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PGXP: census which check refuses a precise-word depth lookup

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Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Matthew Stanley
2026-10-02 11:45:15 -07:00
parent 9594b3d79b
commit 36bea23bd2
3 changed files with 29 additions and 5 deletions
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runtime/include/pgxp.h
+10
View File
@@ -103,6 +103,16 @@ typedef struct PGXPStats {
uint64_t w_valid; /* lookups that also carried a usable depth */
uint64_t produced; /* RTPS/RTPT projections pushed into shadows */
uint64_t swc2_stores; /* GTE reg shadows copied to RAM shadows */
/* pgxp_load_precise_word outcomes (perspective texturing, per vertex):
* which check refused the depth. untracked = no shadow for that address in
* this generation; mismatch = shadow describes a different word; partial =
* only one half carries a projection; no_z = projection without depth. */
uint64_t word_lookups;
uint64_t word_hit;
uint64_t word_untracked;
uint64_t word_mismatch;
uint64_t word_partial;
uint64_t word_no_z;
} PGXPStats;
void pgxp_get_stats(PGXPStats *out);
runtime/src/debug_server.c
+10 -2
View File
@@ -5289,7 +5289,9 @@ static void handle_geom_correction(int id, const char *json)
"\"lookups\":%llu,\"dataflow_hit\":%llu,\"fallback_hit\":%llu,"
"\"native\":%llu,\"value_mismatch\":%llu,\"trunc_reject\":%llu,"
"\"tolerance_reject\":%llu,\"w_valid\":%llu,"
"\"produced\":%llu,\"swc2_stores\":%llu}}",
"\"produced\":%llu,\"swc2_stores\":%llu,"
"\"word\":{\"lookups\":%llu,\"hit\":%llu,\"untracked\":%llu,"
"\"mismatch\":%llu,\"partial\":%llu,\"no_z\":%llu}}}",
id,
gte_geometry_correction_enabled(),
(unsigned)hits,
@@ -5308,7 +5310,13 @@ static void handle_geom_correction(int id, const char *json)
(unsigned long long)ps.tolerance_reject,
(unsigned long long)ps.w_valid,
(unsigned long long)ps.produced,
(unsigned long long)ps.swc2_stores);
(unsigned long long)ps.swc2_stores,
(unsigned long long)ps.word_lookups,
(unsigned long long)ps.word_hit,
(unsigned long long)ps.word_untracked,
(unsigned long long)ps.word_mismatch,
(unsigned long long)ps.word_partial,
(unsigned long long)ps.word_no_z);
}
/* pgxp — live-tune the value-propagation engine for one-toggle isolation runs
runtime/src/pgxp.cpp
+9 -3
View File
@@ -809,12 +809,18 @@ extern "C" void pgxp_test_set_generation(uint32_t gen) { s_gen = gen; }
extern "C" int pgxp_load_precise_word(uint32_t addr, uint32_t packed,
int32_t *x16, int32_t *y16, uint16_t *z) {
if (!s_enabled) return 0;
s_stats.word_lookups++;
PGXPValue *pv = pgxp_ptr(addr);
if (!pv || pv->gen != s_gen || pv->value != packed ||
(pv->flags & PGXP_F_VXY) != PGXP_F_VXY)
if (!pv || pv->gen != s_gen) { s_stats.word_untracked++; return 0; }
if (pv->value != packed) { s_stats.word_mismatch++; return 0; }
if ((pv->flags & PGXP_F_VXY) != PGXP_F_VXY) {
s_stats.word_partial++;
return 0;
}
if (x16) *x16 = pv->x16;
if (y16) *y16 = pv->y16;
if (z) *z = (pv->flags & PGXP_F_VZ) ? pv->z : 0;
return (pv->flags & PGXP_F_VZ) && pv->z != 0;
if (!(pv->flags & PGXP_F_VZ) || pv->z == 0) { s_stats.word_no_z++; return 0; }
s_stats.word_hit++;
return 1;
}