arch/ogl/vid.c

   1 /*
   2  *
   3  * OGL video functions. - Added 9/15/99 Matthew Mueller
   4  *
   5  *
   6  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <conf.h>
  10 #endif
  11
  12 #define DECLARE_VARS
  13
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16 #include <string.h>
  17 #ifdef _MSC_VER
  18 #include <windows.h>
  19 #endif
  20
  21 #if !defined(_MSC_VER) && !defined(macintosh)
  22 #include <unistd.h>
  23 #endif
  24 #if !defined(macintosh)
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <fcntl.h>
  28 #endif
  29
  30 #include <errno.h>
  31
  32 #include "inferno.h"
  33 #include "gr.h"
  34 #include "vid.h"
  35 #include "u_mem.h"
  36 #include "dxxerror.h"
  37 #include "timer.h"
  38 #include "strutil.h"
  39 #include "mono.h"
  40 #include "args.h"
  41 #include "key.h"
  42 #include "physfsx.h"
  43
  44 #include "internal.h"
  45 #if defined(__APPLE__) && defined(__MACH__)
  46 #include <OpenGL/glu.h>
  47 #undef GL_ARB_multitexture // hack!
  48 #else
  49 #include <GL/glu.h>
  50 #endif
  51
  52
  53 int ogl_voodoohack=0;
  54
  55 int vid_installed = 0;
  56
  57
  58 void gr_palette_clear(void); // Function prototype for gr_init;
  59 int gl_initialized=0;
  60 int gl_reticle = 0;
  61
  62 int ogl_fullscreen=0;
  63
  64
  65 int vid_check_fullscreen(void)
  66 {
  67         return ogl_fullscreen;
  68 }
  69
  70
  71 static void do_fullscreen(int f)
  72 {
  73         if (ogl_voodoohack)
  74                 ogl_fullscreen=1;//force fullscreen mode on voodoos.
  75         else
  76                 ogl_fullscreen=f;
  77         if (gl_initialized){
  78                 ogl_do_fullscreen_internal();
  79         }
  80 }
  81
  82
  83 int vid_toggle_fullscreen(void)
  84 {
  85         do_fullscreen(!ogl_fullscreen);
  86         //      grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
  87         return ogl_fullscreen;
  88 }
  89
  90
  91 int vid_toggle_fullscreen_menu(void)
  92 {
  93         unsigned char *buf=NULL;
  94
  95         if (ogl_readpixels_ok){
  96                 MALLOC(buf,unsigned char,grd_curscreen->sc_w*grd_curscreen->sc_h*3);
  97                 glReadBuffer(GL_FRONT);
  98                 glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
  99         }
 100
 101         do_fullscreen(!ogl_fullscreen);
 102
 103         if (ogl_readpixels_ok){
 104 //              glWritePixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
 105                 glRasterPos2f(0,0);
 106                 glDrawPixels(grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
 107                 free(buf);
 108         }
 109         //      grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
 110
 111         return ogl_fullscreen;
 112 }
 113
 114 void ogl_init_state(void){
 115         /* select clearing (background) color   */
 116         glClearColor(0.0, 0.0, 0.0, 0.0);
 117         glShadeModel(GL_SMOOTH);
 118
 119         /* initialize viewing values */
 120         glMatrixMode(GL_PROJECTION);
 121         glLoadIdentity();
 122         glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
 123         glScalef(1.0, -1.0, 1.0);
 124         glTranslatef(0.0, -1.0, 0.0);
 125         gr_palette_step_up(0,0,0);//in case its left over from in game
 126 }
 127
 128 int last_screen_mode=-1;
 129
 130 void ogl_set_screen_mode(void){
 131         if (last_screen_mode==Screen_mode)
 132                 return;
 133         OGL_VIEWPORT(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h);
 134 //      OGL_VIEWPORT(grd_curcanv->cv_bitmap.bm_x,grd_curcanv->cv_bitmap.bm_y,grd_curcanv->cv_bitmap.bm_w,grd_curcanv->cv_bitmap.bm_h);
 135         if (Screen_mode==SCREEN_GAME){
 136                 glDrawBuffer(GL_BACK);
 137         }else{
 138                 glClearColor(0.0, 0.0, 0.0, 0.0);
 139                 glDrawBuffer(GL_FRONT);
 140                 glClear(GL_COLOR_BUFFER_BIT);
 141                 glMatrixMode(GL_PROJECTION);
 142                 glLoadIdentity();//clear matrix
 143                 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
 144                 glMatrixMode(GL_MODELVIEW);
 145                 glLoadIdentity();//clear matrix
 146                 glEnable(GL_BLEND);
 147                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 148         }
 149         last_screen_mode=Screen_mode;
 150 }
 151
 152 void vid_update()
 153 {
 154         if (gl_initialized){
 155
 156                 if(Screen_mode != SCREEN_GAME){
 157                         glFlush();
 158                 }
 159         }
 160 }
 161
 162 const char *gl_vendor, *gl_renderer, *gl_version, *gl_extensions;
 163
 164 void ogl_get_verinfo(void)
 165 {
 166         long t;
 167         GLint sgi_max_textures = -1;
 168         GLint arb_max_textures = -1;
 169 #ifdef GL_NV_register_combiners
 170         GLint nv_register_combiners = -1;
 171 #endif
 172         float anisotropic_max = 0;
 173
 174         gl_vendor = (const char *) glGetString (GL_VENDOR);
 175         gl_renderer = (const char *) glGetString (GL_RENDERER);
 176         gl_version = (const char *) glGetString (GL_VERSION);
 177         gl_extensions = (const char *) glGetString (GL_EXTENSIONS);
 178
 179         con_printf(CON_VERBOSE, "OpenGL: vendor: %s\nOpenGL: renderer: %s\nOpenGL: version: %s\n",gl_vendor,gl_renderer,gl_version);
 180
 181         ogl_intensity4_ok = 1;
 182         ogl_luminance4_alpha4_ok = 1;
 183         ogl_rgba2_ok = 1;
 184         ogl_gettexlevelparam_ok = 1;
 185         ogl_setgammaramp_ok = 1;
 186
 187 #ifdef WGL_VIDEO
 188         dglMultiTexCoord2fARB = (glMultiTexCoord2fARB_fp)wglGetProcAddress("glMultiTexCoord2fARB");
 189         dglActiveTextureARB = (glActiveTextureARB_fp)wglGetProcAddress("glActiveTextureARB");
 190         dglMultiTexCoord2fSGIS = (glMultiTexCoord2fSGIS_fp)wglGetProcAddress("glMultiTexCoord2fSGIS");
 191         dglSelectTextureSGIS = (glSelectTextureSGIS_fp)wglGetProcAddress("glSelectTextureSGIS");
 192         dglColorTableEXT = (glColorTableEXT_fp)wglGetProcAddress("glColorTableEXT");
 193         dglCombinerParameteriNV = (glCombinerParameteriNV_fp)wglGetProcAddress("glCombinerParameteriNV");
 194         dglCombinerInputNV = (glCombinerInputNV_fp)wglGetProcAddress("glCombinerInputNV");
 195         dglCombinerOutputNV = (glCombinerOutputNV_fp)wglGetProcAddress("glCombinerOutputNV");
 196         dglFinalCombinerInputNV = (glFinalCombinerInputNV_fp)wglGetProcAddress("glFinalCombinerInputNV");
 197 #endif
 198
 199 #ifdef GL_ARB_multitexture
 200         ogl_arb_multitexture_ok = (strstr(gl_extensions, "GL_ARB_multitexture") != 0 && glActiveTextureARB != 0);
 201         mprintf((0,"c:%p d:%p e:%p\n",strstr(gl_extensions,"GL_ARB_multitexture"),glActiveTextureARB,glBegin));
 202 #endif
 203 #ifdef GL_SGIS_multitexture
 204         ogl_sgis_multitexture_ok = (strstr(gl_extensions, "GL_SGIS_multitexture") != 0 && glSelectTextureSGIS != 0);
 205         mprintf((0,"a:%p b:%p\n",strstr(gl_extensions,"GL_SGIS_multitexture"),glSelectTextureSGIS));
 206 #endif
 207         ogl_nv_texture_env_combine4_ok = (strstr(gl_extensions, "GL_NV_texture_env_combine4") != 0);
 208 #ifdef GL_NV_register_combiners
 209         ogl_nv_register_combiners_ok=(strstr(gl_extensions,"GL_NV_register_combiners")!=0 && glCombinerOutputNV!=0);
 210 #endif
 211
 212         ogl_ext_texture_filter_anisotropic_ok = (strstr(gl_extensions, "GL_EXT_texture_filter_anisotropic") != 0);
 213         if (ogl_ext_texture_filter_anisotropic_ok)
 214                 glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &anisotropic_max);
 215
 216 #ifdef GL_EXT_paletted_texture
 217         ogl_paletted_texture_ok = (strstr(gl_extensions, "GL_EXT_paletted_texture") != 0 && glColorTableEXT != 0);
 218         ogl_shared_palette_ok = (strstr(gl_extensions, "GL_EXT_shared_texture_palette") != 0 && ogl_paletted_texture_ok);
 219 #endif
 220         //add driver specific hacks here.  whee.
 221         if ((stricmp(gl_renderer,"Mesa NVIDIA RIVA 1.0\n")==0 || stricmp(gl_renderer,"Mesa NVIDIA RIVA 1.2\n")==0) && stricmp(gl_version,"1.2 Mesa 3.0")==0){
 222                 ogl_intensity4_ok=0;//ignores alpha, always black background instead of transparent.
 223                 ogl_readpixels_ok=0;//either just returns all black, or kills the X server entirely
 224                 ogl_gettexlevelparam_ok=0;//returns random data..
 225         }
 226         if (stricmp(gl_vendor,"Matrox Graphics Inc.")==0){
 227                 //displays garbage. reported by
 228                 //  redomen@crcwnet.com (render="Matrox G400" version="1.1.3 5.52.015")
 229                 //  orulz (Matrox G200)
 230                 ogl_intensity4_ok=0;
 231         }
 232 #ifdef macintosh
 233         if (stricmp(gl_renderer,"3dfx Voodoo 3")==0){ // strangely, includes Voodoo 2
 234                 ogl_gettexlevelparam_ok=0; // Always returns 0
 235         }
 236 #endif
 237
 238         //allow overriding of stuff.
 239 #ifdef GL_ARB_multitexture
 240         if ((t=FindArg("-gl_arb_multitexture_ok"))){
 241                 ogl_arb_multitexture_ok=atoi(Args[t+1]);
 242         }
 243         if (ogl_arb_multitexture_ok)
 244                 glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &arb_max_textures);
 245 #endif
 246 #ifdef GL_SGIS_multitexture
 247         if ((t=FindArg("-gl_sgis_multitexture_ok"))){
 248                 ogl_sgis_multitexture_ok=atoi(Args[t+1]);
 249         }
 250         if (ogl_sgis_multitexture_ok)
 251                 glGetIntegerv(GL_MAX_TEXTURES_SGIS, &sgi_max_textures);
 252 #endif
 253 #ifdef GL_NV_register_combiners
 254         if ((t = FindArg("-gl_nv_register_combiners_ok")))
 255         {
 256                 ogl_nv_register_combiners_ok=atoi(Args[t + 1]);
 257         }
 258         if (ogl_nv_register_combiners_ok)
 259                 glGetIntegerv(GL_MAX_GENERAL_COMBINERS_NV, &nv_register_combiners);
 260 #endif
 261 #ifdef GL_EXT_paletted_texture
 262         if ((t = FindArg("-gl_paletted_texture_ok")))
 263         {
 264                 ogl_paletted_texture_ok = atoi(Args[t + 1]);
 265         }
 266         if ((t = FindArg("-gl_shared_palette_ok")))
 267         {
 268                 ogl_shared_palette_ok = atoi(Args[t + 1]);
 269         }
 270         ogl_shared_palette_ok = ogl_shared_palette_ok && ogl_paletted_texture_ok; // shared palettes require palette support in the first place, obviously ;)
 271         printf("gl_paletted_texture: %i  gl_shared_palette: %i  (using paletted textures: %i)\n", ogl_paletted_texture_ok, ogl_shared_palette_ok, ogl_shared_palette_ok);
 272 #endif
 273         if ((t=FindArg("-gl_intensity4_ok"))){
 274                 ogl_intensity4_ok=atoi(Args[t+1]);
 275         }
 276         if ((t=FindArg("-gl_luminance4_alpha4_ok"))){
 277                 ogl_luminance4_alpha4_ok=atoi(Args[t+1]);
 278         }
 279         if ((t=FindArg("-gl_rgba2_ok"))){
 280                 ogl_rgba2_ok=atoi(Args[t+1]);
 281         }
 282         if ((t=FindArg("-gl_readpixels_ok"))){
 283                 ogl_readpixels_ok=atoi(Args[t+1]);
 284         }
 285         if ((t=FindArg("-gl_gettexlevelparam_ok"))){
 286                 ogl_gettexlevelparam_ok=atoi(Args[t+1]);
 287         }
 288         if ((t=FindArg("-gl_setgammaramp_ok")))
 289         {
 290                 ogl_setgammaramp_ok = atoi(Args[t + 1]);
 291         }
 292
 293         con_printf(CON_DEBUG, "gl_arb_multitexture:%i(%i units) gl_sgis_multitexture:%i(%i units) gl_nv_texture_env_combine4:%i\n", ogl_arb_multitexture_ok, arb_max_textures, ogl_sgis_multitexture_ok, sgi_max_textures, ogl_nv_texture_env_combine4_ok);
 294 #ifdef GL_NV_register_combiners
 295         con_printf(CON_DEBUG, "gl_nv_register_combiners:%i(%i stages)\n", ogl_nv_register_combiners_ok, nv_register_combiners);
 296 #endif
 297         con_printf(CON_DEBUG, "gl_intensity4:%i gl_luminance4_alpha4:%i gl_rgba2:%i gl_readpixels:%i gl_gettexlevelparam:%i gl_setgammaramp_ok:%i gl_ext_texture_filter_anisotropic:%i(%f max)\n", ogl_intensity4_ok, ogl_luminance4_alpha4_ok, ogl_rgba2_ok, ogl_readpixels_ok, ogl_gettexlevelparam_ok, ogl_setgammaramp_ok, ogl_ext_texture_filter_anisotropic_ok, anisotropic_max);
 298 }
 299
 300
 301 int vid_check_mode(uint32_t mode)
 302 {
 303         int w, h;
 304
 305         w = SM_W(mode);
 306         h = SM_H(mode);
 307         return ogl_check_mode(w, h); // platform specific code
 308 }
 309
 310
 311 uint32_t Vid_current_mode;
 312
 313
 314 int vid_set_mode(uint32_t mode)
 315 {
 316         short w, h;
 317
 318 #ifdef NOGRAPH
 319 return 0;
 320 #endif
 321 //      mode=0;
 322         if (mode<=0)
 323                 return 0;
 324
 325         if (mode == Vid_current_mode)
 326                 return 0;
 327
 328         w=SM_W(mode);
 329         h=SM_H(mode);
 330         Vid_current_mode = mode;
 331
 332         //if (screen != NULL) gr_palette_clear();
 333
 334 //      ogl_init_state();
 335
 336         gr_init_screen(BM_OGL, w, h, 0, 0, w, NULL);
 337
 338         //gr_enable_default_palette_loading();
 339
 340         ogl_init_window(w,h);//platform specific code
 341
 342         ogl_get_verinfo();
 343
 344         OGL_VIEWPORT(0,0,w,h);
 345
 346         ogl_set_screen_mode();
 347
 348 //      gamefont_choose_game_font(w,h);
 349
 350         return 0;
 351 }
 352
 353 #define GLstrcmptestr(a,b) if (stricmp(a,#b)==0 || stricmp(a,"GL_" #b)==0)return GL_ ## b;
 354 int ogl_atotexfilti(char *a,int min){
 355         GLstrcmptestr(a,NEAREST);
 356         GLstrcmptestr(a,LINEAR);
 357         if (min){//mipmaps are valid only for the min filter
 358                 GLstrcmptestr(a,NEAREST_MIPMAP_NEAREST);
 359                 GLstrcmptestr(a,NEAREST_MIPMAP_LINEAR);
 360                 GLstrcmptestr(a,LINEAR_MIPMAP_NEAREST);
 361                 GLstrcmptestr(a,LINEAR_MIPMAP_LINEAR);
 362         }
 363         Error("unknown/invalid texture filter %s\n",a);
 364 //      return GL_NEAREST;
 365 }
 366 int ogl_testneedmipmaps(int i){
 367         switch (i){
 368                 case GL_NEAREST:
 369                 case GL_LINEAR:
 370                         return 0;
 371                 case GL_NEAREST_MIPMAP_NEAREST:
 372                 case GL_NEAREST_MIPMAP_LINEAR:
 373                 case GL_LINEAR_MIPMAP_NEAREST:
 374                 case GL_LINEAR_MIPMAP_LINEAR:
 375                         return 1;
 376         }
 377         Error("unknown texture filter %x\n",i);
 378 //      return -1;
 379 }
 380
 381
 382 void ogl_cmd_texturemode(int argc, char **argv)
 383 {
 384         if (argc < 2) {
 385                 cmd_insertf("help %s", argv[0]);
 386                 return;
 387         }
 388
 389         if (!stricmp(argv[1], "GL_NEAREST")) {
 390                 GL_texminfilt = GL_NEAREST;
 391                 GL_texmagfilt = GL_NEAREST;
 392         } else if (!stricmp(argv[1], "GL_LINEAR")) {
 393                 GL_texminfilt = GL_LINEAR;
 394                 GL_texmagfilt = GL_LINEAR;
 395         } else if (!stricmp(argv[1], "GL_NEAREST_MIPMAP_NEAREST")) {
 396                 GL_texminfilt = GL_NEAREST_MIPMAP_NEAREST;
 397                 GL_texmagfilt = GL_NEAREST;
 398         } else if (!stricmp(argv[1], "GL_LINEAR_MIPMAP_NEAREST")) {
 399                 GL_texminfilt = GL_LINEAR_MIPMAP_NEAREST;
 400                 GL_texmagfilt = GL_LINEAR;
 401         } else if (!stricmp(argv[1], "GL_NEAREST_MIPMAP_LINEAR")) {
 402                 GL_texminfilt = GL_NEAREST_MIPMAP_LINEAR;
 403                 GL_texmagfilt = GL_NEAREST;
 404         } else if (!stricmp(argv[1], "GL_LINEAR_MIPMAP_LINEAR")) {
 405                 GL_texminfilt = GL_LINEAR_MIPMAP_LINEAR;
 406                 GL_texmagfilt = GL_LINEAR;
 407         } else
 408                 return;
 409
 410         GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
 411
 412         ogl_smash_texture_list_internal();
 413 }
 414
 415
 416 #ifdef _WIN32
 417 char *OglLibPath="opengl32.dll";
 418
 419 int ogl_rt_loaded=0;
 420 int ogl_init_load_library(void)
 421 {
 422         int retcode=0;
 423         if (!ogl_rt_loaded){
 424                 retcode = OpenGL_LoadLibrary(true);
 425                 if(retcode)
 426                 {
 427                         mprintf((0,"Opengl loaded ok\n"));
 428
 429                         if(!glEnd)
 430                         {
 431                                 Error("Opengl: Functions not imported\n");
 432                         }
 433                 }else{
 434                         Error("Opengl: error loading %s\n", OglLibPath);
 435                 }
 436                 ogl_rt_loaded=1;
 437         }
 438         return retcode;
 439 }
 440 #endif
 441
 442
 443 int vid_init(void)
 444 {
 445         int t, glt = 0;
 446
 447         // Only do this function once!
 448         if (vid_installed == 1)
 449                 return -1;
 450
 451 #ifdef _WIN32
 452         ogl_init_load_library();
 453 #endif
 454
 455 #ifdef VID_SUPPORTS_FULLSCREEN_TOGGLE
 456         if (FindArg("-gl_voodoo")){
 457                 ogl_voodoohack=1;
 458                 vid_toggle_fullscreen();
 459         }
 460         if (FindArg("-fullscreen"))
 461                 vid_toggle_fullscreen();
 462 #endif
 463         if ((glt=FindArg("-gl_alttexmerge")))
 464                 ogl_alttexmerge=1;
 465         if ((t=FindArg("-gl_stdtexmerge")))
 466                 if (t>=glt)//allow overriding of earlier args
 467                         ogl_alttexmerge=0;
 468
 469         if ((glt = FindArg("-gl_16bittextures")))
 470         {
 471                 ogl_rgba_internalformat = GL_RGB5_A1;
 472                 ogl_rgb_internalformat = GL_RGB5;
 473         }
 474
 475         if ((glt=FindArg("-gl_mipmap"))){
 476                 GL_texmagfilt=GL_LINEAR;
 477                 GL_texminfilt=GL_LINEAR_MIPMAP_NEAREST;
 478         }
 479         if ((glt=FindArg("-gl_trilinear")))
 480         {
 481                 GL_texmagfilt = GL_LINEAR;
 482                 GL_texminfilt = GL_LINEAR_MIPMAP_LINEAR;
 483         }
 484         if ((t=FindArg("-gl_simple"))){
 485                 if (t>=glt){//allow overriding of earlier args
 486                         glt=t;
 487                         GL_texmagfilt=GL_NEAREST;
 488                         GL_texminfilt=GL_NEAREST;
 489                 }
 490         }
 491         if ((t=FindArg("-gl_texmagfilt")) || (t=FindArg("-gl_texmagfilter"))){
 492                 if (t>=glt)//allow overriding of earlier args
 493                         GL_texmagfilt=ogl_atotexfilti(Args[t+1],0);
 494         }
 495         if ((t=FindArg("-gl_texminfilt")) || (t=FindArg("-gl_texminfilter"))){
 496                 if (t>=glt)//allow overriding of earlier args
 497                         GL_texminfilt=ogl_atotexfilti(Args[t+1],1);
 498         }
 499         GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
 500
 501         if ((t = FindArg("-gl_anisotropy")) || (t = FindArg("-gl_anisotropic")))
 502         {
 503                 GL_texanisofilt=atof(Args[t + 1]);
 504         }
 505
 506         mprintf((0,"gr_init: texmagfilt:%x texminfilt:%x needmipmaps=%i anisotropic:%f\n",GL_texmagfilt,GL_texminfilt,GL_needmipmaps,GL_texanisofilt));
 507
 508
 509         if ((t=FindArg("-gl_vidmem"))){
 510                 ogl_mem_target=atoi(Args[t+1])*1024*1024;
 511         }
 512         if ((t=FindArg("-gl_reticle"))){
 513                 gl_reticle=atoi(Args[t+1]);
 514         }
 515         //printf("ogl_mem_target=%i\n",ogl_mem_target);
 516
 517         ogl_init();//platform specific initialization
 518
 519         ogl_init_texture_list_internal();
 520
 521         cmd_addcommand("gl_texturemode", ogl_cmd_texturemode, "gl_texturemode <x>\n" "    use OpenGL texture mode <x>. Available mode are\n"
 522                                                                                      "        GL_NEAREST\n"
 523                                                                                      "        GL_LINEAR\n"
 524                                                                                      "        GL_NEAREST_MIPMAP_NEAREST\n"
 525                                                                                      "        GL_LINEAR_MIPMAP_NEAREST\n"
 526                                                                                      "        GL_NEAREST_MIPMAP_LINEAR\n"
 527                                                                                      "        GL_LINEAR_MIPMAP_LINEAR");
 528
 529         vid_installed = 1;
 530
 531         atexit(vid_close);
 532
 533         return 0;
 534 }
 535
 536
 537 void vid_close(void)
 538 {
 539 //      mprintf((0,"ogl init: %s %s %s - %s\n",glGetString(GL_VENDOR),glGetString(GL_RENDERER),glGetString(GL_VERSION),glGetString,(GL_EXTENSIONS)));
 540         ogl_brightness_r = ogl_brightness_g = ogl_brightness_b = 0;
 541         ogl_setbrightness_internal();
 542
 543         ogl_close();//platform specific code
 544
 545 #ifdef _WIN32
 546         if (ogl_rt_loaded)
 547                 OpenGL_LoadLibrary(false);
 548 #endif
 549 }
 550 extern int r_upixelc;
 551 void ogl_upixelc(int x, int y, int c){
 552         r_upixelc++;
 553 //      printf("gr_upixelc(%i,%i,%i)%i\n",x,y,c,Function_mode==FMODE_GAME);
 554 //      if(Function_mode != FMODE_GAME){
 555 //              grd_curcanv->cv_bitmap.bm_data[y*grd_curscreen->sc_canvas.cv_bitmap.bm_w+x]=c;
 556 //      }else{
 557                 OGL_DISABLE(TEXTURE_2D);
 558                 glPointSize(1.0);
 559                 glBegin(GL_POINTS);
 560 //              glBegin(GL_LINES);
 561 //      ogl_pal=gr_current_pal;
 562                 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
 563 //      ogl_pal=gr_palette;
 564                 glVertex2f((x + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width, 1.0 - (y + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height);
 565 //              glVertex2f(x/((float)last_width+1),1.0-y/((float)last_height+1));
 566                 glEnd();
 567 //      }
 568 }
 569 void ogl_urect(int left,int top,int right,int bot){
 570         GLfloat xo,yo,xf,yf;
 571         int c=COLOR;
 572
 573         xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
 574         xf = (right + 1 + grd_curcanv->cv_bitmap.bm_x) / (float)last_width;
 575         yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
 576         yf = 1.0 - (bot + 1 + grd_curcanv->cv_bitmap.bm_y) / (float)last_height;
 577
 578         OGL_DISABLE(TEXTURE_2D);
 579         if (Gr_scanline_darkening_level >= GR_FADE_LEVELS)
 580                 glColor3f(CPAL2Tr(c), CPAL2Tg(c), CPAL2Tb(c));
 581         else
 582                 glColor4f(CPAL2Tr(c), CPAL2Tg(c), CPAL2Tb(c), 1.0 - (float)Gr_scanline_darkening_level / ((float)GR_FADE_LEVELS - 1.0));
 583         glBegin(GL_QUADS);
 584         glVertex2f(xo,yo);
 585         glVertex2f(xo,yf);
 586         glVertex2f(xf,yf);
 587         glVertex2f(xf,yo);
 588         glEnd();
 589 }
 590 void ogl_ulinec(int left,int top,int right,int bot,int c){
 591         GLfloat xo,yo,xf,yf;
 592
 593         xo = (left + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
 594         xf = (right + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
 595         yo = 1.0 - (top + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
 596         yf = 1.0 - (bot + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
 597
 598         OGL_DISABLE(TEXTURE_2D);
 599         glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
 600         glBegin(GL_LINES);
 601         glVertex2f(xo,yo);
 602         glVertex2f(xf,yf);
 603         glEnd();
 604 }
 605
 606
 607 GLfloat last_r=0, last_g=0, last_b=0;
 608 int do_pal_step=0;
 609 void ogl_do_palfx(void){
 610 //      GLfloat r,g,b,a;
 611         OGL_DISABLE(TEXTURE_2D);
 612         if (gr_palette_faded_out){
 613 /*              glEnable(GL_BLEND);
 614                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/
 615                 glColor3f(0,0,0);
 616 //              r=g=b=0.0;a=1.0;
 617         }else{
 618                 if (do_pal_step){
 619                         //glBlendFunc(GL_SRC_COLOR, GL_DST_COLOR);
 620                         glEnable(GL_BLEND);
 621                         glBlendFunc(GL_ONE,GL_ONE);
 622                         glColor3f(last_r,last_g,last_b);
 623 //                      r=f2fl(last_r);g=f2fl(last_g);b=f2fl(last_b);a=0.5;
 624                 }else
 625                         return;
 626         }
 627
 628
 629         glBegin(GL_QUADS);
 630         glVertex2f(0,0);
 631         glVertex2f(0,1);
 632         glVertex2f(1,1);
 633         glVertex2f(1,0);
 634         glEnd();
 635
 636         glEnable(GL_BLEND);
 637         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 638 }
 639
 640 void gr_palette_clear()
 641 {
 642         gr_palette_faded_out=1;
 643 }
 644
 645
 646 int ogl_brightness_ok = 0;
 647 int ogl_setgammaramp_ok = 1;
 648 int ogl_brightness_r = 0, ogl_brightness_g = 0, ogl_brightness_b = 0;
 649 static int old_b_r = 0, old_b_g = 0, old_b_b = 0;
 650
 651 void gr_palette_step_up(int r, int g, int b)
 652 {
 653         if (gr_palette_faded_out)
 654                 return;
 655
 656         old_b_r = ogl_brightness_r;
 657         old_b_g = ogl_brightness_g;
 658         old_b_b = ogl_brightness_b;
 659
 660         ogl_brightness_r = max(r + gr_palette_gamma.intval, 0);
 661         ogl_brightness_g = max(g + gr_palette_gamma.intval, 0);
 662         ogl_brightness_b = max(b + gr_palette_gamma.intval, 0);
 663
 664         if (ogl_setgammaramp_ok &&
 665             (old_b_r != ogl_brightness_r ||
 666              old_b_g != ogl_brightness_g ||
 667              old_b_b != ogl_brightness_b))
 668                 ogl_brightness_ok = !ogl_setbrightness_internal();
 669
 670         if (!ogl_setgammaramp_ok || !ogl_brightness_ok)
 671         {
 672                 last_r = ogl_brightness_r / 63.0;
 673                 last_g = ogl_brightness_g / 63.0;
 674                 last_b = ogl_brightness_b / 63.0;
 675
 676                 do_pal_step = (r || g || b || gr_palette_gamma.intval);
 677         }
 678         else
 679         {
 680                 do_pal_step = 0;
 681         }
 682 }
 683
 684
 685 void gr_palette_load( ubyte *pal )
 686 {
 687  int i;//, j;
 688
 689  for (i=0; i<768; i++ ) {
 690      gr_current_pal[i] = pal[i];
 691      if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
 692  }
 693  //palette = screen->format->palette;
 694
 695  gr_palette_faded_out=0;
 696
 697         gr_palette_step_up(0, 0, 0); // make ogl_setbrightness_internal get run so that menus get brightened too.
 698
 699  init_computed_colors();
 700
 701         ogl_init_shared_palette();
 702 }
 703
 704
 705
 706 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
 707 {
 708         int j;
 709         unsigned char *buf;
 710
 711         if (gr_palette_faded_out) return 0;
 712
 713         if (grd_fades_disabled || !ogl_readpixels_ok) {
 714                 gr_palette_faded_out = 1;
 715                 return 0;
 716         }
 717
 718         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 719         glEnable(GL_BLEND);
 720         glDisable(GL_DEPTH_TEST);
 721
 722         MALLOC(buf, unsigned char, grd_curscreen->sc_w * grd_curscreen->sc_h * 3);
 723         glReadBuffer(GL_FRONT);
 724         glReadPixels(0, 0, grd_curscreen->sc_w, grd_curscreen->sc_h, GL_RGB, GL_UNSIGNED_BYTE, buf);
 725
 726         for (j = 0; j < nsteps; j++) {
 727                 glRasterPos2f(0,0);
 728                 glDrawPixels(grd_curscreen->sc_w, grd_curscreen->sc_h, GL_RGB, GL_UNSIGNED_BYTE, buf);
 729
 730                 glColor4f(0.0, 0.0, 0.0, (float)(j) / (nsteps - 1)); // go from 0 to 1
 731                 glBegin(GL_QUADS);
 732                 glVertex2i(0, 0);
 733                 glVertex2i(0, 1);
 734                 glVertex2i(1, 1);
 735                 glVertex2i(1, 0);
 736                 glEnd();
 737
 738                 glFlush();
 739
 740                 timer_delay(f0_1 / 10);
 741         }
 742         d_free(buf);
 743
 744         gr_palette_faded_out=1;
 745         return 0;
 746 }
 747
 748
 749
 750 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
 751 {
 752         int j;
 753         unsigned char *buf;
 754
 755         if (!gr_palette_faded_out) return 0;
 756
 757         if (grd_fades_disabled || !ogl_readpixels_ok) {
 758                 gr_palette_faded_out = 0;
 759                 return 0;
 760         }
 761
 762         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 763         glEnable(GL_BLEND);
 764         glDisable(GL_DEPTH_TEST);
 765
 766         MALLOC(buf, unsigned char, grd_curscreen->sc_w * grd_curscreen->sc_h * 3);
 767         glReadBuffer(GL_FRONT);
 768         glReadPixels(0, 0, grd_curscreen->sc_w, grd_curscreen->sc_h, GL_RGB, GL_UNSIGNED_BYTE, buf);
 769
 770         for (j = 0; j < nsteps; j++) {
 771                 glRasterPos2f(0,0);
 772                 glDrawPixels(grd_curscreen->sc_w, grd_curscreen->sc_h, GL_RGB, GL_UNSIGNED_BYTE, buf);
 773
 774                 glColor4f(0.0, 0.0, 0.0, (float)(nsteps - 1 - j) / (nsteps - 1)); // go from 1 to 0
 775                 glBegin(GL_QUADS);
 776                 glVertex2i(0, 0);
 777                 glVertex2i(0, 1);
 778                 glVertex2i(1, 1);
 779                 glVertex2i(1, 0);
 780                 glEnd();
 781
 782                 glFlush();
 783
 784                 timer_delay(f0_1 / 10);
 785         }
 786         d_free(buf);
 787
 788         gr_palette_faded_out=0;
 789         return 0;
 790 }
 791
 792
 793
 794 void gr_palette_read(ubyte * pal)
 795 {
 796         int i;
 797         for (i=0; i<768; i++ ) {
 798                 pal[i]=gr_current_pal[i];
 799                 if (pal[i] > 63) pal[i] = 63;
 800         }
 801 }
 802
 803 //writes out an uncompressed RGB .tga file
 804 //if we got really spiffy, we could optionally link in libpng or something, and use that.
 805 void write_bmp(char *savename,int w,int h,unsigned char *buf){
 806         PHYSFS_file *f;
 807
 808         f = PHYSFSX_openWriteBuffered(savename);
 809
 810         if (f) {
 811                 GLubyte    targaMagic[12] = { 0, //no identification field
 812                          0,//no colormap
 813                          2,//RGB image (well, BGR, actually)
 814                          0, 0, 0, 0, 0, 0, 0, 0, 0 };//no colormap or image origin stuff.
 815                 GLubyte blah;
 816                 int r;
 817                 GLubyte *s;
 818                 int x,y;
 819
 820                 //write .TGA header.
 821                 PHYSFS_write(f, targaMagic, sizeof(targaMagic), 1);
 822                 PHYSFS_writeSLE16(f, w);
 823                 PHYSFS_writeSLE16(f, h);
 824                 PHYSFSX_writeU8(f, 24); // 24 bpp
 825                 PHYSFSX_writeU8(f, 0);  // no attribute bits, origin is lowerleft, no interleave
 826
 827                 s=buf;
 828                 for (y=0;y<h;y++){//TGAs use BGR ordering of data.
 829                         for (x=0;x<w;x++){
 830                                 blah=s[0];
 831                                 s[0]=s[2];
 832                                 s[2]=blah;
 833                                 s+=3;
 834                         }
 835                 }
 836                 x=0;y=w*h*3;
 837                 while (y > 0)
 838                 {
 839                         r = (int)PHYSFS_write(f, buf + x, 1, y);
 840                         if (r<=0){
 841                                 mprintf((0,"screenshot error, couldn't write to %s (err %i)\n",savename,errno));
 842                                 break;
 843                         }
 844                         x+=r;y-=r;
 845                 }
 846                 PHYSFS_close(f);
 847         }else{
 848                 mprintf((0,"screenshot error, couldn't open %s (err %i)\n",savename,errno));
 849         }
 850 }
 851 void save_screen_shot(int automap_flag)
 852 {
 853 //      fix t1;
 854         char message[100];
 855         static int savenum=0;
 856         char savename[13];
 857         unsigned char *buf;
 858
 859         if (!ogl_readpixels_ok){
 860                 if (!automap_flag)
 861                         hud_message(MSGC_GAME_FEEDBACK,"glReadPixels not supported on your configuration");
 862                 return;
 863         }
 864
 865         stop_time();
 866
 867 //added/changed on 10/31/98 by Victor Rachels to fix overwrite each new game
 868         do
 869         {
 870                 if (savenum == 9999)
 871                         savenum = 0;
 872                 sprintf(savename, "scrn%04d.tga", savenum++);
 873         } while (PHYSFS_exists(savename));
 874
 875         sprintf( message, "%s '%s'", TXT_DUMPING_SCREEN, savename );
 876 //end this section addition/change - Victor Rachels
 877
 878         if (automap_flag) {
 879 //      save_font = grd_curcanv->cv_font;
 880 //      gr_set_curfont(GAME_FONT);
 881 //      gr_set_fontcolor(gr_find_closest_color_current(0,31,0),-1);
 882 //      gr_get_string_size(message,&w,&h,&aw);
 883 //              modex_print_message(32, 2, message);
 884         } else {
 885                 hud_message(MSGC_GAME_FEEDBACK, "%s", message);
 886         }
 887
 888         buf = d_malloc(grd_curscreen->sc_w*grd_curscreen->sc_h*3);
 889         glReadBuffer(GL_FRONT);
 890         glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
 891         write_bmp(savename,grd_curscreen->sc_w,grd_curscreen->sc_h,buf);
 892         d_free(buf);
 893
 894         key_flush();
 895         start_time();
 896 }