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traits: add some comments to the major types

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This commit is contained in:
Danny Robson 2017-09-08 17:22:56 +10:00
parent c44192d5d9
commit 32a7f6e816
1 changed files with 23 additions and 9 deletions
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32
traits.hpp
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@ -27,8 +27,9 @@
namespace cruft::vk { namespace cruft::vk {
///////////////////////////////////////////////////////////////////////////
/// describes the corresponding value for sType in native structures /// describes the corresponding value for sType in native structures
template <typename T> template <typename>
struct structure_type {}; struct structure_type {};
@ -62,7 +63,10 @@ namespace cruft::vk {
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
template <typename T> /// describes the parameter struct used to create a given vulkan type.
///
/// explicitly does not operate on vk-cruft types, only native types.
template <typename>
struct create_info { }; struct create_info { };
@ -84,7 +88,8 @@ namespace cruft::vk {
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
template <typename T> struct id_traits { }; /// describes the native type that corresponds to a given vk-cruft type.
template <typename> struct id_traits { };
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
@ -114,6 +119,10 @@ namespace cruft::vk {
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
/// describes the native type that owns a given native type, and hence
/// forms part of the create/destroy process.
///
/// undefined for types that aren't `owned' types.
template <typename> struct owner_traits {}; template <typename> struct owner_traits {};
template <> struct owner_traits<queue> { using type = device; }; template <> struct owner_traits<queue> { using type = device; };
@ -124,8 +133,16 @@ namespace cruft::vk {
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
template <typename T> struct life_traits { }; /// lists the `create' and `destroy' methods for a given native type.
///
/// XXX: if such a function does not exist anywhere then we currently use
/// tuple::ignore to simplify implementation elsewhere. we should probably
/// investigate std::is_detected for these cases though.
template <typename>
struct life_traits { };
//-------------------------------------------------------------------------
template <> struct life_traits<instance> { template <> struct life_traits<instance> {
static constexpr auto create = vkCreateInstance; static constexpr auto create = vkCreateInstance;
static constexpr auto destroy = vkDestroyInstance; static constexpr auto destroy = vkDestroyInstance;
@ -228,15 +245,12 @@ namespace cruft::vk {
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
template <typename T> struct enum_traits { }; /// describes the functions required to enumerate native types
template <typename> struct enum_traits { };
template <> struct enum_traits<physical_device> { template <> struct enum_traits<physical_device> {
static constexpr auto enumerate = vkEnumeratePhysicalDevices; static constexpr auto enumerate = vkEnumeratePhysicalDevices;
}; };
///////////////////////////////////////////////////////////////////////////
template <typename T> struct format_traits {};
} }
#endif #endif