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comparison glxdragon.cpp @ 11:89dc8caeff41

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Improve option handling a bit.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 28 Oct 2019 13:08:26 +0200
parents c6c419861101
children 52a586c344f4
comparison
equal deleted inserted replaced
10:c6c419861101 11:89dc8caeff41
37 #include <fstream> 37 #include <fstream>
38 #include <string> 38 #include <string>
39 #include <vector> 39 #include <vector>
40 #include <cstdio> 40 #include <cstdio>
41 41
42 42 /* Default settings etc. constants
43 #define SET_FRAMES (180 * 2) 43 */
44 44 #define SET_DEF_WIDTH 1280
45 45 #define SET_DEF_HEIGHT 960
46 bool optUseShaders = false; 46 #define SET_FRAMES (180 * 2)
47 SDL_Window *dmWindow = NULL; 47
48 SDL_GLContext dmGLContext = NULL; 48
49 49 /* Structures
50 50 */
51 struct Mesh 51 struct Mesh
52 { 52 {
53 int nvertices, nfaces; 53 int nvertices, nfaces;
54 std::vector<float> vertices; 54 std::vector<float> vertices;
55 std::vector<unsigned> faces; 55 std::vector<unsigned> faces;
56 56
57 GLuint id_prog, id_ps, id_vs; 57 GLuint id_prog, id_ps, id_vs;
58 }; 58 };
59 59
60
61
62 /* Options
63 */
64 bool optUseShaders = false;
65 int optWidth = SET_DEF_WIDTH,
66 optHeight = SET_DEF_HEIGHT;
67
68
69 /* Globals
70 */
71 SDL_Window *dmWindow = NULL;
72 SDL_GLContext dmGLContext = NULL;
60 73
61 74
62 bool dmInitSDLGL(const int width, const int height, const char *title) 75 bool dmInitSDLGL(const int width, const int height, const char *title)
63 { 76 {
64 // Set GL attributes 77 // Set GL attributes
294 std::string dragonVS, dragonFS; 307 std::string dragonVS, dragonFS;
295 bool exitFlag = false, optShowHelp = false; 308 bool exitFlag = false, optShowHelp = false;
296 int startTime, nframes = 0; 309 int startTime, nframes = 0;
297 310
298 // Check commandline argument for enabling shaders 311 // Check commandline argument for enabling shaders
299
300 for (int narg = 1; narg < argc; narg++) 312 for (int narg = 1; narg < argc; narg++)
301 { 313 {
302 char *arg = argv[narg]; 314 char *arg = argv[narg];
303 if (strstr(arg, "help") != NULL || 315 if (arg[0] == '-')
304 strstr(arg, "?") != NULL) 316 {
305 optShowHelp = true; 317 char *opt = arg + 1;
306 else 318
307 if (strstr(arg, "glsl") != NULL || 319 if ((opt[0] == '-' && opt[1] == 'h' && opt[2] == 'e') ||
308 strstr(arg, "sha") != NULL) 320 opt[0] == '?')
309 optUseShaders = true; 321 {
322 optShowHelp = true;
323 break;
324 }
325 else
326 if (opt[0] == '-')
327 opt++;
328
329 if (opt[0] == 'g')
330 optUseShaders = true;
331 else
332 if (opt[0] == 'w')
333 optWidth = atoi(opt + 1);
334 else
335 if (opt[0] == 'h')
336 optHeight = atoi(opt + 1);
337 }
310 } 338 }
311 339
312 if (optShowHelp) 340 if (optShowHelp)
313 { 341 {
314 printf( 342 printf(
315 "Usage: %s [glsl]\n" 343 "Usage: %s [options]\n"
316 "glsl argument will turn on GLSL shader mode instead of basic OpenGL lighting.\n" 344 "-? Show this help\n"
317 , argv[0]); 345 "-g Use GLSL shader instead of basic OpenGL lighting\n"
346 "-w<width> Window width (default %d)\n"
347 "-h<height> Window height (default %d)\n"
348 "\n",
349 argv[0],
350 SET_DEF_WIDTH, SET_DEF_HEIGHT
351 );
352
318 goto exit; 353 goto exit;
319 } 354 }
320 355
321 if (!dmLoadMesh("dragon.mesh", dragonMesh, 100139, 200198)) 356 if (!dmLoadMesh("dragon.mesh", dragonMesh, 100139, 200198))
322 goto exit; 357 goto exit;
328 !dmReadText("dragon.vert", dragonVS)) 363 !dmReadText("dragon.vert", dragonVS))
329 goto exit; 364 goto exit;
330 } 365 }
331 366
332 // Initialize SDL + OpenGL 367 // Initialize SDL + OpenGL
333 if (!dmInitSDLGL(1280, 960, "GLXDragon2")) 368 if (!dmInitSDLGL(optWidth, optHeight, "GLXDragon2"))
334 goto exit; 369 goto exit;
335 370
336 // According to our mode .. 371 // According to our mode ..
337 if (optUseShaders) 372 if (optUseShaders)
338 { 373 {