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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
*
* This application is open source and may be redistributed and/or modified
* freely and without restriction, both in commericial and non commericial applications,
* as long as this copyright notice is maintained.
*
* This application 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.
*/
#ifndef PBUFFER_TEXTURE_2D_DEF
#define PBUFFER_TEXTURE_2D_DEF
#include <Producer/RenderSurface>
#include <osg/Texture2D>
class PBufferTexture2D : public osg::Texture2D
{
public:
PBufferTexture2D( Producer::RenderSurface *pbuffer ):
_pbuffer(pbuffer) {}
virtual void apply(osg::State& state) const
{
const unsigned int contextID = state.getContextID();
TextureObject* textureObject = getTextureObject(contextID);
if( textureObject == 0 )
{
GLuint format =
_pbuffer->getRenderToTextureMode() == Producer::RenderSurface::RenderToRGBTexture ? GL_RGB:
_pbuffer->getRenderToTextureMode() == Producer::RenderSurface::RenderToRGBATexture ? GL_RGBA : 0 ;
unsigned int width = _pbuffer->getWindowWidth();
unsigned int height = _pbuffer->getWindowHeight();
_textureObjectBuffer[contextID] = textureObject =
generateTextureObject( contextID, GL_TEXTURE_2D, 1, format, width, height, 1, 0 );
textureObject->bind();
applyTexParameters( GL_TEXTURE_2D, state);
glTexImage2D( GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, 0 );
textureObject->setAllocated(true);
}
else
{
textureObject->bind();
_pbuffer->bindPBufferToTexture( Producer::RenderSurface::FrontBuffer );
}
}
private:
Producer::ref_ptr<Producer::RenderSurface> _pbuffer;
};
#endif
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