+/*
+ * 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);
+int (*PicoScan32xEnd)(unsigned int num);
+int Pico32xDrawMode;
+
static void convert_pal555(int invert_prio)
{
unsigned int *ps = (void *)Pico32xMem->pal;
Pico32x.dirty_pal = 0;
}
-void FinalizeLine32xRGB555(int sh, int line)
-{
- unsigned short *pd = DrawLineDest;
- unsigned short *pal = Pico32xMem->pal_native;
- unsigned char *pb = HighCol + 8;
- unsigned short *dram, *ps, cram0;
- int i;
+// direct color mode
+#define do_line_dc(pd, p32x, pmd, inv, pmd_draw_code) \
+{ \
+ const unsigned int m1 = 0x001f; \
+ const unsigned int m2 = 0x03e0; \
+ const unsigned int m3 = 0x7c00; \
+ int i; \
+ \
+ for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \
+ unsigned short t = *p32x; \
+ if ((*pmd & 0x3f) != mdbg && !((t ^ inv) & 0x8000)) { \
+ pmd_draw_code; \
+ continue; \
+ } \
+ \
+ *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); \
+ } \
+}
- // this is a bit hackish:
- // we swap cram color 0 with color that is used for background,
- // as bg is forced to 0 when we do 32X
- cram0 = Pico.cram[0];
- Pico.cram[0] = Pico.cram[Pico.video.reg[7] & 0x3f];
+// packed pixel mode
+#define do_line_pp(pd, p32x, pmd, pmd_draw_code) \
+{ \
+ unsigned short t; \
+ int i; \
+ for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \
+ t = pal[*(unsigned char *)((long)p32x ^ 1)]; \
+ if ((t & 0x20) || (*pmd & 0x3f) == mdbg) \
+ *pd = t; \
+ else \
+ pmd_draw_code; \
+ } \
+}
- FinalizeLineRGB555(sh, line);
- Pico.cram[0] = cram0;
+// run length mode
+#define do_line_rl(pd, p32x, pmd, pmd_draw_code) \
+{ \
+ unsigned short len, t; \
+ int i; \
+ for (i = 320; i > 0; p32x++) { \
+ t = pal[*p32x & 0xff]; \
+ for (len = (*p32x >> 8) + 1; len > 0 && i > 0; len--, i--, pd++, pmd++) { \
+ if ((*pmd & 0x3f) == mdbg || (t & 0x20)) \
+ *pd = t; \
+ else \
+ pmd_draw_code; \
+ } \
+ } \
+}
- if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 0)
- return; // blanking
+// this is almost never used (Wiz and menu bg gen only)
+void FinalizeLine32xRGB555(int sh, int line, struct PicoEState *est)
+{
+ unsigned short *pd = est->DrawLineDest;
+ unsigned short *pal = Pico32xMem->pal_native;
+ unsigned char *pmd = est->HighCol + 8;
+ unsigned short *dram, *p32x;
+ unsigned char mdbg;
- // XXX: how is 32col mode hadled by real hardware?
- if (!(Pico.video.reg[12] & 1))
- return;
+ FinalizeLine555(sh, line, est);
- if (!(PicoDrawMask & PDRAW_32X_ON))
+ if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 0 || // 32x blanking
+ // XXX: how is 32col mode hadled by real hardware?
+ !(Pico.video.reg[12] & 1) || // 32col mode
+ (Pico.video.debug_p & PVD_KILL_32X))
+ {
return;
+ }
dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
- ps = dram + dram[line];
+ p32x = dram + dram[line];
+ mdbg = Pico.video.reg[7] & 0x3f;
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode
- int inv = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0;
- unsigned int m1 = 0x001f001f;
- unsigned int m2 = 0x03e003e0;
- unsigned int m3 = 0xfc00fc00;
-
- for (i = 320; i > 0; i--, ps++, pd++, pb++) {
- unsigned short t = *ps;
- if (*pb != 0 && !((t ^ inv) & 0x8000))
- continue;
-
- *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10);
- }
+ int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0;
+ do_line_dc(pd, p32x, pmd, inv_bit,);
return;
}
convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode
- unsigned short t;
- for (i = 320/2; i > 0; i--, ps++, pd += 2, pb += 2) {
- t = pal[*ps >> 8];
- if (pb[0] == 0 || (t & 0x20))
- pd[0] = t;
- t = pal[*ps & 0xff];
- if (pb[1] == 0 || (t & 0x20))
- pd[1] = t;
- }
+ unsigned char *p32xb = (void *)p32x;
+ if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT)
+ p32xb++;
+ do_line_pp(pd, p32xb, pmd,);
}
else { // Run Length Mode
- unsigned short len, t;
- for (i = 320; i > 0; ps++) {
- t = pal[*ps & 0xff];
- for (len = (*ps >> 8) + 1; len > 0 && i > 0; len--, i--, pd++, pb++)
- if (*pb == 0 || (t & 0x20))
- *pd = t;
+ do_line_rl(pd, p32x, pmd,);
+ }
+}
+
+#define MD_LAYER_CODE \
+ *dst = palmd[*pmd]
+
+#define PICOSCAN_PRE \
+ PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \
+ dst = Pico.est.DrawLineDest; \
+
+#define PICOSCAN_POST \
+ 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_sft_offs, int mdbg) \
+{ \
+ int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; \
+ unsigned char *pmd = Pico.est.Draw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
+ unsigned short *palmd = Pico.est.HighPal; \
+ unsigned short *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]; \
+ do_line_dc(dst, p32x, pmd, inv_bit, md_code); \
+ post_code; \
+ } \
+} \
+ \
+/* Packed Pixel Mode */ \
+static void do_loop_pp##name(unsigned short *dst, \
+ unsigned short *dram, int lines_sft_offs, int mdbg) \
+{ \
+ unsigned short *pal = Pico32xMem->pal_native; \
+ unsigned char *pmd = Pico.est.Draw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
+ unsigned short *palmd = Pico.est.HighPal; \
+ unsigned char *p32x; \
+ int lines = lines_sft_offs >> 16; \
+ int l; \
+ (void)palmd; \
+ for (l = 0; l < lines; l++, pmd += 8) { \
+ pre_code; \
+ 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_sft_offs, int mdbg) \
+{ \
+ unsigned short *pal = Pico32xMem->pal_native; \
+ unsigned char *pmd = Pico.est.Draw2FB + \
+ 328 * (lines_sft_offs & 0xff) + 8; \
+ unsigned short *palmd = Pico.est.HighPal; \
+ unsigned short *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]; \
+ do_line_rl(dst, p32x, pmd, md_code); \
+ post_code; \
+ } \
+}
+
+#ifdef _ASM_32X_DRAW
+#undef make_do_loop
+#define make_do_loop(name, pre_code, post_code, md_code) \
+extern void do_loop_dc##name(unsigned short *dst, \
+ unsigned short *dram, int lines_offs, int mdbg); \
+extern void do_loop_pp##name(unsigned short *dst, \
+ unsigned short *dram, int lines_offs, int mdbg); \
+extern void do_loop_rl##name(unsigned short *dst, \
+ unsigned short *dram, int lines_offs, int mdbg);
+#endif
+
+make_do_loop(,,,)
+make_do_loop(_md, , , MD_LAYER_CODE)
+make_do_loop(_scan, PICOSCAN_PRE, PICOSCAN_POST, )
+make_do_loop(_scan_md, PICOSCAN_PRE, PICOSCAN_POST, MD_LAYER_CODE)
+
+typedef void (*do_loop_func)(unsigned short *dst, unsigned short *dram, int lines, int mdbg);
+enum { DO_LOOP, DO_LOOP_MD, DO_LOOP_SCAN, DO_LOOP_MD_SCAN };
+
+static const do_loop_func do_loop_dc_f[] = { do_loop_dc, do_loop_dc_md, do_loop_dc_scan, do_loop_dc_scan_md };
+static const do_loop_func do_loop_pp_f[] = { do_loop_pp, do_loop_pp_md, do_loop_pp_scan, do_loop_pp_scan_md };
+static const do_loop_func do_loop_rl_f[] = { do_loop_rl, do_loop_rl_md, do_loop_rl_scan, do_loop_rl_scan_md };
+
+void PicoDraw32xLayer(int offs, int lines, int md_bg)
+{
+ int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL;
+ const do_loop_func *do_loop;
+ unsigned short *dram;
+ int lines_sft_offs;
+ int which_func;
+
+ Pico.est.DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
+ dram = Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
+
+ if (Pico32xDrawMode == PDM32X_BOTH) {
+ if (Pico.m.dirtyPal)
+ PicoDrawUpdateHighPal();
+ }
+
+ if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2)
+ {
+ // Direct Color Mode
+ do_loop = do_loop_dc_f;
+ goto do_it;
+ }
+
+ if (Pico32x.dirty_pal)
+ convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
+
+ if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1)
+ {
+ // Packed Pixel Mode
+ do_loop = do_loop_pp_f;
+ }
+ else
+ {
+ // Run Length Mode
+ do_loop = do_loop_rl_f;
+ }
+
+do_it:
+ 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](Pico.est.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 = Pico.est.Draw2FB + 328 * offs + 8;
+ unsigned short *pal = Pico.est.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 = Pico.est.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 PicoDrawSetOutFormat32x(pdso_t which, int use_32x_line_mode)
+{
+#ifdef _ASM_32X_DRAW
+ extern void *Pico32xNativePal;
+ Pico32xNativePal = Pico32xMem->pal_native;
+#endif
+
+ if (which == PDF_RGB555 && use_32x_line_mode) {
+ // we'll draw via FinalizeLine32xRGB555 (rare)
+ PicoDrawSetInternalBuf(NULL, 0);
+ Pico32xDrawMode = PDM32X_OFF;
+ return;
+ }
+
+ // use the same layout as alt renderer
+ PicoDrawSetInternalBuf(Pico.est.Draw2FB, 328);
+ Pico32xDrawMode = (which == PDF_RGB555) ? PDM32X_32X_ONLY : PDM32X_BOTH;
+}
+
+// vim:shiftwidth=2:ts=2:expandtab
notaz.gp2x.de / picodrive.git / blobdiff