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Diffstat (limited to 'indra/newview/lltextureatlas.cpp')
-rw-r--r-- | indra/newview/lltextureatlas.cpp | 416 |
1 files changed, 0 insertions, 416 deletions
diff --git a/indra/newview/lltextureatlas.cpp b/indra/newview/lltextureatlas.cpp deleted file mode 100644 index 1c8e4f796e..0000000000 --- a/indra/newview/lltextureatlas.cpp +++ /dev/null @@ -1,416 +0,0 @@ -/** - * @file lltextureatlas.cpp - * @brief LLTextureAtlas 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 "llimage.h" -#include "llmath.h" -#include "llgl.h" -#include "llrender.h" -#include "lltextureatlas.h" - -//------------------- -S16 LLTextureAtlas::sMaxSubTextureSize = 64 ; -S16 LLTextureAtlas::sSlotSize = 32 ; - -#ifndef DEBUG_ATLAS -#define DEBUG_ATLAS 0 -#endif - -#ifndef DEBUG_USAGE_BITS -#define DEBUG_USAGE_BITS 0 -#endif -//************************************************************************************************************** -LLTextureAtlas::LLTextureAtlas(U8 ncomponents, S16 atlas_dim) : - LLViewerTexture(atlas_dim * sSlotSize, atlas_dim * sSlotSize, ncomponents, TRUE), - mAtlasDim(atlas_dim), - mNumSlotsReserved(0), - mMaxSlotsInAtlas(atlas_dim * atlas_dim) -{ - generateEmptyUsageBits() ; - - //generate an empty texture - generateGLTexture() ; - LLPointer<LLImageRaw> image_raw = new LLImageRaw(mFullWidth, mFullHeight, mComponents); - createGLTexture(0, image_raw, 0); - image_raw = NULL; -} - -LLTextureAtlas::~LLTextureAtlas() -{ - if(mSpatialGroupList.size() > 0) - { - LL_ERRS() << "Not clean up the spatial groups!" << LL_ENDL ; - } - releaseUsageBits() ; -} - -//virtual -S8 LLTextureAtlas::getType() const -{ - return 0; //LLViewerTexture::ATLAS_TEXTURE ; -} - -void LLTextureAtlas::getTexCoordOffset(S16 col, S16 row, F32& xoffset, F32& yoffset) -{ - xoffset = (F32)col / mAtlasDim ; - yoffset = (F32)row / mAtlasDim ; -} - -void LLTextureAtlas::getTexCoordScale(S32 w, S32 h, F32& xscale, F32& yscale) -{ - xscale = (F32)w / (mAtlasDim * sSlotSize) ; - yscale = (F32)h / (mAtlasDim * sSlotSize) ; -} - -//insert a texture piece into the atlas -LLGLuint LLTextureAtlas::insertSubTexture(LLImageGL* source_gl_tex, S32 discard_level, const LLImageRaw* raw_image, S16 slot_col, S16 slot_row) -{ - if(!getTexName()) - { - return 0 ; - } - - S32 w = raw_image->getWidth() ; - S32 h = raw_image->getHeight() ; - if(w < 8 || w > sMaxSubTextureSize || h < 8 || h > sMaxSubTextureSize) - { - //size overflow - return 0 ; - } - - BOOL res = gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, getTexName()); - if (!res) - { - LL_ERRS() << "bindTexture failed" << LL_ENDL; - } - - GLint xoffset = sSlotSize * slot_col ; - GLint yoffset = sSlotSize * slot_row ; - - if(!source_gl_tex->preAddToAtlas(discard_level, raw_image)) - { - return 0 ; - } - - glTexSubImage2D(GL_TEXTURE_2D, 0, xoffset, yoffset, w, h, - mGLTexturep->getPrimaryFormat(), mGLTexturep->getFormatType(), raw_image->getData()); - - source_gl_tex->postAddToAtlas() ; - return getTexName(); -} - -//release a sub-texture slot from the atlas -void LLTextureAtlas::releaseSlot(S16 slot_col, S16 slot_row, S8 slot_width) -{ - unmarkUsageBits(slot_width, slot_col, slot_row) ; - mNumSlotsReserved -= slot_width * slot_width ; -} - -BOOL LLTextureAtlas::isEmpty() const -{ - return !mNumSlotsReserved ; -} - -BOOL LLTextureAtlas::isFull(S8 to_be_reserved) const -{ - return mNumSlotsReserved + to_be_reserved > mMaxSlotsInAtlas ; -} -F32 LLTextureAtlas::getFullness() const -{ - return (F32)mNumSlotsReserved / mMaxSlotsInAtlas ; -} - -void LLTextureAtlas::addSpatialGroup(LLSpatialGroup* groupp) -{ - if(groupp && !hasSpatialGroup(groupp)) - { - mSpatialGroupList.push_back(groupp); - } -} - -void LLTextureAtlas::removeSpatialGroup(LLSpatialGroup* groupp) -{ - if(groupp) - { - mSpatialGroupList.remove(groupp); - } -} - -void LLTextureAtlas::clearSpatialGroup() -{ - mSpatialGroupList.clear(); -} -void LLTextureAtlas::removeLastSpatialGroup() -{ - mSpatialGroupList.pop_back() ; -} - -LLSpatialGroup* LLTextureAtlas::getLastSpatialGroup() -{ - if(mSpatialGroupList.size() > 0) - { - return mSpatialGroupList.back() ; - } - return NULL ; -} - -BOOL LLTextureAtlas::hasSpatialGroup(LLSpatialGroup* groupp) -{ - for(std::list<LLSpatialGroup*>::iterator iter = mSpatialGroupList.begin(); iter != mSpatialGroupList.end() ; ++iter) - { - if(*iter == groupp) - { - return TRUE ; - } - } - return FALSE ; -} - -//-------------------------------------------------------------------------------------- -//private -void LLTextureAtlas::generateEmptyUsageBits() -{ - S32 col_len = (mAtlasDim + 7) >> 3 ; - mUsageBits = new U8*[mAtlasDim] ; - *mUsageBits = new U8[mAtlasDim * col_len] ; - - mUsageBits[0] = *mUsageBits ; - for(S32 i = 1 ; i < mAtlasDim ; i++) - { - mUsageBits[i] = mUsageBits[i-1] + col_len ; - - for(S32 j = 0 ; j < col_len ; j++) - { - //init by 0 for all bits. - mUsageBits[i][j] = 0 ; - } - } - - //do not forget mUsageBits[0]! - for(S32 j = 0 ; j < col_len ; j++) - { - //init by 0 for all bits. - mUsageBits[0][j] = 0 ; - } - - mTestBits = NULL ; -#if DEBUG_USAGE_BITS - //------------ - //test - mTestBits = new U8*[mAtlasDim] ; - *mTestBits = new U8[mAtlasDim * mAtlasDim] ; - mTestBits[0] = *mTestBits ; - for(S32 i = 1 ; i < mAtlasDim ; i++) - { - mTestBits[i] = mTestBits[i-1] + mAtlasDim ; - - for(S32 j = 0 ; j < mAtlasDim ; j++) - { - //init by 0 for all bits. - mTestBits[i][j] = 0 ; - } - } - - for(S32 j = 0 ; j < mAtlasDim ; j++) - { - //init by 0 for all bits. - mTestBits[0][j] = 0 ; - } -#endif -} - -void LLTextureAtlas::releaseUsageBits() -{ - if(mUsageBits) - { - delete[] *mUsageBits ; - delete[] mUsageBits ; - } - mUsageBits = NULL ; - - //test - if( mTestBits) - { - delete[] *mTestBits; - delete[] mTestBits; - } - mTestBits = NULL ; -} - -void LLTextureAtlas::markUsageBits(S8 bits_len, U8 mask, S16 col, S16 row) -{ - S16 x = col >> 3 ; - - for(S8 i = 0 ; i < bits_len ; i++) - { - mUsageBits[row + i][x] |= mask ; - } - -#if DEBUG_USAGE_BITS - //test - for(S8 i = row ; i < row + bits_len ; i++) - { - for(S8 j = col ; j < col + bits_len ; j++) - { - mTestBits[i][j] = 1 ; - } - } -#endif -} - -void LLTextureAtlas::unmarkUsageBits(S8 bits_len, S16 col, S16 row) -{ - S16 x = col >> 3 ; - U8 mask = 1 ; - for(S8 i = 1 ; i < bits_len ; i++) - { - mask |= (1 << i) ; - } - mask <<= (col & 7) ; - mask = ~mask ; - - for(S8 i = 0 ; i < bits_len ; i++) - { - mUsageBits[row + i][x] &= mask ; - } - -#if DEBUG_USAGE_BITS - //test - for(S8 i = row ; i < row + bits_len ; i++) - { - for(S8 j = col ; j < col + bits_len ; j++) - { - mTestBits[i][j] = 0 ; - } - } -#endif -} - -//return true if any of bits in the range marked. -BOOL LLTextureAtlas::areUsageBitsMarked(S8 bits_len, U8 mask, S16 col, S16 row) -{ - BOOL ret = FALSE ; - S16 x = col >> 3 ; - - for(S8 i = 0 ; i < bits_len ; i++) - { - if(mUsageBits[row + i][x] & mask) - { - ret = TRUE ; - break ; - //return TRUE ; - } - } - -#if DEBUG_USAGE_BITS - //test - BOOL ret2 = FALSE ; - for(S8 i = row ; i < row + bits_len ; i++) - { - for(S8 j = col ; j < col + bits_len ; j++) - { - if(mTestBits[i][j]) - { - ret2 = TRUE ; - } - } - } - - if(ret != ret2) - { - LL_ERRS() << "bits map corrupted." << LL_ENDL ; - } -#endif - return ret ;//FALSE ; -} - -//---------------------------------------------------------------------- -// -//index order: Z order, i.e.: -// |-----|-----|-----|-----| -// | 10 | 11 | 14 | 15 | -// |-----|-----|-----|-----| -// | 8 | 9 | 12 | 13 | -// |-----|-----|-----|-----| -// | 2 | 3 | 6 | 7 | -// |-----|-----|-----|-----| -// | 0 | 1 | 4 | 5 | -// |-----|-----|-----|-----| -void LLTextureAtlas::getPositionFromIndex(S16 index, S16& col, S16& row) -{ - col = 0 ; - row = 0 ; - - S16 index_copy = index ; - for(S16 i = 0 ; index_copy && i < 16 ; i += 2) - { - col |= ((index & (1 << i)) >> i) << (i >> 1) ; - row |= ((index & (1 << (i + 1))) >> (i + 1)) << (i >> 1) ; - index_copy >>= 2 ; - } -} -void LLTextureAtlas::getIndexFromPosition(S16 col, S16 row, S16& index) -{ - index = 0 ; - S16 col_copy = col ; - S16 row_copy = row ; - for(S16 i = 0 ; (col_copy || row_copy) && i < 16 ; i++) - { - index |= ((col & 1 << i) << i) | ((row & 1 << i) << ( i + 1)) ; - col_copy >>= 1 ; - row_copy >>= 1 ; - } -} -//---------------------------------------------------------------------- -//return TRUE if succeeds. -BOOL LLTextureAtlas::getNextAvailableSlot(S8 bits_len, S16& col, S16& row) -{ - S16 index_step = bits_len * bits_len ; - - U8 mask = 1 ; - for(S8 i = 1 ; i < bits_len ; i++) - { - mask |= (1 << i) ; - } - - U8 cur_mask ; - for(S16 index = 0 ; index < mMaxSlotsInAtlas ; index += index_step) - { - getPositionFromIndex(index, col, row) ; - - cur_mask = mask << (col & 7) ; - if(!areUsageBitsMarked(bits_len, cur_mask, col, row)) - { - markUsageBits(bits_len, cur_mask, col, row) ; - mNumSlotsReserved += bits_len * bits_len ; - - return TRUE ; - } - } - - return FALSE ; -} |