diff options
Diffstat (limited to 'src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp')
| -rw-r--r-- | src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp | 201 |
1 files changed, 81 insertions, 120 deletions
diff --git a/src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp b/src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp index cb453d7..1dec9ea 100644 --- a/src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp +++ b/src/plugins/gfxdrivers/powervr/pvreglscreen/pvreglscreen.cpp @@ -44,33 +44,42 @@ #include "pvrqwsdrawable_p.h" #include <QRegExp> #include <qwindowsystem_qws.h> +#ifndef QT_NO_QWS_TRANSFORMED +#include <qscreentransformed_qws.h> +#endif #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/kd.h> #include <fcntl.h> #include <unistd.h> +//![0] PvrEglScreen::PvrEglScreen(int displayId) : QGLScreen(displayId) { setOptions(NativeWindows); setSupportsBlitInClients(true); setSurfaceFunctions(new PvrEglScreenSurfaceFunctions(this, displayId)); +//![0] fd = -1; ttyfd = -1; doGraphicsMode = true; oldKdMode = KD_TEXT; - if (QWSServer::instance()) - holder = new PvrEglSurfaceHolder(); - else - holder = 0; + parent = 0; + + // Make sure that the EGL layer is initialized and the drivers loaded. + EGLDisplay dpy = eglGetDisplay((EGLNativeDisplayType)EGL_DEFAULT_DISPLAY); + if (!eglInitialize(dpy, 0, 0)) + qWarning("Could not initialize EGL display - are the drivers loaded?"); + + // Make sure that screen 0 is initialized. + pvrQwsScreenWindow(0); } PvrEglScreen::~PvrEglScreen() { if (fd >= 0) ::close(fd); - delete holder; } bool PvrEglScreen::initDevice() @@ -183,10 +192,11 @@ bool PvrEglScreen::hasOpenGL() return true; } +//![1] QWSWindowSurface* PvrEglScreen::createSurface(QWidget *widget) const { if (qobject_cast<QGLWidget*>(widget)) - return new PvrEglWindowSurface(widget, (QScreen *)this, displayId); + return new PvrEglWindowSurface(widget, (PvrEglScreen *)this, displayId); return QScreen::createSurface(widget); } @@ -194,10 +204,72 @@ QWSWindowSurface* PvrEglScreen::createSurface(QWidget *widget) const QWSWindowSurface* PvrEglScreen::createSurface(const QString &key) const { if (key == QLatin1String("PvrEgl")) - return new PvrEglWindowSurface(holder); + return new PvrEglWindowSurface(); return QScreen::createSurface(key); } +//![1] + +#ifndef QT_NO_QWS_TRANSFORMED + +static const QScreen *parentScreen + (const QScreen *current, const QScreen *lookingFor) +{ + if (!current) + return 0; + switch (current->classId()) { + case QScreen::ProxyClass: + case QScreen::TransformedClass: { + const QScreen *child = + static_cast<const QProxyScreen *>(current)->screen(); + if (child == lookingFor) + return current; + else + return parentScreen(child, lookingFor); + } + // Not reached. + + case QScreen::MultiClass: { + QList<QScreen *> screens = current->subScreens(); + foreach (QScreen *screen, screens) { + if (screen == lookingFor) + return current; + const QScreen *parent = parentScreen(screen, lookingFor); + if (parent) + return parent; + } + } + break; + + default: break; + } + return 0; +} + +int PvrEglScreen::transformation() const +{ + // We need to search for our parent screen, which is assumed to be + // "Transformed". If it isn't, then there is no transformation. + // There is no direct method to get the parent screen so we need + // to search every screen until we find ourselves. + if (!parent && qt_screen != this) + parent = parentScreen(qt_screen, this); + if (!parent) + return 0; + if (parent->classId() != QScreen::TransformedClass) + return 0; + return 90 * static_cast<const QTransformedScreen *>(parent) + ->transformation(); +} + +#else + +int PvrEglScreen::transformation() const +{ + return 0; +} + +#endif void PvrEglScreen::sync() { @@ -253,8 +325,10 @@ void PvrEglScreen::closeTty() ttyfd = -1; } +//![2] bool PvrEglScreenSurfaceFunctions::createNativeWindow(QWidget *widget, EGLNativeWindowType *native) { +//![2] QWSWindowSurface *surface = static_cast<QWSWindowSurface *>(widget->windowSurface()); if (!surface) { @@ -275,116 +349,3 @@ bool PvrEglScreenSurfaceFunctions::createNativeWindow(QWidget *widget, EGLNative *native = (EGLNativeWindowType)(nsurface->nativeDrawable()); return true; } - -// The PowerVR engine on the device needs to allocate about 2Mb of -// contiguous physical memory to manage drawing into a surface. -// -// The problem is that once Qtopia begins its startup sequence, -// it allocates enough memory to severely fragment the physical -// address space on the device. This leaves the PowerVR engine -// unable to allocate the necessary contiguous physical memory -// when an EGL surface is created. -// -// A solution to this is to pre-allocate a dummy surface early -// in the startup sequence before memory becomes fragmented, -// reserving it for any future EGL applications to use. -// -// However, the PowerVR engine has problems managing multiple -// surfaces concurrently, and so real EGL applications end up -// with unacceptably slow frame rates unless the dummy surface -// is destroyed while the real EGL applications are running. -// -// In summary, we need to try to ensure that there is always at -// least one EGL surface active at any given time to reserve the -// memory but destroy the temporary surface when a real surface -// is using the device. That is the purpose of PvrEglSurfaceHolder. - -PvrEglSurfaceHolder::PvrEglSurfaceHolder(QObject *parent) - : QObject(parent) -{ - numRealSurfaces = 0; - - PvrQwsRect rect; - rect.x = 0; - rect.y = 0; - rect.width = 16; - rect.height = 16; - tempSurface = pvrQwsCreateWindow(0, -1, &rect); - - dpy = EGL_NO_DISPLAY; - config = 0; - surface = EGL_NO_SURFACE; - - dpy = eglGetDisplay((EGLNativeDisplayType)EGL_DEFAULT_DISPLAY); - if (!eglInitialize(dpy, 0, 0)) { - qWarning("Could not initialize EGL display - are the drivers loaded?"); - dpy = EGL_NO_DISPLAY; - return; - } - - EGLint attribList[16]; - int temp = 0; - attribList[temp++] = EGL_LEVEL; // Framebuffer level 0 - attribList[temp++] = 0; - attribList[temp++] = EGL_SURFACE_TYPE; - attribList[temp++] = EGL_WINDOW_BIT; - attribList[temp++] = EGL_NONE; - - EGLint numConfigs = 0; - if (!eglChooseConfig(dpy, attribList, &config, 1, &numConfigs) || numConfigs != 1) { - qWarning("Could not find a matching a EGL configuration"); - eglTerminate(dpy); - dpy = EGL_NO_DISPLAY; - return; - } - - surface = eglCreateWindowSurface - (dpy, config, (EGLNativeWindowType)(-1), NULL); - if (surface == EGL_NO_SURFACE) - qWarning("Could not create the temporary EGL surface"); -} - -PvrEglSurfaceHolder::~PvrEglSurfaceHolder() -{ - if (surface != EGL_NO_SURFACE) - eglDestroySurface(dpy, surface); - if (dpy != EGL_NO_DISPLAY) - eglTerminate(dpy); - if (tempSurface) - pvrQwsDestroyDrawable(tempSurface); -} - -// Add a real EGL surface to the system. -void PvrEglSurfaceHolder::addSurface() -{ - ++numRealSurfaces; - if (numRealSurfaces == 1) { - // Destroy the temporary surface while some other application - // is making use of the EGL sub-system for 3D rendering. - if (surface != EGL_NO_SURFACE) { - eglDestroySurface(dpy, surface); - surface = EGL_NO_SURFACE; - } - } -} - -// Remove an actual EGL surface from the system. -void PvrEglSurfaceHolder::removeSurface() -{ - if (numRealSurfaces > 0) { - --numRealSurfaces; - if (numRealSurfaces == 0) { - // The last real EGL surface has been destroyed, so re-create - // the temporary surface. There is a race condition here in - // that Qtopia could allocate a lot of memory just after - // the real EGL surface is destroyed but before we could - // create the temporary surface again. - if (surface == EGL_NO_SURFACE && dpy != EGL_NO_DISPLAY) { - surface = eglCreateWindowSurface - (dpy, config, (EGLNativeWindowType)(-1), NULL); - if (surface == EGL_NO_SURFACE) - qWarning("Could not re-create the temporary EGL surface"); - } - } - } -} |