Mercurial > hg > Members > kono > Cerium
annotate Renderer/Engine/task/DrawSpan.cc @ 616:f21603a335aa
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sat, 14 Nov 2009 20:17:37 +0900 |
| parents | f7d78b3c1106 |
| children | 0decff4e867b |
| rev | line source |
|---|---|
| 507 | 1 #include <stdlib.h> |
| 2 #include <string.h> | |
| 3 #include "DrawSpan.h" | |
| 4 #include "polygon_pack.h" | |
| 5 #include "texture.h" | |
| 6 #include "viewer_types.h" | |
| 7 #include "Func.h" | |
| 8 #include "sys.h" | |
| 9 #include "global_alloc.h" | |
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10 #include "SchedTask.h" |
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11 #include "Tapestry.h" |
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12 #include "SpanPack.h" |
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13 |
| 507 | 14 |
| 15 SchedDefineTask(DrawSpan); | |
| 16 | |
| 17 #define TEX_LOAD1 0 | |
| 18 #define TEX_LOAD2 1 | |
| 19 #define SPAN_PACK_LOAD 2 | |
| 20 #define FB_STORE 3 | |
| 21 | |
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22 typedef struct { |
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23 int **linebuf; |
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24 float *zRow; |
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25 TileListPtr tileList; |
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26 int doneWrite; |
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27 } G, *Gptr; |
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28 |
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29 static int** linebuf_init(SchedTask *smanager, int width, int height, int rgb); |
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30 static float* zRow_init(SchedTask *smanager, int width, int height); |
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31 // static TilePtr set_rgb(memaddr addr, int wait_tag); |
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32 // static void set_rgbs(memaddr addr, uint32 *max_addr, int wait_tag); |
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33 static uint32 get_rgb(int tx, int ty, TilePtr tile); |
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34 // static TilePtr isAvailableTile(memaddr addr); |
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35 static memaddr getTile(int tx, int ty, int tw, memaddr tex_addr_top); |
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36 static int getTexBlock(int tx, int ty, int twidth); |
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37 static void updateBuffer(Gptr g, float zpos, int rangex, int x, int y, |
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38 int tex_x, int tex_y, float normal_x, float nomral_x, float normal_z, TilePtr tile); |
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39 |
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40 |
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41 // static void reboot(SpanPackPtr spack, int cur_span_x); |
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42 |
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43 static int drawDot1(SchedTask *smanager, Gptr g, SpanPtr span, int startx, int endx, int wait_tag); |
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44 //static void drawDot2(SchedTask *smanager, SpanPtr span, int startx, int endx, int js, int wait_tag); |
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45 static int drawLine1(SchedTask *smanager, Gptr g, SpanPtr span, int startx, int endx, int wait_tag); |
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46 // static void drawLine2(SchedTask *smanager, SpanPtr span, int startx, int endx, int js, int wait_tag); |
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47 static int infinity_light_calc(int color,float normal_x, float normal_y, float normal_z); |
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48 |
| 507 | 49 |
| 50 /** | |
| 51 * テクスチャは、TEXTURE_SPLIT_PIXEL^2 のブロックに分割する | |
| 52 * | |
| 53 * +---+---+---+---+---+---+ | |
| 54 * | 0 | 1 | 2 | 3 | 4 | 5 | | |
| 55 * +---+---+---+---+---+---+ | |
| 56 * | | | | | |11 | | |
| 57 * +---+---+---+---+---+---+ | |
| 58 * | | | | | |17 | | |
| 59 * +---+---+---+---+---+---+ | |
| 60 * | | | | | |23 | | |
| 61 * +---+---+---+---+---+---+ | |
| 62 * | | | | | |29 | | |
| 63 * +---+---+---+---+---+---+ | |
| 64 * | | | | | |35 | | |
| 65 * +---+---+---+---+---+---+ | |
| 66 * | |
| 67 * 一辺を TEXTURE_SPLIT とする | |
| 68 * 各ブロックの数字がブロックIDとなる。 | |
| 69 */ | |
| 70 | |
| 71 /** | |
| 72 * テクスチャの座標から、 | |
| 73 * テクスチャのどのブロックかを求める | |
| 74 * | |
| 75 * @param[in] tx X coordinates of texture | |
| 76 * @param[in] tx Y coordinates of texture | |
| 77 * @param[in] twidth Width of texture | |
| 78 * @return block ID | |
| 79 */ | |
| 80 static int | |
| 81 getTexBlock(int tx, int ty, int twidth) | |
| 82 { | |
| 83 int blockX, blockY; | |
| 84 | |
| 85 blockX = tx / TEXTURE_SPLIT_PIXEL; | |
| 86 blockY = ty / TEXTURE_SPLIT_PIXEL; | |
| 87 | |
| 88 return blockX + (twidth/TEXTURE_SPLIT_PIXEL)*blockY; | |
| 89 } | |
| 90 | |
| 91 /** | |
| 92 * block ID と、テクスチャの TOP address から | |
| 93 * (tx,ty) で使われるテクスチャの Tile addres を求める | |
| 94 * | |
| 95 * @param[in] tx X coordinates of texture | |
| 96 * @param[in] tx Y coordinates of texture | |
| 97 * @param[in] tw Width of texture | |
| 98 * @param[in] tex_addr_top (tx,ty) で使うテクスチャの先頭address | |
| 99 * @return block ID | |
| 100 */ | |
| 101 static memaddr | |
| 102 getTile(int tx, int ty, int tw, memaddr tex_addr_top) | |
| 103 { | |
| 104 int block = getTexBlock(tx, ty, tw); | |
| 105 return tex_addr_top + block * TEXTURE_BLOCK_SIZE * sizeof(uint32); | |
| 106 } | |
| 107 | |
| 108 /** | |
| 109 * FrameBuffer に書き込む rgb の領域初期化 | |
| 110 * | |
| 111 * @param width Width of Buffer | |
| 112 * @param height Height of Buffer | |
| 113 * @param rgb Initial value of RGB at Buffer | |
| 114 * @return Buffer | |
| 115 */ | |
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116 static int ** |
| 507 | 117 linebuf_init(SchedTask *smanager, int width, int height, int rgb) |
| 118 { | |
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119 int **linebuf = (int**)smanager->allocate(height*sizeof(int*)); |
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120 for(int h = 0;h<height;h++) { |
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121 int *buf = linebuf[h] = (int*)smanager->get_output(h); |
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122 for (int i = 0; i < width; i++) { |
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123 buf[i] = rgb; |
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124 } |
| 507 | 125 } |
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126 return linebuf; |
| 507 | 127 } |
| 128 | |
| 129 /** | |
| 130 * Z-Buffer の初期化 | |
| 131 * | |
| 132 * @param width Width of Z-Buffer | |
| 133 * @param height Height of Z-Buffer | |
| 134 * @return Z-Buffer | |
| 135 */ | |
| 136 static float* | |
| 137 zRow_init(SchedTask *smanager, int width, int height) | |
| 138 { | |
| 139 float *buf = (float*)smanager->allocate(sizeof(float)*width*height); | |
| 140 float def = 65535.0f; | |
| 141 | |
| 142 for (int i = 0; i < width*height; i++) { | |
| 143 buf[i] = def; | |
| 144 } | |
| 145 | |
| 146 return buf; | |
| 147 } | |
| 148 | |
| 149 | |
| 150 static uint32 | |
| 151 get_rgb(int tx, int ty, TilePtr tile) | |
| 152 { | |
| 153 uint32 *data = (uint32 *)tile->data; | |
| 154 return data[(TEXTURE_SPLIT_PIXEL)*ty+tx]; | |
| 155 } | |
| 156 | |
| 157 | |
| 158 | |
| 159 /** | |
| 160 * zRow と Linebuf を更新する | |
| 161 * | |
| 162 * @param zpos 更新する pixel のZ座標 | |
| 163 * @param rangex このタスクが処理する描画領域の x の長さ | |
| 164 * @param x pixel の、描画領域内での x 座標 | |
| 165 * @param y 〃 の、y 座標 | |
| 166 * @param tex_x pixel が使用するテクスチャの、Tile (8x8) 内での x 座標 | |
| 167 * @param tex_y 〃 の y 座標 | |
| 168 * @param tex_addr テクスチャのアドレス(MainMemory) | |
| 169 */ | |
| 170 static void | |
| 171 updateBuffer(Gptr g, float zpos, int rangex, int x, int y, int tex_x, int tex_y, | |
| 172 float normal_x, float normal_y, float normal_z, TilePtr tile) | |
| 173 { | |
| 174 | |
| 175 int color = get_rgb(tex_x, tex_y, tile); | |
| 176 /*下位4bitを抽出*/ | |
| 599 | 177 int alpha = color & 0x000000ff; |
| 507 | 178 /*完全に透けているか判断*/ |
| 179 int flag = (alpha != 0); | |
| 180 | |
| 181 color = infinity_light_calc(color,normal_x,normal_y,normal_z); | |
| 182 | |
| 183 g->zRow[x + (rangex*y)] = zpos*flag + g->zRow[x + (rangex*y)]*(1-flag); | |
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184 int *point = &g->linebuf[y][x] ; |
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185 *point = color*flag + *point *(1-flag); |
| 507 | 186 |
| 187 } | |
| 188 | |
| 189 /** | |
| 190 * 長さが 1 の Span の描画 (要するに 1 pixel) | |
| 191 * | |
| 192 * @param span Span | |
| 193 * @param startx 描画開始範囲 | |
| 194 * @param endx 描画終了範囲 | |
| 195 */ | |
| 196 static int | |
| 197 drawDot1(SchedTask *smanager, Gptr g, SpanPtr span, int startx, int endx, int wait_tag) | |
| 198 { | |
| 199 int rangex = endx - startx + 1; | |
| 200 | |
| 201 float normal_x = span->normal_x; | |
| 202 float normal_y = span->normal_y; | |
| 203 float normal_z = span->normal_z; | |
| 204 | |
| 205 | |
| 206 /* span->x に対応する Texture の座標 (tex_xpos, tex_ypos) */ | |
| 207 int tex_xpos, tex_ypos; | |
| 208 | |
| 209 // span の始点に対応する Texture の座標 (tex1, tey1) | |
| 210 float tex = span->tex_x1; | |
| 211 float tey = span->tex_y1; | |
| 212 | |
| 213 // span の始点に対応する z 座標 | |
| 214 float zpos = span->start_z; | |
| 215 | |
| 216 /* Tile 内での座標 */ | |
| 217 int localx = getLocalX(span->x-1); | |
| 218 int localy = getLocalY(span->y-1); | |
| 219 | |
| 220 /** | |
| 221 * (tex_xpos, tex_ypos) の、Tile 内(上の図参照)での座標と | |
| 222 * そのブロックのアドレス(MainMemory) | |
| 223 */ | |
| 224 int tex_localx; | |
| 225 int tex_localy; | |
| 226 memaddr tex_addr; | |
| 227 | |
| 228 if (span->x < startx || endx < span->x) { | |
| 229 return -1; | |
| 230 } | |
| 231 | |
| 232 tex_xpos = (int)((span->tex_width-1) * tex); | |
| 233 tex_ypos = (int)((span->tex_height-1) * tey); | |
| 234 | |
| 235 if (zpos < g->zRow[localx + (rangex*localy)]) { | |
| 236 tex_addr = getTile(tex_xpos, tex_ypos, | |
| 237 span->tex_width, (memaddr)span->tex_addr); | |
| 238 tex_localx = tex_xpos % TEXTURE_SPLIT_PIXEL; | |
| 239 tex_localy = tex_ypos % TEXTURE_SPLIT_PIXEL; | |
| 240 | |
| 241 TilePtr tile = smanager->get_segment(tex_addr,g->tileList); | |
| 242 smanager->wait_segment(tile); | |
| 243 | |
| 244 updateBuffer(g, zpos, rangex, localx, localy, | |
| 245 tex_localx, tex_localy, | |
| 246 normal_x,normal_y,normal_z,tile); | |
| 247 } | |
| 248 | |
| 249 return -1; | |
| 250 } | |
| 251 | |
| 252 #if 0 | |
| 253 static void | |
| 254 drawDot2(SchedTask *smanager, SpanPtr span, int startx, int end, int js, int wait_tag) | |
| 255 { | |
| 256 //printf("%d\n", js); | |
| 257 } | |
| 258 #endif | |
| 259 | |
| 260 /** | |
| 261 * 長さが 1 より大きい Span の描画 | |
| 262 * | |
| 263 * 本来の目的として、この関数(drawLine1) では | |
| 264 * : 既に SPE 上に Tile のある pixel だけ描画 | |
| 265 * : それ以外は、ここで予め DMA load しておき、 | |
| 266 * : drawLine2 で一気に描画する | |
| 267 * ってものだったんだけど、どうも上手く行かなかったので | |
| 268 * 今は drawLine1 で load -> wait -> rendering を全部やってます | |
| 269 * (rendering といっても、rendering buffer に書き込むだけで | |
| 270 * まだ main memory (frame buffer) に dma store してるわけではない) | |
| 271 * | |
| 272 * @param span Span | |
| 273 * @param startx 描画開始範囲 | |
| 274 * @param endx 描画終了範囲 | |
| 275 * @return 「span のどの位置まで rendering が終わったか」の x 座標 | |
| 276 */ | |
| 277 static int | |
| 278 drawLine1(SchedTask *smanager, Gptr g, SpanPtr span, int startx, int endx, int wait_tag) | |
| 279 { | |
| 280 int x = span->x; | |
| 281 int rangex = endx - startx + 1; | |
| 282 int x_len = span->length_x; | |
| 283 | |
| 284 float normal_x = span->normal_x; | |
| 285 float normal_y = span->normal_y; | |
| 286 float normal_z = span->normal_z; | |
| 287 | |
| 288 | |
| 289 int js = (x < startx) ? startx - x : 0; | |
| 290 int je = (x + x_len > endx) ? endx - x : x_len; | |
| 291 | |
| 292 /* span->x に対応する Texture の座標 (tex_xpos, tex_ypos) */ | |
| 293 int tex_xpos, tex_ypos; | |
| 294 | |
| 295 // span の始点に対応する座標 (tex1, tey1) | |
| 296 float tex1 = span->tex_x1; | |
| 297 float tey1 = span->tex_y1; | |
| 298 | |
| 299 // span の終点に対応する座標 (tex2, tey2) | |
| 300 float tex2 = span->tex_x2; | |
| 301 float tey2 = span->tex_y2; | |
| 302 | |
| 303 // span の始点、終点に対応する z 座標 | |
| 304 float zpos1 = span->start_z; | |
| 305 float zpos2 = span->end_z; | |
| 306 | |
| 307 // Tile 内での座標 | |
| 308 int localx, localy = getLocalY(span->y-1); | |
| 309 | |
| 310 int ret = je+1; | |
| 311 | |
| 312 //for (int j = js; j <= je; j++) { | |
| 313 for (int j = je; j >= js; j--) { | |
| 314 float tex_x, tex_y, tex_z; | |
| 315 | |
| 316 localx = getLocalX(x-1+j); | |
| 317 | |
| 318 tex_z = zpos1*(x_len-1-j)/(x_len-1) + zpos2*j/(x_len-1); | |
| 319 | |
| 320 tex_x = tex1*(x_len-1-j)/(x_len-1) + tex2*j/(x_len-1); | |
| 321 tex_y = tey1*(x_len-1-j)/(x_len-1) + tey2*j/(x_len-1); | |
| 322 if (tex_x > 1) tex_x = 1; | |
| 323 if (tex_x < 0) tex_x = 0; | |
| 324 if (tex_y > 1) tex_y = 1; | |
| 325 if (tex_y < 0) tex_y = 0; | |
| 326 tex_xpos = (int)((span->tex_width-1) * tex_x); | |
| 327 tex_ypos = (int)((span->tex_height-1) * tex_y); | |
| 328 | |
| 329 if (tex_z < g->zRow[localx + (rangex*localy)]) { | |
| 330 // (tex_xpos, tex_ypos) の、Tile 内(上の図参照)での座標と | |
| 331 // そのブロックのアドレス(MainMemory) | |
| 332 memaddr tex_addr; | |
| 333 int tex_localx; | |
| 334 int tex_localy; | |
| 335 | |
| 336 tex_addr = getTile(tex_xpos, tex_ypos, | |
| 337 span->tex_width, (memaddr)span->tex_addr); | |
| 338 tex_localx = tex_xpos % TEXTURE_SPLIT_PIXEL; | |
| 339 tex_localy = tex_ypos % TEXTURE_SPLIT_PIXEL; | |
| 340 TilePtr tile = smanager->get_segment(tex_addr,g->tileList); | |
| 341 smanager->wait_segment(tile); | |
| 342 | |
| 343 updateBuffer(g, tex_z, rangex, localx, localy, | |
| 344 tex_localx, tex_localy, | |
| 345 normal_x, normal_y, normal_z, tile); | |
| 346 } | |
| 347 } | |
| 348 | |
| 349 return ret; | |
| 350 } | |
| 351 | |
| 352 static int | |
| 353 infinity_light_calc(int color,float normal_x, float normal_y, float normal_z) | |
| 354 { | |
| 355 unsigned char rgb[4]; | |
| 356 int light_rgb; | |
| 357 int flag; | |
| 358 float normal_vector[4] = {normal_x,normal_y,normal_z,0}; | |
| 359 // 光のベクトル,きめうちしちゃった。どうにかする | |
| 360 float light_vector[4] = {0,0,-1,0}; | |
| 361 float inner_product; | |
| 362 | |
| 363 // 引数で受け取った color の rgb 情報の抜き出し | |
| 364 rgb[0] = (color & 0xff000000) >> 24; | |
| 365 rgb[1] = (color & 0x00ff0000) >> 16; | |
| 366 rgb[2] = (color & 0x0000ff00) >> 8; | |
| 367 rgb[3] = (color & 0x000000ff); | |
| 368 | |
| 369 // 法線ベクトルと光源ベクトルとの内積をとる | |
| 370 inner_product = innerProduct(normal_vector,light_vector); | |
| 371 // 内積がマイナスの場合は色がない。 | |
| 372 flag = (inner_product > 0); | |
| 373 | |
| 374 // 内積を rgb にかけていく | |
| 375 rgb[0] = (unsigned char)(rgb[0]*inner_product*flag); | |
| 376 rgb[1] = (unsigned char)(rgb[1]*inner_product*flag); | |
| 377 rgb[2] = (unsigned char)(rgb[2]*inner_product*flag); | |
| 378 | |
| 379 //計算した rgb を light_rgb にまとめる。 | |
| 380 light_rgb = (rgb[0] << 24) + (rgb[1] << 16) + (rgb[2] << 8) + (rgb[3]); | |
| 381 | |
| 382 return light_rgb; | |
| 383 } | |
| 384 | |
| 385 | |
| 386 static int | |
| 387 run(SchedTask *smanager, void *rbuf, void *wbuf) | |
| 388 { | |
| 389 Gptr g = (Gptr)smanager->allocate(sizeof(G)); | |
| 390 | |
| 391 SpanPackPtr spack = (SpanPackPtr)smanager->get_input(0); | |
| 392 SpanPackPtr next_spack = (SpanPackPtr)smanager->allocate(sizeof(SpanPack)); | |
| 393 SpanPackPtr free_spack = next_spack; // next_spack の free() 用 | |
| 394 Span *span; | |
| 395 | |
| 396 Span nop_span; | |
| 397 nop_span.length_x = 1; | |
| 398 | |
| 399 int (*drawFunc1[2])(SchedTask *, Gptr, SpanPtr, int, int, int) = { | |
| 400 &drawDot1, &drawLine1 | |
| 401 }; | |
| 402 | |
|
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403 // uint32 display = smanager->get_param(0); |
| 507 | 404 int screen_width = smanager->get_param(1); |
| 405 int rangex_start = smanager->get_param(2); | |
| 406 int rangex_end = smanager->get_param(3); | |
| 407 | |
| 408 // このタスクが担当する x の範囲 | |
| 409 int rangex = rangex_end - rangex_start + 1; | |
| 410 | |
| 411 // y の範囲 | |
| 412 int rangey = smanager->get_param(4); | |
| 413 g->tileList = (TileListPtr)smanager->global_get(GLOBAL_TILE_LIST); | |
| 414 | |
| 415 g->zRow = zRow_init(smanager, rangex, rangey); | |
| 416 g->linebuf = linebuf_init(smanager, rangex, rangey, 0); | |
| 417 | |
| 418 int tl_tag[2] = {TEX_LOAD1, TEX_LOAD2}; | |
| 419 int tl_tag_flg1 = 0; | |
| 420 int tl_tag_flg2 = 1; | |
| 421 | |
| 422 do { | |
| 423 /** | |
| 424 * SpanPack->next が存在する場合、 | |
| 425 * 現在の SpanPack を処理してる間に | |
| 426 * 次の SpanPack の DMA 転送を行う | |
| 427 */ | |
| 428 if (spack->next != NULL) { | |
|
603
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|
429 smanager->dma_load(next_spack, (memaddr)spack->next, |
| 507 | 430 sizeof(SpanPack), SPAN_PACK_LOAD); |
| 431 } else { | |
| 432 next_spack = NULL; | |
| 433 } | |
| 434 | |
| 435 SpanPtr resume_span = &nop_span; | |
| 436 int resume_span_x = 0; | |
| 437 | |
| 438 for (int t = 0; t < spack->info.size; t++) { | |
| 439 SpanPtr next_span; | |
| 440 int next_span_x; | |
| 441 | |
| 442 span = &spack->span[t]; | |
| 443 | |
| 444 /** | |
| 445 * span の長さによって、drawLine か drawDot を選択している | |
| 446 */ | |
| 447 next_span_x | |
| 448 = (*drawFunc1[(span->length_x != 1)])( | |
| 449 smanager, g, | |
| 450 span, rangex_start, rangex_end, tl_tag[tl_tag_flg1]); | |
| 451 next_span = span; | |
| 452 | |
| 453 resume_span = next_span; | |
| 454 resume_span_x = next_span_x; | |
| 455 | |
| 456 //smanager->dma_wait(tl_tag[tl_tag_flg1]); | |
| 457 | |
| 458 tl_tag_flg1 ^= 1; | |
| 459 tl_tag_flg2 ^= 1; | |
| 460 } | |
| 461 | |
| 462 // 現在 drawLine2、drawDot2 は機能してないので | |
| 463 //(this->*drawFunc2[(resume_span->length_x != 1)])( | |
| 464 //resume_span, rangex_start, rangex_end, resume_span_x, | |
| 465 //tl_tag[tl_tag_flg1]); | |
| 466 | |
| 467 smanager->dma_wait(SPAN_PACK_LOAD); | |
| 468 | |
| 469 SpanPackPtr tmp_spack = spack; | |
| 470 spack = next_spack; | |
| 471 next_spack = tmp_spack; | |
| 472 } while (spack); | |
| 473 | |
| 474 | |
| 475 free(g->zRow); | |
|
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parents:
614
diff
changeset
|
476 free(g->linebuf); |
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parents:
614
diff
changeset
|
477 free(g); |
| 507 | 478 |
| 479 //FINISH: | |
| 480 /** | |
| 481 * goto FINISH; の時は reboot なので | |
| 482 * linebuf, zRow は free() しない | |
| 483 */ | |
| 484 | |
| 485 free(free_spack); | |
| 486 | |
| 487 | |
| 488 return 0; | |
| 489 } | |
| 490 | |
| 491 /* end */ |