Abrindo uma janela OpenGL de tela inteira
Estou tentando abrir uma janela de tela cheia do OpenGL usando o GLFW no linux red-hat. Eu tenho um desktop que abrange dois monitores com resolução total de 3840 * 1080.
Eu tenho dois problemas: 1. A janela é aberta apenas em um monitor com largura máxima de janela de 1920 (a largura de um único monitor). 2. A altura máxima da janela é 1003 (que eu acho que é a altura da tela menos a altura da barra de tarefas e a barra superior).
Este é o código que eu uso para abrir a janela:
if (glfwInit() == GL_FALSE)
std::cout<< "Unable to initialize GLFW\n";
glfwOpenWindowHint(GLFW_STEREO, GL_FALSE);
if (glfwOpenWindow(3840,1080,8,8,8,0,24,0,GLFW_FULLSCREEN) == GL_FALSE)
std::cout<< "Unable to open window\n";
int width, height;
glfwGetWindowSize(&width, &height);
std::cout << "width = " << width << " height = " << height << "\n";
saída: largura = 1920 altura = 1003
EDIT: eu usei xrandr para verificar o modo de tela disponível e tenho:
Tela 0: mínimo de 3840 x 1080, atual de 3840 x 1080, máxima de 3840 x 1080 padrão conectada 3840x1080 + 0 + 0 0mm x 0mm 3840x1080 50,0 *
EDIT2: Eu mudei meu código para abrir a janela usando o X11
int doubleBufferAttributes[] = {
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DOUBLEBUFFER, True, /* Request a double-buffered color buffer with */
GLX_RED_SIZE, 1, /* the maximum number of bits per component */
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
None
};
static Bool WaitForNotify( Display *dpy, XEvent *event, XPointer arg ) {
return (event->type == MapNotify) && (event->xmap.window == (Window) arg);
}
int main( int argc, char *argv[] )
{
Display *dpy;
Window xWin;
XEvent event;
XVisualInfo *vInfo;
XSetWindowAttributes swa;
GLXFBConfig *fbConfigs;
GLXContext context;
GLXWindow glxWin;
int swaMask;
int numReturned;
int swapFlag = True;
/* Open a connection to the X server */
dpy = XOpenDisplay( NULL );
if ( dpy == NULL ) {
printf( "Unable to open a connection to the X server\n" );
exit( EXIT_FAILURE );
}
/* Request a suitable framebuffer configuration - try for a double
** buffered configuration first */
fbConfigs = glXChooseFBConfig( dpy, DefaultScreen(dpy),
doubleBufferAttributes, &numReturned );
/* Create an X colormap and window with a visual matching the first
** returned framebuffer config */
vInfo = glXGetVisualFromFBConfig( dpy, fbConfigs[0] );
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
swa.colormap = XCreateColormap( dpy, RootWindow(dpy, vInfo->screen),
vInfo->visual, AllocNone );
swaMask = CWBorderPixel | CWColormap | CWEventMask;
xWin = XCreateWindow( dpy, RootWindow(dpy, vInfo->screen), 0, 0, 3840, 1080,
0, vInfo->depth, InputOutput, vInfo->visual,
swaMask, &swa );
XWindowAttributes attt;
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "he = " << attt.height << " wi = " << attt.width << "\n";
/* Create a GLX context for OpenGL rendering */
context = glXCreateNewContext( dpy, fbConfigs[0], GLX_RGBA_TYPE,
NULL, True );
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "2he = " << attt.height << " wi = " << attt.width << "\n";
/* Create a GLX window to associate the frame buffer configuration
** with the created X window */
glxWin = glXCreateWindow( dpy, fbConfigs[0], xWin, NULL );
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "3he = " << attt.height << " wi = " << attt.width << "\n";
/* Map the window to the screen, and wait for it to appear */
XMapWindow( dpy, xWin );
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "4he = " << attt.height << " wi = " << attt.width << "\n";
XIfEvent( dpy, &event, WaitForNotify, (XPointer) xWin );
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "5he = " << attt.height << " wi = " << attt.width << "\n";
/* Bind the GLX context to the Window */
glXMakeContextCurrent( dpy, glxWin, glxWin, context );
XGetWindowAttributes( dpy,xWin, &attt);
std::cout << "6he = " << attt.height << " wi = " << attt.width << "\n";
a saída é:
he = 1080 wi = 3840
2he = 1080 wi = 3840
3he = 1080 wi = 3840
4he = 1080 wi = 3840
5he = 1003 wi = 1920
6he = 1003 wi = 1920
parece que quando a janela é exibida, seu tamanho diminui.