osmesacontext.cpp

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/*
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 *  Copyright (c) 2012, PAL Robotics, S.L.
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 *
 * @file osmesacontext.cpp
 * @author Bence Magyar
 * @date June 2012
 * @version 0.1
 * @brief Class to wrap OSMesaContext.
 */

#include "osmesacontext.h"
#include <string>
#include <cstdlib>

OsMesaContext::OsMesaContext(int width, int height)
{
    context = OSMesaCreateContext(OSMESA_RGBA, 0);
    if(!context)
        throw "OSMesaCreateContext failed!";
    buffer = malloc(width*height*sizeof(GLubyte));
    if(!buffer)
        throw "OsMesaContext Buffer allocation failed!";
    if(!OSMesaMakeCurrent(context, buffer, GL_UNSIGNED_BYTE, width, height))
    {
        free(buffer);
        throw "OSMesaMakeCurrent failed!";
    }

}

OsMesaContext::~OsMesaContext()
{
    free(buffer);
    OSMesaDestroyContext(context);
}