Mercurial > vba-linux

     1 #include "GBAGfx.h"

     2 #include "GBAGlobals.h"

     3 

     4 void mode1RenderLine()

     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 & 0x0100)

    19 	{

    20 		gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);

    21 	}

    22 

    23 	if (layerEnable & 0x0200)

    24 	{

    25 		gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);

    26 	}

    27 

    28 	if (layerEnable & 0x0400)

    29 	{

    30 		int changed = gfxBG2Changed;

    31 		if (gfxLastVCOUNT > VCOUNT)

    32 			changed = 3;

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

    34 		                 BG2PA, BG2PB, BG2PC, BG2PD,

    35 		                 gfxBG2X, gfxBG2Y, changed, line2);

    36 	}

    37 

    38 	gfxDrawSprites(lineOBJ);

    39 

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

    41 

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

    43 	{

    44 		u32 color = backdrop;

    45 		u8  top   = 0x20;

    46 

    47 		if (line0[x] < color)

    48 		{

    49 			color = line0[x];

    50 			top   = 0x01;

    51 		}

    52 

    53 		if ((u8)(line1[x]>>24) < (u8)(color >> 24))

    54 		{

    55 			color = line1[x];

    56 			top   = 0x02;

    57 		}

    58 

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

    60 		{

    61 			color = line2[x];

    62 			top   = 0x04;

    63 		}

    64 

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

    66 		{

    67 			color = lineOBJ[x];

    68 			top   = 0x10;

    69 		}

    70 

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

    72 		{

    73 			// semi-transparent OBJ

    74 			u32 back = backdrop;

    75 			u8  top2 = 0x20;

    76 

    77 			if ((u8)(line0[x]>>24) < (u8)(back >> 24))

    78 			{

    79 				back = line0[x];

    80 				top2 = 0x01;

    81 			}

    82 

    83 			if ((u8)(line1[x]>>24) < (u8)(back >> 24))

    84 			{

    85 				back = line1[x];

    86 				top2 = 0x02;

    87 			}

    88 

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

    90 			{

    91 				back = line2[x];

    92 				top2 = 0x04;

    93 			}

    94 

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

    96 				color = gfxAlphaBlend(color, back,

    97 				                      coeff[COLEV & 0x1F],

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

    99 			else

   100 			{

   101 				switch ((BLDMOD >> 6) & 3)

   102 				{

   103 				case 2:

   104 					if (BLDMOD & top)

   105 						color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   106 					break;

   107 				case 3:

   108 					if (BLDMOD & top)

   109 						color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   110 					break;

   111 				}

   112 			}

   113 		}

   114 

   115 		lineMix[x] = color;

   116 	}

   117 	gfxBG2Changed = 0;

   118 	gfxLastVCOUNT = VCOUNT;

   119 }

   120 

   121 void mode1RenderLineNoWindow()

   122 {

   123 	u16 *palette = (u16 *)paletteRAM;

   124 

   125 	if (DISPCNT & 0x80)

   126 	{

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

   128 		{

   129 			lineMix[x] = 0x7fff;

   130 		}

   131 		gfxLastVCOUNT = VCOUNT;

   132 		return;

   133 	}

   134 

   135 	if (layerEnable & 0x0100)

   136 	{

   137 		gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);

   138 	}

   139 

   140 	if (layerEnable & 0x0200)

   141 	{

   142 		gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);

   143 	}

   144 

   145 	if (layerEnable & 0x0400)

   146 	{

   147 		int changed = gfxBG2Changed;

   148 		if (gfxLastVCOUNT > VCOUNT)

   149 			changed = 3;

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

   151 		                 BG2PA, BG2PB, BG2PC, BG2PD,

   152 		                 gfxBG2X, gfxBG2Y, changed, line2);

   153 	}

   154 

   155 	gfxDrawSprites(lineOBJ);

   156 

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

   158 

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

   160 	{

   161 		u32 color = backdrop;

   162 		u8  top   = 0x20;

   163 

   164 		if (line0[x] < color)

   165 		{

   166 			color = line0[x];

   167 			top   = 0x01;

   168 		}

   169 

   170 		if ((u8)(line1[x]>>24) < (u8)(color >> 24))

   171 		{

   172 			color = line1[x];

   173 			top   = 0x02;

   174 		}

   175 

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

   177 		{

   178 			color = line2[x];

   179 			top   = 0x04;

   180 		}

   181 

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

   183 		{

   184 			color = lineOBJ[x];

   185 			top   = 0x10;

   186 		}

   187 

   188 		if (!(color & 0x00010000))

   189 		{

   190 			switch ((BLDMOD >> 6) & 3)

   191 			{

   192 			case 0:

   193 				break;

   194 			case 1:

   195 			{

   196 				if (top & BLDMOD)

   197 				{

   198 					u32 back = backdrop;

   199 					u8  top2 = 0x20;

   200 					if ((u8)(line0[x]>>24) < (u8)(back >> 24))

   201 					{

   202 						if (top != 0x01)

   203 						{

   204 							back = line0[x];

   205 							top2 = 0x01;

   206 						}

   207 					}

   208 

   209 					if ((u8)(line1[x]>>24) < (u8)(back >> 24))

   210 					{

   211 						if (top != 0x02)

   212 						{

   213 							back = line1[x];

   214 							top2 = 0x02;

   215 						}

   216 					}

   217 

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

   219 					{

   220 						if (top != 0x04)

   221 						{

   222 							back = line2[x];

   223 							top2 = 0x04;

   224 						}

   225 					}

   226 

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

   228 					{

   229 						if (top != 0x10)

   230 						{

   231 							back = lineOBJ[x];

   232 							top2 = 0x10;

   233 						}

   234 					}

   235 

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

   237 						color = gfxAlphaBlend(color, back,

   238 						                      coeff[COLEV & 0x1F],

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

   240 				}

   241 				break;

   242 			}

   243 			case 2:

   244 				if (BLDMOD & top)

   245 					color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   246 				break;

   247 			case 3:

   248 				if (BLDMOD & top)

   249 					color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   250 				break;

   251 			}

   252 		}

   253 		else

   254 		{

   255 			// semi-transparent OBJ

   256 			u32 back = backdrop;

   257 			u8  top2 = 0x20;

   258 

   259 			if ((u8)(line0[x]>>24) < (u8)(back >> 24))

   260 			{

   261 				back = line0[x];

   262 				top2 = 0x01;

   263 			}

   264 

   265 			if ((u8)(line1[x]>>24) < (u8)(back >> 24))

   266 			{

   267 				back = line1[x];

   268 				top2 = 0x02;

   269 			}

   270 

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

   272 			{

   273 				back = line2[x];

   274 				top2 = 0x04;

   275 			}

   276 

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

   278 				color = gfxAlphaBlend(color, back,

   279 				                      coeff[COLEV & 0x1F],

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

   281 			else

   282 			{

   283 				switch ((BLDMOD >> 6) & 3)

   284 				{

   285 				case 2:

   286 					if (BLDMOD & top)

   287 						color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   288 					break;

   289 				case 3:

   290 					if (BLDMOD & top)

   291 						color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   292 					break;

   293 				}

   294 			}

   295 		}

   296 

   297 		lineMix[x] = color;

   298 	}

   299 	gfxBG2Changed = 0;

   300 	gfxLastVCOUNT = VCOUNT;

   301 }

   302 

   303 void mode1RenderLineAll()

   304 {

   305 	u16 *palette = (u16 *)paletteRAM;

   306 

   307 	if (DISPCNT & 0x80)

   308 	{

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

   310 		{

   311 			lineMix[x] = 0x7fff;

   312 		}

   313 		gfxLastVCOUNT = VCOUNT;

   314 		return;

   315 	}

   316 

   317 	bool inWindow0 = false;

   318 	bool inWindow1 = false;

   319 

   320 	if (layerEnable & 0x2000)

   321 	{

   322 		u8 v0 = WIN0V >> 8;

   323 		u8 v1 = WIN0V & 255;

   324 		inWindow0 = ((v0 == v1) && (v0 >= 0xe8));

   325 		if (v1 >= v0)

   326 			inWindow0 |= (VCOUNT >= v0 && VCOUNT < v1);

   327 		else

   328 			inWindow0 |= (VCOUNT >= v0 || VCOUNT < v1);

   329 	}

   330 	if (layerEnable & 0x4000)

   331 	{

   332 		u8 v0 = WIN1V >> 8;

   333 		u8 v1 = WIN1V & 255;

   334 		inWindow1 = ((v0 == v1) && (v0 >= 0xe8));

   335 		if (v1 >= v0)

   336 			inWindow1 |= (VCOUNT >= v0 && VCOUNT < v1);

   337 		else

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

   339 	}

   340 

   341 	if (layerEnable & 0x0100)

   342 	{

   343 		gfxDrawTextScreen(BG0CNT, BG0HOFS, BG0VOFS, line0);

   344 	}

   345 

   346 	if (layerEnable & 0x0200)

   347 	{

   348 		gfxDrawTextScreen(BG1CNT, BG1HOFS, BG1VOFS, line1);

   349 	}

   350 

   351 	if (layerEnable & 0x0400)

   352 	{

   353 		int changed = gfxBG2Changed;

   354 		if (gfxLastVCOUNT > VCOUNT)

   355 			changed = 3;

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

   357 		                 BG2PA, BG2PB, BG2PC, BG2PD,

   358 		                 gfxBG2X, gfxBG2Y, changed, line2);

   359 	}

   360 

   361 	gfxDrawSprites(lineOBJ);

   362 	gfxDrawOBJWin(lineOBJWin);

   363 

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

   365 

   366 	u8 inWin0Mask = WININ & 0xFF;

   367 	u8 inWin1Mask = WININ >> 8;

   368 	u8 outMask    = WINOUT & 0xFF;

   369 

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

   371 	{

   372 		u32 color = backdrop;

   373 		u8  top   = 0x20;

   374 		u8  mask  = outMask;

   375 

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

   377 		{

   378 			mask = WINOUT >> 8;

   379 		}

   380 

   381 		if (inWindow1)

   382 		{

   383 			if (gfxInWin1[x])

   384 				mask = inWin1Mask;

   385 		}

   386 

   387 		if (inWindow0)

   388 		{

   389 			if (gfxInWin0[x])

   390 			{

   391 				mask = inWin0Mask;

   392 			}

   393 		}

   394 

   395 		if (line0[x] < color && (mask & 1))

   396 		{

   397 			color = line0[x];

   398 			top   = 0x01;

   399 		}

   400 

   401 		if ((u8)(line1[x]>>24) < (u8)(color >> 24) && (mask & 2))

   402 		{

   403 			color = line1[x];

   404 			top   = 0x02;

   405 		}

   406 

   407 		if ((u8)(line2[x]>>24) < (u8)(color >> 24) && (mask & 4))

   408 		{

   409 			color = line2[x];

   410 			top   = 0x04;

   411 		}

   412 

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

   414 		{

   415 			color = lineOBJ[x];

   416 			top   = 0x10;

   417 		}

   418 

   419 		// special FX on the window

   420 		if (mask & 32)

   421 		{

   422 			if (!(color & 0x00010000))

   423 			{

   424 				switch ((BLDMOD >> 6) & 3)

   425 				{

   426 				case 0:

   427 					break;

   428 				case 1:

   429 				{

   430 					if (top & BLDMOD)

   431 					{

   432 						u32 back = backdrop;

   433 						u8  top2 = 0x20;

   434 						if ((mask & 1) && (u8)(line0[x]>>24) < (u8)(back >> 24))

   435 						{

   436 							if (top != 0x01)

   437 							{

   438 								back = line0[x];

   439 								top2 = 0x01;

   440 							}

   441 						}

   442 

   443 						if ((mask & 2) && (u8)(line1[x]>>24) < (u8)(back >> 24))

   444 						{

   445 							if (top != 0x02)

   446 							{

   447 								back = line1[x];

   448 								top2 = 0x02;

   449 							}

   450 						}

   451 

   452 						if ((mask & 4) && (u8)(line2[x]>>24) < (u8)(back >> 24))

   453 						{

   454 							if (top != 0x04)

   455 							{

   456 								back = line2[x];

   457 								top2 = 0x04;

   458 							}

   459 						}

   460 

   461 						if ((mask & 16) && (u8)(lineOBJ[x]>>24) < (u8)(back >> 24))

   462 						{

   463 							if (top != 0x10)

   464 							{

   465 								back = lineOBJ[x];

   466 								top2 = 0x10;

   467 							}

   468 						}

   469 

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

   471 							color = gfxAlphaBlend(color, back,

   472 							                      coeff[COLEV & 0x1F],

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

   474 					}

   475 					break;

   476 				}

   477 				case 2:

   478 					if (BLDMOD & top)

   479 						color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   480 					break;

   481 				case 3:

   482 					if (BLDMOD & top)

   483 						color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   484 					break;

   485 				}

   486 			}

   487 			else

   488 			{

   489 				// semi-transparent OBJ

   490 				u32 back = backdrop;

   491 				u8  top2 = 0x20;

   492 

   493 				if ((mask & 1) && (u8)(line0[x]>>24) < (u8)(back >> 24))

   494 				{

   495 					back = line0[x];

   496 					top2 = 0x01;

   497 				}

   498 

   499 				if ((mask & 2) && (u8)(line1[x]>>24) < (u8)(back >> 24))

   500 				{

   501 					back = line1[x];

   502 					top2 = 0x02;

   503 				}

   504 

   505 				if ((mask & 4) && (u8)(line2[x]>>24) < (u8)(back >> 24))

   506 				{

   507 					back = line2[x];

   508 					top2 = 0x04;

   509 				}

   510 

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

   512 					color = gfxAlphaBlend(color, back,

   513 					                      coeff[COLEV & 0x1F],

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

   515 				else

   516 				{

   517 					switch ((BLDMOD >> 6) & 3)

   518 					{

   519 					case 2:

   520 						if (BLDMOD & top)

   521 							color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   522 						break;

   523 					case 3:

   524 						if (BLDMOD & top)

   525 							color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   526 						break;

   527 					}

   528 				}

   529 			}

   530 		}

   531 		else if (color & 0x00010000)

   532 		{

   533 			// semi-transparent OBJ

   534 			u32 back = backdrop;

   535 			u8  top2 = 0x20;

   536 

   537 			if ((mask & 1) && (u8)(line0[x]>>24) < (u8)(back >> 24))

   538 			{

   539 				back = line0[x];

   540 				top2 = 0x01;

   541 			}

   542 

   543 			if ((mask & 2) && (u8)(line1[x]>>24) < (u8)(back >> 24))

   544 			{

   545 				back = line1[x];

   546 				top2 = 0x02;

   547 			}

   548 

   549 			if ((mask & 4) && (u8)(line2[x]>>24) < (u8)(back >> 24))

   550 			{

   551 				back = line2[x];

   552 				top2 = 0x04;

   553 			}

   554 

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

   556 				color = gfxAlphaBlend(color, back,

   557 				                      coeff[COLEV & 0x1F],

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

   559 			else

   560 			{

   561 				switch ((BLDMOD >> 6) & 3)

   562 				{

   563 				case 2:

   564 					if (BLDMOD & top)

   565 						color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]);

   566 					break;

   567 				case 3:

   568 					if (BLDMOD & top)

   569 						color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]);

   570 					break;

   571 				}

   572 			}

   573 		}

   574 

   575 		lineMix[x] = color;

   576 	}

   577 	gfxBG2Changed = 0;

   578 	gfxLastVCOUNT = VCOUNT;

   579 }

   580
author	Robert McIntyre <rlm@mit.edu>
date	Sun, 04 Mar 2012 14:33:52 -0600
parents	f9f4f1b99eed
children