Mercurial > vba-linux

     1 #include "GBAGfx.h"

     2 #include "GBAGlobals.h"

     3 

     4 void mode3RenderLine()

     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 

    22 		if (gfxLastVCOUNT > VCOUNT)

    23 			changed = 3;

    24 

    25 		gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H,

    26 		                      BG2Y_L, BG2Y_H, BG2PA, BG2PB,

    27 		                      BG2PC, BG2PD,

    28 		                      gfxBG2X, gfxBG2Y, changed,

    29 		                      line2);

    30 	}

    31 

    32 	gfxDrawSprites(lineOBJ);

    33 

    34 	u32 background = (READ16LE(&palette[0]) | 0x30000000);

    35 

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

    37 	{

    38 		u32 color = background;

    39 		u8  top   = 0x20;

    40 

    41 		if (line2[x] < color)

    42 		{

    43 			color = line2[x];

    44 			top   = 0x04;

    45 		}

    46 

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

    48 		{

    49 			color = lineOBJ[x];

    50 			top   = 0x10;

    51 		}

    52 

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

    54 		{

    55 			// semi-transparent OBJ

    56 			u32 back = background;

    57 			u8  top2 = 0x20;

    58 

    59 			if (line2[x] < back)

    60 			{

    61 				back = line2[x];

    62 				top2 = 0x04;

    63 			}

    64 

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

    66 				color = gfxAlphaBlend(color, back,

    67 				                      coeff[COLEV & 0x1F],

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

    69 			else

    70 			{

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

    72 				{

    73 				case 2:

    74 					if (BLDMOD & top)

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

    76 					break;

    77 				case 3:

    78 					if (BLDMOD & top)

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

    80 					break;

    81 				}

    82 			}

    83 		}

    84 

    85 		lineMix[x] = color;

    86 	}

    87 	gfxBG2Changed = 0;

    88 	gfxLastVCOUNT = VCOUNT;

    89 }

    90 

    91 void mode3RenderLineNoWindow()

    92 {

    93 	u16 *palette = (u16 *)paletteRAM;

    94 

    95 	if (DISPCNT & 0x80)

    96 	{

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

    98 		{

    99 			lineMix[x] = 0x7fff;

   100 		}

   101 		gfxLastVCOUNT = VCOUNT;

   102 		return;

   103 	}

   104 

   105 	if (layerEnable & 0x0400)

   106 	{

   107 		int changed = gfxBG2Changed;

   108 

   109 		if (gfxLastVCOUNT > VCOUNT)

   110 			changed = 3;

   111 

   112 		gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H,

   113 		                      BG2Y_L, BG2Y_H, BG2PA, BG2PB,

   114 		                      BG2PC, BG2PD,

   115 		                      gfxBG2X, gfxBG2Y, changed,

   116 		                      line2);

   117 	}

   118 

   119 	gfxDrawSprites(lineOBJ);

   120 

   121 	u32 background = (READ16LE(&palette[0]) | 0x30000000);

   122 

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

   124 	{

   125 		u32 color = background;

   126 		u8  top   = 0x20;

   127 

   128 		if (line2[x] < color)

   129 		{

   130 			color = line2[x];

   131 			top   = 0x04;

   132 		}

   133 

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

   135 		{

   136 			color = lineOBJ[x];

   137 			top   = 0x10;

   138 		}

   139 

   140 		if (!(color & 0x00010000))

   141 		{

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

   143 			{

   144 			case 0:

   145 				break;

   146 			case 1:

   147 			{

   148 				if (top & BLDMOD)

   149 				{

   150 					u32 back = background;

   151 					u8  top2 = 0x20;

   152 

   153 					if (line2[x] < back)

   154 					{

   155 						if (top != 0x04)

   156 						{

   157 							back = line2[x];

   158 							top2 = 0x04;

   159 						}

   160 					}

   161 

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

   163 					{

   164 						if (top != 0x10)

   165 						{

   166 							back = lineOBJ[x];

   167 							top2 = 0x10;

   168 						}

   169 					}

   170 

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

   172 						color = gfxAlphaBlend(color, back,

   173 						                      coeff[COLEV & 0x1F],

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

   175 				}

   176 				break;

   177 			}

   178 			case 2:

   179 				if (BLDMOD & top)

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

   181 				break;

   182 			case 3:

   183 				if (BLDMOD & top)

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

   185 				break;

   186 			}

   187 		}

   188 		else

   189 		{

   190 			// semi-transparent OBJ

   191 			u32 back = background;

   192 			u8  top2 = 0x20;

   193 

   194 			if (line2[x] < back)

   195 			{

   196 				back = line2[x];

   197 				top2 = 0x04;

   198 			}

   199 

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

   201 				color = gfxAlphaBlend(color, back,

   202 				                      coeff[COLEV & 0x1F],

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

   204 			else

   205 			{

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

   207 				{

   208 				case 2:

   209 					if (BLDMOD & top)

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

   211 					break;

   212 				case 3:

   213 					if (BLDMOD & top)

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

   215 					break;

   216 				}

   217 			}

   218 		}

   219 

   220 		lineMix[x] = color;

   221 	}

   222 	gfxBG2Changed = 0;

   223 	gfxLastVCOUNT = VCOUNT;

   224 }

   225 

   226 void mode3RenderLineAll()

   227 {

   228 	u16 *palette = (u16 *)paletteRAM;

   229 

   230 	if (DISPCNT & 0x80)

   231 	{

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

   233 		{

   234 			lineMix[x] = 0x7fff;

   235 		}

   236 		gfxLastVCOUNT = VCOUNT;

   237 		return;

   238 	}

   239 

   240 	bool inWindow0 = false;

   241 	bool inWindow1 = false;

   242 

   243 	if (layerEnable & 0x2000)

   244 	{

   245 		u8 v0 = WIN0V >> 8;

   246 		u8 v1 = WIN0V & 255;

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

   248 		if (v1 >= v0)

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

   250 		else

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

   252 	}

   253 	if (layerEnable & 0x4000)

   254 	{

   255 		u8 v0 = WIN1V >> 8;

   256 		u8 v1 = WIN1V & 255;

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

   258 		if (v1 >= v0)

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

   260 		else

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

   262 	}

   263 

   264 	if (layerEnable & 0x0400)

   265 	{

   266 		int changed = gfxBG2Changed;

   267 

   268 		if (gfxLastVCOUNT > VCOUNT)

   269 			changed = 3;

   270 

   271 		gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H,

   272 		                      BG2Y_L, BG2Y_H, BG2PA, BG2PB,

   273 		                      BG2PC, BG2PD,

   274 		                      gfxBG2X, gfxBG2Y, changed,

   275 		                      line2);

   276 	}

   277 

   278 	gfxDrawSprites(lineOBJ);

   279 	gfxDrawOBJWin(lineOBJWin);

   280 

   281 	u8 inWin0Mask = WININ & 0xFF;

   282 	u8 inWin1Mask = WININ >> 8;

   283 	u8 outMask    = WINOUT & 0xFF;

   284 

   285 	u32 background = (READ16LE(&palette[0]) | 0x30000000);

   286 

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

   288 	{

   289 		u32 color = background;

   290 		u8  top   = 0x20;

   291 		u8  mask  = outMask;

   292 

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

   294 		{

   295 			mask = WINOUT >> 8;

   296 		}

   297 

   298 		if (inWindow1)

   299 		{

   300 			if (gfxInWin1[x])

   301 				mask = inWin1Mask;

   302 		}

   303 

   304 		if (inWindow0)

   305 		{

   306 			if (gfxInWin0[x])

   307 			{

   308 				mask = inWin0Mask;

   309 			}

   310 		}

   311 

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

   313 		{

   314 			color = line2[x];

   315 			top   = 0x04;

   316 		}

   317 

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

   319 		{

   320 			color = lineOBJ[x];

   321 			top   = 0x10;

   322 		}

   323 

   324 		if (mask & 32)

   325 		{

   326 			if (!(color & 0x00010000))

   327 			{

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

   329 				{

   330 				case 0:

   331 					break;

   332 				case 1:

   333 				{

   334 					if (top & BLDMOD)

   335 					{

   336 						u32 back = background;

   337 						u8  top2 = 0x20;

   338 

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

   340 						{

   341 							if (top != 0x04)

   342 							{

   343 								back = line2[x];

   344 								top2 = 0x04;

   345 							}

   346 						}

   347 

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

   349 						{

   350 							if (top != 0x10)

   351 							{

   352 								back = lineOBJ[x];

   353 								top2 = 0x10;

   354 							}

   355 						}

   356 

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

   358 							color = gfxAlphaBlend(color, back,

   359 							                      coeff[COLEV & 0x1F],

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

   361 					}

   362 					break;

   363 				}

   364 				case 2:

   365 					if (BLDMOD & top)

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

   367 					break;

   368 				case 3:

   369 					if (BLDMOD & top)

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

   371 					break;

   372 				}

   373 			}

   374 			else

   375 			{

   376 				// semi-transparent OBJ

   377 				u32 back = background;

   378 				u8  top2 = 0x20;

   379 

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

   381 				{

   382 					back = line2[x];

   383 					top2 = 0x04;

   384 				}

   385 

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

   387 					color = gfxAlphaBlend(color, back,

   388 					                      coeff[COLEV & 0x1F],

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

   390 				else

   391 				{

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

   393 					{

   394 					case 2:

   395 						if (BLDMOD & top)

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

   397 						break;

   398 					case 3:

   399 						if (BLDMOD & top)

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

   401 						break;

   402 					}

   403 				}

   404 			}

   405 		}

   406 		else if (color & 0x00010000)

   407 		{

   408 			// semi-transparent OBJ

   409 			u32 back = background;

   410 			u8  top2 = 0x20;

   411 

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

   413 			{

   414 				back = line2[x];

   415 				top2 = 0x04;

   416 			}

   417 

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

   419 				color = gfxAlphaBlend(color, back,

   420 				                      coeff[COLEV & 0x1F],

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

   422 			else

   423 			{

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

   425 				{

   426 				case 2:

   427 					if (BLDMOD & top)

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

   429 					break;

   430 				case 3:

   431 					if (BLDMOD & top)

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

   433 					break;

   434 				}

   435 			}

   436 		}

   437 

   438 		lineMix[x] = color;

   439 	}

   440 	gfxBG2Changed = 0;

   441 	gfxLastVCOUNT = VCOUNT;

   442 }

   443
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:54:39 -0600
parents	f9f4f1b99eed
children