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core+gp2x+psp, fix handling mid-frame palette changes

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This commit is contained in:
kub 2021-11-10 23:06:08 +01:00
parent d05e2eb3d6
commit ace184013b
8 changed files with 82 additions and 51 deletions
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5
pico/sms.c
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@ -56,18 +56,19 @@ static void vdp_data_write(unsigned char d)
struct PicoVideo *pv = &Pico.video;
if (pv->type == 3) {
// cram. 32 on SMS, but 64 on MD. Fill 2nd half of cram for prio bit mirror
if (Pico.m.hardware & 0x1) { // GG, same layout as MD
unsigned a = pv->addr & 0x3f;
if (a & 0x1) { // write complete color on high byte write
u16 c = ((d&0x0f) << 8) | Pico.ms.vdp_buffer;
if (PicoMem.cram[a >> 1] != c) Pico.m.dirtyPal = 1;
PicoMem.cram[a >> 1] = c;
PicoMem.cram[a >> 1] = PicoMem.cram[(a >> 1)+0x20] = c;
}
} else { // SMS, convert to MD layout (00BbGgRr to 0000BbBbGgGgRrRr)
unsigned a = pv->addr & 0x1f;
u16 c = ((d&0x30)<<6) + ((d&0x0c)<<4) + ((d&0x03)<<2);
if (PicoMem.cram[a] != (c | (c>>2))) Pico.m.dirtyPal = 1;
PicoMem.cram[a] = c | (c>>2);
PicoMem.cram[a] = PicoMem.cram[a+0x20] = c | (c>>2);
}
} else {
PicoMem.vramb[MEM_LE2(pv->addr)] = d;