src/client/renderingengine.cpp

   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 "hud.h"
  29 #include "localplayer.h"
  30 #include "camera.h"
  31 #include "minimap.h"
  32 #include "clientmap.h"
  33 #include "renderingengine.h"
  34 #include "inputhandler.h"
  35 #include "gettext.h"
  36
  37 #if !defined(_WIN32) && !defined(__APPLE__) && !defined(__ANDROID__) && !defined(SERVER)
  38 #define XORG_USED
  39 #endif
  40 #ifdef XORG_USED
  41 #include <X11/Xlib.h>
  42 #include <X11/Xutil.h>
  43 #endif
  44
  45 RenderingEngine *RenderingEngine::s_singleton = nullptr;
  46
  47 RenderingEngine::RenderingEngine(IEventReceiver *receiver)
  48 {
  49         sanity_check(!s_singleton);
  50
  51         // Resolution selection
  52         bool fullscreen = g_settings->getBool("fullscreen");
  53         u16 screen_w = g_settings->getU16("screen_w");
  54         u16 screen_h = g_settings->getU16("screen_h");
  55
  56         // bpp, fsaa, vsync
  57         bool vsync = g_settings->getBool("vsync");
  58         u16 bits = g_settings->getU16("fullscreen_bpp");
  59         u16 fsaa = g_settings->getU16("fsaa");
  60
  61         // stereo buffer required for pageflip stereo
  62         bool stereo_buffer = g_settings->get("3d_mode") == "pageflip";
  63
  64         // Determine driver
  65         video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
  66         const std::string &driverstring = g_settings->get("video_driver");
  67         std::vector<video::E_DRIVER_TYPE> drivers =
  68                         RenderingEngine::getSupportedVideoDrivers();
  69         u32 i;
  70         for (i = 0; i != drivers.size(); i++) {
  71                 if (!strcasecmp(driverstring.c_str(),
  72                                     RenderingEngine::getVideoDriverName(drivers[i]))) {
  73                         driverType = drivers[i];
  74                         break;
  75                 }
  76         }
  77         if (i == drivers.size()) {
  78                 errorstream << "Invalid video_driver specified; "
  79                                "defaulting to opengl"
  80                             << std::endl;
  81         }
  82
  83         SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
  84         params.DriverType = driverType;
  85         params.WindowSize = core::dimension2d<u32>(screen_w, screen_h);
  86         params.Bits = bits;
  87         params.AntiAlias = fsaa;
  88         params.Fullscreen = fullscreen;
  89         params.Stencilbuffer = false;
  90         params.Stereobuffer = stereo_buffer;
  91         params.Vsync = vsync;
  92         params.EventReceiver = receiver;
  93         params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
  94         params.ZBufferBits = 24;
  95 #ifdef __ANDROID__
  96         // clang-format off
  97         params.PrivateData = porting::app_global;
  98         params.OGLES2ShaderPath = std::string(porting::path_user + DIR_DELIM + "media" +
  99                 DIR_DELIM + "Shaders" + DIR_DELIM).c_str();
 100         // clang-format on
 101 #endif
 102
 103         m_device = createDeviceEx(params);
 104         s_singleton = this;
 105 }
 106
 107 RenderingEngine::~RenderingEngine()
 108 {
 109         m_device->drop();
 110         s_singleton = nullptr;
 111 }
 112
 113 v2u32 RenderingEngine::getWindowSize() const
 114 {
 115         return m_device->getVideoDriver()->getScreenSize();
 116 }
 117
 118 void RenderingEngine::setResizable(bool resize)
 119 {
 120         m_device->setResizable(resize);
 121 }
 122
 123 video::IVideoDriver *RenderingEngine::getVideoDriver()
 124 {
 125         return m_device->getVideoDriver();
 126 }
 127
 128 bool RenderingEngine::print_video_modes()
 129 {
 130         IrrlichtDevice *nulldevice;
 131
 132         bool vsync = g_settings->getBool("vsync");
 133         u16 fsaa = g_settings->getU16("fsaa");
 134         MyEventReceiver *receiver = new MyEventReceiver();
 135
 136         SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
 137         params.DriverType = video::EDT_NULL;
 138         params.WindowSize = core::dimension2d<u32>(640, 480);
 139         params.Bits = 24;
 140         params.AntiAlias = fsaa;
 141         params.Fullscreen = false;
 142         params.Stencilbuffer = false;
 143         params.Vsync = vsync;
 144         params.EventReceiver = receiver;
 145         params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
 146
 147         nulldevice = createDeviceEx(params);
 148
 149         if (!nulldevice) {
 150                 delete receiver;
 151                 return false;
 152         }
 153
 154         std::cout << _("Available video modes (WxHxD):") << std::endl;
 155
 156         video::IVideoModeList *videomode_list = nulldevice->getVideoModeList();
 157
 158         if (videomode_list != NULL) {
 159                 s32 videomode_count = videomode_list->getVideoModeCount();
 160                 core::dimension2d<u32> videomode_res;
 161                 s32 videomode_depth;
 162                 for (s32 i = 0; i < videomode_count; ++i) {
 163                         videomode_res = videomode_list->getVideoModeResolution(i);
 164                         videomode_depth = videomode_list->getVideoModeDepth(i);
 165                         std::cout << videomode_res.Width << "x" << videomode_res.Height
 166                                   << "x" << videomode_depth << std::endl;
 167                 }
 168
 169                 std::cout << _("Active video mode (WxHxD):") << std::endl;
 170                 videomode_res = videomode_list->getDesktopResolution();
 171                 videomode_depth = videomode_list->getDesktopDepth();
 172                 std::cout << videomode_res.Width << "x" << videomode_res.Height << "x"
 173                           << videomode_depth << std::endl;
 174         }
 175
 176         nulldevice->drop();
 177         delete receiver;
 178
 179         return videomode_list != NULL;
 180 }
 181
 182 void RenderingEngine::setXorgClassHint(
 183                 const video::SExposedVideoData &video_data, const std::string &name)
 184 {
 185 #ifdef XORG_USED
 186         if (video_data.OpenGLLinux.X11Display == NULL)
 187                 return;
 188
 189         XClassHint *classhint = XAllocClassHint();
 190         classhint->res_name = (char *)name.c_str();
 191         classhint->res_class = (char *)name.c_str();
 192
 193         XSetClassHint((Display *)video_data.OpenGLLinux.X11Display,
 194                         video_data.OpenGLLinux.X11Window, classhint);
 195         XFree(classhint);
 196 #endif
 197 }
 198
 199 bool RenderingEngine::setWindowIcon()
 200 {
 201 #if defined(XORG_USED)
 202 #if RUN_IN_PLACE
 203         return setXorgWindowIconFromPath(
 204                         porting::path_share + "/misc/" PROJECT_NAME "-xorg-icon-128.png");
 205 #else
 206         // We have semi-support for reading in-place data if we are
 207         // compiled with RUN_IN_PLACE. Don't break with this and
 208         // also try the path_share location.
 209         return setXorgWindowIconFromPath(
 210                                ICON_DIR "/hicolor/128x128/apps/" PROJECT_NAME ".png") ||
 211                setXorgWindowIconFromPath(porting::path_share + "/misc/" PROJECT_NAME
 212                                                                "-xorg-icon-128.png");
 213 #endif
 214 #elif defined(_WIN32)
 215         const video::SExposedVideoData exposedData =
 216                         m_device->getVideoDriver()->getExposedVideoData();
 217         HWND hWnd; // Window handle
 218
 219         switch (m_device->getVideoDriver()->getDriverType()) {
 220         case video::EDT_DIRECT3D8:
 221                 hWnd = reinterpret_cast<HWND>(exposedData.D3D8.HWnd);
 222                 break;
 223         case video::EDT_DIRECT3D9:
 224                 hWnd = reinterpret_cast<HWND>(exposedData.D3D9.HWnd);
 225                 break;
 226         case video::EDT_OPENGL:
 227                 hWnd = reinterpret_cast<HWND>(exposedData.OpenGLWin32.HWnd);
 228                 break;
 229         default:
 230                 return false;
 231         }
 232
 233         // Load the ICON from resource file
 234         const HICON hicon = LoadIcon(GetModuleHandle(NULL),
 235                         MAKEINTRESOURCE(130) // The ID of the ICON defined in
 236                                              // winresource.rc
 237         );
 238
 239         if (hicon) {
 240                 SendMessage(hWnd, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(hicon));
 241                 SendMessage(hWnd, WM_SETICON, ICON_SMALL,
 242                                 reinterpret_cast<LPARAM>(hicon));
 243                 return true;
 244         }
 245         return false;
 246 #else
 247         return false;
 248 #endif
 249 }
 250
 251 bool RenderingEngine::setXorgWindowIconFromPath(const std::string &icon_file)
 252 {
 253 #ifdef XORG_USED
 254
 255         video::IVideoDriver *v_driver = m_device->getVideoDriver();
 256
 257         video::IImageLoader *image_loader = NULL;
 258         u32 cnt = v_driver->getImageLoaderCount();
 259         for (u32 i = 0; i < cnt; i++) {
 260                 if (v_driver->getImageLoader(i)->isALoadableFileExtension(
 261                                     icon_file.c_str())) {
 262                         image_loader = v_driver->getImageLoader(i);
 263                         break;
 264                 }
 265         }
 266
 267         if (!image_loader) {
 268                 warningstream << "Could not find image loader for file '" << icon_file
 269                               << "'" << std::endl;
 270                 return false;
 271         }
 272
 273         io::IReadFile *icon_f =
 274                         m_device->getFileSystem()->createAndOpenFile(icon_file.c_str());
 275
 276         if (!icon_f) {
 277                 warningstream << "Could not load icon file '" << icon_file << "'"
 278                               << std::endl;
 279                 return false;
 280         }
 281
 282         video::IImage *img = image_loader->loadImage(icon_f);
 283
 284         if (!img) {
 285                 warningstream << "Could not load icon file '" << icon_file << "'"
 286                               << std::endl;
 287                 icon_f->drop();
 288                 return false;
 289         }
 290
 291         u32 height = img->getDimension().Height;
 292         u32 width = img->getDimension().Width;
 293
 294         size_t icon_buffer_len = 2 + height * width;
 295         long *icon_buffer = new long[icon_buffer_len];
 296
 297         icon_buffer[0] = width;
 298         icon_buffer[1] = height;
 299
 300         for (u32 x = 0; x < width; x++) {
 301                 for (u32 y = 0; y < height; y++) {
 302                         video::SColor col = img->getPixel(x, y);
 303                         long pixel_val = 0;
 304                         pixel_val |= (u8)col.getAlpha() << 24;
 305                         pixel_val |= (u8)col.getRed() << 16;
 306                         pixel_val |= (u8)col.getGreen() << 8;
 307                         pixel_val |= (u8)col.getBlue();
 308                         icon_buffer[2 + x + y * width] = pixel_val;
 309                 }
 310         }
 311
 312         img->drop();
 313         icon_f->drop();
 314
 315         const video::SExposedVideoData &video_data = v_driver->getExposedVideoData();
 316
 317         Display *x11_dpl = (Display *)video_data.OpenGLLinux.X11Display;
 318
 319         if (x11_dpl == NULL) {
 320                 warningstream << "Could not find x11 display for setting its icon."
 321                               << std::endl;
 322                 delete[] icon_buffer;
 323                 return false;
 324         }
 325
 326         Window x11_win = (Window)video_data.OpenGLLinux.X11Window;
 327
 328         Atom net_wm_icon = XInternAtom(x11_dpl, "_NET_WM_ICON", False);
 329         Atom cardinal = XInternAtom(x11_dpl, "CARDINAL", False);
 330         XChangeProperty(x11_dpl, x11_win, net_wm_icon, cardinal, 32, PropModeReplace,
 331                         (const unsigned char *)icon_buffer, icon_buffer_len);
 332
 333         delete[] icon_buffer;
 334
 335 #endif
 336         return true;
 337 }
 338
 339 /*
 340         Draws a screen with a single text on it.
 341         Text will be removed when the screen is drawn the next time.
 342         Additionally, a progressbar can be drawn when percent is set between 0 and 100.
 343 */
 344 void RenderingEngine::_draw_load_screen(const std::wstring &text,
 345                 gui::IGUIEnvironment *guienv, ITextureSource *tsrc, float dtime,
 346                 int percent, bool clouds)
 347 {
 348         v2u32 screensize = RenderingEngine::get_instance()->getWindowSize();
 349
 350         v2s32 textsize(g_fontengine->getTextWidth(text), g_fontengine->getLineHeight());
 351         v2s32 center(screensize.X / 2, screensize.Y / 2);
 352         core::rect<s32> textrect(center - textsize / 2, center + textsize / 2);
 353
 354         gui::IGUIStaticText *guitext =
 355                         guienv->addStaticText(text.c_str(), textrect, false, false);
 356         guitext->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_UPPERLEFT);
 357
 358         bool cloud_menu_background = clouds && g_settings->getBool("menu_clouds");
 359         if (cloud_menu_background) {
 360                 g_menuclouds->step(dtime * 3);
 361                 g_menuclouds->render();
 362                 get_video_driver()->beginScene(
 363                                 true, true, video::SColor(255, 140, 186, 250));
 364                 g_menucloudsmgr->drawAll();
 365         } else
 366                 get_video_driver()->beginScene(true, true, video::SColor(255, 0, 0, 0));
 367
 368         // draw progress bar
 369         if ((percent >= 0) && (percent <= 100)) {
 370                 video::ITexture *progress_img = tsrc->getTexture("progress_bar.png");
 371                 video::ITexture *progress_img_bg =
 372                                 tsrc->getTexture("progress_bar_bg.png");
 373
 374                 if (progress_img && progress_img_bg) {
 375 #ifndef __ANDROID__
 376                         const core::dimension2d<u32> &img_size =
 377                                         progress_img_bg->getSize();
 378                         u32 imgW = rangelim(img_size.Width, 200, 600);
 379                         u32 imgH = rangelim(img_size.Height, 24, 72);
 380 #else
 381                         const core::dimension2d<u32> img_size(256, 48);
 382                         float imgRatio = (float)img_size.Height / img_size.Width;
 383                         u32 imgW = screensize.X / 2.2f;
 384                         u32 imgH = floor(imgW * imgRatio);
 385 #endif
 386                         v2s32 img_pos((screensize.X - imgW) / 2,
 387                                         (screensize.Y - imgH) / 2);
 388
 389                         draw2DImageFilterScaled(get_video_driver(), progress_img_bg,
 390                                         core::rect<s32>(img_pos.X, img_pos.Y,
 391                                                         img_pos.X + imgW,
 392                                                         img_pos.Y + imgH),
 393                                         core::rect<s32>(0, 0, img_size.Width,
 394                                                         img_size.Height),
 395                                         0, 0, true);
 396
 397                         draw2DImageFilterScaled(get_video_driver(), progress_img,
 398                                         core::rect<s32>(img_pos.X, img_pos.Y,
 399                                                         img_pos.X + (percent * imgW) / 100,
 400                                                         img_pos.Y + imgH),
 401                                         core::rect<s32>(0, 0,
 402                                                         (percent * img_size.Width) / 100,
 403                                                         img_size.Height),
 404                                         0, 0, true);
 405                 }
 406         }
 407
 408         guienv->drawAll();
 409         get_video_driver()->endScene();
 410         guitext->remove();
 411 }
 412
 413 std::vector<core::vector3d<u32>> RenderingEngine::getSupportedVideoModes()
 414 {
 415         IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
 416         sanity_check(nulldevice);
 417
 418         std::vector<core::vector3d<u32>> mlist;
 419         video::IVideoModeList *modelist = nulldevice->getVideoModeList();
 420
 421         s32 num_modes = modelist->getVideoModeCount();
 422         for (s32 i = 0; i != num_modes; i++) {
 423                 core::dimension2d<u32> mode_res = modelist->getVideoModeResolution(i);
 424                 u32 mode_depth = (u32)modelist->getVideoModeDepth(i);
 425                 mlist.emplace_back(mode_res.Width, mode_res.Height, mode_depth);
 426         }
 427
 428         nulldevice->drop();
 429         return mlist;
 430 }
 431
 432 std::vector<irr::video::E_DRIVER_TYPE> RenderingEngine::getSupportedVideoDrivers()
 433 {
 434         std::vector<irr::video::E_DRIVER_TYPE> drivers;
 435
 436         for (int i = 0; i != irr::video::EDT_COUNT; i++) {
 437                 if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE)i))
 438                         drivers.push_back((irr::video::E_DRIVER_TYPE)i);
 439         }
 440
 441         return drivers;
 442 }
 443
 444 void RenderingEngine::_draw_scene(Camera *camera, Client *client, LocalPlayer *player,
 445                 Hud *hud, Minimap *mapper, gui::IGUIEnvironment *guienv,
 446                 const v2u32 &screensize, const video::SColor &skycolor, bool show_hud,
 447                 bool show_minimap)
 448 {
 449         bool draw_wield_tool =
 450                         (show_hud && (player->hud_flags & HUD_FLAG_WIELDITEM_VISIBLE) &&
 451                                         camera->getCameraMode() < CAMERA_MODE_THIRD);
 452
 453         bool draw_crosshair = ((player->hud_flags & HUD_FLAG_CROSSHAIR_VISIBLE) &&
 454                                (camera->getCameraMode() != CAMERA_MODE_THIRD_FRONT));
 455
 456 #ifdef HAVE_TOUCHSCREENGUI
 457         try {
 458                 draw_crosshair = !g_settings->getBool("touchtarget");
 459         } catch (SettingNotFoundException) {
 460         }
 461 #endif
 462
 463         const std::string &draw_mode = g_settings->get("3d_mode");
 464
 465         if (draw_mode == "anaglyph") {
 466                 draw_anaglyph_3d_mode(
 467                                 camera, show_hud, hud, draw_wield_tool, client, guienv);
 468                 draw_crosshair = false;
 469         } else if (draw_mode == "interlaced") {
 470                 draw_interlaced_3d_mode(camera, show_hud, hud, screensize,
 471                                 draw_wield_tool, client, guienv, skycolor);
 472                 draw_crosshair = false;
 473         } else if (draw_mode == "sidebyside") {
 474                 draw_sidebyside_3d_mode(camera, show_hud, hud, screensize,
 475                                 draw_wield_tool, client, guienv, skycolor);
 476                 show_hud = false;
 477         } else if (draw_mode == "topbottom") {
 478                 draw_top_bottom_3d_mode(camera, show_hud, hud, screensize,
 479                                 draw_wield_tool, client, guienv, skycolor);
 480                 show_hud = false;
 481         } else if (draw_mode == "pageflip") {
 482                 draw_pageflip_3d_mode(camera, show_hud, hud, screensize, draw_wield_tool,
 483                                 client, guienv, skycolor);
 484                 draw_crosshair = false;
 485                 show_hud = false;
 486         } else {
 487                 draw_plain(camera, show_hud, hud, screensize, draw_wield_tool, client,
 488                                 guienv, skycolor);
 489         }
 490
 491         /*
 492                 Post effects
 493         */
 494         client->getEnv().getClientMap().renderPostFx(camera->getCameraMode());
 495
 496         // TODO how to make those 3d too
 497         if (show_hud) {
 498                 if (draw_crosshair)
 499                         hud->drawCrosshair();
 500
 501                 hud->drawHotbar(client->getPlayerItem());
 502                 hud->drawLuaElements(camera->getOffset());
 503                 camera->drawNametags();
 504
 505                 if (mapper && show_minimap)
 506                         mapper->drawMinimap();
 507         }
 508
 509         guienv->drawAll();
 510 }
 511
 512 void RenderingEngine::draw_anaglyph_3d_mode(Camera *camera, bool show_hud, Hud *hud,
 513                 bool draw_wield_tool, Client *client, gui::IGUIEnvironment *guienv)
 514 {
 515
 516         /* preserve old setup*/
 517         irr::core::vector3df oldPosition = camera->getCameraNode()->getPosition();
 518         irr::core::vector3df oldTarget = camera->getCameraNode()->getTarget();
 519
 520         irr::core::matrix4 startMatrix =
 521                         camera->getCameraNode()->getAbsoluteTransformation();
 522         irr::core::vector3df focusPoint =
 523                         (camera->getCameraNode()->getTarget() -
 524                                         camera->getCameraNode()->getAbsolutePosition())
 525                                         .setLength(1) +
 526                         camera->getCameraNode()->getAbsolutePosition();
 527
 528         // Left eye...
 529         irr::core::vector3df leftEye;
 530         irr::core::matrix4 leftMove;
 531         leftMove.setTranslation(irr::core::vector3df(
 532                         -g_settings->getFloat("3d_paralax_strength"), 0.0f, 0.0f));
 533         leftEye = (startMatrix * leftMove).getTranslation();
 534
 535         // clear the depth buffer, and color
 536         getVideoDriver()->beginScene(true, true, irr::video::SColor(0, 200, 200, 255));
 537         getVideoDriver()->getOverrideMaterial().Material.ColorMask = irr::video::ECP_RED;
 538         getVideoDriver()->getOverrideMaterial().EnableFlags = irr::video::EMF_COLOR_MASK;
 539         getVideoDriver()->getOverrideMaterial().EnablePasses =
 540                         irr::scene::ESNRP_SKY_BOX + irr::scene::ESNRP_SOLID +
 541                         irr::scene::ESNRP_TRANSPARENT +
 542                         irr::scene::ESNRP_TRANSPARENT_EFFECT + irr::scene::ESNRP_SHADOW;
 543         camera->getCameraNode()->setPosition(leftEye);
 544         camera->getCameraNode()->setTarget(focusPoint);
 545         get_scene_manager()->drawAll();
 546         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 547         if (show_hud) {
 548                 hud->drawSelectionMesh();
 549                 if (draw_wield_tool)
 550                         camera->drawWieldedTool(&leftMove);
 551         }
 552
 553         guienv->drawAll();
 554
 555         // Right eye...
 556         irr::core::vector3df rightEye;
 557         irr::core::matrix4 rightMove;
 558         rightMove.setTranslation(irr::core::vector3df(
 559                         g_settings->getFloat("3d_paralax_strength"), 0.0f, 0.0f));
 560         rightEye = (startMatrix * rightMove).getTranslation();
 561
 562         // clear the depth buffer
 563         getVideoDriver()->clearZBuffer();
 564         getVideoDriver()->getOverrideMaterial().Material.ColorMask =
 565                         irr::video::ECP_GREEN + irr::video::ECP_BLUE;
 566         getVideoDriver()->getOverrideMaterial().EnableFlags = irr::video::EMF_COLOR_MASK;
 567         getVideoDriver()->getOverrideMaterial().EnablePasses =
 568                         irr::scene::ESNRP_SKY_BOX + irr::scene::ESNRP_SOLID +
 569                         irr::scene::ESNRP_TRANSPARENT +
 570                         irr::scene::ESNRP_TRANSPARENT_EFFECT + irr::scene::ESNRP_SHADOW;
 571         camera->getCameraNode()->setPosition(rightEye);
 572         camera->getCameraNode()->setTarget(focusPoint);
 573         get_scene_manager()->drawAll();
 574         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 575         if (show_hud) {
 576                 hud->drawSelectionMesh();
 577                 if (draw_wield_tool)
 578                         camera->drawWieldedTool(&rightMove);
 579         }
 580
 581         guienv->drawAll();
 582
 583         getVideoDriver()->getOverrideMaterial().Material.ColorMask = irr::video::ECP_ALL;
 584         getVideoDriver()->getOverrideMaterial().EnableFlags = 0;
 585         getVideoDriver()->getOverrideMaterial().EnablePasses = 0;
 586         camera->getCameraNode()->setPosition(oldPosition);
 587         camera->getCameraNode()->setTarget(oldTarget);
 588 }
 589
 590 void RenderingEngine::init_texture(
 591                 const v2u32 &screensize, video::ITexture **texture, const char *name)
 592 {
 593         if (*texture) {
 594                 getVideoDriver()->removeTexture(*texture);
 595         }
 596         *texture = getVideoDriver()->addRenderTargetTexture(
 597                         core::dimension2d<u32>(screensize.X, screensize.Y), name,
 598                         irr::video::ECF_A8R8G8B8);
 599 }
 600
 601 video::ITexture *RenderingEngine::draw_image(const v2u32 &screensize, parallax_sign psign,
 602                 const irr::core::matrix4 &startMatrix,
 603                 const irr::core::vector3df &focusPoint, bool show_hud, Camera *camera,
 604                 Hud *hud, bool draw_wield_tool, Client *client,
 605                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 606 {
 607         static video::ITexture *images[2] = {NULL, NULL};
 608         static v2u32 last_screensize = v2u32(0, 0);
 609
 610         video::ITexture *image = NULL;
 611
 612         if (screensize != last_screensize) {
 613                 init_texture(screensize, &images[1], "mt_drawimage_img1");
 614                 init_texture(screensize, &images[0], "mt_drawimage_img2");
 615                 last_screensize = screensize;
 616         }
 617
 618         if (psign == RIGHT)
 619                 image = images[1];
 620         else
 621                 image = images[0];
 622
 623         getVideoDriver()->setRenderTarget(image, true, true,
 624                         irr::video::SColor(255, skycolor.getRed(), skycolor.getGreen(),
 625                                         skycolor.getBlue()));
 626
 627         irr::core::vector3df eye_pos;
 628         irr::core::matrix4 movement;
 629         movement.setTranslation(irr::core::vector3df(
 630                         (int)psign * g_settings->getFloat("3d_paralax_strength"), 0.0f,
 631                         0.0f));
 632         eye_pos = (startMatrix * movement).getTranslation();
 633
 634         // clear the depth buffer
 635         getVideoDriver()->clearZBuffer();
 636         camera->getCameraNode()->setPosition(eye_pos);
 637         camera->getCameraNode()->setTarget(focusPoint);
 638         get_scene_manager()->drawAll();
 639
 640         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 641
 642         if (show_hud) {
 643                 hud->drawSelectionMesh();
 644                 if (draw_wield_tool)
 645                         camera->drawWieldedTool(&movement);
 646         }
 647
 648         guienv->drawAll();
 649
 650         /* switch back to real renderer */
 651         getVideoDriver()->setRenderTarget(0, true, true,
 652                         irr::video::SColor(0, skycolor.getRed(), skycolor.getGreen(),
 653                                         skycolor.getBlue()));
 654
 655         return image;
 656 }
 657
 658 video::ITexture *RenderingEngine::draw_hud(const v2u32 &screensize, bool show_hud,
 659                 Hud *hud, Client *client, bool draw_crosshair,
 660                 const video::SColor &skycolor, gui::IGUIEnvironment *guienv,
 661                 Camera *camera)
 662 {
 663         static video::ITexture *image = nullptr;
 664         init_texture(screensize, &image, "mt_drawimage_hud");
 665         getVideoDriver()->setRenderTarget(
 666                         image, true, true, irr::video::SColor(255, 0, 0, 0));
 667
 668         if (show_hud) {
 669                 if (draw_crosshair)
 670                         hud->drawCrosshair();
 671                 hud->drawHotbar(client->getPlayerItem());
 672                 hud->drawLuaElements(camera->getOffset());
 673                 camera->drawNametags();
 674                 guienv->drawAll();
 675         }
 676
 677         getVideoDriver()->setRenderTarget(0, true, true,
 678                         irr::video::SColor(0, skycolor.getRed(), skycolor.getGreen(),
 679                                         skycolor.getBlue()));
 680
 681         return image;
 682 }
 683
 684 void RenderingEngine::draw_interlaced_3d_mode(Camera *camera, bool show_hud, Hud *hud,
 685                 const v2u32 &screensize, bool draw_wield_tool, Client *client,
 686                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 687 {
 688         /* save current info */
 689         irr::core::vector3df oldPosition = camera->getCameraNode()->getPosition();
 690         irr::core::vector3df oldTarget = camera->getCameraNode()->getTarget();
 691         irr::core::matrix4 startMatrix =
 692                         camera->getCameraNode()->getAbsoluteTransformation();
 693         irr::core::vector3df focusPoint =
 694                         (camera->getCameraNode()->getTarget() -
 695                                         camera->getCameraNode()->getAbsolutePosition())
 696                                         .setLength(1) +
 697                         camera->getCameraNode()->getAbsolutePosition();
 698
 699         /* create left view */
 700         video::ITexture *left_image = draw_image(screensize, LEFT, startMatrix,
 701                         focusPoint, show_hud, camera, hud, draw_wield_tool, client,
 702                         guienv, skycolor);
 703
 704         // Right eye...
 705         irr::core::vector3df rightEye;
 706         irr::core::matrix4 rightMove;
 707         rightMove.setTranslation(irr::core::vector3df(
 708                         g_settings->getFloat("3d_paralax_strength"), 0.0f, 0.0f));
 709         rightEye = (startMatrix * rightMove).getTranslation();
 710
 711         // clear the depth buffer
 712         getVideoDriver()->clearZBuffer();
 713         camera->getCameraNode()->setPosition(rightEye);
 714         camera->getCameraNode()->setTarget(focusPoint);
 715         get_scene_manager()->drawAll();
 716
 717         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 718
 719         if (show_hud) {
 720                 hud->drawSelectionMesh();
 721                 if (draw_wield_tool)
 722                         camera->drawWieldedTool(&rightMove);
 723         }
 724         guienv->drawAll();
 725
 726         for (unsigned int i = 0; i < screensize.Y; i += 2) {
 727 #if (IRRLICHT_VERSION_MAJOR >= 1) && (IRRLICHT_VERSION_MINOR >= 8)
 728                 getVideoDriver()->draw2DImage(left_image,
 729                                 irr::core::position2d<s32>(0, i),
 730 #else
 731                 getVideoDriver()->draw2DImage(left_image,
 732                                 irr::core::position2d<s32>(0, screensize.Y - i),
 733 #endif
 734                                 irr::core::rect<s32>(0, i, screensize.X, i + 1), 0,
 735                                 irr::video::SColor(255, 255, 255, 255), false);
 736         }
 737
 738         /* cleanup */
 739         camera->getCameraNode()->setPosition(oldPosition);
 740         camera->getCameraNode()->setTarget(oldTarget);
 741 }
 742
 743 void RenderingEngine::draw_sidebyside_3d_mode(Camera *camera, bool show_hud, Hud *hud,
 744                 const v2u32 &screensize, bool draw_wield_tool, Client *client,
 745                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 746 {
 747         /* save current info */
 748         irr::core::vector3df oldPosition = camera->getCameraNode()->getPosition();
 749         irr::core::vector3df oldTarget = camera->getCameraNode()->getTarget();
 750         irr::core::matrix4 startMatrix =
 751                         camera->getCameraNode()->getAbsoluteTransformation();
 752         irr::core::vector3df focusPoint =
 753                         (camera->getCameraNode()->getTarget() -
 754                                         camera->getCameraNode()->getAbsolutePosition())
 755                                         .setLength(1) +
 756                         camera->getCameraNode()->getAbsolutePosition();
 757
 758         /* create left view */
 759         video::ITexture *left_image = draw_image(screensize, LEFT, startMatrix,
 760                         focusPoint, show_hud, camera, hud, draw_wield_tool, client,
 761                         guienv, skycolor);
 762
 763         /* create right view */
 764         video::ITexture *right_image = draw_image(screensize, RIGHT, startMatrix,
 765                         focusPoint, show_hud, camera, hud, draw_wield_tool, client,
 766                         guienv, skycolor);
 767
 768         /* create hud overlay */
 769         video::ITexture *hudtexture = draw_hud(screensize, show_hud, hud, client, false,
 770                         skycolor, guienv, camera);
 771         getVideoDriver()->makeColorKeyTexture(
 772                         hudtexture, irr::video::SColor(255, 0, 0, 0));
 773         // makeColorKeyTexture mirrors texture so we do it twice to get it right again
 774         getVideoDriver()->makeColorKeyTexture(
 775                         hudtexture, irr::video::SColor(255, 0, 0, 0));
 776
 777         draw2DImageFilterScaled(getVideoDriver(), left_image,
 778                         irr::core::rect<s32>(0, 0, screensize.X / 2, screensize.Y),
 779                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 780                         false);
 781
 782         draw2DImageFilterScaled(getVideoDriver(), hudtexture,
 783                         irr::core::rect<s32>(0, 0, screensize.X / 2, screensize.Y),
 784                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 785                         true);
 786
 787         draw2DImageFilterScaled(getVideoDriver(), right_image,
 788                         irr::core::rect<s32>(
 789                                         screensize.X / 2, 0, screensize.X, screensize.Y),
 790                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 791                         false);
 792
 793         draw2DImageFilterScaled(getVideoDriver(), hudtexture,
 794                         irr::core::rect<s32>(
 795                                         screensize.X / 2, 0, screensize.X, screensize.Y),
 796                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 797                         true);
 798
 799         left_image = nullptr;
 800         right_image = nullptr;
 801
 802         /* cleanup */
 803         camera->getCameraNode()->setPosition(oldPosition);
 804         camera->getCameraNode()->setTarget(oldTarget);
 805 }
 806
 807 void RenderingEngine::draw_top_bottom_3d_mode(Camera *camera, bool show_hud, Hud *hud,
 808                 const v2u32 &screensize, bool draw_wield_tool, Client *client,
 809                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 810 {
 811         /* save current info */
 812         irr::core::vector3df oldPosition = camera->getCameraNode()->getPosition();
 813         irr::core::vector3df oldTarget = camera->getCameraNode()->getTarget();
 814         irr::core::matrix4 startMatrix =
 815                         camera->getCameraNode()->getAbsoluteTransformation();
 816         irr::core::vector3df focusPoint =
 817                         (camera->getCameraNode()->getTarget() -
 818                                         camera->getCameraNode()->getAbsolutePosition())
 819                                         .setLength(1) +
 820                         camera->getCameraNode()->getAbsolutePosition();
 821
 822         /* create left view */
 823         video::ITexture *left_image = draw_image(screensize, LEFT, startMatrix,
 824                         focusPoint, show_hud, camera, hud, draw_wield_tool, client,
 825                         guienv, skycolor);
 826
 827         /* create right view */
 828         video::ITexture *right_image = draw_image(screensize, RIGHT, startMatrix,
 829                         focusPoint, show_hud, camera, hud, draw_wield_tool, client,
 830                         guienv, skycolor);
 831
 832         /* create hud overlay */
 833         video::ITexture *hudtexture = draw_hud(screensize, show_hud, hud, client, false,
 834                         skycolor, guienv, camera);
 835         getVideoDriver()->makeColorKeyTexture(
 836                         hudtexture, irr::video::SColor(255, 0, 0, 0));
 837         // makeColorKeyTexture mirrors texture so we do it twice to get it right again
 838         getVideoDriver()->makeColorKeyTexture(
 839                         hudtexture, irr::video::SColor(255, 0, 0, 0));
 840
 841         draw2DImageFilterScaled(getVideoDriver(), left_image,
 842                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y / 2),
 843                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 844                         false);
 845
 846         draw2DImageFilterScaled(getVideoDriver(), hudtexture,
 847                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y / 2),
 848                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 849                         true);
 850
 851         draw2DImageFilterScaled(getVideoDriver(), right_image,
 852                         irr::core::rect<s32>(
 853                                         0, screensize.Y / 2, screensize.X, screensize.Y),
 854                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 855                         false);
 856
 857         draw2DImageFilterScaled(getVideoDriver(), hudtexture,
 858                         irr::core::rect<s32>(
 859                                         0, screensize.Y / 2, screensize.X, screensize.Y),
 860                         irr::core::rect<s32>(0, 0, screensize.X, screensize.Y), 0, 0,
 861                         true);
 862
 863         left_image = NULL;
 864         right_image = NULL;
 865
 866         /* cleanup */
 867         camera->getCameraNode()->setPosition(oldPosition);
 868         camera->getCameraNode()->setTarget(oldTarget);
 869 }
 870
 871 void RenderingEngine::draw_pageflip_3d_mode(Camera *camera, bool show_hud, Hud *hud,
 872                 const v2u32 &screensize, bool draw_wield_tool, Client *client,
 873                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 874 {
 875 #if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR > 8
 876         errorstream << "Pageflip 3D mode is not supported"
 877                     << " with your Irrlicht version!" << std::endl;
 878 #else
 879         /* preserve old setup*/
 880         irr::core::vector3df oldPosition = camera->getCameraNode()->getPosition();
 881         irr::core::vector3df oldTarget = camera->getCameraNode()->getTarget();
 882
 883         irr::core::matrix4 startMatrix =
 884                         camera->getCameraNode()->getAbsoluteTransformation();
 885         irr::core::vector3df focusPoint =
 886                         (camera->getCameraNode()->getTarget() -
 887                                         camera->getCameraNode()->getAbsolutePosition())
 888                                         .setLength(1) +
 889                         camera->getCameraNode()->getAbsolutePosition();
 890
 891         // Left eye...
 892         getVideoDriver()->setRenderTarget(irr::video::ERT_STEREO_LEFT_BUFFER);
 893
 894         irr::core::vector3df leftEye;
 895         irr::core::matrix4 leftMove;
 896         leftMove.setTranslation(irr::core::vector3df(
 897                         -g_settings->getFloat("3d_paralax_strength"), 0.0f, 0.0f));
 898         leftEye = (startMatrix * leftMove).getTranslation();
 899
 900         // clear the depth buffer, and color
 901         getVideoDriver()->beginScene(true, true, irr::video::SColor(200, 200, 200, 255));
 902         camera->getCameraNode()->setPosition(leftEye);
 903         camera->getCameraNode()->setTarget(focusPoint);
 904         get_scene_manager()->drawAll();
 905         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 906
 907         if (show_hud) {
 908                 hud->drawSelectionMesh();
 909                 if (draw_wield_tool)
 910                         camera->drawWieldedTool(&leftMove);
 911                 hud->drawHotbar(client->getPlayerItem());
 912                 hud->drawLuaElements(camera->getOffset());
 913                 camera->drawNametags();
 914         }
 915
 916         guienv->drawAll();
 917
 918         // Right eye...
 919         getVideoDriver()->setRenderTarget(irr::video::ERT_STEREO_RIGHT_BUFFER);
 920
 921         irr::core::vector3df rightEye;
 922         irr::core::matrix4 rightMove;
 923         rightMove.setTranslation(irr::core::vector3df(
 924                         g_settings->getFloat("3d_paralax_strength"), 0.0f, 0.0f));
 925         rightEye = (startMatrix * rightMove).getTranslation();
 926
 927         // clear the depth buffer, and color
 928         getVideoDriver()->beginScene(true, true, irr::video::SColor(200, 200, 200, 255));
 929         camera->getCameraNode()->setPosition(rightEye);
 930         camera->getCameraNode()->setTarget(focusPoint);
 931         get_scene_manager()->drawAll();
 932         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 933
 934         if (show_hud) {
 935                 hud->drawSelectionMesh();
 936                 if (draw_wield_tool)
 937                         camera->drawWieldedTool(&rightMove);
 938                 hud->drawHotbar(client->getPlayerItem());
 939                 hud->drawLuaElements(camera->getOffset());
 940                 camera->drawNametags();
 941         }
 942
 943         guienv->drawAll();
 944
 945         camera->getCameraNode()->setPosition(oldPosition);
 946         camera->getCameraNode()->setTarget(oldTarget);
 947 #endif
 948 }
 949
 950 // returns (size / coef), rounded upwards
 951 inline int scaledown(int coef, int size)
 952 {
 953         return (size + coef - 1) / coef;
 954 }
 955
 956 void RenderingEngine::draw_plain(Camera *camera, bool show_hud, Hud *hud,
 957                 const v2u32 &screensize, bool draw_wield_tool, Client *client,
 958                 gui::IGUIEnvironment *guienv, const video::SColor &skycolor)
 959 {
 960         // Undersampling-specific stuff
 961         static video::ITexture *image = NULL;
 962         static v2u32 last_pixelated_size = v2u32(0, 0);
 963         static thread_local int undersampling = g_settings->getU16("undersampling");
 964         v2u32 pixelated_size;
 965         v2u32 dest_size;
 966         if (undersampling > 0) {
 967                 pixelated_size = v2u32(scaledown(undersampling, screensize.X),
 968                                 scaledown(undersampling, screensize.Y));
 969                 dest_size = v2u32(undersampling * pixelated_size.X,
 970                                 undersampling * pixelated_size.Y);
 971                 if (pixelated_size != last_pixelated_size) {
 972                         init_texture(pixelated_size, &image, "mt_drawimage_img1");
 973                         last_pixelated_size = pixelated_size;
 974                 }
 975                 getVideoDriver()->setRenderTarget(image, true, true, skycolor);
 976         }
 977
 978         // Render
 979         get_scene_manager()->drawAll();
 980         getVideoDriver()->setTransform(video::ETS_WORLD, core::IdentityMatrix);
 981         if (show_hud) {
 982                 hud->drawSelectionMesh();
 983                 if (draw_wield_tool) {
 984                         camera->drawWieldedTool();
 985                 }
 986         }
 987
 988         // Upscale lowres render
 989         if (undersampling > 0) {
 990                 getVideoDriver()->setRenderTarget(0, true, true);
 991                 getVideoDriver()->draw2DImage(image,
 992                                 irr::core::rect<s32>(0, 0, dest_size.X, dest_size.Y),
 993                                 irr::core::rect<s32>(0, 0, pixelated_size.X,
 994                                                 pixelated_size.Y));
 995         }
 996 }
 997
 998 const char *RenderingEngine::getVideoDriverName(irr::video::E_DRIVER_TYPE type)
 999 {
1000         static const char *driver_ids[] = {
1001                         "null",
1002                         "software",
1003                         "burningsvideo",
1004                         "direct3d8",
1005                         "direct3d9",
1006                         "opengl",
1007                         "ogles1",
1008                         "ogles2",
1009         };
1010
1011         return driver_ids[type];
1012 }
1013
1014 const char *RenderingEngine::getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
1015 {
1016         static const char *driver_names[] = {
1017                         "NULL Driver",
1018                         "Software Renderer",
1019                         "Burning's Video",
1020                         "Direct3D 8",
1021                         "Direct3D 9",
1022                         "OpenGL",
1023                         "OpenGL ES1",
1024                         "OpenGL ES2",
1025         };
1026
1027         return driver_names[type];
1028 }
1029
1030 #ifndef __ANDROID__
1031 #ifdef XORG_USED
1032
1033 static float calcDisplayDensity()
1034 {
1035         const char *current_display = getenv("DISPLAY");
1036
1037         if (current_display != NULL) {
1038                 Display *x11display = XOpenDisplay(current_display);
1039
1040                 if (x11display != NULL) {
1041                         /* try x direct */
1042                         float dpi_height = floor(
1043                                         DisplayHeight(x11display, 0) /
1044                                                         (DisplayHeightMM(x11display, 0) *
1045                                                                         0.039370) +
1046                                         0.5);
1047                         float dpi_width = floor(
1048                                         DisplayWidth(x11display, 0) /
1049                                                         (DisplayWidthMM(x11display, 0) *
1050                                                                         0.039370) +
1051                                         0.5);
1052
1053                         XCloseDisplay(x11display);
1054
1055                         return std::max(dpi_height, dpi_width) / 96.0;
1056                 }
1057         }
1058
1059         /* return manually specified dpi */
1060         return g_settings->getFloat("screen_dpi") / 96.0;
1061 }
1062
1063 float RenderingEngine::getDisplayDensity()
1064 {
1065         static float cached_display_density = calcDisplayDensity();
1066         return cached_display_density;
1067 }
1068
1069 #else  // XORG_USED
1070 float RenderingEngine::getDisplayDensity()
1071 {
1072         return g_settings->getFloat("screen_dpi") / 96.0;
1073 }
1074 #endif // XORG_USED
1075
1076 v2u32 RenderingEngine::getDisplaySize()
1077 {
1078         IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
1079
1080         core::dimension2d<u32> deskres =
1081                         nulldevice->getVideoModeList()->getDesktopResolution();
1082         nulldevice->drop();
1083
1084         return deskres;
1085 }
1086 #endif // __ANDROID__