5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
6 // Cleanups/fixes/rewrites by James L. Hammons
15 //#define OP_DEBUG_BMP
17 #define BLEND_Y(dst, src) op_blend_y[(((uint16)dst<<8)) | ((uint16)(src))]
18 #define BLEND_CR(dst, src) op_blend_cr[(((uint16)dst)<<8) | ((uint16)(src))]
20 #define OBJECT_TYPE_BITMAP 0 // 000
21 #define OBJECT_TYPE_SCALE 1 // 001
22 #define OBJECT_TYPE_GPU 2 // 010
23 #define OBJECT_TYPE_BRANCH 3 // 011
24 #define OBJECT_TYPE_STOP 4 // 100
26 #define CONDITION_EQUAL 0
27 #define CONDITION_LESS_THAN 1
28 #define CONDITION_GREATER_THAN 2
29 #define CONDITION_OP_FLAG_SET 3
30 #define CONDITION_SECOND_HALF_LINE 4
32 #define OPFLAG_RELEASE 8 // Bus release bit
33 #define OPFLAG_TRANS 4 // Transparency bit
34 #define OPFLAG_RMW 2 // Read-Modify-Write bit
35 #define OPFLAG_REFLECT 1 // Horizontal mirror bit
37 // Private function prototypes
39 void OPProcessFixedBitmap(int scanline, uint64 p0, uint64 p1, bool render);
40 void OPProcessScaledBitmap(int scanline, uint64 p0, uint64 p1, uint64 p2, bool render);
41 void DumpScaledObject(uint64 p0, uint64 p1, uint64 p2);
42 void DumpFixedObject(uint64 p0, uint64 p1);
43 uint64 op_load_phrase(uint32 offset);
45 // External global variables
47 extern uint32 jaguar_mainRom_crc32;
49 // Local global variables
51 static uint8 * op_blend_y;
52 static uint8 * op_blend_cr;
53 // There may be a problem with this "RAM" overlapping (and thus being independent of)
54 // some of the regular TOM RAM...
55 static uint8 objectp_ram[0x40]; // This is based at $F00000
56 uint8 objectp_running;
57 bool objectp_stop_reading_list;
59 static uint8 op_bitmap_bit_depth[8] = { 1, 2, 4, 8, 16, 24, 32, 0 };
60 //static uint32 op_bitmap_bit_size[8] =
61 // { (uint32)(0.125*65536), (uint32)(0.25*65536), (uint32)(0.5*65536), (uint32)(1*65536),
62 // (uint32)(2*65536), (uint32)(1*65536), (uint32)(1*65536), (uint32)(1*65536) };
63 static uint32 op_pointer;
65 int32 phraseWidthToPixels[8] = { 64, 32, 16, 8, 4, 2, 0, 0 };
69 // Object Processor initialization
73 // Blend tables (64K each)
74 memory_malloc_secure((void **)&op_blend_y, 0x10000, "Jaguar Object processor Y blend lookup table");
75 memory_malloc_secure((void **)&op_blend_cr, 0x10000, "Jaguar Object processor CR blend lookup table");
77 // Here we calculate the saturating blend of a signed 4-bit value and an
78 // existing Cyan/Red value as well as a signed 8-bit value and an existing intensity...
79 // Note: CRY is 4 bits Cyan, 4 bits Red, 16 bits intensitY
80 for(int i=0; i<256*256; i++)
82 int y = (i >> 8) & 0xFF;
83 int dy = (INT8)i; // Sign extend the Y index
84 int c1 = (i >> 8) & 0x0F;
85 int dc1 = (INT8)(i << 4) >> 4; // Sign extend the R index
86 int c2 = (i >> 12) & 0x0F;
87 int dc2 = (INT8)(i & 0xF0) >> 4; // Sign extend the C index
107 op_blend_cr[i] = (c2 << 4) | c1;
114 // Object Processor reset
118 memset(objectp_ram, 0x00, 0x40);
125 { "(BITMAP)", "(SCALED BITMAP)", "(GPU INT)", "(BRANCH)", "(STOP)", "???", "???", "???" };
127 { "\"==\"", "\"<\"", "\">\"", "(opflag set)", "(second half line)", "?", "?", "?" };
129 uint32 olp = op_get_list_pointer();
130 WriteLog("OP: OLP = %08X\n", olp);
131 WriteLog("OP: Phrase dump\n ----------\n");
132 for(uint32 i=0; i<0x100; i+=8)
134 uint32 hi = JaguarReadLong(olp + i, OP), lo = JaguarReadLong(olp + i + 4, OP);
135 WriteLog("\t%08X: %08X %08X %s", olp + i, hi, lo, opType[lo & 0x07]);
136 if ((lo & 0x07) == 3)
138 uint16 ypos = (lo >> 3) & 0x7FF;
139 uint8 cc = (lo >> 14) & 0x03;
140 uint32 link = ((hi << 11) | (lo >> 21)) & 0x3FFFF8;
141 WriteLog(" YPOS=%u, CC=%s, link=%08X", ypos, ccType[cc], link);
144 if ((lo & 0x07) == 0)
145 DumpFixedObject(op_load_phrase(olp+i), op_load_phrase(olp+i+8));
146 if ((lo & 0x07) == 1)
147 DumpScaledObject(op_load_phrase(olp+i), op_load_phrase(olp+i+8), op_load_phrase(olp+i+16));
153 // Object Processor memory access
154 // Memory range: F00010 - F00027
156 uint8 OPReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
159 return objectp_ram[offset];
162 uint16 OPReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
165 return GET16(objectp_ram, offset);
168 // F00010-F00017 R xxxxxxxx xxxxxxxx OB - current object code from the graphics processor
169 // F00020-F00023 W xxxxxxxx xxxxxxxx OLP - start of the object list
170 // F00026 W -------- -------x OBF - object processor flag
172 void OPWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
175 objectp_ram[offset] = data;
178 void OPWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
181 SET16(objectp_ram, offset, data);
183 /*if (offset == 0x20)
184 WriteLog("OP: Setting lo list pointer: %04X\n", data);
186 WriteLog("OP: Setting hi list pointer: %04X\n", data);//*/
189 uint32 op_get_list_pointer(void)
191 // Note: This register is LO / HI WORD, hence the funky look of this...
192 // return (objectp_ram[0x22] << 24) | (objectp_ram[0x23] << 16) | (objectp_ram[0x20] << 8) | objectp_ram[0x21];
193 return GET16(objectp_ram, 0x20) | (GET16(objectp_ram, 0x22) << 16);
196 // This is WRONG, since the OBF is only 16 bits wide!!! [FIXED]
198 uint32 op_get_status_register(void)
200 // return (objectp_ram[0x26] << 24) | (objectp_ram[0x27] << 16) | (objectp_ram[0x28] << 8) | objectp_ram[0x29];
201 // return GET32(objectp_ram, 0x26);
202 return GET16(objectp_ram, 0x26);
205 // This is WRONG, since the OBF is only 16 bits wide!!! [FIXED]
207 void op_set_status_register(uint32 data)
209 /* objectp_ram[0x26] = (data & 0xFF000000) >> 24;
210 objectp_ram[0x27] = (data & 0x00FF0000) >> 16;
211 objectp_ram[0x28] = (data & 0x0000FF00) >> 8;
212 objectp_ram[0x29] |= (data & 0xFE);*/
213 objectp_ram[0x26] = (data & 0x0000FF00) >> 8;
214 objectp_ram[0x27] |= (data & 0xFE);
217 void op_set_current_object(uint64 object)
219 //Not sure this is right... Wouldn't it just be stored 64 bit BE?
220 // Stored as least significant 32 bits first, ms32 last in big endian
221 /* objectp_ram[0x13] = object & 0xFF; object >>= 8;
222 objectp_ram[0x12] = object & 0xFF; object >>= 8;
223 objectp_ram[0x11] = object & 0xFF; object >>= 8;
224 objectp_ram[0x10] = object & 0xFF; object >>= 8;
226 objectp_ram[0x17] = object & 0xFF; object >>= 8;
227 objectp_ram[0x16] = object & 0xFF; object >>= 8;
228 objectp_ram[0x15] = object & 0xFF; object >>= 8;
229 objectp_ram[0x14] = object & 0xFF;*/
230 // Let's try regular good old big endian...
231 objectp_ram[0x17] = object & 0xFF; object >>= 8;
232 objectp_ram[0x16] = object & 0xFF; object >>= 8;
233 objectp_ram[0x15] = object & 0xFF; object >>= 8;
234 objectp_ram[0x14] = object & 0xFF; object >>= 8;
236 objectp_ram[0x13] = object & 0xFF; object >>= 8;
237 objectp_ram[0x12] = object & 0xFF; object >>= 8;
238 objectp_ram[0x11] = object & 0xFF; object >>= 8;
239 objectp_ram[0x10] = object & 0xFF;
242 uint64 op_load_phrase(uint32 offset)
244 offset &= ~0x07; // 8 byte alignment
245 return ((uint64)JaguarReadLong(offset, OP) << 32) | (uint64)JaguarReadLong(offset+4, OP);
248 void OPStorePhrase(uint32 offset, uint64 p)
250 offset &= ~0x07; // 8 byte alignment
251 JaguarWriteLong(offset, p >> 32, OP);
252 JaguarWriteLong(offset + 4, p & 0xFFFFFFFF, OP);
256 // Debugging routines
258 void DumpScaledObject(uint64 p0, uint64 p1, uint64 p2)
260 WriteLog(" (SCALED BITMAP)");
261 WriteLog(" %08X --> phrase %08X %08X\n", op_pointer, (uint32)(p1>>32), (uint32)(p1&0xFFFFFFFF));
262 WriteLog(" %08X --> phrase %08X %08X ", op_pointer+8, (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
263 uint8 bitdepth = (p1 >> 12) & 0x07;
264 int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
265 int32 xpos = p1 & 0xFFF;
266 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
267 uint32 iwidth = ((p1 >> 28) & 0x3FF);
268 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
269 uint16 height = ((p0 >> 14) & 0x3FF);
270 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
271 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
272 uint32 firstPix = (p1 >> 49) & 0x3F;
273 uint8 flags = (p1 >> 45) & 0x0F;
274 uint8 idx = (p1 >> 38) & 0x7F;
275 uint32 pitch = (p1 >> 15) & 0x07;
276 WriteLog("\n [%u (%u) x %u @ (%i, %u) (%u bpp), l: %08X, p: %08X fp: %02X, fl:%s%s%s%s, idx:%02X, pt:%02X]\n",
277 iwidth, dwidth, height, xpos, ypos, op_bitmap_bit_depth[bitdepth], link, ptr, firstPix, (flags&OPFLAG_REFLECT ? "REFLECT " : ""), (flags&OPFLAG_RMW ? "RMW " : ""), (flags&OPFLAG_TRANS ? "TRANS " : ""), (flags&OPFLAG_RELEASE ? "RELEASE" : ""), idx, pitch);
278 uint32 hscale = p2 & 0xFF;
279 uint32 vscale = (p2 >> 8) & 0xFF;
280 uint32 remainder = (p2 >> 16) & 0xFF;
281 WriteLog(" [hsc: %02X, vsc: %02X, rem: %02X]\n", hscale, vscale, remainder);
284 void DumpFixedObject(uint64 p0, uint64 p1)
286 WriteLog(" (BITMAP)");
287 WriteLog(" %08X --> phrase %08X %08X\n", op_pointer, (uint32)(p1>>32), (uint32)(p1&0xFFFFFFFF));
288 uint8 bitdepth = (p1 >> 12) & 0x07;
289 int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
290 int32 xpos = p1 & 0xFFF;
291 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
292 uint32 iwidth = ((p1 >> 28) & 0x3FF);
293 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
294 uint16 height = ((p0 >> 14) & 0x3FF);
295 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
296 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
297 uint32 firstPix = (p1 >> 49) & 0x3F;
298 uint8 flags = (p1 >> 45) & 0x0F;
299 uint8 idx = (p1 >> 38) & 0x7F;
300 uint32 pitch = (p1 >> 15) & 0x07;
301 WriteLog(" [%u (%u) x %u @ (%i, %u) (%u bpp), l: %08X, p: %08X fp: %02X, fl:%s%s%s%s, idx:%02X, pt:%02X]\n",
302 iwidth, dwidth, height, xpos, ypos, op_bitmap_bit_depth[bitdepth], link, ptr, firstPix, (flags&OPFLAG_REFLECT ? "REFLECT " : ""), (flags&OPFLAG_RMW ? "RMW " : ""), (flags&OPFLAG_TRANS ? "TRANS " : ""), (flags&OPFLAG_RELEASE ? "RELEASE" : ""), idx, pitch);
306 // Object Processor main routine
308 void OPProcessList(int scanline, bool render)
310 extern int op_start_log;
311 // char * condition_to_str[8] =
312 // { "==", "<", ">", "(opflag set)", "(second half line)", "?", "?", "?" };
314 op_pointer = op_get_list_pointer();
316 objectp_stop_reading_list = false;
318 // *** BEGIN OP PROCESSOR TESTING ONLY ***
319 extern bool interactiveMode;
321 extern int objectPtr;
323 int bitmapCounter = 0;
324 // *** END OP PROCESSOR TESTING ONLY ***
326 // if (op_pointer) WriteLog(" new op list at 0x%.8x scanline %i\n",op_pointer,scanline);
329 // *** BEGIN OP PROCESSOR TESTING ONLY ***
330 if (interactiveMode && bitmapCounter == objectPtr)
334 // *** END OP PROCESSOR TESTING ONLY ***
335 if (objectp_stop_reading_list)
338 uint64 p0 = op_load_phrase(op_pointer);
340 if (scanline == tom_get_vdb() && op_start_log)
341 //if (scanline == 215 && op_start_log)
343 WriteLog("%08X --> phrase %08X %08X", op_pointer - 8, (int)(p0>>32), (int)(p0&0xFFFFFFFF));
344 if ((p0 & 0x07) == OBJECT_TYPE_BITMAP)
346 WriteLog(" (BITMAP) ");
347 uint64 p1 = op_load_phrase(op_pointer);
348 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer, (int)(p1>>32), (int)(p1&0xFFFFFFFF));
349 uint8 bitdepth = (p1 >> 12) & 0x07;
350 int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
351 int32 xpos = p1 & 0xFFF;
352 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
353 uint32 iwidth = ((p1 >> 28) & 0x3FF);
354 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
355 uint16 height = ((p0 >> 14) & 0x3FF);
356 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
357 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
358 uint32 firstPix = (p1 >> 49) & 0x3F;
359 uint8 flags = (p1 >> 45) & 0x0F;
360 uint8 idx = (p1 >> 38) & 0x7F;
361 uint32 pitch = (p1 >> 15) & 0x07;
362 WriteLog("\n [%u (%u) x %u @ (%i, %u) (%u bpp), l: %08X, p: %08X fp: %02X, fl:%s%s%s%s, idx:%02X, pt:%02X]\n",
363 iwidth, dwidth, height, xpos, ypos, op_bitmap_bit_depth[bitdepth], link, ptr, firstPix, (flags&OPFLAG_REFLECT ? "REFLECT " : ""), (flags&OPFLAG_RMW ? "RMW " : ""), (flags&OPFLAG_TRANS ? "TRANS " : ""), (flags&OPFLAG_RELEASE ? "RELEASE" : ""), idx, pitch);
365 if ((p0 & 0x07) == OBJECT_TYPE_SCALE)
367 WriteLog(" (SCALED BITMAP)");
368 uint64 p1 = op_load_phrase(op_pointer), p2 = op_load_phrase(op_pointer+8);
369 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer, (int)(p1>>32), (int)(p1&0xFFFFFFFF));
370 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer+8, (int)(p2>>32), (int)(p2&0xFFFFFFFF));
371 uint8 bitdepth = (p1 >> 12) & 0x07;
372 int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
373 int32 xpos = p1 & 0xFFF;
374 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
375 uint32 iwidth = ((p1 >> 28) & 0x3FF);
376 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
377 uint16 height = ((p0 >> 14) & 0x3FF);
378 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
379 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
380 uint32 firstPix = (p1 >> 49) & 0x3F;
381 uint8 flags = (p1 >> 45) & 0x0F;
382 uint8 idx = (p1 >> 38) & 0x7F;
383 uint32 pitch = (p1 >> 15) & 0x07;
384 WriteLog("\n [%u (%u) x %u @ (%i, %u) (%u bpp), l: %08X, p: %08X fp: %02X, fl:%s%s%s%s, idx:%02X, pt:%02X]\n",
385 iwidth, dwidth, height, xpos, ypos, op_bitmap_bit_depth[bitdepth], link, ptr, firstPix, (flags&OPFLAG_REFLECT ? "REFLECT " : ""), (flags&OPFLAG_RMW ? "RMW " : ""), (flags&OPFLAG_TRANS ? "TRANS " : ""), (flags&OPFLAG_RELEASE ? "RELEASE" : ""), idx, pitch);
386 uint32 hscale = p2 & 0xFF;
387 uint32 vscale = (p2 >> 8) & 0xFF;
388 uint32 remainder = (p2 >> 16) & 0xFF;
389 WriteLog(" [hsc: %02X, vsc: %02X, rem: %02X]\n", hscale, vscale, remainder);
391 if ((p0 & 0x07) == OBJECT_TYPE_GPU)
392 WriteLog(" (GPU)\n");
393 if ((p0 & 0x07) == OBJECT_TYPE_BRANCH)
395 WriteLog(" (BRANCH)\n");
396 uint8 * jaguar_mainRam = GetRamPtr();
397 WriteLog("[RAM] --> ");
398 for(int k=0; k<8; k++)
399 WriteLog("%02X ", jaguar_mainRam[op_pointer-8 + k]);
402 if ((p0 & 0x07) == OBJECT_TYPE_STOP)
403 WriteLog(" --> List end\n");
406 // WriteLog("%08X type %i\n", op_pointer, (uint8)p0 & 0x07);
407 switch ((uint8)p0 & 0x07)
409 case OBJECT_TYPE_BITMAP:
411 // Would *not* be /2 if interlaced...!
412 uint16 ypos = ((p0 >> 3) & 0x3FF) / 2;
413 // This is only theory implied by Rayman...!
414 // It seems that if the YPOS is zero, then bump the YPOS value so that it coincides with
415 // the VDB value. With interlacing, this would be slightly more tricky.
416 // There's probably another bit somewhere that enables this mode--but so far, doesn't seem
417 // to affect any other game in a negative way (that I've seen).
418 // Either that, or it's an undocumented bug...
420 //No, the reason this was needed is that the OP code before was wrong. Any value
421 //less than VDB will get written to the top line of the display!
423 // ypos = TOMReadWord(0xF00046, OP) / 2; // Get the VDB value
424 uint32 height = (p0 & 0xFFC000) >> 14;
425 uint32 oldOPP = op_pointer - 8;
426 // *** BEGIN OP PROCESSOR TESTING ONLY ***
427 if (inhibit && op_start_log)
428 WriteLog("!!! ^^^ This object is INHIBITED! ^^^ !!!\n");
430 if (!inhibit) // For OP testing only!
431 // *** END OP PROCESSOR TESTING ONLY ***
432 if (scanline >= ypos && height > 0)
434 uint64 p1 = op_load_phrase(op_pointer);
436 //WriteLog("OP: Writing scanline %d with ypos == %d...\n", scanline, ypos);
437 //WriteLog("--> Writing %u BPP bitmap...\n", op_bitmap_bit_depth[(p1 >> 12) & 0x07]);
438 OPProcessFixedBitmap(scanline, p0, p1, render);
442 //???Does this really happen??? Doesn't seem to work if you do this...!
443 // uint32 link = (p0 & 0x7FFFF000000) >> 21;
444 // SET16(objectp_ram, 0x20, link & 0xFFFF); // OLP
445 // SET16(objectp_ram, 0x22, link >> 16);
446 /* uint32 height = (p0 & 0xFFC000) >> 14;
449 // NOTE: Would subtract 2 if in interlaced mode...!
450 // uint64 height = ((p0 & 0xFFC000) - 0x4000) & 0xFFC000;
454 uint64 data = (p0 & 0xFFFFF80000000000) >> 40;
455 uint64 dwidth = (p1 & 0xFFC0000) >> 15;
458 p0 &= ~0xFFFFF80000FFC000; // Mask out old data...
459 p0 |= (uint64)height << 14;
461 OPStorePhrase(oldOPP, p0);
463 op_pointer = (p0 & 0x000007FFFF000000) >> 21;
466 case OBJECT_TYPE_SCALE:
468 // Would *not* be /2 if interlaced...!
469 uint16 ypos = ((p0 >> 3) & 0x3FF) / 2;
470 // This is only theory implied by Rayman...!
471 // It seems that if the YPOS is zero, then bump the YPOS value so that it coincides with
472 // the VDB value. With interlacing, this would be slightly more tricky.
473 // There's probably another bit somewhere that enables this mode--but so far, doesn't seem
474 // to affect any other game in a negative way (that I've seen).
475 // Either that, or it's an undocumented bug...
477 //No, the reason this was needed is that the OP code before was wrong. Any value
478 //less than VDB will get written to the top line of the display!
480 // ypos = TOMReadWord(0xF00046, OP) / 2; // Get the VDB value
481 uint32 height = (p0 & 0xFFC000) >> 14;
482 uint32 oldOPP = op_pointer - 8;
483 // *** BEGIN OP PROCESSOR TESTING ONLY ***
484 if (inhibit && op_start_log)
486 WriteLog("!!! ^^^ This object is INHIBITED! ^^^ !!! (scanline=%u, ypos=%u, height=%u)\n", scanline, ypos, height);
487 DumpScaledObject(p0, op_load_phrase(op_pointer), op_load_phrase(op_pointer+8));
490 if (!inhibit) // For OP testing only!
491 // *** END OP PROCESSOR TESTING ONLY ***
492 if (scanline >= ypos && height > 0)
494 uint64 p1 = op_load_phrase(op_pointer);
496 uint64 p2 = op_load_phrase(op_pointer);
498 //WriteLog("OP: %08X (%d) %08X%08X %08X%08X %08X%08X\n", oldOPP, scanline, (uint32)(p0>>32), (uint32)(p0&0xFFFFFFFF), (uint32)(p1>>32), (uint32)(p1&0xFFFFFFFF), (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
499 OPProcessScaledBitmap(scanline, p0, p1, p2, render);
503 //???Does this really happen??? Doesn't seem to work if you do this...!
504 // uint32 link = (p0 & 0x7FFFF000000) >> 21;
505 // SET16(objectp_ram, 0x20, link & 0xFFFF); // OLP
506 // SET16(objectp_ram, 0x22, link >> 16);
507 /* uint32 height = (p0 & 0xFFC000) >> 14;
510 // NOTE: Would subtract 2 if in interlaced mode...!
511 // uint64 height = ((p0 & 0xFFC000) - 0x4000) & 0xFFC000;
513 uint8 remainder = p2 >> 16, vscale = p2 >> 8;
514 //Actually, we should skip this object if it has a vscale of zero.
515 //Or do we? Not sure... Atari Karts has a few lines that look like:
517 //000E8268 --> phrase 00010000 7000B00D
518 // [7 (0) x 1 @ (13, 0) (8 bpp), l: 000E82A0, p: 000E0FC0 fp: 00, fl:RELEASE, idx:00, pt:01]
519 // [hsc: 9A, vsc: 00, rem: 00]
520 // Could it be the vscale is overridden if the DWIDTH is zero? Hmm...
523 vscale = 0x20; // OP bug??? Nope, it isn't...! Or is it?
525 remainder -= 0x20; // 1.0f in [3.5] fixed point format
526 if (remainder & 0x80) // I.e., it's negative
528 uint64 data = (p0 & 0xFFFFF80000000000) >> 40;
529 uint64 dwidth = (p1 & 0xFFC0000) >> 15;
531 while (remainder & 0x80)
539 p0 &= ~0xFFFFF80000FFC000; // Mask out old data...
540 p0 |= (uint64)height << 14;
542 OPStorePhrase(oldOPP, p0);
545 //WriteLog(" [%08X%08X -> ", (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
546 p2 &= ~0x0000000000FF0000;
547 p2 |= (uint64)remainder << 16;
548 //WriteLog("%08X%08X]\n", (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
549 OPStorePhrase(oldOPP+16, p2);
550 //remainder = (uint8)(p2 >> 16), vscale = (uint8)(p2 >> 8);
551 //WriteLog(" [after]: rem=%02X, vscale=%02X\n", remainder, vscale);
553 op_pointer = (p0 & 0x000007FFFF000000) >> 21;
556 case OBJECT_TYPE_GPU:
558 //WriteLog("OP: Asserting GPU IRQ #3...\n");
559 op_set_current_object(p0);
560 GPUSetIRQLine(3, ASSERT_LINE);
561 //Also, OP processing is suspended from this point until OBF (F00026) is written to...
564 //OPSuspendedByGPU = true;
565 //Dunno if the OP keeps processing from where it was interrupted, or if it just continues
566 //on the next scanline...
569 case OBJECT_TYPE_BRANCH:
571 uint16 ypos = (p0 >> 3) & 0x7FF;
572 uint8 cc = (p0 >> 14) & 0x03;
573 uint32 link = (p0 >> 21) & 0x3FFFF8;
575 // if ((ypos!=507)&&(ypos!=25))
576 // WriteLog("\t%i%s%i link=0x%.8x\n",scanline,condition_to_str[cc],ypos>>1,link);
579 case CONDITION_EQUAL:
580 //Why do this for the equal case? If they wrote an odd YPOS, then it wouldn't be detected!
581 // if (ypos != 0x7FF && (ypos & 0x01))
583 // if ((2 * tom_get_scanline()) == ypos || ypos == 0x7FF)
584 //Here we're using VC instead of the bogus tom_get_scanline() value...
585 if (TOMReadWord(0xF00006, OP) == ypos || ypos == 0x7FF)
588 case CONDITION_LESS_THAN:
589 // if ((2 * tom_get_scanline()) < ypos)
590 if (TOMReadWord(0xF00006, OP) < ypos)
593 case CONDITION_GREATER_THAN:
594 // if ((2 * tom_get_scanline()) > ypos)
595 if (TOMReadWord(0xF00006, OP) > ypos)
598 case CONDITION_OP_FLAG_SET:
599 if (op_get_status_register() & 0x01)
602 case CONDITION_SECOND_HALF_LINE:
603 // This basically means branch if bit 10 of HC is set
604 WriteLog("OP: Unexpected CONDITION_SECOND_HALF_LINE in BRANCH object\nOP: shuting down\n");
609 WriteLog("OP: Unimplemented branch condition %i\n", cc);
613 case OBJECT_TYPE_STOP:
617 //WriteLog("OP: --> STOP\n");
618 // op_set_status_register(((p0>>3) & 0xFFFFFFFF));
619 //This seems more likely...
620 op_set_current_object(p0);
624 tom_set_pending_object_int();
625 if (tom_irq_enabled(IRQ_OPFLAG) && jaguar_interrupt_handler_is_valid(64))
626 m68k_set_irq(7); // Cause an NMI to occur...
633 WriteLog("op: unknown object type %i\n", ((uint8)p0 & 0x07));
640 // Store fixed size bitmap in line buffer
643 // Interesting thing about Rayman: There seems to be a transparent bitmap (1/8/16 bpp--which?)
644 // being rendered under his feet--doesn't align when walking... Check it out!
646 void OPProcessFixedBitmap(int scanline, uint64 p0, uint64 p1, bool render)
648 // Need to make sure that when writing that it stays within the line buffer...
649 // LBUF ($F01800 - $F01D9E) 360 x 32-bit RAM
650 uint8 depth = (p1 >> 12) & 0x07; // Color depth of image
651 int32 xpos = ((int16)((p1 << 4) & 0xFFFF)) >> 4;// Image xpos in LBUF
652 uint32 iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
653 uint32 data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
654 //#ifdef OP_DEBUG_BMP
655 // Prolly should use this... Though not sure exactly how.
656 uint32 firstPix = (p1 >> 49) & 0x3F;
657 // "The LSB is significant only for scaled objects..." -JTRM
658 // "In 1 BPP mode, all five bits are significant. In 2 BPP mode, the top four are significant..."
661 // We can ignore the RELEASE (high order) bit for now--probably forever...!
662 // uint8 flags = (p1 >> 45) & 0x0F; // REFLECT, RMW, TRANS, RELEASE
663 //Optimize: break these out to their own BOOL values
664 uint8 flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
665 bool flagREFLECT = (flags & OPFLAG_REFLECT ? true : false),
666 flagRMW = (flags & OPFLAG_RMW ? true : false),
667 flagTRANS = (flags & OPFLAG_TRANS ? true : false);
668 // "For images with 1 to 4 bits/pixel the top 7 to 4 bits of the index
669 // provide the most significant bits of the palette address."
670 uint8 index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
671 uint32 pitch = (p1 >> 15) & 0x07; // Phrase pitch
672 pitch <<= 3; // Optimization: Multiply pitch by 8
674 // int16 scanlineWidth = tom_getVideoModeWidth();
675 uint8 * tom_ram_8 = tom_get_ram_pointer();
676 uint8 * paletteRAM = &tom_ram_8[0x400];
677 // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct copies--NOT
678 // for use when using endian-corrected data (i.e., any of the *_word_read functions!)
679 uint16 * paletteRAM16 = (uint16 *)paletteRAM;
681 // WriteLog("bitmap %ix? %ibpp at %i,? firstpix=? data=0x%.8x pitch %i hflipped=%s dwidth=? (linked to ?) RMW=%s Tranparent=%s\n",
682 // iwidth, op_bitmap_bit_depth[bitdepth], xpos, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), (flags&OPFLAG_RMW ? "yes" : "no"), (flags&OPFLAG_TRANS ? "yes" : "no"));
684 // Is it OK to have a 0 for the data width??? (i.e., undocumented?)
685 // Seems to be... Seems that dwidth *can* be zero (i.e., reuse same line) as well.
686 // Pitch == 0 is OK too...
687 // if (!render || op_pointer == 0 || ptr == 0 || pitch == 0)
688 //I'm not convinced that we need to concern ourselves with data & op_pointer here either!
689 if (!render || iwidth == 0)
692 //#define OP_DEBUG_BMP
693 //#ifdef OP_DEBUG_BMP
694 // WriteLog("bitmap %ix%i %ibpp at %i,%i firstpix=%i data=0x%.8x pitch %i hflipped=%s dwidth=%i (linked to 0x%.8x) Transluency=%s\n",
695 // iwidth, height, op_bitmap_bit_depth[bitdepth], xpos, ypos, firstPix, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), dwidth, op_pointer, (flags&OPFLAG_RMW ? "yes" : "no"));
698 // int32 leftMargin = xpos, rightMargin = (xpos + (phraseWidthToPixels[depth] * iwidth)) - 1;
699 int32 startPos = xpos, endPos = xpos +
700 (!flagREFLECT ? (phraseWidthToPixels[depth] * iwidth) - 1
701 : -((phraseWidthToPixels[depth] * iwidth) + 1));
702 uint32 clippedWidth = 0, phraseClippedWidth = 0, dataClippedWidth = 0;//, phrasePixel = 0;
703 bool in24BPPMode = (((GET16(tom_ram_8, 0x0028) >> 1) & 0x03) == 1 ? true : false); // VMODE
704 // Not sure if this is Jaguar Two only location or what...
705 // From the docs, it is... If we want to limit here we should think of something else.
706 // int32 limit = GET16(tom_ram_8, 0x0008); // LIMIT
708 int32 lbufWidth = (!in24BPPMode ? limit - 1 : (limit / 2) - 1); // Zero based limit...
710 // If the image is completely to the left or right of the line buffer, then bail.
711 //If in REFLECT mode, then these values are swapped! !!! FIX !!! [DONE]
712 //There are four possibilities:
713 // 1. image sits on left edge and no REFLECT; starts out of bounds but ends in bounds.
714 // 2. image sits on left edge and REFLECT; starts in bounds but ends out of bounds.
715 // 3. image sits on right edge and REFLECT; starts out of bounds but ends in bounds.
716 // 4. image sits on right edge and no REFLECT; starts in bounds but ends out of bounds.
717 //Numbers 2 & 4 can be caught by checking the LBUF clip while in the inner loop,
718 // numbers 1 & 3 are of concern.
719 // This *indirectly* handles only cases 2 & 4! And is WRONG is REFLECT is set...!
720 // if (rightMargin < 0 || leftMargin > lbufWidth)
722 // It might be easier to swap these (if REFLECTed) and just use XPOS down below...
723 // That way, you could simply set XPOS to leftMargin if !REFLECT and to rightMargin otherwise.
724 // Still have to be careful with the DATA and IWIDTH values though...
726 // if ((!flagREFLECT && (rightMargin < 0 || leftMargin > lbufWidth))
727 // || (flagREFLECT && (leftMargin < 0 || rightMargin > lbufWidth)))
729 if ((!flagREFLECT && (endPos < 0 || startPos > lbufWidth))
730 || (flagREFLECT && (startPos < 0 || endPos > lbufWidth)))
733 // Otherwise, find the clip limits and clip the phrase as well...
734 // NOTE: I'm fudging here by letting the actual blit overstep the bounds of the
735 // line buffer, but it shouldn't matter since there are two unused line
736 // buffers below and nothing above and I'll at most write 8 bytes outside
737 // the line buffer... I could use a fractional clip begin/end value, but
738 // this makes the blit a *lot* more hairy. I might fix this in the future
739 // if it becomes necessary. (JLH)
740 // Probably wouldn't be *that* hairy. Just use a delta that tells the inner loop
741 // which pixel in the phrase is being written, and quit when either end of phrases
742 // is reached or line buffer extents are surpassed.
744 //This stuff is probably wrong as well... !!! FIX !!!
745 //The strange thing is that it seems to work, but that's no guarantee that it's bulletproof!
746 //Yup. Seems that JagMania doesn't work correctly with this...
747 //Dunno if this is the problem, but Atari Karts is showing *some* of the road now...
752 clippedWidth = 0 - leftMargin,
753 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
754 leftMargin = 0 - (clippedWidth % phraseWidthToPixels[depth]);
757 if (rightMargin > lbufWidth)
758 clippedWidth = rightMargin - lbufWidth,
759 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];//,
760 // rightMargin = lbufWidth + (clippedWidth % phraseWidthToPixels[depth]);
761 // rightMargin = lbufWidth;
764 WriteLog("We're about to encounter a divide by zero error!\n");
765 // NOTE: We're just using endPos to figure out how much, if any, to clip by.
766 // ALSO: There may be another case where we start out of bounds and end out of bounds...!
768 if (startPos < 0) // Case #1: Begin out, end in, L to R
769 clippedWidth = 0 - startPos,
770 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
771 startPos = 0 - (clippedWidth % phraseWidthToPixels[depth]);
773 if (endPos < 0) // Case #2: Begin in, end out, R to L
774 clippedWidth = 0 - endPos,
775 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];
777 if (endPos > lbufWidth) // Case #3: Begin in, end out, L to R
778 clippedWidth = endPos - lbufWidth,
779 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];
781 if (startPos > lbufWidth) // Case #4: Begin out, end in, R to L
782 clippedWidth = startPos - lbufWidth,
783 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
784 startPos = lbufWidth + (clippedWidth % phraseWidthToPixels[depth]);
786 // If the image is sitting on the line buffer left or right edge, we need to compensate
787 // by decreasing the image phrase width accordingly.
788 iwidth -= phraseClippedWidth;
790 // Also, if we're clipping the phrase we need to make sure we're in the correct part of
792 // data += phraseClippedWidth * (pitch << 3);
793 data += dataClippedWidth * pitch;
795 // NOTE: When the bitmap is in REFLECT mode, the XPOS marks the *right* side of the
796 // bitmap! This makes clipping & etc. MUCH, much easier...!
797 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? leftMargin * 2 : leftMargin * 4);
798 //Why does this work right when multiplying startPos by 2 (instead of 4) for 24 BPP mode?
799 //Is this a bug in the OP?
800 uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 2);
801 uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];
805 // Hmm. We check above for 24 BPP mode, but don't do anything about it below...
806 // If we *were* in 24 BPP mode, how would you convert CRY to RGB24? Seems to me
807 // that if you're in CRY mode then you wouldn't be able to use 24 BPP bitmaps
809 // This seems to be the case (at least according to the Midsummer docs)...!
811 if (depth == 0) // 1 BPP
813 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and or 2 into it.
814 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
816 // Fetch 1st phrase...
817 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
818 //Note that firstPix should only be honored *if* we start with the 1st phrase of the bitmap
819 //i.e., we didn't clip on the margin... !!! FIX !!!
820 pixels <<= firstPix; // Skip first N pixels (N=firstPix)...
821 int i = firstPix; // Start counter at right spot...
827 uint8 bit = pixels >> 63;
828 if (flagTRANS && bit == 0)
833 //Optimize: Set palleteRAM16 to beginning of palette RAM + index*2 and use only [bit] as index...
834 //Won't optimize RMW case though...
835 // This is the *only* correct use of endian-dependent code
836 // (i.e., mem-to-mem direct copying)!
837 *(uint16 *)currentLineBuffer = paletteRAM16[index | bit];
840 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bit) << 1]),
841 *(currentLineBuffer + 1) =
842 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bit) << 1) + 1]);
845 currentLineBuffer += lbufDelta;
849 // Fetch next phrase...
851 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
854 else if (depth == 1) // 2 BPP
857 WriteLog("OP: Fixed bitmap @ 2 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
858 index &= 0xFC; // Top six bits form CLUT index
859 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
860 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
865 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
868 for(int i=0; i<32; i++)
870 uint8 bits = pixels >> 62;
871 // Seems to me that both of these are in the same endian, so we could cast it as
872 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
873 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
874 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
875 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
876 if (flagTRANS && bits == 0)
881 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
884 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
885 *(currentLineBuffer + 1) =
886 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
889 currentLineBuffer += lbufDelta;
894 else if (depth == 2) // 4 BPP
897 WriteLog("OP: Fixed bitmap @ 4 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
898 index &= 0xF0; // Top four bits form CLUT index
899 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
900 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
905 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
908 for(int i=0; i<16; i++)
910 uint8 bits = pixels >> 60;
911 // Seems to me that both of these are in the same endian, so we could cast it as
912 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
913 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
914 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
915 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
916 if (flagTRANS && bits == 0)
921 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
924 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
925 *(currentLineBuffer + 1) =
926 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
929 currentLineBuffer += lbufDelta;
934 else if (depth == 3) // 8 BPP
937 WriteLog("OP: Fixed bitmap @ 8 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
938 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
939 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
944 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
947 for(int i=0; i<8; i++)
949 uint8 bits = pixels >> 56;
950 // Seems to me that both of these are in the same endian, so we could cast it as
951 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
952 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
953 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
954 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
955 if (flagTRANS && bits == 0)
960 *(uint16 *)currentLineBuffer = paletteRAM16[bits];
963 BLEND_CR(*currentLineBuffer, paletteRAM[bits << 1]),
964 *(currentLineBuffer + 1) =
965 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[(bits << 1) + 1]);
968 currentLineBuffer += lbufDelta;
973 else if (depth == 4) // 16 BPP
976 WriteLog("OP: Fixed bitmap @ 16 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
977 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
978 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
983 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
986 for(int i=0; i<4; i++)
988 uint8 bitsHi = pixels >> 56, bitsLo = pixels >> 48;
989 // Seems to me that both of these are in the same endian, so we could cast it as
990 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
991 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
992 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
993 // No, it isn't because we read the memory in an endian safe way--it *won't* work...
994 if (flagTRANS && (bitsLo | bitsHi) == 0)
999 *currentLineBuffer = bitsHi,
1000 *(currentLineBuffer + 1) = bitsLo;
1002 *currentLineBuffer =
1003 BLEND_CR(*currentLineBuffer, bitsHi),
1004 *(currentLineBuffer + 1) =
1005 BLEND_Y(*(currentLineBuffer + 1), bitsLo);
1008 currentLineBuffer += lbufDelta;
1013 else if (depth == 5) // 24 BPP
1015 //Looks like Iron Soldier is the only game that uses 24BPP mode...
1016 //There *might* be others...
1017 //WriteLog("OP: Writing 24 BPP bitmap!\n");
1019 WriteLog("OP: Fixed bitmap @ 24 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
1020 // Not sure, but I think RMW only works with 16 BPP and below, and only in CRY mode...
1021 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and OR 4 into it.
1022 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 4) | 0x04;
1027 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1030 for(int i=0; i<2; i++)
1032 // We don't use a 32-bit var here because of endian issues...!
1033 uint8 bits3 = pixels >> 56, bits2 = pixels >> 48,
1034 bits1 = pixels >> 40, bits0 = pixels >> 32;
1036 if (flagTRANS && (bits3 | bits2 | bits1 | bits0) == 0)
1039 *currentLineBuffer = bits3,
1040 *(currentLineBuffer + 1) = bits2,
1041 *(currentLineBuffer + 2) = bits1,
1042 *(currentLineBuffer + 3) = bits0;
1044 currentLineBuffer += lbufDelta;
1052 // Store scaled bitmap in line buffer
1054 void OPProcessScaledBitmap(int scanline, uint64 p0, uint64 p1, uint64 p2, bool render)
1056 // Need to make sure that when writing that it stays within the line buffer...
1057 // LBUF ($F01800 - $F01D9E) 360 x 32-bit RAM
1058 uint8 depth = (p1 >> 12) & 0x07; // Color depth of image
1059 int32 xpos = ((int16)((p1 << 4) & 0xFFFF)) >> 4;// Image xpos in LBUF
1060 uint32 iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
1061 uint32 data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
1062 //#ifdef OP_DEBUG_BMP
1063 // Prolly should use this... Though not sure exactly how.
1064 //Use the upper bits as an offset into the phrase depending on the BPP. That's how!
1065 uint32 firstPix = (p1 >> 49) & 0x3F;
1066 //This is WEIRD! I'm sure I saw Atari Karts request 8 BPP FIRSTPIX! What happened???
1068 WriteLog("OP: FIRSTPIX != 0! (Scaled BM)\n");
1070 // We can ignore the RELEASE (high order) bit for now--probably forever...!
1071 // uint8 flags = (p1 >> 45) & 0x0F; // REFLECT, RMW, TRANS, RELEASE
1072 //Optimize: break these out to their own BOOL values
1073 uint8 flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
1074 bool flagREFLECT = (flags & OPFLAG_REFLECT ? true : false),
1075 flagRMW = (flags & OPFLAG_RMW ? true : false),
1076 flagTRANS = (flags & OPFLAG_TRANS ? true : false);
1077 uint8 index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
1078 uint32 pitch = (p1 >> 15) & 0x07; // Phrase pitch
1080 // int16 scanlineWidth = tom_getVideoModeWidth();
1081 uint8 * tom_ram_8 = tom_get_ram_pointer();
1082 uint8 * paletteRAM = &tom_ram_8[0x400];
1083 // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct copies--NOT
1084 // for use when using endian-corrected data (i.e., any of the *_word_read functions!)
1085 uint16 * paletteRAM16 = (uint16 *)paletteRAM;
1087 uint8 hscale = p2 & 0xFF;
1088 uint8 horizontalRemainder = hscale; // Not sure if it starts full, but seems reasonable
1089 int32 scaledWidthInPixels = (iwidth * phraseWidthToPixels[depth] * hscale) >> 5;
1090 uint32 scaledPhrasePixels = (phraseWidthToPixels[depth] * hscale) >> 5;
1092 // WriteLog("bitmap %ix? %ibpp at %i,? firstpix=? data=0x%.8x pitch %i hflipped=%s dwidth=? (linked to ?) RMW=%s Tranparent=%s\n",
1093 // iwidth, op_bitmap_bit_depth[bitdepth], xpos, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), (flags&OPFLAG_RMW ? "yes" : "no"), (flags&OPFLAG_TRANS ? "yes" : "no"));
1095 //Looks like an hscale of zero means don't draw!
1096 if (!render || iwidth == 0 || hscale == 0)
1099 //#define OP_DEBUG_BMP
1100 //#ifdef OP_DEBUG_BMP
1101 // WriteLog("bitmap %ix%i %ibpp at %i,%i firstpix=%i data=0x%.8x pitch %i hflipped=%s dwidth=%i (linked to 0x%.8x) Transluency=%s\n",
1102 // iwidth, height, op_bitmap_bit_depth[bitdepth], xpos, ypos, firstPix, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), dwidth, op_pointer, (flags&OPFLAG_RMW ? "yes" : "no"));
1105 int32 startPos = xpos, endPos = xpos +
1106 (!flagREFLECT ? scaledWidthInPixels - 1 : -(scaledWidthInPixels + 1));
1107 uint32 clippedWidth = 0, phraseClippedWidth = 0, dataClippedWidth = 0;
1108 bool in24BPPMode = (((GET16(tom_ram_8, 0x0028) >> 1) & 0x03) == 1 ? true : false); // VMODE
1109 // Not sure if this is Jaguar Two only location or what...
1110 // From the docs, it is... If we want to limit here we should think of something else.
1111 // int32 limit = GET16(tom_ram_8, 0x0008); // LIMIT
1113 int32 lbufWidth = (!in24BPPMode ? limit - 1 : (limit / 2) - 1); // Zero based limit...
1115 // If the image is completely to the left or right of the line buffer, then bail.
1116 //If in REFLECT mode, then these values are swapped! !!! FIX !!! [DONE]
1117 //There are four possibilities:
1118 // 1. image sits on left edge and no REFLECT; starts out of bounds but ends in bounds.
1119 // 2. image sits on left edge and REFLECT; starts in bounds but ends out of bounds.
1120 // 3. image sits on right edge and REFLECT; starts out of bounds but ends in bounds.
1121 // 4. image sits on right edge and no REFLECT; starts in bounds but ends out of bounds.
1122 //Numbers 2 & 4 can be caught by checking the LBUF clip while in the inner loop,
1123 // numbers 1 & 3 are of concern.
1124 // This *indirectly* handles only cases 2 & 4! And is WRONG is REFLECT is set...!
1125 // if (rightMargin < 0 || leftMargin > lbufWidth)
1127 // It might be easier to swap these (if REFLECTed) and just use XPOS down below...
1128 // That way, you could simply set XPOS to leftMargin if !REFLECT and to rightMargin otherwise.
1129 // Still have to be careful with the DATA and IWIDTH values though...
1131 if ((!flagREFLECT && (endPos < 0 || startPos > lbufWidth))
1132 || (flagREFLECT && (startPos < 0 || endPos > lbufWidth)))
1135 // Otherwise, find the clip limits and clip the phrase as well...
1136 // NOTE: I'm fudging here by letting the actual blit overstep the bounds of the
1137 // line buffer, but it shouldn't matter since there are two unused line
1138 // buffers below and nothing above and I'll at most write 40 bytes outside
1139 // the line buffer... I could use a fractional clip begin/end value, but
1140 // this makes the blit a *lot* more hairy. I might fix this in the future
1141 // if it becomes necessary. (JLH)
1142 // Probably wouldn't be *that* hairy. Just use a delta that tells the inner loop
1143 // which pixel in the phrase is being written, and quit when either end of phrases
1144 // is reached or line buffer extents are surpassed.
1146 //This stuff is probably wrong as well... !!! FIX !!!
1147 //The strange thing is that it seems to work, but that's no guarantee that it's bulletproof!
1148 //Yup. Seems that JagMania doesn't work correctly with this...
1149 //Dunno if this is the problem, but Atari Karts is showing *some* of the road now...
1150 //Actually, it is! Or, it was. It doesn't seem to be clipping here, so the problem lies
1151 //elsewhere! Hmm. Putting the scaling code into the 1/2/8 BPP cases seems to draw the ground
1152 // a bit more accurately... Strange!
1153 //It's probably a case of the REFLECT flag being set and the background being written
1154 //from the right side of the screen...
1155 //But no, it isn't... At least if the diagnostics are telling the truth!
1157 // NOTE: We're just using endPos to figure out how much, if any, to clip by.
1158 // ALSO: There may be another case where we start out of bounds and end out of bounds...!
1161 //There's a problem here with scaledPhrasePixels in that it can be forced to zero when
1162 //the scaling factor is small. So fix it already! !!! FIX !!!
1163 /*if (scaledPhrasePixels == 0)
1165 WriteLog("OP: [Scaled] We're about to encounter a divide by zero error!\n");
1166 DumpScaledObject(p0, p1, p2);
1168 //NOTE: I'm almost 100% sure that this is wrong... And it is! :-p
1169 if (startPos < 0) // Case #1: Begin out, end in, L to R
1170 /* clippedWidth = 0 - startPos,
1171 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
1172 startPos = 0 - (clippedWidth % phraseWidthToPixels[depth]);*/
1173 clippedWidth = 0 - startPos,
1174 dataClippedWidth = phraseClippedWidth = clippedWidth / scaledPhrasePixels,
1175 startPos = 0 - (clippedWidth % scaledPhrasePixels);
1177 if (endPos < 0) // Case #2: Begin in, end out, R to L
1178 /* clippedWidth = 0 - endPos,
1179 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];*/
1180 clippedWidth = 0 - endPos,
1181 phraseClippedWidth = clippedWidth / scaledPhrasePixels;
1183 if (endPos > lbufWidth) // Case #3: Begin in, end out, L to R
1184 /* clippedWidth = endPos - lbufWidth,
1185 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];*/
1186 clippedWidth = endPos - lbufWidth,
1187 phraseClippedWidth = clippedWidth / scaledPhrasePixels;
1189 if (startPos > lbufWidth) // Case #4: Begin out, end in, R to L
1190 /* clippedWidth = startPos - lbufWidth,
1191 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
1192 startPos = lbufWidth + (clippedWidth % phraseWidthToPixels[depth]);*/
1193 clippedWidth = startPos - lbufWidth,
1194 dataClippedWidth = phraseClippedWidth = clippedWidth / scaledPhrasePixels,
1195 startPos = lbufWidth + (clippedWidth % scaledPhrasePixels);
1197 extern int op_start_log;
1198 if (op_start_log && clippedWidth != 0)
1199 WriteLog("OP: Clipped line. SP=%i, EP=%i, clip=%u, iwidth=%u, hscale=%02X\n", startPos, endPos, clippedWidth, iwidth, hscale);
1200 if (op_start_log && startPos == 13)
1202 WriteLog("OP: Scaled line. SP=%i, EP=%i, clip=%u, iwidth=%u, hscale=%02X, depth=%u, firstPix=%u\n", startPos, endPos, clippedWidth, iwidth, hscale, depth, firstPix);
1203 DumpScaledObject(p0, p1, p2);
1205 // If the image is sitting on the line buffer left or right edge, we need to compensate
1206 // by decreasing the image phrase width accordingly.
1207 iwidth -= phraseClippedWidth;
1209 // Also, if we're clipping the phrase we need to make sure we're in the correct part of
1211 // data += phraseClippedWidth * (pitch << 3);
1212 data += dataClippedWidth * (pitch << 3);
1214 // NOTE: When the bitmap is in REFLECT mode, the XPOS marks the *right* side of the
1215 // bitmap! This makes clipping & etc. MUCH, much easier...!
1216 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? leftMargin * 2 : leftMargin * 4);
1217 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 4);
1218 uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 2);
1219 uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];
1223 // Hmm. We check above for 24 BPP mode, but don't do anything about it below...
1224 // If we *were* in 24 BPP mode, how would you convert CRY to RGB24? Seems to me
1225 // that if you're in CRY mode then you wouldn't be able to use 24 BPP bitmaps
1227 // This seems to be the case (at least according to the Midsummer docs)...!
1229 if (depth == 0) // 1 BPP
1232 WriteLog("OP: Scaled bitmap @ 1 BPP requesting FIRSTPIX!\n");
1233 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1234 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1237 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1239 while ((int32)iwidth > 0)
1241 uint8 bits = pixels >> 63;
1243 if (flagTRANS && bits == 0)
1248 // This is the *only* correct use of endian-dependent code
1249 // (i.e., mem-to-mem direct copying)!
1250 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1252 *currentLineBuffer =
1253 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1254 *(currentLineBuffer + 1) =
1255 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1258 currentLineBuffer += lbufDelta;
1260 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1261 while (horizontalRemainder & 0x80)
1263 horizontalRemainder += hscale;
1270 int phrasesToSkip = pixCount / 64, pixelShift = pixCount % 64;
1272 data += (pitch << 3) * phrasesToSkip;
1273 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1274 pixels <<= 1 * pixelShift;
1275 iwidth -= phrasesToSkip;
1276 pixCount = pixelShift;
1280 else if (depth == 1) // 2 BPP
1283 WriteLog("OP: Scaled bitmap @ 2 BPP requesting FIRSTPIX!\n");
1284 index &= 0xFC; // Top six bits form CLUT index
1285 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1286 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1289 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1291 while ((int32)iwidth > 0)
1293 uint8 bits = pixels >> 62;
1295 if (flagTRANS && bits == 0)
1300 // This is the *only* correct use of endian-dependent code
1301 // (i.e., mem-to-mem direct copying)!
1302 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1304 *currentLineBuffer =
1305 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1306 *(currentLineBuffer + 1) =
1307 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1310 currentLineBuffer += lbufDelta;
1312 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1313 while (horizontalRemainder & 0x80)
1315 horizontalRemainder += hscale;
1322 int phrasesToSkip = pixCount / 32, pixelShift = pixCount % 32;
1324 data += (pitch << 3) * phrasesToSkip;
1325 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1326 pixels <<= 2 * pixelShift;
1327 iwidth -= phrasesToSkip;
1328 pixCount = pixelShift;
1332 else if (depth == 2) // 4 BPP
1335 WriteLog("OP: Scaled bitmap @ 4 BPP requesting FIRSTPIX!\n");
1336 index &= 0xF0; // Top four bits form CLUT index
1337 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1338 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1341 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1343 while ((int32)iwidth > 0)
1345 uint8 bits = pixels >> 60;
1347 if (flagTRANS && bits == 0)
1352 // This is the *only* correct use of endian-dependent code
1353 // (i.e., mem-to-mem direct copying)!
1354 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1356 *currentLineBuffer =
1357 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1358 *(currentLineBuffer + 1) =
1359 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1362 currentLineBuffer += lbufDelta;
1364 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1365 while (horizontalRemainder & 0x80)
1367 horizontalRemainder += hscale;
1374 int phrasesToSkip = pixCount / 16, pixelShift = pixCount % 16;
1376 data += (pitch << 3) * phrasesToSkip;
1377 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1378 pixels <<= 4 * pixelShift;
1379 iwidth -= phrasesToSkip;
1380 pixCount = pixelShift;
1384 else if (depth == 3) // 8 BPP
1387 WriteLog("OP: Scaled bitmap @ 8 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
1388 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1389 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1392 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1394 while ((int32)iwidth > 0)
1396 uint8 bits = pixels >> 56;
1398 if (flagTRANS && bits == 0)
1403 // This is the *only* correct use of endian-dependent code
1404 // (i.e., mem-to-mem direct copying)!
1405 *(uint16 *)currentLineBuffer = paletteRAM16[bits];
1407 *currentLineBuffer =
1408 BLEND_CR(*currentLineBuffer, paletteRAM[bits << 1]),
1409 *(currentLineBuffer + 1) =
1410 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[(bits << 1) + 1]);
1413 currentLineBuffer += lbufDelta;
1415 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1416 while (horizontalRemainder & 0x80)
1418 horizontalRemainder += hscale;
1425 int phrasesToSkip = pixCount / 8, pixelShift = pixCount % 8;
1427 data += (pitch << 3) * phrasesToSkip;
1428 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1429 pixels <<= 8 * pixelShift;
1430 iwidth -= phrasesToSkip;
1431 pixCount = pixelShift;
1435 else if (depth == 4) // 16 BPP
1438 WriteLog("OP: Scaled bitmap @ 16 BPP requesting FIRSTPIX!\n");
1439 // The LSB is OPFLAG_REFLECT, so sign extend it and OR 2 into it.
1440 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1443 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1445 while ((int32)iwidth > 0)
1447 uint8 bitsHi = pixels >> 56, bitsLo = pixels >> 48;
1449 if (flagTRANS && (bitsLo | bitsHi) == 0)
1454 *currentLineBuffer = bitsHi,
1455 *(currentLineBuffer + 1) = bitsLo;
1457 *currentLineBuffer =
1458 BLEND_CR(*currentLineBuffer, bitsHi),
1459 *(currentLineBuffer + 1) =
1460 BLEND_Y(*(currentLineBuffer + 1), bitsLo);
1463 currentLineBuffer += lbufDelta;
1465 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1466 while (horizontalRemainder & 0x80)
1468 horizontalRemainder += hscale;
1475 int phrasesToSkip = pixCount / 4, pixelShift = pixCount % 4;
1477 data += (pitch << 3) * phrasesToSkip;
1478 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1479 pixels <<= 16 * pixelShift;
1481 iwidth -= phrasesToSkip;
1483 pixCount = pixelShift;
1487 else if (depth == 5) // 24 BPP
1489 //I'm not sure that you can scale a 24 BPP bitmap properly--the JTRM seem to indicate as much.
1490 WriteLog("OP: Writing 24 BPP scaled bitmap!\n");
1492 WriteLog("OP: Scaled bitmap @ 24 BPP requesting FIRSTPIX!\n");
1493 // Not sure, but I think RMW only works with 16 BPP and below, and only in CRY mode...
1494 // The LSB is OPFLAG_REFLECT, so sign extend it and or 4 into it.
1495 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 4) | 0x04;
1500 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1501 data += pitch << 3; // Multiply pitch * 8 (optimize: precompute this value)
1503 for(int i=0; i<2; i++)
1505 uint8 bits3 = pixels >> 56, bits2 = pixels >> 48,
1506 bits1 = pixels >> 40, bits0 = pixels >> 32;
1508 if (flagTRANS && (bits3 | bits2 | bits1 | bits0) == 0)
1511 *currentLineBuffer = bits3,
1512 *(currentLineBuffer + 1) = bits2,
1513 *(currentLineBuffer + 2) = bits1,
1514 *(currentLineBuffer + 3) = bits0;
1516 currentLineBuffer += lbufDelta;
1521 /*if (depth == 3 && startPos == 13)
1524 WriteLog("OP: Writing in the margins...\n");
1525 for(int i=0; i<100*2; i+=2)
1526 // for(int i=0; i<14*2; i+=2)
1527 tom_ram_8[0x1800 + i] = 0xFF,
1528 tom_ram_8[0x1800 + i + 1] = 0xFF;
1530 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 4);
1531 // uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];