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