Mercurial > vba-linux

annotate src/gba/Mode0.cpp @ 19:5e8e5083da94

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
brought in common and gba, fixed problems with outdated Makefile.am files in both of these packages
author Robert McIntyre <rlm@mit.edu>
date Sun, 04 Mar 2012 14:33:52 -0600
parents f9f4f1b99eed
children
rev   line source
rlm@1 1 #include "GBAGfx.h"
rlm@1 2 #include "GBAGlobals.h"
rlm@1 3
rlm@1 4 void mode0RenderLine()
rlm@1 5 {
rlm@1 6 u16 *palette = (u16 *)paletteRAM;
rlm@1 7
rlm@1 8 if (DISPCNT & 0x80)
rlm@1 9 {
rlm@1 10 for (int x = 0; x < 240; x++)
rlm@1 11 {
rlm@1 12 lineMix[x] = 0x7fff;
rlm@1 13 }
rlm@1 14 return;
rlm@1 15 }
rlm@1 16
rlm@1 17 if (layerEnable & 0x0100)
rlm@1 18 {
rlm@1 19 gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);
rlm@1 20 }
rlm@1 21
rlm@1 22 if (layerEnable & 0x0200)
rlm@1 23 {
rlm@1 24 gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);
rlm@1 25 }
rlm@1 26
rlm@1 27 if (layerEnable & 0x0400)
rlm@1 28 {
rlm@1 29 gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);
rlm@1 30 }
rlm@1 31
rlm@1 32 if (layerEnable & 0x0800)
rlm@1 33 {
rlm@1 34 gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);
rlm@1 35 }
rlm@1 36
rlm@1 37 gfxDrawSprites(lineOBJ);
rlm@1 38
rlm@1 39 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);
rlm@1 40
rlm@1 41 for (int x = 0; x < 240; x++)
rlm@1 42 {
rlm@1 43 u32 color = backdrop;
rlm@1 44 u8 top = 0x20;
rlm@1 45
rlm@1 46 if (line0[x] < color)
rlm@1 47 {
rlm@1 48 color = line0[x];
rlm@1 49 top = 0x01;
rlm@1 50 }
rlm@1 51
rlm@1 52 if ((u8)(line1[x]>>24) < (u8)(color >> 24))
rlm@1 53 {
rlm@1 54 color = line1[x];
rlm@1 55 top = 0x02;
rlm@1 56 }
rlm@1 57
rlm@1 58 if ((u8)(line2[x]>>24) < (u8)(color >> 24))
rlm@1 59 {
rlm@1 60 color = line2[x];
rlm@1 61 top = 0x04;
rlm@1 62 }
rlm@1 63
rlm@1 64 if ((u8)(line3[x]>>24) < (u8)(color >> 24))
rlm@1 65 {
rlm@1 66 color = line3[x];
rlm@1 67 top = 0x08;
rlm@1 68 }
rlm@1 69
rlm@1 70 if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))
rlm@1 71 {
rlm@1 72 color = lineOBJ[x];
rlm@1 73 top = 0x10;
rlm@1 74 }
rlm@1 75
rlm@1 76 if ((top & 0x10) && (color & 0x00010000))
rlm@1 77 {
rlm@1 78 // semi-transparent OBJ
rlm@1 79 u32 back = backdrop;
rlm@1 80 u8 top2 = 0x20;
rlm@1 81
rlm@1 82 if ((u8)(line0[x]>>24) < (u8)(back >> 24))
rlm@1 83 {
rlm@1 84 back = line0[x];
rlm@1 85 top2 = 0x01;
rlm@1 86 }
rlm@1 87
rlm@1 88 if ((u8)(line1[x]>>24) < (u8)(back >> 24))
rlm@1 89 {
rlm@1 90 back = line1[x];
rlm@1 91 top2 = 0x02;
rlm@1 92 }
rlm@1 93
rlm@1 94 if ((u8)(line2[x]>>24) < (u8)(back >> 24))
rlm@1 95 {
rlm@1 96 back = line2[x];
rlm@1 97 top2 = 0x04;
rlm@1 98 }
rlm@1 99
rlm@1 100 if ((u8)(line3[x]>>24) < (u8)(back >> 24))
rlm@1 101 {
rlm@1 102 back = line3[x];
rlm@1 103 top2 = 0x08;
rlm@1 104 }
rlm@1 105
rlm@1 106 if (top2 & (BLDMOD>>8))
rlm@1 107 color = gfxAlphaBlend(color, back,
rlm@1 108 coeff[COLEV & 0x1F],
rlm@1 109 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 110 else
rlm@1 111 {
rlm@1 112 switch ((BLDMOD >> 6) & 3)
rlm@1 113 {
rlm@1 114 case 2:
rlm@1 115 if (BLDMOD & top)
rlm@1 116 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 117 break;
rlm@1 118 case 3:
rlm@1 119 if (BLDMOD & top)
rlm@1 120 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 121 break;
rlm@1 122 }
rlm@1 123 }
rlm@1 124 }
rlm@1 125
rlm@1 126 lineMix[x] = color;
rlm@1 127 }
rlm@1 128 }
rlm@1 129
rlm@1 130 void mode0RenderLineNoWindow()
rlm@1 131 {
rlm@1 132 u16 *palette = (u16 *)paletteRAM;
rlm@1 133
rlm@1 134 if (DISPCNT & 0x80)
rlm@1 135 {
rlm@1 136 for (int x = 0; x < 240; x++)
rlm@1 137 {
rlm@1 138 lineMix[x] = 0x7fff;
rlm@1 139 }
rlm@1 140 return;
rlm@1 141 }
rlm@1 142
rlm@1 143 if (layerEnable & 0x0100)
rlm@1 144 {
rlm@1 145 gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);
rlm@1 146 }
rlm@1 147
rlm@1 148 if (layerEnable & 0x0200)
rlm@1 149 {
rlm@1 150 gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);
rlm@1 151 }
rlm@1 152
rlm@1 153 if (layerEnable & 0x0400)
rlm@1 154 {
rlm@1 155 gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);
rlm@1 156 }
rlm@1 157
rlm@1 158 if (layerEnable & 0x0800)
rlm@1 159 {
rlm@1 160 gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);
rlm@1 161 }
rlm@1 162
rlm@1 163 gfxDrawSprites(lineOBJ);
rlm@1 164
rlm@1 165 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);
rlm@1 166
rlm@1 167 int effect = (BLDMOD >> 6) & 3;
rlm@1 168
rlm@1 169 for (int x = 0; x < 240; x++)
rlm@1 170 {
rlm@1 171 u32 color = backdrop;
rlm@1 172 u8 top = 0x20;
rlm@1 173
rlm@1 174 if (line0[x] < color)
rlm@1 175 {
rlm@1 176 color = line0[x];
rlm@1 177 top = 0x01;
rlm@1 178 }
rlm@1 179
rlm@1 180 if (line1[x] < (color & 0xFF000000))
rlm@1 181 {
rlm@1 182 color = line1[x];
rlm@1 183 top = 0x02;
rlm@1 184 }
rlm@1 185
rlm@1 186 if (line2[x] < (color & 0xFF000000))
rlm@1 187 {
rlm@1 188 color = line2[x];
rlm@1 189 top = 0x04;
rlm@1 190 }
rlm@1 191
rlm@1 192 if (line3[x] < (color & 0xFF000000))
rlm@1 193 {
rlm@1 194 color = line3[x];
rlm@1 195 top = 0x08;
rlm@1 196 }
rlm@1 197
rlm@1 198 if (lineOBJ[x] < (color & 0xFF000000))
rlm@1 199 {
rlm@1 200 color = lineOBJ[x];
rlm@1 201 top = 0x10;
rlm@1 202 }
rlm@1 203
rlm@1 204 if (!(color & 0x00010000))
rlm@1 205 {
rlm@1 206 switch (effect)
rlm@1 207 {
rlm@1 208 case 0:
rlm@1 209 break;
rlm@1 210 case 1:
rlm@1 211 {
rlm@1 212 if (top & BLDMOD)
rlm@1 213 {
rlm@1 214 u32 back = backdrop;
rlm@1 215 u8 top2 = 0x20;
rlm@1 216 if (line0[x] < back)
rlm@1 217 {
rlm@1 218 if (top != 0x01)
rlm@1 219 {
rlm@1 220 back = line0[x];
rlm@1 221 top2 = 0x01;
rlm@1 222 }
rlm@1 223 }
rlm@1 224
rlm@1 225 if (line1[x] < (back & 0xFF000000))
rlm@1 226 {
rlm@1 227 if (top != 0x02)
rlm@1 228 {
rlm@1 229 back = line1[x];
rlm@1 230 top2 = 0x02;
rlm@1 231 }
rlm@1 232 }
rlm@1 233
rlm@1 234 if (line2[x] < (back & 0xFF000000))
rlm@1 235 {
rlm@1 236 if (top != 0x04)
rlm@1 237 {
rlm@1 238 back = line2[x];
rlm@1 239 top2 = 0x04;
rlm@1 240 }
rlm@1 241 }
rlm@1 242
rlm@1 243 if (line3[x] < (back & 0xFF000000))
rlm@1 244 {
rlm@1 245 if (top != 0x08)
rlm@1 246 {
rlm@1 247 back = line3[x];
rlm@1 248 top2 = 0x08;
rlm@1 249 }
rlm@1 250 }
rlm@1 251
rlm@1 252 if (lineOBJ[x] < (back & 0xFF000000))
rlm@1 253 {
rlm@1 254 if (top != 0x10)
rlm@1 255 {
rlm@1 256 back = lineOBJ[x];
rlm@1 257 top2 = 0x10;
rlm@1 258 }
rlm@1 259 }
rlm@1 260
rlm@1 261 if (top2 & (BLDMOD>>8))
rlm@1 262 color = gfxAlphaBlend(color, back,
rlm@1 263 coeff[COLEV & 0x1F],
rlm@1 264 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 265 }
rlm@1 266 break;
rlm@1 267 }
rlm@1 268 case 2:
rlm@1 269 if (BLDMOD & top)
rlm@1 270 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 271 break;
rlm@1 272 case 3:
rlm@1 273 if (BLDMOD & top)
rlm@1 274 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 275 break;
rlm@1 276 }
rlm@1 277 }
rlm@1 278 else
rlm@1 279 {
rlm@1 280 // semi-transparent OBJ
rlm@1 281 u32 back = backdrop;
rlm@1 282 u8 top2 = 0x20;
rlm@1 283
rlm@1 284 if (line0[x] < back)
rlm@1 285 {
rlm@1 286 back = line0[x];
rlm@1 287 top2 = 0x01;
rlm@1 288 }
rlm@1 289
rlm@1 290 if (line1[x] < (back & 0xFF000000))
rlm@1 291 {
rlm@1 292 back = line1[x];
rlm@1 293 top2 = 0x02;
rlm@1 294 }
rlm@1 295
rlm@1 296 if (line2[x] < (back & 0xFF000000))
rlm@1 297 {
rlm@1 298 back = line2[x];
rlm@1 299 top2 = 0x04;
rlm@1 300 }
rlm@1 301
rlm@1 302 if (line3[x] < (back & 0xFF000000))
rlm@1 303 {
rlm@1 304 back = line3[x];
rlm@1 305 top2 = 0x08;
rlm@1 306 }
rlm@1 307
rlm@1 308 if (top2 & (BLDMOD>>8))
rlm@1 309 color = gfxAlphaBlend(color, back,
rlm@1 310 coeff[COLEV & 0x1F],
rlm@1 311 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 312 else
rlm@1 313 {
rlm@1 314 switch ((BLDMOD >> 6) & 3)
rlm@1 315 {
rlm@1 316 case 2:
rlm@1 317 if (BLDMOD & top)
rlm@1 318 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 319 break;
rlm@1 320 case 3:
rlm@1 321 if (BLDMOD & top)
rlm@1 322 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 323 break;
rlm@1 324 }
rlm@1 325 }
rlm@1 326 }
rlm@1 327
rlm@1 328 lineMix[x] = color;
rlm@1 329 }
rlm@1 330 }
rlm@1 331
rlm@1 332 void mode0RenderLineAll()
rlm@1 333 {
rlm@1 334 u16 *palette = (u16 *)paletteRAM;
rlm@1 335
rlm@1 336 if (DISPCNT & 0x80)
rlm@1 337 {
rlm@1 338 for (int x = 0; x < 240; x++)
rlm@1 339 {
rlm@1 340 lineMix[x] = 0x7fff;
rlm@1 341 }
rlm@1 342 return;
rlm@1 343 }
rlm@1 344
rlm@1 345 bool inWindow0 = false;
rlm@1 346 bool inWindow1 = false;
rlm@1 347
rlm@1 348 if (layerEnable & 0x2000)
rlm@1 349 {
rlm@1 350 u8 v0 = WIN0V >> 8;
rlm@1 351 u8 v1 = WIN0V & 255;
rlm@1 352 inWindow0 = ((v0 == v1) && (v0 >= 0xe8));
rlm@1 353 if (v1 >= v0)
rlm@1 354 inWindow0 |= (VCOUNT >= v0 && VCOUNT < v1);
rlm@1 355 else
rlm@1 356 inWindow0 |= (VCOUNT >= v0 || VCOUNT < v1);
rlm@1 357 }
rlm@1 358 if (layerEnable & 0x4000)
rlm@1 359 {
rlm@1 360 u8 v0 = WIN1V >> 8;
rlm@1 361 u8 v1 = WIN1V & 255;
rlm@1 362 inWindow1 = ((v0 == v1) && (v0 >= 0xe8));
rlm@1 363 if (v1 >= v0)
rlm@1 364 inWindow1 |= (VCOUNT >= v0 && VCOUNT < v1);
rlm@1 365 else
rlm@1 366 inWindow1 |= (VCOUNT >= v0 || VCOUNT < v1);
rlm@1 367 }
rlm@1 368
rlm@1 369 if ((layerEnable & 0x0100))
rlm@1 370 {
rlm@1 371 gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);
rlm@1 372 }
rlm@1 373
rlm@1 374 if ((layerEnable & 0x0200))
rlm@1 375 {
rlm@1 376 gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);
rlm@1 377 }
rlm@1 378
rlm@1 379 if ((layerEnable & 0x0400))
rlm@1 380 {
rlm@1 381 gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);
rlm@1 382 }
rlm@1 383
rlm@1 384 if ((layerEnable & 0x0800))
rlm@1 385 {
rlm@1 386 gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);
rlm@1 387 }
rlm@1 388
rlm@1 389 gfxDrawSprites(lineOBJ);
rlm@1 390 gfxDrawOBJWin(lineOBJWin);
rlm@1 391
rlm@1 392 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);
rlm@1 393
rlm@1 394 u8 inWin0Mask = WININ & 0xFF;
rlm@1 395 u8 inWin1Mask = WININ >> 8;
rlm@1 396 u8 outMask = WINOUT & 0xFF;
rlm@1 397
rlm@1 398 for (int x = 0; x < 240; x++)
rlm@1 399 {
rlm@1 400 u32 color = backdrop;
rlm@1 401 u8 top = 0x20;
rlm@1 402 u8 mask = outMask;
rlm@1 403
rlm@1 404 if (!(lineOBJWin[x] & 0x80000000))
rlm@1 405 {
rlm@1 406 mask = WINOUT >> 8;
rlm@1 407 }
rlm@1 408
rlm@1 409 if (inWindow1)
rlm@1 410 {
rlm@1 411 if (gfxInWin1[x])
rlm@1 412 mask = inWin1Mask;
rlm@1 413 }
rlm@1 414
rlm@1 415 if (inWindow0)
rlm@1 416 {
rlm@1 417 if (gfxInWin0[x])
rlm@1 418 {
rlm@1 419 mask = inWin0Mask;
rlm@1 420 }
rlm@1 421 }
rlm@1 422
rlm@1 423 if ((mask & 1) && (line0[x] < color))
rlm@1 424 {
rlm@1 425 color = line0[x];
rlm@1 426 top = 0x01;
rlm@1 427 }
rlm@1 428
rlm@1 429 if ((mask & 2) && ((u8)(line1[x]>>24) < (u8)(color >> 24)))
rlm@1 430 {
rlm@1 431 color = line1[x];
rlm@1 432 top = 0x02;
rlm@1 433 }
rlm@1 434
rlm@1 435 if ((mask & 4) && ((u8)(line2[x]>>24) < (u8)(color >> 24)))
rlm@1 436 {
rlm@1 437 color = line2[x];
rlm@1 438 top = 0x04;
rlm@1 439 }
rlm@1 440
rlm@1 441 if ((mask & 8) && ((u8)(line3[x]>>24) < (u8)(color >> 24)))
rlm@1 442 {
rlm@1 443 color = line3[x];
rlm@1 444 top = 0x08;
rlm@1 445 }
rlm@1 446
rlm@1 447 if ((mask & 16) && ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24)))
rlm@1 448 {
rlm@1 449 color = lineOBJ[x];
rlm@1 450 top = 0x10;
rlm@1 451 }
rlm@1 452
rlm@1 453 // special FX on in the window
rlm@1 454 if (mask & 32)
rlm@1 455 {
rlm@1 456 if (!(color & 0x00010000))
rlm@1 457 {
rlm@1 458 switch ((BLDMOD >> 6) & 3)
rlm@1 459 {
rlm@1 460 case 0:
rlm@1 461 break;
rlm@1 462 case 1:
rlm@1 463 {
rlm@1 464 if (top & BLDMOD)
rlm@1 465 {
rlm@1 466 u32 back = backdrop;
rlm@1 467 u8 top2 = 0x20;
rlm@1 468 if ((mask & 1) && (u8)(line0[x]>>24) < (u8)(back >> 24))
rlm@1 469 {
rlm@1 470 if (top != 0x01)
rlm@1 471 {
rlm@1 472 back = line0[x];
rlm@1 473 top2 = 0x01;
rlm@1 474 }
rlm@1 475 }
rlm@1 476
rlm@1 477 if ((mask & 2) && (u8)(line1[x]>>24) < (u8)(back >> 24))
rlm@1 478 {
rlm@1 479 if (top != 0x02)
rlm@1 480 {
rlm@1 481 back = line1[x];
rlm@1 482 top2 = 0x02;
rlm@1 483 }
rlm@1 484 }
rlm@1 485
rlm@1 486 if ((mask & 4) && (u8)(line2[x]>>24) < (u8)(back >> 24))
rlm@1 487 {
rlm@1 488 if (top != 0x04)
rlm@1 489 {
rlm@1 490 back = line2[x];
rlm@1 491 top2 = 0x04;
rlm@1 492 }
rlm@1 493 }
rlm@1 494
rlm@1 495 if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))
rlm@1 496 {
rlm@1 497 if (top != 0x08)
rlm@1 498 {
rlm@1 499 back = line3[x];
rlm@1 500 top2 = 0x08;
rlm@1 501 }
rlm@1 502 }
rlm@1 503
rlm@1 504 if ((mask & 16) && (u8)(lineOBJ[x]>>24) < (u8)(back >> 24))
rlm@1 505 {
rlm@1 506 if (top != 0x10)
rlm@1 507 {
rlm@1 508 back = lineOBJ[x];
rlm@1 509 top2 = 0x10;
rlm@1 510 }
rlm@1 511 }
rlm@1 512
rlm@1 513 if (top2 & (BLDMOD>>8))
rlm@1 514 color = gfxAlphaBlend(color, back,
rlm@1 515 coeff[COLEV & 0x1F],
rlm@1 516 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 517 }
rlm@1 518 break;
rlm@1 519 }
rlm@1 520 case 2:
rlm@1 521 if (BLDMOD & top)
rlm@1 522 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 523 break;
rlm@1 524 case 3:
rlm@1 525 if (BLDMOD & top)
rlm@1 526 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 527 break;
rlm@1 528 }
rlm@1 529 }
rlm@1 530 else
rlm@1 531 {
rlm@1 532 // semi-transparent OBJ
rlm@1 533 u32 back = backdrop;
rlm@1 534 u8 top2 = 0x20;
rlm@1 535
rlm@1 536 if ((mask & 1) && ((u8)(line0[x]>>24) < (u8)(back >> 24)))
rlm@1 537 {
rlm@1 538 back = line0[x];
rlm@1 539 top2 = 0x01;
rlm@1 540 }
rlm@1 541
rlm@1 542 if ((mask & 2) && ((u8)(line1[x]>>24) < (u8)(back >> 24)))
rlm@1 543 {
rlm@1 544 back = line1[x];
rlm@1 545 top2 = 0x02;
rlm@1 546 }
rlm@1 547
rlm@1 548 if ((mask & 4) && ((u8)(line2[x]>>24) < (u8)(back >> 24)))
rlm@1 549 {
rlm@1 550 back = line2[x];
rlm@1 551 top2 = 0x04;
rlm@1 552 }
rlm@1 553
rlm@1 554 if ((mask & 8) && ((u8)(line3[x]>>24) < (u8)(back >> 24)))
rlm@1 555 {
rlm@1 556 back = line3[x];
rlm@1 557 top2 = 0x08;
rlm@1 558 }
rlm@1 559
rlm@1 560 if (top2 & (BLDMOD>>8))
rlm@1 561 color = gfxAlphaBlend(color, back,
rlm@1 562 coeff[COLEV & 0x1F],
rlm@1 563 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 564 else
rlm@1 565 {
rlm@1 566 switch ((BLDMOD >> 6) & 3)
rlm@1 567 {
rlm@1 568 case 2:
rlm@1 569 if (BLDMOD & top)
rlm@1 570 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 571 break;
rlm@1 572 case 3:
rlm@1 573 if (BLDMOD & top)
rlm@1 574 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 575 break;
rlm@1 576 }
rlm@1 577 }
rlm@1 578 }
rlm@1 579 }
rlm@1 580 else if (color & 0x00010000)
rlm@1 581 {
rlm@1 582 // semi-transparent OBJ
rlm@1 583 u32 back = backdrop;
rlm@1 584 u8 top2 = 0x20;
rlm@1 585
rlm@1 586 if ((mask & 1) && ((u8)(line0[x]>>24) < (u8)(back >> 24)))
rlm@1 587 {
rlm@1 588 back = line0[x];
rlm@1 589 top2 = 0x01;
rlm@1 590 }
rlm@1 591
rlm@1 592 if ((mask & 2) && ((u8)(line1[x]>>24) < (u8)(back >> 24)))
rlm@1 593 {
rlm@1 594 back = line1[x];
rlm@1 595 top2 = 0x02;
rlm@1 596 }
rlm@1 597
rlm@1 598 if ((mask & 4) && ((u8)(line2[x]>>24) < (u8)(back >> 24)))
rlm@1 599 {
rlm@1 600 back = line2[x];
rlm@1 601 top2 = 0x04;
rlm@1 602 }
rlm@1 603
rlm@1 604 if ((mask & 8) && ((u8)(line3[x]>>24) < (u8)(back >> 24)))
rlm@1 605 {
rlm@1 606 back = line3[x];
rlm@1 607 top2 = 0x08;
rlm@1 608 }
rlm@1 609
rlm@1 610 if (top2 & (BLDMOD>>8))
rlm@1 611 color = gfxAlphaBlend(color, back,
rlm@1 612 coeff[COLEV & 0x1F],
rlm@1 613 coeff[(COLEV >> 8) & 0x1F]);
rlm@1 614 else
rlm@1 615 {
rlm@1 616 switch ((BLDMOD >> 6) & 3)
rlm@1 617 {
rlm@1 618 case 2:
rlm@1 619 if (BLDMOD & top)
rlm@1 620 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 621 break;
rlm@1 622 case 3:
rlm@1 623 if (BLDMOD & top)
rlm@1 624 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);
rlm@1 625 break;
rlm@1 626 }
rlm@1 627 }
rlm@1 628 }
rlm@1 629
rlm@1 630 lineMix[x] = color;
rlm@1 631 }
rlm@1 632 }
rlm@1 633