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Diffstat (limited to 'indra/newview/lltextureatlasmanager.h')
| -rw-r--r-- | indra/newview/lltextureatlasmanager.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/indra/newview/lltextureatlasmanager.h b/indra/newview/lltextureatlasmanager.h new file mode 100644 index 0000000000..4dba0759f9 --- /dev/null +++ b/indra/newview/lltextureatlasmanager.h @@ -0,0 +1,111 @@ +/** + * @file lltextureatlasmanager.h + * @brief LLTextureAtlasManager base class. + * + * $LicenseInfo:firstyear=2002&license=viewergpl$ + * + * Copyright (c) 2002-2009, 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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 |