Merged revisions 2477:2484 from 1.5 branch. Support for range fog under...

Merged revisions 2477:2484 from 1.5 branch. Support for range fog under OpenGL. Cleaned up changes.txt.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2485 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

-Changes in 1.6
+Changes in 1.6 (??.??.2009)
 
  - Added support for EXP2 fog distribution. This required a change in the setFog parameters where now an enum value instead of the bool linear is given.
 
@@ -123,562 +123,452 @@ Changes in 1.6
  - Avoid fp-precision problem in getPickedNodeBB (see also http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=33838&highlight=). 
    This change might also fix the problem with picking nodes found by aanderse (http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=32890&highlight=)
 
-Changes in 1.6 TA
-	- implemented isALoadableFileFormat ( File *file ) for the Archive Loader
-Changes in 1.6 TA
-	- PixelBlend16 and PixelBlend16_simd are working for the new rules.
-	- bugfix. CLightSceneNode didn't correctly update it's attributes
-	
-		Lighting Linear Attenuation.	= 1.f / radius
-		
-		The Example loadirr files set the lightscene radius to 1000.f but
-		stays on the previous default attentuation with the older radius 100 -> 1.f / 100
-		so the examples looks golden-brown.
-		
-		Now the radius is correctly!! set to the attenuation of 1.f/1000.f because the
-		file doesn't have special attenuation. and now it looks more yellow.
-		can anybody show me a correct screenshot for this file;-)? Niko?
-		
-		Or is this behavior the default lighting?. then it would be
-		a fixed constant linear attenuation of 0.01f;-). Please clearify
-		For now i didn't fixed it
-		
-		
-		I encountered this behavior because i ( burning video ) used the original radius
-		for calculations and so i've found that radius != 1.f / linearAttenuation but
-		in the LightSceneNode this formula was used.. confused;-)
-		
-
-	- vector template and equals tests
-		as working with the test suits i cleaned the template behavior (mixed types are
-		used in the templates) and added all missing special math function with their coressponding type
-		I also set the equal test for s32 to behave like the f32 routine.
-
-		The function equals always implements a weak test.		
-		that means a tolerance MUST always be used if you use the equal function. default is 1.
-		you can set it to zero a==b-> equals ( a, b, 0 ) but do it explicit like you have to
-		for floating compare. This is important when irrlicht is going to use special hardware
-		math acceleration on a per function base, like sse2, or the other way round fixpoint.
-	
-	- VideoDriver drawPixel
-		The HW renderes are using the alpha components for blending.
-		The Software Renderes and image loaders are using CImage::setPixel copy. 
-		so setPixel is engaged to either blends or copy the pixel
-		default: false
-	- Burningvideo
-		added RenderMaterial EMT_SPHERE_MAP
-			pushed burningsvideo to 0.43
-		added RenderMaterial EMT_REFLECTION_2_LAYER
-			pushed burningsvideo to 0.44
-		set	EMT_TRANSPARENT_ALPHA_CHANNEL_REF
-			to use AlphaRef 0.5 like Direct3D
-			
-		One Note: in OpenGL there is know difference between sphere_map and reflection layer
-		both using GL_TEXTURE_GEN_MODE GL_SPHERE_MAP, whereas in d3d one time using camera_normal
-		on sphere and reflection on refletcion_layer.
-		
-		The visual difference is that on sphere map the "image is not moving" when you rotate the 
-		viewer. For Buring i took the opengl visual. always moving
-				
-
-	- rename quake3 SEntity to IEntity to be confom with IShader
-		even IShader and IEntity are none pure virtual interfaces
-		like most irrlicht objects
---------------------------------------------------------------
-
-Changes in 1.6 TA
-	- fixed createMeshWith2TCoords
-		normals were missing during copy. 
-	- addded
-		//! Creates a copy of the mesh, which will only consist of S3DVertex vertices.
-		IMesh* CMeshManipulator::createMeshWith1TCoords(IMesh* mesh) const
-
-	- added io::IFileSystem* CSceneManager::getFileSystem()
-		for preparing to remove the (mostly) unnecessary double member variables
-		in many loaders
-
-	-	added virtual const c8* ISceneManager::getAnimatorTypeName(ESCENE_NODE_ANIMATOR_TYPE type);
-		to the SceneManger Interface. just like getTypeName is public
-	
-	- added CSceneNodeAnimatorFlyCircle::radiusEllipsoid.
-		if radiusEllipsoid == 0 the default circle animation is done
-		else radiusEllipsoid forms the b-axe of the ellipsoid.
-		
-		-> gummiball bouncing
-		
-	- added ISceneManager::createFlyStraightAnimator variable bool ping-pong
-		used in loop mode to device if start from beginning ( default ) or make ping-pong
-		
-		-> straight bouncing
-
-	- changed IFileSystem::registerFileArchive
-		remove the index of the hiarchy and added a new interface method
-	
-		//! move the hirarchy of the filesystem. moves sourceIndex relative up or down
-		virtual bool moveFileArchive( u32 sourceIndex, s32 relative ) = 0;
-	
-	 	
-	- bugfix and changes in
-		SViewFrustum::SViewFrustum
-		wrong size of Matrices copy. This bug must be ages old... (typo)
-		detected during resizing the Matrices. removed obsolute Matrices
-		renamed E_TRANSFORMATION_STATE_2 to E_TRANSFORMATION_STATE_FRUSTUM
-		
-		therefore also changed SViewFrustum::setTransformState to not tap
-		in the pitfall again of wrong memory...
-		and renamed it to getTransform, like in the driver
-		and Matrices private
-		
-	- OpenGL:
-		Specular 
-	- moved
-		//! EMT_ONETEXTURE_BLEND: has BlendFactor Alphablending
-		inline bool textureBlendFunc_hasAlpha ( E_BLEND_FACTOR factor ) const
-		from the material renderes ( 3x declared ) to SMaterial.h
-
-	- updated managed light example to use standard driver selection
-	- BurningsVideo
-		- LightModel reworked.
-			Point Light & Direction Light works for Diffuse Color as aspected
-			Specular and Fog still have problems ( needs new pixel shader )
-			pushed burningsvideo to 0.42 for this major step
-
-		-	removed obsolete matrix transformations
-			renamed E_TRANSFORMATION_STATE_2 to E_TRANSFORMATION_STATE_BURNING
-
-			
-	- cleaned line3d.h vector3d.h template behavior.
-		many mixed f32/f64 implementations are here. i'm not sure if this should be
-		the default behavior to use f64 for example for 1.0/x value, because they
-		benefit from more precisions, but in my point of view the user is responsible
-		of choosing a vector3d<f32> or vector3d<f64>.
-	- added core::squareroot to irrmath.h
-		-> for having candidates for faster math in the same file
-	- added AllowZWriteOnTransparent from SceneManager to burningsvideo	
-		Following SceneManger guideline
-	-added hasAlpha() to ITexture
-		This info can be used for e.q to downgrade a transparent alpha channel blit
-		to add if the texture has no alpha channel.
-	
---------------------------------------------------------------
-Changes in version 1.6, TA
-
+ - implemented isALoadableFileFormat ( File *file ) for the Archive Loader
+
+ - PixelBlend16 and PixelBlend16_simd are working for the new rules.
+
+ - bugfix. CLightSceneNode didn't correctly update it's attributes
+  
+ - vector template and equals tests
+    also set the equal test for s32 to behave like the f32 routine.
+    The function equals always implements a weak test.    
+    that means a tolerance MUST always be used if you use the equal function. default is 1.
+  
+  - VideoDriver drawPixel
+    The HW renderes are using the alpha components for blending.
+    The Software Renderes and image loaders are using CImage::setPixel copy. 
+    so setPixel is engaged to either blends or copy the pixel
+    default: false
+  - Burningvideo
+    added RenderMaterial EMT_SPHERE_MAP
+      pushed burningsvideo to 0.43
+    added RenderMaterial EMT_REFLECTION_2_LAYER
+      pushed burningsvideo to 0.44
+    set  EMT_TRANSPARENT_ALPHA_CHANNEL_REF
+      to use AlphaRef 0.5 like Direct3D
+      
+    One Note: in OpenGL there is know difference between sphere_map and reflection layer
+    both using GL_TEXTURE_GEN_MODE GL_SPHERE_MAP, whereas in d3d one time using camera_normal
+    on sphere and reflection on refletcion_layer.
+    
+    The visual difference is that on sphere map the "image is not moving" when you rotate the 
+    viewer. For Burning i took the opengl visual. always moving
+        
+  - rename quake3 SEntity to IEntity to be confom with IShader
+
+  - fixed createMeshWith2TCoords, normals were missing during copy. 
+
+  - added
+    //! Creates a copy of the mesh, which will only consist of S3DVertex vertices.
+    IMesh* CMeshManipulator::createMeshWith1TCoords(IMesh* mesh) const
+
+  - added io::IFileSystem* CSceneManager::getFileSystem()
+
+  - added virtual const c8* ISceneManager::getAnimatorTypeName(ESCENE_NODE_ANIMATOR_TYPE type);
+  
+  - added CSceneNodeAnimatorFlyCircle::radiusEllipsoid.
+    if radiusEllipsoid == 0 the default circle animation is done
+    else radiusEllipsoid forms the b-axe of the ellipsoid.
+    -> gummiball bouncing
+    
+  - added ISceneManager::createFlyStraightAnimator variable bool ping-pong
+    used in loop mode to device if start from beginning ( default ) or make ping-pong
+    -> straight bouncing
+
+  - changed IFileSystem::registerFileArchive
+    remove the index of the hierarchy and added a new interface method
+    //! move the hirarchy of the filesystem. moves sourceIndex relative up or down
+    virtual bool moveFileArchive( u32 sourceIndex, s32 relative ) = 0;
+
+  - bugfix and changes in SViewFrustum::SViewFrustum
+    wrong size of Matrices copy.
+    renamed E_TRANSFORMATION_STATE_2 to E_TRANSFORMATION_STATE_FRUSTUM
+    therefore also changed SViewFrustum::setTransformState to not tap
+    in the pitfall again of wrong memory...
+
+  - moved
+    //! EMT_ONETEXTURE_BLEND: has BlendFactor Alphablending
+    inline bool textureBlendFunc_hasAlpha ( E_BLEND_FACTOR factor ) const
+    from the material renderes ( 3x declared ) to SMaterial.h
+
+  - updated managed light example to use standard driver selection
+
+  - BurningsVideo
+    - LightModel reworked.
+      Point Light & Direction Light works for Diffuse Color as expected
+      Specular and Fog still have problems ( needs new pixel shader )
+      pushed burningsvideo to 0.42 for this major step
+
+    -  removed obsolete matrix transformations
+      renamed E_TRANSFORMATION_STATE_2 to E_TRANSFORMATION_STATE_BURNING
+
+  - cleaned line3d.h vector3d.h template behavior.
+    many mixed f32/f64 implementations are here. i'm not sure if this should be
+    the default behavior to use f64 for example for 1.0/x value, because they
+    benefit from more precisions, but in my point of view the user is responsible
+    of choosing a vector3d<f32> or vector3d<f64>.
+
+  - added core::squareroot to irrmath.h
+    -> for having candidates for faster math in the same file
+
+  - added AllowZWriteOnTransparent from SceneManager to burningsvideo  
+
+  -added hasAlpha() to ITexture
+    This info can be used for e.q to downgrade a transparent alpha channel blit
+    to add if the texture has no alpha channel.
+  
 - FileSystem 2.0 SUPER MASTER MAJOR API CHANGE !!!
 
-	The FileSystem is now build internally like for e.g. the image- and meshloaders.
-	There exists a known list of ArchiveLoaders, which know how to produce a Archive.
-	The Loaders and the Archives can be attached/detached on runtime.
-	
-	The FileNames are now stored as core::string<c16>. where c16 is toggled between char/wchar
-	with the #define flag _IRR_WCHAR_FILESYSTEM, to supported unicode backends (default:off)
-	Replaced most (const c8* filename) to string references.
-
-	Basically the FileSystem is divided into two regions. Native and Virtual.
-		Native means using the backend OS.
-		Virtual means only use currently attached IArchives.
-	
-	Browsing
-		each FileSystem has it's own workdirectory and it's own methods to
-			- create a FileTree
-			- add/remove files & directory ( to be done )
-				Hint: store a savegame in a zip archive...
-				
-		 basic browsing for all archives is implemented.
-		 Example 21. Quake3Explorer shows this
-		 
-	 TODO:
-		- a file filter should be implemented.
-		- The IArchive should have a function to create a filetree
-			for now CFileList is used.
-				
-	Class Hierarchy:
-	
-	IArchiveLoader: is able to produce a IFileArchive
-		- ZipLoader
-		- PakLoader
-		- MountPointReader ( formaly known as CUnzipReader )
-
-	IFileArchive: 
-		-ZipArchive
-		-PakArchive
-		-MountPoint (known as FolderFile)
-		
-	IFileSystem
-		- addArchiveLoader
-
-	- changed implementation of isALoadableFileExtension in all loaders
-		to have consistent behavior
-	- added a parameter to IFileList * createFileList	
-		setFileListSystem
-		allows to query files in any of the game archives
-		standard behavior listtype = SYSTEM ( default)
-	
-	- CLimitReadFile
-		added multiple file random-access support.
-		solved problems with mixed compressed & uncompressed files in a zip
-
-	TODO:
-		- Big Big Testing!!
-		- many loaders use their own private filesearching
-		- there are a lot of helper function ( getAbsolutePath, getFileDir )
-		  which should be adapted to the virtual filesystem
-		
+  The FileSystem is now build internally like for e.g. the image- and meshloaders.
+  There exists a known list of ArchiveLoaders, which know how to produce a Archive.
+  The Loaders and the Archives can be attached/detached on runtime.
+  
+  The FileNames are now stored as core::string<c16>. where c16 is toggled between char/wchar
+  with the #define flag _IRR_WCHAR_FILESYSTEM, to supported unicode backends (default:off)
+  Replaced most (const c8* filename) to string references.
+
+  Basically the FileSystem is divided into two regions. Native and Virtual.
+    Native means using the backend OS.
+    Virtual means only use currently attached IArchives.
+  
+  Browsing
+    each FileSystem has it's own workdirectory and it's own methods to
+      - create a FileTree
+      - add/remove files & directory ( to be done )
+        Hint: store a savegame in a zip archive...
+        
+     basic browsing for all archives is implemented.
+     Example 21. Quake3Explorer shows this
+     
+   TODO:
+    - a file filter should be implemented.
+    - The IArchive should have a function to create a filetree
+      for now CFileList is used.
+        
+  Class Hierarchy:
+  
+  IArchiveLoader: is able to produce a IFileArchive
+    - ZipLoader
+    - PakLoader
+    - MountPointReader ( formaly known as CUnzipReader )
+
+  IFileArchive: 
+    -ZipArchive
+    -PakArchive
+    -MountPoint (known as FolderFile)
+    
+  IFileSystem
+    - addArchiveLoader
+
+  - changed implementation of isALoadableFileExtension in all loaders
+    to have consistent behavior
+  - added a parameter to IFileList * createFileList  
+    setFileListSystem
+    allows to query files in any of the game archives
+    standard behavior listtype = SYSTEM ( default)
+  
+  - CLimitReadFile
+    added multiple file random-access support.
+    solved problems with mixed compressed & uncompressed files in a zip
+
 - IrrlichtDevice
-	added:
-		virtual bool setGammaRamp( f32 red, f32 green, f32 blue, f32 brightness, f32 contrast ) = 0;
-		virtual bool getGammaRamp( f32 &red, f32 &green, f32 &blue ) = 0;
-
-	and calculating methods to DeviceStub.
-	implemented in Win32, TODO: other Devices
-	
-	-	irrlicht.h
-		changed exported irrlicht.dll routines createDevice, createDeviceEx, IdentityMatrix
-		to extern "C" name mangling.
-		
-		for easier dynamically loading the irrlicht library and different versions
+  added:
+    virtual bool setGammaRamp( f32 red, f32 green, f32 blue, f32 brightness, f32 contrast ) = 0;
+    virtual bool getGammaRamp( f32 &red, f32 &green, f32 &blue ) = 0;
+  and calculating methods to DeviceStub.
+  implemented in Win32, TODO: other Devices
+  
+  -  irrlicht.h
+    changed exported irrlicht.dll routines createDevice, createDeviceEx, IdentityMatrix
+    to extern "C" name mangling.
 
  - ParticleSystem
-		removed the private (old?,wrong?) interface from the ParticleEffectors
-		to match the parent class irr::io::IAttributeExchangingObject::deserializeAttributes
-		TODO:
-			please test if the serialization works!
-		
+    removed the private (old?,wrong?) interface from the ParticleEffectors
+    to match the parent class irr::io::IAttributeExchangingObject::deserializeAttributes
+    
 - Generic
-	- vector3d<T>& normalize() optimized
-		added reciprocal_squareroot for f64
-	
-	- dimension2d
-		added operator dimension2d<T>& operator=(const dimension2d<U>& other)
-		to cast between different types
-	- vector2d bugfix operator+=
-
-	- C3DMeshLoader renamed chunks const u16 to a enum
-		removing "variable declared but never used warning"
-	- added a global const identity Material
-		changed all references *((video::SMaterial*)0) to point to IdentityMaterial
-		removed warning: "a NULL reference is not allowed"
-
-	- modified IRRLICHT_MATH to not support reciprocal stuff
-		but to use faster float-to-int conversion.
-		gcc troubles may they are. i'm using intel-compiler..;-)
-	- core::matrix4
-			USE_MATRIX_TEST	
-
-			i tried to optimize the identity-check ( in means of performance)
-			i didn't succeed so well, so i made a define for the matrix isIdentity -check
-			for now it's sometimes faster to always calculate versus identity-check
-			but if there are a lot of scenenodes/ particles one can profit from the
-			fast_inverse matrix, when no scaling is used. further approvement could
-			be done on inverse for just tranlastion! ( many static scenenodes are not rotated,
-			they are just placed somewhere in the world)
-			one thing to take in account is that sizeof(matrix) is 64 byte and
-			with the additional bool/u32 makes it 66 byte which is not really cache-friendly..
-
-		- added	buildRotateFromTo
-				Builds a matrix that rotates from one vector to another
-				
-	- irr::array. changed allocating routine in push_back
-
-		okt, 2008. it's only allowed to alloc one element, if 
-		default constructor has to be called.
-		
-		removes existing crashes. ( MD3 Mesh ) and possible others ones.
-		
-		A new list template should be made.
-		one with constructor/destructor calls ( safe_array ) and
-		one without. like the array since the beginning of irrlicht.
-		currently the array/string is extremly slow..
-		
-		also a hint for the user has to be done, so that a struct T of
-		array<T> must have a copy constructor of type T ( const T&other ).
-		
-		i needed hours to track that down...
-		
-		added a new method setAllocStrategy, 
-		safe ( used + 1 ), double ( used * 2 + 1)
-		
-		better default strategies will be implemented
-		
-		- removed binary_search_const
-			i added it quite a long time ago, but it doesnt make real sense
-			a call to a sort method should happen always. i just wanted to safe
-			a few cycles..
-		- added binary_search_multi
-			searches for a multi-set ( more than 1 entry in the sorted array)
-			returns start and end-index
-
-	- changed some identity matrix settings to use core::IdentityMatrix	
-	-	added deletePathFromFilename to generic string functions in coreutil.h and
-		removed from CZipReader and CPakReader
-		
-	- s32 deserializeAttributes used instead of virtual void deserializeAttributes in
-		ParticleSystem ( wrong virtual was used)
+  - vector3d<T>& normalize() optimized
+    added reciprocal_squareroot for f64
+  
+  - dimension2d
+    added operator dimension2d<T>& operator=(const dimension2d<U>& other)
+    to cast between different types
+
+  - vector2d bugfix operator+=
+
+  - C3DSMeshLoader renamed chunks const u16 to a enum
+    removing "variable declared but never used warning"
+
+  - added a global const identity Material
+    changed all references *((video::SMaterial*)0) to point to IdentityMaterial
+    removed warning: "a NULL reference is not allowed"
+
+  - modified IRRLICHT_MATH to not support reciprocal stuff
+    but to use faster float-to-int conversion.
+
+  - core::matrix4
+      USE_MATRIX_TEST  
+
+      i tried to optimize the identity-check ( w.r.t. performance)
+      i didn't succeed so well, so i made a define for the matrix isIdentity -check
+      for now it's sometimes faster to always calculate versus identity-check
+      but if there are a lot of scenenodes/ particles one can profit from the
+      fast_inverse matrix, when no scaling is used. further approvement could
+      be done on inverse for just translation! ( many static scenenodes are not rotated,
+      they are just placed somewhere in the world)
+      one thing to take in account is that sizeof(matrix) is 64 byte and
+      with the additional bool/u32 makes it 66 byte which is not really cache-friendly..
+
+    - added  buildRotateFromTo
+        Builds a matrix that rotates from one vector to another
+        
+  - irr::array. changed allocating routine in push_back
+
+    added a new method setAllocStrategy, 
+    safe ( used + 1 ), double ( used * 2 + 1)
+    better default strategies will be implemented
+    
+    - removed binary_search_const
+      i added it quite a long time ago, but it doesnt make real sense
+      a call to a sort method should happen always. i just wanted to safe
+      a few cycles..
+    - added binary_search_multi
+      searches for a multi-set ( more than 1 entry in the sorted array)
+      returns start and end-index
+
+  - changed some identity matrix settings to use core::IdentityMatrix  
+
+  -  added deletePathFromFilename to generic string functions in coreutil.h and
+    removed from CZipReader and CPakReader
+    
+  - s32 deserializeAttributes used instead of virtual void deserializeAttributes in
+    ParticleSystem ( wrong virtual was used)
 
 - strings & Locale
-	- started to add locale support
-	- added verify to string
-	- added some helper functions
-	
-
+  - started to add locale support
+  - added verify to string
+  - added some helper functions
+  
 - XBOX
-	i have access to a XBOX development machine now. I started to compile
-	for the XBOX. Question: Who did the previous implementation?. There
-	is no XBOX-Device inhere. maybe it's forbidden because of using the offical
-	Microsoft XDK. I will implement a native or sdl device based on opendk.
-	irrlicht compiles without errors on the xbox but can't be used.
-	
-	TODO:
-		- native XBOX Device
+  i have access to a XBOX development machine now. I started to compile
+  for the XBOX. Question: Who did the previous implementation?. There
+  is no XBOX-Device inhere. maybe it's forbidden because of using the offical
+  Microsoft XDK. I will implement a native or sdl device based on opendk.
+  irrlicht compiles without errors on the xbox but can't be used.
+  
 - Windows Mobile
-		reworked a little. added the mobile example to the windows solution for 
-		cross development.
-		added maximal 128x128 texture size for windows mobile ( memory issues )
-- Collision	Speed Up
-
-	The Collision Speed Up greatly improves with many small static child-nodes
-	
-	- added COctTreeTriangleSelector::getTriangles for 3dline from user Piraaate
-	- modified createOctTreeTriangleSelector and createTriangleSelector
-		to allow node == 0, to be added to a meta selector
-	- CSceneNodeAnimatorCollisionResponse has the same problem as CSceneNodeAnimatorFPS
-		on first update:
-		Problem. you start setting the map. (setWorld). First update cames 4000 ms later.
-		The Animator applies the missing force... big problem...
-		changed to react on first update like camera.
-		
-		-	add Variable FirstUpdate. if set to true ( on all changes )
-			then position, lasttime, and falling are initialized
-
-	-added #define OCTTREE_USE_HARDWARE in Octree.h
-	
-		if defined octtree uses internally a derived scene::MeshBuffer which has
-		the possibility to use the Hardware Vertex Buffer for static vertices and
-		dirty indices;-)
-		
-		if defined OCTTREE_USE_HARDWARE octree uses internally a derived scene::CMeshBuffer
-		so it's not just a replacement inside the octree. It also in the OctTreeSceneNode.
-		#define OCTTREE_PARENTTEST is also used. It's skip testing on fully outside and takes everything on fully inside
-
-
-	- virtual void ISceneNode::updateAbsolutePosition()
-		-	changed 
-			inline CMatrix4<T> CMatrix4<T>::operator*(const CMatrix4<T>& m2) const
-
-			all two matrices have to be checked by isIdentity()
-			to let the isIdentity work always
-
-	- changed inline bool CMatrix4<T>::isIdentity() const
-
-		on full identityCheck->
-		to look first on Translation, because this is the most challenging element
-		which will likely not to be identity..
-			
-	- virtual core::matrix4 getRelativeTransformation() const
-
-		Hierarchy on Identity-Check
-			1) ->getRelativeTransform -> 9 floating point checks to be passed as Identity
-			2) ->isIdentity () -> 16 floating point checks to be passed as Identity
-			
-	- inline void CMatrix4<T>::transformBoxEx(core::aabbox3d<f32>& box) const
-		added isIdentity() check
-
-		
-- changed CSceneNodeAnimatorCollisionResponse		
-	- added CSceneNodeAnimatorCollisionResponse::setGravity
-		needed to set the differents Forces for the Animator. for eq. water..
-	- added CSceneNodeAnimatorCollisionResponse::setAnimateTarget
-	- added CSceneNodeAnimatorCollisionResponse::getAnimateTarget
-	- changed CSceneNodeAnimatorCollisionResponse::animateNode to react on FirstUpdate
-	- TODO: set Gravity to Physically frame independent values..
-		current response uses an frame depdended acceleration vector.
-		~9.81 m/s^2 was achieved at around 50 fps with a setting of -0.03
-		may effect existing application..
-	
+    reworked a little. added the mobile example to the windows solution for 
+    cross development.
+    added maximal 128x128 texture size for windows mobile ( memory issues )
+
+- Collision  Speed Up
+
+  The Collision Speed Up greatly improves with many small static child-nodes
+  
+  - added COctTreeTriangleSelector::getTriangles for 3dline from user Piraaate
+
+  - modified createOctTreeTriangleSelector and createTriangleSelector
+    to allow node == 0, to be added to a meta selector
+
+  - CSceneNodeAnimatorCollisionResponse has the same problem as CSceneNodeAnimatorFPS
+    on first update:
+    Problem. you start setting the map. (setWorld). First update cames 4000 ms later.
+    The Animator applies the missing force... big problem...
+    changed to react on first update like camera.
+    
+    -  add Variable FirstUpdate. if set to true ( on all changes )
+      then position, lasttime, and falling are initialized
+
+  -added #define OCTTREE_USE_HARDWARE in Octree.h
+  
+    if defined octtree uses internally a derived scene::MeshBuffer which has
+    the possibility to use the Hardware Vertex Buffer for static vertices and
+    dirty indices;-)
+    
+    if defined OCTTREE_USE_HARDWARE octree uses internally a derived scene::CMeshBuffer
+    so it's not just a replacement inside the octree. It also in the OctTreeSceneNode.
+    #define OCTTREE_PARENTTEST is also used. It's skip testing on fully outside and takes everything on fully inside
+
+  - virtual void ISceneNode::updateAbsolutePosition()
+    -  changed inline CMatrix4<T> CMatrix4<T>::operator*(const CMatrix4<T>& m2) const
+
+  - changed inline bool CMatrix4<T>::isIdentity() const
+    to look first on Translation, because this is the most challenging element
+      
+  - virtual core::matrix4 getRelativeTransformation() const
+    Hierarchy on Identity-Check
+      1) ->getRelativeTransform -> 9 floating point checks to be passed as Identity
+      2) ->isIdentity () -> 16 floating point checks to be passed as Identity
+      
+  - inline void CMatrix4<T>::transformBoxEx(core::aabbox3d<f32>& box) const
+    added isIdentity() check
+    
+- changed CSceneNodeAnimatorCollisionResponse    
+  - added CSceneNodeAnimatorCollisionResponse::setGravity
+    needed to set the differents Forces for the Animator. for eq. water..
+  - added CSceneNodeAnimatorCollisionResponse::setAnimateTarget
+  - added CSceneNodeAnimatorCollisionResponse::getAnimateTarget
+  - changed CSceneNodeAnimatorCollisionResponse::animateNode to react on FirstUpdate
+  - TODO: set Gravity to Physically frame independent values..
+    current response uses an frame depdended acceleration vector.
+    ~9.81 m/s^2 was achieved at around 50 fps with a setting of -0.03
+    may effect existing application..
+  
 - SceneNodes
-	- CSkyDomeSceneNode
-		moved radius ( default 1000 ) to constructor
-		added Normals
-		added DebugInfo
-		added Material.ZBuffer, added SceneMaanager
-			
-	- CVolumeLightSceneNode:
-		changed default blending OneTextureBlendgl_src_color gl_src_alpha to
-			EMT_TRANSPARENT_ADD_COLOR ( gl_src_color gl_one )
-		which gives the same effect on non-transparent-materials.
-		Following the unspoken guide-line, lowest effect as default
-	- changed SceneNode Skydome f64 to f32, 
-	- AnimatedMesh
-		-Debug Data: 
-			mesh normals didn't rotate with the scenenode fixed ( matrix-multiplication order)
-	- Camera SceneNode setPosition
-		Camera now finally allow to change position and target and updates all
-		effected animators..
-		
-		a call to OnAnimate ( ) lastime < time or OnAnimate ( 0 ) will reset the
-		camera and fr. the collision animator to a new position
-			
+  - CSkyDomeSceneNode
+    moved radius ( default 1000 ) to constructor
+    added Normals
+    added DebugInfo
+    added Material.ZBuffer, added SceneManager
+      
+  - CVolumeLightSceneNode:
+    changed default blending OneTextureBlendgl_src_color gl_src_alpha to
+      EMT_TRANSPARENT_ADD_COLOR ( gl_src_color gl_one )
+    which gives the same effect on non-transparent-materials.
+    Following the unspoken guide-line, lowest effect as default
+
+  - changed SceneNode Skydome from f64 to f32
+
+  - AnimatedMesh Debug Data: 
+      mesh normals didn't rotate with the scenenode fixed ( matrix-multiplication order)
+
+  - Camera SceneNode setPosition
+    Camera now finally allow to change position and target and updates all
+    effected animators..
+
 - Device:
-		added the current mousebutton state to the Mouse Event
-		so i need to get the current mouse state from the OS
-		
-		-added to CIrrDeviceWin32
-		TODO:		
-		- Linux and SDL Device
+    added the current mousebutton state to the Mouse Event
+    so i need to get the current mouse state from the OS
+
 - GUI
 
-	- CGUIFont:
-		- added virtual void setInvisibleCharacters( const wchar_t *s ) = 0;
-		
-		define which characters should not be drawn ( send to driver) by the font.
-		for example " " would not draw any space which is usually blank in most fonts
-		and saves rendering of ususally full blank alpha-sprites.
-		This saves a lot of rendering...
-		
-		default:
-			setInvisibleCharacters ( L" " );
-			
-		- added MultiLine rendering
-			should avoid to us CStaticText breaking text in future
-	- CGUIListBox
-		- changed Scrollbar LargeStepSize to ItemHeight
-		  which easy enables to scroll line by line
-		  
-	- CGUIScrollBar
-			bug: 
-				Create a Window and inside a listbox with a scrollbar or
-				a windowed irrlicht application
-				
-				Click & hold Scrollbar Slider. move outside it's region.
-				Release Mouse. Go Back to Scrollbar.. it's moving always...
-				
-				it's generally missing the event PRESSED_MOVED, which
-				leads to problem when an element is dragging, has a focus, or position loose
-				and gets focus back again. ( think of a drunken mouse sliding left&right during tracking )
-
-			so added the mouse Input Buttonstates on every mouse event
-				IrrDeviceWin32:
-				 added 	event.MouseInput.ButtonStates = wParam & ( MK_LBUTTON | MK_RBUTTON | MK_MBUTTON );
-				 TODO:
-					Linux & SDL
-
-				so now i can do this
-				case irr::EMIE_MOUSE_MOVED:				 
-			 	if ( !event.MouseInput.isLeftPressed () )
-				{
-					Dragging = false;
-				}
-
-			- bug:
-				Scrollbar notifyListBox notify when the scrollbar is clicked. 
-
-			- changed timed event in draw to OnPostRender
-					
-	-	added GUI Image List from Reinhard Ostermeier, modified to work
-		added GUI Tree View from Reinhard Ostermeier, modified to work	
-		shown in the Quake3MapShader Example
-		TODO: Spritebanks
-		
-	- FileOpenDialog
-		changed the static text for the filename to an edit box.
-	- changed the interface for addEditBox to match with addStaticText
-	- changed the interface for addSpinBox to match with addEditBox
-	- added MouseWheel to Spinbox
-	- changed CGUITable CLICK_AREA from 3 to 12 to enable clicking on the visible marker
-	- CGUISpritebank
-		removed some crashes with empty Sprite banks		
-	- IGUIScrollBar
-		added SetMin before min was always 0
-		changed ScrollWheel Direction on horizontal to move right on wheel up, left on wheel down
-		
-	- IComboBox
-		-added ItemData
-	- optimized IsVisible check in IGUIElement::draw
+  - CGUIFont:
+    - added virtual void setInvisibleCharacters( const wchar_t *s ) = 0;
+    define which characters should not be drawn ( send to driver) by the font.
+    default: setInvisibleCharacters ( L" " );
+      
+    - added MultiLine rendering
+      should avoid to us CStaticText breaking text in future
+
+  - CGUIListBox
+    - changed Scrollbar LargeStepSize to ItemHeight
+      which easy enables to scroll line by line
+      
+  - CGUIScrollBar
+      - bug: event lost when moving outside the window
+      - bug: Scrollbar notifyListBox notify when the scrollbar is clicked. 
+      - changed timed event in draw to OnPostRender
+          
+  -  added GUI Image List from Reinhard Ostermeier, modified to work
+
+  - FileOpenDialog
+    changed the static text for the filename to an edit box.
+
+  - changed the interface for addEditBox to match with addStaticText
 
+  - changed the interface for addSpinBox to match with addEditBox
+
+  - added MouseWheel to Spinbox
+
+  - changed CGUITable CLICK_AREA from 3 to 12 to enable clicking on the visible marker
+
+  - CGUISpritebank
+    removed some crashes with empty Sprite banks    
+
+  - IGUIScrollBar
+    added SetMin before min was always 0
+    changed ScrollWheel Direction on horizontal to move right on wheel up, left on wheel down
+    
+  - IComboBox: added ItemData
+
+  - optimized IsVisible check in IGUIElement::draw
 
 - Image Loaders
-	- added TGA file type 2 ( grayscale uncompressed )
-	- added TGA file type (1) 8 Bit indexed color uncompressed
-	
-	ColorConverter:
-		- added convert_B8G8R8toA8R8G8B8
-		- added convert_B8G8R8A8toA8R8G8B8
-		
+  - added TGA file type 2 ( grayscale uncompressed )
+  - added TGA file type (1) 8 Bit indexed color uncompressed
+  
+  ColorConverter:
+    - added convert_B8G8R8toA8R8G8B8
+    - added convert_B8G8R8A8toA8R8G8B8
+    
 - Media Files
-	- added missing shaders and textures to map-20kdm2.
-		Taken from free implementation	
-	- ball.wav. adjusted DC-Offset, amplified to -4dB, trim cross-zero
-	- impact.wav clip-restoration, trim cross-zero
-	- added gun.md2, gun.pcx to media-files
-	- added new irrlicht logo irrlicht3.png
+  - added missing shaders and textures to map-20kdm2.
+    Taken from free implementation  
+  - ball.wav. adjusted DC-Offset, amplified to -4dB, trim cross-zero
+  - impact.wav clip-restoration, trim cross-zero
+  - added gun.md2, gun.pcx to media-files
+  - added new irrlicht logo irrlicht3.png
 
 - OctTree
-	-added
-		#define OCTTREE_PARENTTEST ( default: disabled )
-		used to leave-out children test if the parent passed a complete frustum.
-		plus: leaves out children test
-		minus: all edges have to be checked
-	- added MeshBuffer Hardware Hint Vertex to octtree
-	
+  -added
+    #define OCTTREE_PARENTTEST ( default: disabled )
+    used to leave-out children test if the parent passed a complete frustum.
+    plus: leaves out children test
+    minus: all edges have to be checked
+  - added MeshBuffer Hardware Hint Vertex to octtree
+  
 - CQuake3ShaderSceneNode:
-	- removed function releaseMesh
-		Shader doesn't copy the original mesh anymore ( saving memory )
-		so therefore this (for others often misleading ) function was removed
-	- changed constructor to take a (shared) destination meshbuffer for rendering
-		reducing vertex-memory to a half
-	- don't copy the original vertices anymore
-	- added deformvertexes autosprite
-	- added deformvertexes move
-	- added support for RTCW and Raven BSPs ( qmap2 )
-	- added polygonoffset (TODO: not perfect)
-	- added added nomipmaps
-	- added rgbgen const
-	- added alphagen
-	- added MesBuffer Hardware Hint Vertex/Index to Quake3: static geometry, dynamic indices
-	- added Quake3Explorer examples
-	- added wave noise
-	- added tcmod transform
-	- added whiteimage
-	- added collision to Quake3Explorer
-	- renamed SMD3QuaterionTag* to SMD3QuaternionTag* ( typo )	
-	- updated quake3:blendfunc
-	- added crouch to Quake3Explorer
-		(modifying the ellipsiodRadius of the camera animator )
-		added crouch to CSceneNodeAnimatorCameraFPS
-		still problems with stand up and collision
-	- Quake3MapLoader
-		modified memory allocation for faster loading
-	- Quake3LoadParam
-		added Parameter to the Mesh-Loader	
-	- added
-		The still existing missing caulking of curved surfaces.
-		using round in the coordinates doesn't solve the problem.
-		but for the demo bsp mesh it solves the problem... (luck)
-		so for now it's switchable.
-		TJUNCTION_SOLVER_ROUND
-		default:off
-		
+  - removed function releaseMesh
+    Shader doesn't copy the original mesh anymore ( saving memory )
+    so therefore this (for others often misleading ) function was removed
+  - changed constructor to take a (shared) destination meshbuffer for rendering
+    reducing vertex-memory to a half
+  - don't copy the original vertices anymore
+  - added deformvertexes autosprite
+  - added deformvertexes move
+  - added support for RTCW and Raven BSPs ( qmap2 )
+  - added polygonoffset (TODO: not perfect)
+  - added added nomipmaps
+  - added rgbgen const
+  - added alphagen
+  - added MesBuffer Hardware Hint Vertex/Index to Quake3: static geometry, dynamic indices
+  - added Quake3Explorer examples
+  - added wave noise
+  - added tcmod transform
+  - added whiteimage
+  - added collision to Quake3Explorer
+  - renamed SMD3QuaterionTag* to SMD3QuaternionTag* ( typo )  
+  - updated quake3:blendfunc
+  - added crouch to Quake3Explorer
+    (modifying the ellipsiodRadius of the camera animator )
+    added crouch to CSceneNodeAnimatorCameraFPS
+    still problems with stand up and collision
+  - Quake3MapLoader
+    modified memory allocation for faster loading
+  - Quake3LoadParam
+    added Parameter to the Mesh-Loader  
+  - added
+    The still existing missing caulking of curved surfaces.
+    using round in the coordinates doesn't solve the problem.
+    but for the demo bsp mesh it solves the problem... (luck)
+    so for now it's switchable.
+    TJUNCTION_SOLVER_ROUND
+    default:off
+    
 - BurningVideo
-	- pushed BurningsVideo to 0.40
-	- added blendfunc gl_one_minus_dst_alpha gl_one
-	- added blendfunc gl_dst_color gl_zero
-	- added blendfunc gl_dst_color src_alpha
-	- modified AlphaChannel_Ref renderer to support alpha test lessequal
-	- addded 32 Bit Index Buffer
-	- added sourceRect/destRect check to 2D-Blitter ( slower, but resolves crash )
-	- added setTextureCreationFlag video::ETCF_ALLOW_NON_POWER_2
-		Burning checks this flag and when set, it bypasses the power2 size check, 
-		which is necessary on 3D but can be avoided on 2D.
-		used on fonts automatically.
-	- added Support for Destination Alpha
-	
+  - pushed BurningsVideo to 0.40
+  - added blendfunc gl_one_minus_dst_alpha gl_one
+  - added blendfunc gl_dst_color gl_zero
+  - added blendfunc gl_dst_color src_alpha
+  - modified AlphaChannel_Ref renderer to support alpha test lessequal
+  - addded 32 Bit Index Buffer
+  - added sourceRect/destRect check to 2D-Blitter ( slower, but resolves crash )
+  - added setTextureCreationFlag video::ETCF_ALLOW_NON_POWER_2
+    Burning checks this flag and when set, it bypasses the power2 size check, 
+    which is necessary on 3D but can be avoided on 2D.
+    used on fonts automatically.
+  - added Support for Destination Alpha
+  
 - Direct3D8
-	- added 32 Bit Index Buffer
-	- compile for XBOX 
-- Direc3D9
-	- fixed crash on RTT Textures DepthBuffer freed twice.
-		added deleteAllTextures to destuctor
+  - added 32 Bit Index Buffer
+  - compile for XBOX 
+
+- Direct3D9
+  - fixed crash on RTT Textures DepthBuffer freed twice.
+    added deleteAllTextures to destructor
+
 - NullDriver
-	- removeallTextures. added setMaterial ( SMaterial() ) to clean pointers for freed textures	
+  - removeallTextures. added setMaterial ( SMaterial() ) to clean pointers for freed textures  
 
  - ISceneCollisionManager::getSceneNodeAndCollisionPointFromRay() allows selection by BB and triangle on a heirarchy of scene nodes.
 
@@ -743,6 +633,8 @@ Changes in version 1.6, TA
 -------------------------------------
 Changes in version 1.5.1 (??.?? 2009)
 
+ - bugfix: CGUIFont::getCharacterFromPos regards now kerning (found by Arras)
+
  - Fix loading of Collada files from irrEdit 1.2
 
  - Update to libpng 1.2.35, fixed issues on 64bit machines with system's libpng.
@@ -1597,8 +1489,8 @@ Changes in version 1.3 (15 Mar 2007)
    - Enable Irrlicht to change TextureAddress Mode (Clamping), for each layer separately
    - Added Texture matrices to SMaterial for all texture layers
    - Removed the anonymous union/struct access to textures and material flags.
-	  Now, Texture1..4 is removed - use Textures[i] instead
-	  The Flags[x] is replaced by setFlags(x, bool) resp. getFlags(x)
+    Now, Texture1..4 is removed - use Textures[i] instead
+    The Flags[x] is replaced by setFlags(x, bool) resp. getFlags(x)
 
 - The methods OnPreRender and OnPostRender of ISceneNode have been changed to
   OnRegisterSceneNode() and OnAnimate(). Also, they are now called at different
@@ -1683,8 +1575,8 @@ Font improvements:
 - Burning Video (the second but only complete software renderer)
   - New Compile Config BURNINGVIDEO_RENDERER_ULTRA_FAST
   - New Compile Config BURNINGVIDEO_RENDERER_FAST
-	touching the 20fps border in the demo ( P4 mobile 2Ghz ). 15fps average.
-	( Compile config Release Fast-FPU )
+  touching the 20fps border in the demo ( P4 mobile 2Ghz ). 15fps average.
+  ( Compile config Release Fast-FPU )
 
   - VertexCache for Tansformed & Light Vertices
     boost small drawPrimitive Calls ( 2DRectangle, Billboard ) and Real Index Triangles
@@ -1692,11 +1584,11 @@ Font improvements:
   - Bilinear Dither
   - clipping test ( compare instead of generic plane normal )
   - support for NOT using vertexcolor
-	#define SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
+  #define SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
 
 - added vertex to color to billboard.
-	shade top & shade down.
-	to support some static lighting effect on billboards
+  shade top & shade down.
+  to support some static lighting effect on billboards
 
 - Implemented line rendering for SoftwareDriver
 
@@ -1710,7 +1602,7 @@ Font improvements:
   and a Key Map Entry.
 
 - added param to IIImageWriteFile::writeImage
-	control Parameter for the backend ( e.g. jpeg compression level )
+  control Parameter for the backend ( e.g. jpeg compression level )
 
 - addContextMenu: CGUIEnvironment::addContextMenu set the focus on the submenu.
 
@@ -1787,7 +1679,7 @@ Font improvements:
   - Indexed Triangle List
   - initial support for quake3 Shaders and Entities
   - Shaders are parsed. When it's possible to resolve a 2 Texture Scheme it's taken
- 	Shaders exist in namespace scene::quake3
+   Shaders exist in namespace scene::quake3
   - The Example Quake3Map shows how to continue applying the Q3Shaders with SceneNodes
      ( for example animmap converts to TextureAnimator.)
      TODO: use the Irrlicht Variable Syntax to remove redundant code..
@@ -1835,19 +1727,19 @@ Font improvements:
    better kerning would need a seperate coordinate set for each symbol.
 
 - changed MD2_FRAME_SHIFT to lower framerate
-	-> lower IPol
-	problems can occur if somebody uses hardcoded frame-numbers instead
-	of Animation name...
+  -> lower IPol
+  problems can occur if somebody uses hardcoded frame-numbers instead
+  of Animation name...
 
 - changed spelling "frustrum" to "frustum"
-	-> changed also SViewFrustrum.h to SViewFrustum.h
+  -> changed also SViewFrustrum.h to SViewFrustum.h
 
 - changed Parameter AutomaticCulling from bool to enum E_CULLING_TYPE
-	to support more than two culling modes.
+  to support more than two culling modes.
 
-	added Frustum culling ( it's a copy & paste from the octree )
-	added initial bounding sphere
-		used for culling point lights..
+  added Frustum culling ( it's a copy & paste from the octree )
+  added initial bounding sphere
+    used for culling point lights..
 
 - Added getSystemMemory and getProcessorSpeedMHz for Windows and Linux to the OSOperator, submitted by Vitek.
 
@@ -1889,8 +1781,8 @@ Changes in version 1.2 (29 Nov 2006)
 - Color selection dialog added.
 
 - New GUI skin "Burning Skin".
-	it's a black & white skin. look elegant on true-color.
-	and looks ok on 1-Bit ( e.g. no vertex color in burnings video )
+  it's a black & white skin. look elegant on true-color.
+  and looks ok on 1-Bit ( e.g. no vertex color in burnings video )
 
 - GUIStatic text is correctly grayed out if disabled.
 
@@ -1929,7 +1821,7 @@ Changes in version 1.2 (29 Nov 2006)
 
 - Scolor: replaced s16 color with u16 color, replaced s32 color with u32 color to get rid of unnecessary arithmetic shift
 
-- Colorconverter: X8R8G8B8toA1R5G5B5, set Alpha High, minor: A1R5G5B5toA8R8G8B8 	changed if (a) to conditional set
+- Colorconverter: X8R8G8B8toA1R5G5B5, set Alpha High, minor: A1R5G5B5toA8R8G8B8   changed if (a) to conditional set
 
 - CImage: added boxfilter (weigthed average), (generic, slow)
 
@@ -2065,7 +1957,7 @@ Changes in version 1.0 (19 Apr 2006)
 
 - It is now possible to draw temporarily to foreign windows, by specifying a window handle when
   calling IVideoDriver::endScene(). Note: This does not work in fullscreen mode and is not
-  implemented for all devices (only for	D3D8, D3D9, Software1 and Software2, and only for Windows).
+  implemented for all devices (only for  D3D8, D3D9, Software1 and Software2, and only for Windows).
   In addition, you can also specify the source rectangle to present.
 
 - Picking is now more accurate and also works with view ports and better with orthogonal cameras.
@@ -2076,7 +1968,7 @@ Changes in version 1.0 (19 Apr 2006)
   from collision detection, picking or from serialization, etc.
 
 - Scene Nodes now have the possibility to return their type using
-	virtual ESCENE_NODE_TYPE getType().
+  virtual ESCENE_NODE_TYPE getType().
 
 - Improved support for orthogonal rendering: Skyboxes and billboards can be
   used with orthogonal cameras now, too.
@@ -3332,16 +3224,16 @@ Changes in version 0.5: (17 Feb 2004)
   I'll compile this version from now on always with optimization switched on.
 
 - Other, Minor New/Changed methods in public interfaces:
-	* buildShadowMatrix in matrix4
-	* getRotationDegrees in matrix4 (sent in by Chev)
-	* rotateVect in matrix4
-	* linear_search in array
-	* recalculateBoundingBox in MeshManipulator
-	* ISceneManager::addStaticText() now has a parameter for word wrapping
-	* getCharacterFromPos() in IGUIFont
-	* drawMeshBuffer() in IVideoDriver;
-	* interpolate() in matrix4
-	* getLast in array
+  * buildShadowMatrix in matrix4
+  * getRotationDegrees in matrix4 (sent in by Chev)
+  * rotateVect in matrix4
+  * linear_search in array
+  * recalculateBoundingBox in MeshManipulator
+  * ISceneManager::addStaticText() now has a parameter for word wrapping
+  * getCharacterFromPos() in IGUIFont
+  * drawMeshBuffer() in IVideoDriver;
+  * interpolate() in matrix4
+  * getLast in array
 
 -------------------------------------------------------------------------------------
 Changes in version 0.4.2: (13 Dec 2003)

include/IVideoDriver.h

@@ -823,8 +823,8 @@ namespace video
 		you want per-pixel fog.
 		\param rangeFog Set this to true to enable range-based vertex
 		fog. The distance from the viewer is used to compute the fog,
-		not the z-coordinate. This is better, but slower. This is only
-		available with D3D and vertex fog. */
+		not the z-coordinate. This is better, but slower. This might not
+		be available with all drivers and fog settings. */
 		virtual void setFog(SColor color=SColor(0,255,255,255),
 				E_FOG_TYPE fogType=EFT_FOG_LINEAR,
 				f32 start=50.0f, f32 end=100.0f, f32 density=0.01f,

source/Irrlicht/COpenGLDriver.cpp

@@ -2721,7 +2721,6 @@ void COpenGLDriver::drawStencilShadowVolume(const core::vector3df* triangles, s3
 }
 
 
-
 void COpenGLDriver::drawStencilShadow(bool clearStencilBuffer, video::SColor leftUpEdge,
 	video::SColor rightUpEdge, video::SColor leftDownEdge, video::SColor rightDownEdge)
 {
@@ -2788,10 +2787,20 @@ void COpenGLDriver::setFog(SColor c, E_FOG_TYPE fogType, f32 start,
 	CNullDriver::setFog(c, fogType, start, end, density, pixelFog, rangeFog);
 
 	glFogf(GL_FOG_MODE, GLfloat((fogType==EFT_FOG_LINEAR)? GL_LINEAR : (fogType==EFT_FOG_EXP)?GL_EXP:GL_EXP2));
+
 #ifdef GL_EXT_fog_coord
 	if (FeatureAvailable[IRR_EXT_fog_coord])
 		glFogi(GL_FOG_COORDINATE_SOURCE, GL_FRAGMENT_DEPTH);
 #endif
+#ifdef GL_NV_fog_distance
+	if (FeatureAvailable[IRR_NV_fog_distance])
+	{
+		if (rangeFog)
+			glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_RADIAL_NV);
+		else
+			glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV);
+	}
+#endif
 
 	if (fogType==EFT_FOG_LINEAR)
 	{
@@ -2812,7 +2821,6 @@ void COpenGLDriver::setFog(SColor c, E_FOG_TYPE fogType, f32 start,
 }
 
 
-
 //! Draws a 3d line.
 void COpenGLDriver::draw3DLine(const core::vector3df& start,
 				const core::vector3df& end, SColor color)

source/Irrlicht/CSTLMeshFileLoader.cpp

@@ -168,20 +168,6 @@ IAnimatedMesh* CSTLMeshFileLoader::createMesh(io::IReadFile* file)
 }
 
 
-//! Read RGB color
-const c8* CSTLMeshFileLoader::readColor(const c8* bufPtr, video::SColor& color, const c8* const pBufEnd) const
-{
-	const u32 COLOR_BUFFER_LENGTH = 16;
-	c8 colStr[COLOR_BUFFER_LENGTH];
-
-	color.setAlpha(255);
-	color.setRed((s32)(core::fast_atof(colStr) * 255.0f));
-	color.setGreen((s32)(core::fast_atof(colStr) * 255.0f));
-	color.setBlue((s32)(core::fast_atof(colStr) * 255.0f));
-	return bufPtr;
-}
-
-
 //! Read 3d vector of floats
 void CSTLMeshFileLoader::getNextVector(io::IReadFile* file, core::vector3df& vec, bool binary) const
 {

source/Irrlicht/CSTLMeshFileLoader.h

@@ -7,7 +7,6 @@
 
 #include "IMeshLoader.h"
 #include "irrString.h"
-#include "SColor.h"
 #include "vector3d.h"
 
 namespace irr
@@ -39,8 +38,6 @@ private:
 	// skip to next printable character after the first line break
 	void goNextLine(io::IReadFile* file) const;
 
-	//! Read RGB color
-	const c8* readColor(const c8* pBufPtr, video::SColor& color, const c8* const pBufEnd) const;
 	//! Read 3d vector of floats
 	void getNextVector(io::IReadFile* file, core::vector3df& vec, bool binary) const;
 };