RaySollium99/picodrive
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core vdp, avoid rendering if no changes to RAMs/registers

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mainly benefits 32X in faster/fastest rendering mode, 0-5% saved
This commit is contained in:
kub 2023-04-27 22:18:55 +02:00
parent 0c9c8e4796
commit f9ed944604
6 changed files with 48 additions and 11 deletions
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7
pico/pico_cmn.c
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@ -168,10 +168,12 @@ static int PicoFrameHints(void)
{
// find the right moment for frame renderer, when display is no longer blanked
if ((pv->reg[1]&0x40) || y > 100) {
PicoFrameFull();
if (Pico.est.rendstatus & PDRAW_SYNC_NEEDED)
PicoFrameFull();
#ifdef DRAW_FINISH_FUNC
DRAW_FINISH_FUNC();
#endif
Pico.est.rendstatus &= ~PDRAW_SYNC_NEEDED;
skip = 1;
}
}
@ -191,10 +193,11 @@ static int PicoFrameHints(void)
if (!skip)
{
if (Pico.est.DrawScanline < y)
PicoDrawSync(y - 1, 0, 0);
PicoVideoSync(-1);
#ifdef DRAW_FINISH_FUNC
DRAW_FINISH_FUNC();
#endif
Pico.est.rendstatus &= ~PDRAW_SYNC_NEEDED;
}
#ifdef PICO_32X
p32x_render_frame();