Manuel Castilla
fc5be0b598
Currently there is no clear way to know if an operation is constant (i.e. when all rendered pixels have same values). Operations may need to get constant input values before rendering to determine their resolution or areas of interest. This is the case of scale, rotate and translate operations. Only "set operations" are known as constant but many more are constant when all their inputs are so. Such cases can be optimized by only rendering one pixel. Current solution for tiled implementation is to get first pixel from input. This works for root execution groups, others need previous groups to be rendered. On full frame implementation this is not possible, because buffers are created on rendering to reduce peak memory and there is no per pixel calls. This patch evaluates all operations that are constant into primitive operations (Value/Vector/Color) before determining resolutions. Reviewed By: jbakker Differential Revision: https://developer.blender.org/D11490
86 lines
2.5 KiB
C++
86 lines
2.5 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_BufferOperation.h"
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namespace blender::compositor {
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BufferOperation::BufferOperation(MemoryBuffer *buffer, DataType data_type)
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{
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buffer_ = buffer;
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inflated_buffer_ = nullptr;
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/* TODO: Implement a MemoryBuffer get_size() method returning a Size2d type. Shorten following
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* code to: set_resolution(buffer.get_size()) */
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unsigned int resolution[2];
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resolution[0] = buffer->getWidth();
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resolution[1] = buffer->getHeight();
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setResolution(resolution);
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addOutputSocket(data_type);
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flags.is_constant_operation = buffer_->is_a_single_elem();
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}
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const float *BufferOperation::get_constant_elem()
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{
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BLI_assert(buffer_->is_a_single_elem());
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return buffer_->getBuffer();
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}
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void *BufferOperation::initializeTileData(rcti * /*rect*/)
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{
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if (buffer_->is_a_single_elem() == false) {
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return buffer_;
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}
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if (!inflated_buffer_) {
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inflated_buffer_ = buffer_->inflate();
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}
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return inflated_buffer_;
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}
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void BufferOperation::deinitExecution()
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{
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delete inflated_buffer_;
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}
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void BufferOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
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{
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switch (sampler) {
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case PixelSampler::Nearest:
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buffer_->read(output, x, y);
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break;
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case PixelSampler::Bilinear:
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default:
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buffer_->readBilinear(output, x, y);
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break;
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case PixelSampler::Bicubic:
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/* No bicubic. Same implementation as ReadBufferOperation. */
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buffer_->readBilinear(output, x, y);
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break;
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}
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}
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void BufferOperation::executePixelFiltered(
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float output[4], float x, float y, float dx[2], float dy[2])
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{
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const float uv[2] = {x, y};
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const float deriv[2][2] = {{dx[0], dx[1]}, {dy[0], dy[1]}};
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buffer_->readEWA(output, uv, deriv);
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}
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} // namespace blender::compositor
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