bool
HwcComposer2D::TryRenderWithHwc(Layer* aRoot,
nsIWidget* aWidget,
bool aGeometryChanged)
{
if (!mHal->HasHwc()) {
return false;
}
nsScreenGonk* screen = static_cast<nsWindow*>(aWidget)->GetScreen();
if (mList) {
mList->flags = mHal->GetGeometryChangedFlag(aGeometryChanged);
mList->numHwLayers = 0;
mHwcLayerMap.Clear();
}
if (mPrepared) {
mHal->ResetHwc();
mPrepared = false;
}
// XXX: The clear() below means all rect vectors will be have to be
// reallocated. We may want to avoid this if possible
mVisibleRegions.clear();
mScreenRect = screen->GetNaturalBounds();
MOZ_ASSERT(mHwcLayerMap.IsEmpty());
if (!PrepareLayerList(aRoot,
mScreenRect,
gfx::Matrix()))
{
mHwcLayerMap.Clear();
LOGD("Render aborted. Nothing was drawn to the screen");
return false;
}
// Send data to LayerScope for debugging
SendtoLayerScope();
if (!TryHwComposition(screen)) {
LOGD("Full HWC Composition failed. Fallback to GPU Composition or partial OVERLAY Composition");
LayerScope::CleanLayer();
return false;
}
LOGD("Frame rendered");
return true;
}
bool
HwcComposer2D::TryRender(Layer* aRoot,
bool aGeometryChanged)
{
MOZ_ASSERT(Initialized());
if (mList) {
setHwcGeometry(aGeometryChanged);
mList->numHwLayers = 0;
mHwcLayerMap.Clear();
}
if (mPrepared) {
Reset();
}
// XXX: The clear() below means all rect vectors will be have to be
// reallocated. We may want to avoid this if possible
mVisibleRegions.clear();
MOZ_ASSERT(mHwcLayerMap.IsEmpty());
if (!PrepareLayerList(aRoot,
mScreenRect,
gfx::Matrix()))
{
mHwcLayerMap.Clear();
LOGD("Render aborted. Nothing was drawn to the screen");
return false;
}
// Send data to LayerScope for debugging
SendtoLayerScope();
if (!TryHwComposition()) {
LOGD("H/W Composition failed");
LayerScope::CleanLayer();
return false;
}
LOGD("Frame rendered");
return true;
}
