gltexmanager.cpp
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- /*
- * ===========================================================================
- * PRODUCTION $Log: gltexmanager.cpp,v $
- * PRODUCTION Revision 1000.2 2004/06/01 20:51:05 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.3
- * PRODUCTION
- * ===========================================================================
- */
- /* $Id: gltexmanager.cpp,v 1000.2 2004/06/01 20:51:05 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Authors: Mike DiCuccio
- *
- * File Description:
- *
- */
- #include <ncbi_pch.hpp>
- #include <gui/opengl/glteximage.hpp>
- #include <gui/opengl/gltexmanager.hpp>
- #include <util/image/image_io.hpp>
- BEGIN_NCBI_SCOPE
- // our list of images
- CTexManager::TImages CTexManager::sm_TexImages;
- // mutex guarding access to our images
- DEFINE_STATIC_FAST_MUTEX(sm_Mutex);
- //
- // GetTexture()
- // request an image by filename. if this image is already loaded, return the
- // previously loaded image.
- //
- CTexImage* CTexManager::GetTexture(const string& filename)
- {
- CFastMutexGuard LOCK(sm_Mutex);
- // first, scan through our list of images to see if the
- // requested image was already loaded
- TImages::iterator iter = sm_TexImages.begin();
- for ( ; iter != sm_TexImages.end(); ++iter) {
- if ((*iter)->GetFileName() == filename) {
- return (*iter);
- }
- }
- //
- // okay, image not found. read from disk.
- //
- CRef<CTexImage> tex_image(new CTexImage(filename));
- sm_TexImages.push_back(tex_image);
- return tex_image;
- }
- //
- // Release()
- // dispose of an image, once done
- //
- void CTexManager::Release(CTexImage *image)
- {
- CFastMutexGuard LOCK(sm_Mutex);
- if (!image) {
- return;
- }
- // scan through the list of loaded images, looking for the
- // image in question
- CRef<CTexImage> handle(image);
- LOG_POST(Info
- << "CTexManager::Release(): releasing texture "
- << image << " (" << image->GetFileName());
- TImages::iterator iter = sm_TexImages.begin();
- while (iter != sm_TexImages.end()) {
- while (iter != sm_TexImages.end() && *iter == image) {
- iter = sm_TexImages.erase(iter);
- }
- ++iter;
- }
- }
- //
- // ReleaseAll()
- // unload all images. This is meant as a final clean-up operation
- //
- void CTexManager::ReleaseAll(void)
- {
- CFastMutexGuard LOCK(sm_Mutex);
- sm_TexImages.clear();
- }
- END_NCBI_SCOPE
- /*
- * ===========================================================================
- * $Log: gltexmanager.cpp,v $
- * Revision 1000.2 2004/06/01 20:51:05 gouriano
- * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.3
- *
- * Revision 1.3 2004/05/21 22:27:45 gorelenk
- * Added PCH ncbi_pch.hpp
- *
- * Revision 1.2 2004/03/24 13:49:04 friedman
- * Added DEFINE_STATIC_FAST_MUTEX to replace 'static CFastMutex' member
- *
- * Revision 1.1 2003/06/03 17:42:06 dicuccio
- * Added texture support. Added classes to handle OpenGL camera setup and
- * viewport specification.
- *
- * ===========================================================================
- */