e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
35 lines
1.0 KiB
C++
35 lines
1.0 KiB
C++
/* SPDX-FileCopyrightText: 2021 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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#include "COM_NodeOperation.h"
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namespace blender::compositor {
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/* TODO(manzanilla): After removing tiled implementation, implement a default #determine_resolution
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* for all constant operations and make all initialization and deinitilization methods final. */
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/**
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* Base class for operations that are always constant. Operations that can be constant only when
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* all their inputs are so, are evaluated into primitive constants (Color/Vector/Value) during
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* constant folding.
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*/
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class ConstantOperation : public NodeOperation {
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protected:
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bool needs_canvas_to_get_constant_;
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public:
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ConstantOperation();
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/** May require resolution to be already determined. */
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virtual const float *get_constant_elem() = 0;
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bool can_get_constant_elem() const;
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void update_memory_buffer(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs) final;
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};
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} // namespace blender::compositor
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