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Diffstat (limited to 'indra/newview/lltextureatlasmanager.cpp')
-rw-r--r-- | indra/newview/lltextureatlasmanager.cpp | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/indra/newview/lltextureatlasmanager.cpp b/indra/newview/lltextureatlasmanager.cpp deleted file mode 100644 index ca9d6da4db..0000000000 --- a/indra/newview/lltextureatlasmanager.cpp +++ /dev/null @@ -1,268 +0,0 @@ -/** - * @file lltextureatlasmanager.cpp - * @brief LLTextureAtlasManager class implementation. - * - * $LicenseInfo:firstyear=2002&license=viewerlgpl$ - * 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 - * $/LicenseInfo$ - */ -#include "llviewerprecompiledheaders.h" -#include "linden_common.h" -#include "llerror.h" -#include "llmath.h" -#include "lltextureatlas.h" -#include "lltextureatlasmanager.h" -#include "llspatialpartition.h" - -const S8 MAX_NUM_EMPTY_ATLAS = 2 ; -const F32 MIN_ATLAS_FULLNESS = 0.6f ; - -//********************************************************************************************* -//implementation of class LLTextureAtlasInfo -//********************************************************************************************* -LLTextureAtlasSlot::LLTextureAtlasSlot(LLTextureAtlas* atlasp, LLSpatialGroup* groupp, S16 col, S16 row, F32 xoffset, F32 yoffset, S8 slot_width) : - mAtlasp(atlasp), - mGroupp(groupp), - mCol(col), - mRow(row), - mReservedSlotWidth(slot_width), - mValid(FALSE), - mUpdatedTime(0), - mTexCoordOffset(xoffset, yoffset), - mTexCoordScale(1.f, 1.f) -{ - llassert_always(mAtlasp || mGroupp || mReservedSlotWidth) ; -} - -LLTextureAtlasSlot::~LLTextureAtlasSlot() -{ - if(mAtlasp) - { - mAtlasp->releaseSlot(mCol, mRow, mReservedSlotWidth) ; - if(mAtlasp->isEmpty()) - { - LLTextureAtlasManager::getInstance()->releaseAtlas(mAtlasp) ; - } - mAtlasp = NULL ; - } -} - -//void LLTextureAtlasSlot::setAtlas(LLTextureAtlas* atlasp) -//{ -// mAtlasp = atlasp ; -//} -//void LLTextureAtlasSlot::setSlotPos(S16 col, S16 row) -//{ -// mCol = col ; -// mRow = row ; -//} -//void LLTextureAtlasSlot::setSlotWidth(S8 width) -//{ -// //slot is a square with each edge length a power-of-two number -// mReservedSlotWidth = width ; -//} -//void LLTextureAtlasSlot::setTexCoordOffset(F32 xoffset, F32 yoffset) -//{ -// mTexCoordOffset.mV[0] = xoffset ; -// mTexCoordOffset.mV[1] = yoffset ; -//} - -void LLTextureAtlasSlot::setSpatialGroup(LLSpatialGroup* groupp) -{ - mGroupp = groupp ; -} -void LLTextureAtlasSlot::setTexCoordScale(F32 xscale, F32 yscale) -{ - mTexCoordScale.mV[0] = xscale ; - mTexCoordScale.mV[1] = yscale ; -} -//********************************************************************************************* -//END of implementation of class LLTextureAtlasInfo -//********************************************************************************************* - -//********************************************************************************************* -//implementation of class LLTextureAtlasManager -//********************************************************************************************* -LLTextureAtlasManager::LLTextureAtlasManager() : - mAtlasMap(4), - mEmptyAtlasMap(4) -{ -} - -LLTextureAtlasManager::~LLTextureAtlasManager() -{ - for(S32 i = 0 ; i < 4 ; i++) - { - for(ll_texture_atlas_list_t::iterator j = mAtlasMap[i].begin() ; j != mAtlasMap[i].end() ; ++j) - { - *j = NULL ; - } - for(ll_texture_atlas_list_t::iterator j = mEmptyAtlasMap[i].begin() ; j != mEmptyAtlasMap[i].end() ; ++j) - { - *j = NULL ; - } - - mAtlasMap[i].clear() ; - mEmptyAtlasMap[i].clear() ; - } - mAtlasMap.clear() ; - mEmptyAtlasMap.clear() ; -} - -//return TRUE if qualified -BOOL LLTextureAtlasManager::canAddToAtlas(S32 w, S32 h, S8 ncomponents, LLGLenum target) -{ - if(ncomponents < 1 || ncomponents > 4) - { - return FALSE ; - } - //only support GL_TEXTURE_2D - if(GL_TEXTURE_2D != target) - { - return FALSE ; - } - //real image size overflows - if(w < 8 || w > LLTextureAtlas::sMaxSubTextureSize || h < 8 || h > LLTextureAtlas::sMaxSubTextureSize) - { - return FALSE ; - } - - //if non-power-of-two number - if((w & (w - 1)) || (h & (h - 1))) - { - return FALSE ; - } - - return TRUE ; -} - -void LLTextureAtlasManager::releaseAtlas(LLTextureAtlas* atlasp) -{ - LLSpatialGroup* groupp = atlasp->getLastSpatialGroup() ; - while(groupp) - { - groupp->removeAtlas(atlasp, FALSE) ; - atlasp->removeLastSpatialGroup() ; - - groupp = atlasp->getLastSpatialGroup() ; - } - - S8 type = atlasp->getComponents() - 1 ; - //insert to the empty list - if(mEmptyAtlasMap[type].size() < MAX_NUM_EMPTY_ATLAS) - { - mEmptyAtlasMap[type].push_back(atlasp) ; - } - - //delete the atlasp - mAtlasMap[type].remove(atlasp) ; -} - -// -//this function reserves an appropriate slot from atlas pool for an image. -//return non-NULL if succeeds. -//Note: -//1, this function does not check if the image this slot assigned for qualifies for atlas or not, -// call LLTextureAtlasManager::canAddToAtlas(...) to do the check before calling this function. -//2, this function also dose not check if the image is already in atlas. It always assigns a new slot anyway. -//3, this function tries to group sub-textures from same spatial group into ONE atlas to improve render batching. -// -LLPointer<LLTextureAtlasSlot> LLTextureAtlasManager::reserveAtlasSlot(S32 sub_texture_size, S8 ncomponents, - LLSpatialGroup* groupp, LLViewerTexture* imagep) -{ - if(!groupp) - { - //do not insert to atlas if does not have a group. - return NULL ; - } - - //bits_len must <= 8 and is a power of two number, i.e.: must be one of these numbers: 1, 2, 4, 8. - if(sub_texture_size > LLTextureAtlas::sMaxSubTextureSize) - { - sub_texture_size = LLTextureAtlas::sMaxSubTextureSize ; - } - S8 bits_len = sub_texture_size / LLTextureAtlas::sSlotSize ; - if(bits_len < 1) - { - bits_len = 1 ; - } - - S16 col = -1, row = -1; - S8 total_bits = bits_len * bits_len ; - - //insert to the atlas reserved by the same spatial group - LLPointer<LLTextureAtlas> atlasp = groupp->getAtlas(ncomponents, total_bits) ; - if(atlasp.notNull()) - { - if(!atlasp->getNextAvailableSlot(bits_len, col, row)) - { - //failed - atlasp = NULL ; - } - } - - //search an atlas to fit for 'size' - if(!atlasp) - { - S8 atlas_index = ncomponents - 1 ; - ll_texture_atlas_list_t::iterator iter = mAtlasMap[atlas_index].begin() ; - for(; iter != mAtlasMap[atlas_index].end(); ++iter) - { - LLTextureAtlas* cur = (LLTextureAtlas*)*iter ; - if(cur->getFullness() < MIN_ATLAS_FULLNESS)//this atlas is empty enough for this group to insert more sub-textures later if necessary. - { - if(cur->getNextAvailableSlot(bits_len, col, row)) - { - atlasp = cur ; - groupp->addAtlas(atlasp) ; - break ; - } - } - } - } - - //create a new atlas if necessary - if(!atlasp) - { - if(mEmptyAtlasMap[ncomponents - 1].size() > 0) - { - //there is an empty one - atlasp = mEmptyAtlasMap[ncomponents - 1].back() ; - mEmptyAtlasMap[ncomponents - 1].pop_back() ; - } - else - { - atlasp = new LLTextureAtlas(ncomponents, 16) ; - } - mAtlasMap[ncomponents - 1].push_back(atlasp) ; - atlasp->getNextAvailableSlot(bits_len, col, row) ; - groupp->addAtlas(atlasp) ; - } - - F32 xoffset, yoffset ; - atlasp->getTexCoordOffset(col, row, xoffset, yoffset) ; - LLPointer<LLTextureAtlasSlot> slot_infop = new LLTextureAtlasSlot(atlasp, groupp, col, row, xoffset, yoffset, bits_len) ; - - return slot_infop ; -} - -//********************************************************************************************* -//END of implementation of class LLTextureAtlasManager -//********************************************************************************************* |