multi_function_network_evaluation.cc File Reference

#include "FN_multi_function_network_evaluation.hh"
#include "BLI_resource_scope.hh"
#include "BLI_stack.hh"

Go to the source code of this file.

Classes
class	blender::fn::MFNetworkEvaluationStorage
struct	blender::fn::Value
struct	blender::fn::InputSingleValue
struct	blender::fn::InputVectorValue
struct	blender::fn::OutputValue
struct	blender::fn::OutputSingleValue
struct	blender::fn::OutputVectorValue
struct	blender::fn::OwnSingleValue
struct	blender::fn::OwnVectorValue

Namespaces
	blender
	blender::fn

Enumerations
Value Types
enum class	blender::fn::ValueType {   blender::fn::InputSingle , blender::fn::InputVector , blender::fn::OutputSingle , blender::fn::OutputVector ,   blender::fn::OwnSingle , blender::fn::OwnVector }

Detailed Description

The MFNetworkEvaluator class is a multi-function that consists of potentially many smaller multi-functions. When called, it traverses the underlying MFNetwork and executes the required function nodes.

There are many possible approaches to evaluate a function network. The approach implemented below has the following features:

• It does not use recursion. Those could become problematic with long node chains.
• It can handle all existing parameter types (including mutable parameters).
• Avoids data copies in many cases.
• Every node is executed at most once.
• Can compute sub-functions on a single element, when the result is the same for all elements.

Possible improvements:

• Cache and reuse buffers.
• Use "deepest depth first" heuristic to decide which order the inputs of a node should be computed. This reduces the number of required temporary buffers when they are reused.

Definition in file multi_function_network_evaluation.cc.