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glt/info.cpp

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#include "info.h"

#include <glt/gl.h>
#include <glt/error.h>
#include <misc/config.h>

#include <iostream>
#include <cstdio>
#include <ctime>
#include <cstring>
using namespace std;

#ifdef GLT_ZLIB
#include <zlib.h>
#endif

#ifdef GLT_PNG
#include <png.h>
#endif

static string i2string(const int i)
{
    char buffer[100];
    sprintf(buffer,"%d",i);
    return buffer;
}

string GltInfo()
{
    string str;

    GLERROR;

    str += "          Vendor : ";
    str += (char *) glGetString(GL_VENDOR);
    str += '\n';
    
    str += "        Renderer : ";
    str += (char *) glGetString(GL_RENDERER);
    str += '\n';

    str += "         Version : ";
    str += (char *) glGetString(GL_VERSION);
    str += '\n';

    GLint doubleBuffering;
    GLint rgbaMode;
    GLint zDepth;
    GLint stencilDepth;

    glGetIntegerv(GL_DOUBLEBUFFER,&doubleBuffering);
    glGetIntegerv(GL_RGBA_MODE,&rgbaMode);
    glGetIntegerv(GL_DEPTH_BITS,&zDepth);
    glGetIntegerv(GL_STENCIL_BITS,&stencilDepth);

    GLERROR

    str += "Double-buffering : ";
    str += (doubleBuffering ? "" : "not " );
    str += "supported.\n";

    str += "       RGBA mode : ";
    str += (rgbaMode ? "" : "not " );
    str += "enabled.\n";
    
    str += "    Depth buffer : ";
    str += i2string(zDepth);
    str += " bit-planes.\n";

    str += "  Stencil buffer : ";
    str += i2string(stencilDepth);
    str += " bit-planes.";

    return str;
}

string GltDate()
{
    time_t clock;
    time(&clock);
    return asctime(localtime(&clock));
}

string GltVersion()
{
    return GLT_VERSION_STRING;
}

string GltVersionInformation()
{
    string str;

    str += "GLT    " + GltVersion() + "\n";

    #ifdef GLT_ZLIB
    str += "zLib   " + string(ZLIB_VERSION) + "\n";
    #endif

    #ifdef GLT_PNG
    str += "libPNG " + string(PNG_LIBPNG_VER_STRING) + "\n";
    #endif

    return str;
}

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