9aaf5a560b
caches so that they use a std::vector<> swap on the internal data structures when ready to delete to minimize the amount of time that a race condition condition can happen.
591 lines
20 KiB
C++
591 lines
20 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library 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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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/GLExtensions>
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#include <osg/Image>
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#include <osg/Texture>
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#include <osg/State>
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#include <osg/Notify>
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#include <osg/GLU>
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using namespace osg;
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#ifndef GL_TEXTURE_WRAP_R
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#define GL_TEXTURE_WRAP_R 0x8072
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#endif
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// static cache of deleted display lists which can only
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// by completely deleted once the appropriate OpenGL context
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// is set.
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typedef std::vector<GLuint> TextureObjectVector;
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typedef std::map<osg::uint,TextureObjectVector> DeletedTextureObjectCache;
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static DeletedTextureObjectCache s_deletedTextureObjectCache;
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void Texture::deleteTextureObject(uint contextID,GLuint handle)
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{
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if (handle!=0)
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{
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// insert the handle into the cache for the appropriate context.
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s_deletedTextureObjectCache[contextID].push_back(handle);
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}
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}
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void Texture::flushDeletedTextureObjects(uint contextID)
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{
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DeletedTextureObjectCache::iterator citr = s_deletedTextureObjectCache.find(contextID);
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if (citr!=s_deletedTextureObjectCache.end())
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{
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TextureObjectVector textureObjectSet;
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// this swap will transfer the content of and empty citr->second
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// in one quick pointer change.
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textureObjectSet.swap(citr->second);
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for(TextureObjectVector::iterator titr=textureObjectSet.begin();
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titr!=textureObjectSet.end();
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++titr)
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{
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glDeleteTextures( 1L, &(*titr ));
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}
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}
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}
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Texture::Texture():
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_wrap_s(CLAMP),
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_wrap_t(CLAMP),
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_wrap_r(CLAMP),
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_min_filter(LINEAR_MIPMAP_LINEAR), // trilinear
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_mag_filter(LINEAR),
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_maxAnisotropy(1.0f),
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_borderColor(0.0, 0.0, 0.0, 0.0),
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_internalFormatMode(USE_IMAGE_DATA_FORMAT),
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_internalFormat(0)
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{
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}
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Texture::Texture(const Texture& text,const CopyOp& copyop):
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StateAttribute(text,copyop),
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_wrap_s(text._wrap_s),
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_wrap_t(text._wrap_t),
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_wrap_r(text._wrap_r),
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_min_filter(text._min_filter),
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_mag_filter(text._mag_filter),
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_maxAnisotropy(text._maxAnisotropy),
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_borderColor(text._borderColor),
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_internalFormatMode(text._internalFormatMode),
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_internalFormat(text._internalFormat)
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{
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}
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Texture::~Texture()
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{
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// delete old texture objects.
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dirtyTextureObject();
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}
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int Texture::compareTexture(const Texture& rhs) const
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{
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COMPARE_StateAttribute_Parameter(_wrap_s)
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COMPARE_StateAttribute_Parameter(_wrap_t)
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COMPARE_StateAttribute_Parameter(_wrap_r)
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COMPARE_StateAttribute_Parameter(_min_filter)
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COMPARE_StateAttribute_Parameter(_mag_filter)
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COMPARE_StateAttribute_Parameter(_maxAnisotropy)
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COMPARE_StateAttribute_Parameter(_internalFormatMode)
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COMPARE_StateAttribute_Parameter(_internalFormat)
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return 0;
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}
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void Texture::setWrap(WrapParameter which, WrapMode wrap)
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{
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switch( which )
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{
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case WRAP_S : _wrap_s = wrap; dirtyTextureParameters(); break;
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case WRAP_T : _wrap_t = wrap; dirtyTextureParameters(); break;
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case WRAP_R : _wrap_r = wrap; dirtyTextureParameters(); break;
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default : notify(WARN)<<"Error: invalid 'which' passed Texture::setWrap("<<(unsigned int)which<<","<<(unsigned int)wrap<<")"<<std::endl; break;
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}
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}
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Texture::WrapMode Texture::getWrap(WrapParameter which) const
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{
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switch( which )
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{
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case WRAP_S : return _wrap_s;
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case WRAP_T : return _wrap_t;
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case WRAP_R : return _wrap_r;
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default : notify(WARN)<<"Error: invalid 'which' passed Texture::getWrap(which)"<<std::endl; return _wrap_s;
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}
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}
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void Texture::setFilter(FilterParameter which, FilterMode filter)
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{
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switch( which )
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{
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case MIN_FILTER : _min_filter = filter; dirtyTextureParameters(); break;
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case MAG_FILTER : _mag_filter = filter; dirtyTextureParameters(); break;
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default : notify(WARN)<<"Error: invalid 'which' passed Texture::setFilter("<<(unsigned int)which<<","<<(unsigned int)filter<<")"<<std::endl; break;
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}
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}
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Texture::FilterMode Texture::getFilter(FilterParameter which) const
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{
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switch( which )
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{
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case MIN_FILTER : return _min_filter;
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case MAG_FILTER : return _mag_filter;
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default : notify(WARN)<<"Error: invalid 'which' passed Texture::getFilter(which)"<< std::endl; return _min_filter;
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}
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}
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void Texture::setMaxAnisotropy(float anis)
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{
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if (_maxAnisotropy!=anis)
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{
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_maxAnisotropy = anis;
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dirtyTextureParameters();
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}
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}
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/** Force a recompile on next apply() of associated OpenGL texture objects.*/
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void Texture::dirtyTextureObject()
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{
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for(uint i=0;i<_handleList.size();++i)
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{
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if (_handleList[i] != 0)
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{
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Texture::deleteTextureObject(i,_handleList[i]);
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_handleList[i] = 0;
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}
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}
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}
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void Texture::dirtyTextureParameters()
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{
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for(uint i=0;i<_texParametersDirtyList.size();++i)
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{
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_texParametersDirtyList[i] = 1;
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}
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}
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void Texture::computeInternalFormatWithImage(osg::Image& image) const
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{
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const uint contextID = 0; // state.getContextID(); // set to 0 right now, assume same paramters for each graphics context...
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const Extensions* extensions = getExtensions(contextID,true);
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// static bool s_ARB_Compression = isGLExtensionSupported("GL_ARB_texture_compression");
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// static bool s_S3TC_Compression = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
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GLint internalFormat = image.getInternalTextureFormat();
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switch(_internalFormatMode)
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{
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case(USE_IMAGE_DATA_FORMAT):
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internalFormat = image.getInternalTextureFormat();
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break;
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case(USE_ARB_COMPRESSION):
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if (extensions->isTextureCompressionARBSupported())
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{
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switch(image.getPixelFormat())
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{
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case(1): internalFormat = GL_COMPRESSED_ALPHA_ARB; break;
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case(2): internalFormat = GL_COMPRESSED_LUMINANCE_ALPHA_ARB; break;
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case(3): internalFormat = GL_COMPRESSED_RGB_ARB; break;
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case(4): internalFormat = GL_COMPRESSED_RGBA_ARB; break;
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case(GL_RGB): internalFormat = GL_COMPRESSED_RGB_ARB; break;
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case(GL_RGBA): internalFormat = GL_COMPRESSED_RGBA_ARB; break;
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case(GL_ALPHA): internalFormat = GL_COMPRESSED_ALPHA_ARB; break;
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case(GL_LUMINANCE): internalFormat = GL_COMPRESSED_LUMINANCE_ARB; break;
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case(GL_LUMINANCE_ALPHA): internalFormat = GL_COMPRESSED_LUMINANCE_ALPHA_ARB; break;
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case(GL_INTENSITY): internalFormat = GL_COMPRESSED_INTENSITY_ARB; break;
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}
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}
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else internalFormat = image.getInternalTextureFormat();
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break;
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case(USE_S3TC_DXT1_COMPRESSION):
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if (extensions->isTextureCompressionS3TCSupported())
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{
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switch(image.getPixelFormat())
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{
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case(3): internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break;
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case(4): internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break;
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case(GL_RGB): internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break;
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case(GL_RGBA): internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break;
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default: internalFormat = image.getInternalTextureFormat(); break;
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}
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}
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else internalFormat = image.getInternalTextureFormat();
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break;
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case(USE_S3TC_DXT3_COMPRESSION):
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if (extensions->isTextureCompressionS3TCSupported())
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{
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switch(image.getPixelFormat())
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{
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case(3):
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case(GL_RGB): internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break;
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case(4):
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case(GL_RGBA): internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break;
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default: internalFormat = image.getInternalTextureFormat(); break;
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}
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}
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else internalFormat = image.getInternalTextureFormat();
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break;
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case(USE_S3TC_DXT5_COMPRESSION):
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if (extensions->isTextureCompressionS3TCSupported())
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{
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switch(image.getPixelFormat())
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{
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case(3):
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case(GL_RGB): internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break;
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case(4):
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case(GL_RGBA): internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break;
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default: internalFormat = image.getInternalTextureFormat(); break;
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}
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}
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else internalFormat = image.getInternalTextureFormat();
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break;
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case(USE_USER_DEFINED_FORMAT):
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internalFormat = _internalFormat;
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break;
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}
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_internalFormat = internalFormat;
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}
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bool Texture::isCompressedInternalFormat() const
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{
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return isCompressedInternalFormat(getInternalFormat());
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}
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bool Texture::isCompressedInternalFormat(GLint internalFormat) const
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{
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switch(internalFormat)
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{
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case(GL_COMPRESSED_ALPHA_ARB):
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case(GL_COMPRESSED_INTENSITY_ARB):
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case(GL_COMPRESSED_LUMINANCE_ALPHA_ARB):
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case(GL_COMPRESSED_LUMINANCE_ARB):
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case(GL_COMPRESSED_RGBA_ARB):
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case(GL_COMPRESSED_RGB_ARB):
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case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT):
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case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT):
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case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT):
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case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT):
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return true;
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default:
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return false;
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}
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}
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void Texture::applyTexParameters(GLenum target, State& state) const
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{
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// get the contextID (user defined ID of 0 upwards) for the
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// current OpenGL context.
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const uint contextID = state.getContextID();
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const Extensions* extensions = getExtensions(contextID,true);
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WrapMode ws = _wrap_s, wt = _wrap_t, wr = _wrap_r;
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// GL_IBM_texture_mirrored_repeat, fall-back REPEAT
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if (!extensions->isTextureMirroredRepeatSupported())
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{
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if (ws == MIRROR)
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ws = REPEAT;
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if (wt == MIRROR)
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wt = REPEAT;
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if (wr == MIRROR)
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wr = REPEAT;
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}
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// GL_EXT_texture_edge_clamp, fall-back CLAMP
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if (!extensions->isTextureEdgeClampSupported())
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{
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if (ws == CLAMP_TO_EDGE)
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ws = CLAMP;
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if (wt == CLAMP_TO_EDGE)
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wt = CLAMP;
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if (wr == CLAMP_TO_EDGE)
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wr = CLAMP;
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}
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if(!extensions->isTextureBorderClampSupported())
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{
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if(ws == CLAMP_TO_BORDER)
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ws = CLAMP;
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if(wt == CLAMP_TO_BORDER)
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wt = CLAMP;
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if(wr == CLAMP_TO_BORDER)
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wr = CLAMP;
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}
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glTexParameteri( target, GL_TEXTURE_WRAP_S, ws );
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glTexParameteri( target, GL_TEXTURE_WRAP_T, wt );
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glTexParameteri( target, GL_TEXTURE_WRAP_R, wr );
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glTexParameteri( target, GL_TEXTURE_MIN_FILTER, _min_filter);
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glTexParameteri( target, GL_TEXTURE_MAG_FILTER, _mag_filter);
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if (_maxAnisotropy>1.0f && extensions->isTextureFilterAnisotropicSupported())
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{
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// note, GL_TEXTURE_MAX_ANISOTROPY_EXT will either be defined
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// by gl.h (or via glext.h) or by include/osg/Texture.
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glTexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, _maxAnisotropy);
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}
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if (extensions->isTextureBorderClampSupported())
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{
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glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, _borderColor.ptr());
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}
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getTextureParameterDirty(state.getContextID()) = false;
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}
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void Texture::applyTexImage2D(GLenum target, Image* image, State& state, GLsizei& inwidth, GLsizei& inheight,GLsizei& numMimpmapLevels) const
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{
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// if we don't have a valid image we can't create a texture!
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if (!image || !image->data())
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return;
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// get the contextID (user defined ID of 0 upwards) for the
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// current OpenGL context.
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const uint contextID = state.getContextID();
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const Extensions* extensions = getExtensions(contextID,true);
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// update the modified tag to show that it is upto date.
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getModifiedTag(contextID) = image->getModifiedTag();
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// compute the internal texture format, this set the _internalFormat to an appropriate value.
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computeInternalFormat();
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// select the internalFormat required for the texture.
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bool compressed = isCompressedInternalFormat(_internalFormat);
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image->ensureValidSizeForTexturing(extensions->maxTextureSize());
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glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
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if( _min_filter == LINEAR || _min_filter == NEAREST )
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{
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if ( !compressed )
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{
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numMimpmapLevels = 1;
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glTexImage2D( target, 0, _internalFormat,
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image->s(), image->t(), 0,
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(GLenum)image->getPixelFormat(),
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(GLenum)image->getDataType(),
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image->data() );
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}
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else if (extensions->isCompressedTexImage2DSupported())
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{
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numMimpmapLevels = 1;
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GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
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GLint size = ((image->s()+3)/4)*((image->t()+3)/4)*blockSize;
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extensions->glCompressedTexImage2D(target, 0, _internalFormat,
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image->s(), image->t(),0,
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size,
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image->data());
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}
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}
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else
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{
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if(!image->isMipmap())
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{
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numMimpmapLevels = 1;
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gluBuild2DMipmaps( target, _internalFormat,
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image->s(),image->t(),
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(GLenum)image->getPixelFormat(), (GLenum)image->getDataType(),
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image->data() );
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}
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else
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{
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numMimpmapLevels = image->getNumMipmapLevels();
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int width = image->s();
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int height = image->t();
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if( !compressed )
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{
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for( GLsizei k = 0 ; k < numMimpmapLevels && (width || height) ;k++)
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{
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if (width == 0)
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width = 1;
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if (height == 0)
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height = 1;
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glTexImage2D( target, k, _internalFormat,
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width, height, 0,
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(GLenum)image->getPixelFormat(),
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(GLenum)image->getDataType(),
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image->getMipmapData(k));
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width >>= 1;
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height >>= 1;
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}
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}
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else if (extensions->isCompressedTexImage2DSupported())
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{
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GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
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GLint size = 0;
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for( GLsizei k = 0 ; k < numMimpmapLevels && (width || height) ;k++)
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{
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if (width == 0)
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width = 1;
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if (height == 0)
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height = 1;
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size = ((width+3)/4)*((height+3)/4)*blockSize;
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extensions->glCompressedTexImage2D(target, k, _internalFormat,
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width, height, 0, size, image->getMipmapData(k));
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width >>= 1;
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height >>= 1;
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}
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}
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}
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}
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inwidth = image->s();
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inheight = image->t();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// Static map to manage the deletion of texture objects are the right time.
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//////////////////////////////////////////////////////////////////////////////////////////////
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#include <map>
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#include <set>
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void Texture::compile(State& state) const
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{
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apply(state);
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}
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typedef buffered_value< ref_ptr<Texture::Extensions> > BufferedExtensions;
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static BufferedExtensions s_extensions;
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const Texture::Extensions* Texture::getExtensions(uint contextID,bool createIfNotInitalized)
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{
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if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Extensions;
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return s_extensions[contextID].get();
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}
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void Texture::setExtensions(uint contextID,Extensions* extensions)
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{
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s_extensions[contextID] = extensions;
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}
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Texture::Extensions::Extensions()
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{
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setupGLExtenions();
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}
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Texture::Extensions::Extensions(const Extensions& rhs):
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Referenced()
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{
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_isTextureFilterAnisotropicSupported = rhs._isTextureFilterAnisotropicSupported;
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_isTextureMirroredRepeatSupported = rhs._isTextureMirroredRepeatSupported;
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_isTextureEdgeClampSupported = rhs._isTextureEdgeClampSupported;
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_isTextureBorderClampSupported = rhs._isTextureBorderClampSupported;
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_isTextureCompressionARBSupported = rhs._isTextureCompressionARBSupported;
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_isTextureCompressionS3TCSupported = rhs._isTextureCompressionS3TCSupported;
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_maxTextureSize = rhs._maxTextureSize;
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_glCompressedTexImage2D = rhs._glCompressedTexImage2D;
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}
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void Texture::Extensions::lowestCommonDenominator(const Extensions& rhs)
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{
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if (!rhs._isTextureFilterAnisotropicSupported) _isTextureFilterAnisotropicSupported = false;
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if (!rhs._isTextureMirroredRepeatSupported) _isTextureMirroredRepeatSupported = false;
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if (!rhs._isTextureEdgeClampSupported) _isTextureEdgeClampSupported = false;
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if (!rhs._isTextureBorderClampSupported) _isTextureBorderClampSupported = false;
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if (!rhs._isTextureCompressionARBSupported) _isTextureCompressionARBSupported = false;
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if (!rhs._isTextureCompressionS3TCSupported) _isTextureCompressionS3TCSupported = false;
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if (rhs._maxTextureSize<_maxTextureSize) _maxTextureSize = rhs._maxTextureSize;
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if (!rhs._glCompressedTexImage2D) _glCompressedTexImage2D = 0;
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}
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void Texture::Extensions::setupGLExtenions()
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{
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_isTextureFilterAnisotropicSupported = isGLExtensionSupported("GL_EXT_texture_filter_anisotropic");
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_isTextureMirroredRepeatSupported = isGLExtensionSupported("GL_IBM_texture_mirrored_repeat");
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_isTextureEdgeClampSupported = isGLExtensionSupported("GL_EXT_texture_edge_clamp");
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_isTextureBorderClampSupported = isGLExtensionSupported("GL_ARB_texture_border_clamp");
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_isTextureCompressionARBSupported = isGLExtensionSupported("GL_ARB_texture_compression");
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_isTextureCompressionS3TCSupported = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
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glGetIntegerv(GL_MAX_TEXTURE_SIZE,&_maxTextureSize);
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char *ptr;
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if( (ptr = getenv("OSG_MAX_TEXTURE_SIZE")) != 0)
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{
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GLint osg_max_size = atoi(ptr);
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if (osg_max_size<_maxTextureSize)
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{
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_maxTextureSize = osg_max_size;
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}
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}
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_glCompressedTexImage2D = getGLExtensionFuncPtr("glCompressedTexImage2DARB");;
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}
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void Texture::Extensions::glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data) const
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{
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if (_glCompressedTexImage2D)
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{
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typedef void (APIENTRY * CompressedTexImage2DArbProc) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data);
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((CompressedTexImage2DArbProc)_glCompressedTexImage2D)(target, level, internalformat, width, height, border, imageSize, data);
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}
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else
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{
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notify(WARN)<<"Error: glCompressedTexImage2D not supported by OpenGL driver"<<std::endl;
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}
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}
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