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starkernel: retarget REPL glyph rendering to TTF-TEXT's rasterizer (4.4j)

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font_8x16.c keeps rendering everything through and including POST;
TTF-TEXT's rasterizer takes over at the interactive REPL boundary
(sk_repl()) via a new runtime mode switch, vt100_enable_ttf()
(console_fb_enable_ttf() wrapper), not a compile-time swap -- both
backends coexist in the same binary since boot/POST must stay
font_8x16.c per this item's own done-when.

TTF-TEXT (the FORTH word) isn't directly callable from vt100.c -- VM
stack arguments, different call shape than a one-glyph cell draw. Used
hal/ttf.c's VM-independent primitives directly instead (same rasterizer
TTF-TEXT itself calls underneath), added as a native C helper in
vt100.c. Lazily loads fonts:JetBrainsMono-Regular.ttf and kmallocs a
96-slot raster cache (covers all 95 printable ASCII, no eviction
thrash) on first switch.

Cell geometry changes at the switch (mode-aware cell_w()/cell_h()):
provisional 12x24 TTF cell (600/1000em * 20px = 12px exactly, using
4.4i's confirmed-uniform hmtx advance width) vs font_8x16's fixed 8x16
-- cols/rows re-derived and screen cleared at the switch point, same as
vt100_init() itself does. Final REPL text size is 4.4m's decision, not
this item's.

Also fixes the second call site 4.4i flagged: erase_line_range() now
uses one fb_fill_rect() instead of a per-cell font_8x16-specific blank
glyph draw, consistent with erase_display(2)'s full-screen case.

Three-arch verified: amd64/aarch64/riscv64 all reach ok>, POST
Failed: 0, identical dict-hashes. amd64 screendump shows real
proportional JetBrains Mono letterforms on the REPL tail, visibly
distinct from every prior font_8x16 screenshot.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
2026-08-11 19:56:50 -04:00
co-authored by Claude Sonnet 5
parent 64c20c78eb
commit f729b91a09
18 changed files with 55116 additions and 115 deletions
Download Patch File Download Diff File Expand all files Collapse all files
experiments/bare_metal/latest/amd64.csv
+34 -34
View File
@@ -74,37 +74,37 @@ tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_
73,730000,10000,0,0,134,26,21,4096,1757,0,0,0,65536,0,0,65536,0,0
1,10000,18446744073708831616,0,0,117,4,4,4096,0,0,4895412794951728796,13,65536,0,0,65536,0,0
2,20000,10000,0,0,78,10,7,4096,0,0,0,17,65536,0,0,65536,0,0
3,30000,10000,0,0,101,13,7,4096,0,0,0,21,65536,0,0,65536,0,0
4,40000,10000,0,0,63,19,8,4096,0,0,0,24,65536,0,0,65536,0,0
5,50000,10000,0,0,92,25,8,4096,2,0,0,30,65536,0,0,65536,0,0
6,60000,10000,0,0,64,27,8,4096,2,0,0,34,65536,0,0,65536,0,0
7,70000,10000,0,0,228,32,8,4096,210,0,0,114,65536,0,0,65536,0,0
8,80000,10000,0,0,256,34,9,4096,466,0,0,212,65536,0,0,65536,0,0
9,90000,10000,0,0,256,36,10,4096,722,0,0,304,65536,0,0,65536,0,0
10,100000,10000,0,0,256,36,11,4096,978,0,0,404,65536,0,0,65536,0,0
11,110000,10000,0,0,256,36,11,4096,1234,0,0,500,65536,0,0,65536,0,0
12,120000,10000,0,0,256,36,12,4096,1490,0,0,600,65536,0,0,65536,0,0
13,130000,10000,0,0,256,37,12,4096,1746,0,0,698,65536,0,0,65536,0,0
14,140000,10000,0,0,230,39,12,4096,1949,0,0,774,65536,0,0,65536,0,0
15,150000,10000,0,0,256,39,13,4096,2204,0,0,869,65536,0,0,65536,0,0
16,160000,10000,0,0,256,39,14,4096,2459,0,0,962,65536,0,0,65536,0,0
17,170000,10000,0,0,256,39,15,4096,2713,0,0,1056,65536,0,0,65536,0,0
18,180000,10000,0,0,256,39,15,4096,2969,0,0,1150,65536,0,0,65536,0,0
19,190000,10000,0,0,256,39,16,4096,3224,0,0,1243,65536,0,1,65536,0,0
20,200000,10000,0,0,256,41,17,4096,3480,0,0,1337,65536,0,1,65536,0,0
21,210000,10000,0,0,256,41,17,4096,3736,0,0,1432,65536,0,1,65536,0,0
22,220000,10000,0,0,256,41,18,4096,3992,0,0,1525,65536,0,1,65536,0,0
23,230000,10000,0,0,256,41,19,4096,4096,0,0,1620,65536,0,1,65536,0,0
24,240000,10000,0,0,256,41,20,4096,4096,0,0,1713,65536,0,1,65536,0,0
25,250000,10000,0,0,256,43,20,2048,2048,0,0,1807,65536,0,1,65536,0,0
26,260000,10000,0,0,256,45,21,2048,2048,0,0,1899,65536,0,1,65536,0,0
27,270000,10000,0,0,256,45,22,1024,1024,0,0,1993,65536,0,1,65536,0,0
28,280000,10000,0,0,256,45,23,1024,1024,0,0,2086,65536,0,1,65536,0,0
29,290000,10000,0,0,256,45,24,512,512,0,0,2181,65536,0,1,65536,0,0
30,300000,10000,0,0,256,45,24,512,512,0,0,2275,65536,0,1,65536,0,0
31,310000,10000,0,0,256,45,25,256,256,0,0,2367,65536,0,1,65536,0,0
32,320000,10000,0,0,255,45,26,256,256,0,0,2458,65536,0,1,65536,0,0
33,330000,10000,0,0,256,45,27,256,256,0,0,2551,65536,0,1,65536,0,0
34,340000,10000,0,0,256,45,27,256,256,0,0,2643,65536,0,1,65536,0,0
35,350000,10000,0,0,256,45,28,256,256,0,0,2737,65536,0,1,65536,0,0
36,360000,10000,0,0,256,45,29,256,256,0,0,2830,65536,0,1,65536,0,0
3,30000,10000,0,0,101,13,7,4096,0,0,0,22,65536,0,0,65536,0,0
4,40000,10000,0,0,63,19,8,4096,0,0,0,25,65536,0,0,65536,0,0
5,50000,10000,0,0,92,25,8,4096,2,0,0,31,65536,0,0,65536,0,0
6,60000,10000,0,0,64,27,8,4096,2,0,0,36,65536,0,0,65536,0,0
7,70000,10000,0,0,228,32,8,4096,210,0,0,115,65536,0,0,65536,0,0
8,80000,10000,0,0,256,34,9,4096,466,0,0,209,65536,0,0,65536,0,0
9,90000,10000,0,0,256,36,10,4096,722,0,0,303,65536,0,0,65536,0,0
10,100000,10000,0,0,256,36,11,4096,978,0,0,396,65536,0,0,65536,0,0
11,110000,10000,0,0,256,36,11,4096,1234,0,0,488,65536,0,0,65536,0,0
12,120000,10000,0,0,256,36,12,4096,1490,0,0,581,65536,0,0,65536,0,0
13,130000,10000,0,0,256,37,12,4096,1746,0,0,674,65536,0,0,65536,0,0
14,140000,10000,0,0,230,39,12,4096,1949,0,0,750,65536,0,0,65536,0,0
15,150000,10000,0,0,256,39,13,4096,2204,0,0,844,65536,0,0,65536,0,0
16,160000,10000,0,0,256,39,14,4096,2459,0,0,937,65536,0,0,65536,0,0
17,170000,10000,0,0,256,39,15,4096,2713,0,0,1030,65536,0,0,65536,0,0
18,180000,10000,0,0,256,39,15,4096,2969,0,0,1124,65536,0,0,65536,0,0
19,190000,10000,0,0,256,39,16,4096,3224,0,0,1219,65536,0,1,65536,0,0
20,200000,10000,0,0,256,41,17,4096,3480,0,0,1313,65536,0,1,65536,0,0
21,210000,10000,0,0,256,41,17,4096,3736,0,0,1408,65536,0,1,65536,0,0
22,220000,10000,0,0,256,41,18,4096,3992,0,0,1502,65536,0,1,65536,0,0
23,230000,10000,0,0,256,41,19,4096,4096,0,0,1596,65536,0,1,65536,0,0
24,240000,10000,0,0,256,41,20,4096,4096,0,0,1689,65536,0,1,65536,0,0
25,250000,10000,0,0,256,43,20,2048,2048,0,0,1787,65536,0,1,65536,0,0
26,260000,10000,0,0,256,45,21,2048,2048,0,0,1883,65536,0,1,65536,0,0
27,270000,10000,0,0,256,45,22,1024,1024,0,0,1976,65536,0,1,65536,0,0
28,280000,10000,0,0,256,45,23,1024,1024,0,0,2069,65536,0,1,65536,0,0
29,290000,10000,0,0,256,45,24,512,512,0,0,2162,65536,0,1,65536,0,0
30,300000,10000,0,0,256,45,24,512,512,0,0,2255,65536,0,1,65536,0,0
31,310000,10000,0,0,256,45,25,256,256,0,0,2349,65536,0,1,65536,0,0
32,320000,10000,0,0,255,45,26,256,256,0,0,2440,65536,0,1,65536,0,0
33,330000,10000,0,0,256,45,27,256,256,0,0,2533,65536,0,1,65536,0,0
34,340000,10000,0,0,256,45,27,256,256,0,0,2625,65536,0,1,65536,0,0
35,350000,10000,0,0,256,45,28,256,256,0,0,2719,65536,0,1,65536,0,0
36,360000,10000,0,0,256,45,29,256,256,0,0,2812,65536,0,1,65536,0,0
1 tick_number elapsed_ns tick_interval_ns cache_hits_delta bucket_hits_delta word_executions_delta hot_word_count avg_word_heat_q48 window_width actual_window_size predicted_label_hits jitter_bits apic_ticks time_trust_q48 variance_q48 vm_call_depth_max hera_heat_q48 hermes_heat_q48 artemis_heat_q48
74 73 730000 10000 0 0 134 26 21 4096 1757 0 0 0 65536 0 0 65536 0 0
75 1 10000 18446744073708831616 0 0 117 4 4 4096 0 0 4895412794951728796 13 65536 0 0 65536 0 0
76 2 20000 10000 0 0 78 10 7 4096 0 0 0 17 65536 0 0 65536 0 0
77 3 30000 10000 0 0 101 13 7 4096 0 0 0 21 22 65536 0 0 65536 0 0
78 4 40000 10000 0 0 63 19 8 4096 0 0 0 24 25 65536 0 0 65536 0 0
79 5 50000 10000 0 0 92 25 8 4096 2 0 0 30 31 65536 0 0 65536 0 0
80 6 60000 10000 0 0 64 27 8 4096 2 0 0 34 36 65536 0 0 65536 0 0
81 7 70000 10000 0 0 228 32 8 4096 210 0 0 114 115 65536 0 0 65536 0 0
82 8 80000 10000 0 0 256 34 9 4096 466 0 0 212 209 65536 0 0 65536 0 0
83 9 90000 10000 0 0 256 36 10 4096 722 0 0 304 303 65536 0 0 65536 0 0
84 10 100000 10000 0 0 256 36 11 4096 978 0 0 404 396 65536 0 0 65536 0 0
85 11 110000 10000 0 0 256 36 11 4096 1234 0 0 500 488 65536 0 0 65536 0 0
86 12 120000 10000 0 0 256 36 12 4096 1490 0 0 600 581 65536 0 0 65536 0 0
87 13 130000 10000 0 0 256 37 12 4096 1746 0 0 698 674 65536 0 0 65536 0 0
88 14 140000 10000 0 0 230 39 12 4096 1949 0 0 774 750 65536 0 0 65536 0 0
89 15 150000 10000 0 0 256 39 13 4096 2204 0 0 869 844 65536 0 0 65536 0 0
90 16 160000 10000 0 0 256 39 14 4096 2459 0 0 962 937 65536 0 0 65536 0 0
91 17 170000 10000 0 0 256 39 15 4096 2713 0 0 1056 1030 65536 0 0 65536 0 0
92 18 180000 10000 0 0 256 39 15 4096 2969 0 0 1150 1124 65536 0 0 65536 0 0
93 19 190000 10000 0 0 256 39 16 4096 3224 0 0 1243 1219 65536 0 1 65536 0 0
94 20 200000 10000 0 0 256 41 17 4096 3480 0 0 1337 1313 65536 0 1 65536 0 0
95 21 210000 10000 0 0 256 41 17 4096 3736 0 0 1432 1408 65536 0 1 65536 0 0
96 22 220000 10000 0 0 256 41 18 4096 3992 0 0 1525 1502 65536 0 1 65536 0 0
97 23 230000 10000 0 0 256 41 19 4096 4096 0 0 1620 1596 65536 0 1 65536 0 0
98 24 240000 10000 0 0 256 41 20 4096 4096 0 0 1713 1689 65536 0 1 65536 0 0
99 25 250000 10000 0 0 256 43 20 2048 2048 0 0 1807 1787 65536 0 1 65536 0 0
100 26 260000 10000 0 0 256 45 21 2048 2048 0 0 1899 1883 65536 0 1 65536 0 0
101 27 270000 10000 0 0 256 45 22 1024 1024 0 0 1993 1976 65536 0 1 65536 0 0
102 28 280000 10000 0 0 256 45 23 1024 1024 0 0 2086 2069 65536 0 1 65536 0 0
103 29 290000 10000 0 0 256 45 24 512 512 0 0 2181 2162 65536 0 1 65536 0 0
104 30 300000 10000 0 0 256 45 24 512 512 0 0 2275 2255 65536 0 1 65536 0 0
105 31 310000 10000 0 0 256 45 25 256 256 0 0 2367 2349 65536 0 1 65536 0 0
106 32 320000 10000 0 0 255 45 26 256 256 0 0 2458 2440 65536 0 1 65536 0 0
107 33 330000 10000 0 0 256 45 27 256 256 0 0 2551 2533 65536 0 1 65536 0 0
108 34 340000 10000 0 0 256 45 27 256 256 0 0 2643 2625 65536 0 1 65536 0 0
109 35 350000 10000 0 0 256 45 28 256 256 0 0 2737 2719 65536 0 1 65536 0 0
110 36 360000 10000 0 0 256 45 29 256 256 0 0 2830 2812 65536 0 1 65536 0 0