)) (uint16_t)((_c) & 0x0F)))
// tileCopy / tileCopyMasked: take surface+tile-coords; the asm macro derives // tileCopy / tileCopyMasked: take surface+tile-coords; the asm macro derives
// row-0 pointers (row = by*8 -> SURFACE_ROW_OFFSET(by<<3); col byte = bx*4 -> bx<<2). // row-0 pointers (row = by*8 -> SURFACE_ROW_OFFSET(by<<3); col byte = bx*4 -> bx<<2).
// tileCopy's src may be ANY surface, so its row-0 pointer stays C-derived
// even on the fused stage-dst arm.
#define jlpTileCopy(_d, _dbx, _dby, _s, _sbx, _sby) \ #define jlpTileCopy(_d, _dbx, _dby, _s, _sbx, _sby) \
iigsTileCopyInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_dby) << 3) + ((uint16_t)(_dbx) << 2)], \ ((_d) == gStage \
&(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_sby) << 3) + ((uint16_t)(_sbx) << 2)]) ? iigsTileCopyMark(&(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_sby) << 3) + ((uint16_t)(_sbx) << 2)], (uint16_t)(_dbx), (uint16_t)(_dby)) \
: iigsTileCopyInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_dby) << 3) + ((uint16_t)(_dbx) << 2)], \
&(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_sby) << 3) + ((uint16_t)(_sbx) << 2)]))
#define jlpTileCopyMasked(_d, _dbx, _dby, _s, _sbx, _sby, _t) \ #define jlpTileCopyMasked(_d, _dbx, _dby, _s, _sbx, _sby, _t) \
iigsTileCopyMaskedInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_dby) << 3) + ((uint16_t)(_dbx) << 2)], \ iigsTileCopyMaskedInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_dby) << 3) + ((uint16_t)(_dbx) << 2)], \
@ -155,7 +172,9 @@ extern jlSurfaceT *gStage;
// tilePaste / tileSnap: take surface+coords + the chunky tile buffer; the asm // tilePaste / tileSnap: take surface+coords + the chunky tile buffer; the asm
// macros derive row-0. // macros derive row-0.
#define jlpTilePaste(_d, _bx, _by, _ct) \ #define jlpTilePaste(_d, _bx, _by, _ct) \
iigsTilePasteInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) + ((uint16_t)(_bx) << 2)], (_ct)) ((_d) == gStage \
? iigsTilePasteMark((_ct), (uint16_t)(_bx), (uint16_t)(_by)) \
: iigsTilePasteInner(&(_d)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) + ((uint16_t)(_bx) << 2)], (_ct)))
#define jlpTileSnap(_s, _bx, _by, _out) \ #define jlpTileSnap(_s, _bx, _by, _out) \
iigsTileSnapInner((_out), &(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) + ((uint16_t)(_bx) << 2)]) iigsTileSnapInner((_out), &(_s)->pixels[SURFACE_ROW_OFFSET((uint16_t)(_by) << 3) + ((uint16_t)(_bx) << 2)])
@ -296,6 +315,36 @@ extern uint16_t iigsGetTickWord(void);
#endif /* JOEYLIB_PLATFORM_IIGS */ #endif /* JOEYLIB_PLATFORM_IIGS */
// =====================================================================
// 68k tile ops as always-inline headers (NATIVE-PERF Phase 2 R4a).
//
// The ST/Amiga tile overrides live in stTile.h / amigaTile.h as
// static inline functions named stTile* / amigaTile*. Aliasing the
// jlpTile* dispatch names to them HERE (before the dispatch tail)
// makes the tail's #if !defined(jlpTile*) guards skip their extern
// prototypes -- same mechanism as the IIgs macro block above -- and
// every caller (tile.c wrappers, genericTile.c fallback routing)
// inlines the op instead of paying a second cdecl call. The headers
// themselves are #included at the END of this file so their
// portData == NULL fallbacks can see the jlpGenericTile* prototypes
// declared in the dispatch tail.
// =====================================================================
#if defined(JOEYLIB_PLATFORM_ATARIST)
#define jlpTileFill stTileFill
#define jlpTileCopy stTileCopy
#define jlpTileCopyMasked stTileCopyMasked
#define jlpTilePaste stTilePaste
#define jlpTilePasteMono stTilePasteMono
#define jlpTileSnap stTileSnap
#elif defined(JOEYLIB_PLATFORM_AMIGA)
#define jlpTileFill amigaTileFill
#define jlpTileCopy amigaTileCopy
#define jlpTileCopyMasked amigaTileCopyMasked
#define jlpTilePaste amigaTilePaste
#define jlpTilePasteMono amigaTilePasteMono
#define jlpTileSnap amigaTileSnap
#endif
// ===================================================================== // =====================================================================
// Chunky planar-hook elision for the other chunky ports (PERF-AUDIT #42). // Chunky planar-hook elision for the other chunky ports (PERF-AUDIT #42).
// //
@ -833,4 +882,13 @@ void jlpGenericBigFree(void *p);
#define jlpBigFree(_p) jlpGenericBigFree((_p)) #define jlpBigFree(_p) jlpGenericBigFree((_p))
#endif #endif
#endif #endif
// 68k tile-op inline bodies (see the alias block above the dispatch
// tail). Included LAST so they can call the jlpGenericTile*
// prototypes declared above.
#if defined(JOEYLIB_PLATFORM_ATARIST)
#include "stTile.h"
#elif defined(JOEYLIB_PLATFORM_AMIGA)
#include "amigaTile.h"
#endif
#endif #endif

1
src/core/sprite.c
View file

@ -12,6 +12,7 @@
#include "codegenArenaInternal.h" #include "codegenArenaInternal.h"
#include "port.h" #include "port.h"
#include "spriteInternal.h" #include "spriteInternal.h"
#include "spriteDispatch.h"
#include "surfaceInternal.h" #include "surfaceInternal.h"

488
src/core/spriteDispatch.h Normal file
View file

@ -0,0 +1,488 @@
// Compiled-sprite runtime dispatchers as always-inline functions
// (NATIVE-PERF Phase 2 R5). Bodies moved verbatim from
// src/codegen/spriteCompile.c so the hot entries in src/core/sprite.c
// inline them -- deleting a cross-TU call per compiled sprite op
// (~130 cycles on the 68000, more on the 65816 with its JSL + frame)
// and letting the compiler share the slot/field loads the caller
// already performed. sprite.c is the ONLY consumer; include this
// header nowhere else. The compile-time machinery (jlSpriteCompile,
// emitters, arena plumbing) stays in spriteCompile.c.
#ifndef JOEY_SPRITE_DISPATCH_H
#define JOEY_SPRITE_DISPATCH_H
#include <stdint.h>
#include <stdbool.h>
#include "codegenArenaInternal.h"
#include "spriteInternal.h"
#include "surfaceInternal.h"
#if defined(JOEYLIB_PLATFORM_AMIGA)
#include "amigaPlanar.h"
#elif defined(JOEYLIB_PLATFORM_ATARIST)
#include "stPlanar.h"
#endif
#if defined(JOEYLIB_PLATFORM_IIGS)
// SURFACE_ROW_OFFSET dispatches to the gRowOffsetLut lookup on IIgs;
// declared in surfaceInternal.h. Uses a single indexed long-mode read
// for the multiply.
// IIgs sprite dispatch. The emitted routines (spriteEmitIigs.c) are ordinary
// C-ABI functions called through C function pointers, so the compiler emits the
// cross-bank JSL itself (large memory model -> 24-bit pointers). The DRAW
// routine takes the 24-bit dst pointer in A:X and sets up its own DBR (needed
// for `sta abs,Y`, whose high byte comes from DBR) + Y in a fixed prologue, then
// restores DBR before returning. SAVE/RESTORE take packed src/dst offsets and
// have only their MVN bank operands patched per call (a plain C pointer write
// into the arena from the dispatcher). No self-modifying call stub, no inline
// asm -- the machinery that hid the old un-instrumentable #19 corruption.
static inline __attribute__((always_inline)) void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
uint8_t *dstRow0;
uint32_t fnAddr;
void (*drawFn)(uint8_t *);
// Clean C-ABI dispatch. The emitted DRAW routine is a normal C function
// -- void draw(uint8_t *dstRow0) -- so the compiler emits the indirect
// JSL itself: NO self-modifying call stub, NO inline asm, NO hand-rolled
// per-call bank/offset patching (that machinery was the source of the
// old un-instrumentable corruption). dstRow0 (the sprite's top-left
// screen byte) is passed in A:X; the routine's prologue (spriteEmitIigs.c)
// sets up its own DBR/Y and restores DBR on exit. routeOffset is the
// gate-derived DRAW offset for this shift (#29).
dstRow0 = &dst->pixels[SURFACE_ROW_OFFSET(y) + ((uint16_t)x >> 1)];
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
drawFn = (void (*)(uint8_t *))fnAddr;
drawFn(dstRow0);
}
// patchMvnBanks stamps the dst/src bank operand bytes into each MVN inside an
// emitted C-ABI save/restore routine -- the routine's only runtime-dynamic
// bytes, since MVN's banks are immediate operands and the screen/backup banks
// vary at runtime. The patch is a plain C pointer write into the arena from
// the dispatcher (no self-modifying call stub). C-ABI routine layout from
// spriteEmitIigs.c::emitMvnCabiRoutine:
// prologue (4): 8B DA AA 7A
// row 0 (6): A9 lo hi 54 db sb
// row R (12): 8A/98 18 69 lo hi AA/A8 A9 lo hi 54 db sb
// epilogue (2): AB 6B
// The 4-byte prologue shifts MVN dstbk to routine offset (12*R + 8), srcbk to
// (12*R + 9).
static inline void patchMvnBanks(uint8_t *routine, uint16_t heightPx, uint8_t dstBank, uint8_t srcBank) {
uint16_t r;
for (r = 0; r < heightPx; r++) {
routine[12u * r + 8u] = dstBank;
routine[12u * r + 9u] = srcBank;
}
}
// Split a 24-bit pointer into its low 16 bits + bank byte. To avoid
// invoking a 32-bit-shift helper for the `>> 16` to extract the bank
// byte, we cast to uint32_t and then byte-alias the storage -- gets
// the same bytes with simple loads.
#define SPLIT_POINTER(_ptr, _outLo, _outBank) \
do { \
uint32_t spAddr_ = (uint32_t)(_ptr); \
const uint8_t *spB_ = (const uint8_t *)&spAddr_; \
*(_outLo) = (uint16_t)(spB_[0] | ((uint16_t)spB_[1] << 8)); \
*(_outBank) = spB_[2]; \
} while (0)
// The backup->bytes pointer is split with SPLIT_POINTER directly. A
// single-entry global split cache used to live here (#59); it assumed
// one backup buffer per program, but the normal pattern is one buffer
// per moving sprite, so with 2+ sprites the cached pointer ping-ponged
// and every call paid a 24-bit compare AND the full split. The split
// itself is ~6 simple loads/stores -- cheaper than the compare on a
// hit -- so the cache was deleted rather than moved per-sprite.
static inline __attribute__((always_inline)) void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
int16_t clippedX;
uint16_t heightPx;
uint16_t copyBytes;
uint16_t screenLo;
uint16_t backupLo;
uint8_t screenBank;
uint8_t backupBank;
uint32_t fnAddr;
uint8_t *routine;
uint8_t *screenPtr;
uint16_t cacheIdx; /* shift * SPRITE_OP_COUNT + SPRITE_OP_SAVE, computed once */
uint8_t *cachedDst; /* &sp->cachedDstBank[0][0] + cacheIdx */
uint8_t *cachedSrc; /* &sp->cachedSrcBank[0][0] + cacheIdx */
// shift and routeOffset arrive pre-derived from the dispatcher
// gate (#29); widthPx/heightPx are create-time constants cached in
// the sprite struct.
clippedX = (int16_t)(x & ~1);
heightPx = sp->heightPx;
copyBytes = (uint16_t)((sp->widthPx >> 1) + shift); /* shift is x & 1, exactly 0 or 1 */
screenPtr = (uint8_t *)&src->pixels[SURFACE_ROW_OFFSET(y) + ((uint16_t)clippedX >> 1)];
SPLIT_POINTER(screenPtr, &screenLo, &screenBank);
SPLIT_POINTER(backup->bytes, &backupLo, &backupBank);
backup->sprite = sp;
backup->x = clippedX;
backup->y = y;
backup->width = (uint16_t)(copyBytes << 1);
backup->height = heightPx;
/* sizeBytes is constant per (sprite, shift); cache to dodge the
* per-call ~CUMUL2 (uint16_t * uint16_t) helper. The byte-pointer
* arithmetic avoids reintroducing ~MUL4 for the uint16_t array
* indexing. */
{
uint16_t *sizeCachePtr = (uint16_t *)((uint8_t *)sp->cachedSizeBytes + ((uint16_t)shift << 1));
if (*sizeCachePtr == 0) {
*sizeCachePtr = (uint16_t)(copyBytes * heightPx);
}
backup->sizeBytes = *sizeCachePtr;
}
/* Compute the 1D index into the cached* bank arrays once;
* SPRITE_ROUTINE_INDEX (spriteInternal.h) owns the multiply-free
* derivation. */
cacheIdx = SPRITE_ROUTINE_INDEX(shift, SPRITE_OP_SAVE);
cachedDst = (uint8_t *)sp->cachedDstBank + cacheIdx;
cachedSrc = (uint8_t *)sp->cachedSrcBank + cacheIdx;
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
// Patch the MVN bank operands only if the dst/src bank pair changed since
// last call (the routine's only dynamic bytes). SAVE copies screen ->
// backup: dst = backup bank, src = screen bank.
if (*cachedDst != backupBank || *cachedSrc != screenBank) {
routine = (uint8_t *)fnAddr;
patchMvnBanks(routine, heightPx, /*dst*/backupBank, /*src*/screenBank);
*cachedDst = backupBank;
*cachedSrc = screenBank;
}
// Clean C-ABI dispatch -- void save(uint32_t packed), packed = srcOff |
// (dstOff << 16). The compiler emits the indirect JSL: no self-modifying
// call stub, no inline asm. SAVE: src = screen offset, dst = backup offset.
{
uint32_t packed = (uint32_t)screenLo | ((uint32_t)backupLo << 16);
((void (*)(uint32_t))fnAddr)(packed);
}
}
static inline __attribute__((always_inline)) void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
uint16_t heightPx;
uint16_t screenLo;
uint16_t backupLo;
uint8_t screenBank;
uint8_t backupBank;
uint32_t fnAddr;
uint8_t *routine;
uint8_t *screenPtr;
jlSpriteT *sp;
uint16_t cacheIdx; /* shift * SPRITE_OP_COUNT + SPRITE_OP_RESTORE, computed once */
uint8_t *cachedDst;
uint8_t *cachedSrc;
// shift and routeOffset arrive pre-derived from the
// jlSpriteRestoreUnder gate (#29) -- no per-call re-inference of
// the shift from the backup here.
sp = backup->sprite;
heightPx = backup->height;
screenPtr = (uint8_t *)&dst->pixels[SURFACE_ROW_OFFSET(backup->y) + ((uint16_t)backup->x >> 1)];
SPLIT_POINTER(screenPtr, &screenLo, &screenBank);
SPLIT_POINTER(backup->bytes, &backupLo, &backupBank);
/* Hoist 2D-array indexing -- see save-side comment. */
cacheIdx = SPRITE_ROUTINE_INDEX(shift, SPRITE_OP_RESTORE);
cachedDst = (uint8_t *)sp->cachedDstBank + cacheIdx;
cachedSrc = (uint8_t *)sp->cachedSrcBank + cacheIdx;
fnAddr = codegenArenaBaseAddr()
+ sp->slot->offset
+ (uint32_t)routeOffset;
// Patch the MVN bank operands only if they changed (the routine's only
// dynamic bytes). RESTORE copies backup -> screen: dst = screen bank,
// src = backup bank.
if (*cachedDst != screenBank || *cachedSrc != backupBank) {
routine = (uint8_t *)fnAddr;
patchMvnBanks(routine, heightPx, /*dst*/screenBank, /*src*/backupBank);
*cachedDst = screenBank;
*cachedSrc = backupBank;
}
// Clean C-ABI dispatch -- void restore(uint32_t packed), packed = srcOff |
// (dstOff << 16). RESTORE: src = backup offset, dst = screen offset.
{
uint32_t packed = (uint32_t)backupLo | ((uint32_t)screenLo << 16);
((void (*)(uint32_t))fnAddr)(packed);
}
}
#elif defined(JOEYLIB_PLATFORM_AMIGA)
// Amiga planar dispatchers. spriteEmitPlanar68k.c emits DRAW routines
// with a cdecl(p0, p1, p2, p3) signature that write directly to
// bitplanes, one pre-shifted variant per x % 8 phase (all 8 compiled
// since NATIVE-PERF Phase 1). Compute byteOff = y*40 + x/8 and pass
// plane[i]+byteOff as the 4 plane args. Every caller gate in
// src/core/sprite.c checks routineOffsets[shift][op] !=
// SPRITE_NOT_COMPILED before calling here (#29); anything uncompiled
// (clip, degrade-tier truncation) falls back to the interpreted
// jlpSpriteDrawPlanes / jlpSpriteSavePlanes / jlpSpriteRestorePlanes.
//
// Plane pointers come straight from portData via amigaPlanar.h's
// inline accessor (NATIVE-PERF Phase 2) -- the old jlpSurfacePlanePtr
// cross-TU call cost ~190 cycles PER PLANE, x4 per dispatch. The
// pd == NULL gate preserves the "not a planar surface -> no-op"
// contract those calls provided.
#include "amigaPlanar.h"
static inline __attribute__((always_inline)) void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3);
AmigaPlanarT *pd;
uint16_t byteOff;
DrawFn fn;
pd = amigaSurfacePlanar(dst);
if (pd == NULL) {
return;
}
byteOff = (uint16_t)((uint16_t)y * AMIGA_BYTES_PER_ROW + ((uint16_t)x >> 3));
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff);
}
// Compiled save/restore (NATIVE-PERF Phase 1): the emitted routines are
// cdecl(p0, p1, p2, p3, buf) plane-run copiers over the 16-px-group
// window (bx = x & ~15, nGroups = SPRITE_GROUPS0 + class). shift here
// is the width CLASS from SPRITE_SAVE_CLASS / SPRITE_RESTORE_CLASS,
// not the draw bit-phase. Row displacements are baked into the
// routine; the window's x phase enters only through the plane base
// pointers (byteOff is even by construction -- bx % 16 == 0 -- so the
// emitted move.w/move.l are 68000-legal).
static inline __attribute__((always_inline)) void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3, uint8_t *buf);
AmigaPlanarT *pd;
int16_t bx;
uint16_t nGroups;
uint16_t byteOff;
CopyFn fn;
pd = amigaSurfacePlanar(src);
if (pd == NULL) {
return;
}
bx = (int16_t)(x & ~15);
nGroups = (uint16_t)(SPRITE_GROUPS0(sp->widthPx) + shift);
byteOff = (uint16_t)((uint16_t)y * AMIGA_BYTES_PER_ROW + ((uint16_t)bx >> 3));
backup->x = bx;
backup->y = y;
backup->width = (uint16_t)(nGroups << 4);
backup->height = sp->heightPx;
backup->sizeBytes = (uint16_t)((uint16_t)(nGroups << 3) * sp->heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff, backup->bytes);
}
static inline __attribute__((always_inline)) void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(uint8_t *p0, uint8_t *p1, uint8_t *p2, uint8_t *p3, uint8_t *buf);
AmigaPlanarT *pd;
uint16_t byteOff;
CopyFn fn;
(void)shift;
pd = amigaSurfacePlanar(dst);
if (pd == NULL) {
return;
}
byteOff = (uint16_t)((uint16_t)backup->y * AMIGA_BYTES_PER_ROW + ((uint16_t)backup->x >> 3));
fn = (CopyFn)(codegenArenaBase() + backup->sprite->slot->offset + routeOffset);
fn(pd->planes[0] + byteOff, pd->planes[1] + byteOff, pd->planes[2] + byteOff, pd->planes[3] + byteOff, backup->bytes);
}
#elif defined(JOEYLIB_PLATFORM_ATARIST)
// ST word-interleaved planar runtime dispatch. The JIT routine takes
// one arg: groupBase = pd->base + y*160 + (x>>4)*8 (the address of
// the first 16-pixel group the sprite touches). It walks rows by
// adda.w #160 at the end of each row. Per (row, tile_col, plane) it
// emits up to one move.b / clr.b / andi.b+ori.b / ori.b chain at
// d16(a0).
//
// shift selection (in spriteInternal.h SPRITE_SHIFT_INDEX): the full
// intra-group phase x & 15. Phases 0/8 are the unrolled byte-aligned
// JIT; the 14 sub-byte phases are thunk + pre-shifted data tables
// driven by stSpriteDrawShiftWalker (all compiled since NATIVE-PERF
// Phase 1). Anything uncompiled falls back to jlpSpriteDrawPlanes via
// the caller gates (#29).
// ST word-interleaved row stride: 320 px * 4 planes / 8 bits = 160
// bytes/row. Numerically equal to SURFACE_BYTES_PER_ROW but a distinct
// fact (group-interleaved layout, not chunky), so it gets its own
// name. Each 16-pixel group is 4 plane words = 8 bytes.
#define ST_GROUP_BYTES_PER_ROW (SURFACE_WIDTH * 4 / 8)
#define ST_BYTES_PER_PLANE_GROUP 8u
// Buffer base comes straight from portData via stPlanar.h's inline
// accessor (NATIVE-PERF Phase 2); the pd == NULL gate preserves the
// "not a planar surface -> no-op" contract the old jlpSurfacePlanePtr
// cross-TU call provided.
#include "stPlanar.h"
static inline __attribute__((always_inline)) void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *groupBase);
StPlanarT *pd;
uint8_t *groupBase;
DrawFn fn;
pd = stSurfacePlanar(dst);
if (pd == NULL) {
return;
}
groupBase = pd->base
+ (uint16_t)y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)x >> 4) * ST_BYTES_PER_PLANE_GROUP;
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(groupBase);
}
// Compiled save/restore (NATIVE-PERF Phase 1): the emitted routines are
// cdecl(src, dst) raw-span copiers over the 16-px-group window
// (bx = x & ~15, nGroups = SPRITE_GROUPS0 + class); a group window's
// rows are CONTIGUOUS byte spans in the interleaved layout, so the
// routine is a pure move.l chain with the inter-row stride baked in.
// shift here is the width CLASS, not the draw bit-phase. rowStart is
// always even (bx % 16 == 0, base is long-aligned), so move.l is
// 68000-legal.
static inline __attribute__((always_inline)) void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
StPlanarT *pd;
int16_t bx;
uint16_t nGroups;
uint8_t *rowStart;
CopyFn fn;
pd = stSurfacePlanar(src);
if (pd == NULL) {
return;
}
bx = (int16_t)(x & ~15);
nGroups = (uint16_t)(SPRITE_GROUPS0(sp->widthPx) + shift);
rowStart = pd->base
+ (uint16_t)y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)bx >> 4) * ST_BYTES_PER_PLANE_GROUP;
backup->x = bx;
backup->y = y;
backup->width = (uint16_t)(nGroups << 4);
backup->height = sp->heightPx;
backup->sizeBytes = (uint16_t)((uint16_t)(nGroups << 3) * sp->heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(rowStart, backup->bytes);
}
static inline __attribute__((always_inline)) void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
StPlanarT *pd;
uint8_t *rowStart;
CopyFn fn;
(void)shift;
pd = stSurfacePlanar(dst);
if (pd == NULL) {
return;
}
rowStart = pd->base
+ (uint16_t)backup->y * ST_GROUP_BYTES_PER_ROW
+ (uint16_t)((uint16_t)backup->x >> 4) * ST_BYTES_PER_PLANE_GROUP;
fn = (CopyFn)(codegenArenaBase() + backup->sprite->slot->offset + routeOffset);
fn(backup->bytes, rowStart);
}
#else
static inline __attribute__((always_inline)) void spriteCompiledDraw(jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset) {
typedef void (*DrawFn)(uint8_t *destRow);
uint8_t *destRow;
DrawFn fn;
destRow = &dst->pixels[(uint16_t)y * SURFACE_BYTES_PER_ROW + ((uint16_t)x >> 1)];
fn = (DrawFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(destRow);
}
// x86 / 68k compiled save: bytes are a cdecl
// void copy(const uint8_t *src, uint8_t *dst)
// that walks heightPx rows of copyBytes from screen (stride
// SURFACE_BYTES_PER_ROW) into the contiguous backup buffer. shift and
// routeOffset arrive pre-derived from the dispatcher gate (#29).
static inline __attribute__((always_inline)) void spriteCompiledSaveUnder(const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
int16_t clippedX;
uint16_t heightPx;
uint16_t copyBytes;
uint8_t *screenPtr;
CopyFn fn;
clippedX = (int16_t)(x & ~1);
heightPx = sp->heightPx;
copyBytes = (uint16_t)((sp->widthPx >> 1) + shift); /* shift is x & 1, exactly 0 or 1 */
screenPtr = (uint8_t *)&src->pixels[(uint16_t)y * SURFACE_BYTES_PER_ROW + ((uint16_t)clippedX >> 1)];
backup->sprite = sp;
backup->x = clippedX;
backup->y = y;
backup->width = (uint16_t)(copyBytes << 1);
backup->height = heightPx;
backup->sizeBytes = (uint16_t)(copyBytes * heightPx);
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(screenPtr, backup->bytes);
}
// Mirror of save: caller swaps arg order so the same emitted shape
// drives backup -> screen. The screen-side stride lives inside the
// emitted bytes, so RESTORE has its own routine bytes (stride is
// applied to dst instead of src). routeOffset arrives pre-derived
// from the jlSpriteRestoreUnder gate (#29); shift is unused here (no
// bank-patch cache off-IIgs) but kept for the shared signature.
static inline __attribute__((always_inline)) void spriteCompiledRestoreUnder(jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset) {
typedef void (*CopyFn)(const uint8_t *src, uint8_t *dst);
jlSpriteT *sp;
uint8_t *screenPtr;
CopyFn fn;
(void)shift;
sp = backup->sprite;
screenPtr = (uint8_t *)&dst->pixels[(uint16_t)backup->y * SURFACE_BYTES_PER_ROW + ((uint16_t)backup->x >> 1)];
fn = (CopyFn)(codegenArenaBase() + sp->slot->offset + routeOffset);
fn(backup->bytes, screenPtr);
}
#endif
#endif /* JOEY_SPRITE_DISPATCH_H */

7
src/core/spriteInternal.h
View file

@ -176,9 +176,10 @@ struct jlSpriteT {
// gate-checked entry for the callee's own op; shift feeds the IIgs // gate-checked entry for the callee's own op; shift feeds the IIgs
// bank-patch cache index and the chunky save copyBytes (draw needs // bank-patch cache index and the chunky save copyBytes (draw needs
// neither, so it only takes routeOffset). // neither, so it only takes routeOffset).
void spriteCompiledDraw (jlSurfaceT *dst, const jlSpriteT *sp, int16_t x, int16_t y, uint16_t routeOffset); // The spriteCompiled* runtime dispatchers are always-inline functions
void spriteCompiledSaveUnder (const jlSurfaceT *src, jlSpriteT *sp, int16_t x, int16_t y, jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset); // in spriteDispatch.h, included ONLY by sprite.c (NATIVE-PERF Phase 2
void spriteCompiledRestoreUnder (jlSurfaceT *dst, const jlSpriteBackupT *backup, uint8_t shift, uint16_t routeOffset); // R5) -- no extern declarations here or the static inline definitions
// would conflict.
// Initialize a freshly-allocated jlSpriteT to the uncompiled/default // Initialize a freshly-allocated jlSpriteT to the uncompiled/default
// state (tile-data fields, 0xFF routine-offset fill, bank/size cache // state (tile-data fields, 0xFF routine-offset fill, bank/size cache

8
src/core/surface.c
View file

@ -345,6 +345,14 @@ bool stageAlloc(void) {
#endif #endif
stageDirtyClearAll(); stageDirtyClearAll();
paletteInitDefault(gStage); paletteInitDefault(gStage);
// Fresh stage = fresh SCB/palette; force the first present after
// (re-)init to upload them. The load-time initializers cover the
// first jlInit, but a jlShutdown/jlInit cycle in one process would
// otherwise leave stale false flags and skip the upload
// (NATIVE-PERF Phase 2 R9 -- ports now trust these flags instead
// of memcmp'ing cached SCB/palette mirrors every present).
gStageScbDirty = true;
gStagePaletteDirty = true;
return true; return true;
} }

14
src/core/tile.c
View file

@ -47,7 +47,15 @@ typedef char tileMarkBandProof[(SURFACE_WORD_INDEX(TILE_PIXELS_PER_SIDE) == 2) ?
#ifdef JOEYLIB_PLATFORM_IIGS #ifdef JOEYLIB_PLATFORM_IIGS
#define tileMarkDirty(_pixelY, _bx) iigsMarkDirtyRowsInner((uint16_t)(_pixelY), (uint16_t)((_pixelY) + TILE_PIXELS_PER_SIDE), (uint16_t)((uint16_t)(_bx) << 1), (uint16_t)(((uint16_t)(_bx) << 1) + 1u)) #define tileMarkDirty(_pixelY, _bx) iigsMarkDirtyRowsInner((uint16_t)(_pixelY), (uint16_t)((_pixelY) + TILE_PIXELS_PER_SIDE), (uint16_t)((uint16_t)(_bx) << 1), (uint16_t)(((uint16_t)(_bx) << 1) + 1u))
// Fill/copy/paste FUSE the mark into their stage-arm asm entries on
// the IIgs (port.h jlpTile* macros -> iigsTile*Mark, NATIVE-PERF
// Phase 2 Step D), so their C-side mark compiles out here.
// copyMasked/pasteMono still mark separately via tileMarkDirty.
#define tileMarkDirtyFused(_pixelY, _bx) ((void)0)
#else #else
// On non-IIgs ports nothing fuses the mark, so the "fused" spelling
// is the plain helper.
#define tileMarkDirtyFused(_pixelY, _bx) tileMarkDirty((_pixelY), (_bx))
// Explicit 8-row unroll: gcc-6.5 -O2 keeps the equivalent loop rolled // Explicit 8-row unroll: gcc-6.5 -O2 keeps the equivalent loop rolled
// (8 iterations of compare + spill-reload, ~670 cycles); the d16(An) // (8 iterations of compare + spill-reload, ~670 cycles); the d16(An)
// unroll is ~450. Same widen semantics, row by row, as the loop. // unroll is ~450. Same widen semantics, row by row, as the loop.
@ -198,7 +206,7 @@ void jlTileCopy(jlSurfaceT *dst, uint8_t dstBx, uint8_t dstBy, const jlSurfaceT
// Single op: machine asm/planar override or the generic chunky default. // Single op: machine asm/planar override or the generic chunky default.
jlpTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy); jlpTileCopy(dst, dstBx, dstBy, src, srcBx, srcBy);
if (dst == gStage) { if (dst == gStage) {
tileMarkDirty(TILE_BLOCK_TO_PIXEL(dstBy), dstBx); tileMarkDirtyFused(TILE_BLOCK_TO_PIXEL(dstBy), dstBx);
} }
} }
@ -229,7 +237,7 @@ void jlTileFill(jlSurfaceT *s, uint8_t bx, uint8_t by, uint8_t colorIndex) {
// generic chunky default. // generic chunky default.
jlpTileFill(s, bx, by, colorIndex); jlpTileFill(s, bx, by, colorIndex);
if (s == gStage) { if (s == gStage) {
tileMarkDirty(TILE_BLOCK_TO_PIXEL(by), bx); tileMarkDirtyFused(TILE_BLOCK_TO_PIXEL(by), bx);
} }
} }
@ -244,7 +252,7 @@ void jlTilePaste(jlSurfaceT *dst, uint8_t bx, uint8_t by, const jlTileT *in) {
// Single op: machine asm/planar override or the generic chunky default. // Single op: machine asm/planar override or the generic chunky default.
jlpTilePaste(dst, bx, by, &in->pixels[0]); jlpTilePaste(dst, bx, by, &in->pixels[0]);
if (dst == gStage) { if (dst == gStage) {
tileMarkDirty(TILE_BLOCK_TO_PIXEL(by), bx); tileMarkDirtyFused(TILE_BLOCK_TO_PIXEL(by), bx);
} }
} }

17
src/dos/hal.c
View file

@ -54,10 +54,9 @@ static FILE *gCrashLog = NULL;
// (The old $3DA edge-poll frame-counter state lived here; removed with // (The old $3DA edge-poll frame-counter state lived here; removed with
// the poll-rate-dependent counter itself -- see jlpFrameCount.) // the poll-rate-dependent counter itself -- see jlpFrameCount.)
// Cached palette from the last present. VGA DAC programming is ~768 // VGA DAC programming is ~768 outportb calls; skipped when the core
// outportb calls; skip it when the source palette is unchanged. // gStagePaletteDirty flag (surfaceInternal.h) says the stage palette
static uint16_t gCachedPalette[SURFACE_PALETTE_COUNT][SURFACE_COLORS_PER_PALETTE]; // is unchanged -- see uploadPaletteIfNeeded.
static bool gCacheValid = false;
// Expand LUT for jlpPresent. Maps a 4bpp-packed source byte to the // Expand LUT for jlpPresent. Maps a 4bpp-packed source byte to the
// 2-byte little-endian mode-13h output pair for the current scanline's // 2-byte little-endian mode-13h output pair for the current scanline's
@ -222,13 +221,17 @@ static void installCrashLog(void) {
} }
// `src` is always gStage (jlpPresent's contract), so the core palette
// dirty flag is the change signal, replacing a 512-byte cached-mirror
// memcmp per present (NATIVE-PERF Phase 2 R9). The SCB flag is not
// consumed here: mode 13h has one DAC; the per-line SCB choice is
// applied in the pixel expansion, which reads src->scb directly.
static void uploadPaletteIfNeeded(const jlSurfaceT *src) { static void uploadPaletteIfNeeded(const jlSurfaceT *src) {
if (gCacheValid && memcmp(gCachedPalette, src->palette, sizeof(gCachedPalette)) == 0) { if (!gStagePaletteDirty) {
return; return;
} }
uploadPalette(src); uploadPalette(src);
memcpy(gCachedPalette, src->palette, sizeof(gCachedPalette)); gStagePaletteDirty = false;
gCacheValid = true;
} }

512
src/iigs/joeyDraw.s
View file

@ -1270,6 +1270,43 @@ tpmNibPairIdx:
; transparent's low byte from the stack (@12,s in M=8) during ; transparent's low byte from the stack (@12,s in M=8) during
; setup. [0],y = dst, [4],y = src in the per-byte subroutine. ; setup. [0],y = dst, [4],y = src in the per-byte subroutine.
; ==================================================================== ; ====================================================================
; TMASK_BYTE: one masked byte, expanded inline (NATIVE-PERF Phase 2
; R6). Body identical to the old tmaskByte subroutine; expanding at
; each of the 32 sites deletes the jsr/rts pair (12 cyc x 32 = 384
; cyc/call, ~9% of the op). GAS numeric labels stay local per
; expansion. In: M=8, X=16, Y = byte offset, [0]=dst / [4]=src frame.
.macro TMASK_BYTE
lda [4], y ; A = src byte
cmp tmaskDoubled
beq 9f ; both nibbles == transparent
sta tmaskSrc
and #0xF0
cmp tmaskTHi
beq 7f
sta tmaskOutHi ; src hi (kept in $F0 form)
bra 8f
7:
lda [0], y
and #0xF0
sta tmaskOutHi
8:
lda tmaskSrc
and #0x0F
cmp tmaskTLo
beq 5f
sta tmaskOutLo ; src lo
bra 6f
5:
lda [0], y
and #0x0F
sta tmaskOutLo
6:
lda tmaskOutHi
ora tmaskOutLo
sta [0], y
9:
.endm
.section .text.iigsTileCopyMaskedInner,"ax" .section .text.iigsTileCopyMaskedInner,"ax"
.globl iigsTileCopyMaskedInner .globl iigsTileCopyMaskedInner
iigsTileCopyMaskedInner: iigsTileCopyMaskedInner:
@ -1329,13 +1366,13 @@ iigsTileCopyMaskedInner:
ldy #0 ; byte offset ldy #0 ; byte offset
tmaskRowLoop: tmaskRowLoop:
jsr tmaskByte ; byte 0 TMASK_BYTE ; byte 0
iny iny
jsr tmaskByte ; byte 1 TMASK_BYTE ; byte 1
iny iny
jsr tmaskByte ; byte 2 TMASK_BYTE ; byte 2
iny iny
jsr tmaskByte ; byte 3 TMASK_BYTE ; byte 3
rep #0x20 ; M=16 for arithmetic on Y rep #0x20 ; M=16 for arithmetic on Y
.a16 .a16
@ -1347,7 +1384,11 @@ tmaskRowLoop:
.a8 .a8
dex dex
bne tmaskRowLoop beq tmaskRowsDone
brl tmaskRowLoop ; loop body is 4 inlined
; TMASK_BYTE expansions --
; past 8-bit branch range
tmaskRowsDone:
rep #0x20 ; M=16 before epilogue rep #0x20 ; M=16 before epilogue
.a16 .a16
@ -1361,56 +1402,336 @@ tmaskRowLoop:
plp plp
rtl rtl
; tmaskByte: in M=8 X=16, Y holds byte offset.
; - load src byte
; - if both nibbles transparent: skip ; ====================================================================
; - else: assemble output from src/dst nibbles per nibble's ; NATIVE-PERF Phase 2 Step D (R2): FUSED stage-tile entries.
; non-transparency, store ;
tmaskByte: ; The C tile path used to pay pointer math (far LUT read + s->pixels
; Entered (via JSR from the M=8 row loop) with M=8, X=16. ; double-deref) plus TWO JSLs per stage tile op (op inner + dirty
; Tell the assembler so the immediates below size as 1 ; marker). These entries do all three in ONE JSL: derive the stage
; byte. RTS returns to the still-M=8 row loop, so no ; destination from the pinned stage base ($01:2000, IIGS_STAGE_PIXELS
; width restore is needed here. ; in hal.c) + gRowOffsetLut[by*8] + bx*4, run the op via
; absolute-long,X stores with the stage literal folded into each
; offset, then widen the dirty band via stageTileMark below. The
; jlpTile* macros in port.h gate on s == gStage; non-stage surfaces
; keep taking the pointer-based inners above.
; ====================================================================
; stageTileMark: shared fused dirty-mark tail.
; In: A = bx (word), Y = by (word); M=16, X=16.
; Out: M=16, X=16. Clobbers A, X, Y.
; Widens gStageMinWord/gStageMaxWord rows by*8..by*8+7 to the tile
; band [bx*2, bx*2+1] -- byte compares in M=8 through the same
; DBR-inherited abs,x write path as iigsMarkDirtyRowsInner (the
; proven asm-writes-C-global pattern; see the trailer note).
; ONE shared section for the helper + all three fused entries: the
; multi-seg OMF packer places sections atomically, so the 16-bit jsr
; from each entry to stageTileMark stays same-bank by construction
; (same reason tmaskByte lives inside the copyMasked section; 16-bit
; self-references only resolve intra-segment -- see clang-build.sh).
.section .text.iigsFusedTile,"ax"
.globl stageTileMark
stageTileMark:
asl a ; A = bx*2 = minWord
pha ; park minWord
tya
asl a
asl a
asl a ; A = by*8 = first row
tax
pla ; A = minWord (high byte 0)
sep #0x20
.a8 .a8
.i16 ldy #8 ; row counter (X stays 16-bit)
lda [4], y ; A = src byte stmLoop:
cmp tmaskDoubled cmp gStageMinWord,x
beq tmaskSkip ; both nibbles == transparent bcs stmNoMin ; A >= existing -> already covered
sta gStageMinWord,x ; widen down
sta tmaskSrc stmNoMin:
inc a ; A = maxWord = minWord + 1
; Decide hi nibble. cmp gStageMaxWord,x
and #0xF0 bcc stmNoMax ; A < existing -> already covered
cmp tmaskTHi beq stmNoMax
beq tmaskUseDstHi sta gStageMaxWord,x ; widen up
sta tmaskOutHi ; src hi (kept in $F0 form) stmNoMax:
bra tmaskHiDone dec a ; back to minWord
tmaskUseDstHi: inx
lda [0], y dey
and #0xF0 bne stmLoop
sta tmaskOutHi rep #0x20
tmaskHiDone: .a16
; Decide lo nibble.
lda tmaskSrc
and #0x0F
cmp tmaskTLo
beq tmaskUseDstLo
sta tmaskOutLo ; src lo
bra tmaskLoDone
tmaskUseDstLo:
lda [0], y
and #0x0F
sta tmaskOutLo
tmaskLoDone:
lda tmaskOutHi
ora tmaskOutLo
sta [0], y
tmaskSkip:
rts rts
; ====================================================================
; iigsTileFillMark(uint16_t nibble, uint16_t bx, uint16_t by)
;
; ABI: arg0 nibble (word, pre-masked to 0x0..0xF by the jlpTileFill
; macro) in A; bx @4,s, by @6,s on JSL entry -> @8,s / @10,s
; after php+phb+phd. No D-frame: the destination is reached via
; $012000+off,x (absolute long indexed), X = tile byte offset.
; fillWord = nibble * $1111 derived in asm (PERF-AUDIT #41);
; tileScratchPtrs is free scratch (no src pointer here).
; ====================================================================
.globl iigsTileFillMark
iigsTileFillMark:
php
phb
phd
rep #0x30
.a16
.i16
sta tileScratchPtrs+0 ; nibble
asl a
asl a
asl a
asl a ; nibble << 4
ora tileScratchPtrs+0 ; nibble * 0x11
sta tileScratchPtrs+2
xba ; doubled byte << 8
ora tileScratchPtrs+2 ; nibble * 0x1111 = fillWord
sta tileScratchPtrs+4 ; park fillWord
; dst offset = gRowOffsetLut[by*8] + bx*4
lda 10,s ; by
asl a
asl a
asl a
asl a ; by*16 = (by*8) * 2 = LUT byte index
tax
lda 8,s ; bx
asl a
asl a ; bx*4
clc
adc gRowOffsetLut,x
tax ; X = stage byte offset of tile row 0
lda tileScratchPtrs+4 ; fillWord
sta 0x012000+0,x
sta 0x012000+2,x
sta 0x012000+160,x
sta 0x012000+162,x
sta 0x012000+320,x
sta 0x012000+322,x
sta 0x012000+480,x
sta 0x012000+482,x
sta 0x012000+640,x
sta 0x012000+642,x
sta 0x012000+800,x
sta 0x012000+802,x
sta 0x012000+960,x
sta 0x012000+962,x
sta 0x012000+1120,x
sta 0x012000+1122,x
; fused dirty mark
lda 10,s
tay ; Y = by
lda 8,s ; A = bx
jsr stageTileMark
pld
plb
plp
rtl
; ====================================================================
; iigsTilePasteMark(const uint8_t *srcTilePixels, uint16_t bx, uint16_t by)
;
; ABI: arg0 src in A:X (packed 32-byte tile, stride 4); bx @4,s,
; by @6,s on JSL entry -> @8,s / @10,s after php+phb+phd ->
; @12,s / @14,s after the 4-byte src D-frame (phx+pha). The src
; D-frame comes straight from the registers -- no tileScratchPtrs
; round-trip (the fill-style single-pointer frame). Dst is
; $012000+off,x like iigsTileFillMark.
; ====================================================================
.globl iigsTilePasteMark
iigsTilePasteMark:
php
phb
phd
rep #0x30
.a16
.i16
phx ; src high16 -> 3,s
pha ; src low16 -> 1,s
tsc
inc a
tcd ; [0] = srcTilePixels
; dst offset = gRowOffsetLut[by*8] + bx*4
lda 14,s ; by
asl a
asl a
asl a
asl a
tax
lda 12,s ; bx
asl a
asl a
clc
adc gRowOffsetLut,x
tax ; X = stage byte offset of tile row 0
; 8 rows: src stride 4 via [0],y; dst stride 160 folded
; into the long,x literals.
ldy #0
lda [0], y
sta 0x012000+0,x
ldy #2
lda [0], y
sta 0x012000+2,x
ldy #4
lda [0], y
sta 0x012000+160,x
ldy #6
lda [0], y
sta 0x012000+162,x
ldy #8
lda [0], y
sta 0x012000+320,x
ldy #10
lda [0], y
sta 0x012000+322,x
ldy #12
lda [0], y
sta 0x012000+480,x
ldy #14
lda [0], y
sta 0x012000+482,x
ldy #16
lda [0], y
sta 0x012000+640,x
ldy #18
lda [0], y
sta 0x012000+642,x
ldy #20
lda [0], y
sta 0x012000+800,x
ldy #22
lda [0], y
sta 0x012000+802,x
ldy #24
lda [0], y
sta 0x012000+960,x
ldy #26
lda [0], y
sta 0x012000+962,x
ldy #28
lda [0], y
sta 0x012000+1120,x
ldy #30
lda [0], y
sta 0x012000+1122,x
; fused dirty mark
lda 14,s
tay ; Y = by
lda 12,s ; A = bx
jsr stageTileMark
; drop the src D-frame, restore
tsc
clc
adc #4
tcs
pld
plb
plp
rtl
; ====================================================================
; iigsTileCopyMark(const uint8_t *srcRow0, uint16_t dstBx, uint16_t dstBy)
;
; Same shape as iigsTilePasteMark but the source is a SURFACE row
; (stride 160, any bank -- the jlpTileCopy macro derives it in C
; because src may be any surface), so the [0],y offsets mirror the
; dst deltas. Dst is the stage, derived in asm.
; ====================================================================
.globl iigsTileCopyMark
iigsTileCopyMark:
php
phb
phd
rep #0x30
.a16
.i16
phx ; src high16 -> 3,s
pha ; src low16 -> 1,s
tsc
inc a
tcd ; [0] = srcRow0
; dst offset = gRowOffsetLut[dstBy*8] + dstBx*4
lda 14,s ; dstBy
asl a
asl a
asl a
asl a
tax
lda 12,s ; dstBx
asl a
asl a
clc
adc gRowOffsetLut,x
tax ; X = stage byte offset of tile row 0
; 8 rows: src stride 160 via [0],y; dst stride 160 in
; the long,x literals (parallel offsets = block copy).
ldy #0
lda [0], y
sta 0x012000+0,x
ldy #2
lda [0], y
sta 0x012000+2,x
ldy #160
lda [0], y
sta 0x012000+160,x
ldy #162
lda [0], y
sta 0x012000+162,x
ldy #320
lda [0], y
sta 0x012000+320,x
ldy #322
lda [0], y
sta 0x012000+322,x
ldy #480
lda [0], y
sta 0x012000+480,x
ldy #482
lda [0], y
sta 0x012000+482,x
ldy #640
lda [0], y
sta 0x012000+640,x
ldy #642
lda [0], y
sta 0x012000+642,x
ldy #800
lda [0], y
sta 0x012000+800,x
ldy #802
lda [0], y
sta 0x012000+802,x
ldy #960
lda [0], y
sta 0x012000+960,x
ldy #962
lda [0], y
sta 0x012000+962,x
ldy #1120
lda [0], y
sta 0x012000+1120,x
ldy #1122
lda [0], y
sta 0x012000+1122,x
; fused dirty mark
lda 14,s
tay ; Y = dstBy
lda 12,s ; A = dstBx
jsr stageTileMark
; drop the src D-frame, restore
tsc
clc
adc #4
tcs
pld
plb
plp
rtl
; -------------------------------------------------------------------- ; --------------------------------------------------------------------
; Scratch for the masked-tile inner loop. Lives outside the ; Scratch for the masked-tile inner loop. Lives outside the
@ -1939,6 +2260,93 @@ dpxlDone:
rtl rtl
; ====================================================================
; iigsDrawPixelMark(uint16_t x, uint16_t y, uint16_t nibble)
;
; FUSED stage-only jlDrawPixel (NATIVE-PERF Phase 2 R10): one JSL does
; the single-row dirty widen (word x>>2, row y -- same abs,x
; DBR-inherited write path as iigsMarkDirtyRowsInner) and the nibble
; RMW plot against the pinned stage base ($01:2000 + gRowOffsetLut[y]
; + (x>>1), long,x with the literal folded in). Caller (jlDrawPixel)
; has clipped and owns the s == gStage gate; the batching plotters
; (plotPixelNoMark for lines/circles) stay on iigsDrawPixelInner.
;
; ABI: x in A; y @4,s, nibble @6,s on JSL entry. Frame is php (+1)
; plus the parked x (+2): x @1,s, y @7,s, nibble @9,s. No PHB (DBR
; never written, PERF-AUDIT #53 precedent), no D use. Exits M=16/X=16.
; No intra-asm jsr, so the section is self-contained (cross-section
; 16-bit jsr is a wild jump -- see the fused-tile block note).
; ====================================================================
.section .text.iigsDrawPixelMark,"ax"
.globl iigsDrawPixelMark
iigsDrawPixelMark:
php
rep #0x30
.a16
.i16
pha ; park x; y -> 7,s nib -> 9,s
; --- single-row widen: A still holds x ---
lsr a
lsr a
tay ; Y = wordIdx = x>>2 (<= 79)
lda 7,s ; y
tax ; X = row
tya ; A = wordIdx
sep #0x20
.a8
cmp gStageMinWord,x
bcs dpxmNoMin
sta gStageMinWord,x ; widen down
dpxmNoMin:
cmp gStageMaxWord,x
bcc dpxmNoMax
beq dpxmNoMax
sta gStageMaxWord,x ; widen up
dpxmNoMax:
rep #0x20
.a16
; --- plot: byte offset = gRowOffsetLut[y] + (x>>1) ---
lda 7,s ; y
asl a
tax
lda 1,s ; x
lsr a
clc
adc gRowOffsetLut,x
tax ; X = stage byte offset
sep #0x20
.a8
lda 1,s ; x low byte (parity in LSB)
and #1
bne dpxmOdd
lda 9,s ; nibble -> high half (left pixel)
asl a
asl a
asl a
asl a
sta dpxlNibPart
lda 0x012000,x
and #0x0F
ora dpxlNibPart
sta 0x012000,x
bra dpxmDone
dpxmOdd:
lda 9,s ; nibble -> low half (right pixel)
and #0x0F
sta dpxlNibPart
lda 0x012000,x
and #0xF0
ora dpxlNibPart
sta 0x012000,x
dpxmDone:
rep #0x30
.a16
.i16
pla ; drop parked x
plp
rtl
.section .bss.dpxlNibPart,"aw" .section .bss.dpxlNibPart,"aw"
.globl dpxlNibPart .globl dpxlNibPart
dpxlNibPart: dpxlNibPart: