Mercurial > vba-clojure
view src/gba/Mode2.cpp @ 270:49096b8b99d5
script: delivered oak's parcel; got pokedex.
author | Robert McIntyre <rlm@mit.edu> |
---|---|
date | Mon, 26 Mar 2012 23:54:52 -0500 |
parents | f9f4f1b99eed |
children |
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1 #include "GBAGfx.h"2 #include "GBAGlobals.h"4 void mode2RenderLine()5 {6 u16 *palette = (u16 *)paletteRAM;8 if (DISPCNT & 0x80)9 {10 for (int x = 0; x < 240; x++)11 {12 lineMix[x] = 0x7fff;13 }14 gfxLastVCOUNT = VCOUNT;15 return;16 }18 if (layerEnable & 0x0400)19 {20 int changed = gfxBG2Changed;21 if (gfxLastVCOUNT > VCOUNT)22 changed = 3;24 gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,25 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,26 changed, line2);27 }29 if (layerEnable & 0x0800)30 {31 int changed = gfxBG3Changed;32 if (gfxLastVCOUNT > VCOUNT)33 changed = 3;35 gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,36 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,37 changed, line3);38 }40 gfxDrawSprites(lineOBJ);42 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);44 for (int x = 0; x < 240; x++)45 {46 u32 color = backdrop;47 u8 top = 0x20;49 if ((u8)(line2[x]>>24) < (u8)(color >> 24))50 {51 color = line2[x];52 top = 0x04;53 }55 if ((u8)(line3[x]>>24) < (u8)(color >> 24))56 {57 color = line3[x];58 top = 0x08;59 }61 if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))62 {63 color = lineOBJ[x];64 top = 0x10;65 }67 if ((top & 0x10) && (color & 0x00010000))68 {69 // semi-transparent OBJ70 u32 back = backdrop;71 u8 top2 = 0x20;73 if ((u8)(line2[x]>>24) < (u8)(back >> 24))74 {75 back = line2[x];76 top2 = 0x04;77 }79 if ((u8)(line3[x]>>24) < (u8)(back >> 24))80 {81 back = line3[x];82 top2 = 0x08;83 }85 if (top2 & (BLDMOD>>8))86 color = gfxAlphaBlend(color, back,87 coeff[COLEV & 0x1F],88 coeff[(COLEV >> 8) & 0x1F]);89 else90 {91 switch ((BLDMOD >> 6) & 3)92 {93 case 2:94 if (BLDMOD & top)95 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);96 break;97 case 3:98 if (BLDMOD & top)99 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);100 break;101 }102 }103 }105 lineMix[x] = color;106 }107 gfxBG2Changed = 0;108 gfxBG3Changed = 0;109 gfxLastVCOUNT = VCOUNT;110 }112 void mode2RenderLineNoWindow()113 {114 u16 *palette = (u16 *)paletteRAM;116 if (DISPCNT & 0x80)117 {118 for (int x = 0; x < 240; x++)119 {120 lineMix[x] = 0x7fff;121 }122 gfxLastVCOUNT = VCOUNT;123 return;124 }126 if (layerEnable & 0x0400)127 {128 int changed = gfxBG2Changed;129 if (gfxLastVCOUNT > VCOUNT)130 changed = 3;132 gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,133 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,134 changed, line2);135 }137 if (layerEnable & 0x0800)138 {139 int changed = gfxBG3Changed;140 if (gfxLastVCOUNT > VCOUNT)141 changed = 3;143 gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,144 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,145 changed, line3);146 }148 gfxDrawSprites(lineOBJ);150 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);152 for (int x = 0; x < 240; x++)153 {154 u32 color = backdrop;155 u8 top = 0x20;157 if ((u8)(line2[x]>>24) < (u8)(color >> 24))158 {159 color = line2[x];160 top = 0x04;161 }163 if ((u8)(line3[x]>>24) < (u8)(color >> 24))164 {165 color = line3[x];166 top = 0x08;167 }169 if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))170 {171 color = lineOBJ[x];172 top = 0x10;173 }175 if (!(color & 0x00010000))176 {177 switch ((BLDMOD >> 6) & 3)178 {179 case 0:180 break;181 case 1:182 {183 if (top & BLDMOD)184 {185 u32 back = backdrop;186 u8 top2 = 0x20;188 if ((u8)(line2[x]>>24) < (u8)(back >> 24))189 {190 if (top != 0x04)191 {192 back = line2[x];193 top2 = 0x04;194 }195 }197 if ((u8)(line3[x]>>24) < (u8)(back >> 24))198 {199 if (top != 0x08)200 {201 back = line3[x];202 top2 = 0x08;203 }204 }206 if ((u8)(lineOBJ[x]>>24) < (u8)(back >> 24))207 {208 if (top != 0x10)209 {210 back = lineOBJ[x];211 top2 = 0x10;212 }213 }215 if (top2 & (BLDMOD>>8))216 color = gfxAlphaBlend(color, back,217 coeff[COLEV & 0x1F],218 coeff[(COLEV >> 8) & 0x1F]);219 }220 break;221 }222 case 2:223 if (BLDMOD & top)224 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);225 break;226 case 3:227 if (BLDMOD & top)228 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);229 break;230 }231 }232 else233 {234 // semi-transparent OBJ235 u32 back = backdrop;236 u8 top2 = 0x20;238 if ((u8)(line2[x]>>24) < (u8)(back >> 24))239 {240 back = line2[x];241 top2 = 0x04;242 }244 if ((u8)(line3[x]>>24) < (u8)(back >> 24))245 {246 back = line3[x];247 top2 = 0x08;248 }250 if (top2 & (BLDMOD>>8))251 color = gfxAlphaBlend(color, back,252 coeff[COLEV & 0x1F],253 coeff[(COLEV >> 8) & 0x1F]);254 else255 {256 switch ((BLDMOD >> 6) & 3)257 {258 case 2:259 if (BLDMOD & top)260 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);261 break;262 case 3:263 if (BLDMOD & top)264 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);265 break;266 }267 }268 }270 lineMix[x] = color;271 }272 gfxBG2Changed = 0;273 gfxBG3Changed = 0;274 gfxLastVCOUNT = VCOUNT;275 }277 void mode2RenderLineAll()278 {279 u16 *palette = (u16 *)paletteRAM;281 if (DISPCNT & 0x80)282 {283 for (int x = 0; x < 240; x++)284 {285 lineMix[x] = 0x7fff;286 }287 gfxLastVCOUNT = VCOUNT;288 return;289 }291 bool inWindow0 = false;292 bool inWindow1 = false;294 if (layerEnable & 0x2000)295 {296 u8 v0 = WIN0V >> 8;297 u8 v1 = WIN0V & 255;298 inWindow0 = ((v0 == v1) && (v0 >= 0xe8));299 if (v1 >= v0)300 inWindow0 |= (VCOUNT >= v0 && VCOUNT < v1);301 else302 inWindow0 |= (VCOUNT >= v0 || VCOUNT < v1);303 }304 if (layerEnable & 0x4000)305 {306 u8 v0 = WIN1V >> 8;307 u8 v1 = WIN1V & 255;308 inWindow1 = ((v0 == v1) && (v0 >= 0xe8));309 if (v1 >= v0)310 inWindow1 |= (VCOUNT >= v0 && VCOUNT < v1);311 else312 inWindow1 |= (VCOUNT >= v0 || VCOUNT < v1);313 }315 if (layerEnable & 0x0400)316 {317 int changed = gfxBG2Changed;318 if (gfxLastVCOUNT > VCOUNT)319 changed = 3;321 gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,322 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,323 changed, line2);324 }326 if (layerEnable & 0x0800)327 {328 int changed = gfxBG3Changed;329 if (gfxLastVCOUNT > VCOUNT)330 changed = 3;332 gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,333 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,334 changed, line3);335 }337 gfxDrawSprites(lineOBJ);338 gfxDrawOBJWin(lineOBJWin);340 u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);342 u8 inWin0Mask = WININ & 0xFF;343 u8 inWin1Mask = WININ >> 8;344 u8 outMask = WINOUT & 0xFF;346 for (int x = 0; x < 240; x++)347 {348 u32 color = backdrop;349 u8 top = 0x20;350 u8 mask = outMask;352 if (!(lineOBJWin[x] & 0x80000000))353 {354 mask = WINOUT >> 8;355 }357 if (inWindow1)358 {359 if (gfxInWin1[x])360 mask = inWin1Mask;361 }363 if (inWindow0)364 {365 if (gfxInWin0[x])366 {367 mask = inWin0Mask;368 }369 }371 if (line2[x] < color && (mask & 4))372 {373 color = line2[x];374 top = 0x04;375 }377 if ((u8)(line3[x]>>24) < (u8)(color >> 24) && (mask & 8))378 {379 color = line3[x];380 top = 0x08;381 }383 if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24) && (mask & 16))384 {385 color = lineOBJ[x];386 top = 0x10;387 }389 if (mask & 32)390 {391 if (!(color & 0x00010000))392 {393 switch ((BLDMOD >> 6) & 3)394 {395 case 0:396 break;397 case 1:398 {399 if (top & BLDMOD)400 {401 u32 back = backdrop;402 u8 top2 = 0x20;404 if ((mask & 4) && line2[x] < back)405 {406 if (top != 0x04)407 {408 back = line2[x];409 top2 = 0x04;410 }411 }413 if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))414 {415 if (top != 0x08)416 {417 back = line3[x];418 top2 = 0x08;419 }420 }422 if ((mask & 16) && (u8)(lineOBJ[x]>>24) < (u8)(back >> 24))423 {424 if (top != 0x10)425 {426 back = lineOBJ[x];427 top2 = 0x10;428 }429 }431 if (top2 & (BLDMOD>>8))432 color = gfxAlphaBlend(color, back,433 coeff[COLEV & 0x1F],434 coeff[(COLEV >> 8) & 0x1F]);435 }436 break;437 }438 case 2:439 if (BLDMOD & top)440 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);441 break;442 case 3:443 if (BLDMOD & top)444 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);445 break;446 }447 }448 else449 {450 // semi-transparent OBJ451 u32 back = backdrop;452 u8 top2 = 0x20;454 if ((mask & 4) && line2[x] < back)455 {456 back = line2[x];457 top2 = 0x04;458 }460 if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))461 {462 back = line3[x];463 top2 = 0x08;464 }466 if (top2 & (BLDMOD>>8))467 color = gfxAlphaBlend(color, back,468 coeff[COLEV & 0x1F],469 coeff[(COLEV >> 8) & 0x1F]);470 else471 {472 switch ((BLDMOD >> 6) & 3)473 {474 case 2:475 if (BLDMOD & top)476 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);477 break;478 case 3:479 if (BLDMOD & top)480 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);481 break;482 }483 }484 }485 }486 else if (color & 0x00010000)487 {488 // semi-transparent OBJ489 u32 back = backdrop;490 u8 top2 = 0x20;492 if ((mask & 4) && line2[x] < back)493 {494 back = line2[x];495 top2 = 0x04;496 }498 if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))499 {500 back = line3[x];501 top2 = 0x08;502 }504 if (top2 & (BLDMOD>>8))505 color = gfxAlphaBlend(color, back,506 coeff[COLEV & 0x1F],507 coeff[(COLEV >> 8) & 0x1F]);508 else509 {510 switch ((BLDMOD >> 6) & 3)511 {512 case 2:513 if (BLDMOD & top)514 color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);515 break;516 case 3:517 if (BLDMOD & top)518 color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);519 break;520 }521 }522 }524 lineMix[x] = color;525 }526 gfxBG2Changed = 0;527 gfxBG3Changed = 0;528 gfxLastVCOUNT = VCOUNT;529 }