LowLevelWindow.h

#ifndef LOW_LEVEL_WINDOW_H
#define LOW_LEVEL_WINDOW_H
 
#include <set>
 
class DisplaySpec;
typedef std::set<DisplaySpec> DisplaySpecs;
class VideoModeParams;
class ActualVideoModeParams;
class RenderTarget;
struct RenderTargetParam;
class LowLevelWindow
{
  public:
    static LowLevelWindow* Create();
 
    virtual ~LowLevelWindow() = default;
 
    virtual void* GetProcAddress(const std::string& s) = 0;
 
    // Return "" if mode change was successful, otherwise an error message.
    // bNewDeviceOut is set true if a new device was created and textures
    // need to be reloaded.
    virtual std::string TryVideoMode(const VideoModeParams& p,
                                     bool& bNewDeviceOut) = 0;
    virtual void GetDisplaySpecs(DisplaySpecs& out) const = 0;
 
    virtual void LogDebugInformation() const {}
    virtual bool IsSoftwareRenderer(std::string& /* sError */) { return false; }
 
    virtual void SwapBuffers() = 0;
    virtual void Update() {}
 
    virtual const ActualVideoModeParams* GetActualVideoModeParams() const = 0;
 
    virtual bool SupportsRenderToTexture() const { return false; }
    virtual RenderTarget* CreateRenderTarget() { return nullptr; }
 
    virtual bool SupportsFullscreenBorderlessWindow() const { return false; };
 
    virtual bool SupportsThreadedRendering() { return false; }
    virtual void BeginConcurrentRenderingMainThread() {}
    virtual void EndConcurrentRenderingMainThread() {}
    virtual void BeginConcurrentRendering() {}
    virtual void EndConcurrentRendering() {}
};
 
#endif