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Fix the envelope generator

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Co-Authored-By: nukeykt <alexeytf2@gmail.com>
This commit is contained in:
Jasmine Iwanek
2024-07-12 00:46:30 -04:00
parent 5209e949ad
commit 56f50f4ebe
1 changed files with 5 additions and 4 deletions
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9
src/sound/snd_opl_nuked.c
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@@ -170,6 +170,7 @@ typedef struct chip {
uint8_t eg_timerrem;
uint8_t eg_state;
uint8_t eg_add;
uint64_t eg_timer_lo;
uint8_t newm;
uint8_t nts;
uint8_t rhy;
@@ -622,7 +623,7 @@ env_calc(slot_t *slot)
break;
}
} else {
shift = (rate_hi & 0x03) + eg_incstep[rate_lo][slot->dev->timer & 0x03u];
shift = (rate_hi & 0x03) + eg_incstep[rate_lo][slot->dev->eg_timer_lo];
if (shift & 0x04)
shift = 0x03;
if (!shift)
@@ -1438,16 +1439,16 @@ nuked_generate_4ch(void *priv, int32_t *buf4)
dev->vibpos = (dev->vibpos + 1) & 7;
dev->timer++;
dev->eg_add = 0;
if (dev->eg_timer) {
while (shift < 36 && ((dev->eg_timer >> shift) & 1) == 0)
if (dev->eg_state) {
while (shift < 13 && ((dev->eg_timer >> shift) & 1) == 0)
shift++;
if (shift > 12)
dev->eg_add = 0;
else
dev->eg_add = shift + 1;
dev->eg_timer_lo = (uint8_t) (dev->eg_timer & 0x3u);
}
if (dev->eg_timerrem || dev->eg_state) {