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/**
* @file lltextureatlasmanager.h
* @brief LLTextureAtlasManager base class.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#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>
{
LLSINGLETON(LLTextureAtlasManager);
~LLTextureAtlasManager();
typedef std::list<LLPointer<LLTextureAtlas> > ll_texture_atlas_list_t ;
public:
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
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