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