Exemplo n.º 1
0
XVisualInfo EglContext::selectBestVisual(::Display* XDisplay, unsigned int bitsPerPixel, const ContextSettings& settings)
{
    // Get the initialized EGL display
    EGLDisplay display = getInitializedDisplay();

    // Get the best EGL config matching the default video settings
    EGLConfig config = getBestConfig(display, bitsPerPixel, settings);

    // Retrieve the visual id associated with this EGL config
    EGLint nativeVisualId;

    eglCheck(eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &nativeVisualId));

    if (nativeVisualId == 0)
    {
        // Should never happen...
        err() << "No EGL visual found. You should check your graphics driver" << std::endl;

        return XVisualInfo();
    }

    XVisualInfo vTemplate;
    vTemplate.visualid = static_cast<VisualID>(nativeVisualId);

    // Get X11 visuals compatible with this EGL config
    XVisualInfo *availableVisuals, bestVisual;
    int visualCount = 0;

    availableVisuals = XGetVisualInfo(XDisplay, VisualIDMask, &vTemplate, &visualCount);

    if (visualCount == 0)
    {
        // Can't happen...
        err() << "No X11 visual found. Bug in your EGL implementation ?" << std::endl;

        return XVisualInfo();
    }

    // Pick up the best one
    bestVisual = availableVisuals[0];
    XFree(availableVisuals);

    return bestVisual;
}
Exemplo n.º 2
0
XVisualInfo GlxContext::selectBestVisual(::Display* display, unsigned int bitsPerPixel, const ContextSettings& settings)
{
    // Retrieve all the visuals
    int count;
    XVisualInfo* visuals = XGetVisualInfo(display, 0, NULL, &count);
    if (visuals)
    {
        // Evaluate all the returned visuals, and pick the best one
        int bestScore = 0xFFFF;
        XVisualInfo bestVisual;
        for (int i = 0; i < count; ++i)
        {
            // Check mandatory attributes
            int doubleBuffer;
            glXGetConfig(display, &visuals[i], GLX_DOUBLEBUFFER, &doubleBuffer);
            if (!doubleBuffer)
                continue;

            // Extract the components of the current visual
            int red, green, blue, alpha, depth, stencil, multiSampling, samples;
            glXGetConfig(display, &visuals[i], GLX_RED_SIZE,           &red);
            glXGetConfig(display, &visuals[i], GLX_GREEN_SIZE,         &green);
            glXGetConfig(display, &visuals[i], GLX_BLUE_SIZE,          &blue);
            glXGetConfig(display, &visuals[i], GLX_ALPHA_SIZE,         &alpha);
            glXGetConfig(display, &visuals[i], GLX_DEPTH_SIZE,         &depth);
            glXGetConfig(display, &visuals[i], GLX_STENCIL_SIZE,       &stencil);
            glXGetConfig(display, &visuals[i], GLX_SAMPLE_BUFFERS_ARB, &multiSampling);
            glXGetConfig(display, &visuals[i], GLX_SAMPLES_ARB,        &samples);

            // Evaluate the visual
            int color = red + green + blue + alpha;
            int score = evaluateFormat(bitsPerPixel, settings, color, depth, stencil, multiSampling ? samples : 0);

            // If it's better than the current best, make it the new best
            if (score < bestScore)
            {
                bestScore = score;
                bestVisual = visuals[i];
            }
        }

        // Free the array of visuals
        XFree(visuals);

        return bestVisual;
    }
    else
    {
        // Should never happen...
        err() << "No GLX visual found. You should check your graphics driver" << std::endl;

        return XVisualInfo();
    }
}
Exemplo n.º 3
0
Window::Window (Display& display, int width, int height, ::Visual* visual)
	: m_display		(display)
	, m_colormap	(None)
	, m_window		(None)
	, m_visible		(false)
{
	XSetWindowAttributes	swa;
	::Display* const		dpy					= m_display.getXDisplay();
	::Window				root				= DefaultRootWindow(dpy);
	unsigned long			mask				= CWBorderPixel | CWEventMask;

	// If redirect is enabled, window size can't be guaranteed and it is up to
	// the window manager to decide whether to honor sizing requests. However,
	// overriding that causes window to appear as an overlay, which causes
	// other issues, so this is disabled by default.
	const bool				overrideRedirect	= false;

	if (overrideRedirect)
	{
		mask |= CWOverrideRedirect;
		swa.override_redirect = true;
	}

	if (visual == DE_NULL)
		visual = CopyFromParent;
	else
	{
		XVisualInfo	info	= XVisualInfo();
		bool		succ	= display.getVisualInfo(XVisualIDFromVisual(visual), info);

		TCU_CHECK_INTERNAL(succ);

		root				= RootWindow(dpy, info.screen);
		m_colormap			= XCreateColormap(dpy, root, visual, AllocNone);
		swa.colormap		= m_colormap;
		mask |= CWColormap;
	}

	swa.border_pixel	= 0;
	swa.event_mask		= ExposureMask|KeyPressMask|KeyReleaseMask|StructureNotifyMask;

	if (width == glu::RenderConfig::DONT_CARE)
		width = DEFAULT_WINDOW_WIDTH;
	if (height == glu::RenderConfig::DONT_CARE)
		height = DEFAULT_WINDOW_HEIGHT;

	m_window = XCreateWindow(dpy, root, 0, 0, width, height, 0,
							 CopyFromParent, InputOutput, visual, mask, &swa);
	TCU_CHECK(m_window);

	Atom deleteAtom = m_display.getDeleteAtom();
	XSetWMProtocols(dpy, m_window, &deleteAtom, 1);
}
Window::Window (Display& display, int width, int height, ::Visual* visual)
	: m_display		(display)
	, m_colormap	(None)
	, m_window		(None)
	, m_visible		(false)
{
	XSetWindowAttributes	swa;
	::Display*				dpy	= m_display.getXDisplay();
	::Window				root = DefaultRootWindow(dpy);
	unsigned long			mask = CWBorderPixel | CWEventMask;

	if (visual == DE_NULL)
		visual = CopyFromParent;
	else
	{
		XVisualInfo	info	= XVisualInfo();
		bool		succ	= display.getVisualInfo(XVisualIDFromVisual(visual), info);

		TCU_CHECK_INTERNAL(succ);

		root				= RootWindow(dpy, info.screen);
		m_colormap			= XCreateColormap(dpy, root, visual, AllocNone);
		swa.colormap		= m_colormap;
		mask |= CWColormap;
	}

	swa.border_pixel	= 0;
	swa.event_mask		= ExposureMask|KeyPressMask|KeyReleaseMask|StructureNotifyMask;

	mask |= CWOverrideRedirect;
	swa.override_redirect = true;

	if (width == glu::RenderConfig::DONT_CARE)
		width = DEFAULT_WINDOW_WIDTH;
	if (height == glu::RenderConfig::DONT_CARE)
		height = DEFAULT_WINDOW_HEIGHT;

	m_window = XCreateWindow(dpy, root, 0, 0, width, height, 0,
							 CopyFromParent, InputOutput, visual, mask, &swa);
	TCU_CHECK(m_window);

	Atom deleteAtom = m_display.getDeleteAtom();
	XSetWMProtocols(dpy, m_window, &deleteAtom, 1);

}