void LanczosFilter::init()
{
    if (m_inited)
        return;
    m_inited = true;
    const bool force = (qstrcmp(qgetenv("KWIN_FORCE_LANCZOS"), "1") == 0);
    if (force) {
        kWarning(1212) << "Lanczos Filter forced on by environment variable";
    }

    if (!force && options->glSmoothScale() != 2)
        return; // disabled by config

    // The lanczos filter is reported to be broken with the Intel driver and Mesa 7.10
    GLPlatform *gl = GLPlatform::instance();
    if (!force && gl->driver() == Driver_Intel && gl->mesaVersion() >= kVersionNumber(7, 10) && gl->chipClass() < SandyBridge)
        return;
    // With fglrx the ARB Shader crashes KWin (see Bug #270818 and #286795) and GLSL Shaders are not functional
    if (!force && gl->driver() == Driver_Catalyst) {
        return;
    }

    m_shader = new LanczosShader(this);
    if (!m_shader->init()) {
        delete m_shader;
        m_shader = 0;
    }
}
Example #2
0
bool BlurEffect::enabledByDefault()
{
    GLPlatform *gl = GLPlatform::instance();

    if (gl->isIntel() && gl->chipClass() < SandyBridge)
        return false;

    return true;
}
Example #3
0
GLPlatform* GLPlatform::create()
{
	GLPlatform*	pGLPlatform	= new GLPlatform();

	if (false == pGLPlatform->initialize())
	{
		delete	pGLPlatform;

		pGLPlatform	= NULL;
	}

	return	pGLPlatform;
}
Example #4
0
void AbstractEglBackend::initKWinGL()
{
    initEGL();
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect(EglPlatformInterface);
    if (GLPlatform::instance()->driver() == Driver_Intel)
        options->setUnredirectFullscreen(false); // bug #252817
    options->setGlPreferBufferSwap(options->glPreferBufferSwap()); // resolve autosetting
    if (options->glPreferBufferSwap() == Options::AutoSwapStrategy)
        options->setGlPreferBufferSwap('e'); // for unknown drivers - should not happen
    glPlatform->printResults();
    initGL(EglPlatformInterface);
}
void EglWaylandBackend::init()
{
    if (!initRenderingContext()) {
        setFailed("Could not initialize rendering context");
        return;
    }

    initEGL();
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect(EglPlatformInterface);
    glPlatform->printResults();
    initGL(EglPlatformInterface);

    setSupportsBufferAge(false);

    if (hasGLExtension("EGL_EXT_buffer_age")) {
        const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");

        if (useBufferAge != "0")
            setSupportsBufferAge(true);
    }
}
Example #6
0
void EglOnXBackend::init()
{
    if (!initRenderingContext()) {
        setFailed(QStringLiteral("Could not initialize rendering context"));
        return;
    }

    initEGL();
    if (!hasGLExtension(QStringLiteral("EGL_KHR_image")) &&
        (!hasGLExtension(QStringLiteral("EGL_KHR_image_base")) ||
         !hasGLExtension(QStringLiteral("EGL_KHR_image_pixmap")))) {
        setFailed(QStringLiteral("Required support for binding pixmaps to EGLImages not found, disabling compositing"));
        return;
    }
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect(EglPlatformInterface);
    if (GLPlatform::instance()->driver() == Driver_Intel)
        options->setUnredirectFullscreen(false); // bug #252817
    options->setGlPreferBufferSwap(options->glPreferBufferSwap()); // resolve autosetting
    if (options->glPreferBufferSwap() == Options::AutoSwapStrategy)
        options->setGlPreferBufferSwap('e'); // for unknown drivers - should not happen
    glPlatform->printResults();
    initGL(EglPlatformInterface);
    if (!hasGLExtension(QStringLiteral("GL_OES_EGL_image"))) {
        setFailed(QStringLiteral("Required extension GL_OES_EGL_image not found, disabling compositing"));
        return;
    }

    // check for EGL_NV_post_sub_buffer and whether it can be used on the surface
    if (eglPostSubBufferNV) {
        if (eglQuerySurface(dpy, surface, EGL_POST_SUB_BUFFER_SUPPORTED_NV, &surfaceHasSubPost) == EGL_FALSE) {
            EGLint error = eglGetError();
            if (error != EGL_SUCCESS && error != EGL_BAD_ATTRIBUTE) {
                setFailed(QStringLiteral("query surface failed"));
                return;
            } else {
                surfaceHasSubPost = EGL_FALSE;
            }
        }
    }

    setSupportsBufferAge(false);

    if (hasGLExtension("EGL_EXT_buffer_age")) {
        const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");

        if (useBufferAge != "0")
            setSupportsBufferAge(true);
    }

    setSyncsToVBlank(false);
    setBlocksForRetrace(false);
    gs_tripleBufferNeedsDetection = false;
    m_swapProfiler.init();
    if (surfaceHasSubPost) {
        qDebug() << "EGL implementation and surface support eglPostSubBufferNV, let's use it";

        if (options->glPreferBufferSwap() != Options::NoSwapEncourage) {
            // check if swap interval 1 is supported
            EGLint val;
            eglGetConfigAttrib(dpy, config, EGL_MAX_SWAP_INTERVAL, &val);
            if (val >= 1) {
                if (eglSwapInterval(dpy, 1)) {
                    qDebug() << "Enabled v-sync";
                    setSyncsToVBlank(true);
                    const QByteArray tripleBuffer = qgetenv("KWIN_TRIPLE_BUFFER");
                    if (!tripleBuffer.isEmpty()) {
                        setBlocksForRetrace(qstrcmp(tripleBuffer, "0") == 0);
                        gs_tripleBufferUndetected = false;
                    }
                    gs_tripleBufferNeedsDetection = gs_tripleBufferUndetected;
                }
            } else {
                qWarning() << "Cannot enable v-sync as max. swap interval is" << val;
            }
        } else {
            // disable v-sync
            eglSwapInterval(dpy, 0);
        }
    } else {
        /* In the GLX backend, we fall back to using glCopyPixels if we have no extension providing support for partial screen updates.
         * However, that does not work in EGL - glCopyPixels with glDrawBuffer(GL_FRONT); does nothing.
         * Hence we need EGL to preserve the backbuffer for us, so that we can draw the partial updates on it and call
         * eglSwapBuffers() for each frame. eglSwapBuffers() then does the copy (no page flip possible in this mode),
         * which means it is slow and not synced to the v-blank. */
        qWarning() << "eglPostSubBufferNV not supported, have to enable buffer preservation - which breaks v-sync and performance";
        eglSurfaceAttrib(dpy, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
    }
}
Example #7
0
void GlxBackend::init()
{
    initGLX();
    // require at least GLX 1.3
    if (!hasGLXVersion(1, 3)) {
        setFailed(QStringLiteral("Requires at least GLX 1.3"));
        return;
    }
    if (!initDrawableConfigs()) {
        setFailed(QStringLiteral("Could not initialize the drawable configs"));
        return;
    }
    if (!initBuffer()) {
        setFailed(QStringLiteral("Could not initialize the buffer"));
        return;
    }
    if (!initRenderingContext()) {
        setFailed(QStringLiteral("Could not initialize rendering context"));
        return;
    }
    // Initialize OpenGL
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect(GlxPlatformInterface);
    if (GLPlatform::instance()->driver() == Driver_Intel)
        options->setUnredirectFullscreen(false); // bug #252817
    options->setGlPreferBufferSwap(options->glPreferBufferSwap()); // resolve autosetting
    if (options->glPreferBufferSwap() == Options::AutoSwapStrategy)
        options->setGlPreferBufferSwap('e'); // for unknown drivers - should not happen
    glPlatform->printResults();
    initGL(GlxPlatformInterface);

    // Check whether certain features are supported
    haveSwapInterval = glXSwapIntervalMESA || glXSwapIntervalEXT || glXSwapIntervalSGI;

    setSupportsBufferAge(false);

    if (hasGLExtension("GLX_EXT_buffer_age")) {
        const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");

        if (useBufferAge != "0")
            setSupportsBufferAge(true);
    }

    setSyncsToVBlank(false);
    setBlocksForRetrace(false);
    haveWaitSync = false;
    gs_tripleBufferNeedsDetection = false;
    m_swapProfiler.init();
    const bool wantSync = options->glPreferBufferSwap() != Options::NoSwapEncourage;
    if (wantSync && glXIsDirect(display(), ctx)) {
        if (haveSwapInterval) { // glXSwapInterval is preferred being more reliable
            setSwapInterval(1);
            setSyncsToVBlank(true);
            const QByteArray tripleBuffer = qgetenv("KWIN_TRIPLE_BUFFER");
            if (!tripleBuffer.isEmpty()) {
                setBlocksForRetrace(qstrcmp(tripleBuffer, "0") == 0);
                gs_tripleBufferUndetected = false;
            }
            gs_tripleBufferNeedsDetection = gs_tripleBufferUndetected;
        } else if (glXGetVideoSync) {
            unsigned int sync;
            if (glXGetVideoSync(&sync) == 0 && glXWaitVideoSync(1, 0, &sync) == 0) {
                setSyncsToVBlank(true);
                setBlocksForRetrace(true);
                haveWaitSync = true;
            } else
                qWarning() << "NO VSYNC! glXSwapInterval is not supported, glXWaitVideoSync is supported but broken";
        } else
            qWarning() << "NO VSYNC! neither glSwapInterval nor glXWaitVideoSync are supported";
    } else {
        // disable v-sync (if possible)
        setSwapInterval(0);
    }
    if (glPlatform->isVirtualBox()) {
        // VirtualBox does not support glxQueryDrawable
        // this should actually be in kwinglutils_funcs, but QueryDrawable seems not to be provided by an extension
        // and the GLPlatform has not been initialized at the moment when initGLX() is called.
        glXQueryDrawable = NULL;
    }

    setIsDirectRendering(bool(glXIsDirect(display(), ctx)));

    qDebug() << "Direct rendering:" << isDirectRendering() << endl;
}
Example #8
0
void GlxBackend::init()
{
    initGLX();

    // Require at least GLX 1.3
    if (!hasGLXVersion(1, 3)) {
        setFailed(QStringLiteral("Requires at least GLX 1.3"));
        return;
    }

    initVisualDepthHashTable();

    if (!initBuffer()) {
        setFailed(QStringLiteral("Could not initialize the buffer"));
        return;
    }

    if (!initRenderingContext()) {
        setFailed(QStringLiteral("Could not initialize rendering context"));
        return;
    }

    // Initialize OpenGL
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect(GlxPlatformInterface);
    if (GLPlatform::instance()->driver() == Driver_Intel)
        options->setUnredirectFullscreen(false); // bug #252817
    options->setGlPreferBufferSwap(options->glPreferBufferSwap()); // resolve autosetting
    if (options->glPreferBufferSwap() == Options::AutoSwapStrategy)
        options->setGlPreferBufferSwap('e'); // for unknown drivers - should not happen
    glPlatform->printResults();
    initGL(GlxPlatformInterface);

    // Check whether certain features are supported
    m_haveMESACopySubBuffer = hasGLExtension(QByteArrayLiteral("GLX_MESA_copy_sub_buffer"));
    m_haveMESASwapControl   = hasGLExtension(QByteArrayLiteral("GLX_MESA_swap_control"));
    m_haveEXTSwapControl    = hasGLExtension(QByteArrayLiteral("GLX_EXT_swap_control"));
    m_haveSGISwapControl    = hasGLExtension(QByteArrayLiteral("GLX_SGI_swap_control"));
    // only enable Intel swap event if env variable is set, see BUG 342582
    m_haveINTELSwapEvent    = hasGLExtension(QByteArrayLiteral("GLX_INTEL_swap_event"))
                                && qgetenv("KWIN_USE_INTEL_SWAP_EVENT") == QByteArrayLiteral("1");

    if (m_haveINTELSwapEvent) {
        m_swapEventFilter = std::make_unique<SwapEventFilter>(window, glxWindow);
        glXSelectEvent(display(), glxWindow, GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK);
    }

    haveSwapInterval = m_haveMESASwapControl || m_haveEXTSwapControl || m_haveSGISwapControl;

    setSupportsBufferAge(false);

    if (hasGLExtension(QByteArrayLiteral("GLX_EXT_buffer_age"))) {
        const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");

        if (useBufferAge != "0")
            setSupportsBufferAge(true);
    }

    setSyncsToVBlank(false);
    setBlocksForRetrace(false);
    haveWaitSync = false;
    gs_tripleBufferNeedsDetection = false;
    m_swapProfiler.init();
    const bool wantSync = options->glPreferBufferSwap() != Options::NoSwapEncourage;
    if (wantSync && glXIsDirect(display(), ctx)) {
        if (haveSwapInterval) { // glXSwapInterval is preferred being more reliable
            setSwapInterval(1);
            setSyncsToVBlank(true);
            const QByteArray tripleBuffer = qgetenv("KWIN_TRIPLE_BUFFER");
            if (!tripleBuffer.isEmpty()) {
                setBlocksForRetrace(qstrcmp(tripleBuffer, "0") == 0);
                gs_tripleBufferUndetected = false;
            }
            gs_tripleBufferNeedsDetection = gs_tripleBufferUndetected;
        } else if (hasGLExtension(QByteArrayLiteral("GLX_SGI_video_sync"))) {
            unsigned int sync;
            if (glXGetVideoSyncSGI(&sync) == 0 && glXWaitVideoSyncSGI(1, 0, &sync) == 0) {
                setSyncsToVBlank(true);
                setBlocksForRetrace(true);
                haveWaitSync = true;
            } else
                qCWarning(KWIN_CORE) << "NO VSYNC! glXSwapInterval is not supported, glXWaitVideoSync is supported but broken";
        } else
            qCWarning(KWIN_CORE) << "NO VSYNC! neither glSwapInterval nor glXWaitVideoSync are supported";
    } else {
        // disable v-sync (if possible)
        setSwapInterval(0);
    }
    if (glPlatform->isVirtualBox()) {
        // VirtualBox does not support glxQueryDrawable
        // this should actually be in kwinglutils_funcs, but QueryDrawable seems not to be provided by an extension
        // and the GLPlatform has not been initialized at the moment when initGLX() is called.
        glXQueryDrawable = NULL;
    }

    setIsDirectRendering(bool(glXIsDirect(display(), ctx)));

    qCDebug(KWIN_CORE) << "Direct rendering:" << isDirectRendering();
}
SceneOpenGL::SceneOpenGL(Workspace* ws)
    : Scene(ws)
    , m_resetModelViewProjectionMatrix(true)
    , init_ok(false)
{
    initGLX();
    // check for FBConfig support
    if (!hasGLExtension("GLX_SGIX_fbconfig") || !glXGetFBConfigAttrib || !glXGetFBConfigs ||
            !glXGetVisualFromFBConfig || !glXCreatePixmap || !glXDestroyPixmap ||
            !glXCreateWindow || !glXDestroyWindow) {
        kError(1212) << "GLX_SGIX_fbconfig or required GLX functions missing";
        return; // error
    }
    if (!selectMode())
        return; // error
    if (!initBuffer())  // create destination buffer
        return; // error
    if (!initRenderingContext())
        return; // error
    // Initialize OpenGL
    GLPlatform *glPlatform = GLPlatform::instance();
    glPlatform->detect();
    glPlatform->printResults();
    initGL();

    if (glPlatform->isSoftwareEmulation()) {
        kError(1212) << "OpenGL Software Rasterizer detected. Falling back to XRender.";
        QTimer::singleShot(0, Workspace::self(), SLOT(fallbackToXRenderCompositing()));
        return;
    }
    if (!hasGLExtension("GL_ARB_texture_non_power_of_two")
            && !hasGLExtension("GL_ARB_texture_rectangle")) {
        kError(1212) << "GL_ARB_texture_non_power_of_two and GL_ARB_texture_rectangle missing";
        return; // error
    }
    if (glPlatform->isMesaDriver() && glPlatform->mesaVersion() < kVersionNumber(7, 10)) {
        kError(1212) << "KWin requires at least Mesa 7.10 for OpenGL compositing.";
        return;
    }
    if (db)
        glDrawBuffer(GL_BACK);
    // Check whether certain features are supported
    has_waitSync = false;
    if (options->isGlVSync()) {
        if (glXGetVideoSync && glXSwapInterval && glXIsDirect(display(), ctxbuffer)) {
            unsigned int sync;
            if (glXGetVideoSync(&sync) == 0) {
                if (glXWaitVideoSync(1, 0, &sync) == 0) {
                    // NOTICE at this time we should actually check whether we can successfully
                    // deactivate the swapInterval "glXSwapInterval(0) == 0"
                    // (because we don't actually want it active unless we explicitly run a glXSwapBuffers)
                    // However mesa/dri will return a range error (6) because deactivating the
                    // swapinterval (as of today) seems completely unsupported
                    has_waitSync = true;
                    glXSwapInterval(0);
                }
                else
                    qWarning() << "NO VSYNC! glXWaitVideoSync(1,0,&uint) isn't 0 but" << glXWaitVideoSync(1, 0, &sync);
            } else
                qWarning() << "NO VSYNC! glXGetVideoSync(&uint) isn't 0 but" << glXGetVideoSync(&sync);
        } else
            qWarning() << "NO VSYNC! glXGetVideoSync, glXSwapInterval, glXIsDirect" <<
                        bool(glXGetVideoSync) << bool(glXSwapInterval) << glXIsDirect(display(), ctxbuffer);
    }

    debug = qstrcmp(qgetenv("KWIN_GL_DEBUG"), "1") == 0;

    // scene shader setup
    if (GLPlatform::instance()->supports(GLSL)) {
        if (!ShaderManager::instance()->isValid()) {
            kDebug(1212) << "No Scene Shaders available";
        } else {
            // push one shader on the stack so that one is always bound
            // consistency with GLES
            ShaderManager::instance()->pushShader(ShaderManager::SimpleShader);
        }
    }

    // OpenGL scene setup
    setupModelViewProjectionMatrix();
    if (checkGLError("Init")) {
        kError(1212) << "OpenGL compositing setup failed";
        return; // error
    }

    // set strict binding
    if (options->isGlStrictBindingFollowsDriver()) {
        options->setGlStrictBinding(!glPlatform->supports(LooseBinding));
    }
    kDebug(1212) << "DB:" << db << ", Direct:" << bool(glXIsDirect(display(), ctxbuffer)) << endl;
    init_ok = true;
}