CFTimeInterval LegacyCACFLayerTreeHost::lastCommitTime() const
{
return wkCACFContextGetLastCommitTime(m_context);
}
void WKCACFLayerRenderer::render(const Vector<CGRect>& windowDirtyRects)
{
ASSERT(m_d3dDevice);
if (m_mustResetLostDeviceBeforeRendering && !resetDevice(LostDevice)) {
// We can't reset the device right now. Try again soon.
renderSoon();
return;
}
if (m_client && !m_client->shouldRender()) {
renderSoon();
return;
}
// Sync the layer if needed
if (m_syncLayerChanges) {
m_client->syncCompositingState();
m_syncLayerChanges = false;
}
// Flush the root layer to the render tree.
wkCACFContextFlush(m_context);
// All pending animations will have been started with the flush. Fire the animationStarted calls
double currentTime = WTF::currentTime();
double currentMediaTime = CACurrentMediaTime();
double t = currentTime + wkCACFContextGetLastCommitTime(m_context) - currentMediaTime;
ASSERT(t <= currentTime);
HashSet<RefPtr<PlatformCALayer> >::iterator end = m_pendingAnimatedLayers.end();
for (HashSet<RefPtr<PlatformCALayer> >::iterator it = m_pendingAnimatedLayers.begin(); it != end; ++it) {
PlatformCALayerClient* owner = (*it)->owner();
owner->platformCALayerAnimationStarted(t);
}
m_pendingAnimatedLayers.clear();
CGRect bounds = this->bounds();
// Give the renderer some space to use. This needs to be valid until the
// wkCACFContextFinishUpdate() call below.
char space[4096];
if (!wkCACFContextBeginUpdate(m_context, space, sizeof(space), currentMediaTime, bounds, windowDirtyRects.data(), windowDirtyRects.size()))
return;
HRESULT err = S_OK;
CFTimeInterval timeToNextRender = numeric_limits<CFTimeInterval>::infinity();
do {
// FIXME: don't need to clear dirty region if layer tree is opaque.
WKCACFUpdateRectEnumerator* e = wkCACFContextCopyUpdateRectEnumerator(m_context);
if (!e)
break;
Vector<D3DRECT, 64> rects;
for (const CGRect* r = wkCACFUpdateRectEnumeratorNextRect(e); r; r = wkCACFUpdateRectEnumeratorNextRect(e)) {
D3DRECT rect;
rect.x1 = r->origin.x;
rect.x2 = rect.x1 + r->size.width;
rect.y1 = bounds.origin.y + bounds.size.height - (r->origin.y + r->size.height);
rect.y2 = rect.y1 + r->size.height;
rects.append(rect);
}
wkCACFUpdateRectEnumeratorRelease(e);
timeToNextRender = wkCACFContextGetNextUpdateTime(m_context);
if (rects.isEmpty())
break;
m_d3dDevice->Clear(rects.size(), rects.data(), D3DCLEAR_TARGET, 0, 1.0f, 0);
m_d3dDevice->BeginScene();
wkCACFContextRenderUpdate(m_context);
m_d3dDevice->EndScene();
err = m_d3dDevice->Present(0, 0, 0, 0);
if (err == D3DERR_DEVICELOST) {
wkCACFContextAddUpdateRect(m_context, bounds);
if (!resetDevice(LostDevice)) {
// We can't reset the device right now. Try again soon.
renderSoon();
return;
}
}
} while (err == D3DERR_DEVICELOST);
wkCACFContextFinishUpdate(m_context);
#ifndef NDEBUG
if (m_printTree)
m_rootLayer->printTree();
#endif
// If timeToNextRender is not infinity, it means animations are running, so queue up to render again
if (timeToNextRender != numeric_limits<CFTimeInterval>::infinity())
renderSoon();
}