irrlicht 1.8.5

include/IColladaMeshWriter.h

@@ -288,7 +288,7 @@ namespace scene
 
 		//! Make certain there is only one collada material generated per Irrlicht material
 		/** Checks before creating a collada material-name if an identical
-		irr:::video::SMaterial has been exported already. If so don't export it with 
+		video::SMaterial has been exported already. If so don't export it with
 		another name. This is set by default and leads to way smaller .dae files.
 		Note that if you need to disable this flag for some reason you can still
 		get a similar effect using the IColladaMeshWriterNames::nameForMaterial

include/IGPUProgrammingServices.h

@@ -78,7 +78,7 @@ public:
 	OnSetConstants(). In this way it is easily possible to use the same
 	callback method for multiple materials and distinguish between them
 	during the call.
-	\param shaderLang a type of shading language used in current shader.
+	\param shadingLang a type of shading language used in current shader.
 	\return Number of the material type which can be set in
 	SMaterial::MaterialType to use the renderer. -1 is returned if an error
 	occured, e.g. if a shader program could not be compiled or a compile
@@ -205,7 +205,7 @@ public:
 	OnSetConstants(). In this way it is easily possible to use the same
 	callback method for multiple materials and distinguish between them
 	during the call.
-	\param shaderLang a type of shading language used in current shader.
+	\param shadingLang a type of shading language used in current shader.
 	\return Number of the material type which can be set in
 	SMaterial::MaterialType to use the renderer. -1 is returned if an error
 	occured, e.g. if a shader program could not be compiled or a compile
@@ -330,7 +330,7 @@ public:
 	OnSetConstants(). In this way it is easily possible to use the same
 	callback method for multiple materials and distinguish between them
 	during the call.
-	\param shaderLang a type of shading language used in current shader.
+	\param shadingLang a type of shading language used in current shader.
 	\return Number of the material type which can be set in
 	SMaterial::MaterialType to use the renderer. -1 is returned if an
 	error occured, e.g. if a shader program could not be compiled or a

include/IGUIStaticText.h

@@ -85,8 +85,8 @@ namespace gui
 		//! Sets text justification mode
 		/** \param horizontal: EGUIA_UPPERLEFT for left justified (default),
 		EGUIA_LOWEERRIGHT for right justified, or EGUIA_CENTER for centered text.
-		\param vertical: EGUIA_UPPERLEFT to align with top edge,
-		EGUIA_LOWEERRIGHT for bottom edge, or EGUIA_CENTER for centered text (default). */
+		\param vertical: EGUIA_UPPERLEFT to align with top edge (default),
+		EGUIA_LOWEERRIGHT for bottom edge, or EGUIA_CENTER for centered text. */
 		virtual void setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical) = 0;
 
 		//! Enables or disables word wrap for using the static text as multiline text control.

include/IOSOperator.h

@@ -38,10 +38,10 @@ public:
 	virtual bool getProcessorSpeedMHz(u32* MHz) const = 0;
 
 	//! Get the total and available system RAM
-	/** \param Total: will contain the total system memory
-	\param Avail: will contain the available memory
+	/** \param totalBytes: will contain the total system memory in bytes
+	\param availableBytes: will contain the available memory in bytes
 	\return True if successful, false if not */
-	virtual bool getSystemMemory(u32* Total, u32* Avail) const = 0;
+	virtual bool getSystemMemory(u32* totalBytes, u32* availableBytes) const = 0;
 
 };
 

include/IVideoDriver.h

@@ -437,7 +437,9 @@ namespace video
 		\param format The color format of the render target. Floating point formats are supported.
 		\return Pointer to the created texture or 0 if the texture
 		could not be created. This pointer should not be dropped. See
-		IReferenceCounted::drop() for more information. */
+		IReferenceCounted::drop() for more information.
+		You may want to remove it from driver texture cache with removeTexture if you no longer need it.
+		*/
 		virtual ITexture* addRenderTargetTexture(const core::dimension2d<u32>& size,
 				const io::path& name = "rt", const ECOLOR_FORMAT format = ECF_UNKNOWN) =0;
 
@@ -515,7 +517,7 @@ namespace video
 		example in picture edit programs. To avoid this problem, you
 		could use the makeColorKeyTexture method, which takes the
 		position of a pixel instead a color value.
-		\param zeroTexels \deprecated If set to true, then any texels that match
+		\param zeroTexels (deprecated) If set to true, then any texels that match
 		the color key will have their color, as well as their alpha, set to zero
 		(i.e. black). This behavior matches the legacy (buggy) behavior prior
 		to release 1.5 and is provided for backwards compatibility only.
@@ -532,7 +534,7 @@ namespace video
 		\param colorKeyPixelPos Position of a pixel with the color key
 		color. Every texel with this color will become fully transparent as
 		described above.
-		\param zeroTexels \deprecated If set to true, then any texels that match
+		\param zeroTexels (deprecated) If set to true, then any texels that match
 		the color key will have their color, as well as their alpha, set to zero
 		(i.e. black). This behavior matches the legacy (buggy) behavior prior
 		to release 1.5 and is provided for backwards compatibility only.
@@ -1412,14 +1414,14 @@ namespace video
 		virtual SOverrideMaterial& getOverrideMaterial() =0;
 
 		//! Get the 2d override material for altering its values
-		/** The 2d override materual allows to alter certain render
+		/** The 2d override material allows to alter certain render
 		states of the 2d methods. Not all members of SMaterial are
 		honored, especially not MaterialType and Textures. Moreover,
 		the zbuffer is always ignored, and lighting is always off. All
 		other flags can be changed, though some might have to effect
 		in most cases.
 		Please note that you have to enable/disable this effect with
-		enableInitMaterial2D(). This effect is costly, as it increases
+		enableMaterial2D(). This effect is costly, as it increases
 		the number of state changes considerably. Always reset the
 		values when done.
 		\return Material reference which should be altered to reflect

include/IrrCompileConfig.h

@@ -8,11 +8,11 @@
 //! Irrlicht SDK Version
 #define IRRLICHT_VERSION_MAJOR 1
 #define IRRLICHT_VERSION_MINOR 8
-#define IRRLICHT_VERSION_REVISION 4
+#define IRRLICHT_VERSION_REVISION 5
 // This flag will be defined only in SVN, the official release code will have
 // it undefined
 //#define IRRLICHT_VERSION_SVN -alpha
-#define IRRLICHT_SDK_VERSION "1.8.4"
+#define IRRLICHT_SDK_VERSION "1.8.5"
 
 #include <stdio.h> // TODO: Although included elsewhere this is required at least for mingw
 
@@ -238,7 +238,7 @@ for Windows based systems. You also have to set #define UNICODE for this to comp
 #undef _IRR_WCHAR_FILESYSTEM
 #endif
 
-//! Define _IRR_COMPILE_WITH_JPEGLIB_ to enable compiling the engine using libjpeg.
+//! Define _IRR_COMPILE_WITH_LIBJPEG_ to enable compiling the engine using libjpeg.
 /** This enables the engine to read jpeg images. If you comment this out,
 the engine will no longer read .jpeg images. */
 #define _IRR_COMPILE_WITH_LIBJPEG_

include/IrrlichtDevice.h

@@ -170,7 +170,7 @@ namespace irr
 		\return True if window is active. */
 		virtual bool isWindowActive() const = 0;
 
-		//! Checks if the Irrlicht window has focus
+		//! Checks if the Irrlicht window has the input focus
 		/** \return True if window has focus. */
 		virtual bool isWindowFocused() const = 0;
 

include/Keycodes.h

@@ -163,8 +163,9 @@ namespace irr
 		KEY_ZOOM             = 0xFB,  // Zoom key
 		KEY_PA1              = 0xFD,  // PA1 key
 		KEY_OEM_CLEAR        = 0xFE,  // Clear key
+		KEY_NONE			 = 0xFF,  // usually no key mapping, but some laptops use it for fn key
 
-		KEY_KEY_CODES_COUNT  = 0xFF // this is not a key, but the amount of keycodes there are.
+		KEY_KEY_CODES_COUNT  = 0x100 // this is not a key, but the amount of keycodes there are.
 	};
 
 } // end namespace irr

include/S3DVertex.h

@@ -90,6 +90,7 @@ struct S3DVertex
 		return EVT_STANDARD;
 	}
 
+	//\param d d=0 returns other, d=1 returns this, values between interpolate.
 	S3DVertex getInterpolated(const S3DVertex& other, f32 d)
 	{
 		d = core::clamp(d, 0.0f, 1.0f);
@@ -168,6 +169,7 @@ struct S3DVertex2TCoords : public S3DVertex
 		return EVT_2TCOORDS;
 	}
 
+	//\param d d=0 returns other, d=1 returns this, values between interpolate.
 	S3DVertex2TCoords getInterpolated(const S3DVertex2TCoords& other, f32 d)
 	{
 		d = core::clamp(d, 0.0f, 1.0f);

include/SColor.h

@@ -335,7 +335,7 @@ namespace video
 
 		//! Interpolates the color with a f32 value to another color
 		/** \param other: Other color
-		\param d: value between 0.0f and 1.0f
+		\param d: value between 0.0f and 1.0f. d=0 returns other, d=1 returns this, values between interpolate.
 		\return Interpolated color. */
 		SColor getInterpolated(const SColor &other, f32 d) const
 		{

include/SViewFrustum.h

@@ -349,13 +349,13 @@ namespace scene
 			if (planes[i].classifyPointRelation(line.start) == core::ISREL3D_FRONT)
 			{
 				line.start = line.start.getInterpolated(line.end,
-						planes[i].getKnownIntersectionWithLine(line.start, line.end));
+						1.f-planes[i].getKnownIntersectionWithLine(line.start, line.end));
 				wasClipped = true;
 			}
 			if (planes[i].classifyPointRelation(line.end) == core::ISREL3D_FRONT)
 			{
 				line.end = line.start.getInterpolated(line.end,
-						planes[i].getKnownIntersectionWithLine(line.start, line.end));
+						1.f-planes[i].getKnownIntersectionWithLine(line.start, line.end));
 				wasClipped = true;
 			}
 		}

include/dimension2d.h

@@ -191,7 +191,7 @@ namespace core
 
 			//! Get the interpolated dimension
 			/** \param other Other dimension to interpolate with.
-			\param d Value between 0.0f and 1.0f.
+			\param d Value between 0.0f and 1.0f. d=0 returns other, d=1 returns this, values between interpolate.
 			\return Interpolated dimension. */
 			dimension2d<T> getInterpolated(const dimension2d<T>& other, f32 d) const
 			{

include/fast_atof.h

@@ -17,7 +17,8 @@ namespace core
 	//		used there has to be rewritten first.
 	IRRLICHT_API extern irr::core::stringc LOCALE_DECIMAL_POINTS;
 
-// we write [17] here instead of [] to work around a swig bug
+#define IRR_ATOF_TABLE_SIZE 17
+// we write [IRR_ATOF_TABLE_SIZE] here instead of [] to work around a swig bug
 const float fast_atof_table[17] = {
 	0.f,
 	0.1f,
@@ -323,8 +324,16 @@ inline const char* fast_atof_move(const char* in, f32& result)
 	if ( LOCALE_DECIMAL_POINTS.findFirst(*in) >= 0 )
 	{
 		const char* afterDecimal = ++in;
-		const f32 decimal = strtof10(in, &afterDecimal);
-		value += decimal * fast_atof_table[afterDecimal - in];
+		f32 decimal = strtof10(in, &afterDecimal);
+		size_t numDecimals = afterDecimal - in;
+		if (numDecimals < IRR_ATOF_TABLE_SIZE)
+		{
+			value += decimal * fast_atof_table[numDecimals];
+		}
+		else
+		{
+			value += decimal * (f32)pow(10.f, -(float)numDecimals);
+		}
 		in = afterDecimal;
 	}
 
@@ -334,7 +343,8 @@ inline const char* fast_atof_move(const char* in, f32& result)
 		// Assume that the exponent is a whole number.
 		// strtol10() will deal with both + and - signs,
 		// but calculate as f32 to prevent overflow at FLT_MAX
-		value *= powf(10.f, (f32)strtol10(in, &in));
+		// Using pow with float cast instead of powf as otherwise accuracy decreases.
+		value *= (f32)pow(10.f, (f32)strtol10(in, &in));
 	}
 
 	result = negative?-value:value;

include/line2d.h

@@ -211,7 +211,8 @@ class line2d
 		}
 
 		//! Get the closest point on this line to a point
-		/** \param checkOnlySegments: Default (true) is to return a point on the line-segment (between begin and end) of the line.
+		/** \param point: Starting search at this point
+		\param checkOnlySegments: Default (true) is to return a point on the line-segment (between begin and end) of the line.
 		When set to false the function will check for the first the closest point on the the line even when outside the segment. */
 		vector2d<T> getClosestPoint(const vector2d<T>& point, bool checkOnlySegments=true) const
 		{

source/Irrlicht/CFileSystem.cpp

@@ -109,6 +109,9 @@ CFileSystem::~CFileSystem()
 //! opens a file for read access
 IReadFile* CFileSystem::createAndOpenFile(const io::path& filename)
 {
+	if ( filename.empty() )
+		return 0;
+
 	IReadFile* file = 0;
 	u32 i;
 
@@ -611,6 +614,8 @@ bool CFileSystem::changeWorkingDirectoryTo(const io::path& newDirectory)
 
 io::path CFileSystem::getAbsolutePath(const io::path& filename) const
 {
+	if ( filename.empty() )
+		return filename;
 #if defined(_IRR_WINDOWS_CE_PLATFORM_)
 	return filename;
 #elif defined(_IRR_WINDOWS_API_)

source/Irrlicht/CGUIContextMenu.cpp

@@ -289,6 +289,8 @@ bool CGUIContextMenu::OnEvent(const SEvent& event)
 				{
 					// set event parent of submenus
 					IGUIElement * p =  EventParent ? EventParent : Parent;
+					if ( p )	// can be 0 when element got removed already
+					{
 						setEventParent(p);
 
 						SEvent event;
@@ -307,6 +309,7 @@ bool CGUIContextMenu::OnEvent(const SEvent& event)
 								remove();
 							}
 						}
+					}
 
 					return false;
 				}

source/Irrlicht/CGUITabControl.cpp

@@ -142,12 +142,9 @@ void CGUITab::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWrite
 	setNumber(in->getAttributeAsInt("TabNumber"));
 	setDrawBackground(in->getAttributeAsBool("DrawBackground"));
 	setBackgroundColor(in->getAttributeAsColor("BackColor"));
-	bool override = in->getAttributeAsBool("OverrideTextColorEnabled");
+	if ( in->existsAttribute("OverrideTextColorEnabled") )
+		OverrideTextColorEnabled = in->getAttributeAsBool("OverrideTextColorEnabled");
 	setTextColor(in->getAttributeAsColor("TextColor"));
-	if ( !override )
-	{
-		OverrideTextColorEnabled = false;
-	}
 
 	if (Parent && Parent->getType() == EGUIET_TAB_CONTROL)
 	{

source/Irrlicht/CImageLoaderJPG.cpp

@@ -125,14 +125,11 @@ bool CImageLoaderJPG::isALoadableFileFormat(io::IReadFile* file) const
 	return false;
 	#else
 
-	if (!file)
+	if (!(file && file->seek(0)))
 		return false;
-
-	s32 jfif = 0;
-	file->seek(6);
-	file->read(&jfif, sizeof(s32));
-	return (jfif == 0x4a464946 || jfif == 0x4649464a);
-
+	unsigned char header[3];
+	int headerLen = file->read(header, sizeof(header));
+	return headerLen >= 3 && !memcmp(header, "\xFF\xD8\xFF", 3);
 	#endif
 }
 

source/Irrlicht/CIrrDeviceSDL.cpp

@@ -57,7 +57,7 @@ CIrrDeviceSDL::CIrrDeviceSDL(const SIrrlichtCreationParameters& param)
 	Screen((SDL_Surface*)param.WindowId), SDL_Flags(SDL_ANYFORMAT),
 	MouseX(0), MouseY(0), MouseButtonStates(0),
 	Width(param.WindowSize.Width), Height(param.WindowSize.Height),
-	Resizable(false), WindowHasFocus(false), WindowMinimized(false)
+	Resizable(false), WindowMinimized(false)
 {
 	#ifdef _DEBUG
 	setDebugName("CIrrDeviceSDL");
@@ -220,12 +220,7 @@ void CIrrDeviceSDL::createDriver()
 	{
 	case video::EDT_DIRECT3D8:
 		#ifdef _IRR_COMPILE_WITH_DIRECT3D_8_
-
-		VideoDriver = video::createDirectX8Driver(CreationParams, FileSystem, HWnd);
-		if (!VideoDriver)
-		{
-			os::Printer::log("Could not create DIRECT3D8 Driver.", ELL_ERROR);
-		}
+		os::Printer::log("SDL device does not support DIRECT38 driver. Try another one.", ELL_ERROR);
 		#else
 		os::Printer::log("DIRECT3D8 Driver was not compiled into this dll. Try another one.", ELL_ERROR);
 		#endif // _IRR_COMPILE_WITH_DIRECT3D_8_
@@ -234,12 +229,7 @@ void CIrrDeviceSDL::createDriver()
 
 	case video::EDT_DIRECT3D9:
 		#ifdef _IRR_COMPILE_WITH_DIRECT3D_9_
-
-		VideoDriver = video::createDirectX9Driver(CreationParams, FileSystem, HWnd);
-		if (!VideoDriver)
-		{
-			os::Printer::log("Could not create DIRECT3D9 Driver.", ELL_ERROR);
-		}
+		os::Printer::log("SDL device does not support DIRECT3D9 driver. Try another one.", ELL_ERROR);
 		#else
 		os::Printer::log("DIRECT3D9 Driver was not compiled into this dll. Try another one.", ELL_ERROR);
 		#endif // _IRR_COMPILE_WITH_DIRECT3D_9_
@@ -423,10 +413,6 @@ bool CIrrDeviceSDL::run()
 			break;
 
 		case SDL_ACTIVEEVENT:
-			if ((SDL_event.active.state == SDL_APPMOUSEFOCUS) ||
-					(SDL_event.active.state == SDL_APPINPUTFOCUS))
-				WindowHasFocus = (SDL_event.active.gain==1);
-			else
 			if (SDL_event.active.state == SDL_APPACTIVE)
 				WindowMinimized = (SDL_event.active.gain!=1);
 			break;
@@ -708,11 +694,29 @@ video::IVideoModeList* CIrrDeviceSDL::getVideoModeList()
 	{
 		// enumerate video modes.
 		const SDL_VideoInfo *vi = SDL_GetVideoInfo();
-		SDL_Rect **modes = SDL_ListModes(vi->vfmt, SDL_Flags);
+
+		SDL_PixelFormat pixelFormat = *(vi->vfmt);
+
+		core::array<Uint8> checkBitsPerPixel;
+		checkBitsPerPixel.push_back(8);
+		checkBitsPerPixel.push_back(16);
+		checkBitsPerPixel.push_back(24);
+		checkBitsPerPixel.push_back(32);
+		if ( pixelFormat.BitsPerPixel > 32 )
+			checkBitsPerPixel.push_back(pixelFormat.BitsPerPixel);
+
+		for ( u32 i=0; i<checkBitsPerPixel.size(); ++i)
+		{
+			pixelFormat.BitsPerPixel = checkBitsPerPixel[i];
+			SDL_Rect **modes = SDL_ListModes(&pixelFormat, SDL_Flags|SDL_FULLSCREEN);
 			if (modes != 0)
 			{
 				if (modes == (SDL_Rect **)-1)
-				os::Printer::log("All modes available.\n");
+				{
+					core::stringc strLog("All modes available for bit-depth ");
+					strLog += core::stringc(pixelFormat.BitsPerPixel);
+					os::Printer::log(strLog.c_str());
+				}
 				else
 				{
 					for (u32 i=0; modes[i]; ++i)
@@ -720,22 +724,111 @@ video::IVideoModeList* CIrrDeviceSDL::getVideoModeList()
 				}
 			}
 		}
+	}
 
 	return VideoModeList;
 }
 
 
+#if defined(_IRR_COMPILE_WITH_OPENGL_) && defined(_IRR_WINDOWS_)
+#define IRR_SHARE_GL_RESOURCE_ON_RESIZE 
+
+// Code from http://www.bytehazard.com/articles/sdlres.html (with some changes) to share GL resources used in SDL on Win32 while switching GL context
+static HGLRC startShareGLResources()
+{
+	// get window handle from SDL
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+	if (SDL_GetWMInfo(&info) == -1) 
+	{
+		return 0;
+	}
+
+	 // get device context handle
+	HDC tempDC = GetDC( info.window );
+
+	// create temporary context
+	HGLRC tempRC = wglCreateContext( tempDC );
+	if (tempRC == NULL) 
+	{
+		ReleaseDC(info.window, tempDC);
+		return 0;
+	}
+ 
+	// share resources to temporary context
+	SetLastError(0);
+	if (!wglShareLists(info.hglrc, tempRC)) 
+	{
+		ReleaseDC(info.window, tempDC);
+		return 0;
+	}
+
+	return tempRC;
+}
+
+static bool endShareGLResources(HGLRC tempRC)
+{
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+	if (SDL_GetWMInfo(&info) == -1) 
+	{
+		return false;
+	}
+ 
+	// share resources to new SDL-created context
+	if (!wglShareLists(tempRC, info.hglrc)) 
+	{
+		return false;
+	}
+ 
+	// we no longer need our temporary context
+	if (!wglDeleteContext(tempRC)) 
+	{
+		return false;
+	}
+ 
+	return true;
+}
+#endif
+
+
 //! Sets if the window should be resizable in windowed mode.
 void CIrrDeviceSDL::setResizable(bool resize)
 {
 	if (resize != Resizable)
 	{
+#ifdef  IRR_SHARE_GL_RESOURCE_ON_RESIZE
+		// Workaround: 	On Windows SDL loses the OpenGL context when the SDL_Flags changes.
+		// So we create a temporary OpenGL context to share the GL resources.
+		// It doesn't seem to happen on other platforms.
+		const bool shareGLresources = (SDL_Flags & SDL_OPENGL) != 0;
+		HGLRC shareRC = 0;
+		if ( shareGLresources )
+		{
+			shareRC = startShareGLResources();
+			if ( shareRC == 0  )
+			{
+				os::Printer::log("Can't change resizable without losing GL context.");
+				return;
+			}
+		}
+#endif
+
+
 		if (resize)
 			SDL_Flags |= SDL_RESIZABLE;
 		else
 			SDL_Flags &= ~SDL_RESIZABLE;
+
 		Screen = SDL_SetVideoMode( 0, 0, 0, SDL_Flags );
 		Resizable = resize;
+
+#ifdef IRR_SHARE_GL_RESOURCE_ON_RESIZE
+		if ( shareRC != 0 )
+		{
+			endShareGLResources(shareRC);
+		}
+#endif
 	}
 }
 
@@ -764,14 +857,15 @@ void CIrrDeviceSDL::restoreWindow()
 //! returns if window is active. if not, nothing need to be drawn
 bool CIrrDeviceSDL::isWindowActive() const
 {
-	return (WindowHasFocus && !WindowMinimized);
+	const Uint8 appState = SDL_GetAppState();
+	return (appState&SDL_APPACTIVE && appState&SDL_APPINPUTFOCUS) ? true : false;
 }
 
 
 //! returns if window has focus.
 bool CIrrDeviceSDL::isWindowFocused() const
 {
-	return WindowHasFocus;
+	return (SDL_GetAppState()&SDL_APPINPUTFOCUS) ? true : false;
 }
 
 

source/Irrlicht/CIrrDeviceSDL.h

@@ -204,7 +204,7 @@ namespace irr
 		u32 Width, Height;
 
 		bool Resizable;
-		bool WindowHasFocus;
+		bool WindowHasFocusDeprecated;	// TODO: variable only kept to avoid breaking binary compatibility in 1.8. Will be removed in 1.9
 		bool WindowMinimized;
 
 		struct SKeyMap

source/Irrlicht/CIrrDeviceWin32.cpp

@@ -366,6 +366,9 @@ void pollJoysticks()
 bool activateJoysticks(core::array<SJoystickInfo> & joystickInfo)
 {
 #if defined _IRR_COMPILE_WITH_JOYSTICK_EVENTS_
+	joystickInfo.clear();
+	ActiveJoysticks.clear();
+
 #ifdef _IRR_COMPILE_WITH_DIRECTINPUT_JOYSTICK_
 	if (!DirectInputDevice || (DirectInputDevice->EnumDevices(DI8DEVCLASS_GAMECTRL, SJoystickWin32Control::EnumJoysticks, this, DIEDFL_ATTACHEDONLY )))
 	{
@@ -386,9 +389,6 @@ bool activateJoysticks(core::array<SJoystickInfo> & joystickInfo)
 	}
 	return true;
 #else
-	joystickInfo.clear();
-	ActiveJoysticks.clear();
-
 	const u32 numberOfJoysticks = ::joyGetNumDevs();
 	JOYINFOEX info;
 	info.dwSize = sizeof(info);
@@ -1858,6 +1858,26 @@ void CIrrDeviceWin32::ReportLastWinApiError()
 	}
 }
 
+// Same function Windows offers in VersionHelpers.h, but we can't use that as it's not available in older sdk's (minimum is SDK 8.1)
+bool CIrrDeviceWin32::isWindowsVistaOrGreater()
+{
+#if (_WIN32_WINNT >= 0x0500)
+	OSVERSIONINFOEX osvi;
+	ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+	osvi.dwMajorVersion = 6; //  Windows Vista
+
+	if ( !GetVersionEx((OSVERSIONINFO*)&osvi) )
+	{
+		return false;
+	}
+
+	return VerifyVersionInfo(&osvi, VER_MAJORVERSION, VerSetConditionMask(0, VER_MAJORVERSION, VER_GREATER_EQUAL));
+#else
+    return false;
+#endif
+}
+
 // Convert an Irrlicht texture to a Windows cursor
 // Based on http://www.codeguru.com/cpp/w-p/win32/cursors/article.php/c4529/
 HCURSOR CIrrDeviceWin32::TextureToCursor(HWND hwnd, irr::video::ITexture * tex, const core::rect<s32>& sourceRect, const core::position2d<s32> &hotspot)

source/Irrlicht/CIrrDeviceWin32.h

@@ -111,13 +111,16 @@ namespace irr
 			return CIrrDeviceStub::checkSuccessiveClicks(mouseX, mouseY, inputEvent );
 		}
 
-		//! switchs to fullscreen
+		//! Switch to fullscreen
 		bool switchToFullScreen(bool reset=false);
 
 		//! Check for and show last Windows API error to help internal debugging.
-		//! Does call GetLastError and on errors formats the errortext and displays it in a messagebox.
+		//! Does call GetLastError and on errors formats the error text and displays it in a messagebox.
 		static void ReportLastWinApiError();
 
+		//! Same function Windows offers in VersionHelpers.h, but we can't use that as it's not available before SDK 8.1
+		static bool isWindowsVistaOrGreater();
+
 		// convert an Irrlicht texture to a windows cursor
 		HCURSOR TextureToCursor(HWND hwnd, irr::video::ITexture * tex, const core::rect<s32>& sourceRect, const core::position2d<s32> &hotspot);
 
@@ -276,15 +279,21 @@ namespace irr
 			{
 				if (!fullscreen)
 				{
+					s32 paddingBorder = 0;
+					#if defined (SM_CXPADDEDBORDER)
+						if (CIrrDeviceWin32::isWindowsVistaOrGreater())
+							paddingBorder = GetSystemMetrics(SM_CXPADDEDBORDER);
+					#endif
+
 					if (resizable)
 					{
-					 BorderX = GetSystemMetrics(SM_CXSIZEFRAME);
-					 BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYSIZEFRAME);
+						BorderX = GetSystemMetrics(SM_CXSIZEFRAME) + paddingBorder;
+						BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYSIZEFRAME) + paddingBorder;
 					}
 					else
 					{
-					 BorderX = GetSystemMetrics(SM_CXDLGFRAME);
-					 BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYDLGFRAME);
+						BorderX = GetSystemMetrics(SM_CXDLGFRAME) + paddingBorder;
+						BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYDLGFRAME) + paddingBorder;
 					}
 				}
 				else

source/Irrlicht/CNullDriver.cpp

@@ -912,7 +912,7 @@ const wchar_t* CNullDriver::getName() const
 
 
 //! Draws a shadow volume into the stencil buffer. To draw a stencil shadow, do
-//! this: Frist, draw all geometry. Then use this method, to draw the shadow
+//! this: First, draw all geometry. Then use this method, to draw the shadow
 //! volume. Then, use IVideoDriver::drawStencilShadow() to visualize the shadow.
 void CNullDriver::drawStencilShadowVolume(const core::array<core::vector3df>& triangles, bool zfail, u32 debugDataVisible)
 {

source/Irrlicht/CNullDriver.h

@@ -282,7 +282,7 @@ namespace video
 		virtual void addExternalImageWriter(IImageWriter* writer);
 
 		//! Draws a shadow volume into the stencil buffer. To draw a stencil shadow, do
-		//! this: Frist, draw all geometry. Then use this method, to draw the shadow
+		//! this: First, draw all geometry. Then use this method, to draw the shadow
 		//! volume. Then, use IVideoDriver::drawStencilShadow() to visualize the shadow.
 		virtual void drawStencilShadowVolume(const core::array<core::vector3df>& triangles, bool zfail=true, u32 debugDataVisible=0);
 

source/Irrlicht/COSOperator.cpp

@@ -13,9 +13,11 @@
 #include <unistd.h>
 #ifndef _IRR_SOLARIS_PLATFORM_
 #include <sys/types.h>
+#ifdef _IRR_OSX_PLATFORM_
 #include <sys/sysctl.h>
 #endif
 #endif
+#endif
 
 #if defined(_IRR_COMPILE_WITH_X11_DEVICE_)
 #include "CIrrDeviceLinux.h"
@@ -169,6 +171,20 @@ bool COSOperator::getProcessorSpeedMHz(u32* MHz) const
 bool COSOperator::getSystemMemory(u32* Total, u32* Avail) const
 {
 #if defined(_IRR_WINDOWS_API_) && !defined (_IRR_XBOX_PLATFORM_)
+
+    #if (_WIN32_WINNT >= 0x0500)
+	MEMORYSTATUSEX MemoryStatusEx;
+ 	MemoryStatusEx.dwLength = sizeof(MEMORYSTATUSEX);
+
+	// cannot fail
+	GlobalMemoryStatusEx(&MemoryStatusEx);
+
+	if (Total)
+		*Total = (u32)(MemoryStatusEx.ullTotalPhys>>10);
+	if (Avail)
+		*Avail = (u32)(MemoryStatusEx.ullAvailPhys>>10);
+	return true;
+	#else
 	MEMORYSTATUS MemoryStatus;
 	MemoryStatus.dwLength = sizeof(MEMORYSTATUS);
 
@@ -179,9 +195,8 @@ bool COSOperator::getSystemMemory(u32* Total, u32* Avail) const
 		*Total = (u32)(MemoryStatus.dwTotalPhys>>10);
  	if (Avail)
 		*Avail = (u32)(MemoryStatus.dwAvailPhys>>10);
-
-	_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
     return true;
+	#endif
 
 #elif defined(_IRR_POSIX_API_) && !defined(__FreeBSD__)
 #if defined(_SC_PHYS_PAGES) && defined(_SC_AVPHYS_PAGES)
@@ -198,7 +213,7 @@ bool COSOperator::getSystemMemory(u32* Total, u32* Avail) const
 		*Avail = (u32)((ps*(long long)ap)>>10);
 	return true;
 #else
-	// TODO: implement for non-availablity of symbols/features
+	// TODO: implement for non-availability of symbols/features
 	return false;
 #endif
 #else

source/Irrlicht/MacOSX/CIrrDeviceMacOSX.mm

@@ -495,8 +495,8 @@ CIrrDeviceMacOSX::CIrrDeviceMacOSX(const SIrrlichtCreationParameters& param)
 		if(!CreationParams.WindowId) //load menus if standalone application
 		{
 			[[NSAutoreleasePool alloc] init];
-			[NSApplication sharedApplication];
-			[NSApp setDelegate:(id<NSFileManagerDelegate>)[[[AppDelegate alloc] initWithDevice:this] autorelease]];
+			[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
+			[NSApp setDelegate:(id<NSApplicationDelegate>)[[[AppDelegate alloc] initWithDevice:this] autorelease]];
 			[NSBundle loadNibNamed:@"MainMenu" owner:[NSApp delegate]];
 			[NSApp finishLaunching];
 		}
@@ -1259,7 +1259,12 @@ void CIrrDeviceMacOSX::postMouseEvent(void *event,irr::SEvent &ievent)
 	}
 
 	if (post)
+	{
+		ievent.MouseInput.Shift = ([(NSEvent *)event modifierFlags] & NSShiftKeyMask) != 0;
+		ievent.MouseInput.Control = ([(NSEvent *)event modifierFlags] & NSControlKeyMask) != 0;
+		
 		postEventFromUser(ievent);
+	}
 
 	[NSApp sendEvent:(NSEvent *)event];
 }

source/Irrlicht/Makefile

 VERSION_MAJOR = 1
 VERSION_MINOR = 8
-VERSION_RELEASE = 4
-# Irrlicht Engine 1.8.4
+VERSION_RELEASE = 5
+# Irrlicht Engine 1.8.5
 # Makefile for Linux
 #
 # To use, just run:
@@ -27,6 +27,8 @@ VERSION_RELEASE = 4
 #
 # make win32
 #
+# Or as MinGW by default has CC set to cc - but has no compiler by that name - you might have to do:
+# make CC=gcc win32
 
 #List of object files, separated based on engine architecture
 IRRMESHLOADER = CBSPMeshFileLoader.o CMD2MeshFileLoader.o CMD3MeshFileLoader.o CMS3DMeshFileLoader.o CB3DMeshFileLoader.o C3DSMeshFileLoader.o COgreMeshFileLoader.o COBJMeshFileLoader.o CColladaFileLoader.o CCSMLoader.o CDMFLoader.o CLMTSMeshFileLoader.o CMY3DMeshFileLoader.o COCTLoader.o CXMeshFileLoader.o CIrrMeshFileLoader.o CSTLMeshFileLoader.o CLWOMeshFileLoader.o CPLYMeshFileLoader.o CSMFMeshFileLoader.o

source/Irrlicht/aesGladman/aescrypt.cpp

@@ -125,10 +125,12 @@ aes_rval aes_encrypt(const void *in_blk, void *out_blk, const aes_encrypt_ctx cx
         round(fwd_rnd,  b1, b0, kp + 1 * N_COLS);
         round(fwd_rnd,  b0, b1, kp + 2 * N_COLS);
         kp += 2 * N_COLS;
+        /* Falls through. */
     case 12:
         round(fwd_rnd,  b1, b0, kp + 1 * N_COLS);
         round(fwd_rnd,  b0, b1, kp + 2 * N_COLS);
         kp += 2 * N_COLS;
+        /* Falls through. */
     case 10:
         round(fwd_rnd,  b1, b0, kp + 1 * N_COLS);
         round(fwd_rnd,  b0, b1, kp + 2 * N_COLS);
@@ -249,10 +251,12 @@ aes_rval aes_decrypt(const void *in_blk, void *out_blk, const aes_decrypt_ctx cx
         round(inv_rnd,  b1, b0, kp -  1 * N_COLS);
         round(inv_rnd,  b0, b1, kp -  2 * N_COLS);
         kp -= 2 * N_COLS;
+        /* Falls through. */
     case 12:
         round(inv_rnd,  b1, b0, kp -  1 * N_COLS);
         round(inv_rnd,  b0, b1, kp -  2 * N_COLS);
         kp -= 2 * N_COLS;
+        /* Falls through. */
     case 10:
         round(inv_rnd,  b1, b0, kp -  1 * N_COLS);
         round(inv_rnd,  b0, b1, kp -  2 * N_COLS);

source/Irrlicht/aesGladman/sha2.cpp

@@ -576,12 +576,15 @@ sha2_int sha2_begin(unsigned long len, sha2_ctx ctx[1])
     switch(len)
     {
         case 256:   l = len >> 3;
+        /* Falls through. */
         case  32:   CTX_256(ctx)->count[0] = CTX_256(ctx)->count[1] = 0;
                     memcpy(CTX_256(ctx)->hash, i256, 32); break;
         case 384:   l = len >> 3;
+        /* Falls through. */
         case  48:   CTX_384(ctx)->count[0] = CTX_384(ctx)->count[1] = 0;
                     memcpy(CTX_384(ctx)->hash, i384, 64); break;
         case 512:   l = len >> 3;
+        /* Falls through. */
         case  64:   CTX_512(ctx)->count[0] = CTX_512(ctx)->count[1] = 0;
                     memcpy(CTX_512(ctx)->hash, i512, 64); break;
         default:    return SHA2_BAD;

source/Irrlicht/libpng/ANNOUNCE

-Libpng 1.6.23 - June 9, 2016
+libpng 1.6.37 - April 14, 2019
+==============================
 
-This is a public release of libpng, intended for use in production codes.
+This is a public release of libpng, intended for use in production code.
 
-Files available for download:
 
-Source files with LF line endings (for Unix/Linux) and with a
-"configure" script
+Files available for download
+----------------------------
 
-   libpng-1.6.23.tar.xz (LZMA-compressed, recommended)
-   libpng-1.6.23.tar.gz
+Source files with LF line endings (for Unix/Linux):
 
-Source files with CRLF line endings (for Windows), without the
-"configure" script
+ * libpng-1.6.37.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.37.tar.gz
 
-   lpng1623.7z  (LZMA-compressed, recommended)
-   lpng1623.zip
+Source files with CRLF line endings (for Windows):
+
+ * lp1637.7z (LZMA-compressed, recommended)
+ * lp1637.zip
 
 Other information:
 
-   libpng-1.6.23-README.txt
-   libpng-1.6.23-LICENSE.txt
-   libpng-1.6.23-*.asc (armored detached GPG signatures)
-
-Changes since the last public release (1.6.22):
-
-  Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying).
-  Fixed the progressive reader to handle empty first IDAT chunk properly
-    (patch by Timothy Nikkel).  This bug was introduced in libpng-1.6.0 and
-    only affected the libpng16 branch.
-  Added tests in pngvalid.c to check zero-length IDAT chunks in various
-    positions.  Fixed the sequential reader to handle these more robustly
-    (John Bowler).
-  Corrected progressive read input buffer in pngvalid.c. The previous version
-    the code invariably passed just one byte at a time to libpng.  The intent
-    was to pass a random number of bytes in the range 0..511.
-  Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch.
-  Added missing ")" in pngerror.c (Matt Sarrett).
-  Fixed undefined behavior in png_push_save_buffer(). Do not call
-    memcpy() with a null source, even if count is zero (Leon Scroggins III).
-  Fixed bad link to RFC2083 in png.5 (Nikola Forro).
-
-(subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe)
-or to glennrp at users.sourceforge.net
+ * README.md
+ * LICENSE.md
+ * AUTHORS.md
+ * TRADEMARK.md
+
+
+Changes since the previous public release (version 1.6.36)
+----------------------------------------------------------
 
-Glenn R-P
+ * Fixed a use-after-free vulnerability (CVE-2019-7317) in png_image_free.
+ * Fixed a memory leak in the ARM NEON implementation of png_do_expand_palette.
+ * Fixed a memory leak in pngtest.c.
+ * Fixed two vulnerabilities (CVE-2018-14048, CVE-2018-14550) in
+   contrib/pngminus; refactor.
+ * Changed the license of contrib/pngminus to MIT; refresh makefile and docs.
+   (Contributed by Willem van Schaik)
+ * Fixed a typo in the libpng license v2.
+   (Contributed by Miguel Ojeda)
+ * Added makefiles for AddressSanitizer-enabled builds.
+ * Cleaned up various makefiles.
+
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
+Subscription is required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe.

source/Irrlicht/libpng/AUTHORS

+PNG REFERENCE LIBRARY AUTHORS
+=============================
+
+This is the list of PNG Reference Library ("libpng") Contributing
+Authors, for copyright and licensing purposes.
+
+ * Andreas Dilger
+ * Cosmin Truta
+ * Dave Martindale
+ * Eric S. Raymond
+ * Gilles Vollant
+ * Glenn Randers-Pehrson
+ * Greg Roelofs
+ * Guy Eric Schalnat
+ * James Yu
+ * John Bowler
+ * Kevin Bracey
+ * Magnus Holmgren
+ * Mandar Sahastrabuddhe
+ * Mans Rullgard
+ * Matt Sarett
+ * Mike Klein
+ * Paul Schmidt
+ * Sam Bushell
+ * Samuel Williams
+ * Simon-Pierre Cadieux
+ * Tim Wegner
+ * Tom Lane
+ * Tom Tanner
+ * Vadim Barkov
+ * Willem van Schaik
+ * Zhijie Liang
+ * Arm Holdings
+   - Richard Townsend
+ * Google Inc.
+   - Matt Sarett
+   - Mike Klein
+
+The build projects, the build scripts, the test scripts, and other
+files in the "projects", "scripts" and "tests" directories, have other
+copyright owners, but are released under the libpng license.
+
+Some files in the "contrib" directory, and some tools-generated files
+that are distributed with libpng, have other copyright owners, and are
+released under other open source licenses.

source/Irrlicht/libpng/LICENSE

+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
+=========================================
+
+PNG Reference Library License version 2
+---------------------------------------
+
+ * Copyright (c) 1995-2019 The PNG Reference Library Authors.
+ * Copyright (c) 2018-2019 Cosmin Truta.
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * Copyright (c) 1996-1997 Andreas Dilger.
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
+
+The software is supplied "as is", without warranty of any kind,
+express or implied, including, without limitation, the warranties
+of merchantability, fitness for a particular purpose, title, and
+non-infringement.  In no event shall the Copyright owners, or
+anyone distributing the software, be liable for any damages or
+other liability, whether in contract, tort or otherwise, arising
+from, out of, or in connection with the software, or the use or
+other dealings in the software, even if advised of the possibility
+of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute
+this software, or portions hereof, for any purpose, without fee,
+subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you
+    must not claim that you wrote the original software.  If you
+    use this software in a product, an acknowledgment in the product
+    documentation would be appreciated, but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+    not be misrepresented as being the original software.
 
-This copy of the libpng notices is provided for your convenience.  In case of
-any discrepancy between this copy and the notices in the file png.h that is
-included in the libpng distribution, the latter shall prevail.
-
-COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+ 3. This Copyright notice may not be removed or altered from any
+    source or altered source distribution.
 
-If you modify libpng you may insert additional notices immediately following
-this sentence.
 
-This code is released under the libpng license.
+PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
+-----------------------------------------------------------------------
 
-libpng versions 1.0.7, July 1, 2000 through 1.6.23, June 9, 2016 are
-Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
+libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
+Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
 added to the list of Contributing Authors:
@@ -22,25 +51,28 @@ added to the list of Contributing Authors:
     Cosmin Truta
     Gilles Vollant
     James Yu
+    Mandar Sahastrabuddhe
+    Google Inc.
+    Vadim Barkov
 
 and with the following additions to the disclaimer:
 
-   There is no warranty against interference with your enjoyment of the
-   library or against infringement.  There is no warranty that our
+    There is no warranty against interference with your enjoyment of
+    the library or against infringement.  There is no warranty that our
     efforts or the library will fulfill any of your particular purposes
     or needs.  This library is provided with all faults, and the entire
-   risk of satisfactory quality, performance, accuracy, and effort is with
-   the user.
+    risk of satisfactory quality, performance, accuracy, and effort is
+    with the user.
 
 Some files in the "contrib" directory and some configure-generated
-files that are distributed with libpng have other copyright owners and
+files that are distributed with libpng have other copyright owners, and
 are released under other open source licenses.
 
 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
 Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
 libpng-0.96, and are distributed according to the same disclaimer and
-license as libpng-0.96, with the following individuals added to the list
-of Contributing Authors:
+license as libpng-0.96, with the following individuals added to the
+list of Contributing Authors:
 
     Tom Lane
     Glenn Randers-Pehrson
@@ -59,7 +91,7 @@ Contributing Authors:
     Greg Roelofs
     Tom Tanner
 
-Some files in the "scripts" directory have other copyright owners
+Some files in the "scripts" directory have other copyright owners,
 but are released under this license.
 
 libpng versions 0.5, May 1995, through 0.88, January 1996, are
@@ -74,13 +106,14 @@ is defined as the following set of individuals:
     Paul Schmidt
     Tim Wegner
 
-The PNG Reference Library is supplied "AS IS".  The Contributing Authors
-and Group 42, Inc. disclaim all warranties, expressed or implied,
-including, without limitation, the warranties of merchantability and of
-fitness for any purpose.  The Contributing Authors and Group 42, Inc.
-assume no liability for direct, indirect, incidental, special, exemplary,
-or consequential damages, which may result from the use of the PNG
-Reference Library, even if advised of the possibility of such damage.
+The PNG Reference Library is supplied "AS IS".  The Contributing
+Authors and Group 42, Inc. disclaim all warranties, expressed or
+implied, including, without limitation, the warranties of
+merchantability and of fitness for any purpose.  The Contributing
+Authors and Group 42, Inc. assume no liability for direct, indirect,
+incidental, special, exemplary, or consequential damages, which may
+result from the use of the PNG Reference Library, even if advised of
+the possibility of such damage.
 
 Permission is hereby granted to use, copy, modify, and distribute this
 source code, or portions hereof, for any purpose, without fee, subject
@@ -94,37 +127,8 @@ to the following restrictions:
  3. This Copyright notice may not be removed or altered from any
     source or altered source distribution.
 
-The Contributing Authors and Group 42, Inc. specifically permit, without
-fee, and encourage the use of this source code as a component to
-supporting the PNG file format in commercial products.  If you use this
-source code in a product, acknowledgment is not required but would be
-appreciated.
-
-END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
-
-TRADEMARK:
-
-The name "libpng" has not been registered by the Copyright owner
-as a trademark in any jurisdiction.  However, because libpng has
-been distributed and maintained world-wide, continually since 1995,
-the Copyright owner claims "common-law trademark protection" in any
-jurisdiction where common-law trademark is recognized.
-
-OSI CERTIFICATION:
-
-Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
-a certification mark of the Open Source Initiative. OSI has not addressed
-the additional disclaimers inserted at version 1.0.7.
-
-EXPORT CONTROL:
-
-The Copyright owner believes that the Export Control Classification
-Number (ECCN) for libpng is EAR99, which means not subject to export
-controls or International Traffic in Arms Regulations (ITAR) because
-it is open source, publicly available software, that does not contain
-any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
-734.7(b).
-
-Glenn Randers-Pehrson
-glennrp at users.sourceforge.net
-June 9, 2016
+The Contributing Authors and Group 42, Inc. specifically permit,
+without fee, and encourage the use of this source code as a component
+to supporting the PNG file format in commercial products.  If you use
+this source code in a product, acknowledgment is not required but would
+be appreciated.

source/Irrlicht/libpng/TODO

-/*
 TODO - list of things to do for libpng:
 
-Final bug fixes.
-Better C++ wrapper/full C++ implementation?
-Fix problem with C++ and EXTERN "C".
-cHRM transformation.
-Remove setjmp/longjmp usage in favor of returning error codes.
-Palette creation.
-Add "grayscale->palette" transformation and "palette->grayscale" detection.
-Improved dithering.
-Multi-lingual error and warning message support.
-Complete sRGB transformation (presently it simply uses gamma=0.45455).
-Make profile checking optional via a png_set_something() call.
-Man pages for function calls.
-Better documentation.
-Better filter selection
-   (counting huffman bits/precompression?  filter inertia?  filter costs?).
-Histogram creation.
-Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Avoid building gamma tables whenever possible.
-Use greater precision when changing to linear gamma for compositing against
-  background and doing rgb-to-gray transformation.
-Investigate pre-incremented loop counters and other loop constructions.
-Add interpolated method of handling interlacing.
-Switch to the simpler zlib (zlib/libpng) license if legally possible.
-Extend pngvalid.c to validate more of the libpng transformations.
-
-*/
+* Fix all defects (duh!)
+* Better C++ wrapper / full C++ implementation (?)
+* Fix the problems with C++ and 'extern "C"'.
+* cHRM transformation.
+* Palette creation.
+* "grayscale->palette" transformation and "palette->grayscale" detection.
+* Improved dithering.
+* Multi-lingual error and warning message support.
+* Complete sRGB transformation.  (Currently it simply uses gamma=0.45455.)
+* Man pages for function calls.
+* Better documentation.
+* Better filter selection
+  (e.g., counting huffman bits/precompression; filter inertia; filter costs).
+* Histogram creation.
+* Text conversion between different code pages (e.g., Latin-1 -> Mac).
+* Avoid building gamma tables whenever possible.
+* Greater precision in changing to linear gamma for compositing against
+  background, and in doing rgb-to-gray transformations.
+* Investigate pre-incremented loop counters and other loop constructions.
+* Interpolated method of handling interlacing.
+* More validations for libpng transformations.

source/Irrlicht/libpng/TRADEMARK

+TRADEMARK
+=========
+
+The name "libpng" has not been registered by the Copyright owners
+as a trademark in any jurisdiction.  However, because libpng has
+been distributed and maintained world-wide, continually since 1995,
+the Copyright owners claim "common-law trademark protection" in any
+jurisdiction where common-law trademark is recognized.

source/Irrlicht/libpng/libpngpf.3

-.TH LIBPNGPF 3 "June 9, 2016"
+.TH LIBPNGPF 3 "April 14, 2019"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.23
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.37
 (private functions)
+
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
 
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now that the private function prototypes are hidden in pngpriv.h and not accessible to applications. Look in pngpriv.h for the prototypes and a short description of each \fIfunction.
+\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer
+\fP\fImaintained\fP\fB, now that the private function prototypes are hidden in
+\fP\fIpngpriv.h\fP\fB and not accessible to applications. Look in
+\fP\fIpngpriv.h\fP\fB for the prototypes and a short description of each
+function.
 
 .SH DESCRIPTION
 The functions previously listed here are used privately by libpng and are not
 available for use by applications.  They are not "exported" to applications
 using shared libraries.
 
-.SH SEE ALSO
+.SH "SEE ALSO"
 .BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
-.SH AUTHOR
-Glenn Randers-Pehrson
+
+.SH AUTHORS
+Cosmin Truta, Glenn Randers-Pehrson

source/Irrlicht/libpng/png.5

-.TH PNG 5 "June 9, 2016"
+.TH PNG 5 "April 14, 2019"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
+
 .SH DESCRIPTION
 PNG (Portable Network Graphics) is an extensible file format for the
-lossless, portable, well-compressed storage of raster images. PNG provides
-a patent-free replacement for GIF and can also replace many
+lossless, portable, well-compressed storage of raster images.  PNG
+provides a patent-free replacement for GIF, and can also replace many
 common uses of TIFF. Indexed-color, grayscale, and truecolor images are
 supported, plus an optional alpha channel.  Sample depths range from
 1 to 16 bits.
 .br
-
-PNG is designed to work well in online viewing applications, such as the
-World Wide Web, so it is fully streamable with a progressive display
-option. PNG is robust, providing both full file integrity checking and
-fast, simple detection of common transmission errors. Also, PNG can store
-gamma and chromaticity data for improved color matching on heterogeneous
-platforms.
+PNG is designed to work well in online viewing applications, such
+as the World Wide Web, so it is fully streamable with a progressive
+display option.  PNG is robust, providing both full file integrity
+checking and fast, simple detection of common transmission errors.
+Also, PNG can store gamma and chromaticity data for improved color
+matching on heterogeneous platforms.
 
 .SH "SEE ALSO"
 .BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
 .LP
-PNG specification (second edition), November 2003:
+PNG Specification (Second Edition), November 2003:
 .IP
 .br
-  <http://www.w3.org/TR/2003/REC-PNG-20031110/
-PNG 1.2 specification, July 1999:
+https://www.w3.org/TR/2003/REC-PNG-20031110/
+.LP
+PNG 1.2 Specification, July 1999:
 .IP
 .br
-http://png-mng.sourceforge.net/pub/png/spec/1.2/
+https://png-mng.sourceforge.io/pub/png/spec/1.2/
 .LP
-PNG 1.0 specification, October 1996:
+PNG 1.0 Specification, October 1996:
 .IP
 .br
 RFC 2083
-.IP
 .br
-http://www.ietf.org/rfc/rfc2083.txt
+https://www.ietf.org/rfc/rfc2083.txt
+.IP
 .br
-or (as a W3C Recommendation) at
+or W3C Recommendation
 .br
-http://www.w3.org/TR/REC-png-961001
+https://www.w3.org/TR/REC-png-961001
+
 .SH AUTHORS
-This man page: Glenn Randers-Pehrson
+This man page: Cosmin Truta, Glenn Randers-Pehrson
 .LP
 Portable Network Graphics (PNG) Specification (Second Edition)
 Information technology - Computer graphics and image processing -
@@ -53,22 +55,30 @@ Glenn Randers-Pehrson and others (png-list).
 .LP
 Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
 Thomas Boutell and others (png-list).
-.LP
-
 
-.SH COPYRIGHT NOTICE
+.SH COPYRIGHT
 .LP
-This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson.  See png.h
-for conditions of use and distribution.
+This man page is
+.br
+Copyright (c) 2018-2019 Cosmin Truta.
+.br
+Copyright (c) 1998-2006 Glenn Randers-Pehrson.
+.br
+See png.h for conditions of use and distribution.
 .LP
 The PNG Specification (Second Edition) is
+.br
 Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
 .LP
-The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
+The PNG-1.2 Specification is
+.br
+Copyright (c) 1999 Glenn Randers-Pehrson.
+.br
 See the specification for conditions of use and distribution.
 .LP
-The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
-Technology.  See the specification for conditions of use and distribution.
-.LP
+The PNG-1.0 Specification is
+.br
+Copyright (c) 1996 Massachusetts Institute of Technology.
+.br
+See the specification for conditions of use and distribution.
 .\" end of man page
-

source/Irrlicht/libpng/pngdebug.h

 
 /* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Copyright (c) 2018 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer