Clean up unused Forward Declarations (#16324)

irr/include/IFileSystem.h

@@ -7,10 +7,6 @@
 #include "IReferenceCounted.h"
 #include "IFileArchive.h"
 
-namespace video
-{
-class IVideoDriver;
-} // end namespace video
 namespace io
 {
 

irr/include/IGPUProgrammingServices.h

@@ -8,15 +8,9 @@
 #include "EPrimitiveTypes.h"
 #include "path.h"
 
-namespace io
-{
-class IReadFile;
-} // end namespace io
-
 namespace video
 {
 
-class IVideoDriver;
 class IShaderConstantSetCallBack;
 
 //! Interface making it possible to create and use programs running on the GPU.

irr/include/IGUIEnvironment.h

@@ -16,8 +16,6 @@ class IEventReceiver;
 
 namespace io
 {
-class IReadFile;
-class IWriteFile;
 class IFileSystem;
 } // end namespace io
 namespace video
@@ -44,7 +42,6 @@ class IGUITabControl;
 class IGUITab;
 class IGUIComboBox;
 class IGUIButton;
-class IGUIWindow;
 
 //! GUI Environment. Used as factory and manager of all other GUI elements.
 /** \par This element can create the following events of type EGUI_EVENT_TYPE (which are passed on to focused sub-elements):

irr/include/IMeshCache.h

@@ -11,8 +11,6 @@ namespace scene
 {
 class IMesh;
 class IAnimatedMesh;
-class IAnimatedMeshSceneNode;
-class IMeshLoader;
 
 //! The mesh cache stores already loaded meshes and provides an interface to them.
 /** You can access it using ISceneManager::getMeshCache(). All existing

irr/include/ISceneManager.h

@@ -11,28 +11,16 @@
 #include "SColor.h"
 #include "ESceneNodeTypes.h"
 
-struct SKeyMap;
 struct SEvent;
 
 namespace io
 {
 class IReadFile;
-class IWriteFile;
-class IFileSystem;
 } // end namespace io
 
-namespace gui
-{
-class IGUIFont;
-class IGUIEnvironment;
-} // end namespace gui
-
 namespace video
 {
 class IVideoDriver;
-class SMaterial;
-class IImage;
-class ITexture;
 } // end namespace video
 
 namespace scene
@@ -89,14 +77,12 @@ class ICameraSceneNode;
 class IDummyTransformationSceneNode;
 class IMesh;
 class SkinnedMesh;
-class IMeshBuffer;
 class IMeshCache;
 class ISceneCollisionManager;
 class IMeshLoader;
 class IMeshManipulator;
 class IMeshSceneNode;
 class ISceneNode;
-class ISceneNodeFactory;
 
 //! The Scene Manager manages scene nodes, mesh resources, cameras and all the other stuff.
 /** All Scene nodes can be created only here.

irr/include/IrrlichtDevice.h

@@ -40,7 +40,6 @@ namespace video
 {
 class IContextManager;
 class IImage;
-class ITexture;
 class IVideoDriver;
 extern "C" bool isDriverSupported(E_DRIVER_TYPE driver);
 } // end namespace video

irr/include/SVertexManipulator.h

@@ -9,9 +9,6 @@
 namespace scene
 {
 
-class IMesh;
-class IMeshBuffer;
-struct SMesh;
 
 //! Interface for vertex manipulators.
 /** You should derive your manipulator from this class if it shall be called for every vertex, getting as parameter just the vertex.

irr/src/CAnimatedMeshSceneNode.h

@@ -14,7 +14,6 @@
 
 namespace scene
 {
-class IDummyTransformationSceneNode;
 
 class CAnimatedMeshSceneNode : public IAnimatedMeshSceneNode
 {

irr/src/CFileSystem.h

@@ -10,7 +10,6 @@
 namespace io
 {
 
-class CZipReader;
 
 /*!
 	FileSystem which uses normal files and one zipfile

irr/src/CLimitReadFile.h

@@ -7,7 +7,6 @@
 #include "IReadFile.h"
 #include "irrString.h"
 
-class CUnicodeConverter;
 
 namespace io
 {

irr/src/COpenGLDriver.h

@@ -6,10 +6,6 @@
 
 #include "SIrrCreationParameters.h"
 
-class CIrrDeviceWin32;
-class CIrrDeviceLinux;
-class CIrrDeviceSDL;
-class CIrrDeviceMacOSX;
 
 #ifdef _IRR_COMPILE_WITH_OPENGL_
 

irr/src/CSceneManager.h

@@ -12,10 +12,6 @@
 #include "irrArray.h"
 #include "IMeshLoader.h"
 
-namespace io
-{
-class IFileSystem;
-}
 namespace scene
 {
 class IMeshCache;

irr/src/CXMeshFileLoader.h

@@ -14,7 +14,6 @@ class IReadFile;
 } // end namespace io
 namespace scene
 {
-class IMeshManipulator;
 
 //! Meshloader capable of loading x meshes.
 class CXMeshFileLoader : public IMeshLoader

irr/src/OpenGL/Common.h

@@ -22,7 +22,6 @@ namespace video
 
 // Forward declarations.
 
-class COpenGLCoreFeature;
 
 template <class TOpenGLDriver>
 class COpenGLCoreTexture;
@@ -38,7 +37,6 @@ typedef COpenGLCoreTexture<COpenGL3DriverBase> COpenGL3Texture;
 typedef COpenGLCoreRenderTarget<COpenGL3DriverBase, COpenGL3Texture> COpenGL3RenderTarget;
 typedef COpenGLCoreCacheHandler<COpenGL3DriverBase, COpenGL3Texture> COpenGL3CacheHandler;
 
-class OpenGLVBO;
 
 enum OpenGLSpec : u8
 {

irr/src/OpenGL/Driver.h

@@ -20,7 +20,6 @@ namespace video
 {
 struct VertexType;
 
-class COpenGL3FixedPipelineRenderer;
 class COpenGL3Renderer2D;
 
 class COpenGL3DriverBase : public CNullDriver, public IMaterialRendererServices, public COpenGL3ExtensionHandler