visualchooser.cpp

最新osg包

/* -*-c++-*- Producer - Copyright (C) 2001-2004  Don Burns
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * OpenSceneGraph Public License for more details.
 */

#include <stdio.h>
#include <iostream>

#include "VisualChooser.h"
#include <osg/Referenced>

using namespace std;
using namespace osgProducer;


VisualChooser::VisualChooser( void )
{
//     _visual_id = 0;
//     _vinfo = 0L;
    _strictAdherence = false;
}

VisualChooser::~VisualChooser(void)
{
   clear();
}

#if 0
void VisualChooser::setVisual( VisualInfo *vinfo )
{
    clear();
    _vinfo = vinfo;
}
#endif
void VisualChooser::resetVisualInfo()
{
#ifdef _WIN32_IMPLEMENTATION
    if (_vinfo != NULL) delete _vinfo;
#endif

#ifdef _OSX_AGL_IMPLEMENTATION
    if(_vinfo != NULL) free(_vinfo);
#endif

    //    _vinfo = 0L;
}

void VisualChooser::addAttribute( AttributeName attribute )
{
    resetVisualInfo();
    _visual_attributes.push_back( VisualAttribute( attribute ) );
}

void VisualChooser::addAttribute( AttributeName attribute, int parameter )
{
    resetVisualInfo();
    _visual_attributes.push_back( VisualAttribute( attribute, parameter ) );
}

void VisualChooser::addExtendedAttribute( unsigned int attribute )
{
    resetVisualInfo();
    _visual_attributes.push_back( VisualAttribute( attribute ) );
}

void VisualChooser::addExtendedAttribute( unsigned int attribute, int parameter )
{
    resetVisualInfo();
    _visual_attributes.push_back( VisualAttribute( attribute, parameter ) );
}

void VisualChooser::setBufferSize( unsigned int size )
{
    addAttribute( BufferSize, size );
}

void VisualChooser::setLevel( int level )
{
    addAttribute( Level, level );

}
void VisualChooser::useRGBA()
{
    addAttribute( RGBA );
}
void VisualChooser::useDoubleBuffer()
{
    addAttribute( DoubleBuffer );
}
void VisualChooser::useStereo()
{
    addAttribute( Stereo );
}

void VisualChooser::setAuxBuffers( unsigned int num )
{
    addAttribute( AuxBuffers, num );
}

void VisualChooser::setRedSize( unsigned int size )
{
    addAttribute( RedSize, size );
}

void VisualChooser::setGreenSize( unsigned int size )
{
    addAttribute( GreenSize, size );
}

void VisualChooser::setBlueSize( unsigned int size )
{
    addAttribute( BlueSize, size );
}

void VisualChooser::setAlphaSize( unsigned int size )
{
    addAttribute( AlphaSize, size );
}

void VisualChooser::setDepthSize( unsigned int size )
{
    addAttribute( DepthSize, size );
}

void VisualChooser::setStencilSize( unsigned int size )
{
    addAttribute( StencilSize, size );
}

void VisualChooser::setAccumRedSize( unsigned int size )
{
    addAttribute( AccumRedSize, size );
}

void VisualChooser::setAccumGreenSize( unsigned int size )
{
    addAttribute( AccumGreenSize, size );
}

void VisualChooser::setAccumBlueSize( unsigned int size )
{
    addAttribute( AccumBlueSize, size );
}

void VisualChooser::setAccumAlphaSize( unsigned int size )
{
    addAttribute( AccumAlphaSize, size );
}

void VisualChooser::setSamples( unsigned int size )
{
    addAttribute( Samples, size );
}

void VisualChooser::setSampleBuffers( unsigned int size )
{
    addAttribute( SampleBuffers, size );
}

void VisualChooser::setVisualID( unsigned int id ) 
{ 
    _visual_id = id; 
}

void VisualChooser::setSimpleConfiguration( bool doublebuffer )
{
    clear();
    addAttribute( RGBA );
    addAttribute( DepthSize, 16 );
    if (doublebuffer)
        addAttribute( DoubleBuffer );
}

void VisualChooser::clear() 
{
    _visual_attributes.clear();
    resetVisualInfo();

    // Always use UseGL
    addAttribute( UseGL );
}


#ifdef _OSX_AGL_IMPLEMENTATION
#include <AGL/agl.h>

void VisualChooser::applyAttribute(const VisualAttribute &va, std::vector<int> &attribs)
{
    if(va.isExtension())
    {
      attribs.push_back(static_cast<int>(va.attribute()));
    }
    else
    {
      switch(va.attribute())
      {
        case UseGL:          attribs.push_back(AGL_COMPLIANT); break;
        case BufferSize:     attribs.push_back(AGL_BUFFER_SIZE); break;
        case Level:          attribs.push_back(AGL_LEVEL); break;
        case RGBA:           attribs.push_back(AGL_RGBA); break;
        case DoubleBuffer:   attribs.push_back(AGL_DOUBLEBUFFER); break;
        case Stereo:         attribs.push_back(AGL_STEREO); break;
        case AuxBuffers:     attribs.push_back(AGL_AUX_BUFFERS); break;
        case RedSize:        attribs.push_back(AGL_RED_SIZE); break;
        case GreenSize:      attribs.push_back(AGL_GREEN_SIZE); break;
        case BlueSize:       attribs.push_back(AGL_BLUE_SIZE); break;
        case AlphaSize:      attribs.push_back(AGL_ALPHA_SIZE); break;
        case DepthSize:      attribs.push_back(AGL_DEPTH_SIZE); break;
        case StencilSize:    attribs.push_back(AGL_STENCIL_SIZE); break;
        case AccumRedSize:   attribs.push_back(AGL_ACCUM_RED_SIZE); break;
        case AccumGreenSize: attribs.push_back(AGL_ACCUM_GREEN_SIZE); break;
        case AccumBlueSize:  attribs.push_back(AGL_ACCUM_BLUE_SIZE); break;
        case AccumAlphaSize: attribs.push_back(AGL_ACCUM_ALPHA_SIZE); break;
#if defined (AGL_SAMPLE_BUFFERS_ARB) && defined (AGL_SAMPLES_ARB)
        case SampleBuffers:  attribs.push_back(AGL_SAMPLE_BUFFERS_ARB); break;
        case Samples:        attribs.push_back(AGL_SAMPLES_ARB); break;
#endif
        default: attribs.push_back((int)va.attribute()); break;
      }
    }

    if (va.hasParameter())
    {
      attribs.push_back(va.parameter());
    }
}

VisualInfo *VisualChooser::choose( Display *dpy, int screen, bool strict_adherence)
{
    if(_vinfo != NULL)
    {
      // If VisualInfo exists, then we may be able to reuse it
      GLint val;
      if((*_vinfo) && (aglDescribePixelFormat(*_vinfo, AGL_NO_RECOVERY, &val))) return _vinfo;
    }
    else 
    {
      // Use malloc() since new() causes a bus error
      _vinfo = (VisualInfo*)malloc(sizeof(VisualInfo*));
    }
    // Set up basic attributes if needed
    if( _visual_attributes.size() == 0 ) setSimpleConfiguration();

    bool fullscreen = (screen == 1); // Whether to fullscreen or not
    std::vector<int> va; // Visual attributes

    va.push_back(AGL_NO_RECOVERY);
    if(fullscreen) va.push_back(AGL_FULLSCREEN);

    vector<VisualAttribute>::const_iterator p;
    for( p = _visual_attributes.begin(); p != _visual_attributes.end(); p++ )
    {
      applyAttribute(*p, va);
    }
    va.push_back(AGL_NONE); // Must be last element

    // Copy to GLint vector, since this is what the agl functions require
    std::vector<GLint> glva;
    std::vector<int>::iterator i;
    for(i = va.begin(); i != va.end(); i++)
    {
      glva.push_back(*i);
    }

    if(fullscreen)
    {
      GDHandle gdhDisplay;
      DMGetGDeviceByDisplayID((DisplayIDType)*dpy, &gdhDisplay, false);
      *_vinfo = aglChoosePixelFormat(&gdhDisplay, 1, &(glva.front()));
    }
    else
    {
      *_vinfo = aglChoosePixelFormat(NULL, 0, &(glva.front()));
    }

    if(*_vinfo == NULL)
    {
      std::cerr<< "aglChoosePixelFormat failed: " << aglGetError() << std::endl;
      for(i=va.begin(); i!=va.end(); ++i) 
      {
        std::cerr << (*i) << ", ";
      }
      std::cerr << std::endl;
    }
    return _vinfo;
}

#endif

#ifdef _OSX_CGL_IMPLEMENTATION
void VisualChooser::applyAttribute(const VisualAttribute &va, std::vector<int> &attribs)
{
    if(va.isExtension())
    {
      attribs.push_back(static_cast<int>(va.attribute()));
    }
    else
    {
      switch(va.attribute())
      {
        case UseGL:          attribs.push_back(kCGLPFACompliant); break;
        case BufferSize:     attribs.push_back(kCGLPFAColorSize); break;
        //case Level:          attribs.push_back(GLX_LEVEL); break;
        //case RGBA:           attribs.push_back(GLX_RGBA); break;
        case DoubleBuffer:   attribs.push_back(kCGLPFADoubleBuffer); break;
        case Stereo:         attribs.push_back(kCGLPFAStereo); break;
        case AuxBuffers:     attribs.push_back(kCGLPFAAuxBuffers); break;
        case RedSize:        attribs.push_back(kCGLPFAColorSize); break;
        case GreenSize:      attribs.push_back(kCGLPFAColorSize); break;
        case BlueSize:       attribs.push_back(kCGLPFAColorSize); break;
        case AlphaSize:      attribs.push_back(kCGLPFAAlphaSize); break;
        case DepthSize:      attribs.push_back(kCGLPFADepthSize); break;
        case StencilSize:    attribs.push_back(kCGLPFAStencilSize); break;
        case AccumRedSize:   attribs.push_back(kCGLPFAAccumSize); break;
        case AccumGreenSize: attribs.push_back(kCGLPFAAccumSize); break;
        case AccumBlueSize:  attribs.push_back(kCGLPFAAccumSize); break;
        case AccumAlphaSize: attribs.push_back(kCGLPFAAccumSize); break;
        case SampleBuffers:  attribs.push_back(kCGLPFASampleBuffers); break;
        case Samples:        attribs.push_back(kCGLPFASamples); break;
        default: attribs.push_back(va.attribute()); break;
      }
    }

    if (va.hasParameter())
    {
      attribs.push_back(va.parameter());
    }
}

VisualInfo *VisualChooser::choose( Display *dpy, int screen, bool strict_adherence)
{
    if(_vinfo != NULL)
    {
      // If VisualInfo exists, then we may be able to reuse it
      GLint val;
      if(!CGLDescribePixelFormat(*_vinfo, 0L, kCGLPFANoRecovery, &val)) 
        return _vinfo;
    }

    // Set up basic attributes if needed
    if( _visual_attributes.size() == 0 ) setSimpleConfiguration();

    u_int32_t display_id = CGDisplayIDToOpenGLDisplayMask(*dpy);
    std::vector<int> va; // Visual attributes

    va.push_back(kCGLPFADisplayMask);
    va.push_back((CGLPixelFormatAttribute)display_id);
    va.push_back(kCGLPFANoRecovery);
    va.push_back( kCGLPFAAccelerated );
    va.push_back( kCGLPFAFullScreen );

    vector<VisualAttribute>::const_iterator p;
    for( p = _visual_attributes.begin(); p != _visual_attributes.end(); p++ )
    {
      applyAttribute(*p, va);
    }
    va.push_back(CGLPixelFormatAttribute(0)); // Must be last element

    long nvirt;
    CGLPixelFormatAttribute *array = new CGLPixelFormatAttribute[va.size()];
    memcpy(array, &(va.front()), va.size()*sizeof(CGLPixelFormatAttribute));
    CGLError err = CGLChoosePixelFormat(array, _vinfo, &nvirt);
    if(err)
    {
      std::cerr<< "CGLChoosePixelFormat failed: " << CGLErrorString(err) << std::endl;