1 /*
2 Minetest
3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4 Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <IrrlichtDevice.h>
22 #include <irrlicht.h>
23 #include "fontengine.h"
24 #include "client.h"
25 #include "clouds.h"
26 #include "util/numeric.h"
27 #include "guiscalingfilter.h"
28 #include "localplayer.h"
29 #include "client/hud.h"
30 #include "camera.h"
31 #include "minimap.h"
32 #include "clientmap.h"
33 #include "renderingengine.h"
34 #include "render/core.h"
35 #include "render/factory.h"
36 #include "inputhandler.h"
37 #include "gettext.h"
38 #include "../gui/guiSkin.h"
39
40 #if !defined(_WIN32) && !defined(__APPLE__) && !defined(__ANDROID__) && \
41 !defined(SERVER) && !defined(__HAIKU__)
42 #define XORG_USED
43 #endif
44 #ifdef XORG_USED
45 #include <X11/Xlib.h>
46 #include <X11/Xutil.h>
47 #include <X11/Xatom.h>
48 #endif
49
50 #ifdef _WIN32
51 #include <windows.h>
52 #include <winuser.h>
53 #endif
54
55 #if ENABLE_GLES
56 #include "filesys.h"
57 #endif
58
59 RenderingEngine *RenderingEngine::s_singleton = nullptr;
60
61
createSkin(gui::IGUIEnvironment * environment,gui::EGUI_SKIN_TYPE type,video::IVideoDriver * driver)62 static gui::GUISkin *createSkin(gui::IGUIEnvironment *environment,
63 gui::EGUI_SKIN_TYPE type, video::IVideoDriver *driver)
64 {
65 gui::GUISkin *skin = new gui::GUISkin(type, driver);
66
67 gui::IGUIFont *builtinfont = environment->getBuiltInFont();
68 gui::IGUIFontBitmap *bitfont = nullptr;
69 if (builtinfont && builtinfont->getType() == gui::EGFT_BITMAP)
70 bitfont = (gui::IGUIFontBitmap*)builtinfont;
71
72 gui::IGUISpriteBank *bank = 0;
73 skin->setFont(builtinfont);
74
75 if (bitfont)
76 bank = bitfont->getSpriteBank();
77
78 skin->setSpriteBank(bank);
79
80 return skin;
81 }
82
83
RenderingEngine(IEventReceiver * receiver)84 RenderingEngine::RenderingEngine(IEventReceiver *receiver)
85 {
86 sanity_check(!s_singleton);
87
88 // Resolution selection
89 bool fullscreen = g_settings->getBool("fullscreen");
90 u16 screen_w = g_settings->getU16("screen_w");
91 u16 screen_h = g_settings->getU16("screen_h");
92
93 // bpp, fsaa, vsync
94 bool vsync = g_settings->getBool("vsync");
95 u16 bits = g_settings->getU16("fullscreen_bpp");
96 u16 fsaa = g_settings->getU16("fsaa");
97
98 // stereo buffer required for pageflip stereo
99 bool stereo_buffer = g_settings->get("3d_mode") == "pageflip";
100
101 // Determine driver
102 video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
103 const std::string &driverstring = g_settings->get("video_driver");
104 std::vector<video::E_DRIVER_TYPE> drivers =
105 RenderingEngine::getSupportedVideoDrivers();
106 u32 i;
107 for (i = 0; i != drivers.size(); i++) {
108 if (!strcasecmp(driverstring.c_str(),
109 RenderingEngine::getVideoDriverName(drivers[i]))) {
110 driverType = drivers[i];
111 break;
112 }
113 }
114 if (i == drivers.size()) {
115 errorstream << "Invalid video_driver specified; "
116 "defaulting to opengl"
117 << std::endl;
118 }
119
120 SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
121 params.DriverType = driverType;
122 params.WindowSize = core::dimension2d<u32>(screen_w, screen_h);
123 params.Bits = bits;
124 params.AntiAlias = fsaa;
125 params.Fullscreen = fullscreen;
126 params.Stencilbuffer = false;
127 params.Stereobuffer = stereo_buffer;
128 params.Vsync = vsync;
129 params.EventReceiver = receiver;
130 params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
131 params.ZBufferBits = 24;
132 #ifdef __ANDROID__
133 params.PrivateData = porting::app_global;
134 #endif
135 #if ENABLE_GLES
136 // there is no standardized path for these on desktop
137 std::string rel_path = std::string("client") + DIR_DELIM
138 + "shaders" + DIR_DELIM + "Irrlicht";
139 params.OGLES2ShaderPath = (porting::path_share + DIR_DELIM + rel_path + DIR_DELIM).c_str();
140 #endif
141
142 m_device = createDeviceEx(params);
143 driver = m_device->getVideoDriver();
144
145 s_singleton = this;
146
147 auto skin = createSkin(m_device->getGUIEnvironment(),
148 gui::EGST_WINDOWS_METALLIC, driver);
149 m_device->getGUIEnvironment()->setSkin(skin);
150 skin->drop();
151 }
152
~RenderingEngine()153 RenderingEngine::~RenderingEngine()
154 {
155 core.reset();
156 m_device->closeDevice();
157 s_singleton = nullptr;
158 }
159
getWindowSize() const160 v2u32 RenderingEngine::getWindowSize() const
161 {
162 if (core)
163 return core->getVirtualSize();
164 return m_device->getVideoDriver()->getScreenSize();
165 }
166
setResizable(bool resize)167 void RenderingEngine::setResizable(bool resize)
168 {
169 m_device->setResizable(resize);
170 }
171
print_video_modes()172 bool RenderingEngine::print_video_modes()
173 {
174 IrrlichtDevice *nulldevice;
175
176 bool vsync = g_settings->getBool("vsync");
177 u16 fsaa = g_settings->getU16("fsaa");
178 MyEventReceiver *receiver = new MyEventReceiver();
179
180 SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
181 params.DriverType = video::EDT_NULL;
182 params.WindowSize = core::dimension2d<u32>(640, 480);
183 params.Bits = 24;
184 params.AntiAlias = fsaa;
185 params.Fullscreen = false;
186 params.Stencilbuffer = false;
187 params.Vsync = vsync;
188 params.EventReceiver = receiver;
189 params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
190
191 nulldevice = createDeviceEx(params);
192
193 if (!nulldevice) {
194 delete receiver;
195 return false;
196 }
197
198 std::cout << _("Available video modes (WxHxD):") << std::endl;
199
200 video::IVideoModeList *videomode_list = nulldevice->getVideoModeList();
201
202 if (videomode_list != NULL) {
203 s32 videomode_count = videomode_list->getVideoModeCount();
204 core::dimension2d<u32> videomode_res;
205 s32 videomode_depth;
206 for (s32 i = 0; i < videomode_count; ++i) {
207 videomode_res = videomode_list->getVideoModeResolution(i);
208 videomode_depth = videomode_list->getVideoModeDepth(i);
209 std::cout << videomode_res.Width << "x" << videomode_res.Height
210 << "x" << videomode_depth << std::endl;
211 }
212
213 std::cout << _("Active video mode (WxHxD):") << std::endl;
214 videomode_res = videomode_list->getDesktopResolution();
215 videomode_depth = videomode_list->getDesktopDepth();
216 std::cout << videomode_res.Width << "x" << videomode_res.Height << "x"
217 << videomode_depth << std::endl;
218 }
219
220 nulldevice->drop();
221 delete receiver;
222
223 return videomode_list != NULL;
224 }
225
setupTopLevelWindow(const std::string & name)226 bool RenderingEngine::setupTopLevelWindow(const std::string &name)
227 {
228 // FIXME: It would make more sense for there to be a switch of some
229 // sort here that would call the correct toplevel setup methods for
230 // the environment Minetest is running in.
231
232 /* Setting Xorg properties for the top level window */
233 setupTopLevelXorgWindow(name);
234
235 /* Setting general properties for the top level window */
236 verbosestream << "Client: Configuring general top level"
237 << " window properties"
238 << std::endl;
239 bool result = setWindowIcon();
240
241 return result;
242 }
243
setupTopLevelXorgWindow(const std::string & name)244 void RenderingEngine::setupTopLevelXorgWindow(const std::string &name)
245 {
246 #ifdef XORG_USED
247 const video::SExposedVideoData exposedData = driver->getExposedVideoData();
248
249 Display *x11_dpl = reinterpret_cast<Display *>(exposedData.OpenGLLinux.X11Display);
250 if (x11_dpl == NULL) {
251 warningstream << "Client: Could not find X11 Display in ExposedVideoData"
252 << std::endl;
253 return;
254 }
255
256 verbosestream << "Client: Configuring X11-specific top level"
257 << " window properties"
258 << std::endl;
259
260
261 Window x11_win = reinterpret_cast<Window>(exposedData.OpenGLLinux.X11Window);
262
263 // Set application name and class hints. For now name and class are the same.
264 XClassHint *classhint = XAllocClassHint();
265 classhint->res_name = const_cast<char *>(name.c_str());
266 classhint->res_class = const_cast<char *>(name.c_str());
267
268 XSetClassHint(x11_dpl, x11_win, classhint);
269 XFree(classhint);
270
271 // FIXME: In the future WMNormalHints should be set ... e.g see the
272 // gtk/gdk code (gdk/x11/gdksurface-x11.c) for the setup_top_level
273 // method. But for now (as it would require some significant changes)
274 // leave the code as is.
275
276 // The following is borrowed from the above gdk source for setting top
277 // level windows. The source indicates and the Xlib docs suggest that
278 // this will set the WM_CLIENT_MACHINE and WM_LOCAL_NAME. This will not
279 // set the WM_CLIENT_MACHINE to a Fully Qualified Domain Name (FQDN) which is
280 // required by the Extended Window Manager Hints (EWMH) spec when setting
281 // the _NET_WM_PID (see further down) but running Minetest in an env
282 // where the window manager is on another machine from Minetest (therefore
283 // making the PID useless) is not expected to be a problem. Further
284 // more, using gtk/gdk as the model it would seem that not using a FQDN is
285 // not an issue for modern Xorg window managers.
286
287 verbosestream << "Client: Setting Xorg window manager Properties"
288 << std::endl;
289
290 XSetWMProperties (x11_dpl, x11_win, NULL, NULL, NULL, 0, NULL, NULL, NULL);
291
292 // Set the _NET_WM_PID window property according to the EWMH spec. _NET_WM_PID
293 // (in conjunction with WM_CLIENT_MACHINE) can be used by window managers to
294 // force a shutdown of an application if it doesn't respond to the destroy
295 // window message.
296
297 verbosestream << "Client: Setting Xorg _NET_WM_PID extened window manager property"
298 << std::endl;
299
300 Atom NET_WM_PID = XInternAtom(x11_dpl, "_NET_WM_PID", false);
301
302 pid_t pid = getpid();
303
304 XChangeProperty(x11_dpl, x11_win, NET_WM_PID,
305 XA_CARDINAL, 32, PropModeReplace,
306 reinterpret_cast<unsigned char *>(&pid),1);
307
308 // Set the WM_CLIENT_LEADER window property here. Minetest has only one
309 // window and that window will always be the leader.
310
311 verbosestream << "Client: Setting Xorg WM_CLIENT_LEADER property"
312 << std::endl;
313
314 Atom WM_CLIENT_LEADER = XInternAtom(x11_dpl, "WM_CLIENT_LEADER", false);
315
316 XChangeProperty (x11_dpl, x11_win, WM_CLIENT_LEADER,
317 XA_WINDOW, 32, PropModeReplace,
318 reinterpret_cast<unsigned char *>(&x11_win), 1);
319 #endif
320 }
321
322 #ifdef _WIN32
getWindowHandle(irr::video::IVideoDriver * driver,HWND & hWnd)323 static bool getWindowHandle(irr::video::IVideoDriver *driver, HWND &hWnd)
324 {
325 const video::SExposedVideoData exposedData = driver->getExposedVideoData();
326
327 switch (driver->getDriverType()) {
328 case video::EDT_DIRECT3D8:
329 hWnd = reinterpret_cast<HWND>(exposedData.D3D8.HWnd);
330 break;
331 case video::EDT_DIRECT3D9:
332 hWnd = reinterpret_cast<HWND>(exposedData.D3D9.HWnd);
333 break;
334 case video::EDT_OPENGL:
335 hWnd = reinterpret_cast<HWND>(exposedData.OpenGLWin32.HWnd);
336 break;
337 default:
338 return false;
339 }
340
341 return true;
342 }
343 #endif
344
setWindowIcon()345 bool RenderingEngine::setWindowIcon()
346 {
347 #if defined(XORG_USED)
348 #if RUN_IN_PLACE
349 return setXorgWindowIconFromPath(
350 porting::path_share + "/misc/" PROJECT_NAME "-xorg-icon-128.png");
351 #else
352 // We have semi-support for reading in-place data if we are
353 // compiled with RUN_IN_PLACE. Don't break with this and
354 // also try the path_share location.
355 return setXorgWindowIconFromPath(
356 ICON_DIR "/hicolor/128x128/apps/" PROJECT_NAME ".png") ||
357 setXorgWindowIconFromPath(porting::path_share + "/misc/" PROJECT_NAME
358 "-xorg-icon-128.png");
359 #endif
360 #elif defined(_WIN32)
361 HWND hWnd; // Window handle
362 if (!getWindowHandle(driver, hWnd))
363 return false;
364
365 // Load the ICON from resource file
366 const HICON hicon = LoadIcon(GetModuleHandle(NULL),
367 MAKEINTRESOURCE(130) // The ID of the ICON defined in
368 // winresource.rc
369 );
370
371 if (hicon) {
372 SendMessage(hWnd, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(hicon));
373 SendMessage(hWnd, WM_SETICON, ICON_SMALL,
374 reinterpret_cast<LPARAM>(hicon));
375 return true;
376 }
377 return false;
378 #else
379 return false;
380 #endif
381 }
382
setXorgWindowIconFromPath(const std::string & icon_file)383 bool RenderingEngine::setXorgWindowIconFromPath(const std::string &icon_file)
384 {
385 #ifdef XORG_USED
386
387 video::IImageLoader *image_loader = NULL;
388 u32 cnt = driver->getImageLoaderCount();
389 for (u32 i = 0; i < cnt; i++) {
390 if (driver->getImageLoader(i)->isALoadableFileExtension(
391 icon_file.c_str())) {
392 image_loader = driver->getImageLoader(i);
393 break;
394 }
395 }
396
397 if (!image_loader) {
398 warningstream << "Could not find image loader for file '" << icon_file
399 << "'" << std::endl;
400 return false;
401 }
402
403 io::IReadFile *icon_f =
404 m_device->getFileSystem()->createAndOpenFile(icon_file.c_str());
405
406 if (!icon_f) {
407 warningstream << "Could not load icon file '" << icon_file << "'"
408 << std::endl;
409 return false;
410 }
411
412 video::IImage *img = image_loader->loadImage(icon_f);
413
414 if (!img) {
415 warningstream << "Could not load icon file '" << icon_file << "'"
416 << std::endl;
417 icon_f->drop();
418 return false;
419 }
420
421 u32 height = img->getDimension().Height;
422 u32 width = img->getDimension().Width;
423
424 size_t icon_buffer_len = 2 + height * width;
425 long *icon_buffer = new long[icon_buffer_len];
426
427 icon_buffer[0] = width;
428 icon_buffer[1] = height;
429
430 for (u32 x = 0; x < width; x++) {
431 for (u32 y = 0; y < height; y++) {
432 video::SColor col = img->getPixel(x, y);
433 long pixel_val = 0;
434 pixel_val |= (u8)col.getAlpha() << 24;
435 pixel_val |= (u8)col.getRed() << 16;
436 pixel_val |= (u8)col.getGreen() << 8;
437 pixel_val |= (u8)col.getBlue();
438 icon_buffer[2 + x + y * width] = pixel_val;
439 }
440 }
441
442 img->drop();
443 icon_f->drop();
444
445 const video::SExposedVideoData &video_data = driver->getExposedVideoData();
446
447 Display *x11_dpl = (Display *)video_data.OpenGLLinux.X11Display;
448
449 if (x11_dpl == NULL) {
450 warningstream << "Could not find x11 display for setting its icon."
451 << std::endl;
452 delete[] icon_buffer;
453 return false;
454 }
455
456 Window x11_win = (Window)video_data.OpenGLLinux.X11Window;
457
458 Atom net_wm_icon = XInternAtom(x11_dpl, "_NET_WM_ICON", False);
459 Atom cardinal = XInternAtom(x11_dpl, "CARDINAL", False);
460 XChangeProperty(x11_dpl, x11_win, net_wm_icon, cardinal, 32, PropModeReplace,
461 (const unsigned char *)icon_buffer, icon_buffer_len);
462
463 delete[] icon_buffer;
464
465 #endif
466 return true;
467 }
468
469 /*
470 Draws a screen with a single text on it.
471 Text will be removed when the screen is drawn the next time.
472 Additionally, a progressbar can be drawn when percent is set between 0 and 100.
473 */
_draw_load_screen(const std::wstring & text,gui::IGUIEnvironment * guienv,ITextureSource * tsrc,float dtime,int percent,bool clouds)474 void RenderingEngine::_draw_load_screen(const std::wstring &text,
475 gui::IGUIEnvironment *guienv, ITextureSource *tsrc, float dtime,
476 int percent, bool clouds)
477 {
478 v2u32 screensize = RenderingEngine::get_instance()->getWindowSize();
479
480 v2s32 textsize(g_fontengine->getTextWidth(text), g_fontengine->getLineHeight());
481 v2s32 center(screensize.X / 2, screensize.Y / 2);
482 core::rect<s32> textrect(center - textsize / 2, center + textsize / 2);
483
484 gui::IGUIStaticText *guitext =
485 guienv->addStaticText(text.c_str(), textrect, false, false);
486 guitext->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_UPPERLEFT);
487
488 bool cloud_menu_background = clouds && g_settings->getBool("menu_clouds");
489 if (cloud_menu_background) {
490 g_menuclouds->step(dtime * 3);
491 g_menuclouds->render();
492 get_video_driver()->beginScene(
493 true, true, video::SColor(255, 140, 186, 250));
494 g_menucloudsmgr->drawAll();
495 } else
496 get_video_driver()->beginScene(true, true, video::SColor(255, 0, 0, 0));
497
498 // draw progress bar
499 if ((percent >= 0) && (percent <= 100)) {
500 video::ITexture *progress_img = tsrc->getTexture("progress_bar.png");
501 video::ITexture *progress_img_bg =
502 tsrc->getTexture("progress_bar_bg.png");
503
504 if (progress_img && progress_img_bg) {
505 #ifndef __ANDROID__
506 const core::dimension2d<u32> &img_size =
507 progress_img_bg->getSize();
508 u32 imgW = rangelim(img_size.Width, 200, 600);
509 u32 imgH = rangelim(img_size.Height, 24, 72);
510 #else
511 const core::dimension2d<u32> img_size(256, 48);
512 float imgRatio = (float)img_size.Height / img_size.Width;
513 u32 imgW = screensize.X / 2.2f;
514 u32 imgH = floor(imgW * imgRatio);
515 #endif
516 v2s32 img_pos((screensize.X - imgW) / 2,
517 (screensize.Y - imgH) / 2);
518
519 draw2DImageFilterScaled(get_video_driver(), progress_img_bg,
520 core::rect<s32>(img_pos.X, img_pos.Y,
521 img_pos.X + imgW,
522 img_pos.Y + imgH),
523 core::rect<s32>(0, 0, img_size.Width,
524 img_size.Height),
525 0, 0, true);
526
527 draw2DImageFilterScaled(get_video_driver(), progress_img,
528 core::rect<s32>(img_pos.X, img_pos.Y,
529 img_pos.X + (percent * imgW) / 100,
530 img_pos.Y + imgH),
531 core::rect<s32>(0, 0,
532 (percent * img_size.Width) / 100,
533 img_size.Height),
534 0, 0, true);
535 }
536 }
537
538 guienv->drawAll();
539 get_video_driver()->endScene();
540 guitext->remove();
541 }
542
543 /*
544 Draws the menu scene including (optional) cloud background.
545 */
_draw_menu_scene(gui::IGUIEnvironment * guienv,float dtime,bool clouds)546 void RenderingEngine::_draw_menu_scene(gui::IGUIEnvironment *guienv,
547 float dtime, bool clouds)
548 {
549 bool cloud_menu_background = clouds && g_settings->getBool("menu_clouds");
550 if (cloud_menu_background) {
551 g_menuclouds->step(dtime * 3);
552 g_menuclouds->render();
553 get_video_driver()->beginScene(
554 true, true, video::SColor(255, 140, 186, 250));
555 g_menucloudsmgr->drawAll();
556 } else
557 get_video_driver()->beginScene(true, true, video::SColor(255, 0, 0, 0));
558
559 guienv->drawAll();
560 get_video_driver()->endScene();
561 }
562
getSupportedVideoModes()563 std::vector<core::vector3d<u32>> RenderingEngine::getSupportedVideoModes()
564 {
565 IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
566 sanity_check(nulldevice);
567
568 std::vector<core::vector3d<u32>> mlist;
569 video::IVideoModeList *modelist = nulldevice->getVideoModeList();
570
571 s32 num_modes = modelist->getVideoModeCount();
572 for (s32 i = 0; i != num_modes; i++) {
573 core::dimension2d<u32> mode_res = modelist->getVideoModeResolution(i);
574 u32 mode_depth = (u32)modelist->getVideoModeDepth(i);
575 mlist.emplace_back(mode_res.Width, mode_res.Height, mode_depth);
576 }
577
578 nulldevice->drop();
579 return mlist;
580 }
581
getSupportedVideoDrivers()582 std::vector<irr::video::E_DRIVER_TYPE> RenderingEngine::getSupportedVideoDrivers()
583 {
584 std::vector<irr::video::E_DRIVER_TYPE> drivers;
585
586 for (int i = 0; i != irr::video::EDT_COUNT; i++) {
587 if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE)i))
588 drivers.push_back((irr::video::E_DRIVER_TYPE)i);
589 }
590
591 return drivers;
592 }
593
_initialize(Client * client,Hud * hud)594 void RenderingEngine::_initialize(Client *client, Hud *hud)
595 {
596 const std::string &draw_mode = g_settings->get("3d_mode");
597 core.reset(createRenderingCore(draw_mode, m_device, client, hud));
598 core->initialize();
599 }
600
_finalize()601 void RenderingEngine::_finalize()
602 {
603 core.reset();
604 }
605
_draw_scene(video::SColor skycolor,bool show_hud,bool show_minimap,bool draw_wield_tool,bool draw_crosshair)606 void RenderingEngine::_draw_scene(video::SColor skycolor, bool show_hud,
607 bool show_minimap, bool draw_wield_tool, bool draw_crosshair)
608 {
609 core->draw(skycolor, show_hud, show_minimap, draw_wield_tool, draw_crosshair);
610 }
611
getVideoDriverName(irr::video::E_DRIVER_TYPE type)612 const char *RenderingEngine::getVideoDriverName(irr::video::E_DRIVER_TYPE type)
613 {
614 static const char *driver_ids[] = {
615 "null",
616 "software",
617 "burningsvideo",
618 "direct3d8",
619 "direct3d9",
620 "opengl",
621 "ogles1",
622 "ogles2",
623 };
624
625 return driver_ids[type];
626 }
627
getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)628 const char *RenderingEngine::getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
629 {
630 static const char *driver_names[] = {
631 "NULL Driver",
632 "Software Renderer",
633 "Burning's Video",
634 "Direct3D 8",
635 "Direct3D 9",
636 "OpenGL",
637 "OpenGL ES1",
638 "OpenGL ES2",
639 };
640
641 return driver_names[type];
642 }
643
644 #ifndef __ANDROID__
645 #if defined(XORG_USED)
646
calcDisplayDensity()647 static float calcDisplayDensity()
648 {
649 const char *current_display = getenv("DISPLAY");
650
651 if (current_display != NULL) {
652 Display *x11display = XOpenDisplay(current_display);
653
654 if (x11display != NULL) {
655 /* try x direct */
656 int dh = DisplayHeight(x11display, 0);
657 int dw = DisplayWidth(x11display, 0);
658 int dh_mm = DisplayHeightMM(x11display, 0);
659 int dw_mm = DisplayWidthMM(x11display, 0);
660 XCloseDisplay(x11display);
661
662 if (dh_mm != 0 && dw_mm != 0) {
663 float dpi_height = floor(dh / (dh_mm * 0.039370) + 0.5);
664 float dpi_width = floor(dw / (dw_mm * 0.039370) + 0.5);
665 return std::max(dpi_height, dpi_width) / 96.0;
666 }
667 }
668 }
669
670 /* return manually specified dpi */
671 return g_settings->getFloat("screen_dpi") / 96.0;
672 }
673
getDisplayDensity()674 float RenderingEngine::getDisplayDensity()
675 {
676 static float cached_display_density = calcDisplayDensity();
677 return cached_display_density;
678 }
679
680 #elif defined(_WIN32)
681
682
calcDisplayDensity(irr::video::IVideoDriver * driver)683 static float calcDisplayDensity(irr::video::IVideoDriver *driver)
684 {
685 HWND hWnd;
686 if (getWindowHandle(driver, hWnd)) {
687 HDC hdc = GetDC(hWnd);
688 float dpi = GetDeviceCaps(hdc, LOGPIXELSX);
689 ReleaseDC(hWnd, hdc);
690 return dpi / 96.0f;
691 }
692
693 /* return manually specified dpi */
694 return g_settings->getFloat("screen_dpi") / 96.0f;
695 }
696
getDisplayDensity()697 float RenderingEngine::getDisplayDensity()
698 {
699 static bool cached = false;
700 static float display_density;
701 if (!cached) {
702 display_density = calcDisplayDensity(get_video_driver());
703 cached = true;
704 }
705 return display_density;
706 }
707
708 #else
709
getDisplayDensity()710 float RenderingEngine::getDisplayDensity()
711 {
712 return g_settings->getFloat("screen_dpi") / 96.0;
713 }
714
715 #endif
716
getDisplaySize()717 v2u32 RenderingEngine::getDisplaySize()
718 {
719 IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
720
721 core::dimension2d<u32> deskres =
722 nulldevice->getVideoModeList()->getDesktopResolution();
723 nulldevice->drop();
724
725 return deskres;
726 }
727
728 #else // __ANDROID__
getDisplayDensity()729 float RenderingEngine::getDisplayDensity()
730 {
731 return porting::getDisplayDensity();
732 }
733
getDisplaySize()734 v2u32 RenderingEngine::getDisplaySize()
735 {
736 return porting::getDisplaySize();
737 }
738 #endif // __ANDROID__
739