Mercurial > vba-linux
diff src/gba/Mode3.cpp @ 1:f9f4f1b99eed
importing src directory
| author | Robert McIntyre <rlm@mit.edu> |
|---|---|
| date | Sat, 03 Mar 2012 10:31:27 -0600 |
| parents | |
| children |
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1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/gba/Mode3.cpp Sat Mar 03 10:31:27 2012 -0600 1.3 @@ -0,0 +1,443 @@ 1.4 +#include "GBAGfx.h" 1.5 +#include "GBAGlobals.h" 1.6 + 1.7 +void mode3RenderLine() 1.8 +{ 1.9 + u16 *palette = (u16 *)paletteRAM; 1.10 + 1.11 + if (DISPCNT & 0x80) 1.12 + { 1.13 + for (int x = 0; x < 240; x++) 1.14 + { 1.15 + lineMix[x] = 0x7fff; 1.16 + } 1.17 + gfxLastVCOUNT = VCOUNT; 1.18 + return; 1.19 + } 1.20 + 1.21 + if (layerEnable & 0x0400) 1.22 + { 1.23 + int changed = gfxBG2Changed; 1.24 + 1.25 + if (gfxLastVCOUNT > VCOUNT) 1.26 + changed = 3; 1.27 + 1.28 + gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H, 1.29 + BG2Y_L, BG2Y_H, BG2PA, BG2PB, 1.30 + BG2PC, BG2PD, 1.31 + gfxBG2X, gfxBG2Y, changed, 1.32 + line2); 1.33 + } 1.34 + 1.35 + gfxDrawSprites(lineOBJ); 1.36 + 1.37 + u32 background = (READ16LE(&palette[0]) | 0x30000000); 1.38 + 1.39 + for (int x = 0; x < 240; x++) 1.40 + { 1.41 + u32 color = background; 1.42 + u8 top = 0x20; 1.43 + 1.44 + if (line2[x] < color) 1.45 + { 1.46 + color = line2[x]; 1.47 + top = 0x04; 1.48 + } 1.49 + 1.50 + if ((u8)(lineOBJ[x]>>24) < (u8)(color >>24)) 1.51 + { 1.52 + color = lineOBJ[x]; 1.53 + top = 0x10; 1.54 + } 1.55 + 1.56 + if ((top & 0x10) && (color & 0x00010000)) 1.57 + { 1.58 + // semi-transparent OBJ 1.59 + u32 back = background; 1.60 + u8 top2 = 0x20; 1.61 + 1.62 + if (line2[x] < back) 1.63 + { 1.64 + back = line2[x]; 1.65 + top2 = 0x04; 1.66 + } 1.67 + 1.68 + if (top2 & (BLDMOD>>8)) 1.69 + color = gfxAlphaBlend(color, back, 1.70 + coeff[COLEV & 0x1F], 1.71 + coeff[(COLEV >> 8) & 0x1F]); 1.72 + else 1.73 + { 1.74 + switch ((BLDMOD >> 6) & 3) 1.75 + { 1.76 + case 2: 1.77 + if (BLDMOD & top) 1.78 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.79 + break; 1.80 + case 3: 1.81 + if (BLDMOD & top) 1.82 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.83 + break; 1.84 + } 1.85 + } 1.86 + } 1.87 + 1.88 + lineMix[x] = color; 1.89 + } 1.90 + gfxBG2Changed = 0; 1.91 + gfxLastVCOUNT = VCOUNT; 1.92 +} 1.93 + 1.94 +void mode3RenderLineNoWindow() 1.95 +{ 1.96 + u16 *palette = (u16 *)paletteRAM; 1.97 + 1.98 + if (DISPCNT & 0x80) 1.99 + { 1.100 + for (int x = 0; x < 240; x++) 1.101 + { 1.102 + lineMix[x] = 0x7fff; 1.103 + } 1.104 + gfxLastVCOUNT = VCOUNT; 1.105 + return; 1.106 + } 1.107 + 1.108 + if (layerEnable & 0x0400) 1.109 + { 1.110 + int changed = gfxBG2Changed; 1.111 + 1.112 + if (gfxLastVCOUNT > VCOUNT) 1.113 + changed = 3; 1.114 + 1.115 + gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H, 1.116 + BG2Y_L, BG2Y_H, BG2PA, BG2PB, 1.117 + BG2PC, BG2PD, 1.118 + gfxBG2X, gfxBG2Y, changed, 1.119 + line2); 1.120 + } 1.121 + 1.122 + gfxDrawSprites(lineOBJ); 1.123 + 1.124 + u32 background = (READ16LE(&palette[0]) | 0x30000000); 1.125 + 1.126 + for (int x = 0; x < 240; x++) 1.127 + { 1.128 + u32 color = background; 1.129 + u8 top = 0x20; 1.130 + 1.131 + if (line2[x] < color) 1.132 + { 1.133 + color = line2[x]; 1.134 + top = 0x04; 1.135 + } 1.136 + 1.137 + if ((u8)(lineOBJ[x]>>24) < (u8)(color >>24)) 1.138 + { 1.139 + color = lineOBJ[x]; 1.140 + top = 0x10; 1.141 + } 1.142 + 1.143 + if (!(color & 0x00010000)) 1.144 + { 1.145 + switch ((BLDMOD >> 6) & 3) 1.146 + { 1.147 + case 0: 1.148 + break; 1.149 + case 1: 1.150 + { 1.151 + if (top & BLDMOD) 1.152 + { 1.153 + u32 back = background; 1.154 + u8 top2 = 0x20; 1.155 + 1.156 + if (line2[x] < back) 1.157 + { 1.158 + if (top != 0x04) 1.159 + { 1.160 + back = line2[x]; 1.161 + top2 = 0x04; 1.162 + } 1.163 + } 1.164 + 1.165 + if ((u8)(lineOBJ[x]>>24) < (u8)(back >> 24)) 1.166 + { 1.167 + if (top != 0x10) 1.168 + { 1.169 + back = lineOBJ[x]; 1.170 + top2 = 0x10; 1.171 + } 1.172 + } 1.173 + 1.174 + if (top2 & (BLDMOD>>8)) 1.175 + color = gfxAlphaBlend(color, back, 1.176 + coeff[COLEV & 0x1F], 1.177 + coeff[(COLEV >> 8) & 0x1F]); 1.178 + } 1.179 + break; 1.180 + } 1.181 + case 2: 1.182 + if (BLDMOD & top) 1.183 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.184 + break; 1.185 + case 3: 1.186 + if (BLDMOD & top) 1.187 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.188 + break; 1.189 + } 1.190 + } 1.191 + else 1.192 + { 1.193 + // semi-transparent OBJ 1.194 + u32 back = background; 1.195 + u8 top2 = 0x20; 1.196 + 1.197 + if (line2[x] < back) 1.198 + { 1.199 + back = line2[x]; 1.200 + top2 = 0x04; 1.201 + } 1.202 + 1.203 + if (top2 & (BLDMOD>>8)) 1.204 + color = gfxAlphaBlend(color, back, 1.205 + coeff[COLEV & 0x1F], 1.206 + coeff[(COLEV >> 8) & 0x1F]); 1.207 + else 1.208 + { 1.209 + switch ((BLDMOD >> 6) & 3) 1.210 + { 1.211 + case 2: 1.212 + if (BLDMOD & top) 1.213 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.214 + break; 1.215 + case 3: 1.216 + if (BLDMOD & top) 1.217 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.218 + break; 1.219 + } 1.220 + } 1.221 + } 1.222 + 1.223 + lineMix[x] = color; 1.224 + } 1.225 + gfxBG2Changed = 0; 1.226 + gfxLastVCOUNT = VCOUNT; 1.227 +} 1.228 + 1.229 +void mode3RenderLineAll() 1.230 +{ 1.231 + u16 *palette = (u16 *)paletteRAM; 1.232 + 1.233 + if (DISPCNT & 0x80) 1.234 + { 1.235 + for (int x = 0; x < 240; x++) 1.236 + { 1.237 + lineMix[x] = 0x7fff; 1.238 + } 1.239 + gfxLastVCOUNT = VCOUNT; 1.240 + return; 1.241 + } 1.242 + 1.243 + bool inWindow0 = false; 1.244 + bool inWindow1 = false; 1.245 + 1.246 + if (layerEnable & 0x2000) 1.247 + { 1.248 + u8 v0 = WIN0V >> 8; 1.249 + u8 v1 = WIN0V & 255; 1.250 + inWindow0 = ((v0 == v1) && (v0 >= 0xe8)); 1.251 + if (v1 >= v0) 1.252 + inWindow0 |= (VCOUNT >= v0 && VCOUNT < v1); 1.253 + else 1.254 + inWindow0 |= (VCOUNT >= v0 || VCOUNT < v1); 1.255 + } 1.256 + if (layerEnable & 0x4000) 1.257 + { 1.258 + u8 v0 = WIN1V >> 8; 1.259 + u8 v1 = WIN1V & 255; 1.260 + inWindow1 = ((v0 == v1) && (v0 >= 0xe8)); 1.261 + if (v1 >= v0) 1.262 + inWindow1 |= (VCOUNT >= v0 && VCOUNT < v1); 1.263 + else 1.264 + inWindow1 |= (VCOUNT >= v0 || VCOUNT < v1); 1.265 + } 1.266 + 1.267 + if (layerEnable & 0x0400) 1.268 + { 1.269 + int changed = gfxBG2Changed; 1.270 + 1.271 + if (gfxLastVCOUNT > VCOUNT) 1.272 + changed = 3; 1.273 + 1.274 + gfxDrawRotScreen16Bit(BG2CNT, BG2X_L, BG2X_H, 1.275 + BG2Y_L, BG2Y_H, BG2PA, BG2PB, 1.276 + BG2PC, BG2PD, 1.277 + gfxBG2X, gfxBG2Y, changed, 1.278 + line2); 1.279 + } 1.280 + 1.281 + gfxDrawSprites(lineOBJ); 1.282 + gfxDrawOBJWin(lineOBJWin); 1.283 + 1.284 + u8 inWin0Mask = WININ & 0xFF; 1.285 + u8 inWin1Mask = WININ >> 8; 1.286 + u8 outMask = WINOUT & 0xFF; 1.287 + 1.288 + u32 background = (READ16LE(&palette[0]) | 0x30000000); 1.289 + 1.290 + for (int x = 0; x < 240; x++) 1.291 + { 1.292 + u32 color = background; 1.293 + u8 top = 0x20; 1.294 + u8 mask = outMask; 1.295 + 1.296 + if (!(lineOBJWin[x] & 0x80000000)) 1.297 + { 1.298 + mask = WINOUT >> 8; 1.299 + } 1.300 + 1.301 + if (inWindow1) 1.302 + { 1.303 + if (gfxInWin1[x]) 1.304 + mask = inWin1Mask; 1.305 + } 1.306 + 1.307 + if (inWindow0) 1.308 + { 1.309 + if (gfxInWin0[x]) 1.310 + { 1.311 + mask = inWin0Mask; 1.312 + } 1.313 + } 1.314 + 1.315 + if ((mask & 4) && (line2[x] < color)) 1.316 + { 1.317 + color = line2[x]; 1.318 + top = 0x04; 1.319 + } 1.320 + 1.321 + if ((mask & 16) && ((u8)(lineOBJ[x]>>24) < (u8)(color >>24))) 1.322 + { 1.323 + color = lineOBJ[x]; 1.324 + top = 0x10; 1.325 + } 1.326 + 1.327 + if (mask & 32) 1.328 + { 1.329 + if (!(color & 0x00010000)) 1.330 + { 1.331 + switch ((BLDMOD >> 6) & 3) 1.332 + { 1.333 + case 0: 1.334 + break; 1.335 + case 1: 1.336 + { 1.337 + if (top & BLDMOD) 1.338 + { 1.339 + u32 back = background; 1.340 + u8 top2 = 0x20; 1.341 + 1.342 + if ((mask & 4) && line2[x] < back) 1.343 + { 1.344 + if (top != 0x04) 1.345 + { 1.346 + back = line2[x]; 1.347 + top2 = 0x04; 1.348 + } 1.349 + } 1.350 + 1.351 + if ((mask & 16) && (u8)(lineOBJ[x]>>24) < (u8)(back >> 24)) 1.352 + { 1.353 + if (top != 0x10) 1.354 + { 1.355 + back = lineOBJ[x]; 1.356 + top2 = 0x10; 1.357 + } 1.358 + } 1.359 + 1.360 + if (top2 & (BLDMOD>>8)) 1.361 + color = gfxAlphaBlend(color, back, 1.362 + coeff[COLEV & 0x1F], 1.363 + coeff[(COLEV >> 8) & 0x1F]); 1.364 + } 1.365 + break; 1.366 + } 1.367 + case 2: 1.368 + if (BLDMOD & top) 1.369 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.370 + break; 1.371 + case 3: 1.372 + if (BLDMOD & top) 1.373 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.374 + break; 1.375 + } 1.376 + } 1.377 + else 1.378 + { 1.379 + // semi-transparent OBJ 1.380 + u32 back = background; 1.381 + u8 top2 = 0x20; 1.382 + 1.383 + if ((mask & 4) && line2[x] < back) 1.384 + { 1.385 + back = line2[x]; 1.386 + top2 = 0x04; 1.387 + } 1.388 + 1.389 + if (top2 & (BLDMOD>>8)) 1.390 + color = gfxAlphaBlend(color, back, 1.391 + coeff[COLEV & 0x1F], 1.392 + coeff[(COLEV >> 8) & 0x1F]); 1.393 + else 1.394 + { 1.395 + switch ((BLDMOD >> 6) & 3) 1.396 + { 1.397 + case 2: 1.398 + if (BLDMOD & top) 1.399 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.400 + break; 1.401 + case 3: 1.402 + if (BLDMOD & top) 1.403 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.404 + break; 1.405 + } 1.406 + } 1.407 + } 1.408 + } 1.409 + else if (color & 0x00010000) 1.410 + { 1.411 + // semi-transparent OBJ 1.412 + u32 back = background; 1.413 + u8 top2 = 0x20; 1.414 + 1.415 + if ((mask & 4) && line2[x] < back) 1.416 + { 1.417 + back = line2[x]; 1.418 + top2 = 0x04; 1.419 + } 1.420 + 1.421 + if (top2 & (BLDMOD>>8)) 1.422 + color = gfxAlphaBlend(color, back, 1.423 + coeff[COLEV & 0x1F], 1.424 + coeff[(COLEV >> 8) & 0x1F]); 1.425 + else 1.426 + { 1.427 + switch ((BLDMOD >> 6) & 3) 1.428 + { 1.429 + case 2: 1.430 + if (BLDMOD & top) 1.431 + color = gfxIncreaseBrightness(color, coeff[COLY & 0x1F]); 1.432 + break; 1.433 + case 3: 1.434 + if (BLDMOD & top) 1.435 + color = gfxDecreaseBrightness(color, coeff[COLY & 0x1F]); 1.436 + break; 1.437 + } 1.438 + } 1.439 + } 1.440 + 1.441 + lineMix[x] = color; 1.442 + } 1.443 + gfxBG2Changed = 0; 1.444 + gfxLastVCOUNT = VCOUNT; 1.445 +} 1.446 +