💿🐜 Antkeeper source code
https://antkeeper.com
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91 lines
2.7 KiB
91 lines
2.7 KiB
/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code 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 Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <engine/scene/light-probe.hpp>
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namespace scene {
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light_probe::light_probe()
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{
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// Allocate illuminance texture
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m_illuminance_texture = std::make_shared<gl::texture_1d>(12, gl::pixel_type::float_32, gl::pixel_format::rgba);
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m_illuminance_texture->set_filters(gl::texture_min_filter::nearest, gl::texture_mag_filter::nearest);
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// Allocate and init illuminance framebuffer
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m_illuminance_framebuffer = std::make_shared<gl::framebuffer>(12, 1);
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m_illuminance_framebuffer->attach(gl::framebuffer_attachment_type::color, m_illuminance_texture.get());
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// Init illuminance matrices
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m_illuminance_matrices[0] = {};
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m_illuminance_matrices[1] = {};
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m_illuminance_matrices[2] = {};
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}
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void light_probe::update_illuminance_matrices()
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{
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m_illuminance_texture->read(std::as_writable_bytes(std::span{m_illuminance_matrices}), gl::pixel_type::float_32, gl::pixel_format::rgba, 0);
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}
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void light_probe::set_luminance_texture(std::shared_ptr<gl::texture_cube> texture)
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{
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if (m_luminance_texture != texture)
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{
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m_luminance_texture = texture;
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// Update luminance framebuffers
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if (m_luminance_texture)
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{
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const std::uint8_t mip_count = 1 + static_cast<std::uint8_t>(std::log2(texture->get_face_size()));
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for (std::uint8_t i = 0; i < mip_count; ++i)
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{
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if (i >= m_luminance_framebuffers.size())
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{
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m_luminance_framebuffers.emplace_back(std::make_shared<gl::framebuffer>());
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}
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m_luminance_framebuffers[i]->attach(gl::framebuffer_attachment_type::color, m_luminance_texture.get(), i);
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}
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if (m_luminance_framebuffers.size() > mip_count)
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{
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m_luminance_framebuffers.resize(mip_count);
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}
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}
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set_luminance_outdated(true);
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set_illuminance_outdated(true);
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}
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}
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void light_probe::set_luminance_outdated(bool outdated)
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{
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m_luminance_outdated = outdated;
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}
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void light_probe::set_illuminance_outdated(bool outdated)
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{
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m_illuminance_outdated = outdated;
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}
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void light_probe::transformed()
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{
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m_bounds = {get_translation(), get_translation()};
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}
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} // namespace scene
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