Open Source Tomb Raider Engine
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GLString.cpp 6.0KB

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  1. /*!
  2. * \file test/GLString.cpp
  3. * \brief Open GL rendering font/string Unit Test
  4. *
  5. * \author Mongoose
  6. */
  7. #include <math.h>
  8. #ifdef __APPLE__
  9. #include <OpenGL/glu.h>
  10. #else
  11. #include <GL/glu.h>
  12. #endif
  13. #ifdef HAVE_SDL_TTF
  14. #include <Texture.h>
  15. Texture gTexture;
  16. #else
  17. #error "Requires SDL_TTF"
  18. #endif
  19. #include <GLString.h>
  20. GLString *TEXT;
  21. void swap_buffers();
  22. void event_resize(int width, int height)
  23. {
  24. GLfloat aspect;
  25. glMatrixMode(GL_PROJECTION);
  26. aspect = (GLfloat)width/(GLfloat)height;
  27. // Mongoose 2002.01.01, Setup view volume, with a nice FOV
  28. // gluPerspective is deprecated!
  29. // gluPerspective(40.0, aspect, 1, 2000);
  30. // fix: http://stackoverflow.com/a/2417756
  31. GLfloat fH = tan(float(40.0 / 360.0f * 3.14159f));
  32. GLfloat fW = fH * aspect;
  33. glFrustum(-fW, fW, -fH, fH, 1, 2000);
  34. glMatrixMode(GL_MODELVIEW);
  35. }
  36. void event_display(int width, int height)
  37. {
  38. static float x = 0.0, y = 0.0, z = -150.0, r = 0.0;
  39. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  40. glLoadIdentity();
  41. glTranslatef(0.0, 0.0, -20.0);
  42. glRotatef((float)cos(r)*180.0, 0.0, 0.0, 1.0);
  43. r += 0.01;
  44. // Mongoose 2002.01.01, Render color quad
  45. glDisable(GL_TEXTURE_2D);
  46. glBegin(GL_TRIANGLE_STRIP);
  47. glColor3f(1.0, 0.0, 0.0);
  48. glVertex3f(x + 50, y + 50, z);
  49. glColor3f(0.0, 1.0, 0.0);
  50. glVertex3f(x - 50, y + 50, z);
  51. glColor3f(0.0, 0.0, 1.0);
  52. glVertex3f(x + 50, y - 50, z);
  53. glColor3f(0.5, 0.5, 0.5);
  54. glVertex3f(x - 50, y - 50, z);
  55. glEnd();
  56. // Mongoose 2002.01.01, Render text
  57. glDisable(GL_CULL_FACE);
  58. glEnable(GL_BLEND);
  59. glEnable(GL_TEXTURE_2D);
  60. glColor3f(0.75, 0.5, 1.0);
  61. glEnterMode2d(width, height);
  62. TEXT->Render(width, height);
  63. glExitMode2d();
  64. glFlush();
  65. swap_buffers();
  66. }
  67. #ifdef HAVE_SDL
  68. #include <SDL/SDL.h>
  69. SDL_Surface *SDL_WINDOW = NULL;
  70. void swap_buffers()
  71. {
  72. SDL_GL_SwapBuffers();
  73. }
  74. void shutdown_gl()
  75. {
  76. SDL_Quit();
  77. }
  78. void init_gl(unsigned int width, unsigned int height)
  79. {
  80. int i;
  81. int id;
  82. const char *errorText = "TEXT->glPrintf> ERROR code %i\n";
  83. // Setup GL
  84. glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
  85. glShadeModel(GL_SMOOTH);
  86. glEnable(GL_DEPTH_TEST);
  87. glDepthFunc(GL_LESS);
  88. glEnable(GL_BLEND);
  89. glBlendFunc(GL_SRC_ALPHA, GL_ONE);
  90. event_resize(width, height);
  91. // Mongoose 2002.01.01, Texture setup
  92. gTexture.reset();
  93. gTexture.setFlag(Texture::fUseMipmaps);
  94. gTexture.setMaxTextureCount(32);
  95. id = gTexture.loadFontTTF("data/test.ttf", 32, 126 - 32); // ASCII
  96. TEXT->Init(4, 1, &id);
  97. i = TEXT->glPrintf((width/2)-50, height/2-32, 0, "OpenRaider");
  98. if (i) {
  99. printf(errorText, i);
  100. }
  101. i = TEXT->glPrintf((width/2)-50, height/2, 0, "GLString");
  102. if (i) {
  103. printf(errorText, i);
  104. }
  105. TEXT->Scale(1.2);
  106. i = TEXT->glPrintf((width/2)-100, height/2+32, 0, "Unit Test by Mongoose");
  107. if (i) {
  108. printf(errorText, i);
  109. }
  110. i = TEXT->glPrintf((width/2)-100, height/2+64, 0, "ported to TTF by xythobuz");
  111. if (i) {
  112. printf(errorText, i);
  113. }
  114. TEXT->setActive(0, true);
  115. TEXT->setActive(1, true);
  116. TEXT->setActive(2, true);
  117. TEXT->setActive(3, true);
  118. }
  119. int main_gl(int argc, char *argv[])
  120. {
  121. SDL_Event event;
  122. unsigned int mkeys, mod, key;
  123. int flags;
  124. unsigned int width = 640;
  125. unsigned int height = 480;
  126. bool fullscreen = false;
  127. #ifndef __APPLE__
  128. char *driver = NULL;
  129. #endif
  130. // Setup clean up on exit
  131. atexit(shutdown_gl);
  132. // Get user settings
  133. //event_init(&width, &height, &fullscreen, &driver, argc, argv);
  134. // Create GL context
  135. SDL_Init(SDL_INIT_VIDEO);
  136. #ifndef __APPLE__
  137. if (!driver || !driver[0] || SDL_GL_LoadLibrary(driver) < 0)
  138. {
  139. SDL_ClearError();
  140. // Fallback 1
  141. if (SDL_GL_LoadLibrary("libGL.so") < 0)
  142. {
  143. SDL_ClearError();
  144. // Fallback 2
  145. if (SDL_GL_LoadLibrary("libGL.so.1") < 0)
  146. {
  147. fprintf(stderr, "main_gl> SDL_GL_LoadLibrary failed!\n");
  148. fprintf(stderr, "main_gl> Error is [%s].\n", SDL_GetError());
  149. exit(1);
  150. }
  151. }
  152. }
  153. #endif
  154. flags = SDL_OPENGL | SDL_GL_DOUBLEBUFFER;
  155. if (fullscreen)
  156. {
  157. flags |= SDL_FULLSCREEN;
  158. SDL_ShowCursor(SDL_DISABLE);
  159. }
  160. SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
  161. SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
  162. SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
  163. SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
  164. SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
  165. SDL_WINDOW = SDL_SetVideoMode(width, height, 16, flags);
  166. SDL_WM_SetCaption("GLString Test", "GLString Test");
  167. SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
  168. // Init rendering
  169. init_gl(width, height);
  170. for (;;)
  171. {
  172. // Pause for 10-20 ms
  173. SDL_Delay(10);
  174. event_display(width, height);
  175. while (SDL_PollEvent(&event))
  176. {
  177. switch (event.type)
  178. {
  179. case SDL_QUIT:
  180. exit(0);
  181. break;
  182. case SDL_MOUSEMOTION:
  183. break;
  184. case SDL_MOUSEBUTTONDOWN:
  185. case SDL_MOUSEBUTTONUP:
  186. break;
  187. case SDL_KEYDOWN:
  188. mkeys = (unsigned int)SDL_GetModState();
  189. mod = 0;
  190. if (mkeys & KMOD_LSHIFT)
  191. mod |= KMOD_LSHIFT;
  192. if (mkeys & KMOD_RSHIFT)
  193. mod |= KMOD_RSHIFT;
  194. if (mkeys & KMOD_LCTRL)
  195. mod |= KMOD_LCTRL;
  196. if (mkeys & KMOD_RCTRL)
  197. mod |= KMOD_RCTRL;
  198. if (mkeys & KMOD_LALT)
  199. mod |= KMOD_LALT;
  200. if (mkeys & KMOD_RALT)
  201. mod |= KMOD_RALT;
  202. if (mkeys & KMOD_LMETA)
  203. mod |= KMOD_LMETA;
  204. if (mkeys & KMOD_RMETA)
  205. mod |= KMOD_RMETA;
  206. key = event.key.keysym.sym;
  207. switch (key)
  208. {
  209. case 0x1B: // 27d, ESC
  210. exit(0);
  211. break;
  212. #ifdef __APPLE__
  213. case 113: // q
  214. if ((mod & KMOD_RMETA) || (mod & KMOD_LMETA))
  215. exit(0);
  216. break;
  217. #endif
  218. case 114: // r
  219. break;
  220. }
  221. break;
  222. case SDL_KEYUP:
  223. break;
  224. case SDL_VIDEORESIZE:
  225. width = event.resize.w;
  226. height = event.resize.h;
  227. event_resize(width, height);
  228. event_display(width, height);
  229. break;
  230. }
  231. }
  232. }
  233. return 0;
  234. }
  235. #else
  236. #error "Requires SDL to create GL Context"
  237. #endif
  238. int main(int argc, char *argv[])
  239. {
  240. printf("[GLString class test]\n");
  241. TEXT = new GLString();
  242. main_gl(argc, argv);
  243. return 0;
  244. }