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515 lines
15 KiB
C++
515 lines
15 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_TEXTURE_H
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#define NL_TEXTURE_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/smart_ptr.h"
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#include "nel/misc/stream.h"
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#include "nel/misc/rect.h"
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#include "nel/misc/bitmap.h"
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#include "nel/misc/bitmap.h"
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#include "nel/misc/object_arena_allocator.h"
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#include <string>
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#include <list>
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#include <map>
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namespace NL3D
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{
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using NLMISC::CBitmap;
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class IDriver;
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// ****************************************************************************
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// List typedef.
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class ITextureDrvInfos;
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class CTextureDrvShare;
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class TTexDrvInfoPtrMap : public std::map< std::string, ITextureDrvInfos*> {};
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typedef std::list<CTextureDrvShare*> TTexDrvSharePtrList;
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typedef TTexDrvInfoPtrMap::iterator ItTexDrvInfoPtrMap;
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typedef TTexDrvSharePtrList::iterator ItTexDrvSharePtrList;
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// Class for interaction of textures with Driver.
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// ITextureDrvInfos represent the real data of the texture, stored into the driver (eg: just a GLint for opengl).
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class ITextureDrvInfos : public NLMISC::CRefCount
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{
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private:
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// _Driver==NULL if ITexture::supportSharing()==false
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IDriver *_Driver;
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ItTexDrvInfoPtrMap _DriverIterator;
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public:
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ITextureDrvInfos(IDriver *drv, ItTexDrvInfoPtrMap it) {_Driver= drv; _DriverIterator= it;}
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ITextureDrvInfos(class IDriver& driver);
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virtual ~ITextureDrvInfos(void);
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// For Debug info. return the memory cost of this texture
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virtual uint getTextureMemoryUsed() const =0;
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};
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// Many ITexture may point to the same ITextureDrvInfos, through CTextureDrvShare.
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class CTextureDrvShare : public NLMISC::CRefCount
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{
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private:
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IDriver *_Driver;
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ItTexDrvSharePtrList _DriverIterator;
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// The ITexture associated (for debug purpose)
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class ITexture *_OwnerTexture;
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public:
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NLMISC::CSmartPtr<ITextureDrvInfos> DrvTexture;
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public:
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CTextureDrvShare(IDriver *drv, ItTexDrvSharePtrList it, ITexture *owner) {_Driver= drv; _DriverIterator= it; _OwnerTexture= owner;}
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~CTextureDrvShare();
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// get the ITexture that owns this DrvShare. for Dbg purpose
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class ITexture *getOwnerTexture() const {return _OwnerTexture;}
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};
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// ****************************************************************************
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/**
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* Interface for textures
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*
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* Sharing System note: The deriver may implement sharing system by implement supportSharing() and getShareName().
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* Such a texture may return a Unique Name for sharing. If the driver already has this texture, it will reuse it.
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* As a direct impact, you cannot invalidate part of the textures with shared texture. This is logic, since the Unique
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* sharname of the texture must represent all of it.
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*
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*/
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/* *** IMPORTANT ********************
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* *** IF YOU MODIFY THE STRUCTURE OF THIS CLASS, PLEASE INCREMENT IDriver::InterfaceVersion TO INVALIDATE OLD DRIVER DLL
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* **********************************
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*/
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class ITexture : public CBitmap, public NLMISC::CRefCount, public NLMISC::IStreamable
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{
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public:
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NL_USES_DEFAULT_ARENA_OBJECT_ALLOCATOR // for fast alloc
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// Those enums MUST be the same than in UTexture!!
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enum TWrapMode
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{
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Repeat= 0,
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Clamp,
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WrapModeCount
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};
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enum TUploadFormat
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{
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Auto= 0,
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RGBA8888,
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RGBA4444,
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RGBA5551,
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RGB888,
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RGB565,
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DXTC1,
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DXTC1Alpha,
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DXTC3,
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DXTC5,
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Luminance,
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Alpha,
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AlphaLuminance,
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DsDt,
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UploadFormatCount
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};
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/** Magnification mode.
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* Same behavior as OpenGL.
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*/
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enum TMagFilter
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{
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Nearest=0,
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Linear,
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MagFilterCount
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};
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/** Minifying mode.
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* Same behavior as OpenGL. If the bitmap has no mipmap, and mipmap is required, then mipmaps are computed.
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*/
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enum TMinFilter
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{
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NearestMipMapOff=0,
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NearestMipMapNearest,
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NearestMipMapLinear,
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LinearMipMapOff,
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LinearMipMapNearest,
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LinearMipMapLinear,
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MinFilterCount
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};
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/** Category String
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*/
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class CTextureCategory : public NLMISC::CRefCount
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{
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public:
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std::string Name;
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CTextureCategory() {}
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CTextureCategory(const std::string &name) : Name(name) {}
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};
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public:
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/// Object.
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// @{
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/// By default, a texture is releasable.
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ITexture();
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/// see operator=.
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ITexture(const ITexture &tex) : CBitmap(), CRefCount(), IStreamable() {operator=(tex);}
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/// Need a virtual dtor.
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virtual ~ITexture();
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/// The operator= do not copy drv info, and set touched=true. _Releasable, WrapMode and UploadFormat are copied.
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ITexture &operator=(const ITexture &tex);
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// @}
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/// \name Texture parameters.
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/** By default, parameters are:
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- WrapS==Repeat
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- WrapT==Repeat
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- UploadFormat== Auto
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- MagFilter== Linear.
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- MinFilter= LinearMipMapLinear.
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NB: if multiple ITexture acces the same data via the sharing system (such as a CTextureFile), then:
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- WrapS/WrapT is LOCAL for each ITexture (ie each ITexture will have his own Wrap mode) => no duplication
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is made.
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- UploadFormat may duplicate the texture in video memory. There is one texture per different UploadFormat.
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- MinFilter may duplicate the texture in video memory in the same way, whether the texture has mipmap or not.
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*/
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// @{
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void setWrapS(TWrapMode mode);
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void setWrapT(TWrapMode mode);
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TWrapMode getWrapS() const {return _WrapS;}
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TWrapMode getWrapT() const {return _WrapT;}
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/** Replace the uploaded format of the texture.
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* If "Auto", the driver use CBitmap::getPixelFormat() to find the best associated pixelFormat.
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* When no alpha is wanted (RGB, Luminance....), texture default output is 1.0.
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* For "Alpha" mode, RGB output is (0,0,0).
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*/
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void setUploadFormat(TUploadFormat pf);
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TUploadFormat getUploadFormat() const {return _UploadFormat;}
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virtual void setFilterMode(TMagFilter magf, TMinFilter minf);
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TMagFilter getMagFilter() const {return _MagFilter;}
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TMinFilter getMinFilter() const {return _MinFilter;}
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bool mipMapOff() const {return _MinFilter==NearestMipMapOff || _MinFilter==LinearMipMapOff;}
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bool mipMapOn() const {return !mipMapOff();}
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// @}
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/**
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* This method invalidates all the texture surface. When the driver calls generate, the
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* texture will rebuild all the texture and the driver will update it.
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*
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* \see isAllInvalidated(), generate(), touchRect(), touched(), _ListInvalidRect
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*/
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void touch()
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{
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_ListInvalidRect.clear ();
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_Touched=true;
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_GoodGenerate= false;
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}
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/**
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* This method invalidates a rectangle of the texture surface. When the driver calls generate, the
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* texture could rebuild only this part of texture and the driver will update only those rectangles.
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*
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* This method is incompatible with textures which support sharing (see class description).
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* This method is incompatible with compressed textures.
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* This method is incompatible with cube textures.
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*
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* \see isAllInvalidated(), generate(), touch(), touched(), _ListInvalidRect
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*/
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void touchRect(const NLMISC::CRect& rect)
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{
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// The texture must not support sharing....
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nlassert(!supportSharing());
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nlassert(!isTextureCube());
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// Don't invalidate the rectangle if the full texture is already invalidated.
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if (!isAllInvalidated ())
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{
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// Add the region to invalidate list
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_ListInvalidRect.push_back (rect);
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// Touch flag
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_Touched=true;
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}
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_GoodGenerate= false;
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}
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/**
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* Return whether texture can be released. If it returns true, the driver will release the texture
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* after generate it and upload it into the videomemory by calling release(). If it returns false,
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* the driver won't release the texture.
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*
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* \return true if texture can be released, false else
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* \see setReleasable(), generate()
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*/
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bool getReleasable() const { return _Releasable; }
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/**
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* Set if texture can be released
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* If it is true, the driver will release the texture after generating it and upload it into the
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* videomemory by calling release(). If it is false, the driver won't release the texture.
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*
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* \see getReleasable(), generate()
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* \param true if texture can be released, false else
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*/
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void setReleasable(bool r) { _Releasable = r; }
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/**
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* Generate the texture pixels.
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*
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* This method is called by the driver when it needs to generate pixels of the texture. If the
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* texture is used for the first time or if it is touched, the driver will call this method.
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* For exemple, a texture file will load the bitmap in this method.
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*
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* If the invalidate rect list is empty, generate() rebuild all the texture.
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* If the invalidate rect list is not empty, generate() rebuilds only the invalidate rectangles
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* in the list.
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*
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* Don't clear the touch flag or the invalid rectangle list until updating the texture in generate().
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* It's the generate()'s caller jobs.
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*
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* After generation, if the texture is releasable, the driver will release the texture by calling
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* release().
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*
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* NB: a flag is maintained to see if the generated bitmap is coherent with texture description (see touch*()).
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* So if you do {generate(); generate();}, you only get 1 real bitmap generation...
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*
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* If, after the doGenerate, the bitmap format is compressed (DXTC) and no mipmaps have been generated, the
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* mipmap are disabled beacause the user probably don't want the driver to unpacks the texture, generates the mipmaps
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* and repacks the dxtc texture (that takes a lot of CPU time).
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*
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* \param async tells the texture if the call is made asynchronously or not.
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*
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* \see isAllInvalidated(), touch(), touched(), touchRect(), clearTouched(), _ListInvalidRect
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* \see getReleasable(), setReleasable()
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*/
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void generate(bool async = false)
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{
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if(!_GoodGenerate)
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{
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doGenerate(async);
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_GoodGenerate=true;
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}
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}
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/** Advanced. erase the _GoodGenerate=true. Special if you want to setup directly the bitmap without
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* using generate().
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* USE IT WITH CARE!! (used by the CAsyncTextureManager)
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*/
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void validateGenerateFlag() {_GoodGenerate=true;}
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/**
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* Release the texure (free memory)
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*/
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virtual void release() { reset(); _GoodGenerate= false; }
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/**
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* Does this texture support sharing system.
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*/
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virtual bool supportSharing() const {return false;}
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/**
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* Return the Unique ident/name of the texture, used for Driver sharing caps.
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* Deriver should add a prefix for their texture type. eg "file::pipoland", "noise::4-4-2" etc....
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*/
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virtual std::string getShareName() const {return std::string();}
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/**
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* Tells if the texture has been setuped by the driver.
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*/
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bool setupedIntoDriver() const
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{
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return TextureDrvShare!=NULL;
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}
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/// Release the Driver info for this texture (if any). Call it with care.
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void releaseDriverSetup();
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/// Does this texture allow the driver to degrade
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virtual bool allowDegradation() const { return false; }
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/// serial ITexture basic infos (clamp ...).
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virtual void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
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/** Select a texture among several other (if this texture is a set of texture such as CTextureMultiFile)
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* The default does nothing
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*/
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virtual void selectTexture(uint /* index */) {}
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/// Test whether this texture is selectable
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virtual bool isSelectable() const { return false; }
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/** If this texture is selectable, build a non selectable version of this texture that is setupped with the given slot.
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* NB : If this texture is selectable, you are ensured that the return pointer is not 'this'
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*/
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virtual ITexture *buildNonSelectableVersion(uint /* index */) { return this; }
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/// Cubic textures.
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// @{
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/// Does this texture is a cube texture
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virtual bool isTextureCube() const { return false; }
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// @}
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// is this texture a bumpmap ?
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virtual bool isBumpMap() const { return false; }
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// is this texture a bloom texture ?
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virtual bool isBloomTexture() const { return false; }
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// For Texture profiling. The smartPtr is kept (NULL default)
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void setTextureCategory(NLMISC::CSmartPtr<CTextureCategory> &textCat) {_TextureCategory= textCat;}
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/** Render target texture
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* Active / disable render target abilities for this texture.
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*/
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void setRenderTarget (bool enable);
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/** Render target texture
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* Get render target abilities for this texture.
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*/
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bool getRenderTarget () const { return _RenderTarget; }
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// get the texture category
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CTextureCategory *getTextureCategory() const {return _TextureCategory;}
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// ****************************
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// Private part.
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protected:
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// Derived texture should set it to true when they are updated.
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bool _Touched : 1;
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bool _FilterOrWrapModeTouched : 1;
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/**
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* Generate the texture pixels.
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*
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* If the invalidate rect list is empty, generate() must rebuild all the texture.
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* If the invalidate rect list is not empty, generate() rebuilds only the invalidate rectangles
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* in the list.
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*
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* \see isAllInvalidated(), touch(), touched(), touchRect(), clearTouched(), _ListInvalidRect, generate()
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* \see getReleasable(), setReleasable()
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*/
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virtual void doGenerate(bool async = false) = 0;
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private:
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bool _GoodGenerate;
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bool _Releasable;
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bool _RenderTarget;
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TUploadFormat _UploadFormat;
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TWrapMode _WrapS;
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TWrapMode _WrapT;
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TMinFilter _MinFilter;
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TMagFilter _MagFilter;
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NLMISC::CSmartPtr<CTextureCategory> _TextureCategory;
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public:
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// Private Part!!!. For Driver Only.
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//==================================
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NLMISC::CRefPtr<CTextureDrvShare> TextureDrvShare;
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/**
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* List of invalided rectangle. If the list is empty, generate() will rebuild all the texture.
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*
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* \see isAllInvalidated(), generate(), touch(), touchRect(), touched()
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*/
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std::list<NLMISC::CRect> _ListInvalidRect;
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/**
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* Return true if ALL the texture is invalidate, else return false.
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*/
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bool isAllInvalidated () const
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{
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return _Touched&&(_ListInvalidRect.begin()==_ListInvalidRect.end());
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}
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/**
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* This method return the touched flag. If it is true, the driver will call generate to rebuild the texture.
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*
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* \see isAllInvalidated(), generate(), touch(), touchRect(), _ListInvalidRect
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*/
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bool touched (void)
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{
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return _Touched;
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}
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/** See if filter mode or wrap mode have been touched.
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* If this is the case, the driver should resetup them for that texture (If driver stores filter & wrap mode
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* per texture (OpenGL) rather than globally (D3D))
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*/
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bool filterOrWrapModeTouched() const { return _FilterOrWrapModeTouched; }
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/*
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* Clear the touched flag and the invalid rectangle list
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*
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* \see isAllInvalidated(), generate(), touch(), touched(), touchRect(), _ListInvalidRect
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*/
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void clearTouched(void)
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{
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_Touched=false;
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_ListInvalidRect.clear();
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}
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void clearFilterOrWrapModeTouched()
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{
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_FilterOrWrapModeTouched = false;
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}
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};
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// inlines
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inline void ITexture::setWrapS(TWrapMode mode)
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{
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if (_WrapS == mode) return;
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_WrapS = mode;
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_FilterOrWrapModeTouched = true;
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}
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inline void ITexture::setWrapT(TWrapMode mode)
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{
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if (_WrapT == mode) return;
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_WrapT = mode;
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_FilterOrWrapModeTouched = true;
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}
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} // NL3D
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#endif // NL_TEXTURE_H
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/* End of texture.h */
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