+++ /dev/null
-/*
- * 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;
- unsigned int *pd = (void *)Pico32xMem->pal_native;
- unsigned int m1 = 0x001f001f;
- unsigned int m2 = 0x03e003e0;
- unsigned int m3 = 0xfc00fc00;
- unsigned int inv = 0;
- int i;
-
- if (invert_prio)
- inv = 0x00200020;
-
- // place prio to LS green bit
- for (i = 0x100/2; i > 0; i--, ps++, pd++) {
- unsigned int t = *ps;
- *pd = (((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10)) ^ inv;
- }
-
- Pico32x.dirty_pal = 0;
-}
-
-// 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 != mdbg && !((t ^ inv) & 0x8000)) { \
- pmd_draw_code; \
- continue; \
- } \
- \
- *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); \
- } \
-}
-
-// 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 == mdbg) \
- *pd = t; \
- else \
- pmd_draw_code; \
- } \
-}
-
-// 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 == mdbg || (t & 0x20)) \
- *pd = t; \
- else \
- pmd_draw_code; \
- } \
- } \
-}
-
-void FinalizeLine32xRGB555(int sh, int line)
-{
- unsigned short *pd = DrawLineDest;
- unsigned short *pal = Pico32xMem->pal_native;
- unsigned char *pmd = HighCol + 8;
- unsigned short *dram, *p32x;
- unsigned char mdbg;
-
- FinalizeLine555(sh, line);
-
- 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
- !(PicoDrawMask & PDRAW_32X_ON))
- {
- return;
- }
-
- dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
- p32x = dram + dram[line];
- mdbg = Pico.video.reg[7] & 0x3f;
-
- if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode
- int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0;
- do_line_dc(pd, p32x, pmd, inv_bit,);
- return;
- }
-
- if (Pico32x.dirty_pal)
- convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
-
- if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode
- 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,);
- }
-}
-
-#define MD_LAYER_CODE \
- *dst = palmd[*pmd]
-
-#define PICOSCAN_PRE \
- PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \
- dst = 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 = PicoDraw2FB + \
- 328 * (lines_sft_offs & 0xff) + 8; \
- unsigned short *palmd = 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 = PicoDraw2FB + \
- 328 * (lines_sft_offs & 0xff) + 8; \
- unsigned short *palmd = 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 = PicoDraw2FB + \
- 328 * (lines_sft_offs & 0xff) + 8; \
- unsigned short *palmd = 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;
-
- 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](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)
-{
-#ifdef _ASM_32X_DRAW
- extern void *Pico32xNativePal;
- Pico32xNativePal = Pico32xMem->pal_native;
-#endif
-
- if (is_on) {
- // use the same layout as alt renderer
- PicoDrawSetInternalBuf(PicoDraw2FB, 328);
- Pico32xDrawMode = only_32x ? PDM32X_32X_ONLY : PDM32X_BOTH;
- } else {
- PicoDrawSetInternalBuf(NULL, 0);
- Pico32xDrawMode = PDM32X_OFF;
- }
-}
-
notaz.gp2x.de / picodrive.git / blobdiff