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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2013 Blender Foundation. */
#pragma once
#include "BLI_map.hh"
#include "BLI_vector.hh"
#include "COM_NodeGraph.h"
namespace blender::compositor {
class CompositorContext;
class Node;
class NodeInput;
class NodeOutput;
class ExecutionSystem;
class ExecutionGroup;
class NodeOperation;
class NodeOperationInput;
class NodeOperationOutput;
class PreviewOperation;
class WriteBufferOperation;
class ViewerOperation;
class ConstantOperation;
class NodeOperationBuilder {
public:
class Link {
private:
NodeOperationOutput *from_;
NodeOperationInput *to_;
public:
Link(NodeOperationOutput *from, NodeOperationInput *to) : from_(from), to_(to)
{
}
NodeOperationOutput *from() const
{
return from_;
}
NodeOperationInput *to() const
{
return to_;
}
};
private:
const CompositorContext *context_;
NodeGraph graph_;
ExecutionSystem *exec_system_;
Vector<NodeOperation *> operations_;
Vector<Link> links_;
Vector<ExecutionGroup *> groups_;
/** Maps operation inputs to node inputs */
Map<NodeOperationInput *, NodeInput *> input_map_;
/** Maps node outputs to operation outputs */
Map<NodeOutput *, NodeOperationOutput *> output_map_;
Node *current_node_;
/** Operation that will be writing to the viewer image
* Only one operation can occupy this place at a time,
* to avoid race conditions
*/
ViewerOperation *active_viewer_;
public:
NodeOperationBuilder(const CompositorContext *context,
bNodeTree *b_nodetree,
ExecutionSystem *system);
const CompositorContext &context() const
{
return *context_;
}
void convert_to_operations(ExecutionSystem *system);
void add_operation(NodeOperation *operation);
void replace_operation_with_constant(NodeOperation *operation,
ConstantOperation *constant_operation);
/** Map input socket of the current node to an operation socket */
void map_input_socket(NodeInput *node_socket, NodeOperationInput *operation_socket);
/** Map output socket of the current node to an operation socket */
void map_output_socket(NodeOutput *node_socket, NodeOperationOutput *operation_socket);
void add_link(NodeOperationOutput *from, NodeOperationInput *to);
void remove_input_link(NodeOperationInput *to);
/** Add a preview operation for a operation output */
void add_preview(NodeOperationOutput *output);
/** Add a preview operation for a node input */
void add_node_input_preview(NodeInput *input);
/** Define a viewer operation as the active output, if possible */
void register_viewer(ViewerOperation *viewer);
/** The currently active viewer output operation */
ViewerOperation *active_viewer() const
{
return active_viewer_;
}
const Vector<NodeOperation *> &get_operations() const
{
return operations_;
}
const Vector<Link> &get_links() const
{
return links_;
}
protected:
/** Add datatype conversion where needed */
void add_datatype_conversions();
/** Construct a constant value operation for every unconnected input */
void add_operation_input_constants();
void add_input_constant_value(NodeOperationInput *input, const NodeInput *node_input);
/** Replace proxy operations with direct links */
void resolve_proxies();
/** Calculate canvas area for each operation. */
void determine_canvases();
/** Helper function to store connected inputs for replacement */
Vector<NodeOperationInput *> cache_output_links(NodeOperationOutput *output) const;
/** Find a connected write buffer operation to an OpOutput */
WriteBufferOperation *find_attached_write_buffer_operation(NodeOperationOutput *output) const;
/** Add read/write buffer operations around complex operations */
void add_complex_operation_buffers();
void add_input_buffers(NodeOperation *operation, NodeOperationInput *input);
void add_output_buffers(NodeOperation *operation, NodeOperationOutput *output);
/** Remove unreachable operations */
void prune_operations();
/** Sort operations by link dependencies */
void sort_operations();
/** Create execution groups */
void group_operations();
ExecutionGroup *make_group(NodeOperation *op);
private:
PreviewOperation *make_preview_operation() const;
void unlink_inputs_and_relink_outputs(NodeOperation *unlinked_op, NodeOperation *linked_op);
/** Merge operations with same type, inputs and parameters that produce the same result. */
void merge_equal_operations();
void merge_equal_operations(NodeOperation *from, NodeOperation *into);
void save_graphviz(StringRefNull name = "");
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("COM:NodeCompilerImpl")
#endif
};
/** Create a graphviz representation of the NodeOperationBuilder. */
std::ostream &operator<<(std::ostream &os, const NodeOperationBuilder &builder);
std::ostream &operator<<(std::ostream &os, const NodeOperationBuilder::Link &link);
} // namespace blender::compositor
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