mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
reworked palette and buffer handling due to some 32X bugs
This commit is contained in:
kub
parent
23eef37f25
commit
b1a047c926
13 changed files with 236 additions and 130 deletions
135
pico/draw.c
135
pico/draw.c
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@ -1239,6 +1239,49 @@ void BackFill(int reg7, int sh, struct PicoEState *est)
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// --------------------------------------------
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void PicoDoHighPal555_8bit(int sh, int line, struct PicoEState *est)
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{
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unsigned int *spal, *dpal;
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unsigned int cnt = (sh ? 1 : est->SonicPalCount+1);
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unsigned int t, i;
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// reset dirty only if there are no outstanding changes
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if (Pico.m.dirtyPal == 2)
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Pico.m.dirtyPal = 0;
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// In Sonic render mode palettes were backuped in SonicPal
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spal = (void *)est->SonicPal;
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dpal = (void *)est->HighPal;
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// additional palettes stored after in-frame changes
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for (i = 0; i < cnt * 0x40 / 2; i++) {
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t = spal[i];
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#ifdef USE_BGR555
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t = ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4);
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#else
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t = ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7);
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#endif
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// treat it like it was 4-bit per channel, since in s/h mode it somewhat is that.
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// otherwise intensity difference between this and s/h will be wrong
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t |= (t >> 4) & 0x08610861; // 0x18e318e3
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dpal[i] = t;
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}
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// norm: xxx0, sh: 0xxx, hi: 0xxx + 7
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if (sh)
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{
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// shadowed pixels
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for (i = 0; i < 0x40 / 2; i++)
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dpal[0x40/2 | i] = dpal[0xc0/2 | i] = (dpal[i] >> 1) & 0x738e738e;
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// hilighted pixels
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for (i = 0; i < 0x40 / 2; i++) {
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t = ((dpal[i] >> 1) & 0x738e738e) + 0x738e738e; // 0x7bef7bef;
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t |= (t >> 4) & 0x08610861;
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dpal[0x80/2 | i] = t;
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}
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}
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}
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#ifndef _ASM_DRAW_C
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void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
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{
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@ -1285,8 +1328,7 @@ void FinalizeLine555(int sh, int line, struct PicoEState *est)
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unsigned short *pal=est->HighPal;
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int len;
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if (Pico.m.dirtyPal)
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PicoDoHighPal555(sh, line, est);
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PicoDrawUpdateHighPal();
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if (Pico.video.reg[12]&1) {
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len = 320;
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@ -1315,22 +1357,21 @@ void FinalizeLine555(int sh, int line, struct PicoEState *est)
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static void FinalizeLine8bit(int sh, int line, struct PicoEState *est)
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{
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unsigned char *pd = est->DrawLineDest;
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int len, rs = est->rendstatus;
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static int dirty_count;
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int len;
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static int dirty_line;
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if (!sh && Pico.m.dirtyPal == 1)
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if (Pico.m.dirtyPal == 1)
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{
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// a hack for mid-frame palette changes
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if (!(rs & PDRAW_SONIC_MODE))
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dirty_count = 1;
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else dirty_count++;
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rs |= PDRAW_SONIC_MODE;
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est->rendstatus = rs;
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if (dirty_count == 3) {
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blockcpy(est->HighPal, PicoMem.cram, 0x40*2);
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} else if (dirty_count == 11) {
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blockcpy(est->HighPal+0x40, PicoMem.cram, 0x40*2);
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if (!(est->rendstatus & PDRAW_SONIC_MODE) || line - dirty_line > 4) {
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// store a maximum of 3 additional palettes in SonicPal
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if (est->SonicPalCount < 3)
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est->SonicPalCount ++;
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dirty_line = line;
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est->rendstatus |= PDRAW_SONIC_MODE;
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}
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blockcpy(est->SonicPal+est->SonicPalCount*0x40, PicoMem.cram, 0x40*2);
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Pico.m.dirtyPal = 2;
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}
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if (Pico.video.reg[12]&1) {
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@ -1341,12 +1382,9 @@ static void FinalizeLine8bit(int sh, int line, struct PicoEState *est)
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len = 256;
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}
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if (!sh && (rs & PDRAW_SONIC_MODE)) {
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if (dirty_count >= 11) {
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blockcpy_or(pd, est->HighCol+8, len, 0x80);
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} else {
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blockcpy_or(pd, est->HighCol+8, len, 0x40);
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}
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if (!sh && (est->rendstatus & PDRAW_SONIC_MODE)) {
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// select active backup palette
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blockcpy_or(pd, est->HighCol+8, len, est->SonicPalCount*0x40);
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} else {
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blockcpy(pd, est->HighCol+8, len);
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}
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@ -1478,6 +1516,7 @@ static int DrawDisplay(int sh)
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PICO_INTERNAL void PicoFrameStart(void)
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{
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int offs = 8, lines = 224;
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int dirty = ((Pico.est.rendstatus & PDRAW_SONIC_MODE) || Pico.m.dirtyPal);
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// prepare to do this frame
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Pico.est.rendstatus = 0;
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@ -1503,11 +1542,16 @@ PICO_INTERNAL void PicoFrameStart(void)
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Pico.est.DrawScanline = 0;
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skip_next_line = 0;
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if (FinalizeLine == FinalizeLine8bit) {
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// make a backup of the current palette in case Sonic mode is detected later
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Pico.est.SonicPalCount = 0;
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Pico.m.dirtyPal = (dirty ? 2 : 0); // mark as dirty but already copied
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blockcpy(Pico.est.SonicPal, PicoMem.cram, 0x40*2);
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}
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if (PicoIn.opt & POPT_ALT_RENDERER)
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return;
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if (Pico.m.dirtyPal)
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Pico.m.dirtyPal = 2; // reset dirty if needed
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PrepareSprites(1);
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}
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@ -1598,15 +1642,21 @@ void PicoDrawSync(int to, int blank_last_line)
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void PicoDrawUpdateHighPal(void)
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{
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struct PicoEState *est = &Pico.est;
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int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
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if (PicoIn.opt & POPT_ALT_RENDERER)
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sh = 0; // no s/h support
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if (Pico.m.dirtyPal) {
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int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
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if ((PicoIn.opt & POPT_ALT_RENDERER) | (est->rendstatus & PDRAW_SONIC_MODE))
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sh = 0; // no s/h support
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PicoDoHighPal555(sh, 0, &Pico.est);
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if (est->rendstatus & PDRAW_SONIC_MODE) {
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// FIXME?
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memcpy(est->HighPal + 0x40, est->HighPal, 0x40*2);
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memcpy(est->HighPal + 0x80, est->HighPal, 0x40*2);
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if (FinalizeLine == FinalizeLine8bit)
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PicoDoHighPal555_8bit(sh, 0, est);
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else
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PicoDoHighPal555(sh, 0, est);
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// cover for sprite priority bits if not in s/h or sonic mode
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if (!sh && !(est->rendstatus & PDRAW_SONIC_MODE)) {
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blockcpy(est->HighPal+0x40, est->HighPal, 0x40*2);
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blockcpy(est->HighPal+0x80, est->HighPal, 0x80*2);
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}
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}
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}
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@ -1629,17 +1679,33 @@ void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode)
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FinalizeLine = NULL;
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break;
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}
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PicoDrawSetOutFormat32x(which, use_32x_line_mode);
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if (PicoIn.AHW & PAHW_32X)
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PicoDrawSetOutFormat32x(which, use_32x_line_mode);
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PicoDrawSetOutputMode4(which);
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rendstatus_old = -1;
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}
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void PicoDrawSetOutBufMD(void *dest, int increment)
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{
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if (dest != NULL) {
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DrawLineDestBase = dest;
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DrawLineDestIncrement = increment;
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Pico.est.DrawLineDest = DrawLineDestBase + Pico.est.DrawScanline * increment;
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}
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else {
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DrawLineDestBase = DefOutBuff;
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DrawLineDestIncrement = 0;
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Pico.est.DrawLineDest = DefOutBuff;
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}
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}
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// note: may be called on the middle of frame
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void PicoDrawSetOutBuf(void *dest, int increment)
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{
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DrawLineDestBase = dest;
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DrawLineDestIncrement = increment;
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Pico.est.DrawLineDest = (char *)DrawLineDestBase + Pico.est.DrawScanline * increment;
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if (PicoIn.AHW & PAHW_32X)
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PicoDrawSetOutBuf32X(dest, increment);
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else
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PicoDrawSetOutBufMD(dest, increment);
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}
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void PicoDrawSetInternalBuf(void *dest, int increment)
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@ -1652,6 +1718,7 @@ void PicoDrawSetInternalBuf(void *dest, int increment)
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else {
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HighColBase = DefHighCol;
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HighColIncrement = 0;
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Pico.est.HighCol = DefHighCol;
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}
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}
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