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D3DCompileFromFile

関数

ファイルからHLSLシェーダーをコンパイルする。

シグネチャ

// D3DCOMPILER_47.dll
#include <windows.h>

HRESULT D3DCompileFromFile(
    LPCWSTR pFileName,
    const D3D_SHADER_MACRO* pDefines,   // optional
    ID3DInclude* pInclude,   // optional
    LPCSTR pEntrypoint,
    LPCSTR pTarget,
    DWORD Flags1,
    DWORD Flags2,
    ID3DBlob** ppCode,
    ID3DBlob** ppErrorMsgs   // optional
);

パラメーター

名前	型	方向	説明
pFileName	LPCWSTR	in	コンパイルするHLSLファイルのパスを指すワイド文字列へのポインター。
pDefines	D3D_SHADER_MACRO*	inoptional	プリプロセッサ定義の配列(D3D_SHADER_MACRO)へのポインター。NULL可。
pInclude	ID3DInclude*	inoptional	#includeを解決するID3DIncludeハンドラへのポインター。D3D_COMPILE_STANDARD_FILE_INCLUDE指定可。
pEntrypoint	LPCSTR	in	シェーダーのエントリポイント関数名へのポインター。
pTarget	LPCSTR	in	コンパイル対象のシェーダープロファイル文字列へのポインター。
Flags1	DWORD	in	コンパイル動作を制御するフラグ(D3DCOMPILE_*)。
Flags2	DWORD	in	エフェクトコンパイル用のフラグ(D3DCOMPILE_EFFECT_*)。
ppCode	ID3DBlob**	out	生成されたコンパイル済みバイトコードを受け取るID3DBlob出力ポインター。
ppErrorMsgs	ID3DBlob**	outoptional	コンパイルエラー・警告メッセージを受け取るID3DBlob出力ポインター。NULL可。

戻り値の型: HRESULT

各言語での呼び出し定義

// D3DCOMPILER_47.dll
#include <windows.h>

HRESULT D3DCompileFromFile(
    LPCWSTR pFileName,
    const D3D_SHADER_MACRO* pDefines,   // optional
    ID3DInclude* pInclude,   // optional
    LPCSTR pEntrypoint,
    LPCSTR pTarget,
    DWORD Flags1,
    DWORD Flags2,
    ID3DBlob** ppCode,
    ID3DBlob** ppErrorMsgs   // optional
);

[DllImport("D3DCOMPILER_47.dll", ExactSpelling = true)]
static extern int D3DCompileFromFile(
    [MarshalAs(UnmanagedType.LPWStr)] string pFileName,   // LPCWSTR
    IntPtr pDefines,   // D3D_SHADER_MACRO* optional
    IntPtr pInclude,   // ID3DInclude* optional
    [MarshalAs(UnmanagedType.LPStr)] string pEntrypoint,   // LPCSTR
    [MarshalAs(UnmanagedType.LPStr)] string pTarget,   // LPCSTR
    uint Flags1,   // DWORD
    uint Flags2,   // DWORD
    IntPtr ppCode,   // ID3DBlob** out
    IntPtr ppErrorMsgs   // ID3DBlob** optional, out
);

<DllImport("D3DCOMPILER_47.dll", ExactSpelling:=True)>
Public Shared Function D3DCompileFromFile(
    <MarshalAs(UnmanagedType.LPWStr)> pFileName As String,   ' LPCWSTR
    pDefines As IntPtr,   ' D3D_SHADER_MACRO* optional
    pInclude As IntPtr,   ' ID3DInclude* optional
    <MarshalAs(UnmanagedType.LPStr)> pEntrypoint As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> pTarget As String,   ' LPCSTR
    Flags1 As UInteger,   ' DWORD
    Flags2 As UInteger,   ' DWORD
    ppCode As IntPtr,   ' ID3DBlob** out
    ppErrorMsgs As IntPtr   ' ID3DBlob** optional, out
) As Integer
End Function

' pFileName : LPCWSTR
' pDefines : D3D_SHADER_MACRO* optional
' pInclude : ID3DInclude* optional
' pEntrypoint : LPCSTR
' pTarget : LPCSTR
' Flags1 : DWORD
' Flags2 : DWORD
' ppCode : ID3DBlob** out
' ppErrorMsgs : ID3DBlob** optional, out
Declare PtrSafe Function D3DCompileFromFile Lib "d3dcompiler_47" ( _
    ByVal pFileName As LongPtr, _
    ByVal pDefines As LongPtr, _
    ByVal pInclude As LongPtr, _
    ByVal pEntrypoint As String, _
    ByVal pTarget As String, _
    ByVal Flags1 As Long, _
    ByVal Flags2 As Long, _
    ByVal ppCode As LongPtr, _
    ByVal ppErrorMsgs 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

D3DCompileFromFile = ctypes.windll.d3dcompiler_47.D3DCompileFromFile
D3DCompileFromFile.restype = ctypes.c_int
D3DCompileFromFile.argtypes = [
    wintypes.LPCWSTR,  # pFileName : LPCWSTR
    ctypes.c_void_p,  # pDefines : D3D_SHADER_MACRO* optional
    ctypes.c_void_p,  # pInclude : ID3DInclude* optional
    wintypes.LPCSTR,  # pEntrypoint : LPCSTR
    wintypes.LPCSTR,  # pTarget : LPCSTR
    wintypes.DWORD,  # Flags1 : DWORD
    wintypes.DWORD,  # Flags2 : DWORD
    ctypes.c_void_p,  # ppCode : ID3DBlob** out
    ctypes.c_void_p,  # ppErrorMsgs : ID3DBlob** optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('D3DCOMPILER_47.dll')
D3DCompileFromFile = Fiddle::Function.new(
  lib['D3DCompileFromFile'],
  [
    Fiddle::TYPE_VOIDP,  # pFileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pDefines : D3D_SHADER_MACRO* optional
    Fiddle::TYPE_VOIDP,  # pInclude : ID3DInclude* optional
    Fiddle::TYPE_VOIDP,  # pEntrypoint : LPCSTR
    Fiddle::TYPE_VOIDP,  # pTarget : LPCSTR
    -Fiddle::TYPE_INT,  # Flags1 : DWORD
    -Fiddle::TYPE_INT,  # Flags2 : DWORD
    Fiddle::TYPE_VOIDP,  # ppCode : ID3DBlob** out
    Fiddle::TYPE_VOIDP,  # ppErrorMsgs : ID3DBlob** optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "d3dcompiler_47")]
extern "system" {
    fn D3DCompileFromFile(
        pFileName: *const u16,  // LPCWSTR
        pDefines: *const D3D_SHADER_MACRO,  // D3D_SHADER_MACRO* optional
        pInclude: *mut core::ffi::c_void,  // ID3DInclude* optional
        pEntrypoint: *const u8,  // LPCSTR
        pTarget: *const u8,  // LPCSTR
        Flags1: u32,  // DWORD
        Flags2: u32,  // DWORD
        ppCode: *mut *mut core::ffi::c_void,  // ID3DBlob** out
        ppErrorMsgs: *mut *mut core::ffi::c_void  // ID3DBlob** optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("D3DCOMPILER_47.dll")]
public static extern int D3DCompileFromFile([MarshalAs(UnmanagedType.LPWStr)] string pFileName, IntPtr pDefines, IntPtr pInclude, [MarshalAs(UnmanagedType.LPStr)] string pEntrypoint, [MarshalAs(UnmanagedType.LPStr)] string pTarget, uint Flags1, uint Flags2, IntPtr ppCode, IntPtr ppErrorMsgs);
"@
$api = Add-Type -MemberDefinition $sig -Name 'D3DCOMPILER_47_D3DCompileFromFile' -Namespace Win32 -PassThru
# $api::D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)

#uselib "D3DCOMPILER_47.dll"
#func global D3DCompileFromFile "D3DCompileFromFile" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; D3DCompileFromFile pFileName, varptr(pDefines), pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs   ; 戻り値は stat
; pFileName : LPCWSTR -> "sptr"
; pDefines : D3D_SHADER_MACRO* optional -> "sptr"
; pInclude : ID3DInclude* optional -> "sptr"
; pEntrypoint : LPCSTR -> "sptr"
; pTarget : LPCSTR -> "sptr"
; Flags1 : DWORD -> "sptr"
; Flags2 : DWORD -> "sptr"
; ppCode : ID3DBlob** out -> "sptr"
; ppErrorMsgs : ID3DBlob** optional, out -> "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。

出力引数:

#uselib "D3DCOMPILER_47.dll"
#cfunc global D3DCompileFromFile "D3DCompileFromFile" wstr, var, sptr, str, str, int, int, sptr, sptr
; res = D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
; pFileName : LPCWSTR -> "wstr"
; pDefines : D3D_SHADER_MACRO* optional -> "var"
; pInclude : ID3DInclude* optional -> "sptr"
; pEntrypoint : LPCSTR -> "str"
; pTarget : LPCSTR -> "str"
; Flags1 : DWORD -> "int"
; Flags2 : DWORD -> "int"
; ppCode : ID3DBlob** out -> "sptr"
; ppErrorMsgs : ID3DBlob** optional, out -> "sptr"
; ※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。#uselib "D3DCOMPILER_47.dll"
#cfunc global D3DCompileFromFile "D3DCompileFromFile" wstr, sptr, sptr, str, str, int, int, sptr, sptr
; res = D3DCompileFromFile(pFileName, varptr(pDefines), pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
; pFileName : LPCWSTR -> "wstr"
; pDefines : D3D_SHADER_MACRO* optional -> "sptr"
; pInclude : ID3DInclude* optional -> "sptr"
; pEntrypoint : LPCSTR -> "str"
; pTarget : LPCSTR -> "str"
; Flags1 : DWORD -> "int"
; Flags2 : DWORD -> "int"
; ppCode : ID3DBlob** out -> "sptr"
; ppErrorMsgs : ID3DBlob** optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HRESULT D3DCompileFromFile(LPCWSTR pFileName, D3D_SHADER_MACRO* pDefines, ID3DInclude* pInclude, LPCSTR pEntrypoint, LPCSTR pTarget, DWORD Flags1, DWORD Flags2, ID3DBlob** ppCode, ID3DBlob** ppErrorMsgs)
#uselib "D3DCOMPILER_47.dll"
#cfunc global D3DCompileFromFile "D3DCompileFromFile" wstr, var, intptr, str, str, int, int, intptr, intptr
; res = D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
; pFileName : LPCWSTR -> "wstr"
; pDefines : D3D_SHADER_MACRO* optional -> "var"
; pInclude : ID3DInclude* optional -> "intptr"
; pEntrypoint : LPCSTR -> "str"
; pTarget : LPCSTR -> "str"
; Flags1 : DWORD -> "int"
; Flags2 : DWORD -> "int"
; ppCode : ID3DBlob** out -> "intptr"
; ppErrorMsgs : ID3DBlob** optional, out -> "intptr"
; ※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 D3DCompileFromFile(LPCWSTR pFileName, D3D_SHADER_MACRO* pDefines, ID3DInclude* pInclude, LPCSTR pEntrypoint, LPCSTR pTarget, DWORD Flags1, DWORD Flags2, ID3DBlob** ppCode, ID3DBlob** ppErrorMsgs)
#uselib "D3DCOMPILER_47.dll"
#cfunc global D3DCompileFromFile "D3DCompileFromFile" wstr, intptr, intptr, str, str, int, int, intptr, intptr
; res = D3DCompileFromFile(pFileName, varptr(pDefines), pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
; pFileName : LPCWSTR -> "wstr"
; pDefines : D3D_SHADER_MACRO* optional -> "intptr"
; pInclude : ID3DInclude* optional -> "intptr"
; pEntrypoint : LPCSTR -> "str"
; pTarget : LPCSTR -> "str"
; Flags1 : DWORD -> "int"
; Flags2 : DWORD -> "int"
; ppCode : ID3DBlob** out -> "intptr"
; ppErrorMsgs : ID3DBlob** optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	d3dcompiler_47 = windows.NewLazySystemDLL("D3DCOMPILER_47.dll")
	procD3DCompileFromFile = d3dcompiler_47.NewProc("D3DCompileFromFile")
)

// pFileName (LPCWSTR), pDefines (D3D_SHADER_MACRO* optional), pInclude (ID3DInclude* optional), pEntrypoint (LPCSTR), pTarget (LPCSTR), Flags1 (DWORD), Flags2 (DWORD), ppCode (ID3DBlob** out), ppErrorMsgs (ID3DBlob** optional, out)
r1, _, err := procD3DCompileFromFile.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pFileName))),
	uintptr(pDefines),
	uintptr(pInclude),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pEntrypoint))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pTarget))),
	uintptr(Flags1),
	uintptr(Flags2),
	uintptr(ppCode),
	uintptr(ppErrorMsgs),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function D3DCompileFromFile(
  pFileName: PWideChar;   // LPCWSTR
  pDefines: Pointer;   // D3D_SHADER_MACRO* optional
  pInclude: Pointer;   // ID3DInclude* optional
  pEntrypoint: PAnsiChar;   // LPCSTR
  pTarget: PAnsiChar;   // LPCSTR
  Flags1: DWORD;   // DWORD
  Flags2: DWORD;   // DWORD
  ppCode: Pointer;   // ID3DBlob** out
  ppErrorMsgs: Pointer   // ID3DBlob** optional, out
): Integer; stdcall;
  external 'D3DCOMPILER_47.dll' name 'D3DCompileFromFile';

result := DllCall("D3DCOMPILER_47\D3DCompileFromFile"
    , "WStr", pFileName   ; LPCWSTR
    , "Ptr", pDefines   ; D3D_SHADER_MACRO* optional
    , "Ptr", pInclude   ; ID3DInclude* optional
    , "AStr", pEntrypoint   ; LPCSTR
    , "AStr", pTarget   ; LPCSTR
    , "UInt", Flags1   ; DWORD
    , "UInt", Flags2   ; DWORD
    , "Ptr", ppCode   ; ID3DBlob** out
    , "Ptr", ppErrorMsgs   ; ID3DBlob** optional, out
    , "Int")   ; return: HRESULT

●D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs) = DLL("D3DCOMPILER_47.dll", "int D3DCompileFromFile(char*, void*, void*, char*, char*, dword, dword, void*, void*)")
# 呼び出し: D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
# pFileName : LPCWSTR -> "char*"
# pDefines : D3D_SHADER_MACRO* optional -> "void*"
# pInclude : ID3DInclude* optional -> "void*"
# pEntrypoint : LPCSTR -> "char*"
# pTarget : LPCSTR -> "char*"
# Flags1 : DWORD -> "dword"
# Flags2 : DWORD -> "dword"
# ppCode : ID3DBlob** out -> "void*"
# ppErrorMsgs : ID3DBlob** optional, out -> "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)。

const std = @import("std");

extern "d3dcompiler_47" fn D3DCompileFromFile(
    pFileName: [*c]const u16, // LPCWSTR
    pDefines: [*c]D3D_SHADER_MACRO, // D3D_SHADER_MACRO* optional
    pInclude: ?*anyopaque, // ID3DInclude* optional
    pEntrypoint: [*c]const u8, // LPCSTR
    pTarget: [*c]const u8, // LPCSTR
    Flags1: u32, // DWORD
    Flags2: u32, // DWORD
    ppCode: ?*anyopaque, // ID3DBlob** out
    ppErrorMsgs: ?*anyopaque // ID3DBlob** optional, out
) callconv(std.os.windows.WINAPI) i32;

proc D3DCompileFromFile(
    pFileName: WideCString,  # LPCWSTR
    pDefines: ptr D3D_SHADER_MACRO,  # D3D_SHADER_MACRO* optional
    pInclude: pointer,  # ID3DInclude* optional
    pEntrypoint: cstring,  # LPCSTR
    pTarget: cstring,  # LPCSTR
    Flags1: uint32,  # DWORD
    Flags2: uint32,  # DWORD
    ppCode: pointer,  # ID3DBlob** out
    ppErrorMsgs: pointer  # ID3DBlob** optional, out
): int32 {.importc: "D3DCompileFromFile", stdcall, dynlib: "D3DCOMPILER_47.dll".}

pragma(lib, "d3dcompiler_47");
extern(Windows)
int D3DCompileFromFile(
    const(wchar)* pFileName,   // LPCWSTR
    D3D_SHADER_MACRO* pDefines,   // D3D_SHADER_MACRO* optional
    void* pInclude,   // ID3DInclude* optional
    const(char)* pEntrypoint,   // LPCSTR
    const(char)* pTarget,   // LPCSTR
    uint Flags1,   // DWORD
    uint Flags2,   // DWORD
    void* ppCode,   // ID3DBlob** out
    void* ppErrorMsgs   // ID3DBlob** optional, out
);

ccall((:D3DCompileFromFile, "D3DCOMPILER_47.dll"), stdcall, Int32,
      (Cwstring, Ptr{D3D_SHADER_MACRO}, Ptr{Cvoid}, Cstring, Cstring, UInt32, UInt32, Ptr{Cvoid}, Ptr{Cvoid}),
      pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
# pFileName : LPCWSTR -> Cwstring
# pDefines : D3D_SHADER_MACRO* optional -> Ptr{D3D_SHADER_MACRO}
# pInclude : ID3DInclude* optional -> Ptr{Cvoid}
# pEntrypoint : LPCSTR -> Cstring
# pTarget : LPCSTR -> Cstring
# Flags1 : DWORD -> UInt32
# Flags2 : DWORD -> UInt32
# ppCode : ID3DBlob** out -> Ptr{Cvoid}
# ppErrorMsgs : ID3DBlob** optional, out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t D3DCompileFromFile(
    const uint16_t* pFileName,
    void* pDefines,
    void* pInclude,
    const char* pEntrypoint,
    const char* pTarget,
    uint32_t Flags1,
    uint32_t Flags2,
    void* ppCode,
    void* ppErrorMsgs);
]]
local d3dcompiler_47 = ffi.load("d3dcompiler_47")
-- d3dcompiler_47.D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
-- pFileName : LPCWSTR
-- pDefines : D3D_SHADER_MACRO* optional
-- pInclude : ID3DInclude* optional
-- pEntrypoint : LPCSTR
-- pTarget : LPCSTR
-- Flags1 : DWORD
-- Flags2 : DWORD
-- ppCode : ID3DBlob** out
-- ppErrorMsgs : ID3DBlob** optional, out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('D3DCOMPILER_47.dll');
const D3DCompileFromFile = lib.func('__stdcall', 'D3DCompileFromFile', 'int32_t', ['str16', 'void *', 'void *', 'str', 'str', 'uint32_t', 'uint32_t', 'void *', 'void *']);
// D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
// pFileName : LPCWSTR -> 'str16'
// pDefines : D3D_SHADER_MACRO* optional -> 'void *'
// pInclude : ID3DInclude* optional -> 'void *'
// pEntrypoint : LPCSTR -> 'str'
// pTarget : LPCSTR -> 'str'
// Flags1 : DWORD -> 'uint32_t'
// Flags2 : DWORD -> 'uint32_t'
// ppCode : ID3DBlob** out -> 'void *'
// ppErrorMsgs : ID3DBlob** optional, out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("D3DCOMPILER_47.dll", {
  D3DCompileFromFile: { parameters: ["buffer", "pointer", "pointer", "buffer", "buffer", "u32", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs)
// pFileName : LPCWSTR -> "buffer"
// pDefines : D3D_SHADER_MACRO* optional -> "pointer"
// pInclude : ID3DInclude* optional -> "pointer"
// pEntrypoint : LPCSTR -> "buffer"
// pTarget : LPCSTR -> "buffer"
// Flags1 : DWORD -> "u32"
// Flags2 : DWORD -> "u32"
// ppCode : ID3DBlob** out -> "pointer"
// ppErrorMsgs : ID3DBlob** optional, out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t D3DCompileFromFile(
    const uint16_t* pFileName,
    void* pDefines,
    void* pInclude,
    const char* pEntrypoint,
    const char* pTarget,
    uint32_t Flags1,
    uint32_t Flags2,
    void* ppCode,
    void* ppErrorMsgs);
C, "D3DCOMPILER_47.dll");
// $ffi->D3DCompileFromFile(pFileName, pDefines, pInclude, pEntrypoint, pTarget, Flags1, Flags2, ppCode, ppErrorMsgs);
// pFileName : LPCWSTR
// pDefines : D3D_SHADER_MACRO* optional
// pInclude : ID3DInclude* optional
// pEntrypoint : LPCSTR
// pTarget : LPCSTR
// Flags1 : DWORD
// Flags2 : DWORD
// ppCode : ID3DBlob** out
// ppErrorMsgs : ID3DBlob** optional, out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface D3dcompiler_47 extends StdCallLibrary {
    D3dcompiler_47 INSTANCE = Native.load("d3dcompiler_47", D3dcompiler_47.class);
    int D3DCompileFromFile(
        WString pFileName,   // LPCWSTR
        Pointer pDefines,   // D3D_SHADER_MACRO* optional
        Pointer pInclude,   // ID3DInclude* optional
        String pEntrypoint,   // LPCSTR
        String pTarget,   // LPCSTR
        int Flags1,   // DWORD
        int Flags2,   // DWORD
        Pointer ppCode,   // ID3DBlob** out
        Pointer ppErrorMsgs   // ID3DBlob** optional, out
    );
}

@[Link("d3dcompiler_47")]
lib LibD3DCOMPILER_47
  fun D3DCompileFromFile = D3DCompileFromFile(
    pFileName : UInt16*,   # LPCWSTR
    pDefines : D3D_SHADER_MACRO*,   # D3D_SHADER_MACRO* optional
    pInclude : Void*,   # ID3DInclude* optional
    pEntrypoint : UInt8*,   # LPCSTR
    pTarget : UInt8*,   # LPCSTR
    Flags1 : UInt32,   # DWORD
    Flags2 : UInt32,   # DWORD
    ppCode : Void*,   # ID3DBlob** out
    ppErrorMsgs : Void*   # ID3DBlob** optional, out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef D3DCompileFromFileNative = Int32 Function(Pointer<Utf16>, Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Uint32, Uint32, Pointer<Void>, Pointer<Void>);
typedef D3DCompileFromFileDart = int Function(Pointer<Utf16>, Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, int, int, Pointer<Void>, Pointer<Void>);
final D3DCompileFromFile = DynamicLibrary.open('D3DCOMPILER_47.dll')
    .lookupFunction<D3DCompileFromFileNative, D3DCompileFromFileDart>('D3DCompileFromFile');
// pFileName : LPCWSTR -> Pointer<Utf16>
// pDefines : D3D_SHADER_MACRO* optional -> Pointer<Void>
// pInclude : ID3DInclude* optional -> Pointer<Void>
// pEntrypoint : LPCSTR -> Pointer<Utf8>
// pTarget : LPCSTR -> Pointer<Utf8>
// Flags1 : DWORD -> Uint32
// Flags2 : DWORD -> Uint32
// ppCode : ID3DBlob** out -> Pointer<Void>
// ppErrorMsgs : ID3DBlob** optional, out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function D3DCompileFromFile(
  pFileName: PWideChar;   // LPCWSTR
  pDefines: Pointer;   // D3D_SHADER_MACRO* optional
  pInclude: Pointer;   // ID3DInclude* optional
  pEntrypoint: PAnsiChar;   // LPCSTR
  pTarget: PAnsiChar;   // LPCSTR
  Flags1: DWORD;   // DWORD
  Flags2: DWORD;   // DWORD
  ppCode: Pointer;   // ID3DBlob** out
  ppErrorMsgs: Pointer   // ID3DBlob** optional, out
): Integer; stdcall;
  external 'D3DCOMPILER_47.dll' name 'D3DCompileFromFile';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "D3DCompileFromFile"
  c_D3DCompileFromFile :: CWString -> Ptr () -> Ptr () -> CString -> CString -> Word32 -> Word32 -> Ptr () -> Ptr () -> IO Int32
-- pFileName : LPCWSTR -> CWString
-- pDefines : D3D_SHADER_MACRO* optional -> Ptr ()
-- pInclude : ID3DInclude* optional -> Ptr ()
-- pEntrypoint : LPCSTR -> CString
-- pTarget : LPCSTR -> CString
-- Flags1 : DWORD -> Word32
-- Flags2 : DWORD -> Word32
-- ppCode : ID3DBlob** out -> Ptr ()
-- ppErrorMsgs : ID3DBlob** optional, out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let d3dcompilefromfile =
  foreign "D3DCompileFromFile"
    ((ptr uint16_t) @-> (ptr void) @-> (ptr void) @-> string @-> string @-> uint32_t @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pFileName : LPCWSTR -> (ptr uint16_t) *)
(* pDefines : D3D_SHADER_MACRO* optional -> (ptr void) *)
(* pInclude : ID3DInclude* optional -> (ptr void) *)
(* pEntrypoint : LPCSTR -> string *)
(* pTarget : LPCSTR -> string *)
(* Flags1 : DWORD -> uint32_t *)
(* Flags2 : DWORD -> uint32_t *)
(* ppCode : ID3DBlob** out -> (ptr void) *)
(* ppErrorMsgs : ID3DBlob** optional, out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library d3dcompiler_47 (t "D3DCOMPILER_47.dll"))
(cffi:use-foreign-library d3dcompiler_47)

(cffi:defcfun ("D3DCompileFromFile" d3-dcompile-from-file :convention :stdcall) :int32
  (p-file-name (:string :encoding :utf-16le))   ; LPCWSTR
  (p-defines :pointer)   ; D3D_SHADER_MACRO* optional
  (p-include :pointer)   ; ID3DInclude* optional
  (p-entrypoint :string)   ; LPCSTR
  (p-target :string)   ; LPCSTR
  (flags1 :uint32)   ; DWORD
  (flags2 :uint32)   ; DWORD
  (pp-code :pointer)   ; ID3DBlob** out
  (pp-error-msgs :pointer))   ; ID3DBlob** optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $D3DCompileFromFile = Win32::API::More->new('D3DCOMPILER_47',
    'int D3DCompileFromFile(LPCWSTR pFileName, LPVOID pDefines, LPVOID pInclude, LPCSTR pEntrypoint, LPCSTR pTarget, DWORD Flags1, DWORD Flags2, LPVOID ppCode, LPVOID ppErrorMsgs)');
# my $ret = $D3DCompileFromFile->Call($pFileName, $pDefines, $pInclude, $pEntrypoint, $pTarget, $Flags1, $Flags2, $ppCode, $ppErrorMsgs);
# pFileName : LPCWSTR -> LPCWSTR
# pDefines : D3D_SHADER_MACRO* optional -> LPVOID
# pInclude : ID3DInclude* optional -> LPVOID
# pEntrypoint : LPCSTR -> LPCSTR
# pTarget : LPCSTR -> LPCSTR
# Flags1 : DWORD -> DWORD
# Flags2 : DWORD -> DWORD
# ppCode : ID3DBlob** out -> LPVOID
# ppErrorMsgs : ID3DBlob** optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

D3DCompileFromFile

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