Mercurial > vba-linux

     1 #include "GBAGfx.h"

     2 #include "GBAGlobals.h"

     3 

     4 void mode0RenderLine()

     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 		return;

    15 	}

    16 

    17 	if (layerEnable & 0x0100)

    18 	{

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

    20 	}

    21 

    22 	if (layerEnable & 0x0200)

    23 	{

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

    25 	}

    26 

    27 	if (layerEnable & 0x0400)

    28 	{

    29 		gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);

    30 	}

    31 

    32 	if (layerEnable & 0x0800)

    33 	{

    34 		gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);

    35 	}

    36 

    37 	gfxDrawSprites(lineOBJ);

    38 

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

    40 

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

    42 	{

    43 		u32 color = backdrop;

    44 		u8  top   = 0x20;

    45 

    46 		if (line0[x] < color)

    47 		{

    48 			color = line0[x];

    49 			top   = 0x01;

    50 		}

    51 

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

    53 		{

    54 			color = line1[x];

    55 			top   = 0x02;

    56 		}

    57 

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

    59 		{

    60 			color = line2[x];

    61 			top   = 0x04;

    62 		}

    63 

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

    65 		{

    66 			color = line3[x];

    67 			top   = 0x08;

    68 		}

    69 

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

    71 		{

    72 			color = lineOBJ[x];

    73 			top   = 0x10;

    74 		}

    75 

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

    77 		{

    78 			// semi-transparent OBJ

    79 			u32 back = backdrop;

    80 			u8  top2 = 0x20;

    81 

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

    83 			{

    84 				back = line0[x];

    85 				top2 = 0x01;

    86 			}

    87 

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

    89 			{

    90 				back = line1[x];

    91 				top2 = 0x02;

    92 			}

    93 

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

    95 			{

    96 				back = line2[x];

    97 				top2 = 0x04;

    98 			}

    99 

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

   101 			{

   102 				back = line3[x];

   103 				top2 = 0x08;

   104 			}

   105 

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

   107 				color = gfxAlphaBlend(color, back,

   108 				                      coeff[COLEV & 0x1F],

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

   110 			else

   111 			{

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

   113 				{

   114 				case 2:

   115 					if (BLDMOD & top)

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

   117 					break;

   118 				case 3:

   119 					if (BLDMOD & top)

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

   121 					break;

   122 				}

   123 			}

   124 		}

   125 

   126 		lineMix[x] = color;

   127 	}

   128 }

   129 

   130 void mode0RenderLineNoWindow()

   131 {

   132 	u16 *palette = (u16 *)paletteRAM;

   133 

   134 	if (DISPCNT & 0x80)

   135 	{

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

   137 		{

   138 			lineMix[x] = 0x7fff;

   139 		}

   140 		return;

   141 	}

   142 

   143 	if (layerEnable & 0x0100)

   144 	{

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

   146 	}

   147 

   148 	if (layerEnable & 0x0200)

   149 	{

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

   151 	}

   152 

   153 	if (layerEnable & 0x0400)

   154 	{

   155 		gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);

   156 	}

   157 

   158 	if (layerEnable & 0x0800)

   159 	{

   160 		gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);

   161 	}

   162 

   163 	gfxDrawSprites(lineOBJ);

   164 

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

   166 

   167 	int effect = (BLDMOD >> 6) & 3;

   168 

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

   170 	{

   171 		u32 color = backdrop;

   172 		u8  top   = 0x20;

   173 

   174 		if (line0[x] < color)

   175 		{

   176 			color = line0[x];

   177 			top   = 0x01;

   178 		}

   179 

   180 		if (line1[x] < (color & 0xFF000000))

   181 		{

   182 			color = line1[x];

   183 			top   = 0x02;

   184 		}

   185 

   186 		if (line2[x] < (color & 0xFF000000))

   187 		{

   188 			color = line2[x];

   189 			top   = 0x04;

   190 		}

   191 

   192 		if (line3[x] < (color & 0xFF000000))

   193 		{

   194 			color = line3[x];

   195 			top   = 0x08;

   196 		}

   197 

   198 		if (lineOBJ[x] < (color & 0xFF000000))

   199 		{

   200 			color = lineOBJ[x];

   201 			top   = 0x10;

   202 		}

   203 

   204 		if (!(color & 0x00010000))

   205 		{

   206 			switch (effect)

   207 			{

   208 			case 0:

   209 				break;

   210 			case 1:

   211 			{

   212 				if (top & BLDMOD)

   213 				{

   214 					u32 back = backdrop;

   215 					u8  top2 = 0x20;

   216 					if (line0[x] < back)

   217 					{

   218 						if (top != 0x01)

   219 						{

   220 							back = line0[x];

   221 							top2 = 0x01;

   222 						}

   223 					}

   224 

   225 					if (line1[x] < (back & 0xFF000000))

   226 					{

   227 						if (top != 0x02)

   228 						{

   229 							back = line1[x];

   230 							top2 = 0x02;

   231 						}

   232 					}

   233 

   234 					if (line2[x] < (back & 0xFF000000))

   235 					{

   236 						if (top != 0x04)

   237 						{

   238 							back = line2[x];

   239 							top2 = 0x04;

   240 						}

   241 					}

   242 

   243 					if (line3[x] < (back & 0xFF000000))

   244 					{

   245 						if (top != 0x08)

   246 						{

   247 							back = line3[x];

   248 							top2 = 0x08;

   249 						}

   250 					}

   251 

   252 					if (lineOBJ[x] < (back & 0xFF000000))

   253 					{

   254 						if (top != 0x10)

   255 						{

   256 							back = lineOBJ[x];

   257 							top2 = 0x10;

   258 						}

   259 					}

   260 

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

   262 						color = gfxAlphaBlend(color, back,

   263 						                      coeff[COLEV & 0x1F],

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

   265 				}

   266 				break;

   267 			}

   268 			case 2:

   269 				if (BLDMOD & top)

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

   271 				break;

   272 			case 3:

   273 				if (BLDMOD & top)

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

   275 				break;

   276 			}

   277 		}

   278 		else

   279 		{

   280 			// semi-transparent OBJ

   281 			u32 back = backdrop;

   282 			u8  top2 = 0x20;

   283 

   284 			if (line0[x] < back)

   285 			{

   286 				back = line0[x];

   287 				top2 = 0x01;

   288 			}

   289 

   290 			if (line1[x] < (back & 0xFF000000))

   291 			{

   292 				back = line1[x];

   293 				top2 = 0x02;

   294 			}

   295 

   296 			if (line2[x] < (back & 0xFF000000))

   297 			{

   298 				back = line2[x];

   299 				top2 = 0x04;

   300 			}

   301 

   302 			if (line3[x] < (back & 0xFF000000))

   303 			{

   304 				back = line3[x];

   305 				top2 = 0x08;

   306 			}

   307 

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

   309 				color = gfxAlphaBlend(color, back,

   310 				                      coeff[COLEV & 0x1F],

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

   312 			else

   313 			{

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

   315 				{

   316 				case 2:

   317 					if (BLDMOD & top)

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

   319 					break;

   320 				case 3:

   321 					if (BLDMOD & top)

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

   323 					break;

   324 				}

   325 			}

   326 		}

   327 

   328 		lineMix[x] = color;

   329 	}

   330 }

   331 

   332 void mode0RenderLineAll()

   333 {

   334 	u16 *palette = (u16 *)paletteRAM;

   335 

   336 	if (DISPCNT & 0x80)

   337 	{

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

   339 		{

   340 			lineMix[x] = 0x7fff;

   341 		}

   342 		return;

   343 	}

   344 

   345 	bool inWindow0 = false;

   346 	bool inWindow1 = false;

   347 

   348 	if (layerEnable & 0x2000)

   349 	{

   350 		u8 v0 = WIN0V >> 8;

   351 		u8 v1 = WIN0V & 255;

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

   353 		if (v1 >= v0)

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

   355 		else

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

   357 	}

   358 	if (layerEnable & 0x4000)

   359 	{

   360 		u8 v0 = WIN1V >> 8;

   361 		u8 v1 = WIN1V & 255;

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

   363 		if (v1 >= v0)

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

   365 		else

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

   367 	}

   368 

   369 	if ((layerEnable & 0x0100))

   370 	{

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

   372 	}

   373 

   374 	if ((layerEnable & 0x0200))

   375 	{

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

   377 	}

   378 

   379 	if ((layerEnable & 0x0400))

   380 	{

   381 		gfxDrawTextScreen(BG2CNT, BG2HOFS, BG2VOFS, line2);

   382 	}

   383 

   384 	if ((layerEnable & 0x0800))

   385 	{

   386 		gfxDrawTextScreen(BG3CNT, BG3HOFS, BG3VOFS, line3);

   387 	}

   388 

   389 	gfxDrawSprites(lineOBJ);

   390 	gfxDrawOBJWin(lineOBJWin);

   391 

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

   393 

   394 	u8 inWin0Mask = WININ & 0xFF;

   395 	u8 inWin1Mask = WININ >> 8;

   396 	u8 outMask    = WINOUT & 0xFF;

   397 

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

   399 	{

   400 		u32 color = backdrop;

   401 		u8  top   = 0x20;

   402 		u8  mask  = outMask;

   403 

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

   405 		{

   406 			mask = WINOUT >> 8;

   407 		}

   408 

   409 		if (inWindow1)

   410 		{

   411 			if (gfxInWin1[x])

   412 				mask = inWin1Mask;

   413 		}

   414 

   415 		if (inWindow0)

   416 		{

   417 			if (gfxInWin0[x])

   418 			{

   419 				mask = inWin0Mask;

   420 			}

   421 		}

   422 

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

   424 		{

   425 			color = line0[x];

   426 			top   = 0x01;

   427 		}

   428 

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

   430 		{

   431 			color = line1[x];

   432 			top   = 0x02;

   433 		}

   434 

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

   436 		{

   437 			color = line2[x];

   438 			top   = 0x04;

   439 		}

   440 

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

   442 		{

   443 			color = line3[x];

   444 			top   = 0x08;

   445 		}

   446 

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

   448 		{

   449 			color = lineOBJ[x];

   450 			top   = 0x10;

   451 		}

   452 

   453 		// special FX on in the window

   454 		if (mask & 32)

   455 		{

   456 			if (!(color & 0x00010000))

   457 			{

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

   459 				{

   460 				case 0:

   461 					break;

   462 				case 1:

   463 				{

   464 					if (top & BLDMOD)

   465 					{

   466 						u32 back = backdrop;

   467 						u8  top2 = 0x20;

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

   469 						{

   470 							if (top != 0x01)

   471 							{

   472 								back = line0[x];

   473 								top2 = 0x01;

   474 							}

   475 						}

   476 

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

   478 						{

   479 							if (top != 0x02)

   480 							{

   481 								back = line1[x];

   482 								top2 = 0x02;

   483 							}

   484 						}

   485 

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

   487 						{

   488 							if (top != 0x04)

   489 							{

   490 								back = line2[x];

   491 								top2 = 0x04;

   492 							}

   493 						}

   494 

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

   496 						{

   497 							if (top != 0x08)

   498 							{

   499 								back = line3[x];

   500 								top2 = 0x08;

   501 							}

   502 						}

   503 

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

   505 						{

   506 							if (top != 0x10)

   507 							{

   508 								back = lineOBJ[x];

   509 								top2 = 0x10;

   510 							}

   511 						}

   512 

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

   514 							color = gfxAlphaBlend(color, back,

   515 							                      coeff[COLEV & 0x1F],

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

   517 					}

   518 					break;

   519 				}

   520 				case 2:

   521 					if (BLDMOD & top)

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

   523 					break;

   524 				case 3:

   525 					if (BLDMOD & top)

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

   527 					break;

   528 				}

   529 			}

   530 			else

   531 			{

   532 				// semi-transparent OBJ

   533 				u32 back = backdrop;

   534 				u8  top2 = 0x20;

   535 

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

   537 				{

   538 					back = line0[x];

   539 					top2 = 0x01;

   540 				}

   541 

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

   543 				{

   544 					back = line1[x];

   545 					top2 = 0x02;

   546 				}

   547 

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

   549 				{

   550 					back = line2[x];

   551 					top2 = 0x04;

   552 				}

   553 

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

   555 				{

   556 					back = line3[x];

   557 					top2 = 0x08;

   558 				}

   559 

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

   561 					color = gfxAlphaBlend(color, back,

   562 					                      coeff[COLEV & 0x1F],

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

   564 				else

   565 				{

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

   567 					{

   568 					case 2:

   569 						if (BLDMOD & top)

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

   571 						break;

   572 					case 3:

   573 						if (BLDMOD & top)

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

   575 						break;

   576 					}

   577 				}

   578 			}

   579 		}

   580 		else if (color & 0x00010000)

   581 		{

   582 			// semi-transparent OBJ

   583 			u32 back = backdrop;

   584 			u8  top2 = 0x20;

   585 

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

   587 			{

   588 				back = line0[x];

   589 				top2 = 0x01;

   590 			}

   591 

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

   593 			{

   594 				back = line1[x];

   595 				top2 = 0x02;

   596 			}

   597 

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

   599 			{

   600 				back = line2[x];

   601 				top2 = 0x04;

   602 			}

   603 

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

   605 			{

   606 				back = line3[x];

   607 				top2 = 0x08;

   608 			}

   609 

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

   611 				color = gfxAlphaBlend(color, back,

   612 				                      coeff[COLEV & 0x1F],

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

   614 			else

   615 			{

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

   617 				{

   618 				case 2:

   619 					if (BLDMOD & top)

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

   621 					break;

   622 				case 3:

   623 					if (BLDMOD & top)

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

   625 					break;

   626 				}

   627 			}

   628 		}

   629 

   630 		lineMix[x] = color;

   631 	}

   632 }

   633
author	Robert McIntyre <rlm@mit.edu>
date	Mon, 05 Mar 2012 01:58:52 -0600
parents	f9f4f1b99eed
children