bakercp/ofAppEGLWindow.cpp

## ofAppEGLWindow.cpp
/*==============================================================================

 Copyright (c) 2011, 2012 Christopher Baker <http://christopherbaker.net>

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.

    Modified by Philip Whitfield (undef.ch)

 ==============================================================================*/
#include "ofAppEGLWindow.h"

#include "ofGraphics.h" // used in runAppViaInfiniteLoop()
#include "ofAppRunner.h"
#include "ofUtils.h"
#include "ofFileUtils.h"
#include <assert.h>

// TODO. we may not need these to be static, but we will
// leave it this way for now in case future EGL windows
// use static callbacks (like glut)

//------------------------------------------------------------
ofAppEGLWindow::ofAppEGLWindow() {
    terminate      = false;

    timeNow         = 0;
    timeThen        = 0;
    fps             = 60.0; //give a realistic starting value - win32 issues
    frameRate       = 60.0;
    windowMode      = OF_WINDOW;
    bNewScreenMode  = true;
    nFramesForFPS   = 0;
    nFramesSinceWindowResized = 0;
    nFrameCount     = 0;
    buttonInUse     = 0;
    bEnableSetupScreen  = true;
    bFrameRateSet   = false;
    millisForFrame    = 0;
    prevMillis      = 0;
    diffMillis      = 0;
    // requestedWidth    = 0;
    // requestedHeight   = 0;
    // nonFullScreenX    = -1;
    // nonFullScreenY    = -1;
    lastFrameTime   = 0.0;
    eglDisplayString   = "";
    orientation     = OF_ORIENTATION_DEFAULT;

cout << "ofAppEGLWindow constructor " << endl;
}

//------------------------------------------------------------
ofAppEGLWindow::~ofAppEGLWindow() {

}

//------------------------------------------------------------
bool ofAppEGLWindow::setupRPiNativeWindow(int w, int h, int screenMode){

#ifdef TARGET_RASPBERRY_PI
  bcm_host_init();

  //boolean force HDMI vs. composite

  int32_t success = 0;

  uint32_t sw;
  uint32_t sh;

  // create an EGL window surface
  // IF SCREENMODE==FULLSCREEN
  success = graphics_get_display_size(0 /* LCD */, &sw, &sh);

    cout << "succes=" << success << endl;

  if(success < 0) {
    cout << "tried to get display, but failed." << endl;
    return false;
  }

  cout << "   REQUESTED SCREEN SIZE w=" << w << " and  h=" << h << endl;
  cout << "HARDWARE SCREEN SIZE IS sw=" << sw << " and sh=" << sh << endl;

  if(screenMode == OF_WINDOW) {
    sw = MIN(sw,w);
    sh = MIN(sh,h);
  } else {
    // OF_FULLSCREEN and GAME take the screen size
  }

    cout << "CREATING A SCREEN THAT IS w=" << sw << " and h=" << sh << endl;


//////////////////////////
  VC_RECT_T dst_rect;
  VC_RECT_T src_rect;

  dst_rect.x = 0;
  dst_rect.y = 0;
  dst_rect.width = sw;
  dst_rect.height = sh;

  src_rect.x = 0;
  src_rect.y = 0;
  src_rect.width = sw << 16;
  src_rect.height = sh << 16;

  DISPMANX_ELEMENT_HANDLE_T dispman_element;
  DISPMANX_DISPLAY_HANDLE_T dispman_display;
  DISPMANX_UPDATE_HANDLE_T dispman_update;


  dispman_display = vc_dispmanx_display_open( 0 /* LCD */);
  dispman_update = vc_dispmanx_update_start( 0 );

  dispman_element = vc_dispmanx_element_add ( dispman_update,
                                              dispman_display,
                                              0/*layer*/,
                                              &dst_rect,
                                              0/*src*/,
                                              &src_rect,
                                              DISPMANX_PROTECTION_NONE,
                                              0 /*alpha*/,
                                              0/*clamp*/,
                                              (DISPMANX_TRANSFORM_T)0/*transform*/
                                              );

  nativeWindow.element = dispman_element;
  nativeWindow.width = sw;
  nativeWindow.height = sh;

  vc_dispmanx_update_submit_sync( dispman_update );

  return setupEGL(&nativeWindow,NULL);

#else
  return false;
#endif

}

//------------------------------------------------------------
bool ofAppEGLWindow::setupX11NativeWindow(int w, int h, int screenMode){
#ifndef TARGET_RASPBERRY_PI

	// X11 variables
	Window				x11Window	= 0;
	Display*			x11Display	= 0;
	long				x11Screen	= 0;
	XVisualInfo*		x11Visual	= 0;
	Colormap			x11Colormap	= 0;
	/*
		Step 0 - Create a NativeWindowType that we can use it for OpenGL ES output
	*/
	Window					sRootWindow;
    XSetWindowAttributes	sWA;
	unsigned int			ui32Mask;
	int						i32Depth;

	// Initializes the display and screen
	x11Display = XOpenDisplay( 0 );
	if (!x11Display)
	{
		ofLogError()<< "Error: Unable to open X display";
		return false;
	}
	x11Screen = XDefaultScreen( x11Display );

	// Gets the window parameters
	sRootWindow = RootWindow(x11Display, x11Screen);
	i32Depth = DefaultDepth(x11Display, x11Screen);
	x11Visual = new XVisualInfo;
	XMatchVisualInfo( x11Display, x11Screen, i32Depth, TrueColor, x11Visual);
	if (!x11Visual)
	{
		ofLogError()<< "Error: Unable to acquire visual";
		return false;
	}
    x11Colormap = XCreateColormap( x11Display, sRootWindow, x11Visual->visual, AllocNone );
    sWA.colormap = x11Colormap;

    // Add to these for handling other events
    sWA.event_mask = StructureNotifyMask | ExposureMask | ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask;
    ui32Mask = CWBackPixel | CWBorderPixel | CWEventMask | CWColormap;

	// Creates the X11 window
    x11Window = XCreateWindow( x11Display, RootWindow(x11Display, x11Screen), 0, 0, w, h,
								 0, CopyFromParent, InputOutput, CopyFromParent, ui32Mask, &sWA);
	XMapWindow(x11Display, x11Window);
	XFlush(x11Display);

  return setupEGL(&x11Window,x11Display);

#else
  return false;
#endif

}


//------------------------------------------------------------
void ofAppEGLWindow::setupOpenGL(int w, int h, int screenMode) {

	 cout << "in ofAppEGLWINDOW: setupOpenGL" << endl;

     windowMode = screenMode;
     bNewScreenMode = true;

     if(windowMode == OF_GAME_MODE) {
         ofLogWarning("ofAppEGLWindow") << "OF_GAME_MODE not supported.";
     }

     //windowW = requestedWidth  = getWindowWidth();
     //windowH = requestedHeight = getWindowHeight();


	#ifdef TARGET_RASPBERRY_PI
		bool success = setupRPiNativeWindow(w,h,screenMode);
	#else
		bool success = setupX11NativeWindow(w,h,screenMode);
	#endif

    if(!success) {
      cout << "CREATED screen failed " << w << " x " << h << endl;
    } else {
      cout << "CREATED SCREEN WITH SIZE " << w << " x " << h << endl;
    }


    // TEMPORARY -- screenRect info must be set in setups

    screenRect.x = 0;
    screenRect.y = 0;
    screenRect.width = nativeWindow.width;
    screenRect.height = nativeWindow.height;

    nonFullscreenWindowRect = screenRect;
    currentWindowRect = screenRect;

}

//------------------------------------------------------------
bool ofAppEGLWindow::setupEGL(NativeWindowType nativeWindow, NativeDisplayType * display)
{

    EGLBoolean result;
    EGLint num_config;
    EGLConfig config;

	ofLogNotice("ofAppEGLWindow::setupEGL") << "setting EGL Display";
    // get an EGL eglDisplay connection

    if(display==NULL){
    	ofLogNotice("ofAppEGLWindow::setupEGL") << "setting default Display";
    	eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    }else{
		  ofLogNotice("ofAppEGLWindow::setupEGL") << "setting argument Display";
    	eglDisplay = eglGetDisplay(display);
    }

    if(eglDisplay == EGL_NO_DISPLAY) {
		  ofLogError("ofAppEGLWindow::setupEGL") << "eglGetDisplay returned: " << eglDisplay;
		  return false;
    }else{
    	ofLogNotice("ofAppEGLWindow::setupEGL") << "EGL Display correctly set";
    }

    EGLint eglVersionMajor = 0;
    EGLint eglVersionMinor = 0;

    // initialize the EGL eglDisplay connection
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglInitialize";
    result = eglInitialize(eglDisplay, &eglVersionMajor, &eglVersionMinor);

    if(result == EGL_BAD_DISPLAY) {
//  eglDisplay is not an EGL connection
      ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_BAD_DISPLAY";
      return false;
    } else if(result == EGL_NOT_INITIALIZED) {
      // eglDisplay cannot be intitialized
      ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_NOT_INITIALIZED";
      return false;
    } else if(result == EGL_FALSE) {
      // eglinitialize was not initialiezd
      ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_FALSE";
      return false;
    } else {
      // result == EGL_TRUE
      // success!
    }

    // TODO -- give the ability to send in this list when setting up.
    static const EGLint attribute_list[] =
    {
        EGL_RED_SIZE,   8, // 8 bits for red
        EGL_GREEN_SIZE, 8, // 8 bits for green
        EGL_BLUE_SIZE,  8, // 8 bits for blue
        EGL_ALPHA_SIZE, 8, // 8 bits for alpha
        EGL_SURFACE_TYPE, EGL_WINDOW_BIT, // default eglSurface type
        EGL_NONE // attribute list is termintated with EGL_NONE
    };

    // get an appropriate EGL frame buffer configuration
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglChooseConfig";
    result = eglChooseConfig(eglDisplay,
                             attribute_list,
                             &config,
                             1,
                             &num_config);

    assert(EGL_FALSE != result);

	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglCreateWindowSurface";
    eglSurface = eglCreateWindowSurface( eglDisplay, config, nativeWindow, NULL );
    assert(eglSurface != EGL_NO_SURFACE);

    // create an EGL rendering eglContext
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglCreateContext";
    eglContext = eglCreateContext(eglDisplay, config, EGL_NO_CONTEXT, NULL);
    assert(eglContext != EGL_NO_CONTEXT);


    // connect the eglContext to the eglSurface
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglMakeCurrent";
    result = eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext);
    assert(EGL_FALSE != result);

    // Set background color and clear buffers
    glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
    glClear( GL_COLOR_BUFFER_BIT );
    glClear( GL_DEPTH_BUFFER_BIT );

    //ofSetCurrentRenderer(ofPtr<ofBaseRenderer>(new ofGLRenderer));

    return true;
}

//------------------------------------------------------------
void ofAppEGLWindow::destroyEGL() {
    eglMakeCurrent( eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT );
    eglDestroySurface( eglDisplay, eglSurface );
    eglDestroyContext( eglDisplay, eglContext );
    eglTerminate( eglDisplay );
}

//------------------------------------------------------------
void ofAppEGLWindow::initializeWindow()
{
    nFramesSinceWindowResized = 0;
}

//------------------------------------------------------------
void ofAppEGLWindow::runAppViaInfiniteLoop(ofBaseApp *appPtr) {
    ofAppPtr = appPtr; // make a local copy

    ofNotifySetup();
    ofNotifyUpdate();

    // loop it!
    infiniteLoop();

    // we got a terminate ... so clean up.
    destroyEGL();
}

//------------------------------------------------------------
void ofAppEGLWindow::infiniteLoop() {
    while (!terminate) {
      idle();
      display();
    }
}

//------------------------------------------------------------
void ofAppEGLWindow::hideCursor(){
    ofLogNotice("ofAppEGLWindow") << "hideCursor() not implemented.";
}

//------------------------------------------------------------
void ofAppEGLWindow::showCursor(){
    ofLogNotice("ofAppEGLWindow") << "showCursor() not implemented.";
}

//------------------------------------------------------------
void ofAppEGLWindow::setFrameRate(float targetRate){
  // given this FPS, what is the amount of millis per frame
  // that should elapse?

  // --- > f / s

  if (targetRate == 0){
    bFrameRateSet = false;
    return;
  }

  bFrameRateSet       = true;
  float durationOfFrame   = 1.0f / (float)targetRate;
  millisForFrame      = (int)(1000.0f * durationOfFrame);

  frameRate       = targetRate;

}

//------------------------------------------------------------
void ofAppEGLWindow::setWindowTitle(string title) {
    ofLogNotice("ofAppEGLWindow") << "setWindowTitle() not implemented.";
}

//------------------------------------------------------------
ofPoint ofAppEGLWindow::getWindowSize(){
  return ofPoint(currentWindowRect.width, currentWindowRect.height,0);
}

//------------------------------------------------------------
ofPoint ofAppEGLWindow::getWindowPosition(){
  return currentWindowRect.getPosition();
}

//------------------------------------------------------------
ofPoint ofAppEGLWindow::getScreenSize(){
  return ofPoint(screenRect.width, screenRect.height,0);
}

//------------------------------------------------------------
int ofAppEGLWindow::getWidth(){
  if( orientation == OF_ORIENTATION_DEFAULT || orientation == OF_ORIENTATION_180 ){
    return currentWindowRect.width;
  }
  return currentWindowRect.height;
}

//------------------------------------------------------------
int ofAppEGLWindow::getHeight(){
  if( orientation == OF_ORIENTATION_DEFAULT || orientation == OF_ORIENTATION_180 ){
    return currentWindowRect.height;
  }
  return currentWindowRect.width;
}

//------------------------------------------------------------
void ofAppEGLWindow::setOrientation(ofOrientation orientationIn){
  orientation = orientationIn;
}

//------------------------------------------------------------
ofOrientation ofAppEGLWindow::getOrientation(){
  return orientation;
}

//------------------------------------------------------------
bool ofAppEGLWindow::doesHWOrientation() {
    return false;
}

//------------------------------------------------------------
void ofAppEGLWindow::setWindowPosition(int x, int y){
// todo -- set window rect, etc, but if we are in fullscreen mode,
    // we won't change it.
  setWindowRect(ofRectangle(x,y,currentWindowRect.width,currentWindowRect.height));
}

//------------------------------------------------------------
void ofAppEGLWindow::setWindowShape(int w, int h){
  // todo -- set window rect, etc, but if we are in fullscreen mode,
 // we won't change it.
  setWindowRect(ofRectangle(currentWindowRect.x,currentWindowRect.y,w,h));
}


//------------------------------------------------------------
int ofAppEGLWindow::getWindowMode(){
  return windowMode;
}

//------------------------------------------------------------
void ofAppEGLWindow::toggleFullscreen(){
  if( windowMode == OF_GAME_MODE)return;

  if( windowMode == OF_WINDOW ){
    setFullscreen(true);
  }else{
    setFullscreen(false);
  }

}

//------------------------------------------------------------
void ofAppEGLWindow::setFullscreen(bool fullscreen){
    if( windowMode == OF_GAME_MODE)return;

    if(fullscreen && windowMode != OF_FULLSCREEN){
        bNewScreenMode  = true;
        windowMode      = OF_FULLSCREEN;
    }else if(!fullscreen && windowMode != OF_WINDOW) {
        bNewScreenMode  = true;
        windowMode      = OF_WINDOW;
    }
}

//------------------------------------------------------------
void ofAppEGLWindow::enableSetupScreen(){
  bEnableSetupScreen = true;
}

//------------------------------------------------------------
void ofAppEGLWindow::disableSetupScreen(){
  bEnableSetupScreen = false;
}

//------------------------------------------------------------
void ofAppEGLWindow::idle() {
  //  thanks to jorge for the fix:
  //  http://www.openframeworks.cc/forum/viewtopic.php?t=515&highlight=frame+rate

  if (nFrameCount != 0 && bFrameRateSet == true){
    diffMillis = ofGetElapsedTimeMillis() - prevMillis;
    if (diffMillis > millisForFrame){
      ; // we do nothing, we are already slower than target frame
    } else {
      int waitMillis = millisForFrame - diffMillis;
      usleep(waitMillis * 1000);   //mac sleep in microseconds - cooler :)
    }
  }
  prevMillis = ofGetElapsedTimeMillis(); // you have to measure here

  timeNow = ofGetElapsedTimef();
  double diff = timeNow-timeThen;
  if( diff  > 0.00001 ){
    fps     = 1.0 / diff;
    frameRate *= 0.9f;
    frameRate += 0.1f*fps;
   }
   lastFrameTime  = diff;
   timeThen   = timeNow;
    // --------------

  ofNotifyUpdate();

  postIdle();
}

//------------------------------------------------------------
void ofAppEGLWindow::display() {

  // take care of any requests for a new screen mode
  if (windowMode != OF_GAME_MODE){
    if ( bNewScreenMode ){
      if( windowMode == OF_FULLSCREEN){
        setWindowRect(getScreenRect());
      } else if( windowMode == OF_WINDOW ){
        setWindowRect(nonFullscreenWindowRect);
      }
      bNewScreenMode = false;
    }
  }

  ///////////////////////////////////////////////////////////////////////////////////////
  // set viewport, clear the screen


  ofViewport(0, 0, getWindowWidth(), getWindowHeight());    // used to be glViewport( 0, 0, width, height );

  float * bgPtr = ofBgColorPtr();
  bool bClearAuto = ofbClearBg();

  if ( bClearAuto == true || nFrameCount < 3){
    ofClear(bgPtr[0]*255,bgPtr[1]*255,bgPtr[2]*255, bgPtr[3]*255);
  }

  if( bEnableSetupScreen ) ofSetupScreen(); // this calls into the current renderer (ofSetupScreenPerspective)

  ofNotifyDraw();

  eglSwapBuffers(eglDisplay, eglSurface);

  nFramesSinceWindowResized++;

  nFrameCount++;    // increase the overall frame count

  postDisplay();
}

//------------------------------------------------------------
float ofAppEGLWindow::getFrameRate(){
  return frameRate;
}

//------------------------------------------------------------
double ofAppEGLWindow::getLastFrameTime(){
  return lastFrameTime;
}

//------------------------------------------------------------
int ofAppEGLWindow::getFrameNum(){
  return nFrameCount;
}


ofRectangle ofAppEGLWindow::getScreenRect(){
	return 	currentWindowRect;
}

ofRectangle ofAppEGLWindow::requestNewWindowRect(const ofRectangle& rect){
	setWindowPosition(rect.x,rect.y);
	setWindowShape(rect.width,rect.height);
	return getScreenRect();
}

## ofAppEGLWindow.h
/*==============================================================================

 Copyright (c) 2011, 2012 Christopher Baker <http://christopherbaker.net>

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.

 modified by Philip Whitfield (http://www.undef.ch)

 ==============================================================================*/

#pragma once

#include "ofBaseApp.h"

#include "ofAppBaseWindow.h"

#ifndef TARGET_RASPBERRY_PI
	#include "X11/Xlib.h"
	#include "X11/Xutil.h"
#endif

class ofAppEGLWindow : public ofAppBaseWindow {
public:
	ofAppEGLWindow();
	virtual ~ofAppEGLWindow();

	virtual void setupOpenGL(int w, int h, int screenMode);

	virtual bool setupEGL(NativeWindowType nativeWindow, NativeDisplayType * display=NULL);
	virtual void destroyEGL();

	virtual void initializeWindow();
	virtual void runAppViaInfiniteLoop(ofBaseApp * appPtr);

	virtual void hideCursor();
	virtual void showCursor();

	virtual void	setWindowPosition(int x, int y);
	virtual void	setWindowShape(int w, int h);

	virtual int		getFrameNum();
	virtual float	getFrameRate();
	virtual double  getLastFrameTime();

	virtual ofPoint	getWindowPosition();
	virtual ofPoint	getWindowSize();
	virtual ofPoint	getScreenSize();

	virtual void			setOrientation(ofOrientation orientation);
	virtual ofOrientation	getOrientation();
	virtual bool			doesHWOrientation();

	//this is used by ofGetWidth and now determines the window width based on orientation
	virtual int		getWidth();
	virtual int		getHeight();

	virtual void	setFrameRate(float targetRate);
	virtual void	setWindowTitle(string title); // TODO const correct

	virtual int		getWindowMode(); // TODO use enum

	virtual void	setFullscreen(bool fullscreen);
	virtual void	toggleFullscreen();

	virtual void	enableSetupScreen();
	virtual void	disableSetupScreen();

protected:

	bool setupX11NativeWindow(int w, int h, int screenMode);
	bool setupRPiNativeWindow(int w, int h, int screenMode);

	void idle();
	virtual void postIdle() {};
	void display();
	virtual void postDisplay() {};

	void infiniteLoop();

	void setWindowRect(const ofRectangle& requestedWindowRect) {
		if(requestedWindowRect != currentWindowRect) {
			ofRectangle oldWindowRect = currentWindowRect;

			currentWindowRect = requestNewWindowRect(requestedWindowRect);

			if(oldWindowRect != currentWindowRect) {
				ofNotifyWindowResized(currentWindowRect.width,currentWindowRect.height);
				nFramesSinceWindowResized = 0;
			}
		}
	}

	virtual ofRectangle getScreenRect();
	virtual ofRectangle requestNewWindowRect(const ofRectangle&);
	int getWindowWidth() {
		return currentWindowRect.width;
	}


	int getWindowHeight() {
		return currentWindowRect.height;
	}

	bool     terminate;

	int      windowMode;
	bool     bNewScreenMode;
	float    timeNow, timeThen, fps;
	int      nFramesForFPS;
	int      nFrameCount;
	int      buttonInUse;
	bool     bEnableSetupScreen;


	bool     bFrameRateSet;
	int      millisForFrame;
	int      prevMillis;
	int      diffMillis;

	float    frameRate;

	double   lastFrameTime;

//	int      requestedWidth;
//	int      requestedHeight;
//	int      nonFullScreenX;
//	int      nonFullScreenY;
//	int      windowW;
//	int      windowH;
	string   eglDisplayString;
	int      nFramesSinceWindowResized;
	ofOrientation orientation;
	ofBaseApp *  ofAppPtr;

	// TODO thread for keyboard and mouse input?


	// EGL window
	ofRectangle screenRect;
	ofRectangle nonFullscreenWindowRect; // the rectangle describing the non-fullscreen window
	ofRectangle currentWindowRect; // the rectangle describing the current device

	EGLDisplay eglDisplay;  // EGL display connection
	EGLSurface eglSurface;
	EGLContext eglContext;


#ifdef TARGET_RASPBERRY_PI
  // NOTE: EGL_DISPMANX_WINDOW_T nativeWindow is a var that must stay in scope
  EGL_DISPMANX_WINDOW_T nativeWindow; // rpi
#else
  Window nativeWindow; // x11
#endif


};
	/*==============================================================================

	Copyright (c) 2011, 2012 Christopher Baker <http://christopherbaker.net>

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.

	Modified by Philip Whitfield (undef.ch)

	==============================================================================*/
	#include "ofAppEGLWindow.h"

	#include "ofGraphics.h" // used in runAppViaInfiniteLoop()
	#include "ofAppRunner.h"
	#include "ofUtils.h"
	#include "ofFileUtils.h"
	#include <assert.h>

	// TODO. we may not need these to be static, but we will
	// leave it this way for now in case future EGL windows
	// use static callbacks (like glut)

	//------------------------------------------------------------
	ofAppEGLWindow::ofAppEGLWindow() {
	terminate = false;

	timeNow = 0;
	timeThen = 0;
	fps = 60.0; //give a realistic starting value - win32 issues
	frameRate = 60.0;
	windowMode = OF_WINDOW;
	bNewScreenMode = true;
	nFramesForFPS = 0;
	nFramesSinceWindowResized = 0;
	nFrameCount = 0;
	buttonInUse = 0;
	bEnableSetupScreen = true;
	bFrameRateSet = false;
	millisForFrame = 0;
	prevMillis = 0;
	diffMillis = 0;
	// requestedWidth = 0;
	// requestedHeight = 0;
	// nonFullScreenX = -1;
	// nonFullScreenY = -1;
	lastFrameTime = 0.0;
	eglDisplayString = "";
	orientation = OF_ORIENTATION_DEFAULT;

	cout << "ofAppEGLWindow constructor " << endl;
	}

	//------------------------------------------------------------
	ofAppEGLWindow::~ofAppEGLWindow() {

	}

	//------------------------------------------------------------
	bool ofAppEGLWindow::setupRPiNativeWindow(int w, int h, int screenMode){

	#ifdef TARGET_RASPBERRY_PI
	bcm_host_init();

	//boolean force HDMI vs. composite

	int32_t success = 0;

	uint32_t sw;
	uint32_t sh;

	// create an EGL window surface
	// IF SCREENMODE==FULLSCREEN
	success = graphics_get_display_size(0 /* LCD */, &sw, &sh);

	cout << "succes=" << success << endl;

	if(success < 0) {
	cout << "tried to get display, but failed." << endl;
	return false;
	}

	cout << " REQUESTED SCREEN SIZE w=" << w << " and h=" << h << endl;
	cout << "HARDWARE SCREEN SIZE IS sw=" << sw << " and sh=" << sh << endl;

	if(screenMode == OF_WINDOW) {
	sw = MIN(sw,w);
	sh = MIN(sh,h);
	} else {
	// OF_FULLSCREEN and GAME take the screen size
	}

	cout << "CREATING A SCREEN THAT IS w=" << sw << " and h=" << sh << endl;


	//////////////////////////
	VC_RECT_T dst_rect;
	VC_RECT_T src_rect;

	dst_rect.x = 0;
	dst_rect.y = 0;
	dst_rect.width = sw;
	dst_rect.height = sh;

	src_rect.x = 0;
	src_rect.y = 0;
	src_rect.width = sw << 16;
	src_rect.height = sh << 16;

	DISPMANX_ELEMENT_HANDLE_T dispman_element;
	DISPMANX_DISPLAY_HANDLE_T dispman_display;
	DISPMANX_UPDATE_HANDLE_T dispman_update;


	dispman_display = vc_dispmanx_display_open( 0 /* LCD */);
	dispman_update = vc_dispmanx_update_start( 0 );

	dispman_element = vc_dispmanx_element_add ( dispman_update,
	dispman_display,
	0/layer/,
	&dst_rect,
	0/src/,
	&src_rect,
	DISPMANX_PROTECTION_NONE,
	0 /alpha/,
	0/clamp/,
	(DISPMANX_TRANSFORM_T)0/transform/
	);

	nativeWindow.element = dispman_element;
	nativeWindow.width = sw;
	nativeWindow.height = sh;

	vc_dispmanx_update_submit_sync( dispman_update );

	return setupEGL(&nativeWindow,NULL);

	#else
	return false;
	#endif

	}

	//------------------------------------------------------------
	bool ofAppEGLWindow::setupX11NativeWindow(int w, int h, int screenMode){
	#ifndef TARGET_RASPBERRY_PI

	// X11 variables
	Window x11Window = 0;
	Display* x11Display = 0;
	long x11Screen = 0;
	XVisualInfo* x11Visual = 0;
	Colormap x11Colormap = 0;
	/*
	Step 0 - Create a NativeWindowType that we can use it for OpenGL ES output
	*/
	Window sRootWindow;
	XSetWindowAttributes sWA;
	unsigned int ui32Mask;
	int i32Depth;

	// Initializes the display and screen
	x11Display = XOpenDisplay( 0 );
	if (!x11Display)
	{
	ofLogError()<< "Error: Unable to open X display";
	return false;
	}
	x11Screen = XDefaultScreen( x11Display );

	// Gets the window parameters
	sRootWindow = RootWindow(x11Display, x11Screen);
	i32Depth = DefaultDepth(x11Display, x11Screen);
	x11Visual = new XVisualInfo;
	XMatchVisualInfo( x11Display, x11Screen, i32Depth, TrueColor, x11Visual);
	if (!x11Visual)
	{
	ofLogError()<< "Error: Unable to acquire visual";
	return false;
	}
	x11Colormap = XCreateColormap( x11Display, sRootWindow, x11Visual->visual, AllocNone );
	sWA.colormap = x11Colormap;

	// Add to these for handling other events
	sWA.event_mask = StructureNotifyMask \| ExposureMask \| ButtonPressMask \| ButtonReleaseMask \| KeyPressMask \| KeyReleaseMask;
	ui32Mask = CWBackPixel \| CWBorderPixel \| CWEventMask \| CWColormap;

	// Creates the X11 window
	x11Window = XCreateWindow( x11Display, RootWindow(x11Display, x11Screen), 0, 0, w, h,
	0, CopyFromParent, InputOutput, CopyFromParent, ui32Mask, &sWA);
	XMapWindow(x11Display, x11Window);
	XFlush(x11Display);

	return setupEGL(&x11Window,x11Display);

	#else
	return false;
	#endif

	}


	//------------------------------------------------------------
	void ofAppEGLWindow::setupOpenGL(int w, int h, int screenMode) {

	cout << "in ofAppEGLWINDOW: setupOpenGL" << endl;

	windowMode = screenMode;
	bNewScreenMode = true;

	if(windowMode == OF_GAME_MODE) {
	ofLogWarning("ofAppEGLWindow") << "OF_GAME_MODE not supported.";
	}

	//windowW = requestedWidth = getWindowWidth();
	//windowH = requestedHeight = getWindowHeight();



	#ifdef TARGET_RASPBERRY_PI
	bool success = setupRPiNativeWindow(w,h,screenMode);
	#else
	bool success = setupX11NativeWindow(w,h,screenMode);
	#endif

	if(!success) {
	cout << "CREATED screen failed " << w << " x " << h << endl;
	} else {
	cout << "CREATED SCREEN WITH SIZE " << w << " x " << h << endl;
	}



	// TEMPORARY -- screenRect info must be set in setups

	screenRect.x = 0;
	screenRect.y = 0;
	screenRect.width = nativeWindow.width;
	screenRect.height = nativeWindow.height;

	nonFullscreenWindowRect = screenRect;
	currentWindowRect = screenRect;

	}

	//------------------------------------------------------------
	bool ofAppEGLWindow::setupEGL(NativeWindowType nativeWindow, NativeDisplayType * display)
	{

	EGLBoolean result;
	EGLint num_config;
	EGLConfig config;

	ofLogNotice("ofAppEGLWindow::setupEGL") << "setting EGL Display";
	// get an EGL eglDisplay connection

	if(display==NULL){
	ofLogNotice("ofAppEGLWindow::setupEGL") << "setting default Display";
	eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
	}else{
	ofLogNotice("ofAppEGLWindow::setupEGL") << "setting argument Display";
	eglDisplay = eglGetDisplay(display);
	}

	if(eglDisplay == EGL_NO_DISPLAY) {
	ofLogError("ofAppEGLWindow::setupEGL") << "eglGetDisplay returned: " << eglDisplay;
	return false;
	}else{
	ofLogNotice("ofAppEGLWindow::setupEGL") << "EGL Display correctly set";
	}

	EGLint eglVersionMajor = 0;
	EGLint eglVersionMinor = 0;

	// initialize the EGL eglDisplay connection
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglInitialize";
	result = eglInitialize(eglDisplay, &eglVersionMajor, &eglVersionMinor);

	if(result == EGL_BAD_DISPLAY) {
	// eglDisplay is not an EGL connection
	ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_BAD_DISPLAY";
	return false;
	} else if(result == EGL_NOT_INITIALIZED) {
	// eglDisplay cannot be intitialized
	ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_NOT_INITIALIZED";
	return false;
	} else if(result == EGL_FALSE) {
	// eglinitialize was not initialiezd
	ofLogError("ofAppEGLWindow::setupEGL") << "eglInitialize returned EGL_FALSE";
	return false;
	} else {
	// result == EGL_TRUE
	// success!
	}

	// TODO -- give the ability to send in this list when setting up.
	static const EGLint attribute_list[] =
	{
	EGL_RED_SIZE, 8, // 8 bits for red
	EGL_GREEN_SIZE, 8, // 8 bits for green
	EGL_BLUE_SIZE, 8, // 8 bits for blue
	EGL_ALPHA_SIZE, 8, // 8 bits for alpha
	EGL_SURFACE_TYPE, EGL_WINDOW_BIT, // default eglSurface type
	EGL_NONE // attribute list is termintated with EGL_NONE
	};

	// get an appropriate EGL frame buffer configuration
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglChooseConfig";
	result = eglChooseConfig(eglDisplay,
	attribute_list,
	&config,
	1,
	&num_config);

	assert(EGL_FALSE != result);

	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglCreateWindowSurface";
	eglSurface = eglCreateWindowSurface( eglDisplay, config, nativeWindow, NULL );
	assert(eglSurface != EGL_NO_SURFACE);

	// create an EGL rendering eglContext
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglCreateContext";
	eglContext = eglCreateContext(eglDisplay, config, EGL_NO_CONTEXT, NULL);
	assert(eglContext != EGL_NO_CONTEXT);


	// connect the eglContext to the eglSurface
	ofLogNotice("ofAppEGLWindow::setupEGL") << "eglMakeCurrent";
	result = eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext);
	assert(EGL_FALSE != result);

	// Set background color and clear buffers
	glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
	glClear( GL_COLOR_BUFFER_BIT );
	glClear( GL_DEPTH_BUFFER_BIT );

	//ofSetCurrentRenderer(ofPtr<ofBaseRenderer>(new ofGLRenderer));

	return true;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::destroyEGL() {
	eglMakeCurrent( eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT );
	eglDestroySurface( eglDisplay, eglSurface );
	eglDestroyContext( eglDisplay, eglContext );
	eglTerminate( eglDisplay );
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::initializeWindow()
	{
	nFramesSinceWindowResized = 0;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::runAppViaInfiniteLoop(ofBaseApp *appPtr) {
	ofAppPtr = appPtr; // make a local copy

	ofNotifySetup();
	ofNotifyUpdate();

	// loop it!
	infiniteLoop();

	// we got a terminate ... so clean up.
	destroyEGL();
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::infiniteLoop() {
	while (!terminate) {
	idle();
	display();
	}
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::hideCursor(){
	ofLogNotice("ofAppEGLWindow") << "hideCursor() not implemented.";
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::showCursor(){
	ofLogNotice("ofAppEGLWindow") << "showCursor() not implemented.";
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setFrameRate(float targetRate){
	// given this FPS, what is the amount of millis per frame
	// that should elapse?

	// --- > f / s

	if (targetRate == 0){
	bFrameRateSet = false;
	return;
	}

	bFrameRateSet = true;
	float durationOfFrame = 1.0f / (float)targetRate;
	millisForFrame = (int)(1000.0f * durationOfFrame);

	frameRate = targetRate;

	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setWindowTitle(string title) {
	ofLogNotice("ofAppEGLWindow") << "setWindowTitle() not implemented.";
	}

	//------------------------------------------------------------
	ofPoint ofAppEGLWindow::getWindowSize(){
	return ofPoint(currentWindowRect.width, currentWindowRect.height,0);
	}

	//------------------------------------------------------------
	ofPoint ofAppEGLWindow::getWindowPosition(){
	return currentWindowRect.getPosition();
	}

	//------------------------------------------------------------
	ofPoint ofAppEGLWindow::getScreenSize(){
	return ofPoint(screenRect.width, screenRect.height,0);
	}

	//------------------------------------------------------------
	int ofAppEGLWindow::getWidth(){
	if( orientation == OF_ORIENTATION_DEFAULT \|\| orientation == OF_ORIENTATION_180 ){
	return currentWindowRect.width;
	}
	return currentWindowRect.height;
	}

	//------------------------------------------------------------
	int ofAppEGLWindow::getHeight(){
	if( orientation == OF_ORIENTATION_DEFAULT \|\| orientation == OF_ORIENTATION_180 ){
	return currentWindowRect.height;
	}
	return currentWindowRect.width;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setOrientation(ofOrientation orientationIn){
	orientation = orientationIn;
	}

	//------------------------------------------------------------
	ofOrientation ofAppEGLWindow::getOrientation(){
	return orientation;
	}

	//------------------------------------------------------------
	bool ofAppEGLWindow::doesHWOrientation() {
	return false;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setWindowPosition(int x, int y){
	// todo -- set window rect, etc, but if we are in fullscreen mode,
	// we won't change it.
	setWindowRect(ofRectangle(x,y,currentWindowRect.width,currentWindowRect.height));
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setWindowShape(int w, int h){
	// todo -- set window rect, etc, but if we are in fullscreen mode,
	// we won't change it.
	setWindowRect(ofRectangle(currentWindowRect.x,currentWindowRect.y,w,h));
	}



	//------------------------------------------------------------
	int ofAppEGLWindow::getWindowMode(){
	return windowMode;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::toggleFullscreen(){
	if( windowMode == OF_GAME_MODE)return;

	if( windowMode == OF_WINDOW ){
	setFullscreen(true);
	}else{
	setFullscreen(false);
	}

	}

	//------------------------------------------------------------
	void ofAppEGLWindow::setFullscreen(bool fullscreen){
	if( windowMode == OF_GAME_MODE)return;

	if(fullscreen && windowMode != OF_FULLSCREEN){
	bNewScreenMode = true;
	windowMode = OF_FULLSCREEN;
	}else if(!fullscreen && windowMode != OF_WINDOW) {
	bNewScreenMode = true;
	windowMode = OF_WINDOW;
	}
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::enableSetupScreen(){
	bEnableSetupScreen = true;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::disableSetupScreen(){
	bEnableSetupScreen = false;
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::idle() {
	// thanks to jorge for the fix:
	// http://www.openframeworks.cc/forum/viewtopic.php?t=515&highlight=frame+rate

	if (nFrameCount != 0 && bFrameRateSet == true){
	diffMillis = ofGetElapsedTimeMillis() - prevMillis;
	if (diffMillis > millisForFrame){
	; // we do nothing, we are already slower than target frame
	} else {
	int waitMillis = millisForFrame - diffMillis;
	usleep(waitMillis * 1000); //mac sleep in microseconds - cooler :)
	}
	}
	prevMillis = ofGetElapsedTimeMillis(); // you have to measure here

	timeNow = ofGetElapsedTimef();
	double diff = timeNow-timeThen;
	if( diff > 0.00001 ){
	fps = 1.0 / diff;
	frameRate *= 0.9f;
	frameRate += 0.1f*fps;
	}
	lastFrameTime = diff;
	timeThen = timeNow;
	// --------------

	ofNotifyUpdate();

	postIdle();
	}

	//------------------------------------------------------------
	void ofAppEGLWindow::display() {

	// take care of any requests for a new screen mode
	if (windowMode != OF_GAME_MODE){
	if ( bNewScreenMode ){
	if( windowMode == OF_FULLSCREEN){
	setWindowRect(getScreenRect());
	} else if( windowMode == OF_WINDOW ){
	setWindowRect(nonFullscreenWindowRect);
	}
	bNewScreenMode = false;
	}
	}

	///////////////////////////////////////////////////////////////////////////////////////
	// set viewport, clear the screen


	ofViewport(0, 0, getWindowWidth(), getWindowHeight()); // used to be glViewport( 0, 0, width, height );

	float * bgPtr = ofBgColorPtr();
	bool bClearAuto = ofbClearBg();

	if ( bClearAuto == true \|\| nFrameCount < 3){
	ofClear(bgPtr[0]255,bgPtr[1]255,bgPtr[2]255, bgPtr[3]255);
	}

	if( bEnableSetupScreen ) ofSetupScreen(); // this calls into the current renderer (ofSetupScreenPerspective)

	ofNotifyDraw();

	eglSwapBuffers(eglDisplay, eglSurface);

	nFramesSinceWindowResized++;

	nFrameCount++; // increase the overall frame count

	postDisplay();
	}

	//------------------------------------------------------------
	float ofAppEGLWindow::getFrameRate(){
	return frameRate;
	}

	//------------------------------------------------------------
	double ofAppEGLWindow::getLastFrameTime(){
	return lastFrameTime;
	}

	//------------------------------------------------------------
	int ofAppEGLWindow::getFrameNum(){
	return nFrameCount;
	}


	ofRectangle ofAppEGLWindow::getScreenRect(){
	return currentWindowRect;
	}

	ofRectangle ofAppEGLWindow::requestNewWindowRect(const ofRectangle& rect){
	setWindowPosition(rect.x,rect.y);
	setWindowShape(rect.width,rect.height);
	return getScreenRect();
	}