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#ifndef PBUFFERS_H
#define PBUFFERS_H
# ifdef __MACH__
# include <OpenGL/gl.h>
# else
# include <GL/gl.h>
# include <GL/glx.h>
# endif
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Interface of PBuffer
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
class PBuffer
{
public:
enum FormatOption
{
DoubleBuffer = 0x0001,
DepthBuffer = 0x0002,
Rgba = 0x0004,
StencilBuffer = 0x0020,
SingleBuffer = DoubleBuffer << 16,
NoDepthBuffer = DepthBuffer << 16,
ColorIndex = Rgba << 16,
NoStencilBuffer = StencilBuffer << 16,
};
PBuffer(const unsigned int width,
const unsigned int height,
int format);
bool create(const bool shareContext = false,
const bool shareLists = false);
virtual ~PBuffer();
virtual bool makeCurrent();
unsigned int width() const;
unsigned int height() const;
protected:
///! Flags indicating the type of pbuffer.
int format_;
///! Flag indicating if the rendering context is shared with another context.
bool sharedContext_;
//! Flag indicating if display lists should be shared between rendering
// contexts.(If the rendering context is shared (default), then display
// lists are automatically shared).
bool sharedLists_;
Display* display_;
GLXPbuffer glxPbuffer_;
GLXContext glxContext_;
unsigned int width_;
unsigned int height_;
};
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Interface of PBufferEx
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/*!
* pbuffer layer to keep previous pbuffer states.
*/
class PBufferEx : public PBuffer
{
public:
PBufferEx(const unsigned int width,
const unsigned int height,
const int mode );
virtual bool makeCurrent();
bool endCurrent();
private:
Display* oldDisplay_;
GLXDrawable glxOldDrawable_;
GLXContext glxOldContext_;
int vp[4];
};
#endif //PBUFFERS_H
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