lltextureatlasmanager.h
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- /**
- * @file lltextureatlasmanager.h
- * @brief LLTextureAtlasManager base class.
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_TEXTUREATLASMANAGER_H
- #define LL_TEXTUREATLASMANAGER_H
- #include "llmemory.h"
- class LLSpatialGroup ;
- class LLViewerTexture ;
- //just use it as a structure.
- class LLTextureAtlasSlot : public LLRefCount
- {
- public:
- LLTextureAtlasSlot(LLTextureAtlas* atlasp, LLSpatialGroup* groupp, S16 col, S16 row, F32 xoffset, F32 yoffset, S8 slot_width) ;
- protected:
- virtual ~LLTextureAtlasSlot();
- public:
- //
- //do not allow to change those values
- //
- //void setAtlas(LLTextureAtlas* atlasp) ;
- //void setSlotPos(S16 col, S16 row) ;
- //void setSlotWidth(S8 width) ;
- //void setTexCoordOffset(F32 xoffser, F32 yoffset) ;
- //
- void setSpatialGroup(LLSpatialGroup* groupp) ;
- void setTexCoordScale(F32 xscale, F32 yscale) ;
- void setValid() {mValid = TRUE ;}
- LLTextureAtlas* getAtlas()const {return mAtlasp;}
- LLSpatialGroup* getSpatialGroup() const {return mGroupp ;}
- S16 getSlotCol()const {return mCol;}
- S16 getSlotRow()const {return mRow;}
- S8 getSlotWidth()const{return mReservedSlotWidth;}
- BOOL isValid()const { return mValid;}
- const LLVector2* getTexCoordOffset()const {return &mTexCoordOffset;}
- const LLVector2* getTexCoordScale() const {return &mTexCoordScale;}
- void setUpdatedTime(U32 t) {mUpdatedTime = t;}
- U32 getUpdatedTime()const {return mUpdatedTime;}
- private:
- LLTextureAtlas* mAtlasp;
- S16 mCol ;//col of the slot
- S16 mRow ;//row of the slot
- S8 mReservedSlotWidth ; //slot is a square with each edge length a power-of-two number
- LLSpatialGroup* mGroupp ;
- BOOL mValid ;
- LLVector2 mTexCoordOffset ;
- LLVector2 mTexCoordScale ;
- U32 mUpdatedTime ;
- } ;
- class LLTextureAtlasManager : public LLSingleton<LLTextureAtlasManager>
- {
- private:
- typedef std::list<LLPointer<LLTextureAtlas> > ll_texture_atlas_list_t ;
- public:
- LLTextureAtlasManager();
- ~LLTextureAtlasManager();
- LLPointer<LLTextureAtlasSlot> reserveAtlasSlot(S32 sub_texture_size, S8 ncomponents,
- LLSpatialGroup* groupp, LLViewerTexture* imagep) ;
- void releaseAtlas(LLTextureAtlas* atlasp);
- BOOL canAddToAtlas(S32 w, S32 h, S8 ncomponents, LLGLenum target) ;
- private:
- std::vector<ll_texture_atlas_list_t> mAtlasMap ;
- std::vector<ll_texture_atlas_list_t> mEmptyAtlasMap ; //delay some empty atlases deletion to avoid possible creation of new atlas immediately.
- };
- #endif