port of LL renderpipeline/Kirstens S19 pipeline for bridging to Viewer 2 texture system

1 files changed, 112 insertions, 0 deletions

diff --git a/linden/indra/newview/lltextureatlasmanager.h b/linden/indra/newview/lltextureatlasmanager.h
new file mode 100644
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+++ b/linden/indra/newview/lltextureatlasmanager.h
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+/** 
+ * @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://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 LLViewerImage ;
+
+//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, LLViewerImage* 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