DerelictVulkan/source/derelict/vulkan/system.d

/*

Boost Software License - Version 1.0 - August 17th, 2003

Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:

The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

*/

module derelict.vulkan.system;

import derelict.util.system;

enum VKSystem {
  Other   = 0,
  Windows = 1 << 0,
  Android = 1 << 1,
  Posix   = 1 << 2
}

mixin SystemFunctionality;

private:
import std.conv;

auto derelictVulkanSystem() {
  static if (Derelict_OS_Posix) {
    return VKSystem.Posix;
  } else static if (Derelict_OS_Windows) {
    return VKSystem.Windows;
  } else static if (Derelict_OS_Android) {
    return VKSystem.Android;
  } else {
    pragma(msg, "Non of currently supported systems is fit to yours. "
              , "If required functionality is missed, feel free to extend and share on GitHub.");
    return VKSystem.Other;
  }
}

mixin template SystemFunctionality() {
  enum currentSystem = derelictVulkanSystem();
  pragma(msg, "DerelictVulkanSystem: ", to!string(currentSystem));
  
  static if (currentSystem == VKSystem.Windows) {
    mixin WindowsSys;
  } else static if (currentSystem == VKSystem.Android) {
    mixin AndroidSys;
  } else static if (currentSystem == VKSystem.Posix) {
    mixin PosixSys;
  }
}

mixin template WindowsSys() {}

mixin template AndroidSys() {}

mixin template PosixSys() {
  version (VK_USE_PLATFORM_XCB_KHR)     mixin XCBProtocol;
  version (VK_USE_PLATFORM_XLIB_KHR)    mixin XLibProtocol;
  version (VK_USE_PLATFORM_MIR_KHR)     mixin MirProtocol;
  version (VK_USE_PLATFORM_WAYLAND_KHR) mixin WaylandProtocol;
  else pragma(msg, "Non protocol been selected for Posix system.");
}

mixin template XCBProtocol() {}

mixin template XLibProtocol() {}

mixin template MirProtocol() {}

mixin template WaylandProtocol() {}