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prepare for possible major optimization

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by just forwarding an output buffer to the dispatch and begin/length,
the number of calls may be reduced which improves performance.
This commit is contained in:
tildearrow 2021-12-06 05:21:42 -05:00
parent 055b4f9c26
commit 6efcfc2e8a
19 changed files with 178 additions and 132 deletions
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64
src/engine/platform/pce.cpp
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@ -13,41 +13,43 @@
#define FREQ_BASE 1712.0f*2
void DivPlatformPCE::acquire(int& l, int& r) {
// PCM part
for (int i=0; i<6; i++) {
if (chan[i].pcm && chan[i].dacSample!=-1) {
if (--chan[i].dacPeriod<1) {
DivSample* s=parent->song.sample[chan[i].dacSample];
chWrite(i,0x07,0);
if (s->depth==8) {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned char)s->rendData[chan[i].dacPos++]+0x80)>>3));
} else {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned short)s->rendData[chan[i].dacPos++]+0x8000)>>11));
void DivPlatformPCE::acquire(short** buf, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
// PCM part
for (int i=0; i<6; i++) {
if (chan[i].pcm && chan[i].dacSample!=-1) {
if (--chan[i].dacPeriod<1) {
DivSample* s=parent->song.sample[chan[i].dacSample];
chWrite(i,0x07,0);
if (s->depth==8) {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned char)s->rendData[chan[i].dacPos++]+0x80)>>3));
} else {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned short)s->rendData[chan[i].dacPos++]+0x8000)>>11));
}
if (chan[i].dacPos>=s->rendLength) {
chan[i].dacSample=-1;
}
chan[i].dacPeriod=chan[i].dacRate;
}
if (chan[i].dacPos>=s->rendLength) {
chan[i].dacSample=-1;
}
chan[i].dacPeriod=chan[i].dacRate;
}
}
}
// PCE part
while (!writes.empty()) {
QueuedWrite w=writes.front();
pce->Write(cycles,w.addr,w.val);
writes.pop();
}
tempL=0; tempR=0;
pce->Update(4);
pce->ResetTS(0);
//printf("tempL: %d tempR: %d\n",tempL,tempR);
l=tempL;
r=tempR;
// PCE part
while (!writes.empty()) {
QueuedWrite w=writes.front();
pce->Write(cycles,w.addr,w.val);
writes.pop();
}
tempL=0; tempR=0;
pce->Update(4);
pce->ResetTS(0);
//printf("tempL: %d tempR: %d\n",tempL,tempR);
buf[0][h]=tempL;
buf[1][h]=tempR;
}
}
void DivPlatformPCE::updateWave(int ch) {