Open Source Tomb Raider Engine
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  1. /* -*- Mode: C++; tab-width: 3; indent-tabs-mode: t; c-basic-offset: 3 -*- */
  2. /*==========================================================================
  3. *
  4. * Project : MTK, Freyja, OpenRaider
  5. * Author : Terry 'Mongoose' Hendrix II
  6. * Website : http://www.westga.edu/~stu7440
  7. * Email : stu7440@westga.edu
  8. * Object : MtkTexture
  9. * Comments: This is the Texture registery
  10. *
  11. * See file COPYING for license details.
  12. *
  13. *
  14. *-- History ----------------------------------------------------------
  15. *
  16. * 2003.06.30,
  17. * Mongoose - API update, SDL_TTF support moved here, misc features
  18. * SDL_TTF support based on Sam Lantinga's public domain
  19. * SDL_TTF demo functions and algorithms
  20. *
  21. * 2001.05.29:
  22. * Mongoose - Removed legacy code and done clean up
  23. *
  24. * 2001.02.19:
  25. * Mongoose - Moved from GooseEgg to mtk
  26. *
  27. * 2000.04.29:
  28. * Mongoose - Created from old PPM/PCX codebases I have done before
  29. ==========================================================================*/
  30. #ifndef _TEXTURE_H
  31. #define _TEXTURE_H
  32. #include <stdio.h>
  33. typedef struct
  34. {
  35. int x, y, w, h;
  36. int minx; int maxx; int miny; int maxy; int advance;
  37. } ttf_glyph_t;
  38. typedef struct
  39. {
  40. unsigned int utf8Offset;
  41. unsigned int count;
  42. /* [utf8Offset -> utf8Offset+count],
  43. matches indexing into glyphs[0 -> count] for texcoords, etc
  44. ----------------------------------------
  45. 41 -> 126 ASCII English w/ special chars,
  46. 0x303f -> 0x3093 Japanese hiragana kana,
  47. 0x301a -> 0x30f6 Japanese katakana kana */
  48. unsigned int width; /* Width and height of RGBA texture */
  49. unsigned char *texture; /* RGBA texture data */
  50. ttf_glyph_t *glyphs; /* For typesetting and rendering use */
  51. int fontHeight;
  52. int fontAscent;
  53. int fontDescent;
  54. int fontSpacing;
  55. } ttf_texture_t;
  56. typedef struct
  57. {
  58. unsigned int utf8Offset;
  59. unsigned int count;
  60. int textureId;
  61. int drawListBase;
  62. } gl_font_t;
  63. class Texture
  64. {
  65. public:
  66. enum ColorMode
  67. {
  68. GREYSCALE = 1,
  69. RGB,
  70. RGBA,
  71. ARGB
  72. };
  73. enum TextureFlag
  74. {
  75. fUseMipmaps = 1,
  76. fUseMultiTexture = 2,
  77. fUseSDL_TTF = 4
  78. };
  79. ////////////////////////////////////////////////////////////
  80. // Constructors
  81. ////////////////////////////////////////////////////////////
  82. Texture();
  83. /*------------------------------------------------------
  84. * Pre :
  85. * Post : Constructs an object of Texture
  86. *
  87. *-- History ------------------------------------------
  88. *
  89. * 2001.05.29:
  90. * Mongoose - Big code clean up, documentation
  91. *
  92. * 2000.10.05:
  93. * Mongoose - Created
  94. ------------------------------------------------------*/
  95. ~Texture();
  96. /*------------------------------------------------------
  97. * Pre : This object exists
  98. * Post : Deconstructs an object of Texture
  99. *
  100. *-- History ------------------------------------------
  101. *
  102. * 2001.05.29:
  103. * Mongoose - Big code clean up, documentation
  104. *
  105. * 2000.10.05:
  106. * Mongoose - Created
  107. ------------------------------------------------------*/
  108. ////////////////////////////////////////////////////////////
  109. // Public Accessors
  110. ////////////////////////////////////////////////////////////
  111. static unsigned char *generateColorTexture(unsigned char rgba[4],
  112. unsigned int width,
  113. unsigned int height);
  114. /*------------------------------------------------------
  115. * Pre : <Rgba> is 32bpp RGBA color
  116. * <Width> and <Height> are powers of two, pref
  117. * the same number
  118. * Post :
  119. *
  120. *-- History ------------------------------------------
  121. *
  122. * 2003.06.30:
  123. * Mongoose - Created
  124. ------------------------------------------------------*/
  125. gl_font_t *generateFont(ttf_texture_t *texture);
  126. /*------------------------------------------------------
  127. * Pre :
  128. * Post :
  129. *
  130. *-- History ------------------------------------------
  131. *
  132. * 2003.06.30:
  133. * Mongoose - Created
  134. ------------------------------------------------------*/
  135. ttf_texture_t *generateFontTexture(const char *filename, int pointSize,
  136. unsigned int textureWidth,
  137. unsigned char color[3],
  138. unsigned int utf8Offset,
  139. unsigned int count,
  140. char verbose);
  141. /*------------------------------------------------------
  142. * Pre : <Filename> of TTF font
  143. * <PointSize> to generate
  144. * <TextureWidth> is width of texture, height will match it
  145. * <Color> is RGB 24bit color
  146. * <Utf8Offset> is offset into font's encoding chart
  147. * <Count> is number of glyphs to read from offset start
  148. * <Verbose> dumps debug info to stdout
  149. *
  150. * Post : Generates a font texture with typeset info from TTF
  151. *
  152. * DOES NOT load the texture itself, call loadFont()
  153. * on returned ttf_texture_t
  154. *
  155. *
  156. *-- History ------------------------------------------
  157. *
  158. * 2003.06.03:
  159. * Mongoose - Created
  160. ------------------------------------------------------*/
  161. int getTextureCount();
  162. /*------------------------------------------------------
  163. * Pre :
  164. * Post : Returns number of textures in use, or -1 for
  165. * error ( Not initalized )
  166. *
  167. *-- History ------------------------------------------
  168. *
  169. * 2001.05.29:
  170. * Mongoose - Big code clean up, documentation
  171. *
  172. * 2000.10.05:
  173. * Mongoose - Created
  174. ------------------------------------------------------*/
  175. void glScreenShot(char *base, unsigned int width, unsigned int height);
  176. /*------------------------------------------------------
  177. * Pre : <Base> is base filename,
  178. * <Width> and <Height> are viewport dim
  179. *
  180. * Post : Dumps a screenshot to disk,
  181. * avoids overwriting files with same base name
  182. *
  183. *-- History ------------------------------------------
  184. *
  185. * 2002.06.16:
  186. * Mongoose - Created
  187. ------------------------------------------------------*/
  188. ////////////////////////////////////////////////////////////
  189. // Public Mutators
  190. ////////////////////////////////////////////////////////////
  191. void bindMultiTexture(int texture0, int texture1);
  192. /*------------------------------------------------------
  193. * Pre :
  194. * Post : Sets up multitexture rendering with passed texture ids
  195. *
  196. *-- History ------------------------------------------
  197. *
  198. * 2002.12.24:
  199. * Mongoose - Created
  200. ------------------------------------------------------*/
  201. void bindTextureId(unsigned int n);
  202. /*------------------------------------------------------
  203. * Pre : n is valid texture index
  204. * Post : Binds the texture for use in GL
  205. *
  206. *-- History ------------------------------------------
  207. *
  208. * 2001.05.29:
  209. * Mongoose - Big code clean up, documentation
  210. *
  211. * 2000.10.05:
  212. * Mongoose - Created
  213. ------------------------------------------------------*/
  214. void clearFlag(TextureFlag flag);
  215. /*------------------------------------------------------
  216. * Pre :
  217. * Post : CLears a option flag
  218. *
  219. *-- History ------------------------------------------
  220. *
  221. * 2003.01.05:
  222. * Mongoose - Created
  223. ------------------------------------------------------*/
  224. void disableMultiTexture();
  225. /*------------------------------------------------------
  226. * Pre :
  227. * Post :
  228. *
  229. *-- History ------------------------------------------
  230. *
  231. * 2002.12.24:
  232. * Mongoose - Created
  233. ------------------------------------------------------*/
  234. void initSDL_TTF();
  235. /*------------------------------------------------------
  236. * Pre :
  237. * Post : Loads SDL_TTF if avalible
  238. *
  239. *-- History ------------------------------------------
  240. *
  241. * 2003.06.03:
  242. * Mongoose - Created
  243. ------------------------------------------------------*/
  244. int loadBuffer(unsigned char *image,
  245. unsigned int width, unsigned int height,
  246. ColorMode mode, unsigned int bpp);
  247. /*------------------------------------------------------
  248. * Pre : image must be a valid pixmap that agrees
  249. * with mode, width, and height
  250. *
  251. * Post : Returns texture id or < 0 error flag
  252. *
  253. *-- History ------------------------------------------
  254. *
  255. * 2001.05.29:
  256. * Mongoose - Big code clean up, documentation
  257. *
  258. * 2000.10.05:
  259. * Mongoose - Created
  260. ------------------------------------------------------*/
  261. int loadBufferSlot(unsigned char *image,
  262. unsigned int width, unsigned int height,
  263. ColorMode mode, unsigned int bpp,
  264. unsigned int slot);
  265. /*------------------------------------------------------
  266. * Pre : image must be a valid pixmap that agrees
  267. * with mode, width, and height, slot ( ID )
  268. *
  269. * Post : Returns texture id or < 0 error flag
  270. *
  271. *-- History ------------------------------------------
  272. *
  273. * 2002.09.05:
  274. * Mongoose - Created
  275. ------------------------------------------------------*/
  276. int loadColorTexture(unsigned char rgba[4],
  277. unsigned int width, unsigned int height);
  278. /*------------------------------------------------------
  279. * Pre :
  280. * Post : Generates and loads a solid color texture,
  281. * returns texture Id or -1 if failed
  282. *
  283. *-- History ------------------------------------------
  284. *
  285. * 2003.06.30:
  286. * Mongoose - Created
  287. ------------------------------------------------------*/
  288. int loadFontTTF(const char *filename,
  289. unsigned int utf8Offset, unsigned int count);
  290. /*------------------------------------------------------
  291. * Pre : <Filename> of TTF font
  292. * <Utf8Offset> is offset into UNICODE table
  293. * <Count> is number of glyphs to load
  294. *
  295. * Post : Loads a TTF,
  296. * Generates: texture image, glyph list, and drawlist
  297. *
  298. * Returns font id if sucessful, or < 0 if error
  299. *
  300. *-- History ------------------------------------------
  301. *
  302. * 2003.07.05:
  303. * Mongoose - Created
  304. ------------------------------------------------------*/
  305. int loadPNG(const char *filename);
  306. /*------------------------------------------------------
  307. * Pre : Texture is init and filename/file is valid
  308. * Post : Loads PNG as texture and returns ID or -1 error
  309. *
  310. *-- History ------------------------------------------
  311. *
  312. * 2002.06.16:
  313. * Mongoose - Created, from Freyja
  314. ------------------------------------------------------*/
  315. int loadTGA(const char *filename);
  316. /*------------------------------------------------------
  317. * Pre : Texture is init and filename/file is valid
  318. * Post : Loads TGA as texture and returns ID or -1 error
  319. *
  320. *-- History ------------------------------------------
  321. *
  322. * 2002.06.16:
  323. * Mongoose - Created
  324. ------------------------------------------------------*/
  325. void reset();
  326. /*------------------------------------------------------
  327. * Pre :
  328. * Post : Resets all texture data
  329. *
  330. *-- History ------------------------------------------
  331. *
  332. * 2001.05.29:
  333. * Mongoose - Big code clean up, documentation
  334. *
  335. * 2000.10.05:
  336. * Mongoose - Created
  337. ------------------------------------------------------*/
  338. void setFlag(TextureFlag flag);
  339. /*------------------------------------------------------
  340. * Pre :
  341. * Post : Sets a option flag
  342. *
  343. *-- History ------------------------------------------
  344. *
  345. * 2003.01.05:
  346. * Mongoose - Created
  347. ------------------------------------------------------*/
  348. void setMaxTextureCount(unsigned int n);
  349. /*------------------------------------------------------
  350. * Pre : n is max number of textures you wish to allow
  351. * Post : Sets up GL texturing, and must be called
  352. * as the first setup step
  353. *
  354. *-- History ------------------------------------------
  355. *
  356. * 2001.05.29:
  357. * Mongoose - Big code clean up, documentation
  358. *
  359. * 2000.10.05:
  360. * Mongoose - Created
  361. ------------------------------------------------------*/
  362. void useMultiTexture(float u, float v);
  363. /*------------------------------------------------------
  364. * Pre :
  365. * Post :
  366. *
  367. *-- History ------------------------------------------
  368. *
  369. * 2002.12.24:
  370. * Mongoose - Created
  371. ------------------------------------------------------*/
  372. void useMultiTexture(float aU, float aV, float bU, float bV);
  373. /*------------------------------------------------------
  374. * Pre :
  375. * Post :
  376. *
  377. *-- History ------------------------------------------
  378. *
  379. * 2002.12.24:
  380. * Mongoose - Created
  381. ------------------------------------------------------*/
  382. private:
  383. ////////////////////////////////////////////////////////////
  384. // Private Accessors
  385. ////////////////////////////////////////////////////////////
  386. int nextPower(int seed);
  387. /*------------------------------------------------------
  388. * Pre :
  389. * Post :
  390. *
  391. *-- History ------------------------------------------
  392. *
  393. * 2002.06.16:
  394. * Mongoose - Created
  395. ------------------------------------------------------*/
  396. unsigned char *scaleBuffer(unsigned char *image, int width, int height,
  397. int components);
  398. /*------------------------------------------------------
  399. * Pre :
  400. * Post :
  401. *
  402. *-- History ------------------------------------------
  403. *
  404. * 2002.06.16:
  405. * Mongoose - Created
  406. ------------------------------------------------------*/
  407. ////////////////////////////////////////////////////////////
  408. // Private Mutators
  409. ////////////////////////////////////////////////////////////
  410. unsigned int *mTextureIds; /* GL texture list */
  411. unsigned int mTextureCount; /* Texture counter */
  412. unsigned int mTextureLimit; /* The texture limit */
  413. unsigned int mFlags; /* Class options */
  414. int mTextureId; /* Currently bound texture id */
  415. int mTextureId2; /* Multitexture Texture Id */
  416. };
  417. /* Experimental testing */
  418. void bufferedPrintf(char *string, unsigned int len, char *s, ...);
  419. void glPrint3d(float x, float y, float z,
  420. float pitch, float yaw, float roll,
  421. float scale,
  422. char *string);
  423. void glPrint2d(float x, float y, float scale, char *string);
  424. void glEnterMode2d(unsigned int width, unsigned int height);
  425. /*------------------------------------------------------
  426. * Pre :
  427. * Post : OpenGL ortho projection
  428. *
  429. *-- History ------------------------------------------
  430. *
  431. * 2003.06.03:
  432. * Mongoose - Created
  433. ------------------------------------------------------*/
  434. void glExitMode2d();
  435. /*------------------------------------------------------
  436. * Pre :
  437. * Post : OpenGL model matrix projection
  438. *
  439. *-- History ------------------------------------------
  440. *
  441. * 2003.06.03:
  442. * Mongoose - Created
  443. ------------------------------------------------------*/
  444. #endif