4 // Original source by Cal2
5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
6 // Extensive 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(uint64 p0, uint64 p1, bool render);
40 void OPProcessScaledBitmap(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 // Local global variables
47 static uint8 * op_blend_y;
48 static uint8 * op_blend_cr;
49 // There may be a problem with this "RAM" overlapping (and thus being independent of)
50 // some of the regular TOM RAM...
51 static uint8 objectp_ram[0x40]; // This is based at $F00000
52 uint8 objectp_running;
53 //bool objectp_stop_reading_list;
55 static uint8 op_bitmap_bit_depth[8] = { 1, 2, 4, 8, 16, 24, 32, 0 };
56 //static uint32 op_bitmap_bit_size[8] =
57 // { (uint32)(0.125*65536), (uint32)(0.25*65536), (uint32)(0.5*65536), (uint32)(1*65536),
58 // (uint32)(2*65536), (uint32)(1*65536), (uint32)(1*65536), (uint32)(1*65536) };
59 static uint32 op_pointer;
61 int32 phraseWidthToPixels[8] = { 64, 32, 16, 8, 4, 2, 0, 0 };
65 // Object Processor initialization
69 // Blend tables (64K each)
70 memory_malloc_secure((void **)&op_blend_y, 0x10000, "Jaguar Object processor Y blend lookup table");
71 memory_malloc_secure((void **)&op_blend_cr, 0x10000, "Jaguar Object processor CR blend lookup table");
73 // Here we calculate the saturating blend of a signed 4-bit value and an
74 // existing Cyan/Red value as well as a signed 8-bit value and an existing intensity...
75 // Note: CRY is 4 bits Cyan, 4 bits Red, 16 bits intensitY
76 for(int i=0; i<256*256; i++)
78 int y = (i >> 8) & 0xFF;
79 int dy = (INT8)i; // Sign extend the Y index
80 int c1 = (i >> 8) & 0x0F;
81 int dc1 = (INT8)(i << 4) >> 4; // Sign extend the R index
82 int c2 = (i >> 12) & 0x0F;
83 int dc2 = (INT8)(i & 0xF0) >> 4; // Sign extend the C index
103 op_blend_cr[i] = (c2 << 4) | c1;
110 // Object Processor reset
114 memset(objectp_ram, 0x00, 0x40);
121 { "(BITMAP)", "(SCALED BITMAP)", "(GPU INT)", "(BRANCH)", "(STOP)", "???", "???", "???" };
123 { "\"==\"", "\"<\"", "\">\"", "(opflag set)", "(second half line)", "?", "?", "?" };
125 uint32 olp = op_get_list_pointer();
126 WriteLog("OP: OLP = %08X\n", olp);
127 WriteLog("OP: Phrase dump\n ----------\n");
128 for(uint32 i=0; i<0x100; i+=8)
130 uint32 hi = JaguarReadLong(olp + i, OP), lo = JaguarReadLong(olp + i + 4, OP);
131 WriteLog("\t%08X: %08X %08X %s", olp + i, hi, lo, opType[lo & 0x07]);
132 if ((lo & 0x07) == 3)
134 uint16 ypos = (lo >> 3) & 0x7FF;
135 uint8 cc = (lo >> 14) & 0x03;
136 uint32 link = ((hi << 11) | (lo >> 21)) & 0x3FFFF8;
137 WriteLog(" YPOS=%u, CC=%s, link=%08X", ypos, ccType[cc], link);
140 if ((lo & 0x07) == 0)
141 DumpFixedObject(op_load_phrase(olp+i), op_load_phrase(olp+i+8));
142 if ((lo & 0x07) == 1)
143 DumpScaledObject(op_load_phrase(olp+i), op_load_phrase(olp+i+8), op_load_phrase(olp+i+16));
149 // Object Processor memory access
150 // Memory range: F00010 - F00027
152 // F00010-F00017 R xxxxxxxx xxxxxxxx OB - current object code from the graphics processor
153 // F00020-F00023 W xxxxxxxx xxxxxxxx OLP - start of the object list
154 // F00026 W -------- -------x OBF - object processor flag
157 uint8 OPReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
160 return objectp_ram[offset];
163 uint16 OPReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
166 return GET16(objectp_ram, offset);
169 void OPWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
172 objectp_ram[offset] = data;
175 void OPWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
178 SET16(objectp_ram, offset, data);
180 /*if (offset == 0x20)
181 WriteLog("OP: Setting lo list pointer: %04X\n", data);
183 WriteLog("OP: Setting hi list pointer: %04X\n", data);//*/
186 uint32 op_get_list_pointer(void)
188 // Note: This register is LO / HI WORD, hence the funky look of this...
189 // return (objectp_ram[0x22] << 24) | (objectp_ram[0x23] << 16) | (objectp_ram[0x20] << 8) | objectp_ram[0x21];
190 return GET16(objectp_ram, 0x20) | (GET16(objectp_ram, 0x22) << 16);
193 // This is WRONG, since the OBF is only 16 bits wide!!! [FIXED]
195 uint32 op_get_status_register(void)
197 // return (objectp_ram[0x26] << 24) | (objectp_ram[0x27] << 16) | (objectp_ram[0x28] << 8) | objectp_ram[0x29];
198 // return GET32(objectp_ram, 0x26);
199 return GET16(objectp_ram, 0x26);
202 // This is WRONG, since the OBF is only 16 bits wide!!! [FIXED]
204 void op_set_status_register(uint32 data)
206 /* objectp_ram[0x26] = (data & 0xFF000000) >> 24;
207 objectp_ram[0x27] = (data & 0x00FF0000) >> 16;
208 objectp_ram[0x28] = (data & 0x0000FF00) >> 8;
209 objectp_ram[0x29] |= (data & 0xFE);*/
210 objectp_ram[0x26] = (data & 0x0000FF00) >> 8;
211 objectp_ram[0x27] |= (data & 0xFE);
214 void op_set_current_object(uint64 object)
216 //Not sure this is right... Wouldn't it just be stored 64 bit BE?
217 // Stored as least significant 32 bits first, ms32 last in big endian
218 /* objectp_ram[0x13] = object & 0xFF; object >>= 8;
219 objectp_ram[0x12] = object & 0xFF; object >>= 8;
220 objectp_ram[0x11] = object & 0xFF; object >>= 8;
221 objectp_ram[0x10] = object & 0xFF; object >>= 8;
223 objectp_ram[0x17] = object & 0xFF; object >>= 8;
224 objectp_ram[0x16] = object & 0xFF; object >>= 8;
225 objectp_ram[0x15] = object & 0xFF; object >>= 8;
226 objectp_ram[0x14] = object & 0xFF;*/
227 // Let's try regular good old big endian...
228 objectp_ram[0x17] = object & 0xFF; object >>= 8;
229 objectp_ram[0x16] = object & 0xFF; object >>= 8;
230 objectp_ram[0x15] = object & 0xFF; object >>= 8;
231 objectp_ram[0x14] = object & 0xFF; object >>= 8;
233 objectp_ram[0x13] = object & 0xFF; object >>= 8;
234 objectp_ram[0x12] = object & 0xFF; object >>= 8;
235 objectp_ram[0x11] = object & 0xFF; object >>= 8;
236 objectp_ram[0x10] = object & 0xFF;
239 uint64 op_load_phrase(uint32 offset)
241 offset &= ~0x07; // 8 byte alignment
242 return ((uint64)JaguarReadLong(offset, OP) << 32) | (uint64)JaguarReadLong(offset+4, OP);
245 void OPStorePhrase(uint32 offset, uint64 p)
247 offset &= ~0x07; // 8 byte alignment
248 JaguarWriteLong(offset, p >> 32, OP);
249 JaguarWriteLong(offset + 4, p & 0xFFFFFFFF, OP);
253 // Debugging routines
255 void DumpScaledObject(uint64 p0, uint64 p1, uint64 p2)
257 WriteLog(" (SCALED BITMAP)");
258 WriteLog(" %08X --> phrase %08X %08X\n", op_pointer, (uint32)(p1>>32), (uint32)(p1&0xFFFFFFFF));
259 WriteLog(" %08X --> phrase %08X %08X ", op_pointer+8, (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
260 uint8 bitdepth = (p1 >> 12) & 0x07;
261 //WAS: int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
262 int16 ypos = ((p0 >> 3) & 0x7FF); // ??? What if not interlaced (/2)?
263 int32 xpos = p1 & 0xFFF;
264 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
265 uint32 iwidth = ((p1 >> 28) & 0x3FF);
266 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
267 uint16 height = ((p0 >> 14) & 0x3FF);
268 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
269 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
270 uint32 firstPix = (p1 >> 49) & 0x3F;
271 uint8 flags = (p1 >> 45) & 0x0F;
272 uint8 idx = (p1 >> 38) & 0x7F;
273 uint32 pitch = (p1 >> 15) & 0x07;
274 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",
275 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);
276 uint32 hscale = p2 & 0xFF;
277 uint32 vscale = (p2 >> 8) & 0xFF;
278 uint32 remainder = (p2 >> 16) & 0xFF;
279 WriteLog(" [hsc: %02X, vsc: %02X, rem: %02X]\n", hscale, vscale, remainder);
282 void DumpFixedObject(uint64 p0, uint64 p1)
284 WriteLog(" (BITMAP)");
285 WriteLog(" %08X --> phrase %08X %08X\n", op_pointer, (uint32)(p1>>32), (uint32)(p1&0xFFFFFFFF));
286 uint8 bitdepth = (p1 >> 12) & 0x07;
287 //WAS: int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
288 int16 ypos = ((p0 >> 3) & 0x7FF); // ??? What if not interlaced (/2)?
289 int32 xpos = p1 & 0xFFF;
290 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
291 uint32 iwidth = ((p1 >> 28) & 0x3FF);
292 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
293 uint16 height = ((p0 >> 14) & 0x3FF);
294 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
295 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
296 uint32 firstPix = (p1 >> 49) & 0x3F;
297 uint8 flags = (p1 >> 45) & 0x0F;
298 uint8 idx = (p1 >> 38) & 0x7F;
299 uint32 pitch = (p1 >> 15) & 0x07;
300 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",
301 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);
305 // Object Processor main routine
307 //Need to fix this so that when an GPU object IRQ happens, we can pick up OP processing
308 //where we left off. !!! FIX !!!
309 void OPProcessList(int scanline, bool render)
311 extern int op_start_log;
312 // char * condition_to_str[8] =
313 // { "==", "<", ">", "(opflag set)", "(second half line)", "?", "?", "?" };
315 op_pointer = op_get_list_pointer();
317 // objectp_stop_reading_list = false;
319 //WriteLog("OP: Processing line #%u (OLP=%08X)...\n", scanline, op_pointer);
322 // *** BEGIN OP PROCESSOR TESTING ONLY ***
323 extern bool interactiveMode;
325 extern int objectPtr;
327 int bitmapCounter = 0;
328 // *** END OP PROCESSOR TESTING ONLY ***
330 // if (op_pointer) WriteLog(" new op list at 0x%.8x scanline %i\n",op_pointer,scanline);
333 // *** BEGIN OP PROCESSOR TESTING ONLY ***
334 if (interactiveMode && bitmapCounter == objectPtr)
338 // *** END OP PROCESSOR TESTING ONLY ***
339 // if (objectp_stop_reading_list)
342 uint64 p0 = op_load_phrase(op_pointer);
343 //WriteLog("\t%08X type %i\n", op_pointer, (uint8)p0 & 0x07);
345 if (scanline == tom_get_vdb() && op_start_log)
346 //if (scanline == 215 && op_start_log)
348 WriteLog("%08X --> phrase %08X %08X", op_pointer - 8, (int)(p0>>32), (int)(p0&0xFFFFFFFF));
349 if ((p0 & 0x07) == OBJECT_TYPE_BITMAP)
351 WriteLog(" (BITMAP) ");
352 uint64 p1 = op_load_phrase(op_pointer);
353 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer, (int)(p1>>32), (int)(p1&0xFFFFFFFF));
354 uint8 bitdepth = (p1 >> 12) & 0x07;
355 //WAS: int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
356 int16 ypos = ((p0 >> 3) & 0x7FF); // ??? What if not interlaced (/2)?
357 int32 xpos = p1 & 0xFFF;
358 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
359 uint32 iwidth = ((p1 >> 28) & 0x3FF);
360 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
361 uint16 height = ((p0 >> 14) & 0x3FF);
362 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
363 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
364 uint32 firstPix = (p1 >> 49) & 0x3F;
365 uint8 flags = (p1 >> 45) & 0x0F;
366 uint8 idx = (p1 >> 38) & 0x7F;
367 uint32 pitch = (p1 >> 15) & 0x07;
368 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",
369 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);
371 if ((p0 & 0x07) == OBJECT_TYPE_SCALE)
373 WriteLog(" (SCALED BITMAP)");
374 uint64 p1 = op_load_phrase(op_pointer), p2 = op_load_phrase(op_pointer+8);
375 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer, (int)(p1>>32), (int)(p1&0xFFFFFFFF));
376 WriteLog("\n%08X --> phrase %08X %08X ", op_pointer+8, (int)(p2>>32), (int)(p2&0xFFFFFFFF));
377 uint8 bitdepth = (p1 >> 12) & 0x07;
378 //WAS: int16 ypos = ((p0 >> 3) & 0x3FF); // ??? What if not interlaced (/2)?
379 int16 ypos = ((p0 >> 3) & 0x7FF); // ??? What if not interlaced (/2)?
380 int32 xpos = p1 & 0xFFF;
381 xpos = (xpos & 0x800 ? xpos | 0xFFFFF000 : xpos);
382 uint32 iwidth = ((p1 >> 28) & 0x3FF);
383 uint32 dwidth = ((p1 >> 18) & 0x3FF); // Unsigned!
384 uint16 height = ((p0 >> 14) & 0x3FF);
385 uint32 link = ((p0 >> 24) & 0x7FFFF) << 3;
386 uint32 ptr = ((p0 >> 43) & 0x1FFFFF) << 3;
387 uint32 firstPix = (p1 >> 49) & 0x3F;
388 uint8 flags = (p1 >> 45) & 0x0F;
389 uint8 idx = (p1 >> 38) & 0x7F;
390 uint32 pitch = (p1 >> 15) & 0x07;
391 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",
392 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);
393 uint32 hscale = p2 & 0xFF;
394 uint32 vscale = (p2 >> 8) & 0xFF;
395 uint32 remainder = (p2 >> 16) & 0xFF;
396 WriteLog(" [hsc: %02X, vsc: %02X, rem: %02X]\n", hscale, vscale, remainder);
398 if ((p0 & 0x07) == OBJECT_TYPE_GPU)
399 WriteLog(" (GPU)\n");
400 if ((p0 & 0x07) == OBJECT_TYPE_BRANCH)
402 WriteLog(" (BRANCH)\n");
403 uint8 * jaguar_mainRam = GetRamPtr();
404 WriteLog("[RAM] --> ");
405 for(int k=0; k<8; k++)
406 WriteLog("%02X ", jaguar_mainRam[op_pointer-8 + k]);
409 if ((p0 & 0x07) == OBJECT_TYPE_STOP)
410 WriteLog(" --> List end\n");
413 switch ((uint8)p0 & 0x07)
415 case OBJECT_TYPE_BITMAP:
417 //WAS: uint16 ypos = (p0 >> 3) & 0x3FF;
418 uint16 ypos = (p0 >> 3) & 0x7FF;
419 // This is only theory implied by Rayman...!
420 // It seems that if the YPOS is zero, then bump the YPOS value so that it coincides with
421 // the VDB value. With interlacing, this would be slightly more tricky.
422 // There's probably another bit somewhere that enables this mode--but so far, doesn't seem
423 // to affect any other game in a negative way (that I've seen).
424 // Either that, or it's an undocumented bug...
426 //No, the reason this was needed is that the OP code before was wrong. Any value
427 //less than VDB will get written to the top line of the display!
429 // ypos = TOMReadWord(0xF00046, OP) / 2; // Get the VDB value
430 uint32 height = (p0 & 0xFFC000) >> 14;
431 uint32 oldOPP = op_pointer - 8;
432 // *** BEGIN OP PROCESSOR TESTING ONLY ***
433 if (inhibit && op_start_log)
434 WriteLog("!!! ^^^ This object is INHIBITED! ^^^ !!!\n");
436 if (!inhibit) // For OP testing only!
437 // *** END OP PROCESSOR TESTING ONLY ***
438 if (scanline >= ypos && height > 0)
440 uint64 p1 = op_load_phrase(op_pointer);
442 //WriteLog("OP: Writing scanline %d with ypos == %d...\n", scanline, ypos);
443 //WriteLog("--> Writing %u BPP bitmap...\n", op_bitmap_bit_depth[(p1 >> 12) & 0x07]);
444 // OPProcessFixedBitmap(scanline, p0, p1, render);
445 OPProcessFixedBitmap(p0, p1, render);
449 //???Does this really happen??? Doesn't seem to work if you do this...!
450 //Probably not. Must be a bug in the documentation...!
451 // uint32 link = (p0 & 0x7FFFF000000) >> 21;
452 // SET16(objectp_ram, 0x20, link & 0xFFFF); // OLP
453 // SET16(objectp_ram, 0x22, link >> 16);
454 /* uint32 height = (p0 & 0xFFC000) >> 14;
457 // NOTE: Would subtract 2 if in interlaced mode...!
458 // uint64 height = ((p0 & 0xFFC000) - 0x4000) & 0xFFC000;
462 uint64 data = (p0 & 0xFFFFF80000000000LL) >> 40;
463 uint64 dwidth = (p1 & 0xFFC0000) >> 15;
466 p0 &= ~0xFFFFF80000FFC000LL; // Mask out old data...
467 p0 |= (uint64)height << 14;
469 OPStorePhrase(oldOPP, p0);
471 //WriteLog("\t\tOld OP: %08X -> ", op_pointer);
472 //Temp, for testing...
473 //No doubt, this type of check will break all kinds of stuff... !!! FIX !!!
474 if (op_pointer > ((p0 & 0x000007FFFF000000LL) >> 21))
477 op_pointer = (p0 & 0x000007FFFF000000LL) >> 21;
478 //WriteLog("New OP: %08X\n", op_pointer);
481 case OBJECT_TYPE_SCALE:
483 //WAS: uint16 ypos = (p0 >> 3) & 0x3FF;
484 uint16 ypos = (p0 >> 3) & 0x7FF;
485 uint32 height = (p0 & 0xFFC000) >> 14;
486 uint32 oldOPP = op_pointer - 8;
487 // *** BEGIN OP PROCESSOR TESTING ONLY ***
488 if (inhibit && op_start_log)
490 WriteLog("!!! ^^^ This object is INHIBITED! ^^^ !!! (scanline=%u, ypos=%u, height=%u)\n", scanline, ypos, height);
491 DumpScaledObject(p0, op_load_phrase(op_pointer), op_load_phrase(op_pointer+8));
494 if (!inhibit) // For OP testing only!
495 // *** END OP PROCESSOR TESTING ONLY ***
496 if (scanline >= ypos && height > 0)
498 uint64 p1 = op_load_phrase(op_pointer);
500 uint64 p2 = op_load_phrase(op_pointer);
502 //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));
503 OPProcessScaledBitmap(p0, p1, p2, render);
507 uint8 remainder = p2 >> 16, vscale = p2 >> 8;
508 //Actually, we should skip this object if it has a vscale of zero.
509 //Or do we? Not sure... Atari Karts has a few lines that look like:
511 //000E8268 --> phrase 00010000 7000B00D
512 // [7 (0) x 1 @ (13, 0) (8 bpp), l: 000E82A0, p: 000E0FC0 fp: 00, fl:RELEASE, idx:00, pt:01]
513 // [hsc: 9A, vsc: 00, rem: 00]
514 // Could it be the vscale is overridden if the DWIDTH is zero? Hmm...
517 vscale = 0x20; // OP bug??? Nope, it isn't...! Or is it?
519 //extern int start_logging;
521 // WriteLog("--> Returned from scaled bitmap processing (rem=%02X, vscale=%02X)...\n", remainder, vscale);//*/
523 //--> Returned from scaled bitmap processing (rem=20, vscale=80)...
524 //There are other problems here, it looks like...
526 //About to execute OP (508)...
528 OP: Scaled bitmap 4x? 4bpp at 38,? hscale=7C fpix=0 data=00075E28 pitch 1 hflipped=no dwidth=? (linked to 00071118) Transluency=no
529 --> Returned from scaled bitmap processing (rem=50, vscale=7C)...
530 OP: Scaled bitmap 4x? 4bpp at 38,? hscale=7C fpix=0 data=00075E28 pitch 1 hflipped=no dwidth=? (linked to 00071118) Transluency=no
531 --> Returned from scaled bitmap processing (rem=30, vscale=7C)...
532 OP: Scaled bitmap 4x? 4bpp at 38,? hscale=7C fpix=0 data=00075E28 pitch 1 hflipped=no dwidth=? (linked to 00071118) Transluency=no
533 --> Returned from scaled bitmap processing (rem=10, vscale=7C)...
534 OP: Scaled bitmap 4x? 4bpp at 36,? hscale=7E fpix=0 data=000756A8 pitch 1 hflipped=no dwidth=? (linked to 00073058) Transluency=no
535 --> Returned from scaled bitmap processing (rem=00, vscale=7E)...
536 OP: Scaled bitmap 4x? 4bpp at 34,? hscale=80 fpix=0 data=000756C8 pitch 1 hflipped=no dwidth=? (linked to 00073078) Transluency=no
537 --> Returned from scaled bitmap processing (rem=00, vscale=80)...
538 OP: Scaled bitmap 4x? 4bpp at 36,? hscale=7E fpix=0 data=000756C8 pitch 1 hflipped=no dwidth=? (linked to 00073058) Transluency=no
539 --> Returned from scaled bitmap processing (rem=5E, vscale=7E)...
540 OP: Scaled bitmap 4x? 4bpp at 34,? hscale=80 fpix=0 data=000756E8 pitch 1 hflipped=no dwidth=? (linked to 00073078) Transluency=no
541 --> Returned from scaled bitmap processing (rem=60, vscale=80)...
542 OP: Scaled bitmap 4x? 4bpp at 36,? hscale=7E fpix=0 data=000756C8 pitch 1 hflipped=no dwidth=? (linked to 00073058) Transluency=no
543 --> Returned from scaled bitmap processing (rem=3E, vscale=7E)...
544 OP: Scaled bitmap 4x? 4bpp at 34,? hscale=80 fpix=0 data=000756E8 pitch 1 hflipped=no dwidth=? (linked to 00073078) Transluency=no
545 --> Returned from scaled bitmap processing (rem=40, vscale=80)...
546 OP: Scaled bitmap 4x? 4bpp at 36,? hscale=7E fpix=0 data=000756C8 pitch 1 hflipped=no dwidth=? (linked to 00073058) Transluency=no
547 --> Returned from scaled bitmap processing (rem=1E, vscale=7E)...
548 OP: Scaled bitmap 4x? 4bpp at 34,? hscale=80 fpix=0 data=000756E8 pitch 1 hflipped=no dwidth=? (linked to 00073078) Transluency=no
549 --> Returned from scaled bitmap processing (rem=20, vscale=80)...
551 //Here's another problem:
552 // [hsc: 20, vsc: 20, rem: 00]
553 // Since we're not checking for $E0 (but that's what we get from the above), we end
554 // up repeating this scanline unnecessarily... !!! FIX !!! [DONE, but... still not quite
555 // right. Either that, or the Accolade team that wrote Bubsy screwed up royal.]
556 //Also note: $E0 = 7.0 which IS a legal vscale value...
558 // if (remainder & 0x80) // I.e., it's negative
559 // if ((remainder & 0x80) || remainder == 0) // I.e., it's <= 0
560 // if ((remainder - 1) >= 0xE0) // I.e., it's <= 0
561 // if ((remainder >= 0xE1) || remainder == 0)// I.e., it's <= 0
562 // if ((remainder >= 0xE1 && remainder <= 0xFF) || remainder == 0)// I.e., it's <= 0
563 if (remainder <= 0x20) // I.e., it's <= 0
565 uint64 data = (p0 & 0xFFFFF80000000000LL) >> 40;
566 uint64 dwidth = (p1 & 0xFFC0000) >> 15;
568 // while (remainder & 0x80)
569 // while ((remainder & 0x80) || remainder == 0)
570 // while ((remainder - 1) >= 0xE0)
571 // while ((remainder >= 0xE1) || remainder == 0)
572 // while ((remainder >= 0xE1 && remainder <= 0xFF) || remainder == 0)
573 while (remainder <= 0x20)
583 p0 &= ~0xFFFFF80000FFC000LL; // Mask out old data...
584 p0 |= (uint64)height << 14;
586 OPStorePhrase(oldOPP, p0);
589 remainder -= 0x20; // 1.0f in [3.5] fixed point format
592 // WriteLog("--> Finished writebacks...\n");//*/
594 //WriteLog(" [%08X%08X -> ", (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
595 p2 &= ~0x0000000000FF0000LL;
596 p2 |= (uint64)remainder << 16;
597 //WriteLog("%08X%08X]\n", (uint32)(p2>>32), (uint32)(p2&0xFFFFFFFF));
598 OPStorePhrase(oldOPP+16, p2);
599 //remainder = (uint8)(p2 >> 16), vscale = (uint8)(p2 >> 8);
600 //WriteLog(" [after]: rem=%02X, vscale=%02X\n", remainder, vscale);
602 op_pointer = (p0 & 0x000007FFFF000000LL) >> 21;
605 case OBJECT_TYPE_GPU:
607 //WriteLog("OP: Asserting GPU IRQ #3...\n");
608 op_set_current_object(p0);
609 GPUSetIRQLine(3, ASSERT_LINE);
610 //Also, OP processing is suspended from this point until OBF (F00026) is written to...
613 //OPSuspendedByGPU = true;
614 //Dunno if the OP keeps processing from where it was interrupted, or if it just continues
615 //on the next scanline...
616 // --> It continues from where it was interrupted! !!! FIX !!!
619 case OBJECT_TYPE_BRANCH:
621 uint16 ypos = (p0 >> 3) & 0x7FF;
622 uint8 cc = (p0 >> 14) & 0x03;
623 uint32 link = (p0 >> 21) & 0x3FFFF8;
625 // if ((ypos!=507)&&(ypos!=25))
626 // WriteLog("\t%i%s%i link=0x%.8x\n",scanline,condition_to_str[cc],ypos>>1,link);
629 case CONDITION_EQUAL:
630 if (TOMReadWord(0xF00006, OP) == ypos || ypos == 0x7FF)
633 case CONDITION_LESS_THAN:
634 if (TOMReadWord(0xF00006, OP) < ypos)
637 case CONDITION_GREATER_THAN:
638 if (TOMReadWord(0xF00006, OP) > ypos)
641 case CONDITION_OP_FLAG_SET:
642 if (op_get_status_register() & 0x01)
645 case CONDITION_SECOND_HALF_LINE:
646 // This basically means branch if bit 10 of HC is set
647 WriteLog("OP: Unexpected CONDITION_SECOND_HALF_LINE in BRANCH object\nOP: shuting down\n");
652 WriteLog("OP: Unimplemented branch condition %i\n", cc);
656 case OBJECT_TYPE_STOP:
660 //WriteLog("OP: --> STOP\n");
661 // op_set_status_register(((p0>>3) & 0xFFFFFFFF));
662 //This seems more likely...
663 op_set_current_object(p0);
667 tom_set_pending_object_int();
668 if (tom_irq_enabled(IRQ_OPFLAG))// && jaguar_interrupt_handler_is_valid(64))
669 m68k_set_irq(7); // Cause an NMI to occur...
676 WriteLog("op: unknown object type %i\n", ((uint8)p0 & 0x07));
683 // Store fixed size bitmap in line buffer
685 void OPProcessFixedBitmap(uint64 p0, uint64 p1, bool render)
687 // Need to make sure that when writing that it stays within the line buffer...
688 // LBUF ($F01800 - $F01D9E) 360 x 32-bit RAM
689 uint8 depth = (p1 >> 12) & 0x07; // Color depth of image
690 int32 xpos = ((int16)((p1 << 4) & 0xFFFF)) >> 4;// Image xpos in LBUF
691 uint32 iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
692 uint32 data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
693 //#ifdef OP_DEBUG_BMP
694 uint32 firstPix = (p1 >> 49) & 0x3F;
695 // "The LSB is significant only for scaled objects..." -JTRM
696 // "In 1 BPP mode, all five bits are significant. In 2 BPP mode, the top four are significant..."
699 // We can ignore the RELEASE (high order) bit for now--probably forever...!
700 // uint8 flags = (p1 >> 45) & 0x0F; // REFLECT, RMW, TRANS, RELEASE
701 //Optimize: break these out to their own BOOL values
702 uint8 flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
703 bool flagREFLECT = (flags & OPFLAG_REFLECT ? true : false),
704 flagRMW = (flags & OPFLAG_RMW ? true : false),
705 flagTRANS = (flags & OPFLAG_TRANS ? true : false);
706 // "For images with 1 to 4 bits/pixel the top 7 to 4 bits of the index
707 // provide the most significant bits of the palette address."
708 uint8 index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
709 uint32 pitch = (p1 >> 15) & 0x07; // Phrase pitch
710 pitch <<= 3; // Optimization: Multiply pitch by 8
712 // int16 scanlineWidth = tom_getVideoModeWidth();
713 uint8 * tom_ram_8 = tom_get_ram_pointer();
714 uint8 * paletteRAM = &tom_ram_8[0x400];
715 // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct copies--NOT
716 // for use when using endian-corrected data (i.e., any of the *_word_read functions!)
717 uint16 * paletteRAM16 = (uint16 *)paletteRAM;
719 // WriteLog("bitmap %ix? %ibpp at %i,? firstpix=? data=0x%.8x pitch %i hflipped=%s dwidth=? (linked to ?) RMW=%s Tranparent=%s\n",
720 // iwidth, op_bitmap_bit_depth[bitdepth], xpos, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), (flags&OPFLAG_RMW ? "yes" : "no"), (flags&OPFLAG_TRANS ? "yes" : "no"));
722 // Is it OK to have a 0 for the data width??? (i.e., undocumented?)
723 // Seems to be... Seems that dwidth *can* be zero (i.e., reuse same line) as well.
724 // Pitch == 0 is OK too...
725 // if (!render || op_pointer == 0 || ptr == 0 || pitch == 0)
726 //I'm not convinced that we need to concern ourselves with data & op_pointer here either!
727 if (!render || iwidth == 0)
730 //#define OP_DEBUG_BMP
731 //#ifdef OP_DEBUG_BMP
732 // 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",
733 // 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"));
736 // int32 leftMargin = xpos, rightMargin = (xpos + (phraseWidthToPixels[depth] * iwidth)) - 1;
737 int32 startPos = xpos, endPos = xpos +
738 (!flagREFLECT ? (phraseWidthToPixels[depth] * iwidth) - 1
739 : -((phraseWidthToPixels[depth] * iwidth) + 1));
740 uint32 clippedWidth = 0, phraseClippedWidth = 0, dataClippedWidth = 0;//, phrasePixel = 0;
741 bool in24BPPMode = (((GET16(tom_ram_8, 0x0028) >> 1) & 0x03) == 1 ? true : false); // VMODE
742 // Not sure if this is Jaguar Two only location or what...
743 // From the docs, it is... If we want to limit here we should think of something else.
744 // int32 limit = GET16(tom_ram_8, 0x0008); // LIMIT
746 int32 lbufWidth = (!in24BPPMode ? limit - 1 : (limit / 2) - 1); // Zero based limit...
748 // If the image is completely to the left or right of the line buffer, then bail.
749 //If in REFLECT mode, then these values are swapped! !!! FIX !!! [DONE]
750 //There are four possibilities:
751 // 1. image sits on left edge and no REFLECT; starts out of bounds but ends in bounds.
752 // 2. image sits on left edge and REFLECT; starts in bounds but ends out of bounds.
753 // 3. image sits on right edge and REFLECT; starts out of bounds but ends in bounds.
754 // 4. image sits on right edge and no REFLECT; starts in bounds but ends out of bounds.
755 //Numbers 2 & 4 can be caught by checking the LBUF clip while in the inner loop,
756 // numbers 1 & 3 are of concern.
757 // This *indirectly* handles only cases 2 & 4! And is WRONG is REFLECT is set...!
758 // if (rightMargin < 0 || leftMargin > lbufWidth)
760 // It might be easier to swap these (if REFLECTed) and just use XPOS down below...
761 // That way, you could simply set XPOS to leftMargin if !REFLECT and to rightMargin otherwise.
762 // Still have to be careful with the DATA and IWIDTH values though...
764 // if ((!flagREFLECT && (rightMargin < 0 || leftMargin > lbufWidth))
765 // || (flagREFLECT && (leftMargin < 0 || rightMargin > lbufWidth)))
767 if ((!flagREFLECT && (endPos < 0 || startPos > lbufWidth))
768 || (flagREFLECT && (startPos < 0 || endPos > lbufWidth)))
771 // Otherwise, find the clip limits and clip the phrase as well...
772 // NOTE: I'm fudging here by letting the actual blit overstep the bounds of the
773 // line buffer, but it shouldn't matter since there are two unused line
774 // buffers below and nothing above and I'll at most write 8 bytes outside
775 // the line buffer... I could use a fractional clip begin/end value, but
776 // this makes the blit a *lot* more hairy. I might fix this in the future
777 // if it becomes necessary. (JLH)
778 // Probably wouldn't be *that* hairy. Just use a delta that tells the inner loop
779 // which pixel in the phrase is being written, and quit when either end of phrases
780 // is reached or line buffer extents are surpassed.
782 //This stuff is probably wrong as well... !!! FIX !!!
783 //The strange thing is that it seems to work, but that's no guarantee that it's bulletproof!
784 //Yup. Seems that JagMania doesn't work correctly with this...
785 //Dunno if this is the problem, but Atari Karts is showing *some* of the road now...
790 clippedWidth = 0 - leftMargin,
791 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
792 leftMargin = 0 - (clippedWidth % phraseWidthToPixels[depth]);
795 if (rightMargin > lbufWidth)
796 clippedWidth = rightMargin - lbufWidth,
797 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];//,
798 // rightMargin = lbufWidth + (clippedWidth % phraseWidthToPixels[depth]);
799 // rightMargin = lbufWidth;
802 WriteLog("OP: We're about to encounter a divide by zero error!\n");
803 // NOTE: We're just using endPos to figure out how much, if any, to clip by.
804 // ALSO: There may be another case where we start out of bounds and end out of bounds...!
806 if (startPos < 0) // Case #1: Begin out, end in, L to R
807 clippedWidth = 0 - startPos,
808 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
809 startPos = 0 - (clippedWidth % phraseWidthToPixels[depth]);
811 if (endPos < 0) // Case #2: Begin in, end out, R to L
812 clippedWidth = 0 - endPos,
813 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];
815 if (endPos > lbufWidth) // Case #3: Begin in, end out, L to R
816 clippedWidth = endPos - lbufWidth,
817 phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth];
819 if (startPos > lbufWidth) // Case #4: Begin out, end in, R to L
820 clippedWidth = startPos - lbufWidth,
821 dataClippedWidth = phraseClippedWidth = clippedWidth / phraseWidthToPixels[depth],
822 startPos = lbufWidth + (clippedWidth % phraseWidthToPixels[depth]);
824 // If the image is sitting on the line buffer left or right edge, we need to compensate
825 // by decreasing the image phrase width accordingly.
826 iwidth -= phraseClippedWidth;
828 // Also, if we're clipping the phrase we need to make sure we're in the correct part of
830 // data += phraseClippedWidth * (pitch << 3);
831 data += dataClippedWidth * pitch;
833 // NOTE: When the bitmap is in REFLECT mode, the XPOS marks the *right* side of the
834 // bitmap! This makes clipping & etc. MUCH, much easier...!
835 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? leftMargin * 2 : leftMargin * 4);
836 //Why does this work right when multiplying startPos by 2 (instead of 4) for 24 BPP mode?
837 //Is this a bug in the OP?
838 uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 2);
839 uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];
843 // Hmm. We check above for 24 BPP mode, but don't do anything about it below...
844 // If we *were* in 24 BPP mode, how would you convert CRY to RGB24? Seems to me
845 // that if you're in CRY mode then you wouldn't be able to use 24 BPP bitmaps
847 // This seems to be the case (at least according to the Midsummer docs)...!
849 if (depth == 0) // 1 BPP
851 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and or 2 into it.
852 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
854 // Fetch 1st phrase...
855 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
856 //Note that firstPix should only be honored *if* we start with the 1st phrase of the bitmap
857 //i.e., we didn't clip on the margin... !!! FIX !!!
858 pixels <<= firstPix; // Skip first N pixels (N=firstPix)...
859 int i = firstPix; // Start counter at right spot...
865 uint8 bit = pixels >> 63;
866 if (flagTRANS && bit == 0)
871 //Optimize: Set palleteRAM16 to beginning of palette RAM + index*2 and use only [bit] as index...
872 //Won't optimize RMW case though...
873 // This is the *only* correct use of endian-dependent code
874 // (i.e., mem-to-mem direct copying)!
875 *(uint16 *)currentLineBuffer = paletteRAM16[index | bit];
878 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bit) << 1]),
879 *(currentLineBuffer + 1) =
880 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bit) << 1) + 1]);
883 currentLineBuffer += lbufDelta;
887 // Fetch next phrase...
889 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
892 else if (depth == 1) // 2 BPP
895 WriteLog("OP: Fixed bitmap @ 2 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
896 index &= 0xFC; // Top six bits form CLUT index
897 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
898 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
903 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
906 for(int i=0; i<32; i++)
908 uint8 bits = pixels >> 62;
909 // Seems to me that both of these are in the same endian, so we could cast it as
910 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
911 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
912 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
913 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
914 if (flagTRANS && bits == 0)
919 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
922 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
923 *(currentLineBuffer + 1) =
924 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
927 currentLineBuffer += lbufDelta;
932 else if (depth == 2) // 4 BPP
935 WriteLog("OP: Fixed bitmap @ 4 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
936 index &= 0xF0; // Top four bits form CLUT index
937 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
938 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
943 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
946 for(int i=0; i<16; i++)
948 uint8 bits = pixels >> 60;
949 // Seems to me that both of these are in the same endian, so we could cast it as
950 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
951 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
952 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
953 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
954 if (flagTRANS && bits == 0)
959 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
962 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
963 *(currentLineBuffer + 1) =
964 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
967 currentLineBuffer += lbufDelta;
972 else if (depth == 3) // 8 BPP
974 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
975 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
977 // Fetch 1st phrase...
978 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
979 //Note that firstPix should only be honored *if* we start with the 1st phrase of the bitmap
980 //i.e., we didn't clip on the margin... !!! FIX !!!
981 firstPix &= 0x30; // Only top two bits are valid for 8 BPP
982 pixels <<= firstPix; // Skip first N pixels (N=firstPix)...
983 int i = firstPix >> 3; // Start counter at right spot...
989 uint8 bits = pixels >> 56;
990 // Seems to me that both of these are in the same endian, so we could cast it as
991 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
992 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
993 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
994 // No, it isn't because we read the memory in an endian safe way--this *won't* work...
995 if (flagTRANS && bits == 0)
1000 *(uint16 *)currentLineBuffer = paletteRAM16[bits];
1002 *currentLineBuffer =
1003 BLEND_CR(*currentLineBuffer, paletteRAM[bits << 1]),
1004 *(currentLineBuffer + 1) =
1005 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[(bits << 1) + 1]);
1008 currentLineBuffer += lbufDelta;
1012 // Fetch next phrase...
1014 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1017 else if (depth == 4) // 16 BPP
1020 WriteLog("OP: Fixed bitmap @ 16 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
1021 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1022 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1027 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1030 for(int i=0; i<4; i++)
1032 uint8 bitsHi = pixels >> 56, bitsLo = pixels >> 48;
1033 // Seems to me that both of these are in the same endian, so we could cast it as
1034 // uint16 * and do straight across copies (what about 24 bpp? Treat it differently...)
1035 // This only works for the palettized modes (1 - 8 BPP), since we actually have to
1036 // copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
1037 // No, it isn't because we read the memory in an endian safe way--it *won't* work...
1038 if (flagTRANS && (bitsLo | bitsHi) == 0)
1043 *currentLineBuffer = bitsHi,
1044 *(currentLineBuffer + 1) = bitsLo;
1046 *currentLineBuffer =
1047 BLEND_CR(*currentLineBuffer, bitsHi),
1048 *(currentLineBuffer + 1) =
1049 BLEND_Y(*(currentLineBuffer + 1), bitsLo);
1052 currentLineBuffer += lbufDelta;
1057 else if (depth == 5) // 24 BPP
1059 //Looks like Iron Soldier is the only game that uses 24BPP mode...
1060 //There *might* be others...
1061 //WriteLog("OP: Writing 24 BPP bitmap!\n");
1063 WriteLog("OP: Fixed bitmap @ 24 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
1064 // Not sure, but I think RMW only works with 16 BPP and below, and only in CRY mode...
1065 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and OR 4 into it.
1066 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 4) | 0x04;
1071 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1074 for(int i=0; i<2; i++)
1076 // We don't use a 32-bit var here because of endian issues...!
1077 uint8 bits3 = pixels >> 56, bits2 = pixels >> 48,
1078 bits1 = pixels >> 40, bits0 = pixels >> 32;
1080 if (flagTRANS && (bits3 | bits2 | bits1 | bits0) == 0)
1083 *currentLineBuffer = bits3,
1084 *(currentLineBuffer + 1) = bits2,
1085 *(currentLineBuffer + 2) = bits1,
1086 *(currentLineBuffer + 3) = bits0;
1088 currentLineBuffer += lbufDelta;
1096 // Store scaled bitmap in line buffer
1098 void OPProcessScaledBitmap(uint64 p0, uint64 p1, uint64 p2, bool render)
1100 // Need to make sure that when writing that it stays within the line buffer...
1101 // LBUF ($F01800 - $F01D9E) 360 x 32-bit RAM
1102 uint8 depth = (p1 >> 12) & 0x07; // Color depth of image
1103 int32 xpos = ((int16)((p1 << 4) & 0xFFFF)) >> 4;// Image xpos in LBUF
1104 uint32 iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
1105 uint32 data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
1106 //#ifdef OP_DEBUG_BMP
1107 // Prolly should use this... Though not sure exactly how.
1108 //Use the upper bits as an offset into the phrase depending on the BPP. That's how!
1109 uint32 firstPix = (p1 >> 49) & 0x3F;
1110 //This is WEIRD! I'm sure I saw Atari Karts request 8 BPP FIRSTPIX! What happened???
1112 WriteLog("OP: FIRSTPIX != 0! (Scaled BM)\n");
1114 // We can ignore the RELEASE (high order) bit for now--probably forever...!
1115 // uint8 flags = (p1 >> 45) & 0x0F; // REFLECT, RMW, TRANS, RELEASE
1116 //Optimize: break these out to their own BOOL values [DONE]
1117 uint8 flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
1118 bool flagREFLECT = (flags & OPFLAG_REFLECT ? true : false),
1119 flagRMW = (flags & OPFLAG_RMW ? true : false),
1120 flagTRANS = (flags & OPFLAG_TRANS ? true : false);
1121 uint8 index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
1122 uint32 pitch = (p1 >> 15) & 0x07; // Phrase pitch
1124 uint8 * tom_ram_8 = tom_get_ram_pointer();
1125 uint8 * paletteRAM = &tom_ram_8[0x400];
1126 // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct copies--NOT
1127 // for use when using endian-corrected data (i.e., any of the *ReadWord functions!)
1128 uint16 * paletteRAM16 = (uint16 *)paletteRAM;
1130 uint8 hscale = p2 & 0xFF;
1131 // uint8 horizontalRemainder = hscale; // Not sure if it starts full, but seems reasonable [It's not!]
1132 uint8 horizontalRemainder = 0; // Let's try zero! Seems to work! Yay!
1133 int32 scaledWidthInPixels = (iwidth * phraseWidthToPixels[depth] * hscale) >> 5;
1134 uint32 scaledPhrasePixels = (phraseWidthToPixels[depth] * hscale) >> 5;
1136 // WriteLog("bitmap %ix? %ibpp at %i,? firstpix=? data=0x%.8x pitch %i hflipped=%s dwidth=? (linked to ?) RMW=%s Tranparent=%s\n",
1137 // iwidth, op_bitmap_bit_depth[bitdepth], xpos, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), (flags&OPFLAG_RMW ? "yes" : "no"), (flags&OPFLAG_TRANS ? "yes" : "no"));
1139 // Looks like an hscale of zero means don't draw!
1140 if (!render || iwidth == 0 || hscale == 0)
1143 /*extern int start_logging;
1145 WriteLog("OP: Scaled bitmap %ix? %ibpp at %i,? hscale=%02X fpix=%i data=%08X pitch %i hflipped=%s dwidth=? (linked to %08X) Transluency=%s\n",
1146 iwidth, op_bitmap_bit_depth[depth], xpos, hscale, firstPix, data, pitch, (flagREFLECT ? "yes" : "no"), op_pointer, (flagRMW ? "yes" : "no"));*/
1147 //#define OP_DEBUG_BMP
1148 //#ifdef OP_DEBUG_BMP
1149 // WriteLog("OP: Scaled 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",
1150 // 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"));
1153 int32 startPos = xpos, endPos = xpos +
1154 (!flagREFLECT ? scaledWidthInPixels - 1 : -(scaledWidthInPixels + 1));
1155 uint32 clippedWidth = 0, phraseClippedWidth = 0, dataClippedWidth = 0;
1156 bool in24BPPMode = (((GET16(tom_ram_8, 0x0028) >> 1) & 0x03) == 1 ? true : false); // VMODE
1157 // Not sure if this is Jaguar Two only location or what...
1158 // From the docs, it is... If we want to limit here we should think of something else.
1159 // int32 limit = GET16(tom_ram_8, 0x0008); // LIMIT
1161 int32 lbufWidth = (!in24BPPMode ? limit - 1 : (limit / 2) - 1); // Zero based limit...
1163 // If the image is completely to the left or right of the line buffer, then bail.
1164 //If in REFLECT mode, then these values are swapped! !!! FIX !!! [DONE]
1165 //There are four possibilities:
1166 // 1. image sits on left edge and no REFLECT; starts out of bounds but ends in bounds.
1167 // 2. image sits on left edge and REFLECT; starts in bounds but ends out of bounds.
1168 // 3. image sits on right edge and REFLECT; starts out of bounds but ends in bounds.
1169 // 4. image sits on right edge and no REFLECT; starts in bounds but ends out of bounds.
1170 //Numbers 2 & 4 can be caught by checking the LBUF clip while in the inner loop,
1171 // numbers 1 & 3 are of concern.
1172 // This *indirectly* handles only cases 2 & 4! And is WRONG if REFLECT is set...!
1173 // if (rightMargin < 0 || leftMargin > lbufWidth)
1175 // It might be easier to swap these (if REFLECTed) and just use XPOS down below...
1176 // That way, you could simply set XPOS to leftMargin if !REFLECT and to rightMargin otherwise.
1177 // Still have to be careful with the DATA and IWIDTH values though...
1179 if ((!flagREFLECT && (endPos < 0 || startPos > lbufWidth))
1180 || (flagREFLECT && (startPos < 0 || endPos > lbufWidth)))
1183 // Otherwise, find the clip limits and clip the phrase as well...
1184 // NOTE: I'm fudging here by letting the actual blit overstep the bounds of the
1185 // line buffer, but it shouldn't matter since there are two unused line
1186 // buffers below and nothing above and I'll at most write 40 bytes outside
1187 // the line buffer... I could use a fractional clip begin/end value, but
1188 // this makes the blit a *lot* more hairy. I might fix this in the future
1189 // if it becomes necessary. (JLH)
1190 // Probably wouldn't be *that* hairy. Just use a delta that tells the inner loop
1191 // which pixel in the phrase is being written, and quit when either end of phrases
1192 // is reached or line buffer extents are surpassed.
1194 //This stuff is probably wrong as well... !!! FIX !!!
1195 //The strange thing is that it seems to work, but that's no guarantee that it's bulletproof!
1196 //Yup. Seems that JagMania doesn't work correctly with this...
1197 //Dunno if this is the problem, but Atari Karts is showing *some* of the road now...
1198 //Actually, it is! Or, it was. It doesn't seem to be clipping here, so the problem lies
1199 //elsewhere! Hmm. Putting the scaling code into the 1/2/8 BPP cases seems to draw the ground
1200 // a bit more accurately... Strange!
1201 //It's probably a case of the REFLECT flag being set and the background being written
1202 //from the right side of the screen...
1203 //But no, it isn't... At least if the diagnostics are telling the truth!
1205 // NOTE: We're just using endPos to figure out how much, if any, to clip by.
1206 // ALSO: There may be another case where we start out of bounds and end out of bounds...!
1209 //There's a problem here with scaledPhrasePixels in that it can be forced to zero when
1210 //the scaling factor is small. So fix it already! !!! FIX !!!
1211 /*if (scaledPhrasePixels == 0)
1213 WriteLog("OP: [Scaled] We're about to encounter a divide by zero error!\n");
1214 DumpScaledObject(p0, p1, p2);
1216 //NOTE: I'm almost 100% sure that this is wrong... And it is! :-p
1218 //Try a simple example...
1219 // Let's say we have a 8 BPP scanline with an hscale of $80 (4). Our xpos is -10,
1220 // non-flipped. Pixels in the bitmap are XYZXYZXYZXYZXYZ.
1221 // Scaled up, they would be XXXXYYYYZZZZXXXXYYYYZZZZXXXXYYYYZZZZ...
1223 // Normally, we would expect this in the line buffer:
1224 // ZZXXXXYYYYZZZZXXXXYYYYZZZZ...
1226 // But instead we're getting:
1227 // XXXXYYYYZZZZXXXXYYYYZZZZ...
1229 // or are we??? It would seem so, simply by virtue of the fact that we're NOT starting
1230 // on negative boundary--or are we? Hmm...
1231 // cw = 10, dcw = pcw = 10 / ([8 * 4 = 32] 32) = 0, sp = -10
1233 // Let's try a real world example:
1235 //OP: Scaled bitmap (70, 8 BPP, spp=28) sp (-400) < 0... [new sp=-8, cw=400, dcw=pcw=14]
1236 //OP: Scaled bitmap (6F, 8 BPP, spp=27) sp (-395) < 0... [new sp=-17, cw=395, dcw=pcw=14]
1238 // Really, spp is 27.75 in the second case...
1239 // So... If we do 395 / 27.75, we get 14. Ok so far... If we scale that against the
1240 // start position (14 * 27.75), we get -6.5... NOT -17!
1242 //Now it seems we're working OK, at least for the first case...
1243 uint32 scaledPhrasePixelsUS = phraseWidthToPixels[depth] * hscale;
1245 if (startPos < 0) // Case #1: Begin out, end in, L to R
1247 extern int start_logging;
1249 WriteLog("OP: Scaled bitmap (%02X, %u BPP, spp=%u) start pos (%i) < 0...", hscale, op_bitmap_bit_depth[depth], scaledPhrasePixels, startPos);
1250 // clippedWidth = 0 - startPos,
1251 clippedWidth = (0 - startPos) << 5,
1252 // dataClippedWidth = phraseClippedWidth = clippedWidth / scaledPhrasePixels,
1253 dataClippedWidth = phraseClippedWidth = (clippedWidth / scaledPhrasePixelsUS) >> 5,
1254 // startPos = 0 - (clippedWidth % scaledPhrasePixels);
1255 startPos += (dataClippedWidth * scaledPhrasePixelsUS) >> 5;
1257 WriteLog(" [new sp=%i, cw=%i, dcw=pcw=%i]\n", startPos, clippedWidth, dataClippedWidth);
1260 if (endPos < 0) // Case #2: Begin in, end out, R to L
1261 clippedWidth = 0 - endPos,
1262 phraseClippedWidth = clippedWidth / scaledPhrasePixels;
1264 if (endPos > lbufWidth) // Case #3: Begin in, end out, L to R
1265 clippedWidth = endPos - lbufWidth,
1266 phraseClippedWidth = clippedWidth / scaledPhrasePixels;
1268 if (startPos > lbufWidth) // Case #4: Begin out, end in, R to L
1269 clippedWidth = startPos - lbufWidth,
1270 dataClippedWidth = phraseClippedWidth = clippedWidth / scaledPhrasePixels,
1271 startPos = lbufWidth + (clippedWidth % scaledPhrasePixels);
1273 extern int op_start_log;
1274 if (op_start_log && clippedWidth != 0)
1275 WriteLog("OP: Clipped line. SP=%i, EP=%i, clip=%u, iwidth=%u, hscale=%02X\n", startPos, endPos, clippedWidth, iwidth, hscale);
1276 if (op_start_log && startPos == 13)
1278 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);
1279 DumpScaledObject(p0, p1, p2);
1281 // If the image is sitting on the line buffer left or right edge, we need to compensate
1282 // by decreasing the image phrase width accordingly.
1283 iwidth -= phraseClippedWidth;
1285 // Also, if we're clipping the phrase we need to make sure we're in the correct part of
1287 // data += phraseClippedWidth * (pitch << 3);
1288 data += dataClippedWidth * (pitch << 3);
1290 // NOTE: When the bitmap is in REFLECT mode, the XPOS marks the *right* side of the
1291 // bitmap! This makes clipping & etc. MUCH, much easier...!
1292 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? leftMargin * 2 : leftMargin * 4);
1293 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 4);
1294 uint32 lbufAddress = 0x1800 + startPos * 2;
1295 uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];
1296 uint8 * lineBufferLowerLimit = &tom_ram_8[0x1800],
1297 * lineBufferUpperLimit = &tom_ram_8[0x1800 + 719];
1301 // Hmm. We check above for 24 BPP mode, but don't do anything about it below...
1302 // If we *were* in 24 BPP mode, how would you convert CRY to RGB24? Seems to me
1303 // that if you're in CRY mode then you wouldn't be able to use 24 BPP bitmaps
1305 // This seems to be the case (at least according to the Midsummer docs)...!
1307 if (depth == 0) // 1 BPP
1310 WriteLog("OP: Scaled bitmap @ 1 BPP requesting FIRSTPIX!\n");
1311 // The LSB of flags is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1312 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1315 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1317 while ((int32)iwidth > 0)
1319 uint8 bits = pixels >> 63;
1321 if (flagTRANS && bits == 0)
1326 // This is the *only* correct use of endian-dependent code
1327 // (i.e., mem-to-mem direct copying)!
1328 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1330 *currentLineBuffer =
1331 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1332 *(currentLineBuffer + 1) =
1333 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1336 currentLineBuffer += lbufDelta;
1338 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1339 while (horizontalRemainder & 0x80)
1341 horizontalRemainder += hscale;
1348 int phrasesToSkip = pixCount / 64, pixelShift = pixCount % 64;
1350 data += (pitch << 3) * phrasesToSkip;
1351 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1352 pixels <<= 1 * pixelShift;
1353 iwidth -= phrasesToSkip;
1354 pixCount = pixelShift;
1358 else if (depth == 1) // 2 BPP
1361 WriteLog("OP: Scaled bitmap @ 2 BPP requesting FIRSTPIX!\n");
1362 index &= 0xFC; // Top six bits form CLUT index
1363 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1364 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1367 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1369 while ((int32)iwidth > 0)
1371 uint8 bits = pixels >> 62;
1373 if (flagTRANS && bits == 0)
1378 // This is the *only* correct use of endian-dependent code
1379 // (i.e., mem-to-mem direct copying)!
1380 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1382 *currentLineBuffer =
1383 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1384 *(currentLineBuffer + 1) =
1385 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1388 currentLineBuffer += lbufDelta;
1390 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1391 while (horizontalRemainder & 0x80)
1393 horizontalRemainder += hscale;
1400 int phrasesToSkip = pixCount / 32, pixelShift = pixCount % 32;
1402 data += (pitch << 3) * phrasesToSkip;
1403 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1404 pixels <<= 2 * pixelShift;
1405 iwidth -= phrasesToSkip;
1406 pixCount = pixelShift;
1410 else if (depth == 2) // 4 BPP
1413 WriteLog("OP: Scaled bitmap @ 4 BPP requesting FIRSTPIX!\n");
1414 index &= 0xF0; // Top four bits form CLUT index
1415 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1416 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1419 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1421 while ((int32)iwidth > 0)
1423 uint8 bits = pixels >> 60;
1425 if (flagTRANS && bits == 0)
1430 // This is the *only* correct use of endian-dependent code
1431 // (i.e., mem-to-mem direct copying)!
1432 *(uint16 *)currentLineBuffer = paletteRAM16[index | bits];
1434 *currentLineBuffer =
1435 BLEND_CR(*currentLineBuffer, paletteRAM[(index | bits) << 1]),
1436 *(currentLineBuffer + 1) =
1437 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[((index | bits) << 1) + 1]);
1440 currentLineBuffer += lbufDelta;
1442 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1443 while (horizontalRemainder & 0x80)
1445 horizontalRemainder += hscale;
1452 int phrasesToSkip = pixCount / 16, pixelShift = pixCount % 16;
1454 data += (pitch << 3) * phrasesToSkip;
1455 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1456 pixels <<= 4 * pixelShift;
1457 iwidth -= phrasesToSkip;
1458 pixCount = pixelShift;
1462 else if (depth == 3) // 8 BPP
1465 WriteLog("OP: Scaled bitmap @ 8 BPP requesting FIRSTPIX! (fp=%u)\n", firstPix);
1466 // The LSB is OPFLAG_REFLECT, so sign extend it and or 2 into it.
1467 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1470 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1472 while ((int32)iwidth > 0)
1474 uint8 bits = pixels >> 56;
1476 if (flagTRANS && bits == 0)
1481 // This is the *only* correct use of endian-dependent code
1482 // (i.e., mem-to-mem direct copying)!
1483 *(uint16 *)currentLineBuffer = paletteRAM16[bits];
1485 if (currentLineBuffer >= lineBufferLowerLimit && currentLineBuffer <= lineBufferUpperLimit)
1486 *(uint16 *)currentLineBuffer = paletteRAM16[bits];
1489 *currentLineBuffer =
1490 BLEND_CR(*currentLineBuffer, paletteRAM[bits << 1]),
1491 *(currentLineBuffer + 1) =
1492 BLEND_Y(*(currentLineBuffer + 1), paletteRAM[(bits << 1) + 1]);
1495 currentLineBuffer += lbufDelta;
1497 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1498 while (horizontalRemainder & 0x80)
1500 horizontalRemainder += hscale;
1507 int phrasesToSkip = pixCount / 8, pixelShift = pixCount % 8;
1509 data += (pitch << 3) * phrasesToSkip;
1510 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1511 pixels <<= 8 * pixelShift;
1512 iwidth -= phrasesToSkip;
1513 pixCount = pixelShift;
1517 else if (depth == 4) // 16 BPP
1520 WriteLog("OP: Scaled bitmap @ 16 BPP requesting FIRSTPIX!\n");
1521 // The LSB is OPFLAG_REFLECT, so sign extend it and OR 2 into it.
1522 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 5) | 0x02;
1525 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1527 while ((int32)iwidth > 0)
1529 uint8 bitsHi = pixels >> 56, bitsLo = pixels >> 48;
1531 if (flagTRANS && (bitsLo | bitsHi) == 0)
1536 *currentLineBuffer = bitsHi,
1537 *(currentLineBuffer + 1) = bitsLo;
1539 *currentLineBuffer =
1540 BLEND_CR(*currentLineBuffer, bitsHi),
1541 *(currentLineBuffer + 1) =
1542 BLEND_Y(*(currentLineBuffer + 1), bitsLo);
1545 currentLineBuffer += lbufDelta;
1547 horizontalRemainder -= 0x20; // Subtract 1.0f in [3.5] fixed point format
1548 while (horizontalRemainder & 0x80)
1550 horizontalRemainder += hscale;
1557 int phrasesToSkip = pixCount / 4, pixelShift = pixCount % 4;
1559 data += (pitch << 3) * phrasesToSkip;
1560 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1561 pixels <<= 16 * pixelShift;
1563 iwidth -= phrasesToSkip;
1565 pixCount = pixelShift;
1569 else if (depth == 5) // 24 BPP
1571 //I'm not sure that you can scale a 24 BPP bitmap properly--the JTRM seem to indicate as much.
1572 WriteLog("OP: Writing 24 BPP scaled bitmap!\n");
1574 WriteLog("OP: Scaled bitmap @ 24 BPP requesting FIRSTPIX!\n");
1575 // Not sure, but I think RMW only works with 16 BPP and below, and only in CRY mode...
1576 // The LSB is OPFLAG_REFLECT, so sign extend it and or 4 into it.
1577 int32 lbufDelta = ((int8)((flags << 7) & 0xFF) >> 4) | 0x04;
1582 uint64 pixels = ((uint64)JaguarReadLong(data, OP) << 32) | JaguarReadLong(data + 4, OP);
1583 data += pitch << 3; // Multiply pitch * 8 (optimize: precompute this value)
1585 for(int i=0; i<2; i++)
1587 uint8 bits3 = pixels >> 56, bits2 = pixels >> 48,
1588 bits1 = pixels >> 40, bits0 = pixels >> 32;
1590 if (flagTRANS && (bits3 | bits2 | bits1 | bits0) == 0)
1593 *currentLineBuffer = bits3,
1594 *(currentLineBuffer + 1) = bits2,
1595 *(currentLineBuffer + 2) = bits1,
1596 *(currentLineBuffer + 3) = bits0;
1598 currentLineBuffer += lbufDelta;
1603 /*if (depth == 3 && startPos == 13)
1606 WriteLog("OP: Writing in the margins...\n");
1607 for(int i=0; i<100*2; i+=2)
1608 // for(int i=0; i<14*2; i+=2)
1609 tom_ram_8[0x1800 + i] = 0xFF,
1610 tom_ram_8[0x1800 + i + 1] = 0xFF;
1612 // uint32 lbufAddress = 0x1800 + (!in24BPPMode ? startPos * 2 : startPos * 4);
1613 // uint8 * currentLineBuffer = &tom_ram_8[lbufAddress];