Commit | Line | Data |
---|---|---|
ef79bbde P |
1 | /*************************************************************************** |
2 | gpu.c - description | |
3 | ------------------- | |
4 | begin : Sun Oct 28 2001 | |
5 | copyright : (C) 2001 by Pete Bernert | |
6 | email : BlackDove@addcom.de | |
7 | ***************************************************************************/ | |
8 | /*************************************************************************** | |
9 | * * | |
10 | * This program is free software; you can redistribute it and/or modify * | |
11 | * it under the terms of the GNU General Public License as published by * | |
12 | * the Free Software Foundation; either version 2 of the License, or * | |
13 | * (at your option) any later version. See also the license.txt file for * | |
14 | * additional informations. * | |
15 | * * | |
16 | ***************************************************************************/ | |
17 | ||
ef79bbde | 18 | #include "gpu.h" |
ef79bbde P |
19 | #include "stdint.h" |
20 | #include "psemu_plugin_defs.h" | |
ef79bbde P |
21 | |
22 | //////////////////////////////////////////////////////////////////////// | |
23 | // memory image of the PSX vram | |
24 | //////////////////////////////////////////////////////////////////////// | |
25 | ||
26 | unsigned char *psxVSecure; | |
27 | unsigned char *psxVub; | |
28 | signed char *psxVsb; | |
29 | unsigned short *psxVuw; | |
30 | unsigned short *psxVuw_eom; | |
31 | signed short *psxVsw; | |
a96a5eb2 | 32 | uint32_t *psxVul; |
ef79bbde P |
33 | int32_t *psxVsl; |
34 | ||
35 | //////////////////////////////////////////////////////////////////////// | |
36 | // GPU globals | |
37 | //////////////////////////////////////////////////////////////////////// | |
38 | ||
39 | static long lGPUdataRet; | |
40 | long lGPUstatusRet; | |
a96a5eb2 | 41 | uint32_t ulStatusControl[256]; |
ef79bbde P |
42 | |
43 | static uint32_t gpuDataM[256]; | |
44 | static unsigned char gpuCommand = 0; | |
45 | static long gpuDataC = 0; | |
46 | static long gpuDataP = 0; | |
47 | ||
48 | VRAMLoad_t VRAMWrite; | |
49 | VRAMLoad_t VRAMRead; | |
50 | DATAREGISTERMODES DataWriteMode; | |
51 | DATAREGISTERMODES DataReadMode; | |
52 | ||
53 | BOOL bSkipNextFrame = FALSE; | |
79f58413 | 54 | BOOL fskip_frameReady; |
55 | DWORD lace_count_since_flip; | |
ef79bbde | 56 | DWORD dwLaceCnt=0; |
ef79bbde P |
57 | short sDispWidths[8] = {256,320,512,640,368,384,512,640}; |
58 | PSXDisplay_t PSXDisplay; | |
59 | PSXDisplay_t PreviousPSXDisplay; | |
60 | long lSelectedSlot=0; | |
ef79bbde P |
61 | BOOL bDoLazyUpdate=FALSE; |
62 | uint32_t lGPUInfoVals[16]; | |
63 | static int iFakePrimBusy=0; | |
2588a938 | 64 | static uint32_t vBlank=0; |
e64dc4c5 | 65 | static const int *skip_advice; |
ef79bbde P |
66 | |
67 | //////////////////////////////////////////////////////////////////////// | |
68 | // some misc external display funcs | |
69 | //////////////////////////////////////////////////////////////////////// | |
70 | ||
71 | #include <time.h> | |
ef79bbde | 72 | |
a96a5eb2 | 73 | // FPS library |
74 | #include "fps.c" | |
ef79bbde | 75 | |
ef79bbde P |
76 | |
77 | //////////////////////////////////////////////////////////////////////// | |
a96a5eb2 | 78 | // sets all kind of act fixes |
ef79bbde P |
79 | //////////////////////////////////////////////////////////////////////// |
80 | ||
a96a5eb2 | 81 | static void SetFixes(void) |
82 | { | |
83 | if(dwActFixes&0x02) sDispWidths[4]=384; | |
84 | else sDispWidths[4]=368; | |
85 | } | |
ef79bbde P |
86 | |
87 | //////////////////////////////////////////////////////////////////////// | |
88 | // INIT, will be called after lib load... well, just do some var init... | |
89 | //////////////////////////////////////////////////////////////////////// | |
90 | ||
a96a5eb2 | 91 | long CALLBACK GPUinit(void) // GPU INIT |
ef79bbde P |
92 | { |
93 | memset(ulStatusControl,0,256*sizeof(uint32_t)); // init save state scontrol field | |
94 | ||
a96a5eb2 | 95 | psxVSecure = (unsigned char *)malloc((512*2)*1024 + (1024*1024)); // always alloc one extra MB for soft drawing funcs security |
ef79bbde P |
96 | if (!psxVSecure) |
97 | return -1; | |
98 | ||
99 | //!!! ATTENTION !!! | |
100 | psxVub=psxVSecure + 512 * 1024; // security offset into double sized psx vram! | |
101 | ||
102 | psxVsb=(signed char *)psxVub; // different ways of accessing PSX VRAM | |
103 | psxVsw=(signed short *)psxVub; | |
104 | psxVsl=(int32_t *)psxVub; | |
105 | psxVuw=(unsigned short *)psxVub; | |
106 | psxVul=(uint32_t *)psxVub; | |
107 | ||
a96a5eb2 | 108 | psxVuw_eom=psxVuw+1024*512; // pre-calc of end of vram |
ef79bbde | 109 | |
a96a5eb2 | 110 | memset(psxVSecure,0x00,(512*2)*1024 + (1024*1024)); |
ef79bbde P |
111 | memset(lGPUInfoVals,0x00,16*sizeof(uint32_t)); |
112 | ||
ef79bbde P |
113 | PSXDisplay.RGB24 = FALSE; // init some stuff |
114 | PSXDisplay.Interlaced = FALSE; | |
115 | PSXDisplay.DrawOffset.x = 0; | |
116 | PSXDisplay.DrawOffset.y = 0; | |
117 | PSXDisplay.DisplayMode.x= 320; | |
118 | PSXDisplay.DisplayMode.y= 240; | |
119 | PreviousPSXDisplay.DisplayMode.x= 320; | |
120 | PreviousPSXDisplay.DisplayMode.y= 240; | |
121 | PSXDisplay.Disabled = FALSE; | |
122 | PreviousPSXDisplay.Range.x0 =0; | |
123 | PreviousPSXDisplay.Range.y0 =0; | |
124 | PSXDisplay.Range.x0=0; | |
125 | PSXDisplay.Range.x1=0; | |
126 | PreviousPSXDisplay.DisplayModeNew.y=0; | |
127 | PSXDisplay.Double = 1; | |
128 | lGPUdataRet = 0x400; | |
129 | ||
130 | DataWriteMode = DR_NORMAL; | |
131 | ||
132 | // Reset transfer values, to prevent mis-transfer of data | |
133 | memset(&VRAMWrite, 0, sizeof(VRAMLoad_t)); | |
134 | memset(&VRAMRead, 0, sizeof(VRAMLoad_t)); | |
135 | ||
136 | // device initialised already ! | |
137 | lGPUstatusRet = 0x14802000; | |
138 | GPUIsIdle; | |
139 | GPUIsReadyForCommands; | |
140 | bDoVSyncUpdate = TRUE; | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | //////////////////////////////////////////////////////////////////////// | |
146 | // Here starts all... | |
147 | //////////////////////////////////////////////////////////////////////// | |
148 | ||
149 | ||
150 | long GPUopen(unsigned long * disp,char * CapText,char * CfgFile) | |
151 | { | |
152 | unsigned long d; | |
a96a5eb2 | 153 | |
154 | SetFixes(); | |
ef79bbde P |
155 | |
156 | InitFPS(); | |
157 | ||
ef79bbde P |
158 | bDoVSyncUpdate = TRUE; |
159 | ||
160 | d=ulInitDisplay(); // setup x | |
161 | ||
162 | if(disp) | |
163 | *disp=d; // wanna x pointer? ok | |
164 | ||
165 | if(d) return 0; | |
166 | return -1; | |
167 | } | |
168 | ||
169 | ||
170 | //////////////////////////////////////////////////////////////////////// | |
171 | // time to leave... | |
172 | //////////////////////////////////////////////////////////////////////// | |
173 | ||
174 | long CALLBACK GPUclose() // GPU CLOSE | |
175 | { | |
ef79bbde P |
176 | CloseDisplay(); // shutdown direct draw |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | //////////////////////////////////////////////////////////////////////// | |
182 | // I shot the sheriff | |
183 | //////////////////////////////////////////////////////////////////////// | |
184 | ||
a96a5eb2 | 185 | long CALLBACK GPUshutdown(void) // GPU SHUTDOWN |
ef79bbde | 186 | { |
a96a5eb2 | 187 | CloseDisplay(); // shutdown direct draw |
ef79bbde | 188 | free(psxVSecure); |
ef79bbde P |
189 | return 0; // nothinh to do |
190 | } | |
191 | ||
192 | //////////////////////////////////////////////////////////////////////// | |
193 | // Update display (swap buffers) | |
194 | //////////////////////////////////////////////////////////////////////// | |
195 | ||
a96a5eb2 | 196 | static void updateDisplay(void) // UPDATE DISPLAY |
ef79bbde P |
197 | { |
198 | if(PSXDisplay.Disabled) // disable? | |
199 | { | |
ef79bbde P |
200 | return; // -> and bye |
201 | } | |
202 | ||
203 | if(dwActFixes&32) // pc fps calculation fix | |
204 | { | |
205 | if(UseFrameLimit) PCFrameCap(); // -> brake | |
a96a5eb2 | 206 | if(UseFrameSkip) PCcalcfps(); |
ef79bbde P |
207 | } |
208 | ||
209 | if(UseFrameSkip) // skip ? | |
210 | { | |
79f58413 | 211 | if(fskip_frameReady) |
ef79bbde | 212 | { |
79f58413 | 213 | DoBufferSwap(); // -> to skip or not to skip |
214 | fskip_frameReady=FALSE; | |
215 | bDoVSyncUpdate=FALSE; // vsync done | |
ef79bbde | 216 | } |
ef79bbde P |
217 | } |
218 | else // no skip ? | |
219 | { | |
0d8f5b89 | 220 | bSkipNextFrame = FALSE; |
ef79bbde | 221 | DoBufferSwap(); // -> swap |
79f58413 | 222 | bDoVSyncUpdate=FALSE; // vsync done |
ef79bbde | 223 | } |
79f58413 | 224 | } |
225 | ||
226 | static void decideSkip(void) | |
227 | { | |
228 | if(!bDoVSyncUpdate) | |
229 | return; | |
230 | ||
231 | lace_count_since_flip=0; | |
232 | fskip_frameReady=!bSkipNextFrame; | |
f1bad6e1 | 233 | |
79f58413 | 234 | if(dwActFixes&0xa0) // -> pc fps calculation fix/old skipping fix |
235 | { | |
e64dc4c5 | 236 | int skip = (skip_advice && *skip_advice) || fps_skip < fFrameRateHz; |
237 | if(skip && !bSkipNextFrame) // -> skip max one in a row | |
79f58413 | 238 | {bSkipNextFrame = TRUE; fps_skip=fFrameRateHz;} |
239 | else bSkipNextFrame = FALSE; | |
240 | } | |
241 | else FrameSkip(); | |
ef79bbde P |
242 | } |
243 | ||
244 | //////////////////////////////////////////////////////////////////////// | |
245 | // roughly emulated screen centering bits... not complete !!! | |
246 | //////////////////////////////////////////////////////////////////////// | |
247 | ||
248 | void ChangeDispOffsetsX(void) // X CENTER | |
249 | { | |
250 | long lx,l; | |
251 | ||
252 | if(!PSXDisplay.Range.x1) return; | |
253 | ||
254 | l=PreviousPSXDisplay.DisplayMode.x; | |
255 | ||
256 | l*=(long)PSXDisplay.Range.x1; | |
257 | l/=2560;lx=l;l&=0xfffffff8; | |
258 | ||
259 | if(l==PreviousPSXDisplay.Range.y1) return; // abusing range.y1 for | |
260 | PreviousPSXDisplay.Range.y1=(short)l; // storing last x range and test | |
261 | ||
262 | if(lx>=PreviousPSXDisplay.DisplayMode.x) | |
263 | { | |
264 | PreviousPSXDisplay.Range.x1= | |
265 | (short)PreviousPSXDisplay.DisplayMode.x; | |
266 | PreviousPSXDisplay.Range.x0=0; | |
267 | } | |
268 | else | |
269 | { | |
270 | PreviousPSXDisplay.Range.x1=(short)l; | |
271 | ||
272 | PreviousPSXDisplay.Range.x0= | |
273 | (PSXDisplay.Range.x0-500)/8; | |
274 | ||
275 | if(PreviousPSXDisplay.Range.x0<0) | |
276 | PreviousPSXDisplay.Range.x0=0; | |
277 | ||
278 | if((PreviousPSXDisplay.Range.x0+lx)> | |
279 | PreviousPSXDisplay.DisplayMode.x) | |
280 | { | |
281 | PreviousPSXDisplay.Range.x0= | |
282 | (short)(PreviousPSXDisplay.DisplayMode.x-lx); | |
283 | PreviousPSXDisplay.Range.x0+=2; //??? | |
284 | ||
285 | PreviousPSXDisplay.Range.x1+=(short)(lx-l); | |
286 | ||
287 | PreviousPSXDisplay.Range.x1-=2; // makes linux stretching easier | |
288 | ||
289 | } | |
290 | ||
ef79bbde P |
291 | // some linux alignment security |
292 | PreviousPSXDisplay.Range.x0=PreviousPSXDisplay.Range.x0>>1; | |
293 | PreviousPSXDisplay.Range.x0=PreviousPSXDisplay.Range.x0<<1; | |
294 | PreviousPSXDisplay.Range.x1=PreviousPSXDisplay.Range.x1>>1; | |
295 | PreviousPSXDisplay.Range.x1=PreviousPSXDisplay.Range.x1<<1; | |
296 | ||
ef79bbde P |
297 | DoClearScreenBuffer(); |
298 | } | |
299 | ||
300 | bDoVSyncUpdate=TRUE; | |
301 | } | |
302 | ||
303 | //////////////////////////////////////////////////////////////////////// | |
304 | ||
305 | void ChangeDispOffsetsY(void) // Y CENTER | |
306 | { | |
307 | int iT,iO=PreviousPSXDisplay.Range.y0; | |
308 | int iOldYOffset=PreviousPSXDisplay.DisplayModeNew.y; | |
309 | ||
310 | // new | |
311 | ||
a96a5eb2 | 312 | if((PreviousPSXDisplay.DisplayModeNew.x+PSXDisplay.DisplayModeNew.y)>512) |
ef79bbde | 313 | { |
a96a5eb2 | 314 | int dy1=512-PreviousPSXDisplay.DisplayModeNew.x; |
315 | int dy2=(PreviousPSXDisplay.DisplayModeNew.x+PSXDisplay.DisplayModeNew.y)-512; | |
ef79bbde P |
316 | |
317 | if(dy1>=dy2) | |
318 | { | |
319 | PreviousPSXDisplay.DisplayModeNew.y=-dy2; | |
320 | } | |
321 | else | |
322 | { | |
323 | PSXDisplay.DisplayPosition.y=0; | |
324 | PreviousPSXDisplay.DisplayModeNew.y=-dy1; | |
325 | } | |
326 | } | |
327 | else PreviousPSXDisplay.DisplayModeNew.y=0; | |
328 | ||
329 | // eon | |
330 | ||
331 | if(PreviousPSXDisplay.DisplayModeNew.y!=iOldYOffset) // if old offset!=new offset: recalc height | |
332 | { | |
333 | PSXDisplay.Height = PSXDisplay.Range.y1 - | |
334 | PSXDisplay.Range.y0 + | |
335 | PreviousPSXDisplay.DisplayModeNew.y; | |
336 | PSXDisplay.DisplayModeNew.y=PSXDisplay.Height*PSXDisplay.Double; | |
337 | } | |
338 | ||
339 | // | |
340 | ||
341 | if(PSXDisplay.PAL) iT=48; else iT=28; | |
342 | ||
343 | if(PSXDisplay.Range.y0>=iT) | |
344 | { | |
345 | PreviousPSXDisplay.Range.y0= | |
346 | (short)((PSXDisplay.Range.y0-iT-4)*PSXDisplay.Double); | |
347 | if(PreviousPSXDisplay.Range.y0<0) | |
348 | PreviousPSXDisplay.Range.y0=0; | |
349 | PSXDisplay.DisplayModeNew.y+= | |
350 | PreviousPSXDisplay.Range.y0; | |
351 | } | |
352 | else | |
353 | PreviousPSXDisplay.Range.y0=0; | |
354 | ||
355 | if(iO!=PreviousPSXDisplay.Range.y0) | |
356 | { | |
357 | DoClearScreenBuffer(); | |
358 | } | |
359 | } | |
360 | ||
361 | //////////////////////////////////////////////////////////////////////// | |
362 | // check if update needed | |
363 | //////////////////////////////////////////////////////////////////////// | |
364 | ||
a96a5eb2 | 365 | static void updateDisplayIfChanged(void) // UPDATE DISPLAY IF CHANGED |
ef79bbde P |
366 | { |
367 | if ((PSXDisplay.DisplayMode.y == PSXDisplay.DisplayModeNew.y) && | |
368 | (PSXDisplay.DisplayMode.x == PSXDisplay.DisplayModeNew.x)) | |
369 | { | |
370 | if((PSXDisplay.RGB24 == PSXDisplay.RGB24New) && | |
371 | (PSXDisplay.Interlaced == PSXDisplay.InterlacedNew)) return; | |
372 | } | |
373 | ||
374 | PSXDisplay.RGB24 = PSXDisplay.RGB24New; // get new infos | |
375 | ||
376 | PSXDisplay.DisplayMode.y = PSXDisplay.DisplayModeNew.y; | |
377 | PSXDisplay.DisplayMode.x = PSXDisplay.DisplayModeNew.x; | |
378 | PreviousPSXDisplay.DisplayMode.x= // previous will hold | |
379 | min(640,PSXDisplay.DisplayMode.x); // max 640x512... that's | |
380 | PreviousPSXDisplay.DisplayMode.y= // the size of my | |
381 | min(512,PSXDisplay.DisplayMode.y); // back buffer surface | |
382 | PSXDisplay.Interlaced = PSXDisplay.InterlacedNew; | |
383 | ||
384 | PSXDisplay.DisplayEnd.x= // calc end of display | |
385 | PSXDisplay.DisplayPosition.x+ PSXDisplay.DisplayMode.x; | |
386 | PSXDisplay.DisplayEnd.y= | |
387 | PSXDisplay.DisplayPosition.y+ PSXDisplay.DisplayMode.y+PreviousPSXDisplay.DisplayModeNew.y; | |
388 | PreviousPSXDisplay.DisplayEnd.x= | |
389 | PreviousPSXDisplay.DisplayPosition.x+ PSXDisplay.DisplayMode.x; | |
390 | PreviousPSXDisplay.DisplayEnd.y= | |
391 | PreviousPSXDisplay.DisplayPosition.y+ PSXDisplay.DisplayMode.y+PreviousPSXDisplay.DisplayModeNew.y; | |
392 | ||
393 | ChangeDispOffsetsX(); | |
394 | ||
395 | if(iFrameLimit==2) SetAutoFrameCap(); // -> set it | |
396 | ||
79f58413 | 397 | if(UseFrameSkip) decideSkip(); // stupid stuff when frame skipping enabled |
ef79bbde P |
398 | } |
399 | ||
ef79bbde P |
400 | //////////////////////////////////////////////////////////////////////// |
401 | // update lace is called evry VSync | |
402 | //////////////////////////////////////////////////////////////////////// | |
403 | ||
404 | void CALLBACK GPUupdateLace(void) // VSYNC | |
405 | { | |
2588a938 | 406 | //if(!(dwActFixes&1)) |
407 | // lGPUstatusRet^=0x80000000; // odd/even bit | |
ef79bbde | 408 | |
dc40e780 | 409 | //pcsx-rearmed: removed, this is handled by core |
72228559 | 410 | //if(!(dwActFixes&32)) // std fps limitation? |
411 | // CheckFrameRate(); | |
ef79bbde P |
412 | |
413 | if(PSXDisplay.Interlaced) // interlaced mode? | |
414 | { | |
2588a938 | 415 | lGPUstatusRet^=0x80000000; // odd/even bit? |
416 | ||
ef79bbde P |
417 | if(bDoVSyncUpdate && PSXDisplay.DisplayMode.x>0 && PSXDisplay.DisplayMode.y>0) |
418 | { | |
419 | updateDisplay(); | |
420 | } | |
421 | } | |
422 | else // non-interlaced? | |
423 | { | |
424 | if(dwActFixes&64) // lazy screen update fix | |
425 | { | |
79f58413 | 426 | if(bDoLazyUpdate) |
ef79bbde P |
427 | updateDisplay(); |
428 | bDoLazyUpdate=FALSE; | |
429 | } | |
430 | else | |
431 | { | |
79f58413 | 432 | if(bDoVSyncUpdate) // some primitives drawn? |
f1bad6e1 | 433 | updateDisplay(); // -> update display |
ef79bbde P |
434 | } |
435 | } | |
f1bad6e1 | 436 | |
79f58413 | 437 | if(UseFrameSkip) { // frame over-skip guard |
438 | lace_count_since_flip++; | |
439 | if(lace_count_since_flip > 8) { | |
440 | bSkipNextFrame=FALSE; | |
441 | fskip_frameReady=TRUE; | |
442 | } | |
443 | } | |
ef79bbde P |
444 | } |
445 | ||
446 | //////////////////////////////////////////////////////////////////////// | |
447 | // process read request from GPU status register | |
448 | //////////////////////////////////////////////////////////////////////// | |
449 | ||
450 | ||
451 | uint32_t CALLBACK GPUreadStatus(void) // READ STATUS | |
452 | { | |
453 | if(dwActFixes&1) | |
454 | { | |
455 | static int iNumRead=0; // odd/even hack | |
456 | if((iNumRead++)==2) | |
457 | { | |
458 | iNumRead=0; | |
459 | lGPUstatusRet^=0x80000000; // interlaced bit toggle... we do it on every 3 read status... needed by some games (like ChronoCross) with old epsxe versions (1.5.2 and older) | |
460 | } | |
461 | } | |
462 | ||
463 | if(iFakePrimBusy) // 27.10.2007 - PETE : emulating some 'busy' while drawing... pfff | |
464 | { | |
465 | iFakePrimBusy--; | |
466 | ||
467 | if(iFakePrimBusy&1) // we do a busy-idle-busy-idle sequence after/while drawing prims | |
468 | { | |
469 | GPUIsBusy; | |
470 | GPUIsNotReadyForCommands; | |
471 | } | |
472 | else | |
473 | { | |
474 | GPUIsIdle; | |
475 | GPUIsReadyForCommands; | |
476 | } | |
477 | } | |
2588a938 | 478 | return lGPUstatusRet | vBlank; |
ef79bbde P |
479 | } |
480 | ||
481 | //////////////////////////////////////////////////////////////////////// | |
482 | // processes data send to GPU status register | |
483 | // these are always single packet commands. | |
484 | //////////////////////////////////////////////////////////////////////// | |
485 | ||
486 | void CALLBACK GPUwriteStatus(uint32_t gdata) // WRITE STATUS | |
487 | { | |
488 | uint32_t lCommand=(gdata>>24)&0xff; | |
489 | ||
490 | ulStatusControl[lCommand]=gdata; // store command for freezing | |
491 | ||
492 | switch(lCommand) | |
493 | { | |
494 | //--------------------------------------------------// | |
495 | // reset gpu | |
496 | case 0x00: | |
497 | memset(lGPUInfoVals,0x00,16*sizeof(uint32_t)); | |
498 | lGPUstatusRet=0x14802000; | |
499 | PSXDisplay.Disabled=1; | |
500 | DataWriteMode=DataReadMode=DR_NORMAL; | |
501 | PSXDisplay.DrawOffset.x=PSXDisplay.DrawOffset.y=0; | |
502 | drawX=drawY=0;drawW=drawH=0; | |
503 | sSetMask=0;lSetMask=0;bCheckMask=FALSE; | |
504 | usMirror=0; | |
505 | GlobalTextAddrX=0;GlobalTextAddrY=0; | |
506 | GlobalTextTP=0;GlobalTextABR=0; | |
507 | PSXDisplay.RGB24=FALSE; | |
508 | PSXDisplay.Interlaced=FALSE; | |
509 | bUsingTWin = FALSE; | |
510 | return; | |
511 | //--------------------------------------------------// | |
512 | // dis/enable display | |
513 | case 0x03: | |
514 | ||
515 | PreviousPSXDisplay.Disabled = PSXDisplay.Disabled; | |
516 | PSXDisplay.Disabled = (gdata & 1); | |
517 | ||
518 | if(PSXDisplay.Disabled) | |
519 | lGPUstatusRet|=GPUSTATUS_DISPLAYDISABLED; | |
520 | else lGPUstatusRet&=~GPUSTATUS_DISPLAYDISABLED; | |
521 | return; | |
522 | ||
523 | //--------------------------------------------------// | |
524 | // setting transfer mode | |
525 | case 0x04: | |
526 | gdata &= 0x03; // Only want the lower two bits | |
527 | ||
528 | DataWriteMode=DataReadMode=DR_NORMAL; | |
529 | if(gdata==0x02) DataWriteMode=DR_VRAMTRANSFER; | |
530 | if(gdata==0x03) DataReadMode =DR_VRAMTRANSFER; | |
531 | lGPUstatusRet&=~GPUSTATUS_DMABITS; // Clear the current settings of the DMA bits | |
532 | lGPUstatusRet|=(gdata << 29); // Set the DMA bits according to the received data | |
533 | ||
534 | return; | |
535 | //--------------------------------------------------// | |
536 | // setting display position | |
537 | case 0x05: | |
538 | { | |
539 | PreviousPSXDisplay.DisplayPosition.x = PSXDisplay.DisplayPosition.x; | |
540 | PreviousPSXDisplay.DisplayPosition.y = PSXDisplay.DisplayPosition.y; | |
541 | ||
ef79bbde | 542 | // new |
a96a5eb2 | 543 | PSXDisplay.DisplayPosition.y = (short)((gdata>>10)&0x1ff); |
ef79bbde P |
544 | |
545 | // store the same val in some helper var, we need it on later compares | |
546 | PreviousPSXDisplay.DisplayModeNew.x=PSXDisplay.DisplayPosition.y; | |
547 | ||
a96a5eb2 | 548 | if((PSXDisplay.DisplayPosition.y+PSXDisplay.DisplayMode.y)>512) |
ef79bbde | 549 | { |
a96a5eb2 | 550 | int dy1=512-PSXDisplay.DisplayPosition.y; |
551 | int dy2=(PSXDisplay.DisplayPosition.y+PSXDisplay.DisplayMode.y)-512; | |
ef79bbde P |
552 | |
553 | if(dy1>=dy2) | |
554 | { | |
555 | PreviousPSXDisplay.DisplayModeNew.y=-dy2; | |
556 | } | |
557 | else | |
558 | { | |
559 | PSXDisplay.DisplayPosition.y=0; | |
560 | PreviousPSXDisplay.DisplayModeNew.y=-dy1; | |
561 | } | |
562 | } | |
563 | else PreviousPSXDisplay.DisplayModeNew.y=0; | |
564 | // eon | |
565 | ||
566 | PSXDisplay.DisplayPosition.x = (short)(gdata & 0x3ff); | |
567 | PSXDisplay.DisplayEnd.x= | |
568 | PSXDisplay.DisplayPosition.x+ PSXDisplay.DisplayMode.x; | |
569 | PSXDisplay.DisplayEnd.y= | |
570 | PSXDisplay.DisplayPosition.y+ PSXDisplay.DisplayMode.y + PreviousPSXDisplay.DisplayModeNew.y; | |
571 | PreviousPSXDisplay.DisplayEnd.x= | |
572 | PreviousPSXDisplay.DisplayPosition.x+ PSXDisplay.DisplayMode.x; | |
573 | PreviousPSXDisplay.DisplayEnd.y= | |
574 | PreviousPSXDisplay.DisplayPosition.y+ PSXDisplay.DisplayMode.y + PreviousPSXDisplay.DisplayModeNew.y; | |
575 | ||
576 | bDoVSyncUpdate=TRUE; | |
577 | ||
578 | if (!(PSXDisplay.Interlaced)) // stupid frame skipping option | |
579 | { | |
ef79bbde P |
580 | if(dwActFixes&64) bDoLazyUpdate=TRUE; |
581 | } | |
4215cb1f | 582 | if(UseFrameSkip) decideSkip(); |
ef79bbde P |
583 | }return; |
584 | //--------------------------------------------------// | |
585 | // setting width | |
586 | case 0x06: | |
587 | ||
588 | PSXDisplay.Range.x0=(short)(gdata & 0x7ff); | |
589 | PSXDisplay.Range.x1=(short)((gdata>>12) & 0xfff); | |
590 | ||
591 | PSXDisplay.Range.x1-=PSXDisplay.Range.x0; | |
592 | ||
593 | ChangeDispOffsetsX(); | |
594 | ||
595 | return; | |
596 | //--------------------------------------------------// | |
597 | // setting height | |
598 | case 0x07: | |
599 | { | |
600 | ||
601 | PSXDisplay.Range.y0=(short)(gdata & 0x3ff); | |
602 | PSXDisplay.Range.y1=(short)((gdata>>10) & 0x3ff); | |
603 | ||
604 | PreviousPSXDisplay.Height = PSXDisplay.Height; | |
605 | ||
606 | PSXDisplay.Height = PSXDisplay.Range.y1 - | |
607 | PSXDisplay.Range.y0 + | |
608 | PreviousPSXDisplay.DisplayModeNew.y; | |
609 | ||
610 | if(PreviousPSXDisplay.Height!=PSXDisplay.Height) | |
611 | { | |
612 | PSXDisplay.DisplayModeNew.y=PSXDisplay.Height*PSXDisplay.Double; | |
613 | ||
614 | ChangeDispOffsetsY(); | |
615 | ||
616 | updateDisplayIfChanged(); | |
617 | } | |
618 | return; | |
619 | } | |
620 | //--------------------------------------------------// | |
621 | // setting display infos | |
622 | case 0x08: | |
623 | ||
624 | PSXDisplay.DisplayModeNew.x = | |
625 | sDispWidths[(gdata & 0x03) | ((gdata & 0x40) >> 4)]; | |
626 | ||
627 | if (gdata&0x04) PSXDisplay.Double=2; | |
628 | else PSXDisplay.Double=1; | |
629 | ||
630 | PSXDisplay.DisplayModeNew.y = PSXDisplay.Height*PSXDisplay.Double; | |
631 | ||
632 | ChangeDispOffsetsY(); | |
633 | ||
634 | PSXDisplay.PAL = (gdata & 0x08)?TRUE:FALSE; // if 1 - PAL mode, else NTSC | |
635 | PSXDisplay.RGB24New = (gdata & 0x10)?TRUE:FALSE; // if 1 - TrueColor | |
636 | PSXDisplay.InterlacedNew = (gdata & 0x20)?TRUE:FALSE; // if 1 - Interlace | |
637 | ||
638 | lGPUstatusRet&=~GPUSTATUS_WIDTHBITS; // Clear the width bits | |
639 | lGPUstatusRet|= | |
640 | (((gdata & 0x03) << 17) | | |
641 | ((gdata & 0x40) << 10)); // Set the width bits | |
642 | ||
643 | if(PSXDisplay.InterlacedNew) | |
644 | { | |
645 | if(!PSXDisplay.Interlaced) | |
646 | { | |
647 | PreviousPSXDisplay.DisplayPosition.x = PSXDisplay.DisplayPosition.x; | |
648 | PreviousPSXDisplay.DisplayPosition.y = PSXDisplay.DisplayPosition.y; | |
649 | } | |
650 | lGPUstatusRet|=GPUSTATUS_INTERLACED; | |
651 | } | |
652 | else lGPUstatusRet&=~GPUSTATUS_INTERLACED; | |
653 | ||
654 | if (PSXDisplay.PAL) | |
655 | lGPUstatusRet|=GPUSTATUS_PAL; | |
656 | else lGPUstatusRet&=~GPUSTATUS_PAL; | |
657 | ||
658 | if (PSXDisplay.Double==2) | |
659 | lGPUstatusRet|=GPUSTATUS_DOUBLEHEIGHT; | |
660 | else lGPUstatusRet&=~GPUSTATUS_DOUBLEHEIGHT; | |
661 | ||
662 | if (PSXDisplay.RGB24New) | |
663 | lGPUstatusRet|=GPUSTATUS_RGB24; | |
664 | else lGPUstatusRet&=~GPUSTATUS_RGB24; | |
665 | ||
666 | updateDisplayIfChanged(); | |
667 | ||
668 | return; | |
669 | //--------------------------------------------------// | |
670 | // ask about GPU version and other stuff | |
671 | case 0x10: | |
672 | ||
673 | gdata&=0xff; | |
674 | ||
675 | switch(gdata) | |
676 | { | |
677 | case 0x02: | |
678 | lGPUdataRet=lGPUInfoVals[INFO_TW]; // tw infos | |
679 | return; | |
680 | case 0x03: | |
681 | lGPUdataRet=lGPUInfoVals[INFO_DRAWSTART]; // draw start | |
682 | return; | |
683 | case 0x04: | |
684 | lGPUdataRet=lGPUInfoVals[INFO_DRAWEND]; // draw end | |
685 | return; | |
686 | case 0x05: | |
687 | case 0x06: | |
688 | lGPUdataRet=lGPUInfoVals[INFO_DRAWOFF]; // draw offset | |
689 | return; | |
690 | case 0x07: | |
a96a5eb2 | 691 | lGPUdataRet=0x02; // gpu type |
ef79bbde P |
692 | return; |
693 | case 0x08: | |
694 | case 0x0F: // some bios addr? | |
695 | lGPUdataRet=0xBFC03720; | |
696 | return; | |
697 | } | |
698 | return; | |
699 | //--------------------------------------------------// | |
700 | } | |
701 | } | |
702 | ||
703 | //////////////////////////////////////////////////////////////////////// | |
704 | // vram read/write helpers, needed by LEWPY's optimized vram read/write :) | |
705 | //////////////////////////////////////////////////////////////////////// | |
706 | ||
a96a5eb2 | 707 | static inline void FinishedVRAMWrite(void) |
ef79bbde | 708 | { |
ef79bbde P |
709 | // Set register to NORMAL operation |
710 | DataWriteMode = DR_NORMAL; | |
711 | // Reset transfer values, to prevent mis-transfer of data | |
712 | VRAMWrite.x = 0; | |
713 | VRAMWrite.y = 0; | |
714 | VRAMWrite.Width = 0; | |
715 | VRAMWrite.Height = 0; | |
716 | VRAMWrite.ColsRemaining = 0; | |
717 | VRAMWrite.RowsRemaining = 0; | |
718 | } | |
719 | ||
a96a5eb2 | 720 | static inline void FinishedVRAMRead(void) |
ef79bbde P |
721 | { |
722 | // Set register to NORMAL operation | |
723 | DataReadMode = DR_NORMAL; | |
724 | // Reset transfer values, to prevent mis-transfer of data | |
725 | VRAMRead.x = 0; | |
726 | VRAMRead.y = 0; | |
727 | VRAMRead.Width = 0; | |
728 | VRAMRead.Height = 0; | |
729 | VRAMRead.ColsRemaining = 0; | |
730 | VRAMRead.RowsRemaining = 0; | |
731 | ||
732 | // Indicate GPU is no longer ready for VRAM data in the STATUS REGISTER | |
733 | lGPUstatusRet&=~GPUSTATUS_READYFORVRAM; | |
734 | } | |
735 | ||
736 | //////////////////////////////////////////////////////////////////////// | |
737 | // core read from vram | |
738 | //////////////////////////////////////////////////////////////////////// | |
739 | ||
740 | void CALLBACK GPUreadDataMem(uint32_t * pMem, int iSize) | |
741 | { | |
742 | int i; | |
743 | ||
744 | if(DataReadMode!=DR_VRAMTRANSFER) return; | |
745 | ||
746 | GPUIsBusy; | |
747 | ||
748 | // adjust read ptr, if necessary | |
749 | while(VRAMRead.ImagePtr>=psxVuw_eom) | |
a96a5eb2 | 750 | VRAMRead.ImagePtr-=512*1024; |
ef79bbde | 751 | while(VRAMRead.ImagePtr<psxVuw) |
a96a5eb2 | 752 | VRAMRead.ImagePtr+=512*1024; |
ef79bbde P |
753 | |
754 | for(i=0;i<iSize;i++) | |
755 | { | |
756 | // do 2 seperate 16bit reads for compatibility (wrap issues) | |
757 | if ((VRAMRead.ColsRemaining > 0) && (VRAMRead.RowsRemaining > 0)) | |
758 | { | |
759 | // lower 16 bit | |
760 | lGPUdataRet=(uint32_t)GETLE16(VRAMRead.ImagePtr); | |
761 | ||
762 | VRAMRead.ImagePtr++; | |
a96a5eb2 | 763 | if(VRAMRead.ImagePtr>=psxVuw_eom) VRAMRead.ImagePtr-=512*1024; |
ef79bbde P |
764 | VRAMRead.RowsRemaining --; |
765 | ||
766 | if(VRAMRead.RowsRemaining<=0) | |
767 | { | |
768 | VRAMRead.RowsRemaining = VRAMRead.Width; | |
769 | VRAMRead.ColsRemaining--; | |
770 | VRAMRead.ImagePtr += 1024 - VRAMRead.Width; | |
a96a5eb2 | 771 | if(VRAMRead.ImagePtr>=psxVuw_eom) VRAMRead.ImagePtr-=512*1024; |
ef79bbde P |
772 | } |
773 | ||
774 | // higher 16 bit (always, even if it's an odd width) | |
775 | lGPUdataRet|=(uint32_t)GETLE16(VRAMRead.ImagePtr)<<16; | |
776 | PUTLE32(pMem, lGPUdataRet); pMem++; | |
777 | ||
778 | if(VRAMRead.ColsRemaining <= 0) | |
779 | {FinishedVRAMRead();goto ENDREAD;} | |
780 | ||
781 | VRAMRead.ImagePtr++; | |
a96a5eb2 | 782 | if(VRAMRead.ImagePtr>=psxVuw_eom) VRAMRead.ImagePtr-=512*1024; |
ef79bbde P |
783 | VRAMRead.RowsRemaining--; |
784 | if(VRAMRead.RowsRemaining<=0) | |
785 | { | |
786 | VRAMRead.RowsRemaining = VRAMRead.Width; | |
787 | VRAMRead.ColsRemaining--; | |
788 | VRAMRead.ImagePtr += 1024 - VRAMRead.Width; | |
a96a5eb2 | 789 | if(VRAMRead.ImagePtr>=psxVuw_eom) VRAMRead.ImagePtr-=512*1024; |
ef79bbde P |
790 | } |
791 | if(VRAMRead.ColsRemaining <= 0) | |
792 | {FinishedVRAMRead();goto ENDREAD;} | |
793 | } | |
794 | else {FinishedVRAMRead();goto ENDREAD;} | |
795 | } | |
796 | ||
797 | ENDREAD: | |
798 | GPUIsIdle; | |
799 | } | |
800 | ||
801 | ||
802 | //////////////////////////////////////////////////////////////////////// | |
803 | ||
804 | uint32_t CALLBACK GPUreadData(void) | |
805 | { | |
806 | uint32_t l; | |
807 | GPUreadDataMem(&l,1); | |
808 | return lGPUdataRet; | |
809 | } | |
810 | ||
a96a5eb2 | 811 | // Software drawing function |
812 | #include "soft.c" | |
813 | ||
814 | // PSX drawing primitives | |
815 | #include "prim.c" | |
816 | ||
ef79bbde P |
817 | //////////////////////////////////////////////////////////////////////// |
818 | // processes data send to GPU data register | |
819 | // extra table entries for fixing polyline troubles | |
820 | //////////////////////////////////////////////////////////////////////// | |
821 | ||
a96a5eb2 | 822 | static const unsigned char primTableCX[256] = |
ef79bbde P |
823 | { |
824 | // 00 | |
825 | 0,0,3,0,0,0,0,0, | |
826 | // 08 | |
827 | 0,0,0,0,0,0,0,0, | |
828 | // 10 | |
829 | 0,0,0,0,0,0,0,0, | |
830 | // 18 | |
831 | 0,0,0,0,0,0,0,0, | |
832 | // 20 | |
833 | 4,4,4,4,7,7,7,7, | |
834 | // 28 | |
835 | 5,5,5,5,9,9,9,9, | |
836 | // 30 | |
837 | 6,6,6,6,9,9,9,9, | |
838 | // 38 | |
839 | 8,8,8,8,12,12,12,12, | |
840 | // 40 | |
841 | 3,3,3,3,0,0,0,0, | |
842 | // 48 | |
843 | // 5,5,5,5,6,6,6,6, // FLINE | |
844 | 254,254,254,254,254,254,254,254, | |
845 | // 50 | |
846 | 4,4,4,4,0,0,0,0, | |
847 | // 58 | |
848 | // 7,7,7,7,9,9,9,9, // GLINE | |
849 | 255,255,255,255,255,255,255,255, | |
850 | // 60 | |
851 | 3,3,3,3,4,4,4,4, | |
852 | // 68 | |
853 | 2,2,2,2,3,3,3,3, // 3=SPRITE1??? | |
854 | // 70 | |
855 | 2,2,2,2,3,3,3,3, | |
856 | // 78 | |
857 | 2,2,2,2,3,3,3,3, | |
858 | // 80 | |
859 | 4,0,0,0,0,0,0,0, | |
860 | // 88 | |
861 | 0,0,0,0,0,0,0,0, | |
862 | // 90 | |
863 | 0,0,0,0,0,0,0,0, | |
864 | // 98 | |
865 | 0,0,0,0,0,0,0,0, | |
866 | // a0 | |
867 | 3,0,0,0,0,0,0,0, | |
868 | // a8 | |
869 | 0,0,0,0,0,0,0,0, | |
870 | // b0 | |
871 | 0,0,0,0,0,0,0,0, | |
872 | // b8 | |
873 | 0,0,0,0,0,0,0,0, | |
874 | // c0 | |
875 | 3,0,0,0,0,0,0,0, | |
876 | // c8 | |
877 | 0,0,0,0,0,0,0,0, | |
878 | // d0 | |
879 | 0,0,0,0,0,0,0,0, | |
880 | // d8 | |
881 | 0,0,0,0,0,0,0,0, | |
882 | // e0 | |
883 | 0,1,1,1,1,1,1,0, | |
884 | // e8 | |
885 | 0,0,0,0,0,0,0,0, | |
886 | // f0 | |
887 | 0,0,0,0,0,0,0,0, | |
888 | // f8 | |
889 | 0,0,0,0,0,0,0,0 | |
890 | }; | |
891 | ||
892 | void CALLBACK GPUwriteDataMem(uint32_t * pMem, int iSize) | |
893 | { | |
894 | unsigned char command; | |
895 | uint32_t gdata=0; | |
896 | int i=0; | |
897 | GPUIsBusy; | |
898 | GPUIsNotReadyForCommands; | |
899 | ||
900 | STARTVRAM: | |
901 | ||
902 | if(DataWriteMode==DR_VRAMTRANSFER) | |
903 | { | |
904 | BOOL bFinished=FALSE; | |
905 | ||
906 | // make sure we are in vram | |
907 | while(VRAMWrite.ImagePtr>=psxVuw_eom) | |
a96a5eb2 | 908 | VRAMWrite.ImagePtr-=512*1024; |
ef79bbde | 909 | while(VRAMWrite.ImagePtr<psxVuw) |
a96a5eb2 | 910 | VRAMWrite.ImagePtr+=512*1024; |
ef79bbde P |
911 | |
912 | // now do the loop | |
913 | while(VRAMWrite.ColsRemaining>0) | |
914 | { | |
915 | while(VRAMWrite.RowsRemaining>0) | |
916 | { | |
917 | if(i>=iSize) {goto ENDVRAM;} | |
918 | i++; | |
919 | ||
920 | gdata=GETLE32(pMem); pMem++; | |
921 | ||
922 | PUTLE16(VRAMWrite.ImagePtr, (unsigned short)gdata); VRAMWrite.ImagePtr++; | |
a96a5eb2 | 923 | if(VRAMWrite.ImagePtr>=psxVuw_eom) VRAMWrite.ImagePtr-=512*1024; |
ef79bbde P |
924 | VRAMWrite.RowsRemaining --; |
925 | ||
926 | if(VRAMWrite.RowsRemaining <= 0) | |
927 | { | |
928 | VRAMWrite.ColsRemaining--; | |
929 | if (VRAMWrite.ColsRemaining <= 0) // last pixel is odd width | |
930 | { | |
931 | gdata=(gdata&0xFFFF)|(((uint32_t)GETLE16(VRAMWrite.ImagePtr))<<16); | |
932 | FinishedVRAMWrite(); | |
933 | bDoVSyncUpdate=TRUE; | |
934 | goto ENDVRAM; | |
935 | } | |
936 | VRAMWrite.RowsRemaining = VRAMWrite.Width; | |
937 | VRAMWrite.ImagePtr += 1024 - VRAMWrite.Width; | |
938 | } | |
939 | ||
940 | PUTLE16(VRAMWrite.ImagePtr, (unsigned short)(gdata>>16)); VRAMWrite.ImagePtr++; | |
a96a5eb2 | 941 | if(VRAMWrite.ImagePtr>=psxVuw_eom) VRAMWrite.ImagePtr-=512*1024; |
ef79bbde P |
942 | VRAMWrite.RowsRemaining --; |
943 | } | |
944 | ||
945 | VRAMWrite.RowsRemaining = VRAMWrite.Width; | |
946 | VRAMWrite.ColsRemaining--; | |
947 | VRAMWrite.ImagePtr += 1024 - VRAMWrite.Width; | |
948 | bFinished=TRUE; | |
949 | } | |
950 | ||
951 | FinishedVRAMWrite(); | |
952 | if(bFinished) bDoVSyncUpdate=TRUE; | |
953 | } | |
954 | ||
955 | ENDVRAM: | |
956 | ||
957 | if(DataWriteMode==DR_NORMAL) | |
958 | { | |
959 | void (* *primFunc)(unsigned char *); | |
960 | if(bSkipNextFrame) primFunc=primTableSkip; | |
961 | else primFunc=primTableJ; | |
962 | ||
963 | for(;i<iSize;) | |
964 | { | |
965 | if(DataWriteMode==DR_VRAMTRANSFER) goto STARTVRAM; | |
966 | ||
967 | gdata=GETLE32(pMem); pMem++; i++; | |
968 | ||
969 | if(gpuDataC == 0) | |
970 | { | |
971 | command = (unsigned char)((gdata>>24) & 0xff); | |
972 | ||
973 | //if(command>=0xb0 && command<0xc0) auxprintf("b0 %x!!!!!!!!!\n",command); | |
974 | ||
975 | if(primTableCX[command]) | |
976 | { | |
977 | gpuDataC = primTableCX[command]; | |
978 | gpuCommand = command; | |
0d16cda2 | 979 | PUTLE32_(&gpuDataM[0], gdata); |
ef79bbde P |
980 | gpuDataP = 1; |
981 | } | |
982 | else continue; | |
983 | } | |
984 | else | |
985 | { | |
0d16cda2 | 986 | PUTLE32_(&gpuDataM[gpuDataP], gdata); |
ef79bbde P |
987 | if(gpuDataC>128) |
988 | { | |
989 | if((gpuDataC==254 && gpuDataP>=3) || | |
990 | (gpuDataC==255 && gpuDataP>=4 && !(gpuDataP&1))) | |
991 | { | |
992 | if((gpuDataM[gpuDataP] & 0xF000F000) == 0x50005000) | |
993 | gpuDataP=gpuDataC-1; | |
994 | } | |
995 | } | |
996 | gpuDataP++; | |
997 | } | |
998 | ||
999 | if(gpuDataP == gpuDataC) | |
1000 | { | |
1001 | gpuDataC=gpuDataP=0; | |
1002 | primFunc[gpuCommand]((unsigned char *)gpuDataM); | |
a96a5eb2 | 1003 | if(dwActFixes&0x0400) // hack for emulating "gpu busy" in some games |
1004 | iFakePrimBusy=4; | |
1005 | } | |
ef79bbde P |
1006 | } |
1007 | } | |
1008 | ||
1009 | lGPUdataRet=gdata; | |
1010 | ||
1011 | GPUIsReadyForCommands; | |
1012 | GPUIsIdle; | |
1013 | } | |
1014 | ||
1015 | //////////////////////////////////////////////////////////////////////// | |
1016 | ||
1017 | void CALLBACK GPUwriteData(uint32_t gdata) | |
1018 | { | |
0d16cda2 | 1019 | PUTLE32_(&gdata, gdata); |
ef79bbde P |
1020 | GPUwriteDataMem(&gdata,1); |
1021 | } | |
1022 | ||
ef79bbde P |
1023 | //////////////////////////////////////////////////////////////////////// |
1024 | // process gpu commands | |
1025 | //////////////////////////////////////////////////////////////////////// | |
1026 | ||
1027 | unsigned long lUsedAddr[3]; | |
1028 | ||
a96a5eb2 | 1029 | static inline BOOL CheckForEndlessLoop(unsigned long laddr) |
ef79bbde P |
1030 | { |
1031 | if(laddr==lUsedAddr[1]) return TRUE; | |
1032 | if(laddr==lUsedAddr[2]) return TRUE; | |
1033 | ||
1034 | if(laddr<lUsedAddr[0]) lUsedAddr[1]=laddr; | |
1035 | else lUsedAddr[2]=laddr; | |
1036 | lUsedAddr[0]=laddr; | |
1037 | return FALSE; | |
1038 | } | |
1039 | ||
1040 | long CALLBACK GPUdmaChain(uint32_t * baseAddrL, uint32_t addr) | |
1041 | { | |
1042 | uint32_t dmaMem; | |
1043 | unsigned char * baseAddrB; | |
1044 | short count;unsigned int DMACommandCounter = 0; | |
1045 | ||
1046 | GPUIsBusy; | |
1047 | ||
1048 | lUsedAddr[0]=lUsedAddr[1]=lUsedAddr[2]=0xffffff; | |
1049 | ||
1050 | baseAddrB = (unsigned char*) baseAddrL; | |
1051 | ||
1052 | do | |
1053 | { | |
a96a5eb2 | 1054 | addr&=0x1FFFFC; |
ef79bbde P |
1055 | if(DMACommandCounter++ > 2000000) break; |
1056 | if(CheckForEndlessLoop(addr)) break; | |
1057 | ||
1058 | count = baseAddrB[addr+3]; | |
1059 | ||
1060 | dmaMem=addr+4; | |
1061 | ||
1062 | if(count>0) GPUwriteDataMem(&baseAddrL[dmaMem>>2],count); | |
1063 | ||
1064 | addr = GETLE32(&baseAddrL[addr>>2])&0xffffff; | |
1065 | } | |
1066 | while (addr != 0xffffff); | |
1067 | ||
1068 | GPUIsIdle; | |
1069 | ||
1070 | return 0; | |
1071 | } | |
1072 | ||
ef79bbde P |
1073 | //////////////////////////////////////////////////////////////////////// |
1074 | // Freeze | |
1075 | //////////////////////////////////////////////////////////////////////// | |
1076 | ||
1077 | typedef struct GPUFREEZETAG | |
1078 | { | |
1079 | uint32_t ulFreezeVersion; // should be always 1 for now (set by main emu) | |
1080 | uint32_t ulStatus; // current gpu status | |
1081 | uint32_t ulControl[256]; // latest control register values | |
1082 | unsigned char psxVRam[1024*1024*2]; // current VRam image (full 2 MB for ZN) | |
1083 | } GPUFreeze_t; | |
1084 | ||
1085 | //////////////////////////////////////////////////////////////////////// | |
1086 | ||
1087 | long CALLBACK GPUfreeze(uint32_t ulGetFreezeData,GPUFreeze_t * pF) | |
1088 | { | |
1089 | //----------------------------------------------------// | |
1090 | if(ulGetFreezeData==2) // 2: info, which save slot is selected? (just for display) | |
1091 | { | |
1092 | long lSlotNum=*((long *)pF); | |
1093 | if(lSlotNum<0) return 0; | |
1094 | if(lSlotNum>8) return 0; | |
1095 | lSelectedSlot=lSlotNum+1; | |
ef79bbde P |
1096 | return 1; |
1097 | } | |
1098 | //----------------------------------------------------// | |
1099 | if(!pF) return 0; // some checks | |
1100 | if(pF->ulFreezeVersion!=1) return 0; | |
1101 | ||
1102 | if(ulGetFreezeData==1) // 1: get data | |
1103 | { | |
1104 | pF->ulStatus=lGPUstatusRet; | |
1105 | memcpy(pF->ulControl,ulStatusControl,256*sizeof(uint32_t)); | |
a96a5eb2 | 1106 | memcpy(pF->psxVRam, psxVub, 1024*512*2); |
ef79bbde P |
1107 | |
1108 | return 1; | |
1109 | } | |
1110 | ||
1111 | if(ulGetFreezeData!=0) return 0; // 0: set data | |
1112 | ||
1113 | lGPUstatusRet=pF->ulStatus; | |
1114 | memcpy(ulStatusControl,pF->ulControl,256*sizeof(uint32_t)); | |
a96a5eb2 | 1115 | memcpy(psxVub, pF->psxVRam, 1024*512*2); |
ef79bbde P |
1116 | |
1117 | // RESET TEXTURE STORE HERE, IF YOU USE SOMETHING LIKE THAT | |
1118 | ||
1119 | GPUwriteStatus(ulStatusControl[0]); | |
1120 | GPUwriteStatus(ulStatusControl[1]); | |
1121 | GPUwriteStatus(ulStatusControl[2]); | |
1122 | GPUwriteStatus(ulStatusControl[3]); | |
1123 | GPUwriteStatus(ulStatusControl[8]); // try to repair things | |
1124 | GPUwriteStatus(ulStatusControl[6]); | |
1125 | GPUwriteStatus(ulStatusControl[7]); | |
1126 | GPUwriteStatus(ulStatusControl[5]); | |
1127 | GPUwriteStatus(ulStatusControl[4]); | |
1128 | ||
1129 | return 1; | |
1130 | } | |
2588a938 | 1131 | |
1132 | void CALLBACK GPUvBlank(int val) | |
1133 | { | |
1134 | vBlank=val?0x80000000:0; | |
1135 | } | |
1136 | ||
e64dc4c5 | 1137 | // rearmed thing |
1138 | #include "../../frontend/plugin_lib.h" | |
1139 | ||
1140 | void GPUrearmedCallbacks(const struct rearmed_cbs *cbs) | |
1141 | { | |
1142 | // sync config | |
1143 | UseFrameSkip = cbs->frameskip; | |
1144 | iUseDither = cbs->gpu_peops.iUseDither; | |
1145 | dwActFixes = cbs->gpu_peops.dwActFixes; | |
1146 | fFrameRateHz = cbs->gpu_peops.fFrameRateHz; | |
1147 | dwFrameRateTicks = cbs->gpu_peops.dwFrameRateTicks; | |
1148 | ||
1149 | skip_advice = &cbs->fskip_advice; | |
1150 | fps_skip = 100.0f; | |
1151 | } |