fb38327e6a
Previously, the geometry nodes modifier was converting the viewer path to a compute context at the same time as it was setting up side effect nodes for the geometry nodes evaluation. Now, this is changed to be a two step process. First, the viewer path is converted to the corresponding compute context. Afterwards, a separate function sets side effect nodes up so that the given node in the given compute context will be evaluated. This has three main benefits: * More obvious separation of concerns. * Can reuse the code that maps a viewer path element to a compute context already. * With gizmo nodes (#112677), it may become necessary to add side effect nodes based on a compute context, but without having a corresponding viewer path.
112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/**
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* This file implements some specific compute contexts for concepts in Blender.
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*/
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#include <optional>
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#include "BLI_compute_context.hh"
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struct bNode;
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namespace blender::bke {
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class ModifierComputeContext : public ComputeContext {
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private:
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static constexpr const char *s_static_type = "MODIFIER";
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/**
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* Use modifier name instead of something like `session_uuid` for now because:
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* - It's more obvious that the name matches between the original and evaluated object.
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* - We might want that the context hash is consistent between sessions in the future.
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*/
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std::string modifier_name_;
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public:
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ModifierComputeContext(const ComputeContext *parent, std::string modifier_name);
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StringRefNull modifier_name() const
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{
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return modifier_name_;
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}
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private:
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void print_current_in_line(std::ostream &stream) const override;
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};
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class NodeGroupComputeContext : public ComputeContext {
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private:
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static constexpr const char *s_static_type = "NODE_GROUP";
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int32_t node_id_;
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#ifdef DEBUG
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std::string debug_node_name_;
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#endif
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public:
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NodeGroupComputeContext(const ComputeContext *parent,
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int32_t node_id,
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const std::optional<ComputeContextHash> &cached_hash = {});
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NodeGroupComputeContext(const ComputeContext *parent, const bNode &node);
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int32_t node_id() const
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{
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return node_id_;
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}
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private:
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void print_current_in_line(std::ostream &stream) const override;
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};
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class SimulationZoneComputeContext : public ComputeContext {
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private:
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static constexpr const char *s_static_type = "SIMULATION_ZONE";
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int32_t output_node_id_;
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public:
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SimulationZoneComputeContext(const ComputeContext *parent, int output_node_id);
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SimulationZoneComputeContext(const ComputeContext *parent, const bNode &node);
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int32_t output_node_id() const
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{
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return output_node_id_;
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}
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private:
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void print_current_in_line(std::ostream &stream) const override;
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};
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class RepeatZoneComputeContext : public ComputeContext {
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private:
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static constexpr const char *s_static_type = "REPEAT_ZONE";
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int32_t output_node_id_;
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int iteration_;
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public:
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RepeatZoneComputeContext(const ComputeContext *parent, int32_t output_node_id, int iteration);
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RepeatZoneComputeContext(const ComputeContext *parent, const bNode &node, int iteration);
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int32_t output_node_id() const
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{
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return output_node_id_;
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}
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int iteration() const
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{
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return iteration_;
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}
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private:
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void print_current_in_line(std::ostream &stream) const override;
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};
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} // namespace blender::bke
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