Mercurial > hg > dmlib
annotate tests/blittest.c @ 2294:7f6ba3b32f54
Cleanups.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Wed, 03 Jul 2019 10:28:43 +0300 |
| parents | 186cf6a7d634 |
| children | b7cd5dd0b82e |
| rev | line source |
|---|---|
| 0 | 1 #include "dmlib.h" |
| 2 #include "dmargs.h" | |
| 3 #include "dmvecmat.h" | |
|
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Do include "dmtext.h" where necessary.
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4 #include "dmtext.h" |
| 896 | 5 #include "dmperlin.h" |
| 0 | 6 #include <math.h> |
| 7 | |
| 8 #define DM_COLORS (256) | |
| 9 | |
|
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10 char *optFontFile = "font.ttf"; |
| 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; | |
| 896 | 15 DMPerlinContext perlinCtx; |
| 0 | 16 |
|
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The argument handling API in dmargs* was synced with th-libs.
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17 static const DMOptArg optList[] = { |
| 0 | 18 { 0, '?', "help", "Show this help", OPT_NONE }, |
| 19 { 2, 'v', "verbose", "Be more verbose", OPT_NONE }, | |
| 20 { 3, 'f', "full", "Fullscreen", OPT_NONE }, | |
| 21 { 4, 'h', "hw", "Use SDL hardware surface", OPT_NONE }, | |
| 22 { 5, 's', "size", "Initial window size/resolution -s 640x480", OPT_ARGREQ }, | |
| 58 | 23 { 6, 'd', "depth", "Color depth of mode/window in bits (8/32)", OPT_ARGREQ }, |
| 0 | 24 { 7, 'b', "bench", "Run in benchmark mode", OPT_NONE }, |
| 25 }; | |
| 26 | |
| 27 const int optListN = sizeof(optList) / sizeof(optList[0]); | |
| 28 | |
| 29 | |
| 30 void argShowHelp() | |
| 31 { | |
|
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The argument handling API in dmargs* was synced with th-libs.
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changeset
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32 dmArgsPrintHelp(stdout, optList, optListN, 0); |
| 0 | 33 } |
| 34 | |
| 35 | |
| 36 BOOL argHandleOpt(const int optN, char *optArg, char *currArg) | |
| 37 { | |
| 38 switch (optN) { | |
| 39 case 0: | |
| 40 argShowHelp(); | |
| 41 exit(0); | |
| 42 break; | |
| 43 | |
| 44 case 2: | |
| 45 dmVerbosity++; | |
| 46 break; | |
| 2046 | 47 |
| 0 | 48 case 3: |
| 49 optVFlags |= SDL_FULLSCREEN; | |
| 50 break; | |
| 51 | |
| 52 case 6: | |
| 53 if (optArg) | |
| 54 optScrDepth = atoi(optArg); | |
| 55 break; | |
| 56 | |
| 57 case 5: | |
| 58 { | |
| 59 int w, h; | |
| 60 if (sscanf(optArg, "%dx%d", &w, &h) == 2) | |
| 61 { | |
| 62 if (w < 320 || h < 200 || w > 3200 || h > 3200) | |
| 63 { | |
|
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64 dmErrorMsg("Invalid width or height: %d x %d\n", w, h); |
| 0 | 65 return FALSE; |
| 66 } | |
| 67 optScrWidth = w; | |
| 68 optScrHeight = h; | |
| 69 } | |
| 2046 | 70 else |
| 0 | 71 { |
|
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72 dmErrorMsg("Invalid size argument '%s'.\n", optArg); |
| 0 | 73 return FALSE; |
| 74 } | |
| 75 } | |
| 76 break; | |
| 77 | |
| 78 case 7: | |
| 79 optBenchmark = TRUE; | |
| 80 break; | |
| 81 | |
| 82 default: | |
|
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changeset
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83 dmErrorMsg("Unknown option '%s'.\n", currArg); |
| 0 | 84 return FALSE; |
| 85 } | |
| 2046 | 86 |
| 0 | 87 return TRUE; |
| 88 } | |
| 89 | |
| 90 | |
| 91 void DM_MakePalette(SDL_Surface *scr) | |
| 92 { | |
| 93 SDL_Color pal[DM_COLORS]; | |
| 94 int n; | |
| 95 | |
| 96 for (n = 0; n < 256; n++) | |
| 97 { | |
| 98 pal[n].r = n; | |
| 99 pal[n].g = n; | |
| 100 pal[n].b = n; | |
| 101 } | |
| 102 | |
| 103 SDL_SetColors(scr, pal, 0, DM_COLORS); | |
| 104 } | |
| 105 | |
| 106 | |
| 107 void DM_PrintRect(FILE *f, SDL_Rect *r) | |
| 108 { | |
| 109 fprintf(f, "SDL_Rect <%d, %d : %d, %d>\n", | |
| 110 r->x, r->y, r->w, r->h); | |
| 111 } | |
| 112 | |
| 113 BOOL DM_InitializeVideo(SDL_Surface **screen) | |
| 114 { | |
| 115 *screen = SDL_SetVideoMode(optScrWidth, optScrHeight, optScrDepth, optVFlags | SDL_RESIZABLE); | |
| 116 if (*screen == NULL) | |
| 117 { | |
|
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Add error code parameter to dmError() and dmErrorVA().
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diff
changeset
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118 dmErrorMsg("Can't SDL_SetVideoMode(): %s\n", SDL_GetError()); |
| 0 | 119 return FALSE; |
| 120 } | |
| 121 | |
| 122 #if 0 | |
| 123 SDL_Rect r; | |
| 124 r.x = -50; | |
| 125 r.y = 50; | |
| 126 r.w = 700; | |
| 127 r.h = 300; | |
| 128 DM_PrintRect(stderr, &r); | |
| 129 SDL_SetClipRect(*screen, &r); | |
| 130 DM_PrintRect(stderr, &r); | |
| 131 DM_PrintRect(stderr, &((*screen)->clip_rect)); | |
| 132 #endif | |
| 133 | |
| 134 return TRUE; | |
| 135 } | |
| 136 | |
| 137 void DM_Random(SDL_Surface *screen, int q) | |
| 138 { | |
| 139 Uint8 *pix = screen->pixels; | |
| 140 int xc, yc; | |
| 2046 | 141 |
| 0 | 142 for (yc = 0; yc < screen->h; yc++) |
| 143 { | |
| 144 Uint8 *dp = pix; | |
| 145 | |
| 146 for (xc = 0; xc < screen->w; xc++) | |
| 147 *dp++ = yc + (xc ^ q) + (yc & q); | |
| 148 | |
| 149 pix += screen->pitch; | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 #define QWIDTH 256 | |
| 154 #define QHEIGHT 160 | |
| 155 | |
| 156 typedef Uint8 DMBlockMap[QHEIGHT][QWIDTH]; | |
| 157 | |
| 158 | |
| 159 static DMFloat dmClip(DMFloat a) | |
| 160 { | |
| 161 return (a < 0.0f ? 0.0f : (a > 1.0f ? 1.0f : a)); | |
| 162 } | |
| 163 | |
| 164 | |
| 165 void dmMakeBumpMap(DMBlockMap map, DMFloat q, DMFloat m) | |
| 166 { | |
| 167 int x, y; | |
| 168 for (y = 0; y < QHEIGHT; y++) | |
| 169 for (x = 0; x < QWIDTH; x++) | |
| 170 { | |
| 896 | 171 DMFloat f = 0.40f + dmPerlinNoise2D(&perlinCtx, x, y, 1.1f, q, 2); |
| 0 | 172 map[y][x] = (int) (dmClip(f) * m); |
| 173 } | |
| 174 } | |
| 175 | |
| 176 | |
| 177 void dmShadowTraceHeightMap(DMBlockMap lightMap, DMBlockMap pheightMap, DMVector *light) | |
| 178 { | |
| 179 int i, j; | |
| 180 | |
| 181 for (j = 0; j < QHEIGHT; j++) | |
| 182 for (i = 0; i < QWIDTH; i++) | |
| 183 { | |
| 184 DMVector vr, vl, va; | |
| 185 DMFloat vrayLen, vfactor; | |
| 186 int vlen; | |
| 187 BOOL wasHit; | |
| 188 | |
| 189 // Perform shadow occlusion via simplistic raytracing | |
| 190 vr.x = i; | |
| 191 vr.y = j; | |
| 192 vr.z = light->z; // - 10.0; | |
| 193 // vr.z = pheightMap[j][i]; | |
| 2046 | 194 |
| 0 | 195 // Calculate light vector vector |
| 196 dm_vector_sub_r(&vl, &vr, light); | |
| 197 vrayLen = dm_vector_length(&vl); | |
| 2046 | 198 |
| 0 | 199 #if 1 |
| 200 dm_vector_copy(&va, &vl); | |
| 201 dm_vector_normalize(&va); | |
| 202 dm_vector_scale(&va, 0.6f); | |
| 203 dm_vector_copy(&vr, light); | |
| 204 | |
| 205 vlen = 0; | |
| 206 wasHit = FALSE; | |
| 207 do | |
| 208 { | |
| 209 float h; | |
| 2046 | 210 |
| 0 | 211 // If ray is inside the heightmap, get value |
| 212 if (vr.x >= 0 && vr.y >= 0 && vr.x < QWIDTH && vr.y < QHEIGHT) | |
| 213 h = pheightMap[(int) vr.y][(int) vr.x]; | |
| 214 else | |
| 215 break; | |
| 2046 | 216 |
| 0 | 217 // Check for hits |
| 218 if (h > vr.z) | |
| 219 wasHit = TRUE; | |
| 220 else | |
| 221 { | |
| 222 // Move forwards | |
| 223 dm_vector_add(&vr, &va); | |
| 224 vlen++; | |
| 225 } | |
| 226 } | |
| 227 while (!wasHit && vlen <= vrayLen); | |
| 228 | |
| 229 // Check if the ray hit something, e.g. is this point occluded? | |
| 230 if (wasHit && vlen < vrayLen) | |
| 231 { | |
| 232 vfactor = vlen * 0.01; | |
| 233 } | |
| 234 else | |
| 235 vfactor = vlen * 0.02; | |
| 236 #endif | |
| 237 | |
| 238 #if 1 | |
| 239 { | |
| 240 /* Calculate light's intensity based on the angle it "hits" | |
| 241 * | |
| 242 * 1) Calculate the vectors that form the imaginary "plane" | |
| 243 * 2) Cross-product -> normal vector of the plane | |
| 244 * 2) Normalize the normal vector | |
| 245 * 3) Calculate light vector's hit angle by dot product | |
| 246 */ | |
| 247 DMVector v1, v2; | |
| 248 DMFloat c; | |
| 249 | |
| 250 v1.x = 2.0f; | |
| 251 v1.y = 0.0f; | |
| 252 v1.z = (DMFloat) (pheightMap[j][i] - pheightMap[j][i + 1]); | |
| 253 | |
| 254 v2.x = 0.0f; | |
| 255 v2.y = 2.0f; | |
| 256 v2.z = (DMFloat) (pheightMap[j][i] - pheightMap[j + 1][i]); | |
| 257 | |
| 258 dm_vector_cross(&vr, &v1, &v2); | |
| 259 dm_vector_normalize(&vr); | |
| 260 dm_vector_normalize(&vl); | |
| 261 c = dm_vector_dot(&vl, &vr); | |
| 262 | |
| 263 vrayLen = 255 - (vrayLen * 0.1) * vrayLen + (c * 128.0f) + (vfactor * vfactor * 1255); | |
| 264 } | |
| 265 #else | |
| 266 vrayLen = 255 - vrayLen * vrayLen * (vfactor * vfactor); | |
| 267 if (vrayLen < 0) vrayLen = 0; | |
| 268 vrayLen += pheightMap[j][i]; | |
| 269 #endif | |
| 270 | |
| 271 // Clip result | |
| 272 if (vrayLen < 0) | |
| 273 vrayLen = 0; | |
| 274 else if (vrayLen > 255.0f) | |
| 275 vrayLen = 255.0f; | |
| 276 | |
| 277 lightMap[j][i] = vrayLen; | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 | |
| 282 int main(int argc, char *argv[]) | |
| 283 { | |
|
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Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
284 SDL_Surface *screen = NULL, *bmap = NULL; |
| 0 | 285 TTF_Font *font = NULL; |
| 286 SDL_Color fontcol={255,155,155,0}; | |
| 287 SDL_Event event; | |
| 288 int mouseX, mouseY; | |
|
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parents:
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diff
changeset
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289 BOOL initSDL = FALSE, initTTF = FALSE, exitFlag, showMap = FALSE; |
| 0 | 290 |
| 291 dmInitProg("blittest", "dmlib blittest", "0.2", NULL, NULL); | |
| 292 if (!dmArgsProcess(argc, argv, optList, optListN, | |
|
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The argument handling API in dmargs* was synced with th-libs.
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parents:
651
diff
changeset
|
293 argHandleOpt, NULL, OPTH_BAILOUT)) |
| 0 | 294 exit(1); |
| 295 | |
| 296 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0) | |
| 297 { | |
|
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parents:
896
diff
changeset
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298 dmErrorMsg("Could not initialize SDL: %s\n", SDL_GetError()); |
| 0 | 299 goto error_exit; |
| 300 } | |
| 301 initSDL = TRUE; | |
| 302 | |
| 303 | |
| 304 if (TTF_Init() < 0) | |
| 305 { | |
|
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parents:
896
diff
changeset
|
306 dmErrorMsg("Could not initialize FreeType/TTF: %s\n", SDL_GetError()); |
| 0 | 307 goto error_exit; |
| 308 } | |
| 309 initTTF = TRUE; | |
| 310 | |
| 311 font = TTF_OpenFont(optFontFile, optFontSize); | |
| 312 if (font == NULL) | |
| 313 { | |
|
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parents:
896
diff
changeset
|
314 dmErrorMsg("Could not load TTF font '%s' (%d): %s\n", |
| 0 | 315 optFontFile, optFontSize, SDL_GetError()); |
| 316 goto error_exit; | |
| 317 } | |
| 318 TTF_SetFontStyle(font, TTF_STYLE_NORMAL); | |
| 319 | |
| 320 if (optBenchmark) | |
| 321 { | |
| 322 screen = SDL_CreateRGBSurface(SDL_SWSURFACE, optScrWidth, optScrHeight, optScrDepth, 0, 0, 0, 0); | |
| 323 if (screen == NULL) | |
| 324 { | |
|
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Add error code parameter to dmError() and dmErrorVA().
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parents:
896
diff
changeset
|
325 dmErrorMsg("Could not create screen surface.\n"); |
| 0 | 326 goto error_exit; |
| 327 } | |
| 2046 | 328 |
| 0 | 329 dmMsg(0, "Benchmark mode, not opening window.\n"); |
| 330 } | |
| 331 else | |
| 332 { | |
| 333 if (!DM_InitializeVideo(&screen)) | |
| 334 goto error_exit; | |
| 335 | |
| 336 SDL_WM_SetCaption("Halleluja", "DMT"); | |
| 337 } | |
| 338 | |
| 896 | 339 dmPerlinInit(&perlinCtx, 1234); |
| 0 | 340 |
| 341 bmap = SDL_CreateRGBSurface(SDL_SWSURFACE, QWIDTH, QHEIGHT, 8, 0, 0, 0, 0); | |
| 342 DM_MakePalette(bmap); | |
| 343 DM_Random(bmap, 15); | |
| 2046 | 344 |
| 0 | 345 DMVector light; |
| 346 DMBlockMap heightMap; | |
| 347 light.x = light.y = 128; | |
| 348 light.z = 128; | |
| 349 dmMakeBumpMap(heightMap, 0.06, 254); | |
| 350 | |
| 351 | |
| 352 | |
| 353 int numFrames = 0, startTime = SDL_GetTicks(), endTime = 0; | |
| 354 exitFlag = FALSE; | |
| 355 | |
| 356 if (optBenchmark) | |
| 357 dmMsg(0, "Starting benchmark, running for %d seconds.\n", optBenchmarkLen); | |
| 358 | |
| 359 while (!exitFlag) | |
| 360 { | |
| 361 dmMakeBumpMap(heightMap, 0.05 + sin(SDL_GetTicks() * 0.001) * 0.002 , 254); | |
| 362 if (!optBenchmark) | |
| 363 { | |
| 364 while (SDL_PollEvent(&event)) | |
| 365 switch (event.type) | |
| 366 { | |
| 367 case SDL_KEYDOWN: | |
| 368 switch (event.key.keysym.sym) | |
| 369 { | |
| 370 case SDLK_ESCAPE: exitFlag = TRUE; break; | |
| 2046 | 371 |
| 0 | 372 case SDLK_F5: |
| 373 showMap = !showMap; | |
| 374 break; | |
| 2046 | 375 |
| 0 | 376 default: |
| 377 break; | |
| 378 } | |
| 379 | |
| 380 break; | |
| 2046 | 381 |
| 0 | 382 case SDL_VIDEORESIZE: |
| 383 optScrWidth = event.resize.w; | |
| 384 optScrHeight = event.resize.h; | |
| 385 | |
| 386 if (!DM_InitializeVideo(&screen)) | |
| 387 goto error_exit; | |
| 388 | |
| 389 break; | |
| 2046 | 390 |
| 0 | 391 case SDL_VIDEOEXPOSE: |
| 392 break; | |
| 393 | |
| 394 case SDL_QUIT: | |
| 395 exit(0); | |
| 396 } | |
| 397 | |
| 398 SDL_GetMouseState(&mouseX, &mouseY); | |
| 399 light.x = ((DMFloat) mouseX * QWIDTH) / (DMFloat) optScrWidth; | |
| 400 light.y = ((DMFloat) mouseY * QHEIGHT) / (DMFloat) optScrHeight; | |
| 401 } | |
| 402 | |
| 403 if (!optBenchmark && SDL_MUSTLOCK(screen) != 0 && SDL_LockSurface(screen) != 0) | |
| 404 { | |
|
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Matti Hamalainen <ccr@tnsp.org>
parents:
896
diff
changeset
|
405 dmErrorMsg("Can't lock surface.\n"); |
| 0 | 406 goto error_exit; |
| 407 } | |
| 408 | |
| 409 | |
| 410 if (showMap) | |
| 411 memcpy(bmap->pixels, heightMap, QWIDTH * QHEIGHT); | |
| 412 else | |
| 413 dmShadowTraceHeightMap(bmap->pixels, heightMap, &light); | |
| 2046 | 414 |
| 0 | 415 dmScaledBlitSurfaceAny(bmap, 0, 0, screen->w, screen->h, screen, DMD_NONE); |
| 416 | |
| 417 if (!optBenchmark) | |
| 418 { | |
| 2046 | 419 dmDrawTTFText(screen, font, fontcol, 0, 0, "%3.1f FPS", |
| 0 | 420 (float) (numFrames * 1000.0f) / (float) (endTime - startTime)); |
| 421 | |
| 422 if (SDL_MUSTLOCK(screen) != 0) | |
| 423 SDL_UnlockSurface(screen); | |
| 424 | |
| 425 SDL_Flip(screen); | |
| 426 SDL_Delay(10); | |
| 427 } | |
| 428 | |
| 429 endTime = SDL_GetTicks(); | |
| 430 numFrames++; | |
| 431 | |
| 432 if (optBenchmark) | |
| 433 { | |
| 434 if (endTime - startTime > optBenchmarkLen * 1000) | |
| 435 exitFlag = TRUE; | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 // Print benchmark results | |
| 440 dmMsg(0, "%d frames in %d ms, fps = %1.3f\n", | |
| 441 numFrames, endTime - startTime, | |
| 442 (float) (numFrames * 1000.0f) / (float) (endTime - startTime)); | |
| 443 | |
| 444 | |
| 445 error_exit: | |
| 446 dmMsg(0, "Shutting down dmlib.\n"); | |
| 447 if (screen) | |
| 448 SDL_FreeSurface(screen); | |
| 449 | |
| 450 if (font) | |
| 451 TTF_CloseFont(font); | |
| 452 | |
| 453 if (initSDL) | |
| 454 SDL_Quit(); | |
| 455 | |
| 456 if (initTTF) | |
| 457 TTF_Quit(); | |
| 458 | |
| 459 return 0; | |
| 460 } |