glTexImage2D

関数

2次元テクスチャ画像を指定して定義する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

// OPENGL32.dll
#include <windows.h>

void glTexImage2D(
    DWORD target,
    INT level,
    INT internalformat,
    INT width,
    INT height,
    INT border,
    DWORD format,
    DWORD type,
    const void* pixels
);

パラメーター

名前	型	方向	説明
target	DWORD	in	対象テクスチャ。GL_TEXTURE_2Dまたはプロキシ。
level	INT	in	ミップマップの詳細レベル。0が基底画像。
internalformat	INT	in	テクスチャ内部の色成分数または形式。
width	INT	in	テクスチャ画像の幅(テクセル数)。2のべき乗が必要。
height	INT	in	テクスチャ画像の高さ(テクセル数)。2のべき乗が必要。
border	INT	in	境界の幅。0または1を指定する。
format	DWORD	in	ピクセルデータの色形式。GL_RGB/GL_RGBAなど。
type	DWORD	in	ピクセルデータの型。GL_UNSIGNED_BYTEなど。
pixels	void*	in	画像データへのポインタ。NULLでメモリ確保のみ可。

戻り値の型: void

各言語での呼び出し定義

// OPENGL32.dll
#include <windows.h>

void glTexImage2D(
    DWORD target,
    INT level,
    INT internalformat,
    INT width,
    INT height,
    INT border,
    DWORD format,
    DWORD type,
    const void* pixels
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glTexImage2D(
    uint target,   // DWORD
    int level,   // INT
    int internalformat,   // INT
    int width,   // INT
    int height,   // INT
    int border,   // INT
    uint format,   // DWORD
    uint type,   // DWORD
    IntPtr pixels   // void*
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glTexImage2D(
    target As UInteger,   ' DWORD
    level As Integer,   ' INT
    internalformat As Integer,   ' INT
    width As Integer,   ' INT
    height As Integer,   ' INT
    border As Integer,   ' INT
    format As UInteger,   ' DWORD
    type As UInteger,   ' DWORD
    pixels As IntPtr   ' void*
)
End Sub

' target : DWORD
' level : INT
' internalformat : INT
' width : INT
' height : INT
' border : INT
' format : DWORD
' type : DWORD
' pixels : void*
Declare PtrSafe Sub glTexImage2D Lib "opengl32" ( _
    ByVal target As Long, _
    ByVal level As Long, _
    ByVal internalformat As Long, _
    ByVal width As Long, _
    ByVal height As Long, _
    ByVal border As Long, _
    ByVal format As Long, _
    ByVal type As Long, _
    ByVal pixels As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glTexImage2D = ctypes.windll.opengl32.glTexImage2D
glTexImage2D.restype = None
glTexImage2D.argtypes = [
    wintypes.DWORD,  # target : DWORD
    ctypes.c_int,  # level : INT
    ctypes.c_int,  # internalformat : INT
    ctypes.c_int,  # width : INT
    ctypes.c_int,  # height : INT
    ctypes.c_int,  # border : INT
    wintypes.DWORD,  # format : DWORD
    wintypes.DWORD,  # type : DWORD
    ctypes.POINTER(None),  # pixels : void*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glTexImage2D = Fiddle::Function.new(
  lib['glTexImage2D'],
  [
    -Fiddle::TYPE_INT,  # target : DWORD
    Fiddle::TYPE_INT,  # level : INT
    Fiddle::TYPE_INT,  # internalformat : INT
    Fiddle::TYPE_INT,  # width : INT
    Fiddle::TYPE_INT,  # height : INT
    Fiddle::TYPE_INT,  # border : INT
    -Fiddle::TYPE_INT,  # format : DWORD
    -Fiddle::TYPE_INT,  # type : DWORD
    Fiddle::TYPE_VOIDP,  # pixels : void*
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glTexImage2D(
        target: u32,  // DWORD
        level: i32,  // INT
        internalformat: i32,  // INT
        width: i32,  // INT
        height: i32,  // INT
        border: i32,  // INT
        format: u32,  // DWORD
        type: u32,  // DWORD
        pixels: *const ()  // void*
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glTexImage2D(uint target, int level, int internalformat, int width, int height, int border, uint format, uint type, IntPtr pixels);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glTexImage2D' -Namespace Win32 -PassThru
# $api::glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)

#uselib "OPENGL32.dll"
#func global glTexImage2D "glTexImage2D" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; glTexImage2D target, level, internalformat, width, height, border, format, type, pixels
; target : DWORD -> "sptr"
; level : INT -> "sptr"
; internalformat : INT -> "sptr"
; width : INT -> "sptr"
; height : INT -> "sptr"
; border : INT -> "sptr"
; format : DWORD -> "sptr"
; type : DWORD -> "sptr"
; pixels : void* -> "sptr"

#uselib "OPENGL32.dll"
#func global glTexImage2D "glTexImage2D" int, int, int, int, int, int, int, int, sptr
; glTexImage2D target, level, internalformat, width, height, border, format, type, pixels
; target : DWORD -> "int"
; level : INT -> "int"
; internalformat : INT -> "int"
; width : INT -> "int"
; height : INT -> "int"
; border : INT -> "int"
; format : DWORD -> "int"
; type : DWORD -> "int"
; pixels : void* -> "sptr"

; void glTexImage2D(DWORD target, INT level, INT internalformat, INT width, INT height, INT border, DWORD format, DWORD type, void* pixels)
#uselib "OPENGL32.dll"
#func global glTexImage2D "glTexImage2D" int, int, int, int, int, int, int, int, intptr
; glTexImage2D target, level, internalformat, width, height, border, format, type, pixels
; target : DWORD -> "int"
; level : INT -> "int"
; internalformat : INT -> "int"
; width : INT -> "int"
; height : INT -> "int"
; border : INT -> "int"
; format : DWORD -> "int"
; type : DWORD -> "int"
; pixels : void* -> "intptr"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglTexImage2D = opengl32.NewProc("glTexImage2D")
)

// target (DWORD), level (INT), internalformat (INT), width (INT), height (INT), border (INT), format (DWORD), type (DWORD), pixels (void*)
r1, _, err := procglTexImage2D.Call(
	uintptr(target),
	uintptr(level),
	uintptr(internalformat),
	uintptr(width),
	uintptr(height),
	uintptr(border),
	uintptr(format),
	uintptr(type),
	uintptr(pixels),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glTexImage2D(
  target: DWORD;   // DWORD
  level: Integer;   // INT
  internalformat: Integer;   // INT
  width: Integer;   // INT
  height: Integer;   // INT
  border: Integer;   // INT
  format: DWORD;   // DWORD
  type: DWORD;   // DWORD
  pixels: Pointer   // void*
); stdcall;
  external 'OPENGL32.dll' name 'glTexImage2D';

result := DllCall("OPENGL32\glTexImage2D"
    , "UInt", target   ; DWORD
    , "Int", level   ; INT
    , "Int", internalformat   ; INT
    , "Int", width   ; INT
    , "Int", height   ; INT
    , "Int", border   ; INT
    , "UInt", format   ; DWORD
    , "UInt", type   ; DWORD
    , "Ptr", pixels   ; void*
    , "Int")   ; return: void

●glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels) = DLL("OPENGL32.dll", "int glTexImage2D(dword, int, int, int, int, int, dword, dword, void*)")
# 呼び出し: glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
# target : DWORD -> "dword"
# level : INT -> "int"
# internalformat : INT -> "int"
# width : INT -> "int"
# height : INT -> "int"
# border : INT -> "int"
# format : DWORD -> "dword"
# type : DWORD -> "dword"
# pixels : void* -> "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 "opengl32" fn glTexImage2D(
    target: u32, // DWORD
    level: i32, // INT
    internalformat: i32, // INT
    width: i32, // INT
    height: i32, // INT
    border: i32, // INT
    format: u32, // DWORD
    type: u32, // DWORD
    pixels: ?*anyopaque // void*
) callconv(std.os.windows.WINAPI) void;

proc glTexImage2D(
    target: uint32,  # DWORD
    level: int32,  # INT
    internalformat: int32,  # INT
    width: int32,  # INT
    height: int32,  # INT
    border: int32,  # INT
    format: uint32,  # DWORD
    `type`: uint32,  # DWORD
    pixels: pointer  # void*
) {.importc: "glTexImage2D", stdcall, dynlib: "OPENGL32.dll".}

pragma(lib, "opengl32");
extern(Windows)
void glTexImage2D(
    uint target,   // DWORD
    int level,   // INT
    int internalformat,   // INT
    int width,   // INT
    int height,   // INT
    int border,   // INT
    uint format,   // DWORD
    uint type,   // DWORD
    void* pixels   // void*
);

ccall((:glTexImage2D, "OPENGL32.dll"), stdcall, Cvoid,
      (UInt32, Int32, Int32, Int32, Int32, Int32, UInt32, UInt32, Ptr{Cvoid}),
      target, level, internalformat, width, height, border, format, type, pixels)
# target : DWORD -> UInt32
# level : INT -> Int32
# internalformat : INT -> Int32
# width : INT -> Int32
# height : INT -> Int32
# border : INT -> Int32
# format : DWORD -> UInt32
# type : DWORD -> UInt32
# pixels : void* -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void glTexImage2D(
    uint32_t target,
    int32_t level,
    int32_t internalformat,
    int32_t width,
    int32_t height,
    int32_t border,
    uint32_t format,
    uint32_t type,
    void* pixels);
]]
local opengl32 = ffi.load("opengl32")
-- opengl32.glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
-- target : DWORD
-- level : INT
-- internalformat : INT
-- width : INT
-- height : INT
-- border : INT
-- format : DWORD
-- type : DWORD
-- pixels : void*
-- 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('OPENGL32.dll');
const glTexImage2D = lib.func('__stdcall', 'glTexImage2D', 'void', ['uint32_t', 'int32_t', 'int32_t', 'int32_t', 'int32_t', 'int32_t', 'uint32_t', 'uint32_t', 'void *']);
// glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
// target : DWORD -> 'uint32_t'
// level : INT -> 'int32_t'
// internalformat : INT -> 'int32_t'
// width : INT -> 'int32_t'
// height : INT -> 'int32_t'
// border : INT -> 'int32_t'
// format : DWORD -> 'uint32_t'
// type : DWORD -> 'uint32_t'
// pixels : void* -> '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("OPENGL32.dll", {
  glTexImage2D: { parameters: ["u32", "i32", "i32", "i32", "i32", "i32", "u32", "u32", "pointer"], result: "void" },
});
// lib.symbols.glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
// target : DWORD -> "u32"
// level : INT -> "i32"
// internalformat : INT -> "i32"
// width : INT -> "i32"
// height : INT -> "i32"
// border : INT -> "i32"
// format : DWORD -> "u32"
// type : DWORD -> "u32"
// pixels : void* -> "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
void glTexImage2D(
    uint32_t target,
    int32_t level,
    int32_t internalformat,
    int32_t width,
    int32_t height,
    int32_t border,
    uint32_t format,
    uint32_t type,
    void* pixels);
C, "OPENGL32.dll");
// $ffi->glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels);
// target : DWORD
// level : INT
// internalformat : INT
// width : INT
// height : INT
// border : INT
// format : DWORD
// type : DWORD
// pixels : void*
// 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 Opengl32 extends StdCallLibrary {
    Opengl32 INSTANCE = Native.load("opengl32", Opengl32.class);
    void glTexImage2D(
        int target,   // DWORD
        int level,   // INT
        int internalformat,   // INT
        int width,   // INT
        int height,   // INT
        int border,   // INT
        int format,   // DWORD
        int type,   // DWORD
        Pointer pixels   // void*
    );
}

@[Link("opengl32")]
lib LibOPENGL32
  fun glTexImage2D = glTexImage2D(
    target : UInt32,   # DWORD
    level : Int32,   # INT
    internalformat : Int32,   # INT
    width : Int32,   # INT
    height : Int32,   # INT
    border : Int32,   # INT
    format : UInt32,   # DWORD
    type_ : UInt32,   # DWORD
    pixels : Void*   # void*
  ) : Void
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 glTexImage2DNative = Void Function(Uint32, Int32, Int32, Int32, Int32, Int32, Uint32, Uint32, Pointer<Void>);
typedef glTexImage2DDart = void Function(int, int, int, int, int, int, int, int, Pointer<Void>);
final glTexImage2D = DynamicLibrary.open('OPENGL32.dll')
    .lookupFunction<glTexImage2DNative, glTexImage2DDart>('glTexImage2D');
// target : DWORD -> Uint32
// level : INT -> Int32
// internalformat : INT -> Int32
// width : INT -> Int32
// height : INT -> Int32
// border : INT -> Int32
// format : DWORD -> Uint32
// type : DWORD -> Uint32
// pixels : void* -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure glTexImage2D(
  target: DWORD;   // DWORD
  level: Integer;   // INT
  internalformat: Integer;   // INT
  width: Integer;   // INT
  height: Integer;   // INT
  border: Integer;   // INT
  format: DWORD;   // DWORD
  type: DWORD;   // DWORD
  pixels: Pointer   // void*
); stdcall;
  external 'OPENGL32.dll' name 'glTexImage2D';

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

foreign import stdcall safe "glTexImage2D"
  c_glTexImage2D :: Word32 -> Int32 -> Int32 -> Int32 -> Int32 -> Int32 -> Word32 -> Word32 -> Ptr () -> IO ()
-- target : DWORD -> Word32
-- level : INT -> Int32
-- internalformat : INT -> Int32
-- width : INT -> Int32
-- height : INT -> Int32
-- border : INT -> Int32
-- format : DWORD -> Word32
-- type : DWORD -> Word32
-- pixels : void* -> 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 glteximage2d =
  foreign "glTexImage2D"
    (uint32_t @-> int32_t @-> int32_t @-> int32_t @-> int32_t @-> int32_t @-> uint32_t @-> uint32_t @-> (ptr void) @-> returning void)
(* target : DWORD -> uint32_t *)
(* level : INT -> int32_t *)
(* internalformat : INT -> int32_t *)
(* width : INT -> int32_t *)
(* height : INT -> int32_t *)
(* border : INT -> int32_t *)
(* format : DWORD -> uint32_t *)
(* type : DWORD -> uint32_t *)
(* pixels : void* -> (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 opengl32 (t "OPENGL32.dll"))
(cffi:use-foreign-library opengl32)

(cffi:defcfun ("glTexImage2D" gl-tex-image2-d :convention :stdcall) :void
  (target :uint32)   ; DWORD
  (level :int32)   ; INT
  (internalformat :int32)   ; INT
  (width :int32)   ; INT
  (height :int32)   ; INT
  (border :int32)   ; INT
  (format :uint32)   ; DWORD
  (type :uint32)   ; DWORD
  (pixels :pointer))   ; void*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $glTexImage2D = Win32::API::More->new('OPENGL32',
    'void glTexImage2D(DWORD target, int level, int internalformat, int width, int height, int border, DWORD format, DWORD type, LPVOID pixels)');
# my $ret = $glTexImage2D->Call($target, $level, $internalformat, $width, $height, $border, $format, $type, $pixels);
# target : DWORD -> DWORD
# level : INT -> int
# internalformat : INT -> int
# width : INT -> int
# height : INT -> int
# border : INT -> int
# format : DWORD -> DWORD
# type : DWORD -> DWORD
# pixels : void* -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。