💿🐜 Antkeeper source code
https://antkeeper.com
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591 lines
16 KiB
591 lines
16 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/render/material.hpp>
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#include <engine/render/material-variable.hpp>
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#include <engine/resources/resource-loader.hpp>
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#include <engine/resources/resource-manager.hpp>
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#include <engine/render/material-flags.hpp>
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#include <engine/utility/json.hpp>
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#include <engine/utility/hash/hash-combine.hpp>
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#include <utility>
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#include <type_traits>
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#include <string>
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namespace render {
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material::material(const material& other)
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{
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*this = other;
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}
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material& material::operator=(const material& other)
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{
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two_sided = other.two_sided;
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blend_mode = other.blend_mode;
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shadow_mode = other.shadow_mode;
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flags = other.flags;
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shader_template = other.shader_template;
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variable_map.clear();
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for (const auto& [key, value]: other.variable_map)
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{
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if (value)
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{
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variable_map.emplace(key, value->clone());
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}
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}
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m_hash = other.m_hash;
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return *this;
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}
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void material::set_two_sided(bool two_sided) noexcept
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{
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this->two_sided = two_sided;
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rehash();
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}
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void material::set_blend_mode(material_blend_mode mode) noexcept
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{
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blend_mode = mode;
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rehash();
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}
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void material::set_shadow_mode(material_shadow_mode mode) noexcept
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{
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shadow_mode = mode;
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rehash();
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}
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void material::set_flags(std::uint32_t flags) noexcept
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{
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this->flags = flags;
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rehash();
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}
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void material::set_shader_template(std::shared_ptr<gl::shader_template> shader_template)
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{
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this->shader_template = shader_template;
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rehash();
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}
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void material::set_variable(hash::fnv1a32_t key, std::shared_ptr<material_variable_base> value)
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{
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variable_map[key] = std::move(value);
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}
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std::shared_ptr<material_variable_base> material::get_variable(hash::fnv1a32_t key) const
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{
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if (auto i = variable_map.find(key); i != variable_map.end())
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{
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return i->second;
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}
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return nullptr;
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}
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void material::rehash() noexcept
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{
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m_hash = 0;
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if (shader_template)
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{
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m_hash = shader_template->hash();
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}
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m_hash = hash_combine(m_hash, std::hash<bool>{}(two_sided));
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m_hash = hash_combine(m_hash, std::hash<material_blend_mode>{}(blend_mode));
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m_hash = hash_combine(m_hash, std::hash<material_shadow_mode>{}(shadow_mode));
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m_hash = hash_combine(m_hash, std::hash<std::uint32_t>{}(flags));
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}
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} // namespace render
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template <typename T>
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static bool read_value(T* value, const nlohmann::json& json, const std::string& name)
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{
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if (auto element = json.find(name); element != json.end())
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{
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*value = element.value().get<T>();
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return true;
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}
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return false;
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}
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static bool load_texture_1d_property(resource_manager& resource_manager, render::material& material, hash::fnv1a32_t key, const nlohmann::json& json)
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{
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// If JSON element is an array
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if (json.is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_1d>(json.size());
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// Load textures
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std::size_t i = 0;
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for (const auto& element: json)
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{
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variable->set(i, resource_manager.load<gl::texture_1d>(element.get<std::string>()));
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++i;
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}
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material.set_variable(key, variable);
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}
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else
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_1d>(json.size());
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// Load texture
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variable->set(resource_manager.load<gl::texture_1d>(json.get<std::string>()));
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material.set_variable(key, variable);
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}
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return true;
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}
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static bool load_texture_2d_property(resource_manager& resource_manager, render::material& material, hash::fnv1a32_t key, const nlohmann::json& json)
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{
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// If JSON element is an array
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if (json.is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_2d>(json.size());
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// Load textures
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std::size_t i = 0;
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for (const auto& element: json)
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{
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variable->set(i, resource_manager.load<gl::texture_2d>(element.get<std::string>()));
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++i;
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}
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material.set_variable(key, variable);
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}
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else
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_2d>(json.size());
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// Load texture
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variable->set(resource_manager.load<gl::texture_2d>(json.get<std::string>()));
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material.set_variable(key, variable);
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}
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return true;
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}
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static bool load_texture_3d_property(resource_manager& resource_manager, render::material& material, hash::fnv1a32_t key, const nlohmann::json& json)
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{
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// If JSON element is an array
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if (json.is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_3d>(json.size());
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// Load textures
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std::size_t i = 0;
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for (const auto& element: json)
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{
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variable->set(i, resource_manager.load<gl::texture_3d>(element.get<std::string>()));
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++i;
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}
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material.set_variable(key, variable);
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}
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else
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_3d>(json.size());
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// Load texture
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variable->set(resource_manager.load<gl::texture_3d>(json.get<std::string>()));
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material.set_variable(key, variable);
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}
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return true;
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}
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static bool load_texture_cube_property(resource_manager& resource_manager, render::material& material, hash::fnv1a32_t key, const nlohmann::json& json)
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{
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// If JSON element is an array
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if (json.is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_cube>(json.size());
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// Load textures
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std::size_t i = 0;
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for (const auto& element: json)
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{
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variable->set(i, resource_manager.load<gl::texture_cube>(element.get<std::string>()));
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++i;
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}
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material.set_variable(key, variable);
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}
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else
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{
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// Create variable
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auto variable = std::make_shared<render::matvar_texture_cube>(json.size());
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// Load texture
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variable->set(resource_manager.load<gl::texture_cube>(json.get<std::string>()));
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material.set_variable(key, variable);
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}
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return true;
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}
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template <typename T>
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static bool load_scalar_property(render::material& material, hash::fnv1a32_t key, const nlohmann::json& json)
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{
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// If JSON element is an array
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if (json.is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::material_variable<T>>(json.size());
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// Set variable values
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std::size_t i = 0;
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for (const auto& element: json)
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{
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variable->set(i, element.get<T>());
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}
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material.set_variable(key, variable);
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}
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else
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{
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material.set_variable(key, std::make_shared<render::material_variable<T>>(1, json.get<T>()));
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}
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return true;
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}
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template <typename T>
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static bool load_vector_property(render::material& material, hash::fnv1a32_t key, std::size_t vector_size, const nlohmann::json& json)
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{
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// If JSON element is an array of arrays
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if (json.is_array() && json.begin().value().is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::material_variable<T>>(json.size());
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// For each vector in the array
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std::size_t i = 0;
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for (const auto& vector_element: json)
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{
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// Read vector elements
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T value;
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std::size_t j = 0;
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for (const auto& value_element: vector_element)
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value[j++] = value_element.get<typename T::element_type>();
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variable->set(i, value);
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++i;
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}
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material.set_variable(key, variable);
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}
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else
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{
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// Read vector elements
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T value;
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std::size_t i = 0;
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for (const auto& value_element: json)
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value[i++] = value_element.get<typename T::element_type>();
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material.set_variable(key, std::make_shared<render::material_variable<T>>(1, value));
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}
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return true;
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}
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template <typename T>
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static bool load_matrix_property(render::material& material, hash::fnv1a32_t key, std::size_t column_count, std::size_t row_count, const nlohmann::json& json)
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{
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// If JSON element is an array of arrays of arrays
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if (json.is_array() && json.begin().value().is_array())
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{
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if (json.begin().value().begin().value().is_array())
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{
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// Create variable
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auto variable = std::make_shared<render::material_variable<T>>(json.size());
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// For each matrix in the array
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std::size_t i = 0;
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for (const auto& matrix_element: json)
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{
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// Read vector elements
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T value;
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std::size_t j = 0;
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for (const auto& column_element: matrix_element)
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{
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std::size_t k = 0;
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for (const auto& row_element: column_element)
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{
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value[j][k] = row_element.get<typename T::element_type>();
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++k;
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}
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++j;
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}
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// Set matrix value
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variable->set(i, value);
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++i;
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}
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material.set_variable(key, variable);
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return true;
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}
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else
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{
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// Read matrix elements
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T value;
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std::size_t i = 0;
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for (const auto& column_element: json)
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{
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std::size_t j = 0;
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for (const auto& row_element: column_element)
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{
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value[i][j] = row_element.get<typename T::element_type>();
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++j;
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}
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++i;
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}
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material.set_variable(key, std::make_shared<render::material_variable<T>>(1, value));
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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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template <>
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std::unique_ptr<render::material> resource_loader<render::material>::load(::resource_manager& resource_manager, deserialize_context& ctx)
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{
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auto material = std::make_unique<render::material>();
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// Load JSON data
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auto json = resource_loader<nlohmann::json>::load(resource_manager, ctx);
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// Read two sided
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bool two_sided = false;
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read_value(&two_sided, *json, "two_sided");
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material->set_two_sided(two_sided);
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// Read blend mode
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std::string blend_mode;
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read_value(&blend_mode, *json, "blend_mode");
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if (blend_mode == "opaque")
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{
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material->set_blend_mode(render::material_blend_mode::opaque);
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}
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else if (blend_mode == "masked")
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{
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material->set_blend_mode(render::material_blend_mode::masked);
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}
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else if (blend_mode == "translucent")
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{
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material->set_blend_mode(render::material_blend_mode::translucent);
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}
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// Read shadow mode
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std::string shadow_mode;
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read_value(&shadow_mode, *json, "shadow_mode");
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if (shadow_mode == "opaque")
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{
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material->set_shadow_mode(render::material_shadow_mode::opaque);
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}
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else if (shadow_mode == "none")
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{
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material->set_shadow_mode(render::material_shadow_mode::none);
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}
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// Init material flags
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std::uint32_t flags = 0;
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// Read depth mode
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std::string depth_mode;
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read_value(&depth_mode, *json, "depth_mode");
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if (depth_mode == "in_front")
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flags |= MATERIAL_FLAG_X_RAY;
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// Read decal mode
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std::string decal_mode;
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read_value(&decal_mode, *json, "decal_mode");
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if (decal_mode == "decal")
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flags |= MATERIAL_FLAG_DECAL;
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else if (decal_mode == "surface")
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flags |= MATERIAL_FLAG_DECAL_SURFACE;
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// Set material flags
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material->set_flags(flags);
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// Read shader template filename
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std::string shader_template_filename;
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if (read_value(&shader_template_filename, *json, "shader_template"))
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{
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// Loader shader template
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material->set_shader_template(resource_manager.load<gl::shader_template>(shader_template_filename));
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}
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// Read material variables
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if (auto variables_element = json->find("variables"); variables_element != json->end())
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{
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for (const auto& variable_element: variables_element.value())
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{
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// Read variable name
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std::string name;
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if (!read_value(&name, variable_element, "name"))
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{
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// Ignore nameless properties
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continue;
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}
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// Read variable type
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std::string type;
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if (!read_value(&type, variable_element, "type"))
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{
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// Ignore typeless properties
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continue;
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}
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// Find value element
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auto value_element = variable_element.find("value");
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if (value_element == variable_element.end())
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{
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// Ignore valueless properties
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continue;
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}
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// Hash variable name
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const hash::fnv1a32_t key = hash::fnv1a32<char>(name);
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if (type == "texture_1d")
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{
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load_texture_1d_property(resource_manager, *material, key, value_element.value());
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}
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else if (type == "texture_2d")
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{
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load_texture_2d_property(resource_manager, *material, key, value_element.value());
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}
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else if (type == "texture_3d")
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{
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load_texture_3d_property(resource_manager, *material, key, value_element.value());
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}
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else if (type == "texture_cube")
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{
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load_texture_cube_property(resource_manager, *material, key, value_element.value());
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}
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// If variable type is a matrix
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else if (type[type.size() - 2] == 'x' &&
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std::isdigit(type[type.size() - 3]) &&
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std::isdigit(type.back()))
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{
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std::size_t columns = std::stoul(type.substr(type.size() - 3, 1));
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std::size_t rows = std::stoul(type.substr(type.size() - 1, 1));
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if (type.find("float") != std::string::npos)
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{
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if (columns == 2 && rows == 2)
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load_matrix_property<math::fmat2>(*material, key, columns, rows, value_element.value());
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else if (columns == 3 && rows == 3)
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load_matrix_property<math::fmat3>(*material, key, columns, rows, value_element.value());
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else if (columns == 4 && rows == 4)
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load_matrix_property<math::fmat4>(*material, key, columns, rows, value_element.value());
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}
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}
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// If variable type is a vector
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else if (std::isdigit(type.back()))
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{
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std::size_t size = std::stoul(type.substr(type.size() - 1, 1));
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if (type.find("float") != std::string::npos)
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{
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if (size == 2)
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load_vector_property<math::fvec2>(*material, key, size, value_element.value());
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else if (size == 3)
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load_vector_property<math::fvec3>(*material, key, size, value_element.value());
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else if (size == 4)
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load_vector_property<math::fvec4>(*material, key, size, value_element.value());
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}
|
|
else if (type.find("uint") != std::string::npos)
|
|
{
|
|
if (size == 2)
|
|
load_vector_property<math::uvec2>(*material, key, size, value_element.value());
|
|
else if (size == 3)
|
|
load_vector_property<math::uvec3>(*material, key, size, value_element.value());
|
|
else if (size == 4)
|
|
load_vector_property<math::uvec4>(*material, key, size, value_element.value());
|
|
}
|
|
else if (type.find("int") != std::string::npos)
|
|
{
|
|
if (size == 2)
|
|
load_vector_property<math::ivec2>(*material, key, size, value_element.value());
|
|
else if (size == 3)
|
|
load_vector_property<math::ivec3>(*material, key, size, value_element.value());
|
|
else if (size == 4)
|
|
load_vector_property<math::ivec4>(*material, key, size, value_element.value());
|
|
}
|
|
else if (type.find("bool") != std::string::npos)
|
|
{
|
|
if (size == 2)
|
|
load_vector_property<math::bvec2>(*material, key, size, value_element.value());
|
|
else if (size == 3)
|
|
load_vector_property<math::bvec3>(*material, key, size, value_element.value());
|
|
else if (size == 4)
|
|
load_vector_property<math::bvec4>(*material, key, size, value_element.value());
|
|
}
|
|
}
|
|
// If variable type is a scalar
|
|
else
|
|
{
|
|
if (type.find("float") != std::string::npos)
|
|
load_scalar_property<float>(*material, key, value_element.value());
|
|
else if (type.find("uint") != std::string::npos)
|
|
load_scalar_property<unsigned int>(*material, key, value_element.value());
|
|
else if (type.find("int") != std::string::npos)
|
|
load_scalar_property<int>(*material, key, value_element.value());
|
|
else if (type.find("bool") != std::string::npos)
|
|
load_scalar_property<bool>(*material, key, value_element.value());
|
|
}
|
|
}
|
|
}
|
|
|
|
return material;
|
|
}
|