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Init displays to null layer stack 

When a display is added, initialize it to use an empty layer stack, so
if it is somehow visible it will show black. It will be assigned the
real layer stack -- along with a projection and other properties -- by
window manager soon. Normally a display remains blanked until window
manager has decided what to show on it, but for HDMI connected at boot
that isn't currently the case.

Bug: 7258935
Change-Id: Ic9bb25f7a9b8d9d3772b097ab1d6fa03bc8780a1
This commit is contained in:
Jesse Hall 2013-02-19 16:13:35 -08:00
parent a9a1b006e4
commit 01e29054e6
3 changed files with 14 additions and 8 deletions
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6
services/surfaceflinger/DisplayDevice.cpp
View File

@ -89,7 +89,7 @@ DisplayDevice::DisplayDevice(
mIsSecure(isSecure),
mSecureLayerVisible(false),
mScreenAcquired(false),
mLayerStack(0),
mLayerStack(NO_LAYER_STACK),
mOrientation()
{
init(config);
@ -196,13 +196,13 @@ void DisplayDevice::flip(const Region& dirty) const
EGLDisplay dpy = mDisplay;
EGLSurface surface = mSurface;
#ifdef EGL_ANDROID_swap_rectangle
#ifdef EGL_ANDROID_swap_rectangle
if (mFlags & SWAP_RECTANGLE) {
const Region newDirty(dirty.intersect(bounds()));
const Rect b(newDirty.getBounds());
eglSetSwapRectangleANDROID(dpy, surface,
b.left, b.top, b.width(), b.height());
}
}
#endif
mPageFlipCount++;

6
services/surfaceflinger/DisplayDevice.h
View File

@ -65,6 +65,10 @@ public:
SWAP_RECTANGLE = 0x00080000,
};
enum {
NO_LAYER_STACK = 0xFFFFFFFF,
};
DisplayDevice(
const sp<SurfaceFlinger>& flinger,
DisplayType type,
@ -117,7 +121,7 @@ public:
void swapBuffers(HWComposer& hwc) const;
status_t compositionComplete() const;
// called after h/w composer has completed its set() call
void onSwapBuffersCompleted(HWComposer& hwc) const;

10
services/surfaceflinger/SurfaceFlinger.cpp
View File

@ -1347,7 +1347,7 @@ void SurfaceFlinger::computeVisibleRegions(
// start with the whole surface at its current location
const Layer::State& s(layer->drawingState());
// only consider the layers on the given later stack
// only consider the layers on the given layer stack
if (s.layerStack != layerStack)
continue;
@ -2072,12 +2072,14 @@ status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer)
// ---------------------------------------------------------------------------
void SurfaceFlinger::onInitializeDisplays() {
// reset screen orientation
// reset screen orientation and use primary layer stack
Vector<ComposerState> state;
Vector<DisplayState> displays;
DisplayState d;
d.what = DisplayState::eDisplayProjectionChanged;
d.what = DisplayState::eDisplayProjectionChanged |
DisplayState::eLayerStackChanged;
d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY];
d.layerStack = 0;
d.orientation = DisplayState::eOrientationDefault;
d.frame.makeInvalid();
d.viewport.makeInvalid();
@ -2901,7 +2903,7 @@ SurfaceFlinger::DisplayDeviceState::DisplayDeviceState()
}
SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type)
: type(type), layerStack(0), orientation(0) {
: type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) {
viewport.makeInvalid();
frame.makeInvalid();
}