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[picodrive.git] / pico / draw.c
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cff531af 1/*\r
2 * line renderer\r
3 * (c) Copyright Dave, 2004\r
4 * (C) notaz, 2006-2010\r
7bf552b5 5 * (C) irixxxx, 2019-2024\r
cff531af 6 *\r
7 * This work is licensed under the terms of MAME license.\r
8 * See COPYING file in the top-level directory.\r
9 */\r
e5fa9817 10/*\r
11 * The renderer has 4 modes now:\r
12 * - normal\r
13 * - shadow/hilight (s/h)\r
40644bfe 14 * - "sonic mode" for midline palette changes (8bit mode only)\r
15 * - accurate sprites (AS) [+ s/h]\r
e5fa9817 16 *\r
ee3c39ef 17 * s/h uses upper bits for both priority and shadow/hilight flags.\r
e5fa9817 18 * "sonic mode" is autodetected, shadow/hilight is enabled by emulated game.\r
19 * AS is enabled by user and takes priority over "sonic mode".\r
40644bfe 20 *\r
bfa12428 21 * since renderer always draws line in 8bit mode, there are 2 spare bits:\r
6bfa97ff 22 * b \ mode: s/h sonic\r
23 * 00 normal pal index\r
24 * 01 hilight pal index\r
25 * 10 shadow pal index\r
26 * 11 hilight|shadow=normal pal index\r
27 *\r
71a2e205 28 * sprite s/h can only be correctly done after the plane rendering s/h state is\r
29 * known since the s/h result changes if there's at least one high prio plane.\r
6bfa97ff 30 * sprite op rendering is deferred until this is known, and hilight is used as\r
31 * mark since it can't occur before sprite ops:\r
32 * x1 op marker pal index\r
33 *\r
34 * low prio s/h rendering:\r
35 * - plane and non-op sprite pixels have shadow\r
33cb1ab0 36 * - s/h sprite op pixel rendering is marked with hilight (deferred)\r
6bfa97ff 37 * high prio s/h rendering:\r
38 * - plane and non-op sprite pixels are normal\r
33cb1ab0 39 * - all s/h sprite op pixels (either marked or high prio) are rendered\r
bfa12428 40 *\r
40644bfe 41 * not handled properly:\r
33cb1ab0 42 * - high prio s/h sprite op overlapping low prio sprite shows sprite, not A,B,G\r
43 * - in debug sprite-masked, transparent high-prio sprite px don't remove shadow\r
e5fa9817 44 */\r
cc68a136 45\r
efcba75f 46#include "pico_int.h"\r
d5d17782 47#include <platform/common/upscale.h>\r
48\r
6dd553c7 49#define FORCE // layer forcing via debug register?\r
cc68a136 50\r
602133e1 51int (*PicoScanBegin)(unsigned int num) = NULL;\r
52int (*PicoScanEnd) (unsigned int num) = NULL;\r
cc68a136 53\r
ea8c405f 54static unsigned char DefHighCol[8+320+8];\r
7980d477 55unsigned char *HighColBase = DefHighCol;\r
56int HighColIncrement;\r
5a681086 57\r
f821bb70 58static u16 DefOutBuff[320*2] ALIGNED(4);\r
5a681086 59void *DrawLineDestBase = DefOutBuff;\r
60int DrawLineDestIncrement;\r
ea8c405f 61\r
26bc13b8 62static u32 HighCacheA[41*2+1]; // caches for high layers\r
63static u32 HighCacheB[41*2+1];\r
ae9a76c9 64static s32 HighPreSpr[128*2*2]; // slightly preprocessed sprites (2 banks a 128)\r
65static int HighPreSprBank;\r
381eea9b 66\r
ac891449 67u32 VdpSATCache[2*128]; // VDP sprite cache (1st 32 sprite attr bits)\r
25be5c52 68\r
6bfa97ff 69// NB don't change any defines without checking their usage in ASM\r
70\r
16b11d91 71#if defined(USE_BGR555)\r
72#define PXCONV(t) ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<2) | ((t & 0x0e000e00)<<3)\r
73#define PXMASKL 0x04210421 // 0x0c630c63, LSB for all colours\r
74#define PXMASKH 0x39ce39ce // 0x3def3def, all but MSB for all colours\r
cdc6aac4 75#elif defined(USE_BGR565)\r
76#define PXCONV(t) ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4)\r
02d3e670 77#define PXMASKL 0x08410841 // 0x18e318e3\r
cdc6aac4 78#define PXMASKH 0x738e738e // 0x7bef7bef\r
16b11d91 79#else // RGB565\r
80#define PXCONV(t) ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7)\r
02d3e670 81#define PXMASKL 0x08410841 // 0x18e318e3\r
16b11d91 82#define PXMASKH 0x738e738e // 0x7bef7bef\r
83#endif\r
84\r
6bfa97ff 85#define LF_PLANE (1 << 0) // must be = 1\r
e0bcb7a9 86#define LF_SH (1 << 1) // must be = 2\r
71a2e205 87//#define LF_FORCE (1 << 2)\r
3fe92896 88#define LF_LINE (1 << 3) // layer covers line\r
89#define LF_LPRIO (1 << 8) // line has low prio tiles\r
e0bcb7a9 90\r
6bfa97ff 91#define LF_PLANE_A 0\r
92#define LF_PLANE_B 1\r
93\r
fbc65db7 94#define SPRL_HAVE_HI 0x80 // have hi priority sprites\r
95#define SPRL_HAVE_LO 0x40 // *lo*\r
96#define SPRL_MAY_HAVE_OP 0x20 // may have operator sprites on the line\r
97#define SPRL_LO_ABOVE_HI 0x10 // low priority sprites may be on top of hi\r
5f0d224e 98#define SPRL_HAVE_X 0x08 // have sprites with x != 0\r
99#define SPRL_TILE_OVFL 0x04 // tile limit exceeded on previous line\r
100#define SPRL_HAVE_MASK0 0x02 // have sprite with x == 0 in 1st slot\r
101#define SPRL_MASKED 0x01 // lo prio masking by sprite with x == 0 active\r
6bfa97ff 102\r
d515a352 103// sprite cache. stores results of sprite parsing for each display line:\r
104// [visible_sprites_count, sprl_flags, tile_count, sprites_processed, sprite_idx[sprite_count], last_width]\r
105unsigned char HighLnSpr[240][4+MAX_LINE_SPRITES+1];\r
d9fc2fe1 106\r
ea38612f 107int rendstatus_old;\r
ae87bffa 108int rendlines;\r
cc68a136 109\r
602133e1 110static int skip_next_line=0;\r
111\r
cc68a136 112struct TileStrip\r
113{\r
114 int nametab; // Position in VRAM of name table (for this tile line)\r
6d7acf9e 115 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap\r
cc68a136 116 int hscroll; // Horizontal scroll value in pixels for the line\r
117 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap\r
15eed405 118 u32 *hc; // cache for high tile codes and their positions\r
cc68a136 119 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)\r
120};\r
121\r
122// stuff available in asm:\r
123#ifdef _ASM_DRAW_C\r
ea38612f 124void DrawWindow(int tstart, int tend, int prio, int sh,\r
125 struct PicoEState *est);\r
126void DrawAllSprites(unsigned char *sprited, int prio, int sh,\r
127 struct PicoEState *est);\r
15eed405 128void DrawTilesFromCache(u32 *hc, int sh, int rlim,\r
ea38612f 129 struct PicoEState *est);\r
130void DrawSpritesSHi(unsigned char *sprited, struct PicoEState *est);\r
15eed405 131void DrawLayer(int plane_sh, u32 *hcache, int cellskip, int maxcells,\r
ea38612f 132 struct PicoEState *est);\r
7b802576 133void *blockcpy(void *dst, const void *src, size_t n);\r
cc68a136 134void blockcpy_or(void *dst, void *src, size_t n, int pat);\r
135#else\r
136// utility\r
137void blockcpy_or(void *dst, void *src, size_t n, int pat)\r
138{\r
139 unsigned char *pd = dst, *ps = src;\r
d2e3f475 140 if (dst > src) {\r
141 for (pd += n, ps += n; n; n--)\r
142 *--pd = (unsigned char) (*--ps | pat);\r
143 } else\r
144 for (; n; n--)\r
145 *pd++ = (unsigned char) (*ps++ | pat);\r
cc68a136 146}\r
466fa079 147#define blockcpy memmove\r
cc68a136 148#endif\r
149\r
d9e12ee7 150#define TileNormMaker_(pix_func,ret) \\r
07abbab1 151{ \\r
15eed405 152 unsigned char t; \\r
07abbab1 153 \\r
1a08dec0 154 t = (pack&0x0000f000)>>12; pix_func(0); \\r
155 t = (pack&0x00000f00)>> 8; pix_func(1); \\r
156 t = (pack&0x000000f0)>> 4; pix_func(2); \\r
157 t = (pack&0x0000000f) ; pix_func(3); \\r
158 t = (pack&0xf0000000)>>28; pix_func(4); \\r
159 t = (pack&0x0f000000)>>24; pix_func(5); \\r
160 t = (pack&0x00f00000)>>20; pix_func(6); \\r
161 t = (pack&0x000f0000)>>16; pix_func(7); \\r
d9e12ee7 162 return ret; \\r
cc68a136 163}\r
164\r
d9e12ee7 165#define TileFlipMaker_(pix_func,ret) \\r
07abbab1 166{ \\r
15eed405 167 unsigned char t; \\r
07abbab1 168 \\r
1a08dec0 169 t = (pack&0x000f0000)>>16; pix_func(0); \\r
170 t = (pack&0x00f00000)>>20; pix_func(1); \\r
171 t = (pack&0x0f000000)>>24; pix_func(2); \\r
172 t = (pack&0xf0000000)>>28; pix_func(3); \\r
173 t = (pack&0x0000000f) ; pix_func(4); \\r
174 t = (pack&0x000000f0)>> 4; pix_func(5); \\r
175 t = (pack&0x00000f00)>> 8; pix_func(6); \\r
176 t = (pack&0x0000f000)>>12; pix_func(7); \\r
d9e12ee7 177 return ret; \\r
cc68a136 178}\r
cc68a136 179\r
ee3c39ef 180#define TileNormMaker(funcname, pix_func) \\r
15eed405 181static void funcname(unsigned char *pd, unsigned int pack, unsigned char pal) \\r
d9e12ee7 182TileNormMaker_(pix_func,)\r
ee3c39ef 183\r
184#define TileFlipMaker(funcname, pix_func) \\r
15eed405 185static void funcname(unsigned char *pd, unsigned int pack, unsigned char pal) \\r
d9e12ee7 186TileFlipMaker_(pix_func,)\r
ee3c39ef 187\r
188#define TileNormMakerAS(funcname, pix_func) \\r
15eed405 189static unsigned funcname(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal) \\r
d9e12ee7 190TileNormMaker_(pix_func,m)\r
ee3c39ef 191\r
192#define TileFlipMakerAS(funcname, pix_func) \\r
15eed405 193static unsigned funcname(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal) \\r
d9e12ee7 194TileFlipMaker_(pix_func,m)\r
cc68a136 195\r
6bfa97ff 196// draw layer or non-s/h sprite pixels (no operator colors)\r
07abbab1 197#define pix_just_write(x) \\r
15eed405 198 if (likely(t)) pd[x]=pal|t\r
cc68a136 199\r
6bfa97ff 200TileNormMaker(TileNorm, pix_just_write)\r
201TileFlipMaker(TileFlip, pix_just_write)\r
cc68a136 202\r
e352c3af 203#ifndef _ASM_DRAW_C\r
204\r
08bbe7f8 205// draw low prio sprite non-s/h pixels in s/h mode\r
206#define pix_nonsh(x) \\r
15eed405 207 if (likely(t)) { \\r
208 pd[x]=pal|t; \\r
209 if (unlikely(t==0xe)) pd[x]&=~0x80; /* disable shadow for color 14 (hw bug?) */ \\r
210 }\r
08bbe7f8 211\r
212TileNormMaker(TileNormNonSH, pix_nonsh)\r
213TileFlipMaker(TileFlipNonSH, pix_nonsh)\r
214\r
6bfa97ff 215// draw sprite pixels, process operator colors\r
07abbab1 216#define pix_sh(x) \\r
15eed405 217 if (likely(t)) \\r
f821bb70 218 pd[x]=(likely(t<0xe) ? pal|t : pd[x]|((t-1)<<6))\r
e5fa9817 219\r
07abbab1 220TileNormMaker(TileNormSH, pix_sh)\r
221TileFlipMaker(TileFlipSH, pix_sh)\r
cc68a136 222\r
6bfa97ff 223// draw sprite pixels, mark but don't process operator colors\r
40644bfe 224#define pix_sh_markop(x) \\r
15eed405 225 if (likely(t)) \\r
f821bb70 226 pd[x]=(likely(t<0xe) ? pal|t : pd[x]|0x40)\r
cc68a136 227\r
40644bfe 228TileNormMaker(TileNormSH_markop, pix_sh_markop)\r
229TileFlipMaker(TileFlipSH_markop, pix_sh_markop)\r
6c254710 230\r
ee3c39ef 231#endif\r
232\r
6bfa97ff 233// draw low prio sprite operator pixels if visible (i.e. marked)\r
07abbab1 234#define pix_sh_onlyop(x) \\r
15eed405 235 if (unlikely(t>=0xe && (pd[x]&0x40))) \\r
71a2e205 236 pd[x]=(pd[x]&~0x40)|((t-1)<<6)\r
cc68a136 237\r
ee3c39ef 238#ifndef _ASM_DRAW_C\r
239\r
07abbab1 240TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop)\r
241TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop)\r
cc68a136 242\r
e352c3af 243#endif\r
244\r
d9e12ee7 245// AS: sprite mask bits in m shifted to bits 8-15, see DrawSpritesHiAS\r
246\r
6bfa97ff 247// draw high prio sprite pixels (AS)\r
07abbab1 248#define pix_as(x) \\r
15eed405 249 if (likely(t && (m & (1<<(x+8))))) \\r
250 m &= ~(1<<(x+8)), pd[x] = pal|t\r
cc68a136 251\r
ee3c39ef 252TileNormMakerAS(TileNormAS, pix_as)\r
253TileFlipMakerAS(TileFlipAS, pix_as)\r
cc68a136 254\r
6bfa97ff 255// draw high prio sprite pixels, process operator colors (AS)\r
71a2e205 256// NB sprite+planes: h+s->n, h+[nh]->h, s+[nhs]->s, hence mask h before op\r
ee3c39ef 257#define pix_sh_as(x) \\r
15eed405 258 if (likely(t && (m & (1<<(x+8))))) { \\r
d9e12ee7 259 m &= ~(1<<(x+8)); \\r
15eed405 260 pd[x]=(likely(t<0xe) ? pal|t : (pd[x]&~0x40)|((t-1)<<6)); \\r
ee3c39ef 261 }\r
262\r
263TileNormMakerAS(TileNormSH_AS, pix_sh_as)\r
264TileFlipMakerAS(TileFlipSH_AS, pix_sh_as)\r
265\r
6bfa97ff 266// draw only sprite operator pixels (AS)\r
ee3c39ef 267#define pix_sh_as_onlyop(x) \\r
15eed405 268 if (likely(t && (m & (1<<(x+8))))) { \\r
d9e12ee7 269 m &= ~(1<<(x+8)); \\r
ee3c39ef 270 pix_sh_onlyop(x); \\r
271 }\r
cc68a136 272\r
ee3c39ef 273TileNormMakerAS(TileNormSH_AS_onlyop_lp, pix_sh_as_onlyop)\r
274TileFlipMakerAS(TileFlipSH_AS_onlyop_lp, pix_sh_as_onlyop)\r
cc68a136 275\r
6bfa97ff 276// mark low prio sprite pixels (AS)\r
07abbab1 277#define pix_sh_as_onlymark(x) \\r
15eed405 278 if (likely(t)) m &= ~(1<<(x+8))\r
cc68a136 279\r
ee3c39ef 280TileNormMakerAS(TileNormAS_onlymark, pix_sh_as_onlymark)\r
281TileFlipMakerAS(TileFlipAS_onlymark, pix_sh_as_onlymark)\r
cc68a136 282\r
6dd553c7 283#ifdef FORCE\r
71a2e205 284// NB s/h already resolved by non-forced drawing\r
ee3c39ef 285// forced both layer draw (through debug reg)\r
e0bcb7a9 286#define pix_and(x) \\r
15eed405 287 pd[x] &= pal|t\r
e0bcb7a9 288\r
289TileNormMaker(TileNorm_and, pix_and)\r
290TileFlipMaker(TileFlip_and, pix_and)\r
e5fa9817 291\r
2d5b6a66 292// forced sprite draw (through debug reg)\r
71a2e205 293#define pix_sh_as_and(x) \\r
15eed405 294 if (likely(m & (1<<(x+8)))) { \\r
6dd553c7 295 m &= ~(1<<(x+8)); \\r
d515a352 296 /* if (!t) pd[x] |= 0x40; as per titan hw notes? */ \\r
297 pd[x] &= pal|t; \\r
6dd553c7 298 }\r
ae9a76c9 299\r
6dd553c7 300TileNormMakerAS(TileNormSH_AS_and, pix_sh_as_and)\r
301TileFlipMakerAS(TileFlipSH_AS_and, pix_sh_as_and)\r
302#endif\r
2d5b6a66 303\r
cc68a136 304// --------------------------------------------\r
305\r
3fe92896 306#define DrawTile(mask,yshift,ymask,hpcode,cache) { \\r
11a1966b 307 if (code!=oldcode) { \\r
308 oldcode = code; \\r
309 \\r
310 pack = 0; \\r
311 if (code != blank) { \\r
312 /* Get tile address/2: */ \\r
3fe92896 313 u32 addr = ((code<<yshift)&0x7ff0) + ty; \\r
314 if (code & 0x1000) addr ^= ymask<<1; /* Y-flip */ \\r
11a1966b 315 \\r
316 pal = ((code>>9)&0x30) | sh; /* shadow */ \\r
11a1966b 317 pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); \\r
318 if (!pack) \\r
319 blank = code; \\r
320 } \\r
321 } \\r
3fe92896 322 if (cache && (code & 0x8000)) { /* (un-forced) high priority tile */ \\r
11a1966b 323 if (sh | (pack&mask)) { \\r
3fe92896 324 code = hpcode | (dx<<16); \\r
325 if (code & 0x1000) code ^= ymask<<(26+1); /* Y-flip */ \\r
326 *hc++ = code; *hc++ = pack&mask; /* cache it */ \\r
11a1966b 327 } \\r
557aa28c 328 } else { \\r
3fe92896 329 if (cache) lflags |= LF_LPRIO; \\r
557aa28c 330 if (pack&mask) { \\r
331 if (code & 0x0800) TileFlip(pd + dx, pack&mask, pal); \\r
332 else TileNorm(pd + dx, pack&mask, pal); \\r
333 } \\r
11a1966b 334 } \\r
1fad746a 335}\r
336\r
3fe92896 337#define DrawStripMaker(funcname,yshift,ymask,hpcode,drawtile,cache) \\r
338void funcname(struct TileStrip *ts, int lflags, int cellskip) \\r
339{ \\r
340 unsigned char *pd = Pico.est.HighCol; \\r
341 u32 *hc = ts->hc; \\r
342 int tilex, dx, ty, cells; \\r
343 u32 code, oldcode = -1, blank = -1; /* The tile we know is blank */ \\r
344 u32 pal = 0, pack = 0, sh, mask = ~0; \\r
345 \\r
346 /* Draw tiles across screen: */ \\r
347 sh = (lflags & LF_SH) << 6; /* shadow */ \\r
348 tilex=((-ts->hscroll)>>3)+cellskip; \\r
349 ty=(ts->line&ymask)<<1; /* Y-Offset into tile */ \\r
350 dx=((ts->hscroll-1)&7)+1; \\r
351 cells = ts->cells - cellskip; \\r
352 dx+=cellskip<<3; \\r
557aa28c 353 \\r
3fe92896 354/* int force = (plane_sh&LF_FORCE) << 13; */ \\r
355 if (dx & 7) { \\r
356 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; \\r
357/* code &= ~force; *//* forced always draw everything */ \\r
557aa28c 358 \\r
3fe92896 359 mask = 0xffffffff<<((dx&7)*4); \\r
360 if (code & 0x0800) mask = 0xffffffff>>((dx&7)*4); \\r
361 mask = (~mask << 16) | (~mask >> 16); \\r
362 \\r
363 drawtile(mask,yshift,ymask,hpcode | (ty<<26) | (1<<25),cache); \\r
364 dx += 8, tilex++, cells--; \\r
557aa28c 365 } \\r
366 \\r
3fe92896 367 for (; cells > 0; dx+=8, tilex++, cells--) \\r
368 { \\r
369 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; \\r
370/* code &= ~force; *//* forced always draw everything */ \\r
371 \\r
372 if (code != blank || ((code & 0x8000) && sh)) \\r
373 drawtile(~0,yshift,ymask,hpcode | (ty<<26),cache); \\r
374 } \\r
375 \\r
376 if (dx & 7) { \\r
377 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; \\r
378/* code &= ~force; *//* forced always draw everything */ \\r
379 \\r
380 if (code != blank || ((code & 0x8000) && sh)) { \\r
381 mask = 0xffffffff<<((dx&7)*4); \\r
382 if (code & 0x0800) mask = 0xffffffff>>((dx&7)*4); \\r
383 mask = (mask << 16) | (mask >> 16); \\r
384 \\r
385 drawtile(mask,yshift,ymask,hpcode | (ty<<26) | (1<<25),cache); \\r
557aa28c 386 } \\r
387 } \\r
3fe92896 388 \\r
389 /* terminate the cache list */ \\r
390 if (cache) *hc = 0; \\r
391 \\r
392 /* if oldcode wasn't changed, it means all layer is hi priority */ \\r
393 if (cache && (lflags & (LF_LINE|LF_LPRIO)) == LF_LINE) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO; \\r
cc68a136 394}\r
cc68a136 395\r
3fe92896 396#ifndef _ASM_DRAW_C\r
397static DrawStripMaker(DrawStrip, 4, 0x7, code, DrawTile, 1);\r
71a2e205 398\r
3fe92896 399static\r
6d7acf9e 400#endif\r
3fe92896 401 DrawStripMaker(DrawStripInterlace, 5, 0xf, (code&0xfc00) | ((code&0x3ff)<<1), DrawTile, 1);\r
cc68a136 402\r
3fe92896 403// this is messy\r
404#define DrawStripVSRamMaker(funcname,yshift,ymask,hpcode,drawtile,cache) \\r
405void funcname(struct TileStrip *ts, int lflags, int cellskip) \\r
406{ \\r
407 unsigned char *pd = Pico.est.HighCol; \\r
408 u32 *hc = ts->hc; \\r
409 int tilex, dx, ty = 0, cell = 0, nametabadd = 0; \\r
410 u32 code, oldcode = -1, blank = -1; /* The tile we know is blank */ \\r
411 u32 pal = 0, pack = 0, sh, plane, mask; \\r
412 int scan = Pico.est.DrawScanline<<(yshift-4); \\r
11a1966b 413 \\r
3fe92896 414 /* Draw tiles across screen: */ \\r
415 sh = (lflags & LF_SH) << 6; /* shadow */ \\r
416 plane = (lflags & LF_PLANE); /* plane to draw */ \\r
417 tilex=(-ts->hscroll)>>3; \\r
418 dx=((ts->hscroll-1)&7)+1; \\r
419 if (ts->hscroll & 0x0f) { \\r
420 int adj = ((ts->hscroll ^ dx) >> 3) & 1; \\r
421 cell -= adj + 1; \\r
26bc13b8 422 ts->cells -= adj + 1; \\r
3fe92896 423 PicoMem.vsram[0x3e] = PicoMem.vsram[0x3f] = lflags >> 16; \\r
424 } \\r
425 cell+=cellskip; \\r
426 tilex+=cellskip; \\r
427 dx+=cellskip<<3; \\r
11a1966b 428 \\r
3fe92896 429/* int force = (lflags&LF_FORCE) << 13; */ \\r
430 if ((cell&1)==1 || (dx&7)) { \\r
431 int line,vscroll; \\r
432 vscroll = PicoMem.vsram[plane + (cell&0x3e)]; \\r
11a1966b 433 \\r
3fe92896 434 /* Find the line in the name table */ \\r
435 line=(vscroll+scan)&(u16)ts->line; /* ts->line is really ymask, */ \\r
436 nametabadd=(line>>(yshift-1))<<(ts->line>>24); /* and shift[width] */ \\r
437 ty=((line<<(yshift-4))&ymask)<<1; /* Y-Offset into tile */ \\r
438 } \\r
439 if (dx & 7) { \\r
440 code = PicoMem.vram[ts->nametab + nametabadd + (tilex & ts->xmask)]; \\r
441 code |= ty<<26; /* add ty since that can change pixel row for every 2nd tile */ \\r
442/* code &= ~force; *//* forced always draw everything */ \\r
443 \\r
444 mask = 0xffffffff<<((dx&7)*4); \\r
445 if (code & 0x0800) mask = 0xffffffff>>((dx&7)*4); \\r
446 mask = (~mask << 16) | (~mask >> 16); \\r
447 \\r
448 drawtile(mask,yshift,ymask,hpcode | (1<<25),cache); \\r
449 \\r
450 dx += 8, tilex++, cell++; \\r
451 } \\r
452 for (; cell < ts->cells; dx+=8,tilex++,cell++) \\r
453 { \\r
454 if ((cell&1)==0) \\r
455 { \\r
456 int line,vscroll; \\r
457 vscroll = PicoMem.vsram[plane + (cell&0x3e)]; \\r
458 \\r
459 /* Find the line in the name table */ \\r
460 line=(vscroll+scan)&(u16)ts->line; /* ts->line is really ymask, */ \\r
461 nametabadd=(line>>(yshift-1))<<(ts->line>>24); /* and shift[width] */ \\r
462 ty=((line<<(yshift-4))&ymask)<<1; /* Y-Offset into tile */ \\r
11a1966b 463 } \\r
3fe92896 464 \\r
465 code = PicoMem.vram[ts->nametab + nametabadd + (tilex & ts->xmask)]; \\r
466 code |= ty<<26; /* add ty since that can change pixel row for every 2nd tile */ \\r
467/* code &= ~force; *//* forced always draw everything */ \\r
468 \\r
469 if (code != blank || ((code & 0x8000) && sh)) \\r
470 drawtile(~0,yshift,ymask,hpcode,cache); \\r
11a1966b 471 } \\r
3fe92896 472 if (dx & 7) { \\r
473 if ((cell&1)==0) \\r
474 { \\r
475 int line,vscroll; \\r
476 vscroll = PicoMem.vsram[plane + (cell&0x3e)]; \\r
11a1966b 477 \\r
3fe92896 478 /* Find the line in the name table */ \\r
479 line=(vscroll+scan)&(u16)ts->line; /* ts->line is really ymask, */ \\r
480 nametabadd=(line>>(yshift-1))<<(ts->line>>24); /* and shift[width] */ \\r
481 ty=((line<<(yshift-4))&ymask)<<1; /* Y-Offset into tile */ \\r
11a1966b 482 } \\r
3fe92896 483 \\r
484 code = PicoMem.vram[ts->nametab + nametabadd + (tilex & ts->xmask)]; \\r
485 code |= ty<<26; /* add ty since that can change pixel row for every 2nd tile */ \\r
486/* code &= ~force; *//* forced always draw everything */ \\r
487 \\r
488 if (code != blank || ((code & 0x8000) && sh)) { \\r
489 mask = 0xffffffff<<((dx&7)*4); \\r
490 if (code & 0x0800) mask = 0xffffffff>>((dx&7)*4); \\r
491 mask = (mask << 16) | (mask >> 16); \\r
492 \\r
493 drawtile(mask,yshift,ymask,hpcode | (1<<25),cache); \\r
557aa28c 494 } \\r
11a1966b 495 } \\r
3fe92896 496 \\r
497 /* terminate the cache list */ \\r
498 if (cache) *hc = 0; \\r
499 \\r
500 if (cache && (lflags & (LF_LINE|LF_LPRIO)) == LF_LINE) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO; \\r
1fad746a 501}\r
502\r
cc68a136 503#ifndef _ASM_DRAW_C\r
3fe92896 504static DrawStripVSRamMaker(DrawStripVSRam, 4, 0x7, code, DrawTile, 1);\r
505\r
cc68a136 506static\r
507#endif\r
3fe92896 508 DrawStripVSRamMaker(DrawStripVSRamInterlace, 5, 0xf, (code&0xfc00) | ((code&0x3ff)<<1), DrawTile, 1);\r
cc68a136 509\r
510// --------------------------------------------\r
511\r
3fe92896 512#define DrawLayerMaker(funcname,drawstrip,drawstripinterlace,drawstripvsram,drawstripvsraminterlace) \\r
513void funcname(int plane_sh, u32 *hcache, int cellskip, int maxcells, struct PicoEState *est) \\r
514{ \\r
515 struct PicoVideo *pvid=&est->Pico->video; \\r
516 const char shift[4]={5,6,5,7}; /* 32,64 or 128 sized tilemaps (2 is invalid) */ \\r
517 struct TileStrip ts; \\r
518 int width, height, ymask; \\r
519 int vscroll, htab; \\r
520 \\r
521 ts.hc=hcache; \\r
522 ts.cells=maxcells; \\r
523 \\r
524 /* Work out the TileStrip to draw */ \\r
525 \\r
526 /* Work out the name table size: 32 64 or 128 tiles (0-3) */ \\r
527 width=pvid->reg[16]; \\r
528 height=(width>>4)&3; width&=3; \\r
529 \\r
530 ts.xmask=(1<<shift[width])-1; /* X Mask in tiles (0x1f-0x7f) */ \\r
531 ymask=(height<<8)|0xff; /* Y Mask in pixels */ \\r
532 switch (width) { \\r
533 case 1: ymask &= 0x1ff; break; \\r
534 case 2: ymask = 0x007; break; \\r
535 case 3: ymask = 0x0ff; break; \\r
536 } \\r
537 \\r
538 /* Find name table: */ \\r
539 if (plane_sh&LF_PLANE) ts.nametab=(pvid->reg[4]&0x07)<<12; /* B */ \\r
540 else ts.nametab=(pvid->reg[2]&0x38)<< 9; /* A */ \\r
541 \\r
542 htab=pvid->reg[13]<<9; /* Horizontal scroll table address */ \\r
543 switch (pvid->reg[11]&3) { \\r
544 case 1: htab += (est->DrawScanline<<1) & 0x0f; break; \\r
545 case 2: htab += (est->DrawScanline<<1) & ~0x0f; break; /* Offset by tile */ \\r
546 case 3: htab += (est->DrawScanline<<1); break; /* Offset by line */ \\r
547 } \\r
548 htab+=plane_sh&LF_PLANE; /* A or B */ \\r
549 \\r
550 /* Get horizontal scroll value, will be masked later */ \\r
551 ts.hscroll = PicoMem.vram[htab & 0x7fff]; \\r
552 \\r
553 if (likely(!(pvid->reg[11]&4))) { \\r
554 vscroll = PicoMem.vsram[plane_sh&LF_PLANE]; /* Get vertical scroll value */ \\r
555 \\r
556 if(likely((pvid->reg[12]&6) != 6)) { \\r
557 /* Find the line in the name table */ \\r
558 ts.line=(vscroll+est->DrawScanline)&ymask; \\r
559 ts.nametab+=(ts.line>>3)<<shift[width]; \\r
560 \\r
561 drawstrip(&ts, plane_sh, cellskip); \\r
562 } else { \\r
563 /* interlace mode 2 */ \\r
564 \\r
565 /* Find the line in the name table */ \\r
566 ts.line=(vscroll+(est->DrawScanline<<1))&((ymask<<1)|1); \\r
567 ts.nametab+=(ts.line>>4)<<shift[width]; \\r
568 \\r
569 drawstripinterlace(&ts, plane_sh, cellskip); \\r
570 } \\r
571 } else { \\r
572 /* shit, we have 2-cell column based vscroll */ \\r
573 /* luckily this doesn't happen too often */ \\r
574 \\r
575 /* vscroll value for leftmost cells in case of hscroll not on 16px boundary */ \\r
576 /* NB it's unclear what exactly the hw is doing. Continue reading where it */ \\r
577 /* stopped last seems to work best (H40: 0x50 (wrap->0x00), H32 0x40). */ \\r
578 plane_sh |= PicoMem.vsram[(pvid->reg[12]&1?0x00:0x20) + (plane_sh&LF_PLANE)] << 16; \\r
579 \\r
580 if (likely((pvid->reg[12]&6) != 6)) { \\r
581 ts.line=ymask|(shift[width]<<24); /* save some stuff instead of line */ \\r
582 drawstripvsram(&ts, plane_sh, cellskip); \\r
583 } else { \\r
584 ts.line=(ymask<<1)|1|(shift[width]<<24); /* save some stuff instead of line */ \\r
585 drawstripvsraminterlace(&ts, plane_sh, cellskip); \\r
586 } \\r
587 } \\r
cc68a136 588}\r
589\r
3fe92896 590#ifndef _ASM_DRAW_C\r
591static DrawLayerMaker(DrawLayer,DrawStrip,DrawStripInterlace,DrawStripVSRam,DrawStripVSRamInterlace);\r
cc68a136 592\r
593// --------------------------------------------\r
594\r
595// tstart & tend are tile pair numbers\r
ea38612f 596static void DrawWindow(int tstart, int tend, int prio, int sh,\r
597 struct PicoEState *est)\r
cc68a136 598{\r
17c1401b 599 unsigned char *pd = est->HighCol;\r
600 struct PicoVideo *pvid = &est->Pico->video;\r
3fe92896 601 int tilex,ty,nametab,code,oldcode=-1,blank=-1; // The tile we know is blank\r
602 int yshift,ymask;\r
634347ba 603 u32 pack=0, pal=0;\r
3fe92896 604 u32 *hc=NULL, lflags=0; // referenced in DrawTile\r
605\r
606 yshift = 4, ymask = 0x7;\r
607 if(likely((pvid->reg[12]&6) == 6))\r
608 yshift = 5, ymask = 0xf;\r
609 ty=((est->DrawScanline<<(yshift-4))&ymask)<<1; // Y-Offset into tile\r
cc68a136 610\r
611 // Find name table line:\r
612 if (pvid->reg[12]&1)\r
613 {\r
614 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode\r
3fe92896 615 nametab+=(est->DrawScanline>>(yshift-1))<<6;\r
cc68a136 616 }\r
617 else\r
618 {\r
619 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode\r
3fe92896 620 nametab+=(est->DrawScanline>>(yshift-1))<<5;\r
cc68a136 621 }\r
622\r
47677a2a 623 if (prio && !(est->rendstatus & PDRAW_WND_DIFF_PRIO)) {\r
47548249 624 // all tiles processed in low prio pass\r
625 return;\r
cc68a136 626 }\r
627\r
3fe92896 628 tilex=tstart<<1;\r
07abbab1 629 tend<<=1;\r
07abbab1 630\r
cc68a136 631 // Draw tiles across screen:\r
e1191584 632 if (!sh || !prio)\r
cc68a136 633 {\r
e1191584 634 sh = (sh ? 0x80 : 0x00); // sh and low prio -> shadow\r
81fda4e8 635 for (; tilex < tend; tilex++)\r
636 {\r
634347ba 637 int dx;\r
81fda4e8 638\r
88fd63ad 639 code = PicoMem.vram[nametab + tilex];\r
602133e1 640 if ((code>>15) != prio) {\r
47677a2a 641 est->rendstatus |= PDRAW_WND_DIFF_PRIO;\r
81fda4e8 642 continue;\r
643 }\r
cc68a136 644\r
e1191584 645 if (code==blank) continue;\r
1a08dec0 646 dx = 8 + (tilex << 3);\r
3fe92896 647 DrawTile(~0,yshift,ymask,code,0);\r
cc68a136 648 }\r
81fda4e8 649 }\r
650 else\r
651 {\r
e1191584 652 sh = lflags; // sh and high prio -> no shadow (lflags to suppress warning)\r
81fda4e8 653 for (; tilex < tend; tilex++)\r
654 {\r
634347ba 655 int dx;\r
81fda4e8 656\r
88fd63ad 657 code = PicoMem.vram[nametab + tilex];\r
81fda4e8 658 if((code>>15) != prio) {\r
47677a2a 659 est->rendstatus |= PDRAW_WND_DIFF_PRIO;\r
81fda4e8 660 continue;\r
661 }\r
cc68a136 662\r
e1191584 663 // sh and high prio -> clear shadow\r
664 int *zb = (int *)(est->HighCol+8+(tilex<<3));\r
665 *zb++ &= 0x7f7f7f7f;\r
666 *zb &= 0x7f7f7f7f;\r
cc68a136 667\r
e1191584 668 if(code==blank) continue;\r
1a143123 669 dx = 8 + (tilex << 3);\r
3fe92896 670 DrawTile(~0,yshift,ymask,code,0);\r
81fda4e8 671 }\r
cc68a136 672 }\r
cc68a136 673}\r
674\r
675// --------------------------------------------\r
676\r
15eed405 677static void DrawTilesFromCache(u32 *hc, int sh, int rlim, struct PicoEState *est)\r
cc68a136 678{\r
17c1401b 679 unsigned char *pd = est->HighCol;\r
3fe92896 680 u32 code, dx, pack;\r
681 int pal, hs;\r
cc68a136 682\r
557aa28c 683 // *ts->hc++ = code | (dx<<16) | (ty<<26); // cache it\r
cc68a136 684\r
ea38612f 685 if (sh && (est->rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))\r
740da8c6 686 {\r
1fad746a 687 if (!(est->rendstatus & PDRAW_SHHI_DONE)) {\r
688 // as some layer has covered whole line with hi priority tiles,\r
689 // we can process whole line and then act as if sh/hi mode was off,\r
690 // but leave lo pri op sprite markers alone\r
691 int *zb = (int *)(Pico.est.HighCol+8);\r
3fe92896 692 int c = 320 / 4;\r
1fad746a 693 while (c--)\r
694 {\r
695 *zb++ &= 0x7f7f7f7f;\r
696 }\r
697 Pico.est.rendstatus |= PDRAW_SHHI_DONE;\r
698 }\r
740da8c6 699 sh = 0;\r
700 }\r
cc68a136 701\r
81fda4e8 702 if (!sh)\r
740da8c6 703 {\r
7a7c6476 704 while ((code=*hc++)) {\r
47677a2a 705 pack = *hc++;\r
3fe92896 706 dx = (code >> 16) & 0x1ff;\r
1a08dec0 707 pal = ((code >> 9) & 0x30);\r
81fda4e8 708\r
ee3c39ef 709 if (code & 0x0800) TileFlip(pd + dx, pack, pal);\r
710 else TileNorm(pd + dx, pack, pal);\r
cc68a136 711 }\r
740da8c6 712 }\r
713 else\r
714 {\r
7a7c6476 715 while ((code=*hc++)) {\r
81fda4e8 716 unsigned char *zb;\r
1a08dec0 717\r
557aa28c 718 pack = *hc++;\r
3fe92896 719 dx = (code >> 16) & 0x1ff;\r
720 pal = ((code >> 9) & 0x30);\r
557aa28c 721\r
99bdfd31 722 zb = est->HighCol+dx;\r
3fe92896 723 if (likely(~code & (1<<25))) {\r
557aa28c 724 *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f;\r
725 *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f;\r
726 } else {\r
727 hs = dx & 7;\r
728 if (*hc == 0) // last tile?\r
3fe92896 729 switch (8-hs) { case 7: *zb++ &= 0x7f;\r
730 case 6: *zb++ &= 0x7f; case 5: *zb++ &= 0x7f; case 4: *zb++ &= 0x7f;\r
731 case 3: *zb++ &= 0x7f; case 2: *zb++ &= 0x7f; case 1: *zb++ &= 0x7f;\r
732 }\r
733 else { // first tile\r
734 zb += 8-hs;\r
735 switch (hs) { case 7: *zb++ &= 0x7f;\r
736 case 6: *zb++ &= 0x7f; case 5: *zb++ &= 0x7f; case 4: *zb++ &= 0x7f;\r
737 case 3: *zb++ &= 0x7f; case 2: *zb++ &= 0x7f; case 1: *zb++ &= 0x7f;\r
738 }\r
739 }\r
557aa28c 740 }\r
cc68a136 741\r
3fe92896 742 if (pack) {\r
743 if (code & 0x0800) TileFlip(pd + dx, pack, pal);\r
744 else TileNorm(pd + dx, pack, pal);\r
745 }\r
7a7c6476 746 }\r
747 }\r
cc68a136 748}\r
749\r
750// --------------------------------------------\r
751\r
752// Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r
753// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
754\r
b010d7b4 755static void DrawSprite(s32 *sprite, int sh, int w)\r
cc68a136 756{\r
15eed405 757 void (*fTileFunc)(unsigned char *pd, unsigned int pack, unsigned char pal);\r
ee3c39ef 758 unsigned char *pd = Pico.est.HighCol;\r
cc68a136 759 int width=0,height=0;\r
15eed405 760 int row=0;\r
b010d7b4 761 s32 code=0;\r
cc68a136 762 int pal;\r
763 int tile=0,delta=0;\r
764 int sx, sy;\r
cc68a136 765\r
766 // parse the sprite data\r
767 sy=sprite[0];\r
768 code=sprite[1];\r
769 sx=code>>16; // X\r
770 width=sy>>28;\r
771 height=(sy>>24)&7; // Width and height in tiles\r
ae9a76c9 772 sy=(s16)sy; // Y\r
cc68a136 773\r
ea38612f 774 row=Pico.est.DrawScanline-sy; // Row of the sprite we are on\r
cc68a136 775\r
776 if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r
777\r
07abbab1 778 tile=code + (row>>3); // Tile number increases going down\r
cc68a136 779 delta=height; // Delta to increase tile by going right\r
780 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
781\r
07abbab1 782 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address\r
ee4f03ae 783 delta<<=4; // Delta of address\r
07abbab1 784\r
785 pal=(code>>9)&0x30;\r
6bfa97ff 786 pal|=sh<<7; // shadow\r
e5fa9817 787\r
788 if (sh && (code&0x6000) == 0x6000) {\r
40644bfe 789 if(code&0x0800) fTileFunc=TileFlipSH_markop;\r
790 else fTileFunc=TileNormSH_markop;\r
08bbe7f8 791 } else if (sh) {\r
792 if(code&0x0800) fTileFunc=TileFlipNonSH;\r
793 else fTileFunc=TileNormNonSH;\r
e5fa9817 794 } else {\r
795 if(code&0x0800) fTileFunc=TileFlip;\r
796 else fTileFunc=TileNorm;\r
cc68a136 797 }\r
798\r
5f0d224e 799 if (w) width = w; // tile limit\r
cc68a136 800 for (; width; width--,sx+=8,tile+=delta)\r
801 {\r
1a08dec0 802 unsigned int pack;\r
803\r
cc68a136 804 if(sx<=0) continue;\r
805 if(sx>=328) break; // Offscreen\r
806\r
57c5a5e5 807 pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff)));\r
ee3c39ef 808 fTileFunc(pd + sx, pack, pal);\r
cc68a136 809 }\r
810}\r
e5fa9817 811#endif\r
cc68a136 812\r
4cc0fcaf 813static void DrawSpriteInterlace(u32 *sprite)\r
cc68a136 814{\r
ee3c39ef 815 unsigned char *pd = Pico.est.HighCol;\r
cc68a136 816 int width=0,height=0;\r
817 int row=0,code=0;\r
818 int pal;\r
819 int tile=0,delta=0;\r
820 int sx, sy;\r
821\r
822 // parse the sprite data\r
57c5a5e5 823 sy=CPU_LE2(sprite[0]);\r
cc68a136 824 height=sy>>24;\r
825 sy=(sy&0x3ff)-0x100; // Y\r
826 width=(height>>2)&3; height&=3;\r
827 width++; height++; // Width and height in tiles\r
828\r
ea38612f 829 row=(Pico.est.DrawScanline<<1)-sy; // Row of the sprite we are on\r
cc68a136 830\r
57c5a5e5 831 code=CPU_LE2(sprite[1]);\r
cc68a136 832 sx=((code>>16)&0x1ff)-0x78; // X\r
833\r
834 if (code&0x1000) row^=(16<<height)-1; // Flip Y\r
835\r
836 tile=code&0x3ff; // Tile number\r
837 tile+=row>>4; // Tile number increases going down\r
838 delta=height; // Delta to increase tile by going right\r
839 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
840\r
841 tile<<=5; tile+=(row&15)<<1; // Tile address\r
842\r
843 delta<<=5; // Delta of address\r
844 pal=((code>>9)&0x30); // Get palette pointer\r
845\r
846 for (; width; width--,sx+=8,tile+=delta)\r
847 {\r
1a08dec0 848 unsigned int pack;\r
849\r
cc68a136 850 if(sx<=0) continue;\r
851 if(sx>=328) break; // Offscreen\r
852\r
57c5a5e5 853 pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff)));\r
ee3c39ef 854 if (code & 0x0800) TileFlip(pd + sx, pack, pal);\r
855 else TileNorm(pd + sx, pack, pal);\r
cc68a136 856 }\r
857}\r
858\r
859\r
e0bcb7a9 860static NOINLINE void DrawAllSpritesInterlace(int pri, int sh)\r
cc68a136 861{\r
862 struct PicoVideo *pvid=&Pico.video;\r
ea38612f 863 int i,u,table,link=0,sline=Pico.est.DrawScanline<<1;\r
4cc0fcaf 864 u32 *sprites[80]; // Sprite index\r
17c1401b 865 int max_sprites = pvid->reg[12]&1 ? 80 : 64;\r
cc68a136 866\r
867 table=pvid->reg[5]&0x7f;\r
868 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
869 table<<=8; // Get sprite table address/2\r
870\r
5f0d224e 871 for (i = u = 0; u < max_sprites && link < max_sprites; u++)\r
cc68a136 872 {\r
4cc0fcaf 873 u32 *sprite;\r
cc68a136 874 int code, sx, sy, height;\r
875\r
15eed405 876 sprite=(u32 *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
cc68a136 877\r
878 // get sprite info\r
57c5a5e5 879 code = CPU_LE2(sprite[0]);\r
880 sx = CPU_LE2(sprite[1]);\r
cc68a136 881 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite\r
882\r
883 // check if it is on this line\r
884 sy = (code&0x3ff)-0x100;\r
885 height = (((code>>24)&3)+1)<<4;\r
47677a2a 886 if((sline < sy) | (sline >= sy+height)) goto nextsprite; // no\r
cc68a136 887\r
888 // check if sprite is not hidden offscreen\r
889 sx = (sx>>16)&0x1ff;\r
890 sx -= 0x78; // Get X coordinate + 8\r
47677a2a 891 if((sx <= -8*3) | (sx >= 328)) goto nextsprite;\r
cc68a136 892\r
893 // sprite is good, save it's pointer\r
894 sprites[i++]=sprite;\r
895\r
896 nextsprite:\r
897 // Find next sprite\r
898 link=(code>>16)&0x7f;\r
899 if(!link) break; // End of sprites\r
900 }\r
901\r
902 // Go through sprites backwards:\r
903 for (i-- ;i>=0; i--)\r
904 DrawSpriteInterlace(sprites[i]);\r
905}\r
906\r
907\r
908#ifndef _ASM_DRAW_C\r
40644bfe 909/*\r
910 * s/h drawing: lo_layers|40, lo_sprites|40 && mark_op,\r
911 * hi_layers&=~40, hi_sprites\r
912 *\r
913 * Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size\r
914 * Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
915 */\r
ea38612f 916static void DrawSpritesSHi(unsigned char *sprited, const struct PicoEState *est)\r
cc68a136 917{\r
15eed405 918 static void (*tilefuncs[2][2][2])(unsigned char *, unsigned, unsigned char) = {\r
d9e12ee7 919 { {NULL, NULL}, {TileNorm, TileFlip} },\r
920 { {TileNormSH_onlyop_lp, TileFlipSH_onlyop_lp}, {TileNormSH, TileFlipSH} }\r
921 }; // [sh?][hi?][flip?]\r
15eed405 922 void (*fTileFunc)(unsigned char *pd, unsigned int pack, unsigned char pal);\r
ee3c39ef 923 unsigned char *pd = Pico.est.HighCol;\r
ee4f03ae 924 unsigned char *p;\r
5f0d224e 925 int cnt, w;\r
ee4f03ae 926\r
ae9a76c9 927 cnt = sprited[0] & 0x7f;\r
ee4f03ae 928 if (cnt == 0) return;\r
cc68a136 929\r
5f0d224e 930 p = &sprited[4];\r
931 if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0))\r
932 return; // masking effective due to tile overflow\r
cc68a136 933\r
ee4f03ae 934 // Go through sprites backwards:\r
5f0d224e 935 w = p[cnt]; // possibly clipped width of last sprite\r
936 for (cnt--; cnt >= 0; cnt--, w = 0)\r
07abbab1 937 {\r
b010d7b4 938 s32 *sprite, code;\r
15eed405 939 int pal, tile, sx, sy;\r
ee4f03ae 940 int offs, delta, width, height, row;\r
941\r
942 offs = (p[cnt] & 0x7f) * 2;\r
99bdfd31 943 sprite = est->HighPreSpr + offs;\r
ee4f03ae 944 code = sprite[1];\r
945 pal = (code>>9)&0x30;\r
cc68a136 946\r
d9e12ee7 947 fTileFunc = tilefuncs[pal == 0x30][!!(code & 0x8000)][!!(code & 0x800)];\r
948 if (fTileFunc == NULL) continue; // non-operator low sprite, already drawn\r
cc68a136 949\r
ee4f03ae 950 // parse remaining sprite data\r
951 sy=sprite[0];\r
952 sx=code>>16; // X\r
953 width=sy>>28;\r
954 height=(sy>>24)&7; // Width and height in tiles\r
ae9a76c9 955 sy=(s16)sy; // Y\r
ee4f03ae 956\r
ea38612f 957 row=est->DrawScanline-sy; // Row of the sprite we are on\r
ee4f03ae 958\r
959 if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r
960\r
961 tile=code + (row>>3); // Tile number increases going down\r
962 delta=height; // Delta to increase tile by going right\r
963 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
964\r
965 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address\r
966 delta<<=4; // Delta of address\r
967\r
5f0d224e 968 if (w) width = w; // tile limit\r
cc68a136 969 for (; width; width--,sx+=8,tile+=delta)\r
970 {\r
1a08dec0 971 unsigned int pack;\r
972\r
cc68a136 973 if(sx<=0) continue;\r
974 if(sx>=328) break; // Offscreen\r
975\r
57c5a5e5 976 pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff)));\r
ee3c39ef 977 fTileFunc(pd + sx, pack, pal);\r
cc68a136 978 }\r
979 }\r
980}\r
f8af9634 981#endif // !_ASM_DRAW_C\r
cc68a136 982\r
fbc65db7 983static void DrawSpritesHiAS(unsigned char *sprited, int sh)\r
e5fa9817 984{\r
15eed405 985 static unsigned (*tilefuncs[2][2][2])(unsigned, unsigned char *, unsigned, unsigned char) = {\r
d9e12ee7 986 { {TileNormAS_onlymark, TileFlipAS_onlymark}, {TileNormAS, TileFlipAS} },\r
987 { {TileNormSH_AS_onlyop_lp, TileFlipSH_AS_onlyop_lp}, {TileNormSH_AS, TileFlipSH_AS} }\r
988 }; // [sh?][hi?][flip?]\r
15eed405 989 unsigned (*fTileFunc)(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal);\r
ee3c39ef 990 unsigned char *pd = Pico.est.HighCol;\r
6bfa97ff 991 unsigned char mb[sizeof(DefHighCol)/8];\r
d9e12ee7 992 unsigned char *p, *mp;\r
993 unsigned m;\r
ee3c39ef 994 int entry, cnt;\r
ee4f03ae 995\r
ae9a76c9 996 cnt = sprited[0] & 0x7f;\r
ee4f03ae 997 if (cnt == 0) return;\r
e5fa9817 998\r
ee3c39ef 999 memset(mb, 0xff, sizeof(mb));\r
5f0d224e 1000 p = &sprited[4];\r
1001 if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0))\r
1002 return; // masking effective due to tile overflow\r
e5fa9817 1003\r
ee4f03ae 1004 // Go through sprites:\r
1005 for (entry = 0; entry < cnt; entry++)\r
07abbab1 1006 {\r
b010d7b4 1007 s32 *sprite, code;\r
15eed405 1008 int pal, tile, sx, sy;\r
ee4f03ae 1009 int offs, delta, width, height, row;\r
1010\r
1011 offs = (p[entry] & 0x7f) * 2;\r
ae9a76c9 1012 sprite = Pico.est.HighPreSpr + offs;\r
ee4f03ae 1013 code = sprite[1];\r
1014 pal = (code>>9)&0x30;\r
1015\r
d9e12ee7 1016 fTileFunc = tilefuncs[(sh && pal == 0x30)][!!(code&0x8000)][!!(code&0x800)];\r
ee4f03ae 1017\r
1018 // parse remaining sprite data\r
1019 sy=sprite[0];\r
1020 sx=code>>16; // X\r
1021 width=sy>>28;\r
1022 height=(sy>>24)&7; // Width and height in tiles\r
ae9a76c9 1023 sy=(s16)sy; // Y\r
ee4f03ae 1024\r
ea38612f 1025 row=Pico.est.DrawScanline-sy; // Row of the sprite we are on\r
ee4f03ae 1026\r
1027 if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r
1028\r
1029 tile=code + (row>>3); // Tile number increases going down\r
1030 delta=height; // Delta to increase tile by going right\r
1031 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
1032\r
1033 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address\r
1034 delta<<=4; // Delta of address\r
e5fa9817 1035\r
5f0d224e 1036 if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited?\r
6badfabe 1037 while (sx <= 0 && width) width--, sx+=8, tile+=delta; // Offscreen\r
ea431e9e 1038 mp = mb+(sx>>3);\r
6badfabe 1039 for (m = *mp; width; width--, sx+=8, tile+=delta, *mp++ = m, m >>= 8)\r
07abbab1 1040 {\r
1a08dec0 1041 unsigned int pack;\r
1042\r
07abbab1 1043 if(sx>=328) break; // Offscreen\r
1044\r
57c5a5e5 1045 pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff)));\r
d9e12ee7 1046\r
26643d27 1047 m |= mp[1] << 8; // next mask byte\r
d9e12ee7 1048 // shift mask bits to bits 8-15 for easier load/store handling\r
6bfa97ff 1049 m = fTileFunc(m << (8-(sx&0x7)), pd + sx, pack, pal) >> (8-(sx&0x7));\r
d9e12ee7 1050 } \r
26643d27 1051 *mp = m; // write last mask byte\r
07abbab1 1052 }\r
e5fa9817 1053}\r
1054\r
6dd553c7 1055#ifdef FORCE\r
71a2e205 1056// NB lots of duplicate code, all for the sake of a small performance gain.\r
1057\r
3fe92896 1058// Forced tile drawing, without any masking and blank handling\r
1059#define DrawTileForced(mask,yshift,ymask,hpcode,cache) { \\r
1060 if (code!=oldcode) { \\r
1061 oldcode = code; \\r
1062 \\r
1063 /* Get tile address/2: */ \\r
1064 u32 addr = ((code<<yshift)&0x7ff0) + ty; \\r
1065 if (code & 0x1000) addr ^= ymask<<1; /* Y-flip */ \\r
1066 \\r
1067 pal = ((code>>9)&0x30); \\r
1068 pal |= 0xc0; /* leave s/h bits untouched in pixel "and" */ \\r
1069 \\r
1070 pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); \\r
1071 } \\r
1072 if (code & 0x0800) TileFlip_and(pd + dx, pack, pal); \\r
1073 else TileNorm_and(pd + dx, pack, pal); \\r
6dd553c7 1074}\r
1075\r
3fe92896 1076static DrawStripMaker(DrawStripForced, 4, 0x7, 0, DrawTileForced, 0);\r
6dd553c7 1077\r
3fe92896 1078static DrawStripMaker(DrawStripInterlaceForced, 5, 0xf, 0, DrawTileForced, 0);\r
6dd553c7 1079\r
3fe92896 1080static DrawStripVSRamMaker(DrawStripVSRamForced, 4, 0x7, 0, DrawTileForced, 0);\r
6dd553c7 1081\r
3fe92896 1082static DrawStripVSRamMaker(DrawStripVSRamInterlaceForced, 5, 0xf, 0, DrawTileForced, 0);\r
6dd553c7 1083\r
3fe92896 1084static DrawLayerMaker(DrawLayerForced,DrawStripForced,DrawStripInterlaceForced,DrawStripVSRamForced,DrawStripVSRamInterlaceForced);\r
6dd553c7 1085\r
2d5b6a66 1086static void DrawSpritesForced(unsigned char *sprited)\r
1087{\r
15eed405 1088 unsigned (*fTileFunc)(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal);\r
2d5b6a66 1089 unsigned char *pd = Pico.est.HighCol;\r
6bfa97ff 1090 unsigned char mb[sizeof(DefHighCol)/8];\r
6dd553c7 1091 unsigned char *p, *mp;\r
1092 unsigned m;\r
2d5b6a66 1093 int entry, cnt;\r
1094\r
ae9a76c9 1095 cnt = sprited[0] & 0x7f;\r
6dd553c7 1096 if (cnt == 0) { memset(pd, 0, sizeof(DefHighCol)); return; }\r
ae9a76c9 1097\r
6dd553c7 1098 memset(mb, 0xff, sizeof(mb));\r
2d5b6a66 1099 p = &sprited[4];\r
1100 if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0))\r
1101 return; // masking effective due to tile overflow\r
1102\r
1103 // Go through sprites:\r
1104 for (entry = 0; entry < cnt; entry++)\r
1105 {\r
b010d7b4 1106 s32 *sprite, code;\r
15eed405 1107 int pal, tile, sx, sy;\r
2d5b6a66 1108 int offs, delta, width, height, row;\r
1109\r
1110 offs = (p[entry] & 0x7f) * 2;\r
ae9a76c9 1111 sprite = Pico.est.HighPreSpr + offs;\r
2d5b6a66 1112 code = sprite[1];\r
1113 pal = (code>>9)&0x30;\r
3fe92896 1114 pal |= 0xc0; // leave s/h bits untouched in pixel "and"\r
2d5b6a66 1115\r
6dd553c7 1116 if (code&0x800) fTileFunc = TileFlipSH_AS_and;\r
1117 else fTileFunc = TileNormSH_AS_and;\r
2d5b6a66 1118\r
1119 // parse remaining sprite data\r
1120 sy=sprite[0];\r
1121 sx=code>>16; // X\r
1122 width=sy>>28;\r
1123 height=(sy>>24)&7; // Width and height in tiles\r
ae9a76c9 1124 sy=(s16)sy; // Y\r
2d5b6a66 1125\r
1126 row=Pico.est.DrawScanline-sy; // Row of the sprite we are on\r
1127\r
1128 if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r
1129\r
1130 tile=code + (row>>3); // Tile number increases going down\r
1131 delta=height; // Delta to increase tile by going right\r
1132 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
1133\r
1134 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address\r
1135 delta<<=4; // Delta of address\r
1136\r
1137 if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited?\r
6badfabe 1138 while (sx <= 0 && width) width--, sx+=8, tile+=delta; // Offscreen\r
6dd553c7 1139 mp = mb+(sx>>3);\r
6badfabe 1140 for (m = *mp; width; width--, sx+=8, tile+=delta, *mp++ = m, m >>= 8)\r
2d5b6a66 1141 {\r
57c5a5e5 1142 u32 pack;\r
2d5b6a66 1143\r
2d5b6a66 1144 if(sx>=328) break; // Offscreen\r
1145\r
57c5a5e5 1146 pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff)));\r
6dd553c7 1147\r
1148 m |= mp[1] << 8; // next mask byte\r
1149 // shift mask bits to bits 8-15 for easier load/store handling\r
6bfa97ff 1150 m = fTileFunc(m << (8-(sx&0x7)), pd + sx, pack, pal) >> (8-(sx&0x7));\r
6dd553c7 1151 } \r
1152 *mp = m; // write last mask byte\r
2d5b6a66 1153 }\r
6dd553c7 1154\r
d515a352 1155 // anything not covered by a sprite is off \r
3fe92896 1156 // TODO Titan hw notes say that transparent pixels remove shadow. Is this also\r
d515a352 1157 // the case in areas where no sprites are displayed?\r
6dd553c7 1158 for (cnt = 1; cnt < sizeof(mb)-1; cnt++)\r
71a2e205 1159 if (mb[cnt] == 0xff) {\r
1160 *(u32 *)(pd+8*cnt+0) = 0;\r
1161 *(u32 *)(pd+8*cnt+4) = 0;\r
1162 } else if (mb[cnt])\r
6dd553c7 1163 for (m = 0; m < 8; m++)\r
1164 if (mb[cnt] & (1<<m))\r
1165 pd[8*cnt+m] = 0;\r
2d5b6a66 1166}\r
6dd553c7 1167#endif\r
2d5b6a66 1168\r
cc68a136 1169\r
ae9a76c9 1170// sprite info in SAT:\r
cc68a136 1171// Index + 0 : ----hhvv -lllllll -------y yyyyyyyy\r
1172// Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn\r
ae9a76c9 1173// sprite info in HighPreSpr:\r
1174// Index + 0 : hhhhvvvv -lllllll yyyyyyyy yyyyyyyy // v/h size, link, y\r
1175// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x+8, prio, palette, flip, tile\r
cc68a136 1176\r
ae9a76c9 1177// Sprite parsing 1 line in advance: determine sprites on line by Y pos\r
d515a352 1178static NOINLINE void ParseSprites(int max_lines, int limit)\r
cc68a136 1179{\r
ea38612f 1180 const struct PicoEState *est=&Pico.est;\r
17c1401b 1181 const struct PicoVideo *pvid=&est->Pico->video;\r
fbc65db7 1182 int u,link=0,sh;\r
cc68a136 1183 int table=0;\r
ae9a76c9 1184 s32 *pd = HighPreSpr + HighPreSprBank*2;\r
25be5c52 1185 int max_sprites = 80, max_width = 328;\r
d9fc2fe1 1186 int max_line_sprites = 20; // 20 sprites, 40 tiles\r
1187\r
ac891449 1188 // SAT scanning is one line ahead, but don't overshoot. Technically, SAT\r
1189 // parsing for line 0 is on the last line of the previous frame.\r
0c9c8e47 1190 int first_line = est->DrawScanline + !!est->DrawScanline;\r
ac891449 1191 if (max_lines > rendlines-1)\r
1192 max_lines = rendlines-1;\r
1193\r
d515a352 1194 // look-ahead SAT parsing for next line and sprite pixel fetching for current\r
1195 // line are limited if display was disabled during HBLANK before current line\r
1196 if (limit) limit = 16; // max sprites/pixels processed\r
1197\r
17c1401b 1198 if (!(pvid->reg[12]&1))\r
947fb5f9 1199 max_sprites = 64, max_line_sprites = 16, max_width = 264;\r
d5d17782 1200 if (*est->PicoOpt & POPT_DIS_SPRITE_LIM)\r
d9fc2fe1 1201 max_line_sprites = MAX_LINE_SPRITES;\r
1202\r
17c1401b 1203 sh = pvid->reg[0xC]&8; // shadow/hilight?\r
cc68a136 1204\r
1205 table=pvid->reg[5]&0x7f;\r
1206 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
1207 table<<=8; // Get sprite table address/2\r
1208\r
ac891449 1209 for (u = first_line; u <= max_lines; u++)\r
25be5c52 1210 *((int *)&HighLnSpr[u][0]) = 0;\r
cc68a136 1211\r
25be5c52 1212 for (u = 0; u < max_sprites && link < max_sprites; u++)\r
1213 {\r
4cc0fcaf 1214 u32 *sprite;\r
25be5c52 1215 int code, code2, sx, sy, hv, height, width;\r
cc68a136 1216\r
15eed405 1217 sprite=(u32 *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
cc68a136 1218\r
25be5c52 1219 // parse sprite info. the 1st half comes from the VDPs internal cache,\r
1220 // the 2nd half is read from VRAM\r
ac891449 1221 code = CPU_LE2(VdpSATCache[2*link]); // normally same as sprite[0]\r
25be5c52 1222 sy = (code&0x1ff)-0x80;\r
1223 hv = (code>>24)&0xf;\r
1224 height = (hv&3)+1;\r
1225 width = (hv>>2)+1;\r
cc68a136 1226\r
57c5a5e5 1227 code2 = CPU_LE2(sprite[1]);\r
25be5c52 1228 sx = (code2>>16)&0x1ff;\r
1229 sx -= 0x78; // Get X coordinate + 8\r
d9fc2fe1 1230\r
ac891449 1231 if (sy <= max_lines && sy + (height<<3) >= first_line) // sprite onscreen (y)?\r
cc68a136 1232 {\r
25be5c52 1233 int entry, y, w, sx_min, onscr_x, maybe_op = 0;\r
d515a352 1234 // omit look-ahead line if sprite parsing limit reached\r
1235 int last_line = (limit && u >= 2*limit ? max_lines-1 : max_lines);\r
cc68a136 1236\r
25be5c52 1237 sx_min = 8-(width<<3);\r
1238 onscr_x = sx_min < sx && sx < max_width;\r
1239 if (sh && (code2 & 0x6000) == 0x6000)\r
1240 maybe_op = SPRL_MAY_HAVE_OP;\r
cc68a136 1241\r
ae9a76c9 1242 entry = (((pd - HighPreSpr) / 2) & 0x7f) | ((code2>>8)&0x80);\r
ac891449 1243 y = (sy >= first_line) ? sy : first_line;\r
d515a352 1244 for (; y < sy + (height<<3) && y <= last_line; y++)\r
d9fc2fe1 1245 {\r
25be5c52 1246 unsigned char *p = &HighLnSpr[y][0];\r
ae9a76c9 1247 int cnt = p[0] & 0x7f;\r
8e4ab3c6 1248 if (p[1] & SPRL_MASKED) continue; // masked?\r
25be5c52 1249\r
d515a352 1250 if (p[3] >= max_line_sprites) continue; // sprite limit?\r
1251 p[3] ++;\r
1252\r
25be5c52 1253 w = width;\r
1254 if (p[2] + width > max_line_sprites*2) { // tile limit?\r
1255 if (y+1 < 240) HighLnSpr[y+1][1] |= SPRL_TILE_OVFL;\r
1256 if (p[2] >= max_line_sprites*2) continue;\r
1257 w = max_line_sprites*2 - p[2];\r
d9fc2fe1 1258 }\r
25be5c52 1259 p[2] += w;\r
25be5c52 1260\r
1261 if (sx == -0x78) {\r
1262 if (p[1] & (SPRL_HAVE_X|SPRL_TILE_OVFL))\r
8e4ab3c6 1263 p[1] |= SPRL_MASKED; // masked, no more sprites for this line\r
25be5c52 1264 if (!(p[1] & SPRL_HAVE_X) && cnt == 0)\r
1265 p[1] |= SPRL_HAVE_MASK0; // 1st sprite is masking\r
1266 } else\r
1267 p[1] |= SPRL_HAVE_X;\r
1268\r
1269 if (!onscr_x) continue; // offscreen x\r
1270\r
d515a352 1271 // sprite is (partly) visible, store info for renderer\r
25be5c52 1272 p[1] |= (entry & 0x80) ? SPRL_HAVE_HI : SPRL_HAVE_LO;\r
1273 p[1] |= maybe_op; // there might be op sprites on this line\r
1274 if (cnt > 0 && (code2 & 0x8000) && !(p[4+cnt-1]&0x80))\r
1275 p[1] |= SPRL_LO_ABOVE_HI;\r
d515a352 1276\r
1277 p[4+cnt] = entry;\r
1278 p[5+cnt] = w; // width clipped by tile limit for sprite renderer\r
ae9a76c9 1279 p[0] = (cnt + 1) | HighPreSprBank;\r
cc68a136 1280 }\r
25be5c52 1281 }\r
6d7acf9e 1282\r
ae9a76c9 1283 *pd++ = (width<<28)|(height<<24)|(link<<16)|((u16)sy);\r
1284 *pd++ = (sx<<16)|((u16)code2);\r
6d7acf9e 1285\r
25be5c52 1286 // Find next sprite\r
1287 link=(code>>16)&0x7f;\r
1288 if (!link) break; // End of sprites\r
1289 }\r
1290 *pd = 0;\r
d9fc2fe1 1291\r
d515a352 1292 // fetching sprite pixels isn't done while display is disabled during HBLANK\r
1293 if (limit) {\r
1294 int w = 0;\r
1295 unsigned char *sprited = &HighLnSpr[max_lines-1][0]; // current render line\r
1296\r
ae9a76c9 1297 for (u = 0; u < (sprited[0] & 0x7f); u++) {\r
1298 s32 *sp = HighPreSpr + (sprited[4+u] & 0x7f) * 2 + HighPreSprBank*2;\r
d515a352 1299 int sw = sp[0] >> 28;\r
1300 if (w + sw > limit) {\r
ae9a76c9 1301 sprited[0] = u | HighPreSprBank;\r
d515a352 1302 sprited[4+u] = limit-w;\r
1303 break;\r
1304 }\r
1305 w += sw;\r
1306 }\r
1307 }\r
1308\r
d9fc2fe1 1309#if 0\r
ac891449 1310 for (u = first_line; u <= max_lines; u++)\r
25be5c52 1311 {\r
1312 int y;\r
ae9a76c9 1313 printf("c%03i b%d: f %x c %2i/%2i w %2i: ", u, !!HighPreSprBank, HighLnSpr[u][1],\r
1314 HighLnSpr[u][0] & 0x7f, HighLnSpr[u][3], HighLnSpr[u][2]);\r
1315 for (y = 0; y < (HighLnSpr[u][0] & 0x7f); y++) {\r
1316 s32 *sp = HighPreSpr + (HighLnSpr[u][y+4]&0x7f) * 2 + HighPreSprBank*2;\r
47548249 1317 printf(" %i(%x/%x)", HighLnSpr[u][y+4],sp[0],sp[1]);\r
1318 }\r
25be5c52 1319 printf("\n");\r
cc68a136 1320 }\r
25be5c52 1321#endif\r
ae9a76c9 1322\r
1323 HighPreSprBank ^= 0x80;\r
cc68a136 1324}\r
1325\r
283fec1b 1326#ifndef _ASM_DRAW_C\r
ea38612f 1327static void DrawAllSprites(unsigned char *sprited, int prio, int sh,\r
1328 struct PicoEState *est)\r
cc68a136 1329{\r
d9fc2fe1 1330 unsigned char *p;\r
672b29e6 1331 int cnt, w;\r
cc68a136 1332\r
ae9a76c9 1333 cnt = sprited[0] & 0x7f;\r
ee4f03ae 1334 if (cnt == 0) return;\r
cc68a136 1335\r
5f0d224e 1336 p = &sprited[4];\r
1337 if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0))\r
1338 return; // masking effective due to tile overflow\r
cc68a136 1339\r
ee4f03ae 1340 // Go through sprites backwards:\r
5f0d224e 1341 w = p[cnt]; // possibly clipped width of last sprite\r
1342 for (cnt--; cnt >= 0; cnt--, w = 0)\r
ee4f03ae 1343 {\r
ae9a76c9 1344 s32 *sp = est->HighPreSpr + (p[cnt]&0x7f) * 2;\r
97a7f774 1345 if ((p[cnt] >> 7) != prio) continue;\r
5f0d224e 1346 DrawSprite(sp, sh, w);\r
cc68a136 1347 }\r
cc68a136 1348}\r
1349\r
1350\r
1351// --------------------------------------------\r
1352\r
0c9c8e47 1353void BackFill(int bgc, int sh, struct PicoEState *est)\r
cc68a136 1354{\r
0c9c8e47 1355 u32 back = bgc;\r
cc68a136 1356\r
1357 // Start with a blank scanline (background colour):\r
6bfa97ff 1358 back|=sh<<7; // shadow\r
cc68a136 1359 back|=back<<8;\r
1360 back|=back<<16;\r
1361\r
99bdfd31 1362 memset32((int *)(est->HighCol+8), back, 320/4);\r
cc68a136 1363}\r
1364#endif\r
1365\r
1366// --------------------------------------------\r
1367\r
724db457 1368static u16 *BgcDMAbase;\r
1369static u32 BgcDMAsrc, BgcDMAmask;\r
1370static int BgcDMAlen, BgcDMAoffs;\r
1371\r
1372#ifndef _ASM_DRAW_C\r
1373static\r
1374#endif\r
1375// handle DMA to background color\r
db1ee7a2 1376void BgcDMA(struct PicoEState *est)\r
724db457 1377{\r
db1ee7a2 1378 u16 *pd=est->DrawLineDest;\r
1379 int len = (est->Pico->video.reg[12]&1) ? 320 : 256;\r
1380 // TODO for now handles the line as all background.\r
724db457 1381 int xl = (len == 320 ? 38 : 33); // DMA slots during HSYNC\r
1382 int upscale = (est->rendstatus & PDRAW_SOFTSCALE) && len < 320;\r
db1ee7a2 1383 u16 *q = upscale ? DefOutBuff : pd;\r
1384 int i, l = len;\r
1385 u16 t;\r
724db457 1386\r
db1ee7a2 1387 if ((est->rendstatus & PDRAW_BORDER_32) && !upscale)\r
1388 q += (320-len) / 2;\r
724db457 1389\r
db1ee7a2 1390 BgcDMAlen -= ((l-BgcDMAoffs)>>1)+xl;\r
1391 if (BgcDMAlen <= 0) {\r
1392 // partial line\r
1393 l += 2*BgcDMAlen;\r
1394 est->rendstatus &= ~PDRAW_BGC_DMA;\r
1395 }\r
724db457 1396\r
db1ee7a2 1397 for (i = BgcDMAoffs; i < l; i += 2) {\r
1398 // TODO use ps to overwrite only real bg pixels\r
1399 t = BgcDMAbase[BgcDMAsrc++ & BgcDMAmask];\r
1400 q[i] = q[i+1] = PXCONV(t);\r
1401 }\r
1402 BgcDMAsrc += xl; // HSYNC DMA\r
1403 BgcDMAoffs = 0;\r
724db457 1404\r
f1dbe764 1405 t = PXCONV(PicoMem.cram[Pico.video.reg[7] & 0x3f]);\r
db1ee7a2 1406 while (i < len) q[i++] = t; // fill partial line with BG\r
724db457 1407\r
db1ee7a2 1408 if (upscale) {\r
1409 switch (PicoIn.filter) {\r
1410 case 3: h_upscale_bl4_4_5(pd, 320, q, 256, len, f_nop); break;\r
1411 case 2: h_upscale_bl2_4_5(pd, 320, q, 256, len, f_nop); break;\r
1412 case 1: h_upscale_snn_4_5(pd, 320, q, 256, len, f_nop); break;\r
1413 default: h_upscale_nn_4_5(pd, 320, q, 256, len, f_nop); break;\r
724db457 1414 }\r
724db457 1415 }\r
724db457 1416}\r
1417\r
1418// --------------------------------------------\r
1419\r
1420static void PicoDoHighPal555_8bit(int sh, int line, struct PicoEState *est)\r
b1a047c9 1421{\r
1422 unsigned int *spal, *dpal;\r
1423 unsigned int cnt = (sh ? 1 : est->SonicPalCount+1);\r
1424 unsigned int t, i;\r
1425\r
1426 // reset dirty only if there are no outstanding changes\r
17c1401b 1427 if (est->Pico->m.dirtyPal == 2)\r
1428 est->Pico->m.dirtyPal = 0;\r
b1a047c9 1429\r
1430 // In Sonic render mode palettes were backuped in SonicPal\r
1431 spal = (void *)est->SonicPal;\r
1432 dpal = (void *)est->HighPal;\r
1433\r
1434 // additional palettes stored after in-frame changes\r
1435 for (i = 0; i < cnt * 0x40 / 2; i++) {\r
1436 t = spal[i];\r
b1a047c9 1437 // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that.\r
1438 // otherwise intensity difference between this and s/h will be wrong\r
16b11d91 1439 t = PXCONV(t);\r
1440 t |= (t >> 4) & PXMASKL;\r
02d3e670 1441 // take into account that MegaDrive RGB output isn't linear, there is a larger\r
1442 // step for 0->1 and 6->7. While the latter isn't obviously noticeable, the\r
1443 // former is clearly visible (see color test in Knuckles Chaotix)\r
1444 t |= ((t ^ PXMASKL) & (/*t>>4|*/t>>3|t>>2) & PXMASKL) << 1;\r
08bbe7f8 1445 dpal[i] = t;\r
b1a047c9 1446 }\r
1447\r
1448 // norm: xxx0, sh: 0xxx, hi: 0xxx + 7\r
1449 if (sh)\r
1450 {\r
02d3e670 1451 // normal and shadowed pixels\r
08bbe7f8 1452 for (i = 0; i < 0x40 / 2; i++) {\r
1453 dpal[0xc0/2 + i] = dpal[i];\r
02d3e670 1454 // take into account that MegaDrive RGB output isn't linear, see above\r
1455 t = (dpal[i] >> 1) & PXMASKH;\r
1456 dpal[0x80/2 + i] = t + ((t>>2|t>>1|t>>0) & (PXMASKL<<1));\r
08bbe7f8 1457 }\r
b1a047c9 1458 // hilighted pixels\r
1459 for (i = 0; i < 0x40 / 2; i++) {\r
02d3e670 1460 t = (dpal[i] >> 1) & PXMASKH;\r
1461 dpal[0x40/2 + i] = t + PXMASKH + PXMASKL;\r
b1a047c9 1462 }\r
1463 }\r
1464}\r
1465\r
b2305d08 1466#ifndef _ASM_DRAW_C\r
ea38612f 1467void PicoDoHighPal555(int sh, int line, struct PicoEState *est)\r
e55f0cbb 1468{\r
19954be1 1469 unsigned int *spal, *dpal;\r
a39d8ba5 1470 unsigned int t, i;\r
e55f0cbb 1471\r
17c1401b 1472 est->Pico->m.dirtyPal = 0;\r
e55f0cbb 1473\r
88fd63ad 1474 spal = (void *)PicoMem.cram;\r
98a27142 1475 dpal = (void *)est->HighPal;\r
19954be1 1476\r
a39d8ba5 1477 for (i = 0; i < 0x40 / 2; i++) {\r
1478 t = spal[i];\r
a39d8ba5 1479 // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that.\r
1480 // otherwise intensity difference between this and s/h will be wrong\r
16b11d91 1481 t = PXCONV(t);\r
1482 t |= (t >> 4) & PXMASKL;\r
02d3e670 1483 // take into account that MegaDrive RGB output isn't linear, see above\r
1484 t |= ((t ^ PXMASKL) & (/*t>>4|*/t>>3|t>>2) & PXMASKL) << 1;\r
6bfa97ff 1485 dpal[i] = dpal[0xc0/2 + i] = t;\r
e55f0cbb 1486 }\r
1487\r
a39d8ba5 1488 // norm: xxx0, sh: 0xxx, hi: 0xxx + 7\r
e55f0cbb 1489 if (sh)\r
1490 {\r
1491 // shadowed pixels\r
02d3e670 1492 for (i = 0; i < 0x40 / 2; i++) {\r
1493 // take into account that MegaDrive RGB output isn't linear, see above\r
1494 t = (dpal[i] >> 1) & PXMASKH;\r
1495 dpal[0x80/2 + i] = t + ((t>>2|t>>1|t>>0) & (PXMASKL<<1));\r
1496 }\r
e55f0cbb 1497 // hilighted pixels\r
a39d8ba5 1498 for (i = 0; i < 0x40 / 2; i++) {\r
02d3e670 1499 t = (dpal[i] >> 1) & PXMASKH;\r
1500 dpal[0x40/2 + i] = t + PXMASKH + PXMASKL;\r
e55f0cbb 1501 }\r
1502 }\r
1503}\r
1504\r
99bdfd31 1505void FinalizeLine555(int sh, int line, struct PicoEState *est)\r
cc68a136 1506{\r
99bdfd31 1507 unsigned short *pd=est->DrawLineDest;\r
1508 unsigned char *ps=est->HighCol+8;\r
98a27142 1509 unsigned short *pal=est->HighPal;\r
e55f0cbb 1510 int len;\r
cc68a136 1511\r
aa97a0a0 1512 if (DrawLineDestIncrement == 0)\r
1513 return;\r
1514\r
f1dbe764 1515 if (est->rendstatus & PDRAW_BGC_DMA)\r
1516 return BgcDMA(est);\r
1517\r
b1a047c9 1518 PicoDrawUpdateHighPal();\r
cc68a136 1519\r
96948bdf 1520 len = 256;\r
17c1401b 1521 if (!(PicoIn.AHW & PAHW_8BIT) && (est->Pico->video.reg[12]&1))\r
96948bdf 1522 len = 320;\r
17c1401b 1523 else if ((PicoIn.AHW & PAHW_GG) && (est->Pico->m.hardware & PMS_HW_LCD))\r
0c9c8e47 1524 len = 160;\r
17c1401b 1525 else if ((PicoIn.AHW & PAHW_SMS) && (est->Pico->video.reg[0] & 0x20))\r
96948bdf 1526 len -= 8, ps += 8;\r
466fa079 1527\r
17c1401b 1528 if ((est->rendstatus & PDRAW_SOFTSCALE) && len < 320) {\r
96948bdf 1529 if (len >= 240 && len <= 256) {\r
1530 pd += (256-len)>>1;\r
466fa079 1531 switch (PicoIn.filter) {\r
1532 case 3: h_upscale_bl4_4_5(pd, 320, ps, 256, len, f_pal); break;\r
1533 case 2: h_upscale_bl2_4_5(pd, 320, ps, 256, len, f_pal); break;\r
1534 case 1: h_upscale_snn_4_5(pd, 320, ps, 256, len, f_pal); break;\r
1535 default: h_upscale_nn_4_5(pd, 320, ps, 256, len, f_pal); break;\r
1536 }\r
52e4a905 1537 if (est->rendstatus & PDRAW_32X_SCALE) { // 32X needs scaled CLUT data\r
1538 unsigned char *psc = ps - 256, *pdc = psc;\r
1539 rh_upscale_nn_4_5(pdc, 320, psc, 256, 256, f_nop);\r
1540 }\r
1541 } else if (len == 160)\r
466fa079 1542 switch (PicoIn.filter) {\r
1543 case 3:\r
1544 case 2: h_upscale_bl2_1_2(pd, 320, ps, 160, len, f_pal); break;\r
1545 default: h_upscale_nn_1_2(pd, 320, ps, 160, len, f_pal); break;\r
1546 }\r
d5d17782 1547 } else {\r
17c1401b 1548 if ((est->rendstatus & PDRAW_BORDER_32) && len < 320)\r
466fa079 1549 pd += (320-len) / 2;\r
d5d17782 1550#if 1\r
1551 h_copy(pd, 320, ps, 320, len, f_pal);\r
70357ce5 1552#else\r
70357ce5 1553 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);\r
e5fa9817 1554 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);\r
ee3c39ef 1555 if (!sh)\r
e5fa9817 1556 amips_clut_6bit(pd, ps, pal, len);\r
1557 else amips_clut(pd, ps, pal, len);\r
70357ce5 1558#endif\r
e5fa9817 1559 }\r
cc68a136 1560}\r
1561#endif\r
1562\r
466fa079 1563void FinalizeLine8bit(int sh, int line, struct PicoEState *est)\r
cc68a136 1564{\r
99bdfd31 1565 unsigned char *pd = est->DrawLineDest;\r
466fa079 1566 unsigned char *ps = est->HighCol+8;\r
b1a047c9 1567 int len;\r
1568 static int dirty_line;\r
cc68a136 1569\r
646be42e 1570 // a hack for mid-frame palette changes\r
17c1401b 1571 if (est->Pico->m.dirtyPal == 1)\r
602133e1 1572 {\r
0c9c8e47 1573 // store a maximum of 3 additional palettes in SonicPal\r
1574 if (est->SonicPalCount < 3 &&\r
1575 (!(est->rendstatus & PDRAW_SONIC_MODE) || (line - dirty_line >= 4))) {\r
646be42e 1576 est->SonicPalCount ++;\r
b1a047c9 1577 dirty_line = line;\r
1578 est->rendstatus |= PDRAW_SONIC_MODE;\r
cc68a136 1579 }\r
b1a047c9 1580 blockcpy(est->SonicPal+est->SonicPalCount*0x40, PicoMem.cram, 0x40*2);\r
17c1401b 1581 est->Pico->m.dirtyPal = 2;\r
cc68a136 1582 }\r
1583\r
96948bdf 1584 len = 256;\r
17c1401b 1585 if (!(PicoIn.AHW & PAHW_8BIT) && (est->Pico->video.reg[12]&1))\r
96948bdf 1586 len = 320;\r
17c1401b 1587 else if ((PicoIn.AHW & PAHW_GG) && (est->Pico->m.hardware & PMS_HW_LCD))\r
0c9c8e47 1588 len = 160;\r
17c1401b 1589 else if ((PicoIn.AHW & PAHW_SMS) && (est->Pico->video.reg[0] & 0x20))\r
96948bdf 1590 len -= 8, ps += 8;\r
466fa079 1591\r
1592 if (DrawLineDestIncrement == 0)\r
1593 pd = est->HighCol+8;\r
cc68a136 1594\r
17c1401b 1595 if ((est->rendstatus & PDRAW_SOFTSCALE) && len < 320) {\r
d5d17782 1596 unsigned char pal = 0;\r
1597\r
1598 if (!sh && (est->rendstatus & PDRAW_SONIC_MODE))\r
1599 pal = est->SonicPalCount*0x40;\r
d5d17782 1600 // Smoothing can't be used with CLUT, hence it's always Nearest Neighbour.\r
96948bdf 1601 if (len >= 240)\r
466fa079 1602 // use reverse version since src and dest ptr may be the same.\r
1603 rh_upscale_nn_4_5(pd, 320, ps, 256, len, f_or);\r
1604 else\r
1605 rh_upscale_nn_1_2(pd, 320, ps, 256, len, f_or);\r
cc68a136 1606 } else {\r
17c1401b 1607 if ((est->rendstatus & PDRAW_BORDER_32) && len < 320)\r
466fa079 1608 pd += (320-len) / 2;\r
1609 if (!sh && (est->rendstatus & PDRAW_SONIC_MODE))\r
d5d17782 1610 // select active backup palette\r
466fa079 1611 blockcpy_or(pd, ps, len, est->SonicPalCount*0x40);\r
1612 else if (pd != ps)\r
1613 blockcpy(pd, ps, len);\r
cc68a136 1614 }\r
1615}\r
1616\r
ea38612f 1617static void (*FinalizeLine)(int sh, int line, struct PicoEState *est);\r
cc68a136 1618\r
b6d7ac70 1619// --------------------------------------------\r
1620\r
0fc0e241 1621static int DrawDisplay(int sh)\r
cc68a136 1622{\r
ea38612f 1623 struct PicoEState *est=&Pico.est;\r
1624 unsigned char *sprited = &HighLnSpr[est->DrawScanline][0];\r
17c1401b 1625 struct PicoVideo *pvid=&est->Pico->video;\r
e0bcb7a9 1626 int win=0, edge=0, hvwind=0, lflags;\r
1627 int maxw, maxcells;\r
cc68a136 1628\r
47677a2a 1629 est->rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO|PDRAW_WND_DIFF_PRIO);\r
ae9a76c9 1630 est->HighPreSpr = HighPreSpr + (sprited[0]&0x80)*2;\r
740da8c6 1631\r
fbc65db7 1632 if (pvid->reg[12]&1) {\r
557aa28c 1633 maxw = 320; maxcells = 40;\r
cc68a136 1634 } else {\r
557aa28c 1635 maxw = 256; maxcells = 32;\r
cc68a136 1636 }\r
1637\r
1638 // Find out if the window is on this line:\r
1639 win=pvid->reg[0x12];\r
1640 edge=(win&0x1f)<<3;\r
1641\r
ea38612f 1642 if (win&0x80) { if (est->DrawScanline>=edge) hvwind=1; }\r
1643 else { if (est->DrawScanline< edge) hvwind=1; }\r
cc68a136 1644\r
fbc65db7 1645 if (!hvwind) // we might have a vertical window here\r
1646 {\r
cc68a136 1647 win=pvid->reg[0x11];\r
1648 edge=win&0x1f;\r
7a7c6476 1649 if (win&0x80) {\r
1650 if (!edge) hvwind=1;\r
cc68a136 1651 else if(edge < (maxcells>>1)) hvwind=2;\r
1652 } else {\r
7a7c6476 1653 if (!edge);\r
cc68a136 1654 else if(edge < (maxcells>>1)) hvwind=2;\r
1655 else hvwind=1;\r
1656 }\r
1657 }\r
1658\r
fbc65db7 1659 /* - layer B low - */\r
e0bcb7a9 1660 if (!(pvid->debug_p & PVD_KILL_B)) {\r
6bfa97ff 1661 lflags = LF_PLANE_B | (sh<<1);\r
557aa28c 1662 DrawLayer(lflags | LF_LINE, HighCacheB, 0, maxcells, est);\r
e0bcb7a9 1663 }\r
fbc65db7 1664 /* - layer A low - */\r
6bfa97ff 1665 lflags = LF_PLANE_A | (sh<<1);\r
e0bcb7a9 1666 if (pvid->debug_p & PVD_KILL_A)\r
1667 ;\r
fbc65db7 1668 else if (hvwind == 1)\r
ea38612f 1669 DrawWindow(0, maxcells>>1, 0, sh, est);\r
7a7c6476 1670 else if (hvwind == 2) {\r
e0bcb7a9 1671 DrawLayer(lflags, HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells, est);\r
1672 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh, est);\r
1673 }\r
1674 else\r
557aa28c 1675 DrawLayer(lflags | LF_LINE, HighCacheA, 0, maxcells, est);\r
fbc65db7 1676 /* - sprites low - */\r
e0bcb7a9 1677 if (pvid->debug_p & PVD_KILL_S_LO)\r
1678 ;\r
6d8782a1 1679 else if (est->rendstatus & PDRAW_INTERLACE)\r
fbc65db7 1680 DrawAllSpritesInterlace(0, sh);\r
1681 else if (sprited[1] & SPRL_HAVE_LO)\r
ea38612f 1682 DrawAllSprites(sprited, 0, sh, est);\r
fbc65db7 1683\r
1684 /* - layer B hi - */\r
e0bcb7a9 1685 if (!(pvid->debug_p & PVD_KILL_B) && HighCacheB[0])\r
ea38612f 1686 DrawTilesFromCache(HighCacheB, sh, maxw, est);\r
fbc65db7 1687 /* - layer A hi - */\r
e0bcb7a9 1688 if (pvid->debug_p & PVD_KILL_A)\r
1689 ;\r
fbc65db7 1690 else if (hvwind == 1)\r
ea38612f 1691 DrawWindow(0, maxcells>>1, 1, sh, est);\r
7a7c6476 1692 else if (hvwind == 2) {\r
ea38612f 1693 if (HighCacheA[0])\r
3fe92896 1694 DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw, est);\r
ea38612f 1695 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh, est);\r
cc68a136 1696 } else\r
ea38612f 1697 if (HighCacheA[0])\r
1698 DrawTilesFromCache(HighCacheA, sh, maxw, est);\r
fbc65db7 1699 /* - sprites hi - */\r
e0bcb7a9 1700 if (pvid->debug_p & PVD_KILL_S_HI)\r
1701 ;\r
6d8782a1 1702 else if (est->rendstatus & PDRAW_INTERLACE)\r
fbc65db7 1703 DrawAllSpritesInterlace(1, sh);\r
f8af9634 1704 // have sprites without layer pri bit ontop of sprites with that bit\r
17c1401b 1705 else if ((sprited[1] & SPRL_LO_ABOVE_HI) && (*est->PicoOpt & POPT_ACC_SPRITES))\r
fbc65db7 1706 DrawSpritesHiAS(sprited, sh);\r
1707 else if (sh && (sprited[1] & SPRL_MAY_HAVE_OP))\r
ea38612f 1708 DrawSpritesSHi(sprited, est);\r
fbc65db7 1709 else if (sprited[1] & SPRL_HAVE_HI)\r
ea38612f 1710 DrawAllSprites(sprited, 1, 0, est);\r
cc68a136 1711\r
6dd553c7 1712#ifdef FORCE\r
1713 if (pvid->debug_p & PVD_FORCE_B) {\r
6bfa97ff 1714 lflags = LF_PLANE_B | (sh<<1);\r
3fe92896 1715 DrawLayerForced(lflags, NULL, 0, maxcells, est);\r
6dd553c7 1716 } else if (pvid->debug_p & PVD_FORCE_A) {\r
3fe92896 1717 // TODO what happens in windowed mode? \r
6bfa97ff 1718 lflags = LF_PLANE_A | (sh<<1);\r
3fe92896 1719 DrawLayerForced(lflags, NULL, 0, maxcells, est);\r
6dd553c7 1720 } else if (pvid->debug_p & PVD_FORCE_S)\r
2d5b6a66 1721 DrawSpritesForced(sprited);\r
6dd553c7 1722#endif\r
e0bcb7a9 1723\r
740da8c6 1724#if 0\r
1725 {\r
1726 int *c, a, b;\r
47677a2a 1727 for (a = 0, c = HighCacheA; *c; c+=2, a++);\r
1728 for (b = 0, c = HighCacheB; *c; c+=2, b++);\r
ea38612f 1729 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count,\r
0c9c8e47 1730 est->DrawScanline, a, b);\r
740da8c6 1731 }\r
1732#endif\r
1733\r
cc68a136 1734 return 0;\r
1735}\r
1736\r
f8af9634 1737// MUST be called every frame\r
eff55556 1738PICO_INTERNAL void PicoFrameStart(void)\r
cc68a136 1739{\r
0c9c8e47 1740 struct PicoEState *est = &Pico.est;\r
d5d17782 1741 int loffs = 8, lines = 224, coffs = 0, columns = 320;\r
0c9c8e47 1742 int sprep = est->rendstatus & PDRAW_DIRTY_SPRITES;\r
1743 int skipped = est->rendstatus & PDRAW_SKIP_FRAME;\r
f9ed9446 1744 int sync = est->rendstatus & (PDRAW_SYNC_NEEDED | PDRAW_SYNC_NEXT);\r
ae87bffa 1745\r
cc68a136 1746 // prepare to do this frame\r
0c9c8e47 1747 est->rendstatus = 0;\r
17c1401b 1748\r
5864c421 1749 if (PicoIn.AHW & PAHW_32X) // H32 upscaling, before mixing in 32X layer\r
1750 est->rendstatus = (*est->PicoOpt & POPT_ALT_RENDERER) ?\r
1751 PDRAW_BORDER_32 : PDRAW_32X_SCALE|PDRAW_SOFTSCALE;\r
e44277d0 1752 else if (!(*est->PicoOpt & POPT_DIS_32C_BORDER))\r
17c1401b 1753 est->rendstatus |= PDRAW_BORDER_32;\r
1754\r
e44277d0 1755 if ((*est->PicoOpt & POPT_EN_SOFTSCALE) && !(*est->PicoOpt & POPT_ALT_RENDERER))\r
5864c421 1756 est->rendstatus |= PDRAW_SOFTSCALE;\r
1757\r
17c1401b 1758 if ((est->Pico->video.reg[12] & 6) == 6)\r
0c9c8e47 1759 est->rendstatus |= PDRAW_INTERLACE; // interlace mode\r
17c1401b 1760 if (!(est->Pico->video.reg[12] & 1)) {\r
0c9c8e47 1761 est->rendstatus |= PDRAW_32_COLS;\r
e44277d0 1762 if (!(est->rendstatus & PDRAW_SOFTSCALE) && !(PicoIn.AHW & PAHW_32X)) {\r
d5d17782 1763 columns = 256;\r
1764 coffs = 32;\r
1765 }\r
1766 }\r
17c1401b 1767 if (est->Pico->video.reg[1] & 8) {\r
0c9c8e47 1768 est->rendstatus |= PDRAW_30_ROWS;\r
ae87bffa 1769 lines = 240;\r
d5d17782 1770 loffs = 0;\r
5a681086 1771 }\r
17c1401b 1772 if (!(est->rendstatus & PDRAW_BORDER_32))\r
d5d17782 1773 coffs = 0;\r
e5fa9817 1774\r
0c9c8e47 1775 if (est->rendstatus != rendstatus_old || lines != rendlines) {\r
ae87bffa 1776 rendlines = lines;\r
c180662e 1777 // mode_change() might reset rendstatus_old by calling SetOutFormat\r
a5aae2c3 1778 int rendstatus = est->rendstatus;\r
d5d17782 1779 emu_video_mode_change(loffs, lines, coffs, columns);\r
a5aae2c3 1780 rendstatus_old = rendstatus;\r
f9ed9446 1781 // mode_change() might clear buffers, redraw needed\r
1782 est->rendstatus |= PDRAW_SYNC_NEEDED;\r
19954be1 1783 }\r
f9ed9446 1784\r
1785 if (sync | skipped)\r
1786 est->rendstatus |= PDRAW_SYNC_NEEDED;\r
3031ff34 1787 if (PicoIn.skipFrame) // preserve this until something is rendered at last\r
0c9c8e47 1788 est->rendstatus |= PDRAW_SKIP_FRAME;\r
3031ff34 1789 if (sprep | skipped)\r
0c9c8e47 1790 est->rendstatus |= PDRAW_PARSE_SPRITES;\r
19954be1 1791\r
0c9c8e47 1792 est->HighCol = HighColBase + loffs * HighColIncrement;\r
1793 est->DrawLineDest = (char *)DrawLineDestBase + loffs * DrawLineDestIncrement;\r
1794 est->DrawScanline = 0;\r
b7d64dbd 1795 skip_next_line = 0;\r
1796\r
b1a047c9 1797 if (FinalizeLine == FinalizeLine8bit) {\r
1798 // make a backup of the current palette in case Sonic mode is detected later\r
17c1401b 1799 est->Pico->m.dirtyPal = (est->Pico->m.dirtyPal || est->SonicPalCount ? 2 : 0);\r
0c9c8e47 1800 blockcpy(est->SonicPal, PicoMem.cram, 0x40*2);\r
b1a047c9 1801 }\r
0c9c8e47 1802 est->SonicPalCount = 0;\r
cc68a136 1803}\r
1804\r
974fdb5b 1805static void DrawBlankedLine(int line, int offs, int sh, int bgc)\r
87b0845f 1806{\r
0c9c8e47 1807 struct PicoEState *est = &Pico.est;\r
466fa079 1808 int skip = skip_next_line;\r
1809\r
1810 if (PicoScanBegin != NULL && skip == 0)\r
1811 skip = PicoScanBegin(line + offs);\r
1812\r
1813 if (skip) {\r
1814 skip_next_line = skip - 1;\r
1815 return;\r
1816 }\r
87b0845f 1817\r
0c9c8e47 1818 BackFill(bgc, sh, est);\r
87b0845f 1819\r
1820 if (FinalizeLine != NULL)\r
0c9c8e47 1821 FinalizeLine(sh, line, est);\r
87b0845f 1822\r
1823 if (PicoScanEnd != NULL)\r
466fa079 1824 skip_next_line = PicoScanEnd(line + offs);\r
b2670137 1825\r
0c9c8e47 1826 est->HighCol += HighColIncrement;\r
1827 est->DrawLineDest = (char *)est->DrawLineDest + DrawLineDestIncrement;\r
87b0845f 1828}\r
1829\r
97232a47 1830static void PicoLine(int line, int offs, int sh, int bgc, int off, int on)\r
cc68a136 1831{\r
0c9c8e47 1832 struct PicoEState *est = &Pico.est;\r
466fa079 1833 int skip = skip_next_line;\r
cc68a136 1834\r
0c9c8e47 1835 est->DrawScanline = line;\r
466fa079 1836 if (PicoScanBegin != NULL && skip == 0)\r
ae87bffa 1837 skip = PicoScanBegin(line + offs);\r
1838\r
1839 if (skip) {\r
1840 skip_next_line = skip - 1;\r
1841 return;\r
1842 }\r
602133e1 1843\r
17c1401b 1844 if (est->Pico->video.debug_p & (PVD_FORCE_A | PVD_FORCE_B | PVD_FORCE_S))\r
e0bcb7a9 1845 bgc = 0x3f;\r
1846\r
cc68a136 1847 // Draw screen:\r
0c9c8e47 1848 BackFill(bgc, sh, est);\r
17c1401b 1849 if (est->Pico->video.reg[1]&0x40) {\r
1850 int width = (est->Pico->video.reg[12]&1) ? 320 : 256;\r
0fc0e241 1851 DrawDisplay(sh);\r
97232a47 1852 // partial line blanking (display on or off inside the line)\r
1853 if (unlikely(off|on)) {\r
1854 if (off > 0)\r
1855 memset(est->HighCol+8 + off, bgc, width-off);\r
1856 if (on > 0)\r
1857 memset(est->HighCol+8, bgc, on);\r
1858 }\r
1859 }\r
cc68a136 1860\r
ea8c405f 1861 if (FinalizeLine != NULL)\r
0c9c8e47 1862 FinalizeLine(sh, line, est);\r
cc68a136 1863\r
602133e1 1864 if (PicoScanEnd != NULL)\r
87b0845f 1865 skip_next_line = PicoScanEnd(line + offs);\r
5a681086 1866\r
0c9c8e47 1867 est->HighCol += HighColIncrement;\r
1868 est->DrawLineDest = (char *)est->DrawLineDest + DrawLineDestIncrement;\r
cc68a136 1869}\r
1870\r
97232a47 1871void PicoDrawSync(int to, int off, int on)\r
b6d7ac70 1872{\r
b061bc16 1873 struct PicoEState *est = &Pico.est;\r
b38c0ea6 1874 int line, offs;\r
17c1401b 1875 int sh = (est->Pico->video.reg[0xC] & 8) >> 3; // shadow/hilight?\r
1876 int bgc = est->Pico->video.reg[7] & 0x3f;\r
87b0845f 1877\r
f6c49d38 1878 pprof_start(draw);\r
1879\r
b38c0ea6 1880 offs = (240-rendlines) >> 1;\r
1881 if (to >= rendlines)\r
1882 to = rendlines-1;\r
1883\r
0c9c8e47 1884 if (est->DrawScanline <= to &&\r
1885 (est->rendstatus & (PDRAW_DIRTY_SPRITES|PDRAW_PARSE_SPRITES)))\r
97232a47 1886 ParseSprites(to + 1, on);\r
f9ed9446 1887 else if (!(est->rendstatus & PDRAW_SYNC_NEEDED)) {\r
1888 // nothing has changed in VDP/VRAM and buffer is the same -> no sync needed\r
1889 int count = to+1 - est->DrawScanline;\r
1890 est->HighCol += count*HighColIncrement;\r
1891 est->DrawLineDest = (char *)est->DrawLineDest + count*DrawLineDestIncrement;\r
1892 est->DrawScanline = to+1;\r
1893 return;\r
1894 }\r
87b0845f 1895\r
b061bc16 1896 for (line = est->DrawScanline; line < to; line++)\r
97232a47 1897 PicoLine(line, offs, sh, bgc, 0, 0);\r
b6d7ac70 1898\r
b6d7ac70 1899 // last line\r
87b0845f 1900 if (line <= to)\r
b6d7ac70 1901 {\r
17c1401b 1902 int width2 = (est->Pico->video.reg[12]&1) ? 160 : 128;\r
97232a47 1903\r
97232a47 1904 if (unlikely(on|off) && (off >= width2 ||\r
1905 // hack for timing inaccuracy, if on/off near borders\r
1906 (off && off <= 24) || (on < width2 && on >= width2-24)))\r
1907 DrawBlankedLine(line, offs, sh, bgc);\r
1908 else {\r
1909 if (on > width2) on = 0; // on, before start of line?\r
1910 PicoLine(line, offs, sh, bgc, 2*off, 2*on);\r
1911 }\r
87b0845f 1912 line++;\r
b6d7ac70 1913 }\r
b061bc16 1914 est->DrawScanline = line;\r
f6c49d38 1915\r
1916 pprof_end(draw);\r
b6d7ac70 1917}\r
cc68a136 1918\r
0c9c8e47 1919void PicoDrawRefreshSprites(void)\r
ae9a76c9 1920{\r
0c9c8e47 1921 struct PicoEState *est = &Pico.est;\r
1922 unsigned char *sprited = &HighLnSpr[est->DrawScanline][0];\r
ae9a76c9 1923 int i;\r
1924\r
0c9c8e47 1925 if (est->DrawScanline == 0 || est->DrawScanline >= rendlines) return;\r
ae9a76c9 1926\r
1927 // compute sprite row. The VDP does this by subtracting the sprite y pos from\r
1928 // the current line and treating the lower 5 bits as the row number. Y pos\r
1929 // is reread from SAT cache, which may have changed by now (Overdrive 2).\r
1930 for (i = 0; i < (sprited[0] & 0x7f); i++) {\r
1931 int num = sprited[4+i] & 0x7f;\r
1932 s32 *sp = HighPreSpr + 2*num + (sprited[0] & 0x80)*2;\r
1933 int link = (sp[0]>>16) & 0x7f;\r
1934 int sy = (CPU_LE2(VdpSATCache[2*link]) & 0x1ff) - 0x80;\r
1935 if (sy != (s16)sp[0]) {\r
1936 // Y info in SAT cache has really changed\r
0c9c8e47 1937 sy = est->DrawScanline - ((est->DrawScanline - sy) & 0x1f);\r
ae9a76c9 1938 sp[0] = (sp[0] & 0xffff0000) | (u16)sy;\r
1939 }\r
1940 }\r
1941}\r
1942\r
724db457 1943void PicoDrawBgcDMA(u16 *base, u32 source, u32 mask, int dlen, int sl)\r
1944{\r
1945 struct PicoEState *est = &Pico.est;\r
1946 int len = (est->Pico->video.reg[12]&1) ? 320 : 256;\r
1947 int xl = (est->Pico->video.reg[12]&1) ? 38 : 33; // DMA slots during HSYNC\r
1948\r
1949 BgcDMAbase = base;\r
1950 BgcDMAsrc = source;\r
1951 BgcDMAmask = mask;\r
1952 BgcDMAlen = dlen;\r
1953 BgcDMAoffs = 0;\r
1954\r
1955 // handle slot offset in 1st line\r
c1812e1a 1956 if (sl-12 > 0)\r
724db457 1957 BgcDMAoffs = 2*(sl-12);\r
1958 else if (sl < 0) { // DMA starts before active display\r
1959 BgcDMAsrc += 2*-sl;\r
1960 BgcDMAlen -= 2*-sl;\r
1961 }\r
1962\r
1963 // skip 1st line if it had been drawn already\r
1964 if (Pico.est.DrawScanline > Pico.m.scanline) {\r
1965 len -= BgcDMAoffs;\r
1966 BgcDMAsrc += (len>>1)+xl;\r
1967 BgcDMAlen -= (len>>1)+xl;\r
1968 BgcDMAoffs = 0;\r
1969 }\r
db1ee7a2 1970 if (BgcDMAlen > 0)\r
1971 est->rendstatus |= PDRAW_BGC_DMA;\r
724db457 1972}\r
1973\r
5a681086 1974// also works for fast renderer\r
1975void PicoDrawUpdateHighPal(void)\r
1976{\r
98a27142 1977 struct PicoEState *est = &Pico.est;\r
17c1401b 1978 if (est->Pico->m.dirtyPal) {\r
1979 int sh = (est->Pico->video.reg[0xC] & 8) >> 3; // shadow/hilight?\r
1980 if ((*est->PicoOpt & POPT_ALT_RENDERER) | (est->rendstatus & PDRAW_SONIC_MODE))\r
b1a047c9 1981 sh = 0; // no s/h support\r
1982\r
7980d477 1983 if (PicoIn.AHW & PAHW_SMS)\r
0df7401c 1984 PicoDoHighPal555SMS();\r
7980d477 1985 else if (FinalizeLine == FinalizeLine8bit)\r
b1a047c9 1986 PicoDoHighPal555_8bit(sh, 0, est);\r
1987 else\r
1988 PicoDoHighPal555(sh, 0, est);\r
5a681086 1989\r
b1a047c9 1990 // cover for sprite priority bits if not in s/h or sonic mode\r
1991 if (!sh && !(est->rendstatus & PDRAW_SONIC_MODE)) {\r
1992 blockcpy(est->HighPal+0x40, est->HighPal, 0x40*2);\r
1993 blockcpy(est->HighPal+0x80, est->HighPal, 0x80*2);\r
1994 }\r
0c9c8e47 1995 est->HighPal[0xe0] = 0x0000; // black and white, reserved for OSD\r
1996 est->HighPal[0xf0] = 0xffff;\r
5a681086 1997 }\r
1998}\r
1999\r
41946d70 2000void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode)\r
cc68a136 2001{\r
7980d477 2002 PicoDrawSetInternalBuf(NULL, 0);\r
aa97a0a0 2003 PicoDrawSetOutBufMD(NULL, 0);\r
f55fb314 2004 PicoDraw2SetOutBuf(NULL, 0);\r
ea8c405f 2005 switch (which)\r
2006 {\r
5a681086 2007 case PDF_8BIT:\r
2008 FinalizeLine = FinalizeLine8bit;\r
2009 break;\r
2010\r
2011 case PDF_RGB555:\r
93f9619e 2012 if ((PicoIn.AHW & PAHW_32X) && use_32x_line_mode)\r
5a681086 2013 FinalizeLine = FinalizeLine32xRGB555;\r
2014 else\r
2015 FinalizeLine = FinalizeLine555;\r
2016 break;\r
2017\r
2018 default:\r
2019 FinalizeLine = NULL;\r
2020 break;\r
ea8c405f 2021 }\r
b1a047c9 2022 if (PicoIn.AHW & PAHW_32X)\r
2023 PicoDrawSetOutFormat32x(which, use_32x_line_mode);\r
0df7401c 2024 PicoDrawSetOutputSMS(which);\r
205bc456 2025 rendstatus_old = -1;\r
207e5ba0 2026 Pico.m.dirtyPal = 1;\r
5a681086 2027}\r
2028\r
b1a047c9 2029void PicoDrawSetOutBufMD(void *dest, int increment)\r
2030{\r
cdc6aac4 2031 if (FinalizeLine == FinalizeLine8bit && increment >= 328) {\r
aa97a0a0 2032 // kludge for no-copy mode, using ALT_RENDERER layout\r
35247900 2033 PicoDrawSetInternalBuf(dest, increment);\r
aa97a0a0 2034 } else if (FinalizeLine == NULL) {\r
0df7401c 2035 PicoDrawSetInternalBuf(dest, increment); // needed for SMS\r
f55fb314 2036 PicoDraw2SetOutBuf(dest, increment);\r
aa97a0a0 2037 } else if (dest != NULL) {\r
f9ed9446 2038 if (dest != DrawLineDestBase)\r
2039 Pico.est.rendstatus |= PDRAW_SYNC_NEEDED;\r
b1a047c9 2040 DrawLineDestBase = dest;\r
2041 DrawLineDestIncrement = increment;\r
61d76999 2042 Pico.est.DrawLineDest = (char *)DrawLineDestBase + Pico.est.DrawScanline * increment;\r
aa97a0a0 2043 } else {\r
b1a047c9 2044 DrawLineDestBase = DefOutBuff;\r
2045 DrawLineDestIncrement = 0;\r
2046 Pico.est.DrawLineDest = DefOutBuff;\r
2047 }\r
2048}\r
2049\r
e51e5983 2050// note: may be called on the middle of frame\r
5a681086 2051void PicoDrawSetOutBuf(void *dest, int increment)\r
2052{\r
b1a047c9 2053 if (PicoIn.AHW & PAHW_32X)\r
2054 PicoDrawSetOutBuf32X(dest, increment);\r
2055 else\r
2056 PicoDrawSetOutBufMD(dest, increment);\r
5a681086 2057}\r
2058\r
2059void PicoDrawSetInternalBuf(void *dest, int increment)\r
2060{\r
2061 if (dest != NULL) {\r
f9ed9446 2062 if (dest != HighColBase)\r
2063 Pico.est.rendstatus |= PDRAW_SYNC_NEEDED;\r
5a681086 2064 HighColBase = dest;\r
2065 HighColIncrement = increment;\r
99bdfd31 2066 Pico.est.HighCol = HighColBase + Pico.est.DrawScanline * increment;\r
5a681086 2067 }\r
2068 else {\r
2069 HighColBase = DefHighCol;\r
2070 HighColIncrement = 0;\r
b1a047c9 2071 Pico.est.HighCol = DefHighCol;\r
5a681086 2072 }\r
cc68a136 2073}\r
ea8c405f 2074\r
f4750ee0 2075void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num))\r
2076{\r
2077 PicoScanBegin = NULL;\r
2078 PicoScanEnd = NULL;\r
2079 PicoScan32xBegin = NULL;\r
2080 PicoScan32xEnd = NULL;\r
2081\r
93f9619e 2082 if ((PicoIn.AHW & PAHW_32X) && FinalizeLine != FinalizeLine32xRGB555) {\r
f4750ee0 2083 PicoScan32xBegin = begin;\r
2084 PicoScan32xEnd = end;\r
2085 }\r
2086 else {\r
2087 PicoScanBegin = begin;\r
2088 PicoScanEnd = end;\r
2089 }\r
2090}\r
ea38612f 2091\r
99bdfd31 2092void PicoDrawInit(void)\r
2093{\r
2094 Pico.est.DrawLineDest = DefOutBuff;\r
2095 Pico.est.HighCol = HighColBase;\r
99bdfd31 2096 rendstatus_old = -1;\r
2097}\r
2098\r
2099// vim:ts=2:sw=2:expandtab\r
fast MegaDrive/MegaCD/32X emulator