Line data Source code
1 : /**
2 : * @brief screen rendering functionality
3 : *
4 : * screen rendering functions, such as background, progress bar
5 : * also handles stuff such as main menu rendering and other non-intensive rendering
6 : * as well as global rendering settings such as gamma
7 : */
8 : #include "SDL_ttf.h"
9 :
10 : #include "../libprimis-headers/cube.h"
11 : #include "../../shared/geomexts.h"
12 : #include "../../shared/glemu.h"
13 : #include "../../shared/glexts.h"
14 :
15 : #include "hud.h"
16 : #include "octarender.h"
17 : #include "rendergl.h"
18 : #include "renderlights.h"
19 : #include "rendermodel.h"
20 : #include "renderparticles.h"
21 : #include "rendertext.h"
22 : #include "renderttf.h"
23 : #include "renderva.h"
24 : #include "renderwindow.h"
25 : #include "shader.h"
26 : #include "shaderparam.h"
27 : #include "stain.h"
28 : #include "texture.h"
29 :
30 : #include "interface/console.h"
31 : #include "interface/control.h"
32 : #include "interface/input.h"
33 : #include "interface/menus.h"
34 :
35 : #include "world/octaedit.h"
36 :
37 0 : VARFN(screenw, scr_w, SCR_MINW, -1, SCR_MAXW, initwarning("screen resolution"));
38 0 : VARFN(screenh, scr_h, SCR_MINH, -1, SCR_MAXH, initwarning("screen resolution"));
39 :
40 : static VAR(menufps, 0, 60, 1000); //maximum framerate while in main menu
41 : static VARP(maxfps, 0, 240, 1000); //maximum framerate while world is being rendered
42 :
43 : VAR(desktopw, 1, 0, 0); //used in iengine.h
44 : VAR(desktoph, 1, 0, 0); //used in iengine.h
45 :
46 : int screenw = 0,
47 : screenh = 0;
48 :
49 : SDL_Window *screen = nullptr;
50 : static SDL_GLContext glcontext = nullptr;
51 :
52 : bool inbetweenframes = false, //used in iengine.h
53 : renderedframe = true; //used in iengine.h, set to true by main() call in game and false by setbackgroundinfo(), so true during most circumstances
54 :
55 : /**
56 : * @brief helper function for main menu rendering routines
57 : *
58 : * @return w and h if both are above 1024x768
59 : * @return w and h multiplied by the factor by which the smallest dimension is smaller than 1024x768
60 : */
61 0 : static void getbackgroundres(int &w, int &h)
62 : {
63 0 : float wk = 1,
64 0 : hk = 1;
65 0 : if(w < 1024)
66 : {
67 0 : wk = 1024.0f/w; //calculate w subsize factor (if greater than 1)
68 : }
69 0 : if(h < 768)
70 : {
71 0 : hk = 768.0f/h; //calculate h subsize factor (if greater than 1)
72 : }
73 0 : wk = hk = std::max(wk, hk); //pick the largest factor and multiply both by this
74 0 : w = static_cast<int>(std::ceil(w*wk));
75 0 : h = static_cast<int>(std::ceil(h*hk));
76 0 : }
77 :
78 : static std::string backgroundcaption = "",
79 : backgroundmapname = "",
80 : backgroundmapinfo = "";
81 : static const Texture *backgroundmapshot = nullptr;
82 :
83 0 : static void bgquad(float x, float y, float w, float h, float tx = 0, float ty = 0, float tw = 1, float th = 1)
84 : {
85 0 : gle::begin(GL_TRIANGLE_STRIP);
86 0 : gle::attribf(x, y); gle::attribf(tx, ty);
87 0 : gle::attribf(x+w, y); gle::attribf(tx + tw, ty);
88 0 : gle::attribf(x, y+h); gle::attribf(tx, ty + th);
89 0 : gle::attribf(x+w, y+h); gle::attribf(tx + tw, ty + th);
90 0 : gle::end();
91 0 : }
92 :
93 : // void renderbackgroundview(int, int, const char*, Texture*, const char*, const char*)
94 : // Background picture / text handler
95 :
96 : /*
97 : Notes:
98 : * Unsure what 'w' and 'h' refers to, maybe screen resolution?
99 : */
100 :
101 0 : static void renderbackgroundview(int win_w, int win_h, const char *caption, const Texture *mapshot, const char *mapname, const char *mapinfo)
102 : {
103 : static int lastupdate = -1,
104 : lastw = -1,
105 : lasth = -1;
106 : static float backgroundu = 0,
107 : backgroundv = 0;
108 0 : const bool needsRefresh =
109 0 : (renderedframe && !mainmenu && lastupdate != lastmillis)
110 0 : || lastw != win_w
111 0 : || lasth != win_h;
112 0 : if(needsRefresh)
113 : {
114 0 : lastupdate = lastmillis;
115 0 : lastw = win_w;
116 0 : lasth = win_h;
117 :
118 0 : backgroundu = randomfloat(1);
119 0 : backgroundv = randomfloat(1);
120 : }
121 0 : else if(lastupdate != lastmillis)
122 : {
123 0 : lastupdate = lastmillis;
124 : }
125 0 : hudmatrix.ortho(0, win_w, win_h, 0, -1, 1);
126 0 : resethudmatrix();
127 0 : resethudshader();
128 :
129 0 : gle::defvertex(2);
130 0 : gle::deftexcoord0();
131 0 : settexture("media/interface/background.png", 0); //main menu background
132 0 : const float bu = win_w*0.67f/256.0f,
133 0 : bv = win_h*0.67f/256.0f;
134 0 : bgquad(0, 0, win_w, win_h, backgroundu, backgroundv, bu, bv);
135 :
136 0 : glEnable(GL_BLEND);
137 0 : glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
138 0 : settexture("media/interface/shadow.png", 3); //peripheral shadow effect
139 0 : bgquad(0, 0, win_w, win_h);
140 0 : glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
141 : // Set position and size of logo
142 0 : const float logo_h = (1.f/3.f)*std::min(win_w, win_h),
143 0 : logo_w = logo_h*(2.f/1.f), // Aspect ratio of logo, defined here
144 0 : logo_x = 0.5f*(win_w - logo_w),
145 0 : logo_y = 0.5f*(win_h*0.5f - logo_h);
146 :
147 0 : settexture( (maxtexsize >= 1024 || maxtexsize == 0) && (hudw() > 1280 || hudh() > 800)
148 : ? "<premul>media/interface/logo_1024.png" //1024x wide logo
149 : : "<premul>media/interface/logo.png", //512x wide logo for small screens
150 : 3);
151 0 : bgquad(logo_x, logo_y, logo_w, logo_h);
152 :
153 0 : glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
154 :
155 0 : if(caption)
156 : {
157 0 : int tw = text_width(caption);
158 0 : const float tsz = 0.04f*std::min(win_w, win_h)/FONTH,
159 0 : tx = 0.5f*(win_w - tw*tsz),
160 0 : ty = win_h - 0.075f*1.5f*std::min(win_w, win_h) - FONTH*tsz;
161 0 : pushhudtranslate(tx, ty, tsz);
162 : //draw_text(caption, 0, 0);
163 0 : ttr.renderttf(caption, {0xFF, 0xFF, 0xFF, 0}, 0, 0);
164 0 : pophudmatrix();
165 : }
166 0 : if(mapshot || mapname)
167 : {
168 0 : float infowidth = 14*FONTH,
169 0 : sz = 0.35f*std::min(win_w, win_h),
170 0 : msz = (0.85f*std::min(win_w, win_h) - sz)/(infowidth + FONTH),
171 0 : x = 0.5f*win_w,
172 0 : y = logo_y+logo_h - sz/15,
173 0 : mx = 0,
174 0 : my = 0,
175 0 : mw = 0,
176 0 : mh = 0;
177 : // Prepare text area for map info
178 0 : if(mapinfo)
179 : {
180 0 : text_boundsf(mapinfo, mw, mh, infowidth);
181 0 : x -= 0.5f * mw * msz;
182 0 : if (mapshot && mapshot!=notexture)
183 : {
184 0 : x -= 0.5f*FONTH * msz;
185 0 : mx = sz + FONTH * msz;
186 : }
187 : }
188 : // Map shot was provided and isn't empty
189 0 : if(mapshot && mapshot!=notexture)
190 : {
191 0 : x -= 0.5f * sz;
192 0 : resethudshader();
193 0 : glBindTexture(GL_TEXTURE_2D, mapshot->id);
194 0 : bgquad(x, y, sz, sz);
195 : }
196 : // Map name was provided
197 0 : if(mapname)
198 : {
199 0 : float tw = text_widthf(mapname),
200 0 : tsz = sz/(8*FONTH),
201 0 : tx = std::max(0.5f * (mw*msz - tw * tsz), 0.0f);
202 0 : pushhudtranslate(x + mx + tx, y, tsz);
203 : //draw_text(mapname, 0, 0);
204 0 : ttr.fontsize(42);
205 0 : ttr.renderttf(mapname, {0xFF, 0xFF, 0xFF, 0}, 0, 0);
206 0 : pophudmatrix();
207 0 : my = 1.5f*FONTH*tsz;
208 : }
209 : // Map info was provided
210 0 : if(mapinfo)
211 : {
212 0 : pushhudtranslate(x + mx, y + my, msz);
213 : //draw_text(mapinfo, 0, 0, 0xFF, 0xFF, 0xFF, 0xFF, -1, infowidth);
214 0 : ttr.fontsize(42);
215 0 : ttr.renderttf(mapinfo, {0xFF, 0xFF, 0xFF, 0}, 0, 0);
216 0 : pophudmatrix();
217 : }
218 : }
219 0 : glDisable(GL_BLEND);
220 0 : }
221 :
222 0 : void swapbuffers(bool)
223 : {
224 0 : gle::disable();
225 0 : SDL_GL_SwapWindow(screen);
226 0 : }
227 :
228 0 : static void setbackgroundinfo(const char *caption = nullptr, const Texture *mapshot = nullptr, const char *mapname = nullptr, const char *mapinfo = nullptr)
229 : {
230 0 : renderedframe = false;
231 0 : backgroundcaption = std::string(caption ? caption : "");
232 0 : backgroundmapshot = mapshot;
233 0 : backgroundmapname = std::string(mapname ? mapname : "");
234 0 : std::string minfo = std::string(mapinfo ? mapinfo : "");
235 0 : if(minfo != backgroundmapinfo)
236 : {
237 0 : backgroundmapinfo = "";
238 0 : if(!minfo.empty())
239 : {
240 0 : backgroundmapinfo = std::string(mapinfo);
241 : }
242 : else
243 : {
244 0 : backgroundmapinfo = "";
245 : }
246 : }
247 0 : }
248 :
249 0 : void renderbackground(const char *caption, const Texture *mapshot, const char *mapname, const char *mapinfo, bool force)
250 : {
251 0 : if(!inbetweenframes && !force)
252 : {
253 0 : return;
254 : }
255 0 : int w = hudw(),
256 0 : h = hudh();
257 0 : if(forceaspect)
258 : {
259 0 : w = std::ceil(h*forceaspect);
260 : }
261 0 : getbackgroundres(w, h);
262 0 : gettextres(w, h);
263 0 : if(force)
264 : {
265 0 : renderbackgroundview(w, h, caption, mapshot, mapname, mapinfo);
266 0 : return;
267 : }
268 : //renders renderbackgroundview three times, with an identical call each time
269 0 : for(int i = 0; i < 3; ++i)
270 : {
271 0 : renderbackgroundview(w, h, caption, mapshot, mapname, mapinfo);
272 0 : swapbuffers(false);
273 : }
274 0 : setbackgroundinfo(caption, mapshot, mapname, mapinfo);
275 : }
276 :
277 0 : static void restorebackground(int w, int h, bool force = false)
278 : {
279 0 : if(renderedframe)
280 : {
281 0 : if(!force)
282 : {
283 0 : return;
284 : }
285 0 : setbackgroundinfo();
286 : }
287 0 : renderbackgroundview(w, h, backgroundcaption.c_str(), backgroundmapshot, backgroundmapname.c_str(), backgroundmapinfo.c_str());
288 : }
289 :
290 : float loadprogress = 0;
291 :
292 0 : static void renderprogressview(int w, int h, float bar, const char *text) // also used during loading
293 : {
294 0 : hudmatrix.ortho(0, w, h, 0, -1, 1);
295 0 : resethudmatrix();
296 0 : resethudshader();
297 :
298 0 : gle::defvertex(2);
299 0 : gle::deftexcoord0();
300 :
301 0 : const float fh = 0.060f*std::min(w, h),
302 0 : fw = fh * 15,
303 0 : fx = renderedframe ? w - fw - fh/4 : 0.5f * (w - fw),
304 0 : fy = renderedframe ? fh/4 : h - fh * 1.5f;
305 0 : settexture("media/interface/loading_frame.png", 3);
306 0 : bgquad(fx, fy, fw, fh);
307 :
308 0 : glEnable(GL_BLEND);
309 0 : glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
310 :
311 0 : const float bw = fw * (512 - 2*8)/512.0f,
312 0 : bh = fh * 20/32.0f,
313 0 : bx = fx + fw * 8/512.0f,
314 0 : by = fy + fh * 6/32.0f,
315 0 : su1 = 0/32.0f,
316 0 : su2 = 8/32.0f,
317 0 : sw = fw * 8/512.0f,
318 0 : eu1 = 24/32.0f,
319 0 : eu2 = 32/32.0f,
320 0 : ew = fw * 8/512.0f,
321 0 : mw = bw - sw - ew,
322 0 : ex = bx+sw + std::max(mw*bar, fw * 8/512.0f);
323 0 : if(bar > 0)
324 : {
325 0 : settexture("media/interface/loading_bar.png", 3);
326 0 : bgquad(bx, by, sw, bh, su1, 0, su2-su1, 1);
327 0 : bgquad(bx+sw, by, ex-(bx+sw), bh, su2, 0, eu1-su2, 1);
328 0 : bgquad(ex, by, ew, bh, eu1, 0, eu2-eu1, 1);
329 : }
330 0 : if(text)
331 : {
332 0 : const int tw = text_width(text);
333 0 : float tsz = bh * 0.6f/FONTH;
334 0 : if(tw * tsz > mw)
335 : {
336 0 : tsz = mw/tw;
337 : }
338 0 : pushhudtranslate(bx+sw, by + (bh - FONTH*tsz)/2, tsz);
339 : //draw_text(text, 0, 0);
340 0 : ttr.fontsize(50);
341 0 : ttr.renderttf(text, {0xFF, 0xFF, 0xFF, 0}, 0, 4);
342 0 : pophudmatrix();
343 : }
344 0 : glDisable(GL_BLEND);
345 0 : }
346 :
347 : static VAR(progressbackground, 0, 0, 1); //force rendering progress bar background texture
348 : static int curvsync = -1;
349 :
350 6 : void renderprogress(float bar, const char *text, bool background) // also used during loading
351 : {
352 6 : if(!inbetweenframes || drawtex)
353 : {
354 6 : return;
355 : }
356 0 : int fps = menufps ? (maxfps ? std::min(maxfps, menufps) : menufps) : maxfps;
357 0 : if(fps)
358 : {
359 : static int lastprogress = 0;
360 0 : int ticks = SDL_GetTicks(),
361 0 : diff = ticks - lastprogress;
362 0 : if(bar > 0 && diff >= 0 && diff < (1000 + fps-1)/fps)
363 : {
364 0 : return;
365 : }
366 0 : lastprogress = ticks;
367 : }
368 0 : int w = hudw(),
369 0 : h = hudh();
370 0 : if(forceaspect)
371 : {
372 0 : w = static_cast<int>(std::ceil(h*forceaspect));
373 : }
374 0 : getbackgroundres(w, h);
375 0 : gettextres(w, h);
376 :
377 0 : bool forcebackground = progressbackground || (mesa_swap_bug && (curvsync || totalmillis==1));
378 0 : if(background || forcebackground)
379 : {
380 0 : restorebackground(w, h, forcebackground);
381 : }
382 0 : renderprogressview(w, h, bar, text);
383 0 : swapbuffers(false);
384 : }
385 :
386 : static bool initwindowpos = false;
387 :
388 0 : void setfullscreen(bool enable)
389 : {
390 0 : if(!screen)
391 : {
392 0 : return;
393 : }
394 : //initwarning(enable ? "fullscreen" : "windowed");
395 0 : SDL_SetWindowFullscreen(screen, enable ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
396 0 : if(!enable)
397 : {
398 0 : SDL_SetWindowSize(screen, scr_w, scr_h);
399 0 : if(initwindowpos)
400 : {
401 0 : int winx = SDL_WINDOWPOS_CENTERED,
402 0 : winy = SDL_WINDOWPOS_CENTERED;
403 0 : SDL_SetWindowPosition(screen, winx, winy);
404 0 : initwindowpos = false;
405 : }
406 : }
407 : }
408 :
409 0 : VARF(fullscreen, 0, 1, 1, setfullscreen(fullscreen!=0));
410 :
411 : /* screenres: sets the window size to w * h pixels, or reduces fullscreen
412 : * resolution to w * h pixels
413 : *
414 : * arguments:
415 : * w: width of new screen res
416 : * h: height of new screen res
417 : */
418 1 : void screenres(int w, int h)
419 : {
420 : //need to cast enum to int for std's clamp implementation
421 1 : scr_w = std::clamp(w, static_cast<int>(SCR_MINW), static_cast<int>(SCR_MAXW));
422 1 : scr_h = std::clamp(h, static_cast<int>(SCR_MINH), static_cast<int>(SCR_MAXH));
423 1 : if(screen)
424 : {
425 0 : scr_w = std::min(scr_w, desktopw);
426 0 : scr_h = std::min(scr_h, desktoph);
427 0 : if(SDL_GetWindowFlags(screen) & SDL_WINDOW_FULLSCREEN)
428 : {
429 0 : gl_resize();
430 : }
431 : else
432 : {
433 0 : SDL_SetWindowSize(screen, scr_w, scr_h);
434 : }
435 : }
436 : else
437 : {
438 1 : initwarning("screen resolution");
439 : }
440 1 : }
441 :
442 :
443 0 : static void setgamma(int val)
444 : {
445 0 : if(screen && SDL_SetWindowBrightness(screen, val/100.0f) < 0)
446 : {
447 0 : conoutf(Console_Error, "Could not set gamma: %s", SDL_GetError());
448 : }
449 0 : }
450 :
451 : static int curgamma = 100;
452 0 : static VARFNP(gamma, reqgamma, 30, 100, 300,
453 : {
454 : if(initing || reqgamma == curgamma)
455 : {
456 : return;
457 : }
458 : curgamma = reqgamma;
459 : setgamma(curgamma);
460 : });
461 :
462 : /* restoregamma: sets gamma to the previous set value, useful for reverting bad-
463 : * looking gamma trial settings
464 : *
465 : * used in iengine.h
466 : */
467 0 : void restoregamma()
468 : {
469 0 : if(initing || reqgamma == 100)
470 : {
471 0 : return;
472 : }
473 0 : curgamma = reqgamma;
474 0 : setgamma(curgamma);
475 : }
476 :
477 0 : void cleargamma()
478 : {
479 0 : if(curgamma != 100 && screen)
480 : {
481 0 : SDL_SetWindowBrightness(screen, 1.0f);
482 : }
483 0 : }
484 :
485 : void restorevsync(); //prototype to fix chicken-egg initialization problem caused by VARFP
486 :
487 0 : static VARFP(vsync, 0, 0, 1, restorevsync()); //vertical sync of framebuffer to refresh rate
488 0 : static VARFP(vsynctear, 0, 0, 1, { if(vsync) restorevsync(); }); //toggles sdl2's adaptive sync function
489 :
490 0 : void restorevsync()
491 : {
492 0 : if(initing || !glcontext)
493 : {
494 0 : return;
495 : }
496 0 : if(!SDL_GL_SetSwapInterval(vsync ? (vsynctear ? -1 : 1) : 0))
497 : {
498 0 : curvsync = vsync;
499 : }
500 : }
501 :
502 : //used in iengine.h
503 0 : void setupscreen()
504 : {
505 : //clear prior gl context/screen if present
506 0 : if(glcontext)
507 : {
508 0 : SDL_GL_DeleteContext(glcontext);
509 0 : glcontext = nullptr;
510 : }
511 0 : if(screen)
512 : {
513 0 : SDL_DestroyWindow(screen);
514 0 : screen = nullptr;
515 : }
516 0 : curvsync = -1;
517 :
518 : SDL_Rect desktop;
519 0 : if(SDL_GetDisplayBounds(0, &desktop) < 0)
520 : {
521 0 : fatal("failed querying desktop bounds: %s", SDL_GetError());
522 : }
523 0 : desktopw = desktop.w;
524 0 : desktoph = desktop.h;
525 :
526 0 : if(scr_h < 0)
527 : {
528 0 : scr_h = SCR_DEFAULTH;
529 : }
530 0 : if(scr_w < 0)
531 : {
532 0 : scr_w = (scr_h*desktopw)/desktoph;
533 : }
534 0 : scr_w = std::min(scr_w, desktopw);
535 0 : scr_h = std::min(scr_h, desktoph);
536 :
537 0 : int winx = SDL_WINDOWPOS_UNDEFINED,
538 0 : winy = SDL_WINDOWPOS_UNDEFINED,
539 0 : winw = scr_w,
540 0 : winh = scr_h,
541 0 : flags = SDL_WINDOW_RESIZABLE;
542 0 : if(fullscreen)
543 : {
544 0 : winw = desktopw;
545 0 : winh = desktoph;
546 0 : flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
547 0 : initwindowpos = true;
548 : }
549 :
550 0 : SDL_GL_ResetAttributes();
551 0 : SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
552 0 : SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 0);
553 0 : SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
554 :
555 0 : uint32_t windowflags = SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN | SDL_WINDOW_INPUT_FOCUS | SDL_WINDOW_MOUSE_FOCUS | flags;
556 : //create new screen title x y w h flags
557 0 : screen = SDL_CreateWindow("Imprimis", winx, winy, winw, winh, windowflags);
558 0 : ttr.initttf();
559 0 : ttr.openfont("media/interface/font/default.ttf", 24);
560 :
561 0 : if(!screen)
562 : {
563 0 : fatal("failed to create OpenGL window: %s", SDL_GetError());
564 : }
565 0 : SDL_Surface *icon = loadsurface("media/interface/icon.png"); //path to taskbar icon
566 0 : if(icon)
567 : {
568 0 : SDL_SetWindowIcon(screen, icon);
569 0 : SDL_FreeSurface(icon); //don't need it any more
570 : }
571 :
572 0 : SDL_SetWindowMinimumSize(screen, SCR_MINW, SCR_MINH);
573 0 : SDL_SetWindowMaximumSize(screen, SCR_MAXW, SCR_MAXH);
574 : //set opengl version to 4.0
575 0 : SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
576 0 : SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
577 : //set core profile
578 0 : SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
579 0 : glcontext = SDL_GL_CreateContext(screen);
580 :
581 : //
582 0 : GLenum err = glewInit();
583 0 : if (GLEW_OK != err)
584 : {
585 : /* Problem: glewInit failed, something is seriously wrong. */
586 0 : logoutf("Error: %s", glewGetErrorString(err));
587 : }
588 0 : logoutf("init: GLEW %s", glewGetString(GLEW_VERSION));
589 : //check if OpenGL context is sane
590 0 : if(!glcontext)
591 : {
592 0 : fatal("failed to create OpenGL context: %s", SDL_GetError());
593 : }
594 0 : SDL_GetWindowSize(screen, &screenw, &screenh);
595 0 : }
596 :
597 : //full reset of renderer
598 2 : void resetgl()
599 : {
600 2 : if(!glslversion)
601 : {
602 2 : conoutf(Console_Error, "Cannot reset GL without GL initialized, operation not performed");
603 2 : return;
604 : }
605 0 : clearchanges(Change_Graphics|Change_Shaders);
606 :
607 0 : renderbackground("resetting OpenGL");
608 :
609 0 : rootworld.cleanupva();
610 0 : cleanupparticles();
611 0 : cleanupstains();
612 0 : cleanupmodels();
613 0 : cleanupprefabs();
614 0 : cleanuptextures();
615 0 : cleanuplights();
616 0 : cleanupshaders();
617 0 : cleanupgl();
618 :
619 0 : setupscreen();
620 :
621 0 : inputgrab(grabinput);
622 :
623 0 : gl_init();
624 :
625 0 : inbetweenframes = false;
626 : //texture reloading
627 0 : if(!notexture->reload() ||
628 0 : !reloadtexture("<premul>media/interface/logo.png") ||
629 0 : !reloadtexture("<premul>media/interface/logo_1024.png") ||
630 0 : !reloadtexture("media/interface/background.png") ||
631 0 : !reloadtexture("media/interface/shadow.png") ||
632 0 : !reloadtexture("media/interface/mapshot_frame.png") ||
633 0 : !reloadtexture("media/interface/loading_frame.png") ||
634 0 : !reloadtexture("media/interface/loading_bar.png"))
635 : {
636 0 : fatal("failed to reload core texture");
637 : }
638 0 : reloadfonts();
639 0 : inbetweenframes = true;
640 0 : renderbackground("initializing...");
641 0 : restoregamma();
642 0 : restorevsync();
643 0 : initgbuffer();
644 0 : reloadshaders();
645 0 : reloadtextures();
646 0 : rootworld.allchanged(true);
647 : }
648 :
649 : /**
650 : * @brief Delays the frame to the prescribed rate.
651 : *
652 : * Uses SDL_Delay to delay a frame, given the time the last frame was
653 : * rendered and the current time.
654 : *
655 : * @param millis the time (in ms) since program started
656 : * @param curmillis the last registered frame time
657 : */
658 0 : void limitfps(int &millis, int curmillis)
659 : {
660 0 : int limit = (mainmenu || minimized) && menufps ? (maxfps ? std::min(maxfps, menufps) : menufps) : maxfps;
661 0 : if(!limit)
662 : {
663 0 : return;
664 : }
665 : static int fpserror = 0;
666 0 : int delay = 1000/limit - (millis-curmillis);
667 0 : if(delay < 0)
668 : {
669 0 : fpserror = 0;
670 : }
671 : else
672 : {
673 0 : fpserror += 1000%limit;
674 0 : if(fpserror >= limit)
675 : {
676 0 : ++delay;
677 0 : fpserror -= limit;
678 : }
679 0 : if(delay > 0)
680 : {
681 0 : SDL_Delay(delay);
682 0 : millis += delay;
683 : }
684 : }
685 : }
686 :
687 : #ifdef WIN32
688 : // Force Optimus setups to use the NVIDIA GPU
689 : // or also for AMD dual graphics
690 : extern "C"
691 : {
692 : #ifdef __GNUC__
693 : __attribute__((dllexport))
694 : #else
695 : __declspec(dllexport)
696 : #endif
697 : DWORD NvOptimusEnablement = 1;
698 :
699 : #ifdef __GNUC__
700 : __attribute__((dllexport))
701 : #else
702 : __declspec(dllexport)
703 : #endif
704 : DWORD AmdPowerXpressRequestHighPerformance = 1;
705 : }
706 : #endif
707 :
708 : static constexpr int maxfpshistory = 60;
709 :
710 : int fpspos = 0;
711 : std::array<int, maxfpshistory> fpshistory;
712 :
713 0 : void resetfpshistory()
714 : {
715 0 : fpshistory.fill(1);
716 0 : fpspos = 0;
717 0 : }
718 :
719 0 : void updatefpshistory(int millis)
720 : {
721 0 : fpshistory[fpspos++] = std::max(1, std::min(1000, millis));
722 0 : if(fpspos>=maxfpshistory)
723 : {
724 0 : fpspos = 0;
725 : }
726 0 : }
727 :
728 1 : void getfps(int &fps, int &bestdiff, int &worstdiff)
729 : {
730 1 : int total = fpshistory.at(maxfpshistory-1),
731 1 : best = total,
732 1 : worst = total;
733 61 : for(const int &millis : fpshistory)
734 : {
735 60 : total += millis;
736 60 : if(millis < best)
737 : {
738 0 : best = millis;
739 : }
740 60 : if(millis > worst)
741 : {
742 0 : worst = millis;
743 : }
744 : }
745 1 : if(total) //guard against div by 0
746 : {
747 0 : fps = (1000*maxfpshistory)/total;
748 0 : bestdiff = 1000/best-fps;
749 0 : worstdiff = fps-1000/worst;
750 : }
751 : else
752 : {
753 1 : fps = 0;
754 1 : bestdiff = 0;
755 1 : worstdiff = 0;
756 : }
757 1 : }
758 :
759 1 : void getfpscmd(const int *raw)
760 : {
761 1 : if(*raw)
762 : {
763 0 : floatret(1000.0f/fpshistory[(fpspos+maxfpshistory-1)%maxfpshistory]);
764 : }
765 : else
766 : {
767 : int fps, bestdiff, worstdiff;
768 1 : getfps(fps, bestdiff, worstdiff);
769 1 : intret(fps);
770 : }
771 1 : }
772 :
773 1 : void initrenderwindowcmds()
774 : {
775 1 : addcommand("getfps", reinterpret_cast<identfun>(getfpscmd), "i", Id_Command);
776 1 : addcommand("resetgl", reinterpret_cast<identfun>(resetgl), "", Id_Command);
777 1 : addcommand("screenres", reinterpret_cast<identfun>(screenres), "ii", Id_Command);
778 1 : }
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