158 lines
4.0 KiB
C++
158 lines
4.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright:
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* 2016-2017, Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef CRUFT_VK_OBJECT_HPP
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#define CRUFT_VK_OBJECT_HPP
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#include "./traits.hpp"
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#include "./except.hpp"
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#include <utility>
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#include <vector>
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namespace cruft::vk {
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/// the base class for all non-trivial vulkan objects requiring lifetime
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/// management.
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template <typename T>
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struct object {
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using id_t = typename id_traits<T>::id_t;
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object (id_t);
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object (object&&);
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object (const object&) = delete;
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const id_t& id (void) const&;
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id_t& id (void) &;
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protected:
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id_t m_id;
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};
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template <typename SelfT>
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struct root : public object<SelfT> {
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using id_t = typename object<SelfT>::id_t;
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template <typename ...Args>
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root (Args &&...args):
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object<SelfT> (make (std::forward<Args> (args)...))
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{ ; }
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~root ()
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{
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life_traits<SelfT>::destroy (this->id (), nullptr);
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}
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private:
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template <typename ...Args>
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static id_t
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make (Args &&...args)
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{
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id_t id;
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auto res = life_traits<SelfT>::create (std::forward<Args> (args)..., &id);
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error::try_code (res);
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return id;
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}
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};
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/// a vulkan object that must be directly instantiated through
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/// constructor arguments, rather than being enumerated and owned by
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/// another object.
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template <typename T>
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struct descendant : public object<T> {
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using id_t = typename object<T>::id_t;
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template <typename ...Args>
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descendant (Args &&...args):
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object<T> (make (std::forward<Args> (args)...))
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{ ; }
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~descendant ()
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{
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life_traits<T>::destroy (this->id (), nullptr);
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}
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private:
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template <typename Base, typename ...Args>
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static
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id_t make (Base &&base, Args &&...args)
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{
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id_t id;
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auto res = life_traits<T>::create (base.id (), std::forward<Args> (args)..., &id);
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error::try_code (res);
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return id;
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}
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};
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/// a vulkan object that is obtained by listings from a parent object.
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template <typename T>
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struct enumerated : public object<T> {
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using object<T>::object;
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static std::vector<T>
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find (const instance &parent);
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};
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/// a vulkan object that is directly owned by a parent object.
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///
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/// typically implies that this object must be freed using a reference to
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/// the parent object.
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template <typename SelfT, typename OwnerT>
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struct owned : public object<SelfT> {
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using id_t = typename object<SelfT>::id_t;
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using owner_t = OwnerT;
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using object<SelfT>::object;
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template <typename ...Args>
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owned (Args &&...args):
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object<SelfT> (make (std::forward<Args> (args)...))
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{ ; }
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~owned ()
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{
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CHECK_EQ (this->id (), VK_NULL_HANDLE);
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}
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void
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destroy (OwnerT &parent)
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{
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life_traits<SelfT>::destroy (parent.id (), this->id (), nullptr);
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this->m_id = VK_NULL_HANDLE;
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}
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private:
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template <typename ...Args>
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static
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id_t make (OwnerT &owner, Args &&...args)
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{
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id_t id;
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life_traits<SelfT>::get (owner.id (), std::forward<Args> (args)..., &id);
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return id;
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}
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};
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}
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#endif
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