433 lines
16 KiB
C++
433 lines
16 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BKE_node.h"
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#include "BKE_node_runtime.hh"
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#include "DNA_node_types.h"
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#include "BLI_function_ref.hh"
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#include "BLI_stack.hh"
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#include "BLI_task.hh"
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#include "BLI_timeit.hh"
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#include "NOD_geometry_nodes_lazy_function.hh"
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namespace blender::bke::node_tree_runtime {
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void preprocess_geometry_node_tree_for_evaluation(bNodeTree &tree_cow)
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{
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BLI_assert(tree_cow.type == NTREE_GEOMETRY);
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/* Rebuild geometry nodes lazy function graph. */
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tree_cow.runtime->geometry_nodes_lazy_function_graph_info.reset();
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blender::nodes::ensure_geometry_nodes_lazy_function_graph(tree_cow);
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}
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static void double_checked_lock(std::mutex &mutex, bool &data_is_dirty, FunctionRef<void()> fn)
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{
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if (!data_is_dirty) {
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return;
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}
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std::lock_guard lock{mutex};
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if (!data_is_dirty) {
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return;
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}
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fn();
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data_is_dirty = false;
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}
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static void double_checked_lock_with_task_isolation(std::mutex &mutex,
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bool &data_is_dirty,
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FunctionRef<void()> fn)
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{
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double_checked_lock(mutex, data_is_dirty, [&]() { threading::isolate_task(fn); });
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}
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static void update_node_vector(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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tree_runtime.nodes.clear();
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tree_runtime.group_nodes.clear();
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tree_runtime.has_undefined_nodes_or_sockets = false;
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LISTBASE_FOREACH (bNode *, node, &ntree.nodes) {
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node->runtime->index_in_tree = tree_runtime.nodes.append_and_get_index(node);
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node->runtime->owner_tree = const_cast<bNodeTree *>(&ntree);
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tree_runtime.has_undefined_nodes_or_sockets |= node->typeinfo == &NodeTypeUndefined;
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if (node->is_group()) {
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tree_runtime.group_nodes.append(node);
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}
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}
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}
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static void update_link_vector(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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tree_runtime.links.clear();
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LISTBASE_FOREACH (bNodeLink *, link, &ntree.links) {
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tree_runtime.links.append(link);
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}
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}
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static void update_internal_links(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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for (bNode *node : tree_runtime.nodes) {
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node->runtime->internal_links.clear();
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for (bNodeSocket *socket : node->runtime->outputs) {
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socket->runtime->internal_link_input = nullptr;
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}
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LISTBASE_FOREACH (bNodeLink *, link, &node->internal_links) {
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node->runtime->internal_links.append(link);
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link->tosock->runtime->internal_link_input = link->fromsock;
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}
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}
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}
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static void update_socket_vectors_and_owner_node(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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tree_runtime.sockets.clear();
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tree_runtime.input_sockets.clear();
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tree_runtime.output_sockets.clear();
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for (bNode *node : tree_runtime.nodes) {
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bNodeRuntime &node_runtime = *node->runtime;
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node_runtime.inputs.clear();
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node_runtime.outputs.clear();
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LISTBASE_FOREACH (bNodeSocket *, socket, &node->inputs) {
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socket->runtime->index_in_node = node_runtime.inputs.append_and_get_index(socket);
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socket->runtime->index_in_all_sockets = tree_runtime.sockets.append_and_get_index(socket);
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socket->runtime->index_in_inout_sockets = tree_runtime.input_sockets.append_and_get_index(
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socket);
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socket->runtime->owner_node = node;
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tree_runtime.has_undefined_nodes_or_sockets |= socket->typeinfo == &NodeSocketTypeUndefined;
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}
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LISTBASE_FOREACH (bNodeSocket *, socket, &node->outputs) {
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socket->runtime->index_in_node = node_runtime.outputs.append_and_get_index(socket);
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socket->runtime->index_in_all_sockets = tree_runtime.sockets.append_and_get_index(socket);
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socket->runtime->index_in_inout_sockets = tree_runtime.output_sockets.append_and_get_index(
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socket);
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socket->runtime->owner_node = node;
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tree_runtime.has_undefined_nodes_or_sockets |= socket->typeinfo == &NodeSocketTypeUndefined;
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}
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}
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}
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static void update_directly_linked_links_and_sockets(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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for (bNode *node : tree_runtime.nodes) {
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for (bNodeSocket *socket : node->runtime->inputs) {
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socket->runtime->directly_linked_links.clear();
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socket->runtime->directly_linked_sockets.clear();
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}
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for (bNodeSocket *socket : node->runtime->outputs) {
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socket->runtime->directly_linked_links.clear();
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socket->runtime->directly_linked_sockets.clear();
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}
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node->runtime->has_available_linked_inputs = false;
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node->runtime->has_available_linked_outputs = false;
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}
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for (bNodeLink *link : tree_runtime.links) {
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link->fromsock->runtime->directly_linked_links.append(link);
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link->fromsock->runtime->directly_linked_sockets.append(link->tosock);
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link->tosock->runtime->directly_linked_links.append(link);
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if (link->is_available()) {
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link->fromnode->runtime->has_available_linked_outputs = true;
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link->tonode->runtime->has_available_linked_inputs = true;
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}
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}
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for (bNodeSocket *socket : tree_runtime.input_sockets) {
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if (socket->flag & SOCK_MULTI_INPUT) {
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std::sort(socket->runtime->directly_linked_links.begin(),
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socket->runtime->directly_linked_links.end(),
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[&](const bNodeLink *a, const bNodeLink *b) {
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return a->multi_input_socket_index > b->multi_input_socket_index;
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});
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}
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}
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for (bNodeSocket *socket : tree_runtime.input_sockets) {
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for (bNodeLink *link : socket->runtime->directly_linked_links) {
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/* Do this after sorting the input links. */
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socket->runtime->directly_linked_sockets.append(link->fromsock);
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}
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}
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}
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static void find_logical_origins_for_socket_recursive(
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bNodeSocket &input_socket,
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bool only_follow_first_input_link,
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Vector<bNodeSocket *, 16> &sockets_in_current_chain,
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Vector<bNodeSocket *> &r_logical_origins,
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Vector<bNodeSocket *> &r_skipped_origins)
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{
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if (sockets_in_current_chain.contains(&input_socket)) {
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/* Protect against reroute recursions. */
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return;
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}
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sockets_in_current_chain.append(&input_socket);
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Span<bNodeLink *> links_to_check = input_socket.runtime->directly_linked_links;
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if (only_follow_first_input_link) {
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links_to_check = links_to_check.take_front(1);
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}
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for (bNodeLink *link : links_to_check) {
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if (link->is_muted()) {
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continue;
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}
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if (!link->is_available()) {
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continue;
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}
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bNodeSocket &origin_socket = *link->fromsock;
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bNode &origin_node = *link->fromnode;
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if (!origin_socket.is_available()) {
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/* Non available sockets are ignored. */
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continue;
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}
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if (origin_node.type == NODE_REROUTE) {
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bNodeSocket &reroute_input = *origin_node.runtime->inputs[0];
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bNodeSocket &reroute_output = *origin_node.runtime->outputs[0];
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r_skipped_origins.append(&reroute_input);
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r_skipped_origins.append(&reroute_output);
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find_logical_origins_for_socket_recursive(
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reroute_input, false, sockets_in_current_chain, r_logical_origins, r_skipped_origins);
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continue;
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}
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if (origin_node.is_muted()) {
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if (bNodeSocket *mute_input = origin_socket.runtime->internal_link_input) {
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r_skipped_origins.append(&origin_socket);
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r_skipped_origins.append(mute_input);
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find_logical_origins_for_socket_recursive(
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*mute_input, true, sockets_in_current_chain, r_logical_origins, r_skipped_origins);
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}
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continue;
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}
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r_logical_origins.append(&origin_socket);
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}
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sockets_in_current_chain.pop_last();
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}
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static void update_logical_origins(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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threading::parallel_for(tree_runtime.nodes.index_range(), 128, [&](const IndexRange range) {
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for (const int i : range) {
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bNode &node = *tree_runtime.nodes[i];
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for (bNodeSocket *socket : node.runtime->inputs) {
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Vector<bNodeSocket *, 16> sockets_in_current_chain;
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socket->runtime->logically_linked_sockets.clear();
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socket->runtime->logically_linked_skipped_sockets.clear();
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find_logical_origins_for_socket_recursive(
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*socket,
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false,
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sockets_in_current_chain,
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socket->runtime->logically_linked_sockets,
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socket->runtime->logically_linked_skipped_sockets);
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}
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}
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});
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}
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static void update_nodes_by_type(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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tree_runtime.nodes_by_type.clear();
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for (bNode *node : tree_runtime.nodes) {
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tree_runtime.nodes_by_type.add(node->typeinfo, node);
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}
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}
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static void update_sockets_by_identifier(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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threading::parallel_for(tree_runtime.nodes.index_range(), 128, [&](const IndexRange range) {
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for (bNode *node : tree_runtime.nodes.as_span().slice(range)) {
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node->runtime->inputs_by_identifier.clear();
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node->runtime->outputs_by_identifier.clear();
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for (bNodeSocket *socket : node->runtime->inputs) {
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node->runtime->inputs_by_identifier.add_new(socket->identifier, socket);
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}
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for (bNodeSocket *socket : node->runtime->outputs) {
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node->runtime->outputs_by_identifier.add_new(socket->identifier, socket);
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}
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}
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});
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}
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enum class ToposortDirection {
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LeftToRight,
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RightToLeft,
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};
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struct ToposortNodeState {
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bool is_done = false;
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bool is_in_stack = false;
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};
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static void toposort_from_start_node(const ToposortDirection direction,
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bNode &start_node,
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MutableSpan<ToposortNodeState> node_states,
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Vector<bNode *> &r_sorted_nodes,
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bool &r_cycle_detected)
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{
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struct Item {
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bNode *node;
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int socket_index = 0;
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int link_index = 0;
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};
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Stack<Item, 64> nodes_to_check;
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nodes_to_check.push({&start_node});
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node_states[start_node.runtime->index_in_tree].is_in_stack = true;
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while (!nodes_to_check.is_empty()) {
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Item &item = nodes_to_check.peek();
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bNode &node = *item.node;
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const Span<bNodeSocket *> sockets = (direction == ToposortDirection::LeftToRight) ?
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node.runtime->inputs :
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node.runtime->outputs;
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while (true) {
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if (item.socket_index == sockets.size()) {
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/* All sockets have already been visited. */
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break;
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}
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bNodeSocket &socket = *sockets[item.socket_index];
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const Span<bNodeLink *> linked_links = socket.runtime->directly_linked_links;
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if (item.link_index == linked_links.size()) {
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/* All links connected to this socket have already been visited. */
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item.socket_index++;
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item.link_index = 0;
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continue;
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}
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bNodeLink &link = *linked_links[item.link_index];
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if (!link.is_available()) {
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/* Ignore unavailable links. */
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item.link_index++;
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continue;
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}
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bNodeSocket &linked_socket = *socket.runtime->directly_linked_sockets[item.link_index];
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bNode &linked_node = *linked_socket.runtime->owner_node;
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ToposortNodeState &linked_node_state = node_states[linked_node.runtime->index_in_tree];
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if (linked_node_state.is_done) {
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/* The linked node has already been visited. */
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item.link_index++;
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continue;
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}
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if (linked_node_state.is_in_stack) {
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r_cycle_detected = true;
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}
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else {
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nodes_to_check.push({&linked_node});
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linked_node_state.is_in_stack = true;
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}
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break;
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}
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/* If no other element has been pushed, the current node can be pushed to the sorted list. */
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if (&item == &nodes_to_check.peek()) {
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ToposortNodeState &node_state = node_states[node.runtime->index_in_tree];
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node_state.is_done = true;
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node_state.is_in_stack = false;
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r_sorted_nodes.append(&node);
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nodes_to_check.pop();
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}
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}
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}
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static void update_toposort(const bNodeTree &ntree,
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const ToposortDirection direction,
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Vector<bNode *> &r_sorted_nodes,
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bool &r_cycle_detected)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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r_sorted_nodes.clear();
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r_sorted_nodes.reserve(tree_runtime.nodes.size());
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r_cycle_detected = false;
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Array<ToposortNodeState> node_states(tree_runtime.nodes.size());
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for (bNode *node : tree_runtime.nodes) {
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if (node_states[node->runtime->index_in_tree].is_done) {
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/* Ignore nodes that are done already. */
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continue;
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}
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if ((direction == ToposortDirection::LeftToRight) ?
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node->runtime->has_available_linked_outputs :
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node->runtime->has_available_linked_inputs) {
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/* Ignore non-start nodes. */
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continue;
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}
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toposort_from_start_node(direction, *node, node_states, r_sorted_nodes, r_cycle_detected);
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}
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if (r_sorted_nodes.size() < tree_runtime.nodes.size()) {
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r_cycle_detected = true;
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for (bNode *node : tree_runtime.nodes) {
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if (node_states[node->runtime->index_in_tree].is_done) {
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/* Ignore nodes that are done already. */
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continue;
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}
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/* Start toposort at this node which is somewhere in the middle of a loop. */
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toposort_from_start_node(direction, *node, node_states, r_sorted_nodes, r_cycle_detected);
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}
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}
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BLI_assert(tree_runtime.nodes.size() == r_sorted_nodes.size());
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}
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static void update_group_output_node(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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const bNodeType *node_type = nodeTypeFind("NodeGroupOutput");
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const Span<bNode *> group_output_nodes = tree_runtime.nodes_by_type.lookup(node_type);
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if (group_output_nodes.is_empty()) {
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tree_runtime.group_output_node = nullptr;
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}
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else if (group_output_nodes.size() == 1) {
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tree_runtime.group_output_node = group_output_nodes[0];
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}
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else {
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for (bNode *group_output : group_output_nodes) {
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if (group_output->flag & NODE_DO_OUTPUT) {
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tree_runtime.group_output_node = group_output;
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break;
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}
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}
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}
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}
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static void ensure_topology_cache(const bNodeTree &ntree)
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{
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bNodeTreeRuntime &tree_runtime = *ntree.runtime;
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double_checked_lock_with_task_isolation(
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tree_runtime.topology_cache_mutex, tree_runtime.topology_cache_is_dirty, [&]() {
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update_node_vector(ntree);
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update_link_vector(ntree);
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update_socket_vectors_and_owner_node(ntree);
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update_internal_links(ntree);
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update_directly_linked_links_and_sockets(ntree);
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threading::parallel_invoke([&]() { update_logical_origins(ntree); },
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[&]() { update_nodes_by_type(ntree); },
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[&]() { update_sockets_by_identifier(ntree); },
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[&]() {
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update_toposort(ntree,
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ToposortDirection::LeftToRight,
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tree_runtime.toposort_left_to_right,
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tree_runtime.has_available_link_cycle);
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},
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[&]() {
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bool dummy;
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update_toposort(ntree,
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ToposortDirection::RightToLeft,
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tree_runtime.toposort_right_to_left,
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dummy);
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});
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update_group_output_node(ntree);
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tree_runtime.topology_cache_exists = true;
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});
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}
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} // namespace blender::bke::node_tree_runtime
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void bNodeTree::ensure_topology_cache() const
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{
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blender::bke::node_tree_runtime::ensure_topology_cache(*this);
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}
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