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https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
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388 lines
11 KiB
C++
388 lines
11 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std3d.h"
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#include "nel/3d/texture_grouped.h"
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#include "nel/3d/texture_file.h"
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#include "nel/misc/common.h"
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#include "nel/misc/path.h"
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#include <algorithm>
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namespace NL3D {
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std::map<std::string, uint> CTextureGrouped::_NameToSize;
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///=====================================================================================================
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/// This is used to get the size of a texture, with an optimisation in the case of texture files
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static inline void GetTextureSize(ITexture *tex, uint &width, uint &height)
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{
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if (tex->getClassName() == "CTextureFile")
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{
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CTextureFile *tf = static_cast<CTextureFile *>(tex);
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uint32 srcWidth, srcHeight;
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if (!tf->getFileName().empty())
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{
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try
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{
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CBitmap::loadSize(NLMISC::CPath::lookup(tf->getFileName()), srcWidth, srcHeight);
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if (srcWidth == 0 || srcHeight == 0)
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{
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nlinfo("Unable to get size of texture : %s", tf->getFileName().c_str());
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width = height = 0;
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return;
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}
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width = srcWidth;
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height = srcHeight;
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}
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catch (const NLMISC::EPathNotFound &e)
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{
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nlinfo("%s", e.what());
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width = height = 0;
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}
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catch (const NLMISC::EStream &e)
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{
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nlinfo("unable to load size from a bitmap ! name = %s", tf->getFileName().c_str());
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nlinfo("reason = %s", e.what());
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width = height = 0;
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}
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}
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else
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{
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width = height = 0;
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}
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}
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else // we must generate the texture to get its size
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{
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tex->generate();
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width = tex->getWidth();
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height = tex->getHeight();
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if (tex->getReleasable())
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{
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tex->release();
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}
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}
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}
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///=====================================================================================================
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CTextureGrouped::CTextureGrouped() : _NbTex(0)
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{
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setFilterMode(Linear, LinearMipMapOff);
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}
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///=====================================================================================================
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CTextureGrouped::CTextureGrouped(const CTextureGrouped &src) : ITexture(src)
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{
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// copy the part associated with us;
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duplicate(src);
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}
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///=====================================================================================================
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void CTextureGrouped::duplicate(const CTextureGrouped &src)
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{
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_NbTex = src._NbTex;
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TTexList texCopy(src._Textures.begin(), src._Textures.end());
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_Textures.swap(texCopy);
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TFourUVList uvCopy(_TexUVs.begin(), _TexUVs.end());
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_TexUVs.swap(uvCopy);
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}
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///=====================================================================================================
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CTextureGrouped &CTextureGrouped::operator=(const CTextureGrouped &src)
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{
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ITexture::operator=(src); // copy parent part
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duplicate(src);
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return *this;
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}
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///=====================================================================================================
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bool CTextureGrouped::areValid(CSmartPtr<ITexture> *textureTab, uint nbTex)
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{
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bool result = true;
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uint k;
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for(k = 0; k < nbTex; ++k)
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{
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textureTab[k]->generate();
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if (textureTab[k]->getWidth() != textureTab[0]->getWidth()
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|| textureTab[k]->getHeight() != textureTab[0]->getHeight()
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|| textureTab[k]->getPixelFormat() != textureTab[0]->getPixelFormat()
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)
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{
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result = false;
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break;
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}
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}
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for (k = 0; k < nbTex; ++k)
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{
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if (textureTab[k]->getReleasable()) textureTab[k]->release();
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}
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return result;
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}
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///=====================================================================================================
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void CTextureGrouped::setTextures(CSmartPtr<ITexture> *textureTab, uint nbTex, bool checkValid)
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{
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nlassert(nbTex > 0);
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if (checkValid)
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{
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if (!areValid(textureTab, nbTex))
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{
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displayIncompatibleTextureWarning(textureTab, nbTex);
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makeDummies(textureTab, nbTex);
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}
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}
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_Textures.resize(nbTex);
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std::copy(textureTab, textureTab + nbTex, _Textures.begin());
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_TexUVs.resize(nbTex);
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for(uint k = 0; k < nbTex; ++k)
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{
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// real uvs are generated during doGenerate
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_TexUVs[k].uv0.set(0.f, 0.f);
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_TexUVs[k].uv1.set(0.f, 0.f);
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_TexUVs[k].uv2.set(0.f, 0.f);
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_TexUVs[k].uv3.set(0.f, 0.f);
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}
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_DeltaUV.set(0.f, 0.f);
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_NbTex = nbTex;
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touch(); // the texture need regeneration
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nlassert(_NbTex == _Textures.size());
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}
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///=====================================================================================================
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void CTextureGrouped::doGenerate(bool async)
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{
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nlassert(_NbTex == _Textures.size());
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if (_NbTex == 0)
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{
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makeDummy();
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}
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else
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{
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// Generate the first texture to get the size
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_Textures[0]->generate();
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const uint width = _Textures[0]->getWidth(), height = _Textures[0]->getHeight();
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const uint totalHeight = height * _NbTex;
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const uint realHeight = NLMISC::raiseToNextPowerOf2(totalHeight);
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resize(width, realHeight, _Textures[0]->getPixelFormat());
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uint k;
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sint32 currY = 0;
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for(k = 0; k < _NbTex; ++k)
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{
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_Textures[k]->generate();
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if (_Textures[k]->getWidth() != width
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|| _Textures[k]->getHeight() != height
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|| _Textures[k]->getPixelFormat() != _Textures[0]->getPixelFormat())
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{
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makeDummy();
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break;
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}
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this->blit(_Textures[k], 0, currY);
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currY += height;
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}
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for(k = 0; k < _NbTex; ++k)
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{
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if ( _Textures[k]->getReleasable())
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{
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_Textures[k]->release();
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}
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}
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// save sub bitmap size so that bitmaps won't be reloaded to get their size the next time
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_NameToSize[getShareName()] = height;
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// compute the uvs
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genUVs(height);
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}
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}
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///=====================================================================================================
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void CTextureGrouped::forceGenUVs()
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{
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// retrieve size of sub-bitmap
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std::string shareName = getShareName();
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std::map<std::string, uint>::const_iterator it = _NameToSize.find(shareName);
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if (it == _NameToSize.end())
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{
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doGenerate(); // this will retrieve size of sub-bitmaps
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// TODO : only load the size... not a problem for now because textures can be cached at startup
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release();
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it = _NameToSize.find(getShareName());
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if (it == _NameToSize.end())
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{
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_TexUVs.resize(_NbTex);
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// generate default uvs
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for(uint k = 0; k < _NbTex; ++k)
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{
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TFourUV &uvs = _TexUVs[k];
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uvs.uv0.set(0.f, 0.f);
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uvs.uv1.set(1.f, 0.f);
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uvs.uv2.set(1.f, 1.f);
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uvs.uv3.set(0.f, 1.f);
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}
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return;
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}
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}
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genUVs(it->second);
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}
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///=====================================================================================================
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void CTextureGrouped::genUVs(uint subBitmapHeight)
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{
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_TexUVs.resize(_NbTex);
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//
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const uint totalHeight = subBitmapHeight * _NbTex; // *it contains the height of bitmap
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const uint realHeight = NLMISC::raiseToNextPowerOf2(totalHeight);
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// TODO : better ordering of sub-bitmaps
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const float deltaV = realHeight ? (float(totalHeight) / float(realHeight)) * (1.0f / _NbTex)
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: 0.f;
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_DeltaUV = CUV(1, deltaV);
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CUV currentUV(0, 0);
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for(uint k = 0; k < _NbTex; ++k)
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{
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TFourUV &uvs = _TexUVs[k];
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uvs.uv0 = currentUV;
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uvs.uv1 = currentUV + CUV(1, 0);
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uvs.uv2 = currentUV + _DeltaUV;
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uvs.uv3 = currentUV + CUV(0, deltaV);
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currentUV.V += deltaV;
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}
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}
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///=====================================================================================================
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void CTextureGrouped::getTextures(CSmartPtr<ITexture> *textureTab) const
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{
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CSmartPtr<ITexture> *dest = textureTab;
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for(TTexList::const_iterator it = _Textures.begin(); it != _Textures.end(); ++it, ++dest)
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{
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*dest = *it;
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}
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}
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///=====================================================================================================
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bool CTextureGrouped::supportSharing() const
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{
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// all textures in this group must support sharing for this one to support it
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for(TTexList::const_iterator it = _Textures.begin(); it != _Textures.end(); ++it)
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{
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if (!(*it)->supportSharing()) return false;
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}
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return true;
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}
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///=====================================================================================================
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std::string CTextureGrouped::getShareName() const
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{
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nlassert(supportSharing());
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std::string shareName("groupedTex:");
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for(TTexList::const_iterator it = _Textures.begin(); it != _Textures.end(); ++it)
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{
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shareName += (*it)->getShareName() + std::string("|");
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}
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return shareName;
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}
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///=====================================================================================================
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void CTextureGrouped::serial(NLMISC::IStream &f) throw(NLMISC::EStream)
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{
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f.serialVersion(1);
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if (f.isReading())
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{
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TTexList texList;
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/// read the number of textures
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uint32 nbTex;
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f.serial(nbTex);
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/// cerate a vector of textures
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ITexture *ptTex = NULL;
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texList.reserve(nbTex);
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for (uint k = 0; k < nbTex; ++k)
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{
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f.serialPolyPtr(ptTex);
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texList.push_back(ptTex);
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}
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// setup the textures
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setTextures(&texList[0], nbTex, false);
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forceGenUVs();
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touch();
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}
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else
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{
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f.serial(_NbTex);
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ITexture *ptTex;
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for (TTexList::iterator it = _Textures.begin(); it != _Textures.end(); ++it)
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{
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ptTex = *it;
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f.serialPolyPtr(ptTex);
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}
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}
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}
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///=====================================================================================================
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void CTextureGrouped::release()
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{
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ITexture::release();
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for(uint k = 0; k < _NbTex; ++k)
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{
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if ( _Textures[k]->getReleasable())
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{
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_Textures[k]->release();
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}
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}
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}
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///=====================================================================================================
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void CTextureGrouped::makeDummies(CSmartPtr<ITexture> *textureTab,uint nbTex)
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{
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for(uint k = 0; k < nbTex; ++k)
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{
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textureTab[k] = new CTextureFile("DummyTex"); // well this shouldn't exist..
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}
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}
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///=====================================================================================================
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void CTextureGrouped::displayIncompatibleTextureWarning(CSmartPtr<ITexture> *textureTab,uint nbTex)
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{
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nlwarning("=======================================================");
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nlwarning("CTextureGrouped : found incompatible textures, that differs by size or format :" );
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for(uint k = 0; k < nbTex; ++k)
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{
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if (textureTab[k])
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{
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nlwarning((textureTab[k]->getShareName()).c_str());
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}
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else
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{
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nlwarning("NULL Texture found");
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}
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}
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nlwarning("=======================================================");
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}
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} // NL3D
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