63bd5be0 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 1998 \Firebug\ |
5 | * Copyright (C) 2002 Ben Parnell |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 | */ |
21 | |
22 | #include <stdio.h> |
23 | #include <string.h> |
24 | #include <vga.h> |
25 | #include <sys/io.h> |
26 | |
27 | #define inportb inb |
28 | #define outportb(port, value) outb(value, port) |
29 | #define outportw(port, value) outw(value, port) |
30 | |
31 | #include "main.h" |
32 | #include "svgalib.h" |
33 | #include "svga-video.h" |
34 | |
35 | |
36 | int vmode=1; |
37 | |
38 | #ifdef FRAMESKIP |
39 | int FCEUDfskip=0; |
40 | #endif |
41 | |
42 | static int vidready=0; |
43 | static int conlock=0; |
44 | |
45 | void LockConsole(void) |
46 | { |
47 | if(!conlock) |
48 | { |
49 | vga_lockvc(); |
50 | conlock=1; |
51 | FCEUI_DispMessage("Console locked."); |
52 | } |
53 | } |
54 | |
55 | void UnlockConsole(void) |
56 | { |
57 | if(conlock) |
58 | { |
59 | vga_unlockvc(); |
60 | conlock=0; |
61 | FCEUI_DispMessage("Console unlocked."); |
62 | } |
63 | } |
64 | |
65 | void SetBorder(void) |
66 | { |
67 | if(!conlock) |
68 | vga_lockvc(); |
69 | inportb(0x3da); |
70 | outportb(0x3c0,(0x11|0x20)); |
71 | outportb(0x3c0,0x80); |
72 | if(!conlock) |
73 | vga_unlockvc(); |
74 | } |
75 | |
76 | #include "vgatweak.c" |
77 | |
78 | void TweakVGA(int VGAMode) |
79 | { |
80 | int I; |
81 | |
82 | if(!conlock) |
83 | vga_lockvc(); |
84 | |
85 | outportb(0x3C8,0x00); |
86 | for(I=0;I<768;I++) outportb(0x3C9,0x00); |
87 | |
88 | outportb(0x3D4,0x11); |
89 | I=inportb(0x3D5)&0x7F; |
90 | outportb(0x3D4,0x11); |
91 | outportb(0x3D5,I); |
92 | |
93 | switch(VGAMode) |
94 | { |
95 | case 1: for(I=0;I<25;I++) VGAPortSet(v256x240[I]);break; |
96 | case 2: for(I=0;I<25;I++) VGAPortSet(v256x256[I]);break; |
97 | case 3: for(I=0;I<25;I++) VGAPortSet(v256x256S[I]);break; |
98 | case 6: for(I=0;I<25;I++) VGAPortSet(v256x224S[I]);break; |
99 | case 8: for(I=0;I<25;I++) VGAPortSet(v256x224_103[I]);break; |
100 | default: break; |
101 | } |
102 | |
103 | outportb(0x3da,0); |
104 | if(!conlock) |
105 | vga_unlockvc(); |
106 | } |
107 | |
108 | |
109 | static uint8 palettedbr[256],palettedbg[256],palettedbb[256]; |
110 | |
111 | static void FlushPalette(void) |
112 | { |
113 | int x; |
114 | for(x=0;x<256;x++) |
115 | { |
116 | int z=x; |
117 | if(vmode==4 || vmode==5 || vmode==7) z^=0x80; |
118 | vga_setpalette(z,palettedbr[x]>>2,palettedbg[x]>>2,palettedbb[x]>>2); |
119 | } |
120 | } |
121 | |
122 | void FCEUD_SetPalette(uint8 index, uint8 r, uint8 g, uint8 b) |
123 | { |
124 | palettedbr[index]=r; |
125 | palettedbg[index]=g; |
126 | palettedbb[index]=b; |
127 | |
128 | if(vidready) |
129 | { |
130 | if(vmode==4 || vmode==5 || vmode==7) index^=0x80; |
131 | vga_setpalette(index,r>>2,g>>2,b>>2); |
132 | } |
133 | } |
134 | |
135 | |
136 | void FCEUD_GetPalette(uint8 i, uint8 *r, uint8 *g, uint8 *b) |
137 | { |
138 | *r=palettedbr[i]; |
139 | *g=palettedbg[i]; |
140 | *b=palettedbb[i]; |
141 | } |
142 | |
143 | static void vcfix(void) |
144 | { |
145 | int z; |
146 | |
147 | if(!conlock) |
148 | vga_lockvc(); |
149 | z=inportb(0x3cc); |
150 | if(!conlock) |
151 | vga_unlockvc(); |
152 | if(z!=0xe3 && z!=0xe7) // Common value in all tweaked video modes(and not in 320x200 mode). |
153 | { |
154 | TweakVGA(vmode); |
155 | SetBorder(); |
156 | FlushPalette(); |
157 | } |
158 | } |
159 | |
160 | static uint8 *ScreenLoc; |
161 | |
162 | int InitVideo(void) |
163 | { |
164 | #ifdef DUMMY |
165 | return(1); |
166 | #endif |
167 | vidready=0; |
168 | |
169 | if(vmode<=3 || vmode==6 || vmode==8) |
170 | { |
171 | if(vga_getcurrentchipset()==FBDEV) |
172 | { |
173 | puts("Tweaked VGA video modes will not work. Using a 320x240 video mode instead..."); |
174 | vmode=7; |
175 | } |
176 | } |
177 | |
178 | switch(vmode) |
179 | { |
180 | default: |
181 | case 1: |
182 | case 2: |
183 | case 3: |
184 | case 6: |
185 | case 8: |
186 | vga_setmode(G320x200x256); |
187 | vidready|=1; |
188 | ScreenLoc=vga_getgraphmem(); |
189 | TweakVGA(vmode); |
190 | SetBorder(); |
191 | memset(ScreenLoc,128,256*256); |
192 | break; |
193 | case 4: |
194 | case 5: |
195 | if(!(vga_getmodeinfo(G640x480x256)->flags & CAPABLE_LINEAR)) |
196 | { |
197 | puts("Video: No linear addressing mode available!"); |
198 | return 0; |
199 | } |
200 | if(vga_setmode(G640x480x256)==-1) |
201 | { |
202 | puts("Video: Could not set 640x480x8bpp video mode!"); |
203 | return 0; |
204 | } |
205 | vidready|=1; |
206 | |
207 | vga_setpage(0); |
208 | if(vga_setlinearaddressing()!=-1) |
209 | ScreenLoc=vga_getgraphmem(); |
210 | else |
211 | { |
212 | puts("Video: Could not set linear addressing!"); |
213 | return 0; |
214 | } |
215 | memset(ScreenLoc,0,640*480); |
216 | break; |
217 | case 7: |
218 | if(!(vga_getmodeinfo(G320x240x256V)->flags & CAPABLE_LINEAR)) |
219 | { |
220 | puts("Video: No linear addressing mode available!"); |
221 | return 0; |
222 | } |
223 | if(vga_setmode(G320x240x256V)==-1) |
224 | { |
225 | puts("Video: Could not set 320x240x8bpp video mode!"); |
226 | return 0; |
227 | } |
228 | vidready|=1; |
229 | |
230 | vga_setpage(0); |
231 | if(vga_setlinearaddressing()!=-1) |
232 | ScreenLoc=vga_getgraphmem(); |
233 | else |
234 | { |
235 | puts("Video: Could not set linear addressing!"); |
236 | return 0; |
237 | } |
238 | memset(ScreenLoc,0,320*240); |
239 | break; |
240 | } |
241 | vidready|=2; |
242 | FlushPalette(); // Needed for cheat console code(and it isn't a bad thing to do anyway...). |
243 | return 1; |
244 | } |
245 | |
246 | void KillVideo(void) |
247 | { |
248 | if(vidready) |
249 | { |
250 | vga_setmode(TEXT); |
251 | vidready=0; |
252 | } |
253 | } |
254 | |
255 | |
256 | void BlitScreen(uint8 *XBuf) |
257 | { |
258 | static int conto=0; |
259 | uint8 *dest; |
260 | int tlines; |
261 | #ifdef DUMMY |
262 | return; |
263 | #endif |
264 | #ifdef FRAMESKIP |
265 | FCEUI_FrameSkip(FCEUDfskip); |
266 | #endif |
267 | |
268 | if(doptions&DO_VSYNC && !NoWaiting) |
269 | { |
270 | vga_waitretrace(); |
271 | } |
272 | |
273 | tlines=erendline-srendline+1; |
274 | |
275 | dest=ScreenLoc; |
276 | |
277 | if(vmode!=4 && vmode!=5 && vmode!=7) |
278 | { |
279 | conto=(conto+1)&0x3F; |
280 | if(!conto) vcfix(); |
281 | } |
282 | switch(vmode) |
283 | { |
284 | case 1:dest+=(((240-tlines)>>1)<<8);break; |
285 | case 2: |
286 | case 3:dest+=(((256-tlines)>>1)<<8);break; |
287 | case 4: |
288 | case 5:dest+=(((240-tlines)>>1)*640+((640-512)>>1));break; |
289 | case 8: |
290 | case 6:if(tlines>224) tlines=224;dest+=(((224-tlines)>>1)<<8);break; |
291 | case 7:dest+=(((240-tlines)>>1)*320)+32;break; |
292 | } |
293 | |
294 | XBuf+=(srendline<<8)+(srendline<<4); |
295 | |
296 | if(eoptions&EO_CLIPSIDES) |
297 | { |
298 | if(vmode==5) |
299 | { |
300 | asm volatile( |
301 | "xorl %%edx, %%edx\n\t" |
302 | "ckoop1:\n\t" |
303 | "movb $120,%%al \n\t" |
304 | "ckoop2:\n\t" |
305 | "movb 1(%%esi),%%dl\n\t" |
306 | "shl $16,%%edx\n\t" |
307 | "movb (%%esi),%%dl\n\t" |
308 | "xorl $0x00800080,%%edx\n\t" |
309 | "movl %%edx,(%%edi)\n\t" |
310 | "addl $2,%%esi\n\t" |
311 | "addl $4,%%edi\n\t" |
312 | "decb %%al\n\t" |
313 | "jne ckoop2\n\t" |
314 | |
315 | "addl $32,%%esi\n\t" |
316 | "addl $800,%%edi\n\t" |
317 | "decb %%bl\n\t" |
318 | "jne ckoop1\n\t" |
319 | : |
320 | : "S" (XBuf+8), "D" (dest+8), "b" (tlines) |
321 | : "%al", "%edx", "%cc" ); |
322 | } |
323 | else if(vmode==4) |
324 | { |
325 | asm volatile( |
326 | "cyoop1:\n\t" |
327 | "movb $120,%%al \n\t" |
328 | "cyoop2:\n\t" |
329 | "movb 1(%%esi),%%dh\n\t" |
330 | "movb %%dh,%%dl\n\t" |
331 | "shl $16,%%edx\n\t" |
332 | "movb (%%esi),%%dl\n\t" |
333 | "movb %%dl,%%dh\n\t" // Ugh |
334 | "xorl $0x80808080,%%edx\n\t" |
335 | "movl %%edx,(%%edi)\n\t" |
336 | "addl $2,%%esi\n\t" |
337 | "addl $4,%%edi\n\t" |
338 | "decb %%al\n\t" |
339 | "jne cyoop2\n\t" |
340 | |
341 | "addl $32,%%esi\n\t" |
342 | "addl $800,%%edi\n\t" |
343 | "decb %%bl\n\t" |
344 | "jne cyoop1\n\t" |
345 | : |
346 | : "S" (XBuf+8), "D" (dest+8), "b" (tlines) |
347 | : "%al", "%edx", "%cc" ); |
348 | } |
349 | else if(vmode==7) |
350 | { |
351 | asm volatile( |
352 | "cgoop81:\n\t" |
353 | "movl $30,%%eax\n\t" |
354 | "cgoop82:\n\t" |
355 | "movl (%%esi),%%edx\n\t" |
356 | "movl 4(%%esi),%%ecx\n\t" |
357 | "xorl $0x80808080,%%edx\n\t" |
358 | "xorl $0x80808080,%%ecx\n\t" |
359 | "movl %%edx,(%%edi)\n\t" |
360 | "movl %%ecx,4(%%edi)\n\t" |
361 | "addl $8,%%esi\n\t" |
362 | "addl $8,%%edi\n\t" |
363 | "decl %%eax\n\t" |
364 | "jne cgoop82\n\t" |
365 | "addl $80,%%edi\n\t" |
366 | "addl $32,%%esi\n\t" |
367 | "decb %%bl\n\t" |
368 | "jne cgoop81\n\t" |
369 | : |
370 | : "S" (XBuf+8), "D" (dest+8), "b" (tlines) |
371 | : "%eax","%cc","%edx","%ecx" ); |
372 | } |
373 | else |
374 | { |
375 | asm volatile( |
376 | "cgoop1:\n\t" |
377 | "movl $30,%%eax\n\t" |
378 | "cgoop2:\n\t" |
379 | "movl (%%esi),%%edx\n\t" |
380 | "movl 4(%%esi),%%ecx\n\t" |
381 | "movl %%edx,(%%edi)\n\t" |
382 | "movl %%ecx,4(%%edi)\n\t" |
383 | "addl $8,%%esi\n\t" |
384 | "addl $8,%%edi\n\t" |
385 | "decl %%eax\n\t" |
386 | "jne cgoop2\n\t" |
387 | "addl $32,%%esi\n\t" |
388 | "addl $16,%%edi\n\t" |
389 | "decb %%bl\n\t" |
390 | "jne cgoop1\n\t" |
391 | : |
392 | : "S" (XBuf+8), "D" (dest+8), "b" (tlines) |
393 | : "%eax","%cc","%edx","%ecx" ); |
394 | } |
395 | } |
396 | else |
397 | { |
398 | if(vmode==5) |
399 | { |
400 | asm volatile( |
401 | "xorl %%edx, %%edx\n\t" |
402 | "koop1:\n\t" |
403 | "movb $128,%%al \n\t" |
404 | "koop2:\n\t" |
405 | "movb 1(%%esi),%%dl\n\t" |
406 | "shl $16,%%edx\n\t" |
407 | "movb (%%esi),%%dl\n\t" |
408 | "xorl $0x00800080,%%edx\n\t" |
409 | "movl %%edx,(%%edi)\n\t" |
410 | "addl $2,%%esi\n\t" |
411 | "addl $4,%%edi\n\t" |
412 | "decb %%al\n\t" |
413 | "jne koop2\n\t" |
414 | |
415 | "addl $16,%%esi\n\t" |
416 | "addl $768,%%edi\n\t" |
417 | "decb %%bl\n\t" |
418 | "jne koop1\n\t" |
419 | : |
420 | : "S" (XBuf), "D" (dest), "b" (tlines) |
421 | : "%al", "%edx", "%cc" ); |
422 | } |
423 | else if(vmode==4) |
424 | { |
425 | asm volatile( |
426 | "yoop1:\n\t" |
427 | "movb $128,%%al \n\t" |
428 | "yoop2:\n\t" |
429 | "movb 1(%%esi),%%dh\n\t" |
430 | "movb %%dh,%%dl\n\t" |
431 | "shl $16,%%edx\n\t" |
432 | "movb (%%esi),%%dl\n\t" |
433 | "movb %%dl,%%dh\n\t" // Ugh |
434 | "xorl $0x80808080,%%edx\n\t" |
435 | "movl %%edx,(%%edi)\n\t" |
436 | "addl $2,%%esi\n\t" |
437 | "addl $4,%%edi\n\t" |
438 | "decb %%al\n\t" |
439 | "jne yoop2\n\t" |
440 | |
441 | "addl $16,%%esi\n\t" |
442 | "addl $768,%%edi\n\t" |
443 | "decb %%bl\n\t" |
444 | "jne yoop1\n\t" |
445 | : |
446 | : "S" (XBuf), "D" (dest), "b" (tlines) |
447 | : "%al", "%edx", "%cc" ); |
448 | } |
449 | else if(vmode==7) |
450 | { |
451 | asm volatile( |
452 | "goop81:\n\t" |
453 | "movl $32,%%eax\n\t" |
454 | "goop82:\n\t" |
455 | "movl (%%esi),%%edx\n\t" |
456 | "movl 4(%%esi),%%ecx\n\t" |
457 | "xorl $0x80808080,%%edx\n\t" |
458 | "xorl $0x80808080,%%ecx\n\t" |
459 | "movl %%edx,(%%edi)\n\t" |
460 | "movl %%ecx,4(%%edi)\n\t" |
461 | "addl $8,%%esi\n\t" |
462 | "addl $8,%%edi\n\t" |
463 | "decl %%eax\n\t" |
464 | "jne goop82\n\t" |
465 | "addl $64,%%edi\n\t" |
466 | "addl $16,%%esi\n\t" |
467 | "decb %%bl\n\t" |
468 | "jne goop81\n\t" |
469 | : |
470 | : "S" (XBuf), "D" (dest), "b" (tlines) |
471 | : "%eax","%cc","%edx","%ecx" ); |
472 | } |
473 | else |
474 | { |
475 | asm volatile( |
476 | "goop1:\n\t" |
477 | "movl $32,%%eax\n\t" |
478 | "goop2:\n\t" |
479 | "movl (%%esi),%%edx\n\t" |
480 | "movl 4(%%esi),%%ecx\n\t" |
481 | "movl %%edx,(%%edi)\n\t" |
482 | "movl %%ecx,4(%%edi)\n\t" |
483 | "addl $8,%%esi\n\t" |
484 | "addl $8,%%edi\n\t" |
485 | "decl %%eax\n\t" |
486 | "jne goop2\n\t" |
487 | "addl $16,%%esi\n\t" |
488 | "decb %%bl\n\t" |
489 | "jne goop1\n\t" |
490 | : |
491 | : "S" (XBuf), "D" (dest), "b" (tlines) |
492 | : "%eax","%cc","%edx","%ecx" ); |
493 | } |
494 | } |
495 | } |
496 | |
497 | |