1252 lines
45 KiB
C++
1252 lines
45 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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#include <osg/Timer>
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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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#ifndef GL_UNPACK_CLIENT_STORAGE_APPLE
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#define GL_UNPACK_CLIENT_STORAGE_APPLE 0x85B2
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#endif
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#ifndef GL_APPLE_vertex_array_range
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#define GL_VERTEX_ARRAY_RANGE_APPLE 0x851D
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#define GL_VERTEX_ARRAY_RANGE_LENGTH_APPLE 0x851E
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#define GL_VERTEX_ARRAY_STORAGE_HINT_APPLE 0x851F
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#define GL_VERTEX_ARRAY_RANGE_POINTER_APPLE 0x8521
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#define GL_STORAGE_CACHED_APPLE 0x85BE
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#define GL_STORAGE_SHARED_APPLE 0x85BF
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#endif
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Texture::TextureObject* Texture::TextureObjectManager::generateTextureObject(unsigned int /*contextID*/,GLenum target)
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{
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GLuint id;
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glGenTextures( 1L, &id );
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return new Texture::TextureObject(id,target);
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}
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Texture::TextureObject* Texture::TextureObjectManager::generateTextureObject(unsigned int /*contextID*/,
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GLenum target,
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GLint numMipmapLevels,
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GLenum internalFormat,
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GLsizei width,
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GLsizei height,
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GLsizei depth,
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GLint border)
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{
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// no useable texture object found so return 0
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GLuint id;
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glGenTextures( 1L, &id );
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return new Texture::TextureObject(id,target,numMipmapLevels,internalFormat,width,height,depth,border);
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}
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Texture::TextureObject* Texture::TextureObjectManager::reuseTextureObject(unsigned int contextID,
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GLenum target,
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GLint numMipmapLevels,
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GLenum internalFormat,
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GLsizei width,
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GLsizei height,
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GLsizei depth,
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GLint border)
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{
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#ifdef THREAD_SAFE_GLOBJECT_DELETE_LISTS
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
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#endif
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TextureObjectList& tol = _textureObjectListMap[contextID];
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for(TextureObjectList::iterator itr = tol.begin();
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itr != tol.end();
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++itr)
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{
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if ((*itr)->match(target,numMipmapLevels,internalFormat,width,height,depth,border))
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{
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// found usable texture object.
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Texture::TextureObject* textureObject = (*itr).release();
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tol.erase(itr);
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//notify(INFO)<<"reusing texture object "<<textureObject<<std::endl;
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return textureObject;
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}
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}
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return 0;
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}
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void Texture::TextureObjectManager::addTextureObjects(Texture::TextureObjectListMap& toblm)
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{
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#ifdef THREAD_SAFE_GLOBJECT_DELETE_LISTS
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
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#endif
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for(TextureObjectListMap::iterator itr = toblm.begin();
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itr != toblm.end();
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++itr)
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{
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TextureObjectList& tol = _textureObjectListMap[itr->first];
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tol.insert(tol.end(),itr->second.begin(),itr->second.end());
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}
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}
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void Texture::TextureObjectManager::addTextureObjectsFrom(Texture& texture)
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{
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#ifdef THREAD_SAFE_GLOBJECT_DELETE_LISTS
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
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#endif
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texture.takeTextureObjects(_textureObjectListMap);
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}
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void Texture::TextureObjectManager::flushTextureObjects(unsigned int contextID,double currentTime, double& availableTime)
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{
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// if no time available don't try to flush objects.
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if (availableTime<=0.0) return;
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const osg::Timer& timer = *osg::Timer::instance();
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osg::Timer_t start_tick = timer.tick();
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double elapsedTime = 0.0;
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{
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#ifdef THREAD_SAFE_GLOBJECT_DELETE_LISTS
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
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#endif
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TextureObjectListMap::iterator tmitr = _textureObjectListMap.find(contextID);
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if (tmitr!=_textureObjectListMap.end())
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{
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TextureObjectList& tol = tmitr->second;
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// reset the time of any uninitialized objects.
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TextureObjectList::iterator itr;
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for(itr=tol.begin();
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itr!=tol.end();
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++itr)
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{
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if ((*itr)->_timeStamp==0.0) (*itr)->_timeStamp=currentTime;
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}
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double expiryTime = currentTime-_expiryDelay;
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unsigned int numTexturesDeleted = 0;
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for(itr=tol.begin();
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itr!=tol.end() && elapsedTime<availableTime;
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)
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{
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if ((*itr)->_timeStamp<expiryTime)
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{
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glDeleteTextures( 1L, &((*itr)->_id));
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itr = tol.erase(itr);
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++numTexturesDeleted;
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}
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else
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{
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++itr;
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}
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elapsedTime = timer.delta_s(start_tick,timer.tick());
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}
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if (numTexturesDeleted) notify(osg::INFO)<<"Number of Texture's deleted = "<<numTexturesDeleted<<std::endl;
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}
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}
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availableTime -= elapsedTime;
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}
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static ref_ptr<Texture::TextureObjectManager> s_textureObjectManager;
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void Texture::setTextureObjectManager(Texture::TextureObjectManager* tom)
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{
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s_textureObjectManager = tom;
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}
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Texture::TextureObjectManager* Texture::getTextureObjectManager()
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{
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if (!s_textureObjectManager) s_textureObjectManager = new Texture::TextureObjectManager;
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return s_textureObjectManager.get();
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}
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void Texture::flushTextureObjects(unsigned int contextID,double currentTime, double& availbleTime)
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{
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getTextureObjectManager()->flushTextureObjects(contextID, currentTime, availbleTime);
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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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_useHardwareMipMapGeneration(true),
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_unrefImageDataAfterApply(false),
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_clientStorageHint(false),
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_borderColor(0.0, 0.0, 0.0, 0.0),
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_borderWidth(0),
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_internalFormatMode(USE_IMAGE_DATA_FORMAT),
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_internalFormat(0),
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_use_shadow_comparison(false),
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_shadow_compare_func(LEQUAL),
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_shadow_texture_mode(LUMINANCE),
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_shadow_ambient(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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_useHardwareMipMapGeneration(text._useHardwareMipMapGeneration),
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_unrefImageDataAfterApply(text._unrefImageDataAfterApply),
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_clientStorageHint(text._clientStorageHint),
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_borderColor(text._borderColor),
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_borderWidth(text._borderWidth),
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_internalFormatMode(text._internalFormatMode),
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_internalFormat(text._internalFormat),
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_use_shadow_comparison(text._use_shadow_comparison),
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_shadow_compare_func(text._shadow_compare_func),
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_shadow_texture_mode(text._shadow_texture_mode),
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_shadow_ambient(text._shadow_ambient)
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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(_useHardwareMipMapGeneration)
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COMPARE_StateAttribute_Parameter(_internalFormatMode)
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#if 1
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COMPARE_StateAttribute_Parameter(_internalFormat)
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#endif
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COMPARE_StateAttribute_Parameter(_use_shadow_comparison)
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COMPARE_StateAttribute_Parameter(_shadow_compare_func)
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COMPARE_StateAttribute_Parameter(_shadow_texture_mode)
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COMPARE_StateAttribute_Parameter(_shadow_ambient)
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COMPARE_StateAttribute_Parameter(_unrefImageDataAfterApply)
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COMPARE_StateAttribute_Parameter(_clientStorageHint)
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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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getTextureObjectManager()->addTextureObjectsFrom(*this);
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}
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void Texture::takeTextureObjects(Texture::TextureObjectListMap& toblm)
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{
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for(unsigned int i = 0; i<_textureObjectBuffer.size();++i)
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{
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if (_textureObjectBuffer[i].valid())
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{
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//notify(INFO) << "releasing texure "<<toblm[i].size()<<std::endl;
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toblm[i].push_back(_textureObjectBuffer[i]);
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}
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}
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_textureObjectBuffer.setAllElementsTo(0);
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}
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void Texture::dirtyTextureParameters()
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{
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for(unsigned int 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(const osg::Image& image) const
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{
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GLint internalFormat = image.getInternalTextureFormat();
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if (_internalFormatMode==USE_IMAGE_DATA_FORMAT)
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{
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internalFormat = image.getInternalTextureFormat();
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}
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else if (_internalFormatMode==USE_USER_DEFINED_FORMAT)
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{
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internalFormat = _internalFormat;
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}
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else
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{
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const unsigned int 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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switch(_internalFormatMode)
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{
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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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default:
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break;
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}
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}
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_internalFormat = internalFormat;
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//osg::notify(osg::NOTICE)<<"Internal format="<<std::hex<<internalFormat<<std::dec<<std::endl;
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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 unsigned int 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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{
|
|
if(ws == CLAMP_TO_BORDER)
|
|
ws = CLAMP;
|
|
if(wt == CLAMP_TO_BORDER)
|
|
wt = CLAMP;
|
|
if(wr == CLAMP_TO_BORDER)
|
|
wr = CLAMP;
|
|
}
|
|
|
|
glTexParameteri( target, GL_TEXTURE_WRAP_S, ws );
|
|
|
|
if (target!=GL_TEXTURE_1D) glTexParameteri( target, GL_TEXTURE_WRAP_T, wt );
|
|
|
|
if (target==GL_TEXTURE_3D) glTexParameteri( target, GL_TEXTURE_WRAP_R, wr );
|
|
|
|
glTexParameteri( target, GL_TEXTURE_MIN_FILTER, _min_filter);
|
|
glTexParameteri( target, GL_TEXTURE_MAG_FILTER, _mag_filter);
|
|
|
|
if (extensions->isTextureFilterAnisotropicSupported())
|
|
{
|
|
// note, GL_TEXTURE_MAX_ANISOTROPY_EXT will either be defined
|
|
// by gl.h (or via glext.h) or by include/osg/Texture.
|
|
glTexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, _maxAnisotropy);
|
|
}
|
|
|
|
if (extensions->isTextureBorderClampSupported())
|
|
{
|
|
glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, _borderColor.ptr());
|
|
}
|
|
|
|
if (extensions->isShadowSupported() && target == GL_TEXTURE_2D)
|
|
{
|
|
if (_use_shadow_comparison)
|
|
{
|
|
glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);
|
|
glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC_ARB, _shadow_compare_func);
|
|
glTexParameteri(target, GL_DEPTH_TEXTURE_MODE_ARB, _shadow_texture_mode);
|
|
|
|
// if ambient value is 0 - it is default behaviour of GL_ARB_shadow
|
|
// no need for GL_ARB_shadow_ambient in this case
|
|
if (extensions->isShadowAmbientSupported() && _shadow_ambient > 0)
|
|
{
|
|
glTexParameterf(target, TEXTURE_COMPARE_FAIL_VALUE_ARB, _shadow_ambient);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
|
|
}
|
|
}
|
|
|
|
getTextureParameterDirty(state.getContextID()) = false;
|
|
|
|
}
|
|
|
|
void Texture::computeRequiredTextureDimensions(State& state, const osg::Image& image,GLsizei& inwidth, GLsizei& inheight,GLsizei& numMipmapLevels) const
|
|
{
|
|
const unsigned int contextID = state.getContextID();
|
|
const Extensions* extensions = getExtensions(contextID,true);
|
|
|
|
int width = Image::computeNearestPowerOfTwo(image.s()-2*_borderWidth)+2*_borderWidth;
|
|
int height = Image::computeNearestPowerOfTwo(image.t()-2*_borderWidth)+2*_borderWidth;
|
|
|
|
// cap the size to what the graphics hardware can handle.
|
|
if (width>extensions->maxTextureSize()) width = extensions->maxTextureSize();
|
|
if (height>extensions->maxTextureSize()) height = extensions->maxTextureSize();
|
|
|
|
inwidth = width;
|
|
inheight = height;
|
|
|
|
bool useHardwareMipMapGeneration = !image.isMipmap() && _useHardwareMipMapGeneration && extensions->isGenerateMipMapSupported();
|
|
|
|
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration )
|
|
{
|
|
numMipmapLevels = 1;
|
|
}
|
|
else if( image.isMipmap() )
|
|
{
|
|
numMipmapLevels = image.getNumMipmapLevels();
|
|
}
|
|
else
|
|
{
|
|
numMipmapLevels = 0;
|
|
for( ; (width || height) ;++numMipmapLevels)
|
|
{
|
|
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Texture::areAllTextureObjectsLoaded() const
|
|
{
|
|
for(unsigned int i=0;i<DisplaySettings::instance()->getMaxNumberOfGraphicsContexts();++i)
|
|
{
|
|
if (_textureObjectBuffer[i]==0) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* image, GLsizei inwidth, GLsizei inheight,GLsizei numMipmapLevels) const
|
|
{
|
|
// if we don't have a valid image we can't create a texture!
|
|
if (!image || !image->data())
|
|
return;
|
|
|
|
// get the contextID (user defined ID of 0 upwards) for the
|
|
// current OpenGL context.
|
|
const unsigned int contextID = state.getContextID();
|
|
const Extensions* extensions = getExtensions(contextID,true);
|
|
|
|
bool generateMipMapSupported = extensions->isGenerateMipMapSupported();
|
|
|
|
// select the internalFormat required for the texture.
|
|
bool compressed_image = isCompressedInternalFormat((GLenum)image->getPixelFormat());
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
|
|
|
|
bool useClientStorage = extensions->isClientStorageSupported() && getClientStorageHint();
|
|
if (useClientStorage)
|
|
{
|
|
glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE,GL_TRUE);
|
|
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_PRIORITY,0.0f);
|
|
|
|
#ifdef GL_TEXTURE_STORAGE_HINT_APPLE
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_STORAGE_HINT_APPLE , GL_STORAGE_CACHED_APPLE);
|
|
#endif
|
|
}
|
|
|
|
unsigned char* data = (unsigned char*)image->data();
|
|
|
|
|
|
bool needImageRescale = inwidth!=image->s() || inheight!=image->t();
|
|
if (needImageRescale)
|
|
{
|
|
|
|
// resize the image to power of two.
|
|
|
|
if (image->isMipmap())
|
|
{
|
|
notify(WARN)<<"Warning:: Mipmapped osg::Image not a power of two, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
else if (compressed_image)
|
|
{
|
|
notify(WARN)<<"Warning:: Compressed osg::Image not a power of two, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
unsigned int newTotalSize = osg::Image::computeRowWidthInBytes(inwidth,image->getPixelFormat(),image->getDataType(),image->getPacking())*inheight;
|
|
data = new unsigned char [newTotalSize];
|
|
|
|
if (!data)
|
|
{
|
|
notify(WARN)<<"Warning:: Not enough memory to resize image, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
if (!image->getFileName().empty()) notify(NOTICE) << "Scaling image '"<<image->getFileName()<<"' from ("<<image->s()<<","<<image->t()<<") to ("<<inwidth<<","<<inheight<<")"<<std::endl;
|
|
else notify(NOTICE) << "Scaling image from ("<<image->s()<<","<<image->t()<<") to ("<<inwidth<<","<<inheight<<")"<<std::endl;
|
|
|
|
// rescale the image to the correct size.
|
|
glPixelStorei(GL_PACK_ALIGNMENT,image->getPacking());
|
|
gluScaleImage(image->getPixelFormat(),
|
|
image->s(),image->t(),image->getDataType(),image->data(),
|
|
inwidth,inheight,image->getDataType(),data);
|
|
|
|
}
|
|
|
|
bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && generateMipMapSupported;
|
|
|
|
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration)
|
|
{
|
|
bool hardwareMipMapOn = false;
|
|
if (_min_filter != LINEAR && _min_filter != NEAREST)
|
|
{
|
|
if (useHardwareMipMapGeneration) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
|
|
hardwareMipMapOn = true;
|
|
}
|
|
|
|
if ( !compressed_image)
|
|
{
|
|
numMipmapLevels = 1;
|
|
|
|
glTexImage2D( target, 0, _internalFormat,
|
|
inwidth, inheight, _borderWidth,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
data );
|
|
|
|
}
|
|
else if (extensions->isCompressedTexImage2DSupported())
|
|
{
|
|
numMipmapLevels = 1;
|
|
|
|
GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
|
|
GLint size = ((inwidth+3)/4)*((inheight+3)/4)*blockSize;
|
|
|
|
extensions->glCompressedTexImage2D(target, 0, _internalFormat,
|
|
inwidth, inheight,0,
|
|
size,
|
|
data);
|
|
}
|
|
|
|
if (hardwareMipMapOn) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
|
|
}
|
|
else
|
|
{
|
|
// we require mip mapping.
|
|
if(image->isMipmap())
|
|
{
|
|
|
|
// image is mip mapped so we take the mip map levels from the image.
|
|
|
|
numMipmapLevels = image->getNumMipmapLevels();
|
|
|
|
int width = inwidth;
|
|
int height = inheight;
|
|
|
|
if( !compressed_image )
|
|
{
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height) ;k++)
|
|
{
|
|
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
glTexImage2D( target, k, _internalFormat,
|
|
width, height, _borderWidth,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
image->getMipmapData(k));
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
else if (extensions->isCompressedTexImage2DSupported())
|
|
{
|
|
GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
|
|
GLint size = 0;
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height) ;k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
size = ((width+3)/4)*((height+3)/4)*blockSize;
|
|
extensions->glCompressedTexImage2D(target, k, _internalFormat,
|
|
width, height, _borderWidth,
|
|
size, image->getMipmapData(k));
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
if ( !compressed_image)
|
|
{
|
|
numMipmapLevels = 0;
|
|
|
|
gluBuild2DMipmaps( target, _internalFormat,
|
|
inwidth,inheight,
|
|
(GLenum)image->getPixelFormat(), (GLenum)image->getDataType(),
|
|
data );
|
|
|
|
int width = image->s();
|
|
int height = image->t();
|
|
for( numMipmapLevels = 0 ; (width || height) ; ++numMipmapLevels)
|
|
{
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Warning:: Compressed image cannot be mip mapped"<<std::endl;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (needImageRescale)
|
|
{
|
|
// clean up the resized image.
|
|
delete [] data;
|
|
}
|
|
|
|
if (useClientStorage)
|
|
{
|
|
glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE,GL_FALSE);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image* image, GLsizei inwidth, GLsizei inheight, GLint inInternalFormat, GLint numMipmapLevels) const
|
|
{
|
|
// if we don't have a valid image we can't create a texture!
|
|
if (!image || !image->data())
|
|
return;
|
|
|
|
// image size has changed so we have to re-load the image from scratch.
|
|
if (image->s()!=inwidth || image->t()!=inheight || image->getInternalTextureFormat()!=inInternalFormat )
|
|
{
|
|
applyTexImage2D_load(state, target, image, inwidth, inheight,numMipmapLevels);
|
|
return;
|
|
}
|
|
// else image size the same as when loaded so we can go ahead and subload
|
|
|
|
|
|
|
|
// get the contextID (user defined ID of 0 upwards) for the
|
|
// current OpenGL context.
|
|
const unsigned int contextID = state.getContextID();
|
|
const Extensions* extensions = getExtensions(contextID,true);
|
|
|
|
bool generateMipMapSupported = extensions->isGenerateMipMapSupported();
|
|
|
|
// select the internalFormat required for the texture.
|
|
bool compressed_image = isCompressedInternalFormat((GLenum)image->getPixelFormat());
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
|
|
|
|
unsigned char* data = (unsigned char*)image->data();
|
|
|
|
|
|
bool needImageRescale = inwidth!=image->s() || inheight!=image->t();
|
|
if (needImageRescale)
|
|
{
|
|
|
|
// resize the image to power of two.
|
|
|
|
if (image->isMipmap())
|
|
{
|
|
notify(WARN)<<"Warning:: Mipmapped osg::Image not a power of two, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
else if (compressed_image)
|
|
{
|
|
notify(WARN)<<"Warning:: Compressed osg::Image not a power of two, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
unsigned int newTotalSize = osg::Image::computeRowWidthInBytes(inwidth,image->getPixelFormat(),image->getDataType(),image->getPacking())*inheight;
|
|
data = new unsigned char [newTotalSize];
|
|
|
|
if (!data)
|
|
{
|
|
notify(WARN)<<"Warning:: Not enough memory to resize image, cannot apply to texture."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
if (!image->getFileName().empty()) notify(NOTICE) << "Scaling image '"<<image->getFileName()<<"' from ("<<image->s()<<","<<image->t()<<") to ("<<inwidth<<","<<inheight<<")"<<std::endl;
|
|
else notify(NOTICE) << "Scaling image from ("<<image->s()<<","<<image->t()<<") to ("<<inwidth<<","<<inheight<<")"<<std::endl;
|
|
|
|
// rescale the image to the correct size.
|
|
glPixelStorei(GL_PACK_ALIGNMENT,image->getPacking());
|
|
gluScaleImage(image->getPixelFormat(),
|
|
image->s(),image->t(),image->getDataType(),image->data(),
|
|
inwidth,inheight,image->getDataType(),data);
|
|
|
|
}
|
|
|
|
bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && generateMipMapSupported;
|
|
|
|
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration)
|
|
{
|
|
|
|
bool hardwareMipMapOn = false;
|
|
if (_min_filter != LINEAR && _min_filter != NEAREST)
|
|
{
|
|
if (useHardwareMipMapGeneration) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
|
|
hardwareMipMapOn = true;
|
|
}
|
|
|
|
|
|
if (!compressed_image)
|
|
{
|
|
glTexSubImage2D( target, 0,
|
|
0, 0,
|
|
inwidth, inheight,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
data );
|
|
|
|
}
|
|
else if (extensions->isCompressedTexImage2DSupported())
|
|
{
|
|
GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
|
|
GLint size = ((inwidth+3)/4)*((inheight+3)/4)*blockSize;
|
|
|
|
extensions->glCompressedTexSubImage2D(target, 0,
|
|
0,0,
|
|
inwidth, inheight,
|
|
(GLenum)image->getPixelFormat(),
|
|
size,
|
|
data );
|
|
}
|
|
|
|
if (hardwareMipMapOn) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
|
|
}
|
|
else
|
|
{
|
|
if (image->isMipmap())
|
|
{
|
|
numMipmapLevels = image->getNumMipmapLevels();
|
|
|
|
int width = inwidth;
|
|
int height = inheight;
|
|
|
|
if( !compressed_image )
|
|
{
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height) ;k++)
|
|
{
|
|
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
glTexSubImage2D( target, k,
|
|
0, 0,
|
|
width, height,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
image->getMipmapData(k));
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
else if (extensions->isCompressedTexImage2DSupported())
|
|
{
|
|
GLint blockSize = ( _internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ? 8 : 16 );
|
|
GLint size = 0;
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height) ;k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
size = ((width+3)/4)*((height+3)/4)*blockSize;
|
|
|
|
//state.checkGLErrors("before extensions->glCompressedTexSubImage2D(");
|
|
|
|
extensions->glCompressedTexSubImage2D(target, k,
|
|
0, 0,
|
|
width, height,
|
|
(GLenum)image->getPixelFormat(),
|
|
size,
|
|
image->getMipmapData(k));
|
|
|
|
//state.checkGLErrors("after extensions->glCompressedTexSubImage2D(");
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!compressed_image)
|
|
{
|
|
|
|
numMipmapLevels = 0;
|
|
|
|
int width = inwidth;
|
|
int height = inheight;
|
|
|
|
glPixelStorei(GL_PACK_ALIGNMENT,image->getPacking());
|
|
|
|
unsigned int newTotalSize = osg::Image::computeRowWidthInBytes(width,image->getPixelFormat(),image->getDataType(),image->getPacking())*height;
|
|
unsigned char* copyData1 = new unsigned char [newTotalSize];
|
|
unsigned char* copyData2 = new unsigned char [newTotalSize];
|
|
unsigned char* tmpdata = data;
|
|
|
|
int previous_width = width;
|
|
int previous_height = height;
|
|
|
|
for( GLsizei k = 0 ; (width || height) ;++k)
|
|
{
|
|
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
|
|
if (k>0)
|
|
{
|
|
if (data!=copyData1)
|
|
{
|
|
gluScaleImage(image->getPixelFormat(),
|
|
previous_width,previous_height,image->getDataType(),data,
|
|
width,height,image->getDataType(),copyData1);
|
|
data = copyData1;
|
|
}
|
|
else
|
|
{
|
|
gluScaleImage(image->getPixelFormat(),
|
|
previous_width,previous_height,image->getDataType(),data,
|
|
width,height,image->getDataType(),copyData2);
|
|
data = copyData2;
|
|
}
|
|
}
|
|
|
|
glTexSubImage2D( target, k,
|
|
0, 0,
|
|
width, height,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
data);
|
|
|
|
previous_width = width;
|
|
previous_height = height;
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
|
|
delete [] copyData1;
|
|
delete [] copyData2;
|
|
|
|
// restore the data paramters so it can be deleted if it was allocated locally via needImageRescale
|
|
data = tmpdata;
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Warning:: Compressed image cannot be mip mapped"<<std::endl;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (needImageRescale)
|
|
{
|
|
// clean up the resized image.
|
|
delete [] data;
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Static map to manage the deletion of texture objects are the right time.
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
|
#include <map>
|
|
#include <set>
|
|
|
|
|
|
void Texture::compileGLObjects(State& state) const
|
|
{
|
|
apply(state);
|
|
}
|
|
|
|
void Texture::releaseGLObjects(State* state) const
|
|
{
|
|
if (!state) const_cast<Texture*>(this)->dirtyTextureObject();
|
|
else
|
|
{
|
|
unsigned int contextID = state->getContextID();
|
|
if (_textureObjectBuffer[contextID].valid())
|
|
{
|
|
#ifdef THREAD_SAFE_GLOBJECT_DELETE_LISTS
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(getTextureObjectManager()->_mutex);
|
|
#endif
|
|
|
|
getTextureObjectManager()->_textureObjectListMap[contextID].push_back(_textureObjectBuffer[contextID]);
|
|
_textureObjectBuffer[contextID] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
typedef buffered_value< ref_ptr<Texture::Extensions> > BufferedExtensions;
|
|
static BufferedExtensions s_extensions;
|
|
|
|
Texture::Extensions* Texture::getExtensions(unsigned int contextID,bool createIfNotInitalized)
|
|
{
|
|
if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Extensions;
|
|
return s_extensions[contextID].get();
|
|
}
|
|
|
|
void Texture::setExtensions(unsigned int contextID,Extensions* extensions)
|
|
{
|
|
s_extensions[contextID] = extensions;
|
|
}
|
|
|
|
Texture::Extensions::Extensions()
|
|
{
|
|
setupGLExtensions();
|
|
}
|
|
|
|
Texture::Extensions::Extensions(const Extensions& rhs):
|
|
Referenced()
|
|
{
|
|
_isMultiTexturingSupported = rhs._isMultiTexturingSupported;
|
|
_isTextureFilterAnisotropicSupported = rhs._isTextureFilterAnisotropicSupported;
|
|
_isTextureCompressionARBSupported = rhs._isTextureCompressionARBSupported;
|
|
_isTextureCompressionS3TCSupported = rhs._isTextureCompressionS3TCSupported;
|
|
_isTextureMirroredRepeatSupported = rhs._isTextureMirroredRepeatSupported;
|
|
_isTextureEdgeClampSupported = rhs._isTextureEdgeClampSupported;
|
|
_isTextureBorderClampSupported = rhs._isTextureBorderClampSupported;
|
|
_isGenerateMipMapSupported = rhs._isGenerateMipMapSupported;
|
|
|
|
_maxTextureSize = rhs._maxTextureSize;
|
|
|
|
_glCompressedTexImage2D = rhs._glCompressedTexImage2D;
|
|
|
|
_isShadowSupported = rhs._isShadowSupported;
|
|
_isShadowAmbientSupported = rhs._isShadowAmbientSupported;
|
|
|
|
_isClientStorageSupported = rhs._isClientStorageSupported;
|
|
}
|
|
|
|
void Texture::Extensions::lowestCommonDenominator(const Extensions& rhs)
|
|
{
|
|
if (!rhs._isMultiTexturingSupported) _isMultiTexturingSupported = false;
|
|
|
|
if (!rhs._isTextureFilterAnisotropicSupported) _isTextureFilterAnisotropicSupported = false;
|
|
if (!rhs._isTextureMirroredRepeatSupported) _isTextureMirroredRepeatSupported = false;
|
|
if (!rhs._isTextureEdgeClampSupported) _isTextureEdgeClampSupported = false;
|
|
if (!rhs._isTextureBorderClampSupported) _isTextureBorderClampSupported = false;
|
|
|
|
if (!rhs._isTextureCompressionARBSupported) _isTextureCompressionARBSupported = false;
|
|
if (!rhs._isTextureCompressionS3TCSupported) _isTextureCompressionS3TCSupported = false;
|
|
|
|
if (!rhs._isGenerateMipMapSupported) _isGenerateMipMapSupported = false;
|
|
|
|
if (rhs._maxTextureSize<_maxTextureSize) _maxTextureSize = rhs._maxTextureSize;
|
|
if (rhs._numTextureUnits<_numTextureUnits) _numTextureUnits = rhs._numTextureUnits;
|
|
|
|
if (!rhs._glCompressedTexImage2D) _glCompressedTexImage2D = 0;
|
|
if (!rhs._glCompressedTexSubImage2D) _glCompressedTexSubImage2D = 0;
|
|
if (!rhs._glGetCompressedTexImage) _glGetCompressedTexImage = 0;
|
|
|
|
if (!rhs._isShadowSupported) _isShadowSupported = false;
|
|
if (!rhs._isShadowAmbientSupported) _isShadowAmbientSupported = false;
|
|
|
|
if (!rhs._isClientStorageSupported) _isClientStorageSupported = false;
|
|
}
|
|
|
|
void Texture::Extensions::setupGLExtensions()
|
|
{
|
|
float glVersion = atof( (const char *)glGetString( GL_VERSION ) );
|
|
|
|
_isMultiTexturingSupported = ( glVersion >= 1.3 ) ||
|
|
isGLExtensionSupported("GL_ARB_multitexture") ||
|
|
isGLExtensionSupported("GL_EXT_multitexture");
|
|
_isTextureFilterAnisotropicSupported = isGLExtensionSupported("GL_EXT_texture_filter_anisotropic");
|
|
_isTextureCompressionARBSupported = ( glVersion >= 1.3 ) ||
|
|
isGLExtensionSupported("GL_ARB_texture_compression");
|
|
_isTextureCompressionS3TCSupported = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
|
|
_isTextureMirroredRepeatSupported = ( glVersion >= 1.4 ) ||
|
|
isGLExtensionSupported("GL_IBM_texture_mirrored_repeat") ||
|
|
isGLExtensionSupported("GL_ARB_texture_mirrored_repeat");
|
|
_isTextureEdgeClampSupported = ( glVersion >= 1.2 ) ||
|
|
isGLExtensionSupported("GL_EXT_texture_edge_clamp") ||
|
|
isGLExtensionSupported("GL_SGIS_texture_edge_clamp");
|
|
_isTextureBorderClampSupported = ( glVersion >= 1.3 ) ||
|
|
isGLExtensionSupported("GL_ARB_texture_border_clamp");
|
|
_isGenerateMipMapSupported = (strncmp((const char*)glGetString(GL_VERSION),"1.4",3)>=0) ||
|
|
isGLExtensionSupported("GL_SGIS_generate_mipmap");
|
|
_isShadowSupported = isGLExtensionSupported("GL_ARB_shadow");
|
|
_isShadowAmbientSupported = isGLExtensionSupported("GL_ARB_shadow_ambient");
|
|
|
|
_isClientStorageSupported = isGLExtensionSupported("GL_APPLE_client_storage");
|
|
|
|
glGetIntegerv(GL_MAX_TEXTURE_SIZE,&_maxTextureSize);
|
|
|
|
char *ptr;
|
|
if( (ptr = getenv("OSG_MAX_TEXTURE_SIZE")) != 0)
|
|
{
|
|
GLint osg_max_size = atoi(ptr);
|
|
|
|
if (osg_max_size<_maxTextureSize)
|
|
{
|
|
|
|
_maxTextureSize = osg_max_size;
|
|
}
|
|
}
|
|
|
|
if( _isMultiTexturingSupported )
|
|
{
|
|
glGetIntegerv(GL_MAX_TEXTURE_UNITS,&_numTextureUnits);
|
|
}
|
|
else
|
|
{
|
|
_numTextureUnits = 1;
|
|
}
|
|
|
|
_glCompressedTexImage2D = getGLExtensionFuncPtr("glCompressedTexImage2D","glCompressedTexImage2DARB");
|
|
_glCompressedTexSubImage2D = getGLExtensionFuncPtr("glCompressedTexSubImage2D","glCompressedTexSubImage2DARB");
|
|
_glGetCompressedTexImage = getGLExtensionFuncPtr("glGetCompressedTexImage","glGetCompressedTexImageARB");;
|
|
}
|
|
|
|
void Texture::Extensions::glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data) const
|
|
{
|
|
if (_glCompressedTexImage2D)
|
|
{
|
|
typedef void (APIENTRY * CompressedTexImage2DArbProc) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data);
|
|
((CompressedTexImage2DArbProc)_glCompressedTexImage2D)(target, level, internalformat, width, height, border, imageSize, data);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glCompressedTexImage2D not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
|
|
}
|
|
|
|
void Texture::Extensions::glCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data) const
|
|
{
|
|
if (_glCompressedTexImage2D)
|
|
{
|
|
typedef void (APIENTRY * CompressedTexSubImage2DArbProc) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data);
|
|
((CompressedTexSubImage2DArbProc)_glCompressedTexSubImage2D)(target, level, xoffset, yoffset, width, height, format, imageSize, data);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glCompressedTexImage2D not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
|
|
}
|
|
void Texture::Extensions::glGetCompressedTexImage(GLenum target, GLint level, GLvoid *data) const
|
|
{
|
|
if (_glGetCompressedTexImage)
|
|
{
|
|
typedef void (APIENTRY * GetCompressedTexImageArbProc) (GLenum target, GLint level, GLvoid *data);
|
|
((GetCompressedTexImageArbProc)_glGetCompressedTexImage)(target, level, data);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glGetCompressedTexImage not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|