112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/**
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* @file lltextureatlasmanager.h
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* @brief LLTextureAtlasManager base class.
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*
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* $LicenseInfo:firstyear=2002&license=viewergpl$
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*
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* Copyright (c) 2002-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlife.com/developers/opensource/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at http://secondlife.com/developers/opensource/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#ifndef LL_TEXTUREATLASMANAGER_H
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#define LL_TEXTUREATLASMANAGER_H
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#include "llmemory.h"
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class LLSpatialGroup ;
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class LLViewerTexture ;
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//just use it as a structure.
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class LLTextureAtlasSlot : public LLRefCount
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{
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public:
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LLTextureAtlasSlot(LLTextureAtlas* atlasp, LLSpatialGroup* groupp, S16 col, S16 row, F32 xoffset, F32 yoffset, S8 slot_width) ;
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protected:
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virtual ~LLTextureAtlasSlot();
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public:
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//
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//do not allow to change those values
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//
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//void setAtlas(LLTextureAtlas* atlasp) ;
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//void setSlotPos(S16 col, S16 row) ;
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//void setSlotWidth(S8 width) ;
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//void setTexCoordOffset(F32 xoffser, F32 yoffset) ;
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//
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void setSpatialGroup(LLSpatialGroup* groupp) ;
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void setTexCoordScale(F32 xscale, F32 yscale) ;
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void setValid() {mValid = TRUE ;}
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LLTextureAtlas* getAtlas()const {return mAtlasp;}
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LLSpatialGroup* getSpatialGroup() const {return mGroupp ;}
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S16 getSlotCol()const {return mCol;}
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S16 getSlotRow()const {return mRow;}
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S8 getSlotWidth()const{return mReservedSlotWidth;}
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BOOL isValid()const { return mValid;}
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const LLVector2* getTexCoordOffset()const {return &mTexCoordOffset;}
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const LLVector2* getTexCoordScale() const {return &mTexCoordScale;}
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void setUpdatedTime(U32 t) {mUpdatedTime = t;}
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U32 getUpdatedTime()const {return mUpdatedTime;}
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private:
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LLTextureAtlas* mAtlasp;
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S16 mCol ;//col of the slot
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S16 mRow ;//row of the slot
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S8 mReservedSlotWidth ; //slot is a square with each edge length a power-of-two number
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LLSpatialGroup* mGroupp ;
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BOOL mValid ;
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LLVector2 mTexCoordOffset ;
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LLVector2 mTexCoordScale ;
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U32 mUpdatedTime ;
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} ;
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class LLTextureAtlasManager : public LLSingleton<LLTextureAtlasManager>
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{
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private:
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typedef std::list<LLPointer<LLTextureAtlas> > ll_texture_atlas_list_t ;
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public:
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LLTextureAtlasManager();
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~LLTextureAtlasManager();
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LLPointer<LLTextureAtlasSlot> reserveAtlasSlot(S32 sub_texture_size, S8 ncomponents,
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LLSpatialGroup* groupp, LLViewerTexture* imagep) ;
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void releaseAtlas(LLTextureAtlas* atlasp);
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BOOL canAddToAtlas(S32 w, S32 h, S8 ncomponents, LLGLenum target) ;
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private:
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std::vector<ll_texture_atlas_list_t> mAtlasMap ;
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std::vector<ll_texture_atlas_list_t> mEmptyAtlasMap ; //delay some empty atlases deletion to avoid possible creation of new atlas immediately.
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};
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#endif
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