EGLHelper.h

/*
* Copyright (C) TES Electronic Solutions GmbH,
* All Rights Reserved.
* Contact: info@guiliani.de
*
* This file is part of the Guiliani HMI framework
* for the development of graphical user interfaces on embedded systems.
*/
 
#ifndef __EGL_HELPER_H__
#define __EGL_HELPER_H__
 
#include <EGL/egl.h>
#include <EGL/eglext.h>
 
#include "GUITrace.h"
 
#ifdef GUILIANI_EGL13_COMPATIBILITY_WORKAROUND
#undef EGL_DEFAULT_DISPLAY
#define EGL_DEFAULT_DISPLAY     ((EGLNativeDisplayType)0)
typedef EGLNativeWindowType     NativeWindowType;
typedef EGLNativeDisplayType    NativeDisplayType;
#endif
 
#define GETEGLHELPER EGLHelper::GetInstance()
 
class EGLHelper
{
public:
    static eC_Bool CreateInstance(
        const eC_UInt& uiVersion,
        const eC_Int& iID = -1,
        const eC_Int& iBufferSize = 16,
        const eC_Int& iRedSize = 1,
        const eC_Int& iGreenSize = 1,
        const eC_Int& iBlueSize = 1,
        const eC_Int& iAlphaSize = 0,
        const eC_Int& iDepthSize = 16);
 
    EGLHelper(
        const eC_UInt& uiVersion,
        const eC_Int& iID,
        const eC_Int& iBufferSize,
        const eC_Int& iRedSize,
        const eC_Int& iGreenSize,
        const eC_Int& iBlueSize,
        const eC_Int& iAlphaSize,
        const eC_Int& iDepthSize);
 
    virtual ~EGLHelper();
 
    static EGLHelper& GetInstance();
 
    static eC_Bool CheckEGLError(const eC_String &kCallingMethod);
 
    virtual eC_Bool SwapBuffers();
 
    inline const EGLContext GetScreenContext() const
    {
        return m_pkEGLScreenContext;
    }
 
    inline const EGLContext GetOffScreenContext() const
    {
        return m_pkEGLOffScreenContext;
    }
 
    inline const EGLDisplay GetDisplay() const
    {
        return m_pkEGLDisplay;
    }
 
    inline const EGLConfig GetScreenConfig() const
    {
        return m_pkScreenConfig;
    }
 
    inline const EGLConfig GetOffScreenConfig() const
    {
        return m_pkOffScreenConfig;
    }
 
    inline const EGLSurface GetWindowSurface() const
    {
        return m_pkEGLWindowSurface;
    }
 
    eC_Bool IsInited() const
    {
        return m_bInited;
    }
 
    eC_UInt GetWidth() const;
 
    eC_UInt GetHeight() const;
 
private:
    EGLHelper();
 
    eC_Bool Init();
 
    EGLBoolean CreateEGLContext();
 
    eC_Bool DeInit();
 
    eC_Bool FindScreenConfig();
 
    eC_Bool FindOffScreenConfig();
 
    void PrintConfig(EGLDisplay pkDisplay, EGLConfig config);
 
private:
    static EGLint ms_uiEGLScreenBufferSize;
 
    static EGLint ms_uiEGLOffScreenBufferSize;
 
    static EGLint* m_aiScreenConfig;
 
    static EGLint* m_aiOffScreenConfig;
 
    EGLDisplay m_pkEGLDisplay;
 
    EGLSurface m_pkEGLWindowSurface;
 
    EGLContext m_pkEGLScreenContext;
 
    EGLContext m_pkEGLOffScreenContext;
 
    EGLConfig m_pkScreenConfig;
 
    EGLConfig m_pkOffScreenConfig;
 
    EGLint m_iEGLMajorVersion;
 
    EGLint m_iEGLMinorVersion;
 
    eC_UInt m_uiVersion;
 
    EGLint m_iRenderableType;
 
    NativeDisplayType m_hDisplayType;
 
    NativeWindowType m_hWindowType;
 
    eC_Bool m_bUsePlatformDisplay;
 
    static EGLHelper* ms_pkInstance;
 
    EGLint m_iID;
    EGLint m_iBufferSize;
    EGLint m_iRedSize;
    EGLint m_iGreenSize;
    EGLint m_iBlueSize;
    EGLint m_iAlphaSize;
    EGLint m_iDepthSize;
 
    eC_Bool m_bInited;
};
 
#endif