cff531af |
1 | /* |
2 | * PicoDrive |
3 | * (C) notaz, 2009,2010 |
4 | * |
5 | * This work is licensed under the terms of MAME license. |
6 | * See COPYING file in the top-level directory. |
7 | */ |
974fdb5b |
8 | #include "../pico_int.h" |
9 | |
5a681086 |
10 | int (*PicoScan32xBegin)(unsigned int num); |
11 | int (*PicoScan32xEnd)(unsigned int num); |
12 | int Pico32xDrawMode; |
13 | |
5e49c3a8 |
14 | static void convert_pal555(int invert_prio) |
974fdb5b |
15 | { |
16 | unsigned int *ps = (void *)Pico32xMem->pal; |
17 | unsigned int *pd = (void *)Pico32xMem->pal_native; |
18 | unsigned int m1 = 0x001f001f; |
19 | unsigned int m2 = 0x03e003e0; |
20 | unsigned int m3 = 0xfc00fc00; |
5e49c3a8 |
21 | unsigned int inv = 0; |
974fdb5b |
22 | int i; |
23 | |
5e49c3a8 |
24 | if (invert_prio) |
25 | inv = 0x00200020; |
26 | |
974fdb5b |
27 | // place prio to LS green bit |
28 | for (i = 0x100/2; i > 0; i--, ps++, pd++) { |
29 | unsigned int t = *ps; |
5e49c3a8 |
30 | *pd = (((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10)) ^ inv; |
974fdb5b |
31 | } |
32 | |
33 | Pico32x.dirty_pal = 0; |
34 | } |
35 | |
5a681086 |
36 | // direct color mode |
37 | #define do_line_dc(pd, p32x, pmd, inv, pmd_draw_code) \ |
38 | { \ |
39 | const unsigned int m1 = 0x001f; \ |
40 | const unsigned int m2 = 0x03e0; \ |
41 | const unsigned int m3 = 0x7c00; \ |
42 | int i; \ |
43 | \ |
44 | for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \ |
45 | unsigned short t = *p32x; \ |
46 | if (*pmd != mdbg && !((t ^ inv) & 0x8000)) { \ |
47 | pmd_draw_code; \ |
48 | continue; \ |
49 | } \ |
50 | \ |
51 | *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); \ |
52 | } \ |
53 | } |
54 | |
55 | // packed pixel mode |
56 | #define do_line_pp(pd, p32x, pmd, pmd_draw_code) \ |
57 | { \ |
58 | unsigned short t; \ |
59 | int i; \ |
e51e5983 |
60 | for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \ |
61 | t = pal[*(unsigned char *)((long)p32x ^ 1)]; \ |
07e5dbab |
62 | if ((t & 0x20) || *pmd == mdbg) \ |
5a681086 |
63 | *pd = t; \ |
64 | else \ |
65 | pmd_draw_code; \ |
5a681086 |
66 | } \ |
67 | } |
68 | |
69 | // run length mode |
70 | #define do_line_rl(pd, p32x, pmd, pmd_draw_code) \ |
71 | { \ |
72 | unsigned short len, t; \ |
73 | int i; \ |
74 | for (i = 320; i > 0; p32x++) { \ |
75 | t = pal[*p32x & 0xff]; \ |
76 | for (len = (*p32x >> 8) + 1; len > 0 && i > 0; len--, i--, pd++, pmd++) { \ |
77 | if (*pmd == mdbg || (t & 0x20)) \ |
78 | *pd = t; \ |
79 | else \ |
80 | pmd_draw_code; \ |
81 | } \ |
82 | } \ |
83 | } |
84 | |
974fdb5b |
85 | void FinalizeLine32xRGB555(int sh, int line) |
86 | { |
87 | unsigned short *pd = DrawLineDest; |
88 | unsigned short *pal = Pico32xMem->pal_native; |
5a681086 |
89 | unsigned char *pmd = HighCol + 8; |
90 | unsigned short *dram, *p32x; |
91 | unsigned char mdbg; |
974fdb5b |
92 | |
5a681086 |
93 | FinalizeLine555(sh, line); |
c987bb5c |
94 | |
5a681086 |
95 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 0 || // 32x blanking |
96 | // XXX: how is 32col mode hadled by real hardware? |
97 | !(Pico.video.reg[12] & 1) || // 32col mode |
98 | !(PicoDrawMask & PDRAW_32X_ON)) |
99 | { |
5e49c3a8 |
100 | return; |
5a681086 |
101 | } |
5e49c3a8 |
102 | |
266c6afa |
103 | dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS]; |
5a681086 |
104 | p32x = dram + dram[line]; |
105 | mdbg = Pico.video.reg[7] & 0x3f; |
266c6afa |
106 | |
107 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode |
5a681086 |
108 | int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; |
109 | do_line_dc(pd, p32x, pmd, inv_bit,); |
266c6afa |
110 | return; |
111 | } |
112 | |
974fdb5b |
113 | if (Pico32x.dirty_pal) |
5e49c3a8 |
114 | convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI); |
974fdb5b |
115 | |
266c6afa |
116 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode |
e51e5983 |
117 | unsigned char *p32xb = (void *)p32x; |
118 | if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT) |
119 | p32xb++; |
120 | do_line_pp(pd, p32xb, pmd,); |
974fdb5b |
121 | } |
266c6afa |
122 | else { // Run Length Mode |
5a681086 |
123 | do_line_rl(pd, p32x, pmd,); |
124 | } |
125 | } |
126 | |
127 | #define MD_LAYER_CODE \ |
128 | *dst = palmd[*pmd] |
129 | |
130 | #define PICOSCAN_PRE \ |
e51e5983 |
131 | PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \ |
5a681086 |
132 | dst = DrawLineDest; \ |
133 | |
134 | #define PICOSCAN_POST \ |
e51e5983 |
135 | PicoScan32xEnd(l + (lines_sft_offs & 0xff)); \ |
5a681086 |
136 | |
137 | #define make_do_loop(name, pre_code, post_code, md_code) \ |
138 | /* Direct Color Mode */ \ |
139 | static void do_loop_dc##name(unsigned short *dst, \ |
e51e5983 |
140 | unsigned short *dram, int lines_sft_offs, int mdbg) \ |
5a681086 |
141 | { \ |
142 | int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; \ |
7a961c19 |
143 | unsigned char *pmd = PicoDraw2FB + \ |
144 | 328 * (lines_sft_offs & 0xff) + 8; \ |
5a681086 |
145 | unsigned short *palmd = HighPal; \ |
146 | unsigned short *p32x; \ |
e51e5983 |
147 | int lines = lines_sft_offs >> 16; \ |
5a681086 |
148 | int l; \ |
149 | (void)palmd; \ |
150 | for (l = 0; l < lines; l++, pmd += 8) { \ |
151 | pre_code; \ |
152 | p32x = dram + dram[l]; \ |
153 | do_line_dc(dst, p32x, pmd, inv_bit, md_code); \ |
154 | post_code; \ |
155 | } \ |
156 | } \ |
157 | \ |
158 | /* Packed Pixel Mode */ \ |
159 | static void do_loop_pp##name(unsigned short *dst, \ |
e51e5983 |
160 | unsigned short *dram, int lines_sft_offs, int mdbg) \ |
5a681086 |
161 | { \ |
162 | unsigned short *pal = Pico32xMem->pal_native; \ |
7a961c19 |
163 | unsigned char *pmd = PicoDraw2FB + \ |
164 | 328 * (lines_sft_offs & 0xff) + 8; \ |
5a681086 |
165 | unsigned short *palmd = HighPal; \ |
e51e5983 |
166 | unsigned char *p32x; \ |
167 | int lines = lines_sft_offs >> 16; \ |
5a681086 |
168 | int l; \ |
169 | (void)palmd; \ |
170 | for (l = 0; l < lines; l++, pmd += 8) { \ |
171 | pre_code; \ |
e51e5983 |
172 | p32x = (void *)(dram + dram[l]); \ |
173 | p32x += (lines_sft_offs >> 8) & 1; \ |
5a681086 |
174 | do_line_pp(dst, p32x, pmd, md_code); \ |
175 | post_code; \ |
176 | } \ |
177 | } \ |
178 | \ |
179 | /* Run Length Mode */ \ |
180 | static void do_loop_rl##name(unsigned short *dst, \ |
e51e5983 |
181 | unsigned short *dram, int lines_sft_offs, int mdbg) \ |
5a681086 |
182 | { \ |
183 | unsigned short *pal = Pico32xMem->pal_native; \ |
7a961c19 |
184 | unsigned char *pmd = PicoDraw2FB + \ |
185 | 328 * (lines_sft_offs & 0xff) + 8; \ |
5a681086 |
186 | unsigned short *palmd = HighPal; \ |
187 | unsigned short *p32x; \ |
e51e5983 |
188 | int lines = lines_sft_offs >> 16; \ |
5a681086 |
189 | int l; \ |
190 | (void)palmd; \ |
191 | for (l = 0; l < lines; l++, pmd += 8) { \ |
192 | pre_code; \ |
193 | p32x = dram + dram[l]; \ |
194 | do_line_rl(dst, p32x, pmd, md_code); \ |
195 | post_code; \ |
196 | } \ |
197 | } |
198 | |
199 | #ifdef _ASM_32X_DRAW |
200 | #undef make_do_loop |
201 | #define make_do_loop(name, pre_code, post_code, md_code) \ |
202 | extern void do_loop_dc##name(unsigned short *dst, \ |
203 | unsigned short *dram, int lines_offs, int mdbg); \ |
204 | extern void do_loop_pp##name(unsigned short *dst, \ |
205 | unsigned short *dram, int lines_offs, int mdbg); \ |
206 | extern void do_loop_rl##name(unsigned short *dst, \ |
207 | unsigned short *dram, int lines_offs, int mdbg); |
208 | #endif |
209 | |
210 | make_do_loop(,,,) |
211 | make_do_loop(_md, , , MD_LAYER_CODE) |
212 | make_do_loop(_scan, PICOSCAN_PRE, PICOSCAN_POST, ) |
213 | make_do_loop(_scan_md, PICOSCAN_PRE, PICOSCAN_POST, MD_LAYER_CODE) |
214 | |
215 | typedef void (*do_loop_func)(unsigned short *dst, unsigned short *dram, int lines, int mdbg); |
216 | enum { DO_LOOP, DO_LOOP_MD, DO_LOOP_SCAN, DO_LOOP_MD_SCAN }; |
217 | |
218 | 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 }; |
219 | 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 }; |
220 | 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 }; |
221 | |
222 | void PicoDraw32xLayer(int offs, int lines, int md_bg) |
223 | { |
224 | int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL; |
225 | const do_loop_func *do_loop; |
226 | unsigned short *dram; |
e51e5983 |
227 | int lines_sft_offs; |
5a681086 |
228 | int which_func; |
229 | |
7a961c19 |
230 | DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement; |
5a681086 |
231 | dram = Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS]; |
232 | |
7a961c19 |
233 | if (Pico32xDrawMode == PDM32X_BOTH) { |
5a681086 |
234 | if (Pico.m.dirtyPal) |
235 | PicoDrawUpdateHighPal(); |
236 | } |
237 | |
238 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) |
239 | { |
240 | // Direct Color Mode |
241 | do_loop = do_loop_dc_f; |
242 | goto do_it; |
243 | } |
244 | |
245 | if (Pico32x.dirty_pal) |
246 | convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI); |
247 | |
248 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) |
249 | { |
250 | // Packed Pixel Mode |
251 | do_loop = do_loop_pp_f; |
252 | } |
253 | else |
254 | { |
255 | // Run Length Mode |
256 | do_loop = do_loop_rl_f; |
257 | } |
258 | |
259 | do_it: |
7a961c19 |
260 | if (Pico32xDrawMode == PDM32X_BOTH) |
5a681086 |
261 | which_func = have_scan ? DO_LOOP_MD_SCAN : DO_LOOP_MD; |
262 | else |
263 | which_func = have_scan ? DO_LOOP_SCAN : DO_LOOP; |
e51e5983 |
264 | lines_sft_offs = (lines << 16) | offs; |
265 | if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT) |
266 | lines_sft_offs |= 1 << 8; |
5a681086 |
267 | |
e51e5983 |
268 | do_loop[which_func](DrawLineDest, dram, lines_sft_offs, md_bg); |
5a681086 |
269 | } |
270 | |
7a961c19 |
271 | // mostly unused, games tend to keep 32X layer on |
272 | void PicoDraw32xLayerMdOnly(int offs, int lines) |
273 | { |
274 | int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL; |
275 | unsigned short *dst = (void *)((char *)DrawLineDestBase + offs * DrawLineDestIncrement); |
276 | unsigned char *pmd = PicoDraw2FB + 328 * offs + 8; |
277 | unsigned short *pal = HighPal; |
278 | int poffs = 0, plen = 320; |
279 | int l, p; |
280 | |
281 | if (!(Pico.video.reg[12] & 1)) { |
282 | // 32col mode |
283 | poffs = 32; |
284 | plen = 256; |
285 | } |
286 | |
287 | if (Pico.m.dirtyPal) |
288 | PicoDrawUpdateHighPal(); |
289 | |
290 | dst += poffs; |
291 | for (l = 0; l < lines; l++) { |
292 | if (have_scan) { |
293 | PicoScan32xBegin(l + offs); |
294 | dst = DrawLineDest + poffs; |
295 | } |
296 | for (p = 0; p < plen; p += 4) { |
297 | dst[p + 0] = pal[*pmd++]; |
298 | dst[p + 1] = pal[*pmd++]; |
299 | dst[p + 2] = pal[*pmd++]; |
300 | dst[p + 3] = pal[*pmd++]; |
301 | } |
302 | dst = (void *)((char *)dst + DrawLineDestIncrement); |
303 | pmd += 328 - plen; |
304 | if (have_scan) |
305 | PicoScan32xEnd(l + offs); |
306 | } |
307 | } |
308 | |
5a681086 |
309 | void PicoDraw32xSetFrameMode(int is_on, int only_32x) |
310 | { |
311 | #ifdef _ASM_32X_DRAW |
312 | extern void *Pico32xNativePal; |
313 | Pico32xNativePal = Pico32xMem->pal_native; |
314 | #endif |
315 | |
316 | if (is_on) { |
317 | // use the same layout as alt renderer |
a2b8c5a5 |
318 | PicoDrawSetInternalBuf(PicoDraw2FB, 328); |
7a961c19 |
319 | Pico32xDrawMode = only_32x ? PDM32X_32X_ONLY : PDM32X_BOTH; |
5a681086 |
320 | } else { |
321 | PicoDrawSetInternalBuf(NULL, 0); |
7a961c19 |
322 | Pico32xDrawMode = PDM32X_OFF; |
266c6afa |
323 | } |
974fdb5b |
324 | } |
325 | |