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better phase mod accuracy, optimized panning reg writes

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This commit is contained in:
LTVA1 2024-08-04 12:19:33 +03:00
parent 5b92ee0426
commit 986b64bbf0
2 changed files with 13 additions and 6 deletions
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8
src/engine/platform/sound/sid3.c
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@ -2494,7 +2494,7 @@ void sid3_adsr_clock(sid3_channel_adsr* adsr)
int32_t sid3_adsr_output(sid3_channel_adsr* adsr, int32_t input)
{
return (int32_t)((int64_t)input * (int64_t)adsr->envelope_counter / (int64_t)0xff0000 / (int64_t)8 * (int64_t)adsr->vol / (int64_t)SID3_MAX_VOL); //"/ (int64_t)8" so that there's enough amplitude for all 7 chans!
return (int32_t)((int64_t)input * (int64_t)adsr->envelope_counter / (int64_t)0xff0000 * (int64_t)adsr->vol / (int64_t)SID3_MAX_VOL);
}
void sid3_set_filter_settings(sid3_filter* filt)
@ -2931,7 +2931,7 @@ void sid3_clock(SID3* sid3)
if(ch->flags & SID3_CHAN_ENABLE_PHASE_MOD)
{
ch->accumulator += ch->phase_mod_source == SID3_NUM_CHANNELS - 1 ? ((uint64_t)sid3->wave_channel_output << 19) : ((uint64_t)sid3->channel_output[ch->phase_mod_source] << 19);
ch->accumulator += ch->phase_mod_source == SID3_NUM_CHANNELS - 1 ? ((uint64_t)sid3->wave_channel_output << 18) : ((uint64_t)sid3->channel_output[ch->phase_mod_source] << 18);
}
ch->accumulator &= SID3_ACC_MASK;
@ -2972,8 +2972,8 @@ void sid3_clock(SID3* sid3)
if(!sid3->muted[i])
{
sid3->output_l += output * ch->panning_left / 0xff;
sid3->output_r += output * ch->panning_right / 0xff;
sid3->output_l += output * ch->panning_left / 0x8f0;
sid3->output_r += output * ch->panning_right / 0x8f0;
}
sid3->channel_output[i] = output;