void DisplayList::iterate(OpenGLRenderer& renderer, T& handler, const int level) {
if (CC_UNLIKELY(mDestroyed)) { // temporary debug logging
ALOGW("Error: %s is drawing after destruction, size %d", getName(), mSize);
CRASH();
}
if (mSize == 0 || mAlpha <= 0) {
DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, mName.string());
return;
}
#if DEBUG_DISPLAY_LIST
Rect* clipRect = renderer.getClipRect();
DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), clipRect: %.0f, %.0f, %.0f, %.0f",
level * 2, "", this, mName.string(), clipRect->left, clipRect->top,
clipRect->right, clipRect->bottom);
#endif
int restoreTo = renderer.getSaveCount();
handler(mSaveOp->reinit(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag),
PROPERTY_SAVECOUNT, mClipToBounds);
DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "",
SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo);
setViewProperties<T>(renderer, handler, level + 1);
if (mClipToBounds && renderer.quickRejectNoScissor(0, 0, mWidth, mHeight)) {
DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo);
handler(mRestoreToCountOp->reinit(restoreTo), PROPERTY_SAVECOUNT, mClipToBounds);
renderer.restoreToCount(restoreTo);
renderer.setOverrideLayerAlpha(1.0f);
return;
}
DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance();
int saveCount = renderer.getSaveCount() - 1;
for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) {
DisplayListOp *op = mDisplayListData->displayListOps[i];
#if DEBUG_DISPLAY_LIST
op->output(level + 1);
#endif
logBuffer.writeCommand(level, op->name());
handler(op, saveCount, mClipToBounds);
}
DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo);
handler(mRestoreToCountOp->reinit(restoreTo), PROPERTY_SAVECOUNT, mClipToBounds);
renderer.restoreToCount(restoreTo);
renderer.setOverrideLayerAlpha(1.0f);
}
void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) {
if (mDisplayList->isEmpty()) {
DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", handler.level() * 2, "",
this, getName());
return;
}
#if HWUI_NEW_OPS
const bool drawLayer = false;
#else
const bool drawLayer = (mLayer && (&renderer != mLayer->renderer.get()));
#endif
// If we are updating the contents of mLayer, we don't want to apply any of
// the RenderNode's properties to this issueOperations pass. Those will all
// be applied when the layer is drawn, aka when this is true.
const bool useViewProperties = (!mLayer || drawLayer);
if (useViewProperties) {
const Outline& outline = properties().getOutline();
if (properties().getAlpha() <= 0
|| (outline.getShouldClip() && outline.isEmpty())
|| properties().getScaleX() == 0
|| properties().getScaleY() == 0) {
DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", handler.level() * 2, "",
this, getName());
return;
}
}
handler.startMark(getName());
#if DEBUG_DISPLAY_LIST
const Rect& clipRect = renderer.getLocalClipBounds();
DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f",
handler.level() * 2, "", this, getName(),
clipRect.left, clipRect.top, clipRect.right, clipRect.bottom);
#endif
LinearAllocator& alloc = handler.allocator();
int restoreTo = renderer.getSaveCount();
handler(new (alloc) SaveOp(SaveFlags::MatrixClip),
PROPERTY_SAVECOUNT, properties().getClipToBounds());
DISPLAY_LIST_LOGD("%*sSave %d %d", (handler.level() + 1) * 2, "",
SaveFlags::MatrixClip, restoreTo);
if (useViewProperties) {
setViewProperties<T>(renderer, handler);
}
#if HWUI_NEW_OPS
LOG_ALWAYS_FATAL("legacy op traversal not supported");
#else
bool quickRejected = properties().getClipToBounds()
&& renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight());
if (!quickRejected) {
Matrix4 initialTransform(*(renderer.currentTransform()));
renderer.setBaseTransform(initialTransform);
if (drawLayer) {
handler(new (alloc) DrawLayerOp(mLayer),
renderer.getSaveCount() - 1, properties().getClipToBounds());
} else {
const int saveCountOffset = renderer.getSaveCount() - 1;
const int projectionReceiveIndex = mDisplayList->projectionReceiveIndex;
for (size_t chunkIndex = 0; chunkIndex < mDisplayList->getChunks().size(); chunkIndex++) {
const DisplayList::Chunk& chunk = mDisplayList->getChunks()[chunkIndex];
std::vector<ZDrawRenderNodeOpPair> zTranslatedNodes;
buildZSortedChildList(chunk, zTranslatedNodes);
issueOperationsOf3dChildren(ChildrenSelectMode::NegativeZChildren,
initialTransform, zTranslatedNodes, renderer, handler);
for (size_t opIndex = chunk.beginOpIndex; opIndex < chunk.endOpIndex; opIndex++) {
DisplayListOp *op = mDisplayList->getOps()[opIndex];
#if DEBUG_DISPLAY_LIST
op->output(handler.level() + 1);
#endif
handler(op, saveCountOffset, properties().getClipToBounds());
if (CC_UNLIKELY(!mProjectedNodes.empty() && projectionReceiveIndex >= 0 &&
opIndex == static_cast<size_t>(projectionReceiveIndex))) {
issueOperationsOfProjectedChildren(renderer, handler);
}
}
issueOperationsOf3dChildren(ChildrenSelectMode::PositiveZChildren,
initialTransform, zTranslatedNodes, renderer, handler);
}
}
}
#endif
DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (handler.level() + 1) * 2, "", restoreTo);
handler(new (alloc) RestoreToCountOp(restoreTo),
PROPERTY_SAVECOUNT, properties().getClipToBounds());
DISPLAY_LIST_LOGD("%*sDone (%p, %s)", handler.level() * 2, "", this, getName());
handler.endMark();
}