Campbell Barton
c434782e3a
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2011 Blender Foundation. */
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#include "COM_GammaOperation.h"
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namespace blender::compositor {
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GammaOperation::GammaOperation()
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{
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this->add_input_socket(DataType::Color);
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this->add_input_socket(DataType::Value);
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this->add_output_socket(DataType::Color);
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input_program_ = nullptr;
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input_gamma_program_ = nullptr;
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flags_.can_be_constant = true;
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}
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void GammaOperation::init_execution()
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{
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input_program_ = this->get_input_socket_reader(0);
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input_gamma_program_ = this->get_input_socket_reader(1);
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}
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void GammaOperation::execute_pixel_sampled(float output[4], float x, float y, PixelSampler sampler)
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{
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float input_value[4];
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float input_gamma[4];
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input_program_->read_sampled(input_value, x, y, sampler);
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input_gamma_program_->read_sampled(input_gamma, x, y, sampler);
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const float gamma = input_gamma[0];
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/* check for negative to avoid nan's */
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output[0] = input_value[0] > 0.0f ? powf(input_value[0], gamma) : input_value[0];
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output[1] = input_value[1] > 0.0f ? powf(input_value[1], gamma) : input_value[1];
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output[2] = input_value[2] > 0.0f ? powf(input_value[2], gamma) : input_value[2];
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output[3] = input_value[3];
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}
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void GammaOperation::update_memory_buffer_row(PixelCursor &p)
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{
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for (; p.out < p.row_end; p.next()) {
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const float *in_value = p.ins[0];
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const float *in_gamma = p.ins[1];
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const float gamma = in_gamma[0];
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/* Check for negative to avoid nan's. */
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p.out[0] = in_value[0] > 0.0f ? powf(in_value[0], gamma) : in_value[0];
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p.out[1] = in_value[1] > 0.0f ? powf(in_value[1], gamma) : in_value[1];
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p.out[2] = in_value[2] > 0.0f ? powf(in_value[2], gamma) : in_value[2];
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p.out[3] = in_value[3];
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}
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}
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void GammaOperation::deinit_execution()
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{
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input_program_ = nullptr;
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input_gamma_program_ = nullptr;
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}
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} // namespace blender::compositor
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