+/*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
#include "../pico_int.h"
int (*PicoScan32xBegin)(unsigned int num);
{ \
unsigned short t; \
int i; \
- for (i = 320/2; i > 0; i--, p32x++) { \
- t = pal[*p32x >> 8]; \
- if (*pmd == mdbg || (t & 0x20)) \
- *pd = t; \
- else \
- pmd_draw_code; \
- pd++; pmd++; \
- t = pal[*p32x & 0xff]; \
- if (*pmd == mdbg || (t & 0x20)) \
+ for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \
+ t = pal[*(unsigned char *)((long)p32x ^ 1)]; \
+ if ((t & 0x20) || *pmd == mdbg) \
*pd = t; \
else \
pmd_draw_code; \
- pd++; pmd++; \
} \
}
convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode
- do_line_pp(pd, p32x, pmd,);
+ unsigned char *p32xb = (void *)p32x;
+ if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT)
+ p32xb++;
+ do_line_pp(pd, p32xb, pmd,);
}
else { // Run Length Mode
do_line_rl(pd, p32x, pmd,);
*dst = palmd[*pmd]
#define PICOSCAN_PRE \
- PicoScan32xBegin(l + (lines_offs & 0xff)); \
+ PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \
dst = DrawLineDest; \
#define PICOSCAN_POST \
- PicoScan32xEnd(l + (lines_offs & 0xff)); \
+ PicoScan32xEnd(l + (lines_sft_offs & 0xff)); \
#define make_do_loop(name, pre_code, post_code, md_code) \
/* Direct Color Mode */ \
static void do_loop_dc##name(unsigned short *dst, \
- unsigned short *dram, int lines_offs, int mdbg) \
+ unsigned short *dram, int lines_sft_offs, int mdbg) \
{ \
int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; \
- unsigned char *pmd = PicoDraw2FB + 328 * 8 + 8; \
+ unsigned char *pmd = PicoDraw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
unsigned short *palmd = HighPal; \
unsigned short *p32x; \
- int lines = lines_offs >> 16; \
+ int lines = lines_sft_offs >> 16; \
int l; \
(void)palmd; \
for (l = 0; l < lines; l++, pmd += 8) { \
\
/* Packed Pixel Mode */ \
static void do_loop_pp##name(unsigned short *dst, \
- unsigned short *dram, int lines_offs, int mdbg) \
+ unsigned short *dram, int lines_sft_offs, int mdbg) \
{ \
unsigned short *pal = Pico32xMem->pal_native; \
- unsigned char *pmd = PicoDraw2FB + 328 * 8 + 8; \
+ unsigned char *pmd = PicoDraw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
unsigned short *palmd = HighPal; \
- unsigned short *p32x; \
- int lines = lines_offs >> 16; \
+ unsigned char *p32x; \
+ int lines = lines_sft_offs >> 16; \
int l; \
(void)palmd; \
for (l = 0; l < lines; l++, pmd += 8) { \
pre_code; \
- p32x = dram + dram[l]; \
+ p32x = (void *)(dram + dram[l]); \
+ p32x += (lines_sft_offs >> 8) & 1; \
do_line_pp(dst, p32x, pmd, md_code); \
post_code; \
} \
\
/* Run Length Mode */ \
static void do_loop_rl##name(unsigned short *dst, \
- unsigned short *dram, int lines_offs, int mdbg) \
+ unsigned short *dram, int lines_sft_offs, int mdbg) \
{ \
unsigned short *pal = Pico32xMem->pal_native; \
- unsigned char *pmd = PicoDraw2FB + 328 * 8 + 8; \
+ unsigned char *pmd = PicoDraw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
unsigned short *palmd = HighPal; \
unsigned short *p32x; \
- int lines = lines_offs >> 16; \
+ int lines = lines_sft_offs >> 16; \
int l; \
(void)palmd; \
for (l = 0; l < lines; l++, pmd += 8) { \
int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL;
const do_loop_func *do_loop;
unsigned short *dram;
+ int lines_sft_offs;
int which_func;
- DrawLineDest = DrawLineDestBase + offs * DrawLineDestIncrement;
+ DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
dram = Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
- if (Pico32xDrawMode == 2) {
+ if (Pico32xDrawMode == PDM32X_BOTH) {
if (Pico.m.dirtyPal)
PicoDrawUpdateHighPal();
}
}
do_it:
- if (Pico32xDrawMode == 2)
+ if (Pico32xDrawMode == PDM32X_BOTH)
which_func = have_scan ? DO_LOOP_MD_SCAN : DO_LOOP_MD;
else
which_func = have_scan ? DO_LOOP_SCAN : DO_LOOP;
+ lines_sft_offs = (lines << 16) | offs;
+ if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT)
+ lines_sft_offs |= 1 << 8;
- do_loop[which_func](DrawLineDest, dram, (lines << 16) | offs, md_bg);
+ do_loop[which_func](DrawLineDest, dram, lines_sft_offs, md_bg);
+}
+
+// mostly unused, games tend to keep 32X layer on
+void PicoDraw32xLayerMdOnly(int offs, int lines)
+{
+ int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL;
+ unsigned short *dst = (void *)((char *)DrawLineDestBase + offs * DrawLineDestIncrement);
+ unsigned char *pmd = PicoDraw2FB + 328 * offs + 8;
+ unsigned short *pal = HighPal;
+ int poffs = 0, plen = 320;
+ int l, p;
+
+ if (!(Pico.video.reg[12] & 1)) {
+ // 32col mode
+ poffs = 32;
+ plen = 256;
+ }
+
+ if (Pico.m.dirtyPal)
+ PicoDrawUpdateHighPal();
+
+ dst += poffs;
+ for (l = 0; l < lines; l++) {
+ if (have_scan) {
+ PicoScan32xBegin(l + offs);
+ dst = DrawLineDest + poffs;
+ }
+ for (p = 0; p < plen; p += 4) {
+ dst[p + 0] = pal[*pmd++];
+ dst[p + 1] = pal[*pmd++];
+ dst[p + 2] = pal[*pmd++];
+ dst[p + 3] = pal[*pmd++];
+ }
+ dst = (void *)((char *)dst + DrawLineDestIncrement);
+ pmd += 328 - plen;
+ if (have_scan)
+ PicoScan32xEnd(l + offs);
+ }
}
void PicoDraw32xSetFrameMode(int is_on, int only_32x)
if (is_on) {
// use the same layout as alt renderer
- PicoDrawSetInternalBuf(PicoDraw2FB + 328*8, 328);
- Pico32xDrawMode = only_32x ? 1 : 2;
+ PicoDrawSetInternalBuf(PicoDraw2FB, 328);
+ Pico32xDrawMode = only_32x ? PDM32X_32X_ONLY : PDM32X_BOTH;
} else {
PicoDrawSetInternalBuf(NULL, 0);
- Pico32xDrawMode = 0;
+ Pico32xDrawMode = PDM32X_OFF;
}
}
notaz.gp2x.de / picodrive.git / blobdiff