games/minimal/mods/default/textures/default_rail_curved.png

/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <IrrlichtDevice.h>
#include <irrlicht.h>
#include "fontengine.h"
#include "client.h"
#include "clouds.h"
#include "util/numeric.h"
#include "guiscalingfilter.h"
#include "localplayer.h"
#include "client/hud.h"
#include "camera.h"
#include "minimap.h"
#include "clientmap.h"
#include "renderingengine.h"
#include "render/core.h"
#include "render/factory.h"
#include "inputhandler.h"
#include "gettext.h"
#include "../gui/guiSkin.h"

#if !defined(_WIN32) && !defined(__APPLE__) && !defined(__ANDROID__) && \
		!defined(SERVER) && !defined(__HAIKU__)
#define XORG_USED
#endif
#ifdef XORG_USED
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#endif

#ifdef _WIN32
#include <windows.h>
#include <winuser.h>
#endif

#if ENABLE_GLES
#include "filesys.h"
#endif

RenderingEngine *RenderingEngine::s_singleton = nullptr;


static gui::GUISkin *createSkin(gui::IGUIEnvironment *environment,
		gui::EGUI_SKIN_TYPE type, video::IVideoDriver *driver)
{
	gui::GUISkin *skin = new gui::GUISkin(type, driver);

	gui::IGUIFont *builtinfont = environment->getBuiltInFont();
	gui::IGUIFontBitmap *bitfont = nullptr;
	if (builtinfont && builtinfont->getType() == gui::EGFT_BITMAP)
		bitfont = (gui::IGUIFontBitmap*)builtinfont;

	gui::IGUISpriteBank *bank = 0;
	skin->setFont(builtinfont);

	if (bitfont)
		bank = bitfont->getSpriteBank();

	skin->setSpriteBank(bank);

	return skin;
}


RenderingEngine::RenderingEngine(IEventReceiver *receiver)
{
	sanity_check(!s_singleton);

	// Resolution selection
	bool fullscreen = g_settings->getBool("fullscreen");
	u16 screen_w = g_settings->getU16("screen_w");
	u16 screen_h = g_settings->getU16("screen_h");

	// bpp, fsaa, vsync
	bool vsync = g_settings->getBool("vsync");
	u16 bits = g_settings->getU16("fullscreen_bpp");
	u16 fsaa = g_settings->getU16("fsaa");

	// stereo buffer required for pageflip stereo
	bool stereo_buffer = g_settings->get("3d_mode") == "pageflip";

	// Determine driver
	video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
	const std::string &driverstring = g_settings->get("video_driver");
	std::vector<video::E_DRIVER_TYPE> drivers =
			RenderingEngine::getSupportedVideoDrivers();
	u32 i;
	for (i = 0; i != drivers.size(); i++) {
		if (!strcasecmp(driverstring.c_str(),
				RenderingEngine::getVideoDriverName(drivers[i]))) {
			driverType = drivers[i];
			break;
		}
	}
	if (i == drivers.size()) {
		errorstream << "Invalid video_driver specified; "
			       "defaulting to opengl"
			    << std::endl;
	}

	SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
	if (g_logger.getTraceEnabled())
		params.LoggingLevel = irr::ELL_DEBUG;
	params.DriverType = driverType;
	params.WindowSize = core::dimension2d<u32>(screen_w, screen_h);
	params.Bits = bits;
	params.AntiAlias = fsaa;
	params.Fullscreen = fullscreen;
	params.Stencilbuffer = false;
	params.Stereobuffer = stereo_buffer;
	params.Vsync = vsync;
	params.EventReceiver = receiver;
	params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
	params.ZBufferBits = 24;
#ifdef __ANDROID__
	params.PrivateData = porting::app_global;
#endif
#if ENABLE_GLES
	// there is no standardized path for these on desktop
	std::string rel_path = std::string("client") + DIR_DELIM
			+ "shaders" + DIR_DELIM + "Irrlicht";
	params.OGLES2ShaderPath = (porting::path_share + DIR_DELIM + rel_path + DIR_DELIM).c_str();
#endif

	m_device = createDeviceEx(params);
	driver = m_device->getVideoDriver();

	s_singleton = this;

	auto skin = createSkin(m_device->getGUIEnvironment(),
			gui::EGST_WINDOWS_METALLIC, driver);
	m_device->getGUIEnvironment()->setSkin(skin);
	skin->drop();
}

RenderingEngine::~RenderingEngine()
{
	core.reset();
	m_device->closeDevice();
	s_singleton = nullptr;
}

v2u32 RenderingEngine::_getWindowSize() const
{
	if (core)
		return core->getVirtualSize();
	return m_device->getVideoDriver()->getScreenSize();
}

void RenderingEngine::setResizable(bool resize)
{
	m_device->setResizable(resize);
}

bool RenderingEngine::print_video_modes()
{
	IrrlichtDevice *nulldevice;

	bool vsync = g_settings->getBool("vsync");
	u16 fsaa = g_settings->getU16("fsaa");
	MyEventReceiver *receiver = new MyEventReceiver();

	SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
	params.DriverType = video::EDT_NULL;
	params.WindowSize = core::dimension2d<u32>(640, 480);
	params.Bits = 24;
	params.AntiAlias = fsaa;
	params.Fullscreen = false;
	params.Stencilbuffer = false;
	params.Vsync = vsync;
	params.EventReceiver = receiver;
	params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");

	nulldevice = createDeviceEx(params);

	if (!nulldevice) {
		delete receiver;
		return false;
	}

	std::cout << _("Available video modes (WxHxD):") << std::endl;

	video::IVideoModeList *videomode_list = nulldevice->getVideoModeList();

	if (videomode_list != NULL) {
		s32 videomode_count = videomode_list->getVideoModeCount();
		core::dimension2d<u32> videomode_res;
		s32 videomode_depth;
		for (s32 i = 0; i < videomode_count; ++i) {
			videomode_res = videomode_list->getVideoModeResolution(i);
			videomode_depth = videomode_list->getVideoModeDepth(i);
			std::cout << videomode_res.Width << "x" << videomode_res.Height
				  << "x" << videomode_depth << std::endl;
		}

		std::cout << _("Active video mode (WxHxD):") << std::endl;
		videomode_res = videomode_list->getDesktopResolution();
		videomode_depth = videomode_list->getDesktopDepth();
		std::cout << videomode_res.Width << "x" << videomode_res.Height << "x"
			  << videomode_depth << std::endl;
	}

	nulldevice->drop();
	delete receiver;

	return videomode_list != NULL;
}

void RenderingEngine::removeMesh(const scene::IMesh* mesh)
{
	m_device->getSceneManager()->getMeshCache()->removeMesh(mesh);
}

void RenderingEngine::cleanupMeshCache()
{
	auto mesh_cache = m_device->getSceneManager()->getMeshCache();
	while (mesh_cache->getMeshCount() != 0) {
		if (scene::IAnimatedMesh *mesh = mesh_cache->getMeshByIndex(0))
			mesh_cache->removeMesh(mesh);
	}
}

bool RenderingEngine::setupTopLevelWindow(const std::string &name)
{
	// FIXME: It would make more sense for there to be a switch of some
	// sort here that would call the correct toplevel setup methods for
	// the environment Minetest is running in.

	/* Setting Xorg properties for the top level window */
	setupTopLevelXorgWindow(name);

	/* Setting general properties for the top level window */
	verbosestream << "Client: Configuring general top level"
		<< " window properties"
		<< std::endl;
	bool result = setWindowIcon();

	return result;
}

void RenderingEngine::setupTopLevelXorgWindow(const std::string &name)
{
#ifdef XORG_USED
	const video::SExposedVideoData exposedData = driver->getExposedVideoData();

	Display *x11_dpl = reinterpret_cast<Display *>(exposedData.OpenGLLinux.X11Display);
	if (x11_dpl == NULL) {
		warningstream << "Client: Could not find X11 Display in ExposedVideoData"
			<< std::endl;
		return;
	}

	verbosestream << "Client: Configuring X11-specific top level"
		<< " window properties"
		<< std::endl;


	Window x11_win = reinterpret_cast<Window>(exposedData.OpenGLLinux.X11Window);

	// Set application name and class hints. For now name and class are the same.
	XClassHint *classhint = XAllocClassHint();
	classhint->res_name = const_cast<char *>(name.c_str());
	classhint->res_class = const_cast<char *>(name.c_str());

	XSetClassHint(x11_dpl, x11_win, classhint);
	XFree(classhint);

	// FIXME: In the future WMNormalHints should be set ... e.g see the
	// gtk/gdk code (gdk/x11/gdksurface-x11.c) for the setup_top_level
ofs	hex dump	ascii
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0220	82	.