Manuel Castilla
d7c812f15b
In order to reduce stack size this patch converts full frame recursive methods into iterative. - No functional changes. - No performance changes. - Memory peak may slightly vary depending on the tree because now breadth-first traversal is used instead of depth-first. Tests in D11113 have same results except for test1 memory peak: 360MBs instead of 329.50MBs. Reviewed By: Jeroen Bakker (jbakker) Differential Revision: https://developer.blender.org/D11515
130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2021, Blender Foundation.
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*/
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#include "COM_SharedOperationBuffers.h"
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#include "BLI_rect.h"
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#include "COM_NodeOperation.h"
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namespace blender::compositor {
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SharedOperationBuffers::BufferData::BufferData()
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: buffer(nullptr), registered_reads(0), received_reads(0), is_rendered(false)
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{
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}
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SharedOperationBuffers::BufferData &SharedOperationBuffers::get_buffer_data(NodeOperation *op)
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{
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return buffers_.lookup_or_add_cb(op, []() { return BufferData(); });
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}
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/**
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* Whether given operation area to render is already registered.
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* TODO: Possibly refactor to "request_area". Current implementation is incomplete: partial
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* overlapping, etc. Leading to more rendering than necessary.
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*/
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bool SharedOperationBuffers::is_area_registered(NodeOperation *op, const rcti &area_to_render)
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{
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BufferData &buf_data = get_buffer_data(op);
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for (rcti ®_rect : buf_data.render_areas) {
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if (BLI_rcti_inside_rcti(®_rect, &area_to_render)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Registers an operation area to render.
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*/
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void SharedOperationBuffers::register_area(NodeOperation *op, const rcti &area_to_render)
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{
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get_buffer_data(op).render_areas.append(area_to_render);
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}
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/**
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* Whether given operation has any registered reads (other operation registered it depends on given
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* operation).
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*/
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bool SharedOperationBuffers::has_registered_reads(NodeOperation *op)
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{
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return get_buffer_data(op).registered_reads > 0;
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}
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/**
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* Registers an operation read (other operation depends on given operation).
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*/
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void SharedOperationBuffers::register_read(NodeOperation *read_op)
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{
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get_buffer_data(read_op).registered_reads++;
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}
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/**
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* Get registered areas given operation needs to render.
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*/
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blender::Span<rcti> SharedOperationBuffers::get_areas_to_render(NodeOperation *op)
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{
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return get_buffer_data(op).render_areas.as_span();
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}
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/**
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* Whether this operation buffer has already been rendered.
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*/
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bool SharedOperationBuffers::is_operation_rendered(NodeOperation *op)
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{
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return get_buffer_data(op).is_rendered;
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}
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/**
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* Stores given operation rendered buffer.
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*/
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void SharedOperationBuffers::set_rendered_buffer(NodeOperation *op,
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std::unique_ptr<MemoryBuffer> buffer)
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{
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BufferData &buf_data = get_buffer_data(op);
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BLI_assert(buf_data.received_reads == 0);
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BLI_assert(buf_data.buffer == nullptr);
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buf_data.buffer = std::move(buffer);
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buf_data.is_rendered = true;
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}
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/**
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* Get given operation rendered buffer.
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*/
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MemoryBuffer *SharedOperationBuffers::get_rendered_buffer(NodeOperation *op)
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{
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BLI_assert(is_operation_rendered(op));
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return get_buffer_data(op).buffer.get();
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}
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/**
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* Reports an operation has finished reading given operation. If all given operation dependencies
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* have finished its buffer will be disposed.
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*/
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void SharedOperationBuffers::read_finished(NodeOperation *read_op)
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{
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BufferData &buf_data = get_buffer_data(read_op);
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buf_data.received_reads++;
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BLI_assert(buf_data.received_reads > 0 && buf_data.received_reads <= buf_data.registered_reads);
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if (buf_data.received_reads == buf_data.registered_reads) {
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/* Dispose buffer. */
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buf_data.buffer = nullptr;
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}
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}
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} // namespace blender::compositor
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