laTexture.cpp

/*

Jump'n'Run Engine
http://www.atanaslaskov.com/jnr/

BSD LICENSE
Copyright (c) 2007-2013, Atanas Laskov
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL ATANAS LASKOV BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#include "stdafx.h"
#include "Core.h"

std::map<std::string, laTexture> laTexture::_vLoadedTextures;
M_BOOL laTexture::_bLazyLoad = M_FALSE;

M_TEXTURE laTexture::_id_active = 0;

// Load a texutre
//
void laTexture::load(std::string strFile, laTextureParams params)
{
    //If already existing, simply transfer from the map
    if( _vLoadedTextures[strFile]._id )
    {
        laTexture t = _vLoadedTextures[strFile];
        _id = t._id;
        w = t.w;
        h = t.h;
    }
    else
    {
        //Not loaded but is lazy-loading active?
        if(_bLazyLoad)
        {
            //Yes. Record the filename and postopne loading
            _strFile = strFile;
            _params = params;
            //_nType = nType;
        }
        else
        {
            //No lazy-loading and no pre-existing texutre => load it
            laTexture t = ::laSystemIntegrator::getRenderer()->texLoad(strFile, params);
            _id = t._id;
            w = t.w;
            h = t.h;
        }

        //Update the map
        _vLoadedTextures[strFile] = *this;
    }
}

// Discard texture
//
void laTexture::discard(laTexture *ptex) {
    // TODO: Must check reference counts
}

// Force the loading of a texture
//
void laTexture::loadForce()
{
    if(!_id)
    {
        laTexture t;

        //Check if the map already has a memory-resident copy of the texture
        if( _vLoadedTextures[_strFile]._id )
        {
            t = _vLoadedTextures[_strFile];
        }
        else
        {
            // Nope. Load it and update the map
            t = ::laSystemIntegrator::getRenderer()->texLoad(_strFile, _params);
            _vLoadedTextures[_strFile] = t;
        }

        _id = t._id;
        w = t.w;
        h = t.h;
    }
}

// Force-load all textures present in the map
//
void laTexture::loadForceAll()
{
    std::map<std::string, laTexture>::iterator iter;
    laRenderer* pr = ::laSystemIntegrator::getRenderer();

    for(iter = _vLoadedTextures.begin(); iter != _vLoadedTextures.end(); iter++)
    {
        (*iter).second.loadForce();
    }
}