Mercurial > hg > dmlib
annotate efu.c @ 50:4cbdaa3f5d74
Cleanups.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 01 Oct 2012 03:46:10 +0300 |
| parents | d427763f113a |
| children | daeb5d4f6bad |
| rev | line source |
|---|---|
| 0 | 1 #include "dmlib.h" |
| 2 #include "dmargs.h" | |
| 3 #include "dmvecmat.h" | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
4 #include "dmimage.h" |
| 0 | 5 #include <math.h> |
| 6 | |
| 7 #define DM_COLORS (256) | |
| 8 | |
| 9 char *optFontFile = "font.ttf", | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
10 *optBitmapFilename = "tnsp.png"; |
| 0 | 11 BOOL optBenchmark = FALSE; |
| 12 int optVFlags = SDL_SWSURFACE | SDL_HWPALETTE; | |
| 13 int optScrWidth = 640, optScrHeight = 480, optFontSize = 20, optScrDepth = 32; | |
| 14 int optBenchmarkLen = 20; | |
| 15 | |
| 16 DMOptArg optList[] = { | |
| 17 { 0, '?', "help", "Show this help", OPT_NONE }, | |
| 18 { 2, 'v', "verbose", "Be more verbose", OPT_NONE }, | |
| 19 { 3, 'f', "full", "Fullscreen", OPT_NONE }, | |
| 20 { 4, 'h', "hw", "Use SDL hardware surface", OPT_NONE }, | |
| 21 { 5, 's', "size", "Initial window size/resolution -s 640x480", OPT_ARGREQ }, | |
| 22 { 6, 'd', "depth", "Color depth of mode/window in bits (8/15/16/32)", OPT_ARGREQ }, | |
| 23 { 7, 'b', "bench", "Run in benchmark mode", OPT_NONE }, | |
| 24 }; | |
| 25 | |
| 26 const int optListN = sizeof(optList) / sizeof(optList[0]); | |
| 27 | |
| 28 | |
| 29 void argShowHelp() | |
| 30 { | |
| 31 dmArgsPrintHelp(stdout, optList, optListN); | |
| 32 } | |
| 33 | |
| 34 | |
| 35 BOOL argHandleOpt(const int optN, char *optArg, char *currArg) | |
| 36 { | |
| 37 switch (optN) { | |
| 38 case 0: | |
| 39 argShowHelp(); | |
| 40 exit(0); | |
| 41 break; | |
| 42 | |
| 43 case 2: | |
| 44 dmVerbosity++; | |
| 45 break; | |
| 46 | |
| 47 case 3: | |
| 48 optVFlags |= SDL_FULLSCREEN; | |
| 49 break; | |
| 50 | |
| 51 case 6: | |
| 52 if (optArg) | |
| 53 optScrDepth = atoi(optArg); | |
| 54 break; | |
| 55 | |
| 56 case 5: | |
| 57 { | |
| 58 int w, h; | |
| 59 if (sscanf(optArg, "%dx%d", &w, &h) == 2) | |
| 60 { | |
| 61 if (w < 320 || h < 200 || w > 3200 || h > 3200) | |
| 62 { | |
| 63 dmError("Invalid width or height: %d x %d\n", w, h); | |
| 64 return FALSE; | |
| 65 } | |
| 66 optScrWidth = w; | |
| 67 optScrHeight = h; | |
| 68 } | |
| 69 else | |
| 70 { | |
| 71 dmError("Invalid size argument '%s'.\n", optArg); | |
| 72 return FALSE; | |
| 73 } | |
| 74 } | |
| 75 break; | |
| 76 | |
| 77 case 7: | |
| 78 optBenchmark = TRUE; | |
| 79 break; | |
| 80 | |
| 81 default: | |
| 82 dmError("Unknown option '%s'.\n", currArg); | |
| 83 return FALSE; | |
| 84 } | |
| 85 | |
| 86 return TRUE; | |
| 87 } | |
| 88 | |
| 89 | |
| 90 void DM_MakePalette(SDL_Surface *scr) | |
| 91 { | |
| 92 SDL_Color pal[DM_COLORS]; | |
| 93 int n; | |
| 94 | |
| 95 for (n = 0; n < 256; n++) | |
| 96 { | |
| 97 pal[n].r = n; | |
| 98 pal[n].g = n; | |
| 99 pal[n].b = n; | |
| 100 } | |
| 101 | |
| 102 SDL_SetColors(scr, pal, 0, DM_COLORS); | |
| 103 } | |
| 104 | |
| 105 | |
| 106 void DM_PrintRect(FILE *f, SDL_Rect *r) | |
| 107 { | |
| 108 fprintf(f, "SDL_Rect <%d, %d : %d, %d>\n", | |
| 109 r->x, r->y, r->w, r->h); | |
| 110 } | |
| 111 | |
| 112 BOOL DM_InitializeVideo(SDL_Surface **screen) | |
| 113 { | |
| 114 *screen = SDL_SetVideoMode(optScrWidth, optScrHeight, optScrDepth, optVFlags | SDL_RESIZABLE); | |
| 115 if (*screen == NULL) | |
| 116 { | |
| 117 dmError("Can't SDL_SetVideoMode(): %s\n", SDL_GetError()); | |
| 118 return FALSE; | |
| 119 } | |
| 120 | |
| 121 #if 0 | |
| 122 SDL_Rect r; | |
| 123 r.x = -50; | |
| 124 r.y = 50; | |
| 125 r.w = 700; | |
| 126 r.h = 300; | |
| 127 DM_PrintRect(stderr, &r); | |
| 128 SDL_SetClipRect(*screen, &r); | |
| 129 DM_PrintRect(stderr, &r); | |
| 130 DM_PrintRect(stderr, &((*screen)->clip_rect)); | |
| 131 #endif | |
| 132 | |
| 133 return TRUE; | |
| 134 } | |
| 135 | |
| 136 void DM_Random(SDL_Surface *screen, int q) | |
| 137 { | |
| 138 Uint8 *pix = screen->pixels; | |
| 139 int xc, yc; | |
| 140 | |
| 141 for (yc = 0; yc < screen->h; yc++) | |
| 142 { | |
| 143 Uint8 *dp = pix; | |
| 144 | |
| 145 for (xc = 0; xc < screen->w; xc++) | |
| 146 *dp++ = yc + (xc ^ q) + (yc & q); | |
| 147 | |
| 148 pix += screen->pitch; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 void DM_Perlin(SDL_Surface *screen, float f) | |
| 153 { | |
| 154 Uint8 *pix = screen->pixels; | |
| 155 int xc, yc; | |
| 156 | |
| 157 for (yc = 0; yc < screen->h; yc++) | |
| 158 { | |
| 159 Uint8 *dp = pix; | |
| 160 | |
| 161 for (xc = 0; xc < screen->w; xc++) | |
| 162 { | |
| 163 *dp++ = 128 + dmPerlinNoise2D(xc, yc, 0.01, 0.1, 3) / 34.0; | |
| 164 } | |
| 165 | |
| 166 pix += screen->pitch; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 | |
| 171 #define QWIDTH 256 | |
| 172 #define QHEIGHT 160 | |
| 173 | |
| 174 typedef Uint8 DMBlockMap[QHEIGHT][QWIDTH]; | |
| 175 | |
| 176 | |
| 177 static DMFloat dmClip(DMFloat a) | |
| 178 { | |
| 179 return (a < 0.0f ? 0.0f : (a > 1.0f ? 1.0f : a)); | |
| 180 } | |
| 181 | |
| 182 | |
| 183 void dmMakeBumpMap(DMBlockMap map, DMFloat q, DMFloat m) | |
| 184 { | |
| 185 int x, y; | |
| 186 for (y = 0; y < QHEIGHT; y++) | |
| 187 for (x = 0; x < QWIDTH; x++) | |
| 188 { | |
| 189 DMFloat f = 0.40f + dmPerlinNoise2D(x, y, 1.1f, q, 2); | |
| 190 map[y][x] = (int) (dmClip(f) * m); | |
| 191 } | |
| 192 } | |
| 193 | |
| 194 | |
| 195 void dmShadowTraceHeightMap(DMBlockMap lightMap, DMBlockMap pheightMap, DMVector *light) | |
| 196 { | |
| 197 int i, j; | |
| 198 | |
| 199 light->z = 150; | |
| 200 | |
| 201 for (j = 0; j < QHEIGHT; j++) | |
| 202 for (i = 0; i < QWIDTH; i++) | |
| 203 { | |
| 204 DMVector vr, vl, va; | |
| 205 DMFloat vrayLen, vfactor; | |
| 206 int vlen; | |
| 207 BOOL wasHit; | |
| 208 | |
| 209 // Perform shadow occlusion via simplistic raytracing | |
| 210 vr.x = i; | |
| 211 vr.y = j; | |
| 212 vr.z = 200; //light->z; // - 10.0; | |
| 213 | |
| 214 // Calculate light vector vector | |
| 215 dm_vector_sub_r(&vl, &vr, light); | |
| 216 vrayLen = dm_vector_length(&vl); | |
| 217 | |
| 218 #if 1 | |
| 219 dm_vector_copy(&va, &vl); | |
| 220 dm_vector_normalize(&va); | |
| 221 dm_vector_copy(&vr, light); | |
| 222 | |
| 223 vlen = 0; | |
| 224 wasHit = FALSE; | |
| 225 do | |
| 226 { | |
| 227 float h; | |
| 228 | |
| 229 // If ray is inside the heightmap, get value | |
| 230 if (vr.x >= 0 && vr.y >= 0 && vr.x < QWIDTH && vr.y < QHEIGHT) | |
| 231 h = pheightMap[(int) vr.y][(int) vr.x]; | |
| 232 else | |
| 233 break; | |
| 234 | |
| 235 // Check for hits | |
| 236 if (h > vr.z) | |
| 237 wasHit = TRUE; | |
| 238 else | |
| 239 { | |
| 240 // Move forwards | |
| 241 dm_vector_add(&vr, &va); | |
| 242 vlen++; | |
| 243 } | |
| 244 } | |
| 245 while (!wasHit && vlen <= vrayLen); | |
| 246 | |
| 247 // Check if the ray hit something, e.g. is this point occluded? | |
| 248 if (wasHit && vlen < vrayLen) | |
| 249 { | |
| 250 vfactor = vlen * 0.05; | |
| 251 } | |
| 252 else | |
| 253 vfactor = vlen * 0.001; | |
| 254 #endif | |
| 255 | |
| 256 #if 0 | |
| 257 { | |
| 258 /* Calculate light's intensity based on the angle it "hits" | |
| 259 * | |
| 260 * 1) Calculate the vectors that form the imaginary "plane" | |
| 261 * 2) Cross-product -> normal vector of the plane | |
| 262 * 2) Normalize the normal vector | |
| 263 * 3) Calculate light vector's hit angle by dot product | |
| 264 */ | |
| 265 DMVector v1, v2; | |
| 266 DMFloat c; | |
| 267 | |
| 268 v1.x = 2.0f; | |
| 269 v1.y = 0.0f; | |
| 270 v1.z = (DMFloat) (pheightMap[j][i] - pheightMap[j][i + 1]); | |
| 271 | |
| 272 v2.x = 0.0f; | |
| 273 v2.y = 2.0f; | |
| 274 v2.z = (DMFloat) (pheightMap[j][i] - pheightMap[j + 1][i]); | |
| 275 | |
| 276 dm_vector_cross(&vr, &v1, &v2); | |
| 277 dm_vector_normalize(&vr); | |
| 278 dm_vector_normalize(&vl); | |
| 279 c = dm_vector_dot(&vl, &vr); | |
| 280 | |
| 281 vrayLen = 255 - (vrayLen * 0.1) * vrayLen + (c * 128.0f) + (vfactor * vfactor * 1255); | |
| 282 } | |
| 283 #else | |
| 284 vrayLen = 255 - vrayLen * vrayLen * (vfactor * vfactor); | |
| 285 if (vrayLen < 0) vrayLen = 0; | |
| 286 vrayLen -= pheightMap[j][i]; | |
| 287 #endif | |
| 288 | |
| 289 // Clip result | |
| 290 if (vrayLen < 0) | |
| 291 vrayLen = 0; | |
| 292 else if (vrayLen > 255.0f) | |
| 293 vrayLen = 255.0f; | |
| 294 | |
| 295 lightMap[j][i] = vrayLen; | |
| 296 } | |
| 297 } | |
| 298 | |
| 299 | |
| 300 int main(int argc, char *argv[]) | |
| 301 { | |
| 302 SDL_Surface *screen = NULL, *bmap = NULL, *logo = NULL; | |
| 303 TTF_Font *font = NULL; | |
| 304 SDL_Color fontcol={255,155,155,0}; | |
| 305 SDL_Event event; | |
| 306 int mouseX, mouseY; | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
307 BOOL initSDL = FALSE, initTTF = FALSE, exitFlag, showMap = FALSE; |
| 0 | 308 |
| 309 if (!dmArgsProcess(argc, argv, optList, optListN, | |
| 310 argHandleOpt, NULL, FALSE)) | |
| 311 exit(1); | |
| 312 | |
| 313 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0) | |
| 314 { | |
| 315 dmError("Could not initialize SDL: %s\n", SDL_GetError()); | |
| 316 goto error_exit; | |
| 317 } | |
| 318 initSDL = TRUE; | |
| 319 | |
| 320 | |
| 321 if (TTF_Init() < 0) | |
| 322 { | |
| 323 dmError("Could not initialize FreeType/TTF: %s\n", SDL_GetError()); | |
| 324 goto error_exit; | |
| 325 } | |
| 326 initTTF = TRUE; | |
| 327 | |
| 328 font = TTF_OpenFont(optFontFile, optFontSize); | |
| 329 if (font == NULL) | |
| 330 { | |
| 331 dmError("Could not load TTF font '%s' (%d): %s\n", | |
| 332 optFontFile, optFontSize, SDL_GetError()); | |
| 333 goto error_exit; | |
| 334 } | |
| 335 TTF_SetFontStyle(font, TTF_STYLE_NORMAL); | |
| 336 | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
337 |
|
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
338 DMResource *res = dmf_create_stdio(optBitmapFilename); |
|
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
339 if (res == NULL) |
| 0 | 340 { |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
341 dmError("Could not open resource file '%s'.\n", optBitmapFilename); |
| 0 | 342 goto error_exit; |
| 343 } | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
344 logo = dmLoadImage(res); |
|
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
345 dmf_close(res); |
| 0 | 346 if (logo == NULL) |
| 347 { | |
| 348 dmError("Could not load image file '%s'.\n", optBitmapFilename); | |
| 349 goto error_exit; | |
| 350 } | |
|
7
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
351 |
|
d427763f113a
Fix "efu" test, use dmImage instead of SDL_image.
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
352 |
| 0 | 353 if (optBenchmark) |
| 354 { | |
| 355 screen = SDL_CreateRGBSurface(SDL_SWSURFACE, optScrWidth, optScrHeight, optScrDepth, 0, 0, 0, 0); | |
| 356 if (screen == NULL) | |
| 357 { | |
| 358 dmError("Could not create screen surface.\n"); | |
| 359 goto error_exit; | |
| 360 } | |
| 361 | |
| 362 dmMsg(0, "Benchmark mode, not opening window.\n"); | |
| 363 } | |
| 364 else | |
| 365 { | |
| 366 if (!DM_InitializeVideo(&screen)) | |
| 367 goto error_exit; | |
| 368 | |
| 369 SDL_WM_SetCaption("Halleluja", "DMT"); | |
| 370 } | |
| 371 | |
| 372 dmPerlinInit(); | |
| 373 | |
| 374 bmap = SDL_CreateRGBSurface(SDL_SWSURFACE, QWIDTH, QHEIGHT, 8, 0, 0, 0, 0); | |
| 375 DM_MakePalette(bmap); | |
| 376 DM_Random(bmap, 15); | |
| 377 | |
| 378 DMVector light; | |
| 379 DMBlockMap heightMap; | |
| 380 light.x = light.y = 128; | |
| 381 light.z = 128; | |
| 382 dmMakeBumpMap(heightMap, 0.06, 254); | |
| 383 | |
| 384 | |
| 385 | |
| 386 int numFrames = 0, startTime = SDL_GetTicks(), endTime = 0; | |
| 387 exitFlag = FALSE; | |
| 388 | |
| 389 if (optBenchmark) | |
| 390 dmMsg(0, "Starting benchmark, running for %d seconds.\n", optBenchmarkLen); | |
| 391 | |
| 392 while (!exitFlag) | |
| 393 { | |
| 394 if (!optBenchmark) | |
| 395 { | |
| 396 while (SDL_PollEvent(&event)) | |
| 397 switch (event.type) | |
| 398 { | |
| 399 case SDL_KEYDOWN: | |
| 400 switch (event.key.keysym.sym) | |
| 401 { | |
| 402 case SDLK_ESCAPE: exitFlag = TRUE; break; | |
| 403 | |
| 404 case SDLK_F1: | |
| 405 DM_Random(bmap, (SDL_GetTicks() / 10) % 1000); | |
| 406 break; | |
| 407 | |
| 408 case SDLK_F2: | |
| 409 DM_Perlin(bmap, SDL_GetTicks() / 100); | |
| 410 break; | |
| 411 | |
| 412 case SDLK_F5: | |
| 413 showMap = !showMap; | |
| 414 break; | |
| 415 | |
| 416 default: | |
| 417 break; | |
| 418 } | |
| 419 | |
| 420 break; | |
| 421 | |
| 422 case SDL_VIDEORESIZE: | |
| 423 optScrWidth = event.resize.w; | |
| 424 optScrHeight = event.resize.h; | |
| 425 | |
| 426 if (!DM_InitializeVideo(&screen)) | |
| 427 goto error_exit; | |
| 428 | |
| 429 break; | |
| 430 | |
| 431 case SDL_VIDEOEXPOSE: | |
| 432 break; | |
| 433 | |
| 434 case SDL_QUIT: | |
| 435 exit(0); | |
| 436 } | |
| 437 | |
| 438 SDL_GetMouseState(&mouseX, &mouseY); | |
| 439 light.x = ((DMFloat) mouseX * QWIDTH) / (DMFloat) optScrWidth; | |
| 440 light.y = ((DMFloat) mouseY * QHEIGHT) / (DMFloat) optScrHeight; | |
| 441 } | |
| 442 | |
| 443 if (!optBenchmark && SDL_MUSTLOCK(screen) != 0 && SDL_LockSurface(screen) != 0) | |
| 444 { | |
| 445 dmError("Can't lock surface.\n"); | |
| 446 goto error_exit; | |
| 447 } | |
| 448 | |
| 449 | |
| 450 if (showMap) | |
| 451 memcpy(bmap->pixels, heightMap, QWIDTH * QHEIGHT); | |
| 452 else | |
| 453 dmShadowTraceHeightMap(bmap->pixels, logo->pixels, &light); | |
| 454 | |
| 455 dmScaledBlitSurfaceAny(bmap, 0, 0, screen->w, screen->h, screen, DMD_NONE); | |
| 456 | |
| 457 | |
| 458 | |
| 459 if (!optBenchmark) | |
| 460 { | |
| 461 dmDrawTTFText(screen, font, fontcol, 0, 0, "%3.1f FPS", | |
| 462 (float) (numFrames * 1000.0f) / (float) (endTime - startTime)); | |
| 463 | |
| 464 if (SDL_MUSTLOCK(screen) != 0) | |
| 465 SDL_UnlockSurface(screen); | |
| 466 | |
| 467 SDL_Flip(screen); | |
| 468 SDL_Delay(10); | |
| 469 } | |
| 470 | |
| 471 endTime = SDL_GetTicks(); | |
| 472 numFrames++; | |
| 473 | |
| 474 if (optBenchmark) | |
| 475 { | |
| 476 if (endTime - startTime > optBenchmarkLen * 1000) | |
| 477 exitFlag = TRUE; | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 // Print benchmark results | |
| 482 dmMsg(0, "%d frames in %d ms, fps = %1.3f\n", | |
| 483 numFrames, endTime - startTime, | |
| 484 (float) (numFrames * 1000.0f) / (float) (endTime - startTime)); | |
| 485 | |
| 486 | |
| 487 error_exit: | |
| 488 dmMsg(0, "Shutting down dmlib.\n"); | |
| 489 if (screen) | |
| 490 SDL_FreeSurface(screen); | |
| 491 | |
| 492 if (logo) | |
| 493 SDL_FreeSurface(logo); | |
| 494 | |
| 495 if (font) | |
| 496 TTF_CloseFont(font); | |
| 497 | |
| 498 if (initSDL) | |
| 499 SDL_Quit(); | |
| 500 | |
| 501 if (initTTF) | |
| 502 TTF_Quit(); | |
| 503 | |
| 504 return 0; | |
| 505 } |