NativeWindowType X11Windowing::createNativeWindow(NativeDisplayType _dpy, int width, int height)
{
Display *dpy = (Display *) _dpy;
long defaultScreen = DefaultScreen( dpy );
Window rootWindow = RootWindow(dpy, defaultScreen);
int depth = DefaultDepth(dpy, defaultScreen);
XVisualInfo *visualInfo = new XVisualInfo;
XMatchVisualInfo(dpy, defaultScreen, depth, TrueColor, visualInfo);
if (visualInfo == NULL) {
fprintf(stderr, "couldn't find matching visual\n");
return NULL;
}
Colormap x11Colormap = XCreateColormap(dpy, rootWindow, visualInfo->visual, AllocNone);
XSetWindowAttributes sWA;
sWA.colormap = x11Colormap;
sWA.event_mask = StructureNotifyMask | ExposureMask;
sWA.background_pixel = 0;
sWA.border_pixel = 0;
unsigned int attributes_mask = CWBackPixel | CWBorderPixel | CWEventMask | CWColormap;
Window win = XCreateWindow( dpy,
rootWindow,
0, 0, width, height,
0, CopyFromParent, InputOutput,
CopyFromParent, attributes_mask, &sWA);
XMapWindow(dpy, win);
XFlush(dpy);
return NativeWindowType(win);
}
//=================================================================================================================================
///
/// Funtion to create the EGL window.
///
/// \param hWnd the parent window HWND.
/// \param hInstance the class instance.
///
/// \return 1 = pass; 0 = fail.
//=================================================================================================================================
int CreateEGLContext( HWND hWnd, HINSTANCE hInstance )
{
EGLint attribList[MAX_EGL_ATTRIBUTES];
EGLint numConfigs;
EGLint majorVersion;
EGLint minorVersion;
/// Build up the attribute list
BuildAttribList( attribList );
// Get Display
g_egl.dsp = eglGetDisplay( EGL_DEFAULT_DISPLAY );
if ( g_egl.dsp == EGL_NO_DISPLAY )
{
assert( 0 && "eglGetDisplay failed" );
return FALSE;
}
// Initialize EGL
if ( ! eglInitialize( g_egl.dsp, &majorVersion, &minorVersion) )
{
assert( 0 && "eglInitialize failed" );
return FALSE;
}
// Get configs
if ( ! eglGetConfigs( g_egl.dsp, NULL, 0, &numConfigs ) )
{
assert( 0 && "eglGetConfigs failed" );
return FALSE;
}
// Choose config
if ( !eglChooseConfig(g_egl.dsp, attribList, &g_egl.cfg, 1, &numConfigs) )
{
assert( 0 && "eglChooseConfig failed" );
return FALSE;
}
// Create a surface
g_egl.surf = eglCreateWindowSurface( g_egl.dsp, g_egl.cfg, NativeWindowType( hWnd ), NULL );
if ( g_egl.surf == EGL_NO_SURFACE )
{
assert( 0 && "eglCreateWindowSurface failed" );
return FALSE;
}
// Create a GL context
EGLint ctxAttribList[] = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};
g_egl.cxt = eglCreateContext( g_egl.dsp, g_egl.cfg, EGL_NO_CONTEXT, ctxAttribList );
if ( g_egl.cxt == EGL_NO_CONTEXT )
{
assert( 0 && "eglCreateContext failed" );
return FALSE;
}
// Make the context current
if ( ! eglMakeCurrent( g_egl.dsp, g_egl.surf, g_egl.surf, g_egl.cxt ) )
{
assert( 0 && "eglMakeCurrent failed" );
return FALSE;
}
return TRUE;
}
