1 /* $Id: gr.c,v 1.30 2004-05-22 21:55:29 btb Exp $ */
4 * OGL video functions. - Added 9/15/99 Matthew Mueller
20 #if defined(__APPLE__) && defined(__MACH__)
21 //#include <OpenGL/gl.h>
28 #include <sys/types.h>
53 #if defined(__APPLE__) && defined(__MACH__)
54 #include <OpenGL/glu.h>
55 #undef GL_ARB_multitexture // hack!
65 void gr_palette_clear(); // Function prototype for gr_init;
71 int gr_check_fullscreen(void){
72 return ogl_fullscreen;
75 void gr_do_fullscreen(int f){
77 ogl_fullscreen=1;//force fullscreen mode on voodoos.
81 ogl_do_fullscreen_internal();
85 int gr_toggle_fullscreen(void){
86 gr_do_fullscreen(!ogl_fullscreen);
87 // grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
88 return ogl_fullscreen;
91 int arch_toggle_fullscreen_menu(void){
92 unsigned char *buf=NULL;
94 if (ogl_readpixels_ok){
95 MALLOC(buf,unsigned char,grd_curscreen->sc_w*grd_curscreen->sc_h*3);
96 glReadBuffer(GL_FRONT);
97 glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
100 gr_do_fullscreen(!ogl_fullscreen);
102 if (ogl_readpixels_ok){
103 // glWritePixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
105 glDrawPixels(grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
108 // grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
110 return ogl_fullscreen;
113 void ogl_init_state(void){
114 /* select clearing (background) color */
115 glClearColor(0.0, 0.0, 0.0, 0.0);
116 glShadeModel(GL_SMOOTH);
118 /* initialize viewing values */
119 glMatrixMode(GL_PROJECTION);
121 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
122 glScalef(1.0, -1.0, 1.0);
123 glTranslatef(0.0, -1.0, 0.0);
124 gr_palette_step_up(0,0,0);//in case its left over from in game
127 int last_screen_mode=-1;
129 void ogl_set_screen_mode(void){
130 if (last_screen_mode==Screen_mode)
132 OGL_VIEWPORT(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h);
133 // 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);
134 if (Screen_mode==SCREEN_GAME){
135 glDrawBuffer(GL_BACK);
137 glClearColor(0.0, 0.0, 0.0, 0.0);
138 glDrawBuffer(GL_FRONT);
139 glClear(GL_COLOR_BUFFER_BIT);
140 glMatrixMode(GL_PROJECTION);
141 glLoadIdentity();//clear matrix
142 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
143 glMatrixMode(GL_MODELVIEW);
144 glLoadIdentity();//clear matrix
146 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
148 last_screen_mode=Screen_mode;
155 if(Screen_mode != SCREEN_GAME){
161 const char *gl_vendor,*gl_renderer,*gl_version,*gl_extensions;
163 void ogl_get_verinfo(void)
165 int t, arb_max_textures = -1, sgi_max_textures = -1, nv_register_combiners = -1;
166 float anisotropic_max = 0;
168 gl_vendor=glGetString(GL_VENDOR);
169 gl_renderer=glGetString(GL_RENDERER);
170 gl_version=glGetString(GL_VERSION);
171 gl_extensions=glGetString(GL_EXTENSIONS);
173 con_printf(CON_VERBOSE, "gl vendor:%s renderer:%s version:%s extensions:%s\n",gl_vendor,gl_renderer,gl_version,gl_extensions);
175 ogl_intensity4_ok = 1;
176 ogl_luminance4_alpha4_ok = 1;
178 ogl_gettexlevelparam_ok = 1;
179 ogl_setgammaramp_ok = 1;
182 dglMultiTexCoord2fARB = (glMultiTexCoord2fARB_fp)wglGetProcAddress("glMultiTexCoord2fARB");
183 dglActiveTextureARB = (glActiveTextureARB_fp)wglGetProcAddress("glActiveTextureARB");
184 dglMultiTexCoord2fSGIS = (glMultiTexCoord2fSGIS_fp)wglGetProcAddress("glMultiTexCoord2fSGIS");
185 dglSelectTextureSGIS = (glSelectTextureSGIS_fp)wglGetProcAddress("glSelectTextureSGIS");
186 dglColorTableEXT = (glColorTableEXT_fp)wglGetProcAddress("glColorTableEXT");
187 dglCombinerParameteriNV = (glCombinerParameteriNV_fp)wglGetProcAddress("glCombinerParameteriNV");
188 dglCombinerInputNV = (glCombinerInputNV_fp)wglGetProcAddress("glCombinerInputNV");
189 dglCombinerOutputNV = (glCombinerOutputNV_fp)wglGetProcAddress("glCombinerOutputNV");
190 dglFinalCombinerInputNV = (glFinalCombinerInputNV_fp)wglGetProcAddress("glFinalCombinerInputNV");
193 #ifdef GL_ARB_multitexture
194 ogl_arb_multitexture_ok = (strstr(gl_extensions, "GL_ARB_multitexture") != 0 && glActiveTextureARB != 0);
195 mprintf((0,"c:%p d:%p e:%p\n",strstr(gl_extensions,"GL_ARB_multitexture"),glActiveTextureARB,glBegin));
197 #ifdef GL_SGIS_multitexture
198 ogl_sgis_multitexture_ok = (strstr(gl_extensions, "GL_SGIS_multitexture") != 0 && glSelectTextureSGIS != 0);
199 mprintf((0,"a:%p b:%p\n",strstr(gl_extensions,"GL_SGIS_multitexture"),glSelectTextureSGIS));
201 ogl_nv_texture_env_combine4_ok = (strstr(gl_extensions, "GL_NV_texture_env_combine4") != 0);
202 #ifdef GL_NV_register_combiners
203 ogl_nv_register_combiners_ok=(strstr(gl_extensions,"GL_NV_register_combiners")!=0 && glCombinerOutputNV!=0);
206 ogl_ext_texture_filter_anisotropic_ok = (strstr(gl_extensions, "GL_EXT_texture_filter_anisotropic") != 0);
207 if (ogl_ext_texture_filter_anisotropic_ok)
208 glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &anisotropic_max);
210 #ifdef GL_EXT_paletted_texture
211 ogl_paletted_texture_ok = (strstr(gl_extensions, "GL_EXT_paletted_texture") != 0 && glColorTableEXT != 0);
212 ogl_shared_palette_ok = (strstr(gl_extensions, "GL_EXT_shared_texture_palette") != 0 && ogl_paletted_texture_ok);
214 //add driver specific hacks here. whee.
215 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){
216 ogl_intensity4_ok=0;//ignores alpha, always black background instead of transparent.
217 ogl_readpixels_ok=0;//either just returns all black, or kills the X server entirely
218 ogl_gettexlevelparam_ok=0;//returns random data..
220 if (stricmp(gl_vendor,"Matrox Graphics Inc.")==0){
221 //displays garbage. reported by
222 // redomen@crcwnet.com (render="Matrox G400" version="1.1.3 5.52.015")
223 // orulz (Matrox G200)
227 //allow overriding of stuff.
228 #ifdef GL_ARB_multitexture
229 if ((t=FindArg("-gl_arb_multitexture_ok"))){
230 ogl_arb_multitexture_ok=atoi(Args[t+1]);
232 if (ogl_arb_multitexture_ok)
233 glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &arb_max_textures);
235 #ifdef GL_SGIS_multitexture
236 if ((t=FindArg("-gl_sgis_multitexture_ok"))){
237 ogl_sgis_multitexture_ok=atoi(Args[t+1]);
239 if (ogl_sgis_multitexture_ok)
240 glGetIntegerv(GL_MAX_TEXTURES_SGIS, &sgi_max_textures);
242 #ifdef GL_NV_register_combiners
243 if ((t = FindArg("-gl_nv_register_combiners_ok")))
245 ogl_nv_register_combiners_ok=atoi(Args[t + 1]);
247 if (ogl_nv_register_combiners_ok)
248 glGetIntegerv(GL_MAX_GENERAL_COMBINERS_NV, &nv_register_combiners);
250 #ifdef GL_EXT_paletted_texture
251 if ((t = FindArg("-gl_paletted_texture_ok")))
253 ogl_paletted_texture_ok = atoi(Args[t + 1]);
255 if ((t = FindArg("-gl_shared_palette_ok")))
257 ogl_shared_palette_ok = atoi(Args[t + 1]);
259 ogl_shared_palette_ok = ogl_shared_palette_ok && ogl_paletted_texture_ok; // shared palettes require palette support in the first place, obviously ;)
260 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);
262 if ((t=FindArg("-gl_intensity4_ok"))){
263 ogl_intensity4_ok=atoi(Args[t+1]);
265 if ((t=FindArg("-gl_luminance4_alpha4_ok"))){
266 ogl_luminance4_alpha4_ok=atoi(Args[t+1]);
268 if ((t=FindArg("-gl_rgba2_ok"))){
269 ogl_rgba2_ok=atoi(Args[t+1]);
271 if ((t=FindArg("-gl_readpixels_ok"))){
272 ogl_readpixels_ok=atoi(Args[t+1]);
274 if ((t=FindArg("-gl_gettexlevelparam_ok"))){
275 ogl_gettexlevelparam_ok=atoi(Args[t+1]);
277 if ((t=FindArg("-gl_setgammaramp_ok")))
279 ogl_setgammaramp_ok = atoi(Args[t + 1]);
282 con_printf(CON_VERBOSE, "gl_arb_multitexture:%i(%i units) gl_sgis_multitexture:%i(%i units) gl_nv_texture_env_combine4:%i gl_nv_register_combiners:%i(%i stages)\n", ogl_arb_multitexture_ok, arb_max_textures, ogl_sgis_multitexture_ok, sgi_max_textures, ogl_nv_texture_env_combine4_ok, 0/*ogl_nv_register_combiners_ok*/, nv_register_combiners);
283 con_printf(CON_VERBOSE, "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);
287 int gr_check_mode(u_int32_t mode)
293 return ogl_check_mode(w, h); // platform specific code
297 extern int VGA_current_mode; // DPH: kludge - remove at all costs
299 int gr_set_mode(u_int32_t mode)
313 VGA_current_mode = mode;
315 //if (screen != NULL) gr_palette_clear();
319 gr_bm_data=grd_curscreen->sc_canvas.cv_bitmap.bm_data;//since we use realloc, we want to keep this pointer around.
320 memset( grd_curscreen, 0, sizeof(grs_screen));
321 grd_curscreen->sc_mode = mode;
322 grd_curscreen->sc_w = w;
323 grd_curscreen->sc_h = h;
324 grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*3,grd_curscreen->sc_h*4);
325 grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
326 grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
327 grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
328 grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
329 //grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
330 grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = w;
331 grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_OGL;
332 //grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
333 // mprintf((0,"ogl/gr.c: reallocing %p to %i\n",grd_curscreen->sc_canvas.cv_bitmap.bm_data,w*h));
334 grd_curscreen->sc_canvas.cv_bitmap.bm_data = d_realloc(gr_bm_data,w*h);
335 gr_set_current_canvas(NULL);
336 //gr_enable_default_palette_loading();
338 ogl_init_window(w,h);//platform specific code
342 OGL_VIEWPORT(0,0,w,h);
344 ogl_set_screen_mode();
346 // gamefont_choose_game_font(w,h);
351 #define GLstrcmptestr(a,b) if (stricmp(a,#b)==0 || stricmp(a,"GL_" #b)==0)return GL_ ## b;
352 int ogl_atotexfilti(char *a,int min){
353 GLstrcmptestr(a,NEAREST);
354 GLstrcmptestr(a,LINEAR);
355 if (min){//mipmaps are valid only for the min filter
356 GLstrcmptestr(a,NEAREST_MIPMAP_NEAREST);
357 GLstrcmptestr(a,NEAREST_MIPMAP_LINEAR);
358 GLstrcmptestr(a,LINEAR_MIPMAP_NEAREST);
359 GLstrcmptestr(a,LINEAR_MIPMAP_LINEAR);
361 Error("unknown/invalid texture filter %s\n",a);
362 // return GL_NEAREST;
364 int ogl_testneedmipmaps(int i){
369 case GL_NEAREST_MIPMAP_NEAREST:
370 case GL_NEAREST_MIPMAP_LINEAR:
371 case GL_LINEAR_MIPMAP_NEAREST:
372 case GL_LINEAR_MIPMAP_LINEAR:
375 Error("unknown texture filter %x\n",i);
378 #ifdef OGL_RUNTIME_LOAD
380 char *OglLibPath="opengl32.dll";
383 char *OglLibPath="libGL.so";
387 int ogl_init_load_library(void)
392 if ((t=FindArg("-gl_library")))
393 OglLibPath=Args[t+1];
395 retcode = OpenGL_LoadLibrary(true);
398 mprintf((0,"Opengl loaded ok\n"));
402 Error("Opengl: Functions not imported\n");
405 Error("Opengl: error loading %s\n",OglLibPath);
415 int mode = SM(640,480);
416 int retcode, t, glt = 0;
418 // Only do this function once!
423 #ifdef OGL_RUNTIME_LOAD
424 ogl_init_load_library();
427 #ifdef GR_SUPPORTS_FULLSCREEN_TOGGLE
428 if (FindArg("-gl_voodoo")){
430 gr_toggle_fullscreen();
432 if (FindArg("-fullscreen"))
433 gr_toggle_fullscreen();
435 if ((glt=FindArg("-gl_alttexmerge")))
437 if ((t=FindArg("-gl_stdtexmerge")))
438 if (t>=glt)//allow overriding of earlier args
441 if ((glt = FindArg("-gl_16bittextures")))
443 ogl_rgba_internalformat = GL_RGB5_A1;
444 ogl_rgb_internalformat = GL_RGB5;
447 if ((glt=FindArg("-gl_mipmap"))){
448 GL_texmagfilt=GL_LINEAR;
449 GL_texminfilt=GL_LINEAR_MIPMAP_NEAREST;
451 if ((glt=FindArg("-gl_trilinear")))
453 GL_texmagfilt = GL_LINEAR;
454 GL_texminfilt = GL_LINEAR_MIPMAP_LINEAR;
456 if ((t=FindArg("-gl_simple"))){
457 if (t>=glt){//allow overriding of earlier args
459 GL_texmagfilt=GL_NEAREST;
460 GL_texminfilt=GL_NEAREST;
463 if ((t=FindArg("-gl_texmagfilt")) || (t=FindArg("-gl_texmagfilter"))){
464 if (t>=glt)//allow overriding of earlier args
465 GL_texmagfilt=ogl_atotexfilti(Args[t+1],0);
467 if ((t=FindArg("-gl_texminfilt")) || (t=FindArg("-gl_texminfilter"))){
468 if (t>=glt)//allow overriding of earlier args
469 GL_texminfilt=ogl_atotexfilti(Args[t+1],1);
471 GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
473 if ((t = FindArg("-gl_anisotropy")) || (t = FindArg("-gl_anisotropic")))
475 GL_texanisofilt=atof(Args[t + 1]);
478 mprintf((0,"gr_init: texmagfilt:%x texminfilt:%x needmipmaps=%i anisotropic:%f\n",GL_texmagfilt,GL_texminfilt,GL_needmipmaps,GL_texanisofilt));
481 if ((t=FindArg("-gl_vidmem"))){
482 ogl_mem_target=atoi(Args[t+1])*1024*1024;
484 if ((t=FindArg("-gl_reticle"))){
485 gl_reticle=atoi(Args[t+1]);
487 //printf("ogl_mem_target=%i\n",ogl_mem_target);
489 ogl_init();//platform specific initialization
491 ogl_init_texture_list_internal();
493 MALLOC( grd_curscreen,grs_screen,1 );
494 memset( grd_curscreen, 0, sizeof(grs_screen));
495 grd_curscreen->sc_canvas.cv_bitmap.bm_data = NULL;
498 if ((retcode=gr_set_mode(mode)))
503 grd_curscreen->sc_canvas.cv_color = 0;
504 grd_curscreen->sc_canvas.cv_drawmode = 0;
505 grd_curscreen->sc_canvas.cv_font = NULL;
506 grd_curscreen->sc_canvas.cv_font_fg_color = 0;
507 grd_curscreen->sc_canvas.cv_font_bg_color = 0;
508 gr_set_current_canvas( &grd_curscreen->sc_canvas );
519 // mprintf((0,"ogl init: %s %s %s - %s\n",glGetString(GL_VENDOR),glGetString(GL_RENDERER),glGetString(GL_VERSION),glGetString,(GL_EXTENSIONS)));
521 ogl_close();//platform specific code
523 if (grd_curscreen->sc_canvas.cv_bitmap.bm_data)
524 d_free(grd_curscreen->sc_canvas.cv_bitmap.bm_data);
525 d_free(grd_curscreen);
527 #ifdef OGL_RUNTIME_LOAD
529 OpenGL_LoadLibrary(false);
532 extern int r_upixelc;
533 void ogl_upixelc(int x, int y, int c){
535 // printf("gr_upixelc(%i,%i,%i)%i\n",x,y,c,Function_mode==FMODE_GAME);
536 // if(Function_mode != FMODE_GAME){
537 // grd_curcanv->cv_bitmap.bm_data[y*grd_curscreen->sc_canvas.cv_bitmap.bm_w+x]=c;
539 OGL_DISABLE(TEXTURE_2D);
542 // glBegin(GL_LINES);
543 // ogl_pal=gr_current_pal;
544 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
545 // ogl_pal=gr_palette;
546 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);
547 // glVertex2f(x/((float)last_width+1),1.0-y/((float)last_height+1));
551 void ogl_urect(int left,int top,int right,int bot){
555 xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
556 xf = (right + 1 + grd_curcanv->cv_bitmap.bm_x) / (float)last_width;
557 yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
558 yf = 1.0 - (bot + 1 + grd_curcanv->cv_bitmap.bm_y) / (float)last_height;
560 OGL_DISABLE(TEXTURE_2D);
561 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
569 void ogl_ulinec(int left,int top,int right,int bot,int c){
572 xo = (left + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
573 xf = (right + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
574 yo = 1.0 - (top + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
575 yf = 1.0 - (bot + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
577 OGL_DISABLE(TEXTURE_2D);
578 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
586 GLfloat last_r=0, last_g=0, last_b=0;
588 void ogl_do_palfx(void){
590 OGL_DISABLE(TEXTURE_2D);
591 if (gr_palette_faded_out){
592 /* glEnable(GL_BLEND);
593 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/
598 //glBlendFunc(GL_SRC_COLOR, GL_DST_COLOR);
600 glBlendFunc(GL_ONE,GL_ONE);
601 glColor3f(last_r,last_g,last_b);
602 // r=f2fl(last_r);g=f2fl(last_g);b=f2fl(last_b);a=0.5;
616 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
619 void gr_palette_clear()
621 gr_palette_faded_out=1;
625 int ogl_brightness_ok = 0;
626 int ogl_setgammaramp_ok = 1;
627 int ogl_brightness_r = 0, ogl_brightness_g = 0, ogl_brightness_b = 0;
628 static int old_b_r = 0, old_b_g = 0, old_b_b = 0;
630 void gr_palette_step_up(int r, int g, int b)
632 if (gr_palette_faded_out)
635 old_b_r = ogl_brightness_r;
636 old_b_g = ogl_brightness_g;
637 old_b_b = ogl_brightness_b;
639 ogl_brightness_r = max(r + gr_palette_gamma, 0);
640 ogl_brightness_g = max(g + gr_palette_gamma, 0);
641 ogl_brightness_b = max(b + gr_palette_gamma, 0);
643 if (ogl_setgammaramp_ok &&
644 (old_b_r != ogl_brightness_r ||
645 old_b_g != ogl_brightness_g ||
646 old_b_b != ogl_brightness_b))
647 ogl_brightness_ok = !ogl_setbrightness_internal();
649 if (!ogl_setgammaramp_ok || !ogl_brightness_ok)
651 last_r = ogl_brightness_r / 63.0;
652 last_g = ogl_brightness_g / 63.0;
653 last_b = ogl_brightness_b / 63.0;
655 do_pal_step = (r || g || b || gr_palette_gamma);
663 //added on 980913 by adb to fix palette problems
664 // need a min without side effects...
666 static inline int min(int x, int y) { return x < y ? x : y; }
669 void gr_palette_load( ubyte *pal )
673 for (i=0; i<768; i++ ) {
674 gr_current_pal[i] = pal[i];
675 if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
677 //palette = screen->format->palette;
679 gr_palette_faded_out=0;
681 gr_palette_step_up(0, 0, 0); // make ogl_setbrightness_internal get run so that menus get brightened too.
683 init_computed_colors();
685 ogl_init_shared_palette();
690 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
692 gr_palette_faded_out=1;
698 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
700 gr_palette_faded_out=0;
706 void gr_palette_read(ubyte * pal)
709 for (i=0; i<768; i++ ) {
710 pal[i]=gr_current_pal[i];
711 if (pal[i] > 63) pal[i] = 63;
715 //writes out an uncompressed RGB .tga file
716 //if we got really spiffy, we could optionally link in libpng or something, and use that.
717 void write_bmp(char *savename,int w,int h,unsigned char *buf){
720 f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IREAD|S_IWRITE);
722 f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
725 GLubyte targaMagic[12] = { 0, //no identification field
727 2,//RGB image (well, BGR, actually)
728 0, 0, 0, 0, 0, 0, 0, 0, 0 };//no colormap or image origin stuff.
735 write (f,targaMagic,sizeof(targaMagic));
736 blah=w%256;write (f,&blah,1);//w, low
737 blah=w/256;write (f,&blah,1);//w, high
738 blah=h%256;write (f,&blah,1);//h, low
739 blah=h/256;write (f,&blah,1);//h, high
740 blah=24;write (f,&blah,1);//24 bpp
741 blah=0;write (f,&blah,1);//no attribute bits, origin is lowerleft, no interleave
744 for (y=0;y<h;y++){//TGAs use BGR ordering of data.
757 mprintf((0,"screenshot error, couldn't write to %s (err %i)\n",savename,errno));
764 mprintf((0,"screenshot error, couldn't open %s (err %i)\n",savename,errno));
767 void save_screen_shot(int automap_flag)
771 static int savenum=0;
775 if (!ogl_readpixels_ok){
777 hud_message(MSGC_GAME_FEEDBACK,"glReadPixels not supported on your configuration");
783 //added/changed on 10/31/98 by Victor Rachels to fix overwrite each new game
784 if ( savenum == 9999 ) savenum = 0;
785 sprintf(savename,"scrn%04d.tga",savenum++);
787 while(!access(savename,0))
789 if ( savenum == 9999 ) savenum = 0;
790 sprintf(savename,"scrn%04d.tga",savenum++);
792 sprintf( message, "%s '%s'", TXT_DUMPING_SCREEN, savename );
793 //end this section addition/change - Victor Rachels
796 // save_font = grd_curcanv->cv_font;
797 // gr_set_curfont(GAME_FONT);
798 // gr_set_fontcolor(gr_find_closest_color_current(0,31,0),-1);
799 // gr_get_string_size(message,&w,&h,&aw);
800 // modex_print_message(32, 2, message);
802 hud_message(MSGC_GAME_FEEDBACK,message);
805 buf = d_malloc(grd_curscreen->sc_w*grd_curscreen->sc_h*3);
806 glReadBuffer(GL_FRONT);
807 glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
808 write_bmp(savename,grd_curscreen->sc_w,grd_curscreen->sc_h,buf);