GLContext.h

Go to the documentation of this file.

//
// Copyright Contributors to the MaterialX Project
// SPDX-License-Identifier: Apache-2.0
//
 
#ifndef MATERIALX_GLCONTEXT_H
#define MATERIALX_GLCONTEXT_H
 
 
#include <MaterialXRenderGlsl/Export.h>
 
#include <MaterialXRenderHw/SimpleWindow.h>
 
#if defined(__APPLE__)
#include <OpenGL/gl.h>
#elif defined(__linux__) || defined(__FreeBSD__)
#include <GL/glx.h>
#endif
 
MATERIALX_NAMESPACE_BEGIN
 
#if defined(_WIN32)
using HardwareContextHandle = HGLRC;
#elif defined(__linux__) || defined(__FreeBSD__)
using HardwareContextHandle = GLXContext;
#else
using HardwareContextHandle = void*;
#endif
 
using SimpleWindowPtr = std::shared_ptr<class SimpleWindow>;
 
using GLContextPtr = std::shared_ptr<class GLContext>;
 
class MX_RENDERGLSL_API GLContext
{
  public:
    static GLContextPtr create(SimpleWindowPtr window, HardwareContextHandle context = {})
    {
        return GLContextPtr(new GLContext(window, context));
    }
 
    virtual ~GLContext();
 
    HardwareContextHandle contextHandle() const
    {
        return _contextHandle;
    }
 
    bool isValid() const
    {
        return _isValid;
    }
 
    int makeCurrent();
 
  protected:
    // Create the base context. A OpenGL context to share with can be passed in.
    GLContext(SimpleWindowPtr window, HardwareContextHandle context = 0);
 
    // Simple window
    SimpleWindowPtr _window;
 
    // Context handle
    HardwareContextHandle _contextHandle;
 
    // Flag to indicate validity
    bool _isValid;
 
#if defined(__linux__) || defined(__FreeBSD__)
    // An X window used by context operations
    Window _xWindow;
 
    // An X display used by context operations
    Display* _xDisplay;
#endif
};
 
MATERIALX_NAMESPACE_END
 
#endif