Mercurial > vba-linux

     1 #include "GBAGfx.h"

     2 #include "GBAGlobals.h"

     3 

     4 void mode2RenderLine()

     5 {

     6 	u16 *palette = (u16 *)paletteRAM;

     7 

     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 	}

    17 

    18 	if (layerEnable & 0x0400)

    19 	{

    20 		int changed = gfxBG2Changed;

    21 		if (gfxLastVCOUNT > VCOUNT)

    22 			changed = 3;

    23 

    24 		gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,

    25 		                 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,

    26 		                 changed, line2);

    27 	}

    28 

    29 	if (layerEnable & 0x0800)

    30 	{

    31 		int changed = gfxBG3Changed;

    32 		if (gfxLastVCOUNT > VCOUNT)

    33 			changed = 3;

    34 

    35 		gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,

    36 		                 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,

    37 		                 changed, line3);

    38 	}

    39 

    40 	gfxDrawSprites(lineOBJ);

    41 

    42 	u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);

    43 

    44 	for (int x = 0; x < 240; x++)

    45 	{

    46 		u32 color = backdrop;

    47 		u8  top   = 0x20;

    48 

    49 		if ((u8)(line2[x]>>24) < (u8)(color >> 24))

    50 		{

    51 			color = line2[x];

    52 			top   = 0x04;

    53 		}

    54 

    55 		if ((u8)(line3[x]>>24) < (u8)(color >> 24))

    56 		{

    57 			color = line3[x];

    58 			top   = 0x08;

    59 		}

    60 

    61 		if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))

    62 		{

    63 			color = lineOBJ[x];

    64 			top   = 0x10;

    65 		}

    66 

    67 		if ((top & 0x10) && (color & 0x00010000))

    68 		{

    69 			// semi-transparent OBJ

    70 			u32 back = backdrop;

    71 			u8  top2 = 0x20;

    72 

    73 			if ((u8)(line2[x]>>24) < (u8)(back >> 24))

    74 			{

    75 				back = line2[x];

    76 				top2 = 0x04;

    77 			}

    78 

    79 			if ((u8)(line3[x]>>24) < (u8)(back >> 24))

    80 			{

    81 				back = line3[x];

    82 				top2 = 0x08;

    83 			}

    84 

    85 			if (top2 & (BLDMOD>>8))

    86 				color = gfxAlphaBlend(color, back,

    87 				                      coeff[COLEV & 0x1F],

    88 				                      coeff[(COLEV >> 8) & 0x1F]);

    89 			else

    90 			{

    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 		}

   104 

   105 		lineMix[x] = color;

   106 	}

   107 	gfxBG2Changed = 0;

   108 	gfxBG3Changed = 0;

   109 	gfxLastVCOUNT = VCOUNT;

   110 }

   111 

   112 void mode2RenderLineNoWindow()

   113 {

   114 	u16 *palette = (u16 *)paletteRAM;

   115 

   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 	}

   125 

   126 	if (layerEnable & 0x0400)

   127 	{

   128 		int changed = gfxBG2Changed;

   129 		if (gfxLastVCOUNT > VCOUNT)

   130 			changed = 3;

   131 

   132 		gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,

   133 		                 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,

   134 		                 changed, line2);

   135 	}

   136 

   137 	if (layerEnable & 0x0800)

   138 	{

   139 		int changed = gfxBG3Changed;

   140 		if (gfxLastVCOUNT > VCOUNT)

   141 			changed = 3;

   142 

   143 		gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,

   144 		                 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,

   145 		                 changed, line3);

   146 	}

   147 

   148 	gfxDrawSprites(lineOBJ);

   149 

   150 	u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);

   151 

   152 	for (int x = 0; x < 240; x++)

   153 	{

   154 		u32 color = backdrop;

   155 		u8  top   = 0x20;

   156 

   157 		if ((u8)(line2[x]>>24) < (u8)(color >> 24))

   158 		{

   159 			color = line2[x];

   160 			top   = 0x04;

   161 		}

   162 

   163 		if ((u8)(line3[x]>>24) < (u8)(color >> 24))

   164 		{

   165 			color = line3[x];

   166 			top   = 0x08;

   167 		}

   168 

   169 		if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24))

   170 		{

   171 			color = lineOBJ[x];

   172 			top   = 0x10;

   173 		}

   174 

   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;

   187 

   188 					if ((u8)(line2[x]>>24) < (u8)(back >> 24))

   189 					{

   190 						if (top != 0x04)

   191 						{

   192 							back = line2[x];

   193 							top2 = 0x04;

   194 						}

   195 					}

   196 

   197 					if ((u8)(line3[x]>>24) < (u8)(back >> 24))

   198 					{

   199 						if (top != 0x08)

   200 						{

   201 							back = line3[x];

   202 							top2 = 0x08;

   203 						}

   204 					}

   205 

   206 					if ((u8)(lineOBJ[x]>>24) < (u8)(back >> 24))

   207 					{

   208 						if (top != 0x10)

   209 						{

   210 							back = lineOBJ[x];

   211 							top2 = 0x10;

   212 						}

   213 					}

   214 

   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 		else

   233 		{

   234 			// semi-transparent OBJ

   235 			u32 back = backdrop;

   236 			u8  top2 = 0x20;

   237 

   238 			if ((u8)(line2[x]>>24) < (u8)(back >> 24))

   239 			{

   240 				back = line2[x];

   241 				top2 = 0x04;

   242 			}

   243 

   244 			if ((u8)(line3[x]>>24) < (u8)(back >> 24))

   245 			{

   246 				back = line3[x];

   247 				top2 = 0x08;

   248 			}

   249 

   250 			if (top2 & (BLDMOD>>8))

   251 				color = gfxAlphaBlend(color, back,

   252 				                      coeff[COLEV & 0x1F],

   253 				                      coeff[(COLEV >> 8) & 0x1F]);

   254 			else

   255 			{

   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 		}

   269 

   270 		lineMix[x] = color;

   271 	}

   272 	gfxBG2Changed = 0;

   273 	gfxBG3Changed = 0;

   274 	gfxLastVCOUNT = VCOUNT;

   275 }

   276 

   277 void mode2RenderLineAll()

   278 {

   279 	u16 *palette = (u16 *)paletteRAM;

   280 

   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 	}

   290 

   291 	bool inWindow0 = false;

   292 	bool inWindow1 = false;

   293 

   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 		else

   302 			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 		else

   312 			inWindow1 |= (VCOUNT >= v0 || VCOUNT < v1);

   313 	}

   314 

   315 	if (layerEnable & 0x0400)

   316 	{

   317 		int changed = gfxBG2Changed;

   318 		if (gfxLastVCOUNT > VCOUNT)

   319 			changed = 3;

   320 

   321 		gfxDrawRotScreen(BG2CNT, BG2X_L, BG2X_H, BG2Y_L, BG2Y_H,

   322 		                 BG2PA, BG2PB, BG2PC, BG2PD, gfxBG2X, gfxBG2Y,

   323 		                 changed, line2);

   324 	}

   325 

   326 	if (layerEnable & 0x0800)

   327 	{

   328 		int changed = gfxBG3Changed;

   329 		if (gfxLastVCOUNT > VCOUNT)

   330 			changed = 3;

   331 

   332 		gfxDrawRotScreen(BG3CNT, BG3X_L, BG3X_H, BG3Y_L, BG3Y_H,

   333 		                 BG3PA, BG3PB, BG3PC, BG3PD, gfxBG3X, gfxBG3Y,

   334 		                 changed, line3);

   335 	}

   336 

   337 	gfxDrawSprites(lineOBJ);

   338 	gfxDrawOBJWin(lineOBJWin);

   339 

   340 	u32 backdrop = (READ16LE(&palette[0]) | 0x30000000);

   341 

   342 	u8 inWin0Mask = WININ & 0xFF;

   343 	u8 inWin1Mask = WININ >> 8;

   344 	u8 outMask    = WINOUT & 0xFF;

   345 

   346 	for (int x = 0; x < 240; x++)

   347 	{

   348 		u32 color = backdrop;

   349 		u8  top   = 0x20;

   350 		u8  mask  = outMask;

   351 

   352 		if (!(lineOBJWin[x] & 0x80000000))

   353 		{

   354 			mask = WINOUT >> 8;

   355 		}

   356 

   357 		if (inWindow1)

   358 		{

   359 			if (gfxInWin1[x])

   360 				mask = inWin1Mask;

   361 		}

   362 

   363 		if (inWindow0)

   364 		{

   365 			if (gfxInWin0[x])

   366 			{

   367 				mask = inWin0Mask;

   368 			}

   369 		}

   370 

   371 		if (line2[x] < color && (mask & 4))

   372 		{

   373 			color = line2[x];

   374 			top   = 0x04;

   375 		}

   376 

   377 		if ((u8)(line3[x]>>24) < (u8)(color >> 24) && (mask & 8))

   378 		{

   379 			color = line3[x];

   380 			top   = 0x08;

   381 		}

   382 

   383 		if ((u8)(lineOBJ[x]>>24) < (u8)(color >> 24) && (mask & 16))

   384 		{

   385 			color = lineOBJ[x];

   386 			top   = 0x10;

   387 		}

   388 

   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;

   403 

   404 						if ((mask & 4) && line2[x] < back)

   405 						{

   406 							if (top != 0x04)

   407 							{

   408 								back = line2[x];

   409 								top2 = 0x04;

   410 							}

   411 						}

   412 

   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 						}

   421 

   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 						}

   430 

   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 			else

   449 			{

   450 				// semi-transparent OBJ

   451 				u32 back = backdrop;

   452 				u8  top2 = 0x20;

   453 

   454 				if ((mask & 4) && line2[x] < back)

   455 				{

   456 					back = line2[x];

   457 					top2 = 0x04;

   458 				}

   459 

   460 				if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))

   461 				{

   462 					back = line3[x];

   463 					top2 = 0x08;

   464 				}

   465 

   466 				if (top2 & (BLDMOD>>8))

   467 					color = gfxAlphaBlend(color, back,

   468 					                      coeff[COLEV & 0x1F],

   469 					                      coeff[(COLEV >> 8) & 0x1F]);

   470 				else

   471 				{

   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 OBJ

   489 			u32 back = backdrop;

   490 			u8  top2 = 0x20;

   491 

   492 			if ((mask & 4) && line2[x] < back)

   493 			{

   494 				back = line2[x];

   495 				top2 = 0x04;

   496 			}

   497 

   498 			if ((mask & 8) && (u8)(line3[x]>>24) < (u8)(back >> 24))

   499 			{

   500 				back = line3[x];

   501 				top2 = 0x08;

   502 			}

   503 

   504 			if (top2 & (BLDMOD>>8))

   505 				color = gfxAlphaBlend(color, back,

   506 				                      coeff[COLEV & 0x1F],

   507 				                      coeff[(COLEV >> 8) & 0x1F]);

   508 			else

   509 			{

   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 		}

   523 

   524 		lineMix[x] = color;

   525 	}

   526 	gfxBG2Changed = 0;

   527 	gfxBG3Changed = 0;

   528 	gfxLastVCOUNT = VCOUNT;

   529 }

   530
author	Robert McIntyre <rlm@mit.edu>
date	Sun, 04 Mar 2012 18:30:06 -0600
parents	f9f4f1b99eed
children