Manuel Castilla
d481c6651d
Adds full frame implementation to "Alpha Over", "Hue Saturation Value", "Invert", "Tonemap" and "ZCombine" nodes. The other nodes in "Color" submenu are implemented separately. No functional changes. Reviewed By: jbakker Differential Revision: https://developer.blender.org/D12092
87 lines
2.9 KiB
C++
87 lines
2.9 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 2011, Blender Foundation.
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*/
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#include "COM_AlphaOverMixedOperation.h"
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namespace blender::compositor {
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AlphaOverMixedOperation::AlphaOverMixedOperation()
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{
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this->m_x = 0.0f;
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this->flags.can_be_constant = true;
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}
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void AlphaOverMixedOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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float inputColor1[4];
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float inputOverColor[4];
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float value[4];
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this->m_inputValueOperation->readSampled(value, x, y, sampler);
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this->m_inputColor1Operation->readSampled(inputColor1, x, y, sampler);
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this->m_inputColor2Operation->readSampled(inputOverColor, x, y, sampler);
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if (inputOverColor[3] <= 0.0f) {
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copy_v4_v4(output, inputColor1);
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}
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else if (value[0] == 1.0f && inputOverColor[3] >= 1.0f) {
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copy_v4_v4(output, inputOverColor);
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}
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else {
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float addfac = 1.0f - this->m_x + inputOverColor[3] * this->m_x;
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float premul = value[0] * addfac;
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float mul = 1.0f - value[0] * inputOverColor[3];
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output[0] = (mul * inputColor1[0]) + premul * inputOverColor[0];
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output[1] = (mul * inputColor1[1]) + premul * inputOverColor[1];
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output[2] = (mul * inputColor1[2]) + premul * inputOverColor[2];
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output[3] = (mul * inputColor1[3]) + value[0] * inputOverColor[3];
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}
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}
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void AlphaOverMixedOperation::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 *color1 = p.color1;
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const float *over_color = p.color2;
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const float value = *p.value;
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if (over_color[3] <= 0.0f) {
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copy_v4_v4(p.out, color1);
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}
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else if (value == 1.0f && over_color[3] >= 1.0f) {
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copy_v4_v4(p.out, over_color);
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}
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else {
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const float addfac = 1.0f - this->m_x + over_color[3] * this->m_x;
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const float premul = value * addfac;
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const float mul = 1.0f - value * over_color[3];
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p.out[0] = (mul * color1[0]) + premul * over_color[0];
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p.out[1] = (mul * color1[1]) + premul * over_color[1];
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p.out[2] = (mul * color1[2]) + premul * over_color[2];
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p.out[3] = (mul * color1[3]) + value * over_color[3];
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}
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}
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}
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} // namespace blender::compositor
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