2 * $Source: /cvs/cvsroot/d2x/arch/ogl/gr.c,v $
5 * $Date: 2001-11-08 10:19:52 $
7 * // OGL video functions. - Added 9/15/99 Matthew Mueller
9 * $Log: not supported by cvs2svn $
10 * Revision 1.3 2001/11/04 09:00:25 bradleyb
11 * Enable d1x-style hud_message
13 * Revision 1.2 2001/10/31 07:35:47 bradleyb
16 * Revision 1.1 2001/10/25 08:25:34 bradleyb
17 * Finished moving stuff to arch/blah. I know, it's ugly, but It'll be easier to sync with d1x.
19 * Revision 1.7 2001/10/25 02:23:48 bradleyb
22 * Revision 1.6 2001/10/18 23:59:23 bradleyb
23 * Changed __ENV_LINUX__ to __linux__
25 * Revision 1.5 2001/10/12 00:18:40 bradleyb
26 * Switched from Cygwin to mingw32 on MS boxes. Vastly improved compilability.
28 * Revision 1.4 2001/01/29 13:47:52 bradleyb
29 * Fixed build, some minor cleanups.
46 #include <sys/types.h>
78 void gr_palette_clear(); // Function prototype for gr_init;
84 int gr_check_fullscreen(void){
85 return ogl_fullscreen;
88 void gr_do_fullscreen(int f){
90 ogl_fullscreen=1;//force fullscreen mode on voodoos.
94 ogl_do_fullscreen_internal();
98 int gr_toggle_fullscreen(void){
99 gr_do_fullscreen(!ogl_fullscreen);
100 // grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
101 return ogl_fullscreen;
104 int arch_toggle_fullscreen_menu(void){
105 unsigned char *buf=NULL;
107 if (ogl_readpixels_ok){
108 MALLOC(buf,unsigned char,grd_curscreen->sc_w*grd_curscreen->sc_h*3);
109 glReadBuffer(GL_FRONT);
110 glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
113 gr_do_fullscreen(!ogl_fullscreen);
115 if (ogl_readpixels_ok){
116 // glWritePixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
118 glDrawPixels(grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
121 // grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
123 return ogl_fullscreen;
126 void ogl_init_state(void){
127 /* select clearing (background) color */
128 glClearColor(0.0, 0.0, 0.0, 0.0);
129 glShadeModel(GL_SMOOTH);
131 /* initialize viewing values */
132 glMatrixMode(GL_PROJECTION);
134 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
135 glScalef(1.0, -1.0, 1.0);
136 glTranslatef(0.0, -1.0, 0.0);
137 gr_palette_step_up(0,0,0);//in case its left over from in game
140 int last_screen_mode=-1;
142 void ogl_set_screen_mode(void){
143 if (last_screen_mode==Screen_mode)
145 OGL_VIEWPORT(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h);
146 // 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);
147 if (Screen_mode==SCREEN_GAME){
148 glDrawBuffer(GL_BACK);
150 glClearColor(0.0, 0.0, 0.0, 0.0);
151 glDrawBuffer(GL_FRONT);
152 glClear(GL_COLOR_BUFFER_BIT);
153 glMatrixMode(GL_PROJECTION);
154 glLoadIdentity();//clear matrix
155 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
156 glMatrixMode(GL_MODELVIEW);
157 glLoadIdentity();//clear matrix
159 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
161 last_screen_mode=Screen_mode;
168 if(Screen_mode != SCREEN_GAME){
174 const char *gl_vendor,*gl_renderer,*gl_version,*gl_extensions;
176 void ogl_get_verinfo(void){
178 gl_vendor=glGetString(GL_VENDOR);
179 gl_renderer=glGetString(GL_RENDERER);
180 gl_version=glGetString(GL_VERSION);
181 gl_extensions=glGetString(GL_EXTENSIONS);
183 printf("gl vendor:%s renderer:%s version:%s extensions:%s\n",gl_vendor,gl_renderer,gl_version,gl_extensions);
185 ogl_intensity4_ok=1;ogl_luminance4_alpha4_ok=1;ogl_rgba2_ok=1;ogl_gettexlevelparam_ok=1;
188 dglMultiTexCoord2fARB = (glMultiTexCoord2fARB_fp)wglGetProcAddress("glMultiTexCoord2fARB");
189 dglActiveTextureARB = (glActiveTextureARB_fp)wglGetProcAddress("glActiveTextureARB");
190 dglMultiTexCoord2fSGIS = (glMultiTexCoord2fSGIS_fp)wglGetProcAddress("glMultiTexCoord2fSGIS");
191 dglSelectTextureSGIS = (glSelectTextureSGIS_fp)wglGetProcAddress("glSelectTextureSGIS");
194 //multitexturing doesn't work yet.
195 #ifdef GL_ARB_multitexture
196 ogl_arb_multitexture_ok=0;//(strstr(gl_extensions,"GL_ARB_multitexture")!=0 && glActiveTextureARB!=0 && 0);
197 mprintf((0,"c:%p d:%p e:%p\n",strstr(gl_extensions,"GL_ARB_multitexture"),glActiveTextureARB,glBegin));
199 #ifdef GL_SGIS_multitexture
200 ogl_sgis_multitexture_ok=0;//(strstr(gl_extensions,"GL_SGIS_multitexture")!=0 && glSelectTextureSGIS!=0 && 0);
201 mprintf((0,"a:%p b:%p\n",strstr(gl_extensions,"GL_SGIS_multitexture"),glSelectTextureSGIS));
204 //add driver specific hacks here. whee.
205 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){
206 ogl_intensity4_ok=0;//ignores alpha, always black background instead of transparent.
207 ogl_readpixels_ok=0;//either just returns all black, or kills the X server entirely
208 ogl_gettexlevelparam_ok=0;//returns random data..
210 if (stricmp(gl_vendor,"Matrox Graphics Inc.")==0){
211 //displays garbage. reported by
212 // redomen@crcwnet.com (render="Matrox G400" version="1.1.3 5.52.015")
213 // orulz (Matrox G200)
217 //allow overriding of stuff.
218 #ifdef GL_ARB_multitexture
219 if ((t=FindArg("-gl_arb_multitexture_ok"))){
220 ogl_arb_multitexture_ok=atoi(Args[t+1]);
223 #ifdef GL_SGIS_multitexture
224 if ((t=FindArg("-gl_sgis_multitexture_ok"))){
225 ogl_sgis_multitexture_ok=atoi(Args[t+1]);
228 if ((t=FindArg("-gl_intensity4_ok"))){
229 ogl_intensity4_ok=atoi(Args[t+1]);
231 if ((t=FindArg("-gl_luminance4_alpha4_ok"))){
232 ogl_luminance4_alpha4_ok=atoi(Args[t+1]);
234 if ((t=FindArg("-gl_rgba2_ok"))){
235 ogl_rgba2_ok=atoi(Args[t+1]);
237 if ((t=FindArg("-gl_readpixels_ok"))){
238 ogl_readpixels_ok=atoi(Args[t+1]);
240 if ((t=FindArg("-gl_gettexlevelparam_ok"))){
241 ogl_gettexlevelparam_ok=atoi(Args[t+1]);
244 printf("gl_arb_multitexture:%i gl_sgis_multitexture:%i\n",ogl_arb_multitexture_ok,ogl_sgis_multitexture_ok);
245 printf("gl_intensity4:%i gl_luminance4_alpha4:%i gl_rgba2:%i gl_readpixels:%i gl_gettexlevelparam:%i\n",ogl_intensity4_ok,ogl_luminance4_alpha4_ok,ogl_rgba2_ok,ogl_readpixels_ok,ogl_gettexlevelparam_ok);
248 int gr_set_mode(u_int32_t mode)
263 //if (screen != NULL) gr_palette_clear();
267 gr_bm_data=grd_curscreen->sc_canvas.cv_bitmap.bm_data;//since we use realloc, we want to keep this pointer around.
268 memset( grd_curscreen, 0, sizeof(grs_screen));
269 grd_curscreen->sc_mode = mode;
270 grd_curscreen->sc_w = w;
271 grd_curscreen->sc_h = h;
272 grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*3,grd_curscreen->sc_h*4);
273 grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
274 grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
275 grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
276 grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
277 //grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
278 grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = w;
279 grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_OGL;
280 //grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
281 // mprintf((0,"ogl/gr.c: reallocing %p to %i\n",grd_curscreen->sc_canvas.cv_bitmap.bm_data,w*h));
282 grd_curscreen->sc_canvas.cv_bitmap.bm_data = d_realloc(gr_bm_data,w*h);
283 gr_set_current_canvas(NULL);
284 //gr_enable_default_palette_loading();
286 ogl_init_window(w,h);//platform specific code
290 OGL_VIEWPORT(0,0,w,h);
292 ogl_set_screen_mode();
294 // gamefont_choose_game_font(w,h);
299 #define GLstrcmptestr(a,b) if (stricmp(a,#b)==0 || stricmp(a,"GL_" #b)==0)return GL_ ## b;
300 int ogl_atotexfilti(char *a,int min){
301 GLstrcmptestr(a,NEAREST);
302 GLstrcmptestr(a,LINEAR);
303 if (min){//mipmaps are valid only for the min filter
304 GLstrcmptestr(a,NEAREST_MIPMAP_NEAREST);
305 GLstrcmptestr(a,NEAREST_MIPMAP_LINEAR);
306 GLstrcmptestr(a,LINEAR_MIPMAP_NEAREST);
307 GLstrcmptestr(a,LINEAR_MIPMAP_LINEAR);
309 Error("unknown/invalid texture filter %s\n",a);
310 // return GL_NEAREST;
312 int ogl_testneedmipmaps(int i){
317 case GL_NEAREST_MIPMAP_NEAREST:
318 case GL_NEAREST_MIPMAP_LINEAR:
319 case GL_LINEAR_MIPMAP_NEAREST:
320 case GL_LINEAR_MIPMAP_LINEAR:
323 Error("unknown texture filter %x\n",i);
326 #ifdef OGL_RUNTIME_LOAD
327 #if defined(__WINDOWS__) || defined(__MINGW32__)
328 char *OglLibPath="opengl32.dll";
331 char *OglLibPath="libGL.so";
335 int ogl_init_load_library(void)
340 if ((t=FindArg("-gl_library")))
341 OglLibPath=Args[t+1];
343 retcode = OpenGL_LoadLibrary(true);
346 mprintf((0,"Opengl loaded ok\n"));
350 Error("Opengl: Functions not imported\n");
353 Error("Opengl: error loading %s\n",OglLibPath);
363 int mode = SM(640,480);
365 // Only do this function once!
370 #ifdef OGL_RUNTIME_LOAD
371 ogl_init_load_library();
374 #ifdef GR_SUPPORTS_FULLSCREEN_TOGGLE
375 if (FindArg("-gl_voodoo")){
377 gr_toggle_fullscreen();
379 if (FindArg("-fullscreen"))
380 gr_toggle_fullscreen();
382 if ((glt=FindArg("-gl_alttexmerge")))
384 if ((t=FindArg("-gl_stdtexmerge")))
385 if (t>=glt)//allow overriding of earlier args
388 if ((glt=FindArg("-gl_16bittextures")))
389 ogl_rgba_format=GL_RGB5_A1;
391 if ((glt=FindArg("-gl_mipmap"))){
392 GL_texmagfilt=GL_LINEAR;
393 GL_texminfilt=GL_LINEAR_MIPMAP_NEAREST;
395 if ((t=FindArg("-gl_simple"))){
396 if (t>=glt){//allow overriding of earlier args
398 GL_texmagfilt=GL_NEAREST;
399 GL_texminfilt=GL_NEAREST;
402 if ((t=FindArg("-gl_texmagfilt")) || (t=FindArg("-gl_texmagfilter"))){
403 if (t>=glt)//allow overriding of earlier args
404 GL_texmagfilt=ogl_atotexfilti(Args[t+1],0);
406 if ((t=FindArg("-gl_texminfilt")) || (t=FindArg("-gl_texminfilter"))){
407 if (t>=glt)//allow overriding of earlier args
408 GL_texminfilt=ogl_atotexfilti(Args[t+1],1);
410 GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
411 mprintf((0,"gr_init: texmagfilt:%x texminfilt:%x needmipmaps=%i\n",GL_texmagfilt,GL_texminfilt,GL_needmipmaps));
413 if ((t=FindArg("-gl_vidmem"))){
414 ogl_mem_target=atoi(Args[t+1])*1024*1024;
416 if ((t=FindArg("-gl_reticle"))){
417 gl_reticle=atoi(Args[t+1]);
419 //printf("ogl_mem_target=%i\n",ogl_mem_target);
421 ogl_init();//platform specific initialization
423 ogl_init_texture_list_internal();
425 MALLOC( grd_curscreen,grs_screen,1 );
426 memset( grd_curscreen, 0, sizeof(grs_screen));
427 grd_curscreen->sc_canvas.cv_bitmap.bm_data = NULL;
430 if ((retcode=gr_set_mode(mode)))
434 grd_curscreen->sc_canvas.cv_color = 0;
435 grd_curscreen->sc_canvas.cv_drawmode = 0;
436 grd_curscreen->sc_canvas.cv_font = NULL;
437 grd_curscreen->sc_canvas.cv_font_fg_color = 0;
438 grd_curscreen->sc_canvas.cv_font_bg_color = 0;
439 gr_set_current_canvas( &grd_curscreen->sc_canvas );
450 // mprintf((0,"ogl init: %s %s %s - %s\n",glGetString(GL_VENDOR),glGetString(GL_RENDERER),glGetString(GL_VERSION),glGetString,(GL_EXTENSIONS)));
452 ogl_close();//platform specific code
454 if (grd_curscreen->sc_canvas.cv_bitmap.bm_data)
455 d_free(grd_curscreen->sc_canvas.cv_bitmap.bm_data);
456 d_free(grd_curscreen);
458 #ifdef OGL_RUNTIME_LOAD
460 OpenGL_LoadLibrary(false);
463 extern int r_upixelc;
464 void ogl_upixelc(int x, int y, int c){
466 // printf("gr_upixelc(%i,%i,%i)%i\n",x,y,c,Function_mode==FMODE_GAME);
467 // if(Function_mode != FMODE_GAME){
468 // grd_curcanv->cv_bitmap.bm_data[y*grd_curscreen->sc_canvas.cv_bitmap.bm_w+x]=c;
470 OGL_DISABLE(TEXTURE_2D);
473 // glBegin(GL_LINES);
474 // ogl_pal=gr_current_pal;
475 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
476 // ogl_pal=gr_palette;
477 glVertex2f((x+grd_curcanv->cv_bitmap.bm_x)/(float)last_width,1.0-(y+grd_curcanv->cv_bitmap.bm_y)/(float)last_height);
478 // glVertex2f(x/((float)last_width+1),1.0-y/((float)last_height+1));
482 void ogl_urect(int left,int top,int right,int bot){
486 xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
487 xf=(right+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
488 yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
489 yf=1.0-(bot+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
491 OGL_DISABLE(TEXTURE_2D);
492 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
500 void ogl_ulinec(int left,int top,int right,int bot,int c){
503 xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
504 xf=(right+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
505 yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
506 yf=1.0-(bot+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
508 OGL_DISABLE(TEXTURE_2D);
509 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
517 GLfloat last_r=0, last_g=0, last_b=0;
519 void ogl_do_palfx(void){
521 OGL_DISABLE(TEXTURE_2D);
522 if (gr_palette_faded_out){
523 /* glEnable(GL_BLEND);
524 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/
529 //glBlendFunc(GL_SRC_COLOR, GL_DST_COLOR);
531 glBlendFunc(GL_ONE,GL_ONE);
532 glColor3f(last_r,last_g,last_b);
533 // r=f2fl(last_r);g=f2fl(last_g);b=f2fl(last_b);a=0.5;
547 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
550 void gr_palette_clear()
552 gr_palette_faded_out=1;
556 void gr_palette_step_up( int r, int g, int b )
558 if (gr_palette_faded_out) return;
560 // if ( (r==last_r) && (g==last_g) && (b==last_b) ) return;
565 do_pal_step=(r || g || b);*/
567 last_r = (r+gr_palette_gamma)/63.0;
568 last_g = (g+gr_palette_gamma)/63.0;
569 last_b = (b+gr_palette_gamma)/63.0;
571 do_pal_step=(r || g || b || gr_palette_gamma);
575 //added on 980913 by adb to fix palette problems
576 // need a min without side effects...
578 static inline int min(int x, int y) { return x < y ? x : y; }
581 void gr_palette_load( ubyte *pal )
585 for (i=0; i<768; i++ ) {
586 gr_current_pal[i] = pal[i];
587 if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
589 //palette = screen->format->palette;
591 gr_palette_faded_out=0;
593 init_computed_colors();
598 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
600 gr_palette_faded_out=1;
606 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
608 gr_palette_faded_out=0;
614 void gr_palette_read(ubyte * pal)
617 for (i=0; i<768; i++ ) {
618 pal[i]=gr_current_pal[i];
619 if (pal[i] > 63) pal[i] = 63;
623 //writes out an uncompressed RGB .tga file
624 //if we got really spiffy, we could optionally link in libpng or something, and use that.
625 void write_bmp(char *savename,int w,int h,unsigned char *buf){
627 #if defined(__WINDOWS__) || defined(__MINGW32__)
628 f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IRUSR|S_IWUSR);
630 f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
633 GLubyte targaMagic[12] = { 0, //no identification field
635 2,//RGB image (well, BGR, actually)
636 0, 0, 0, 0, 0, 0, 0, 0, 0 };//no colormap or image origin stuff.
643 write (f,targaMagic,sizeof(targaMagic));
644 blah=w%256;write (f,&blah,1);//w, low
645 blah=w/256;write (f,&blah,1);//w, high
646 blah=h%256;write (f,&blah,1);//h, low
647 blah=h/256;write (f,&blah,1);//h, high
648 blah=24;write (f,&blah,1);//24 bpp
649 blah=0;write (f,&blah,1);//no attribute bits, origin is lowerleft, no interleave
652 for (y=0;y<h;y++){//TGAs use BGR ordering of data.
664 mprintf((0,"screenshot error, couldn't write to %s (err %i)\n",savename,errno));
671 mprintf((0,"screenshot error, couldn't open %s (err %i)\n",savename,errno));
674 void save_screen_shot(int automap_flag)
678 static int savenum=0;
682 if (!ogl_readpixels_ok){
684 hud_message(MSGC_GAME_FEEDBACK,"glReadPixels not supported on your configuration");
690 //added/changed on 10/31/98 by Victor Rachels to fix overwrite each new game
691 if ( savenum == 9999 ) savenum = 0;
692 sprintf(savename,"scrn%04d.tga",savenum++);
694 while(!access(savename,0))
696 if ( savenum == 9999 ) savenum = 0;
697 sprintf(savename,"scrn%04d.tga",savenum++);
699 sprintf( message, "%s '%s'", TXT_DUMPING_SCREEN, savename );
700 //end this section addition/change - Victor Rachels
703 // save_font = grd_curcanv->cv_font;
704 // gr_set_curfont(GAME_FONT);
705 // gr_set_fontcolor(gr_find_closest_color_current(0,31,0),-1);
706 // gr_get_string_size(message,&w,&h,&aw);
707 // modex_print_message(32, 2, message);
709 hud_message(MSGC_GAME_FEEDBACK,message);
712 buf = d_malloc(grd_curscreen->sc_w*grd_curscreen->sc_h*3);
713 glReadBuffer(GL_FRONT);
714 glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
715 write_bmp(savename,grd_curscreen->sc_w,grd_curscreen->sc_h,buf);