D3D12EnableExperimentalFeatures

// d3d12.dll
#include <windows.h>

HRESULT D3D12EnableExperimentalFeatures(
    DWORD NumFeatures,
    const GUID* pIIDs,
    void* pConfigurationStructs,   // optional
    DWORD* pConfigurationStructSizes   // optional
);

<DllImport("d3d12.dll", ExactSpelling:=True)>
Public Shared Function D3D12EnableExperimentalFeatures(
    NumFeatures As UInteger,   ' DWORD
    ByRef pIIDs As Guid,   ' GUID*
    pConfigurationStructs As IntPtr,   ' void* optional
    pConfigurationStructSizes As IntPtr   ' DWORD* optional
) As Integer
End Function

' NumFeatures : DWORD
' pIIDs : GUID*
' pConfigurationStructs : void* optional
' pConfigurationStructSizes : DWORD* optional
Declare PtrSafe Function D3D12EnableExperimentalFeatures Lib "d3d12" ( _
    ByVal NumFeatures As Long, _
    ByVal pIIDs As LongPtr, _
    ByVal pConfigurationStructs As LongPtr, _
    ByVal pConfigurationStructSizes As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

D3D12EnableExperimentalFeatures = ctypes.windll.d3d12.D3D12EnableExperimentalFeatures
D3D12EnableExperimentalFeatures.restype = ctypes.c_int
D3D12EnableExperimentalFeatures.argtypes = [
    wintypes.DWORD,  # NumFeatures : DWORD
    ctypes.c_void_p,  # pIIDs : GUID*
    ctypes.POINTER(None),  # pConfigurationStructs : void* optional
    ctypes.POINTER(wintypes.DWORD),  # pConfigurationStructSizes : DWORD* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('d3d12.dll')
D3D12EnableExperimentalFeatures = Fiddle::Function.new(
  lib['D3D12EnableExperimentalFeatures'],
  [
    -Fiddle::TYPE_INT,  # NumFeatures : DWORD
    Fiddle::TYPE_VOIDP,  # pIIDs : GUID*
    Fiddle::TYPE_VOIDP,  # pConfigurationStructs : void* optional
    Fiddle::TYPE_VOIDP,  # pConfigurationStructSizes : DWORD* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "d3d12")]
extern "system" {
    fn D3D12EnableExperimentalFeatures(
        NumFeatures: u32,  // DWORD
        pIIDs: *const GUID,  // GUID*
        pConfigurationStructs: *mut (),  // void* optional
        pConfigurationStructSizes: *mut u32  // DWORD* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("d3d12.dll")]
public static extern int D3D12EnableExperimentalFeatures(uint NumFeatures, ref Guid pIIDs, IntPtr pConfigurationStructs, IntPtr pConfigurationStructSizes);
"@
$api = Add-Type -MemberDefinition $sig -Name 'd3d12_D3D12EnableExperimentalFeatures' -Namespace Win32 -PassThru
# $api::D3D12EnableExperimentalFeatures(NumFeatures, pIIDs, pConfigurationStructs, pConfigurationStructSizes)

#uselib "d3d12.dll"
#func global D3D12EnableExperimentalFeatures "D3D12EnableExperimentalFeatures" sptr, sptr, sptr, sptr
; D3D12EnableExperimentalFeatures NumFeatures, varptr(pIIDs), pConfigurationStructs, varptr(pConfigurationStructSizes)   ; 戻り値は stat
; NumFeatures : DWORD -> "sptr"
; pIIDs : GUID* -> "sptr"
; pConfigurationStructs : void* optional -> "sptr"
; pConfigurationStructSizes : DWORD* optional -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "d3d12.dll"
#cfunc global D3D12EnableExperimentalFeatures "D3D12EnableExperimentalFeatures" int, var, sptr, var
; res = D3D12EnableExperimentalFeatures(NumFeatures, pIIDs, pConfigurationStructs, pConfigurationStructSizes)
; NumFeatures : DWORD -> "int"
; pIIDs : GUID* -> "var"
; pConfigurationStructs : void* optional -> "sptr"
; pConfigurationStructSizes : DWORD* optional -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT D3D12EnableExperimentalFeatures(DWORD NumFeatures, GUID* pIIDs, void* pConfigurationStructs, DWORD* pConfigurationStructSizes)
#uselib "d3d12.dll"
#cfunc global D3D12EnableExperimentalFeatures "D3D12EnableExperimentalFeatures" int, var, intptr, var
; res = D3D12EnableExperimentalFeatures(NumFeatures, pIIDs, pConfigurationStructs, pConfigurationStructSizes)
; NumFeatures : DWORD -> "int"
; pIIDs : GUID* -> "var"
; pConfigurationStructs : void* optional -> "intptr"
; pConfigurationStructSizes : DWORD* optional -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	d3d12 = windows.NewLazySystemDLL("d3d12.dll")
	procD3D12EnableExperimentalFeatures = d3d12.NewProc("D3D12EnableExperimentalFeatures")
)

// NumFeatures (DWORD), pIIDs (GUID*), pConfigurationStructs (void* optional), pConfigurationStructSizes (DWORD* optional)
r1, _, err := procD3D12EnableExperimentalFeatures.Call(
	uintptr(NumFeatures),
	uintptr(pIIDs),
	uintptr(pConfigurationStructs),
	uintptr(pConfigurationStructSizes),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function D3D12EnableExperimentalFeatures(
  NumFeatures: DWORD;   // DWORD
  pIIDs: PGUID;   // GUID*
  pConfigurationStructs: Pointer;   // void* optional
  pConfigurationStructSizes: Pointer   // DWORD* optional
): Integer; stdcall;
  external 'd3d12.dll' name 'D3D12EnableExperimentalFeatures';

result := DllCall("d3d12\D3D12EnableExperimentalFeatures"
    , "UInt", NumFeatures   ; DWORD
    , "Ptr", pIIDs   ; GUID*
    , "Ptr", pConfigurationStructs   ; void* optional
    , "Ptr", pConfigurationStructSizes   ; DWORD* optional
    , "Int")   ; return: HRESULT

●D3D12EnableExperimentalFeatures(NumFeatures, pIIDs, pConfigurationStructs, pConfigurationStructSizes) = DLL("d3d12.dll", "int D3D12EnableExperimentalFeatures(dword, void*, void*, void*)")
# 呼び出し: D3D12EnableExperimentalFeatures(NumFeatures, pIIDs, pConfigurationStructs, pConfigurationStructSizes)
# NumFeatures : DWORD -> "dword"
# pIIDs : GUID* -> "void*"
# pConfigurationStructs : void* optional -> "void*"
# pConfigurationStructSizes : DWORD* optional -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。