glPixelStoref

関数

ピクセルの格納・読み出しモードを浮動小数点値で設定する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glPixelStoref(
    DWORD pname,
    FLOAT param1
);

パラメーター

名前	型	方向
pname	DWORD	in
param1	FLOAT	in

戻り値の型: void

各言語での呼び出し定義

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

void glPixelStoref(
    DWORD pname,
    FLOAT param1
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glPixelStoref(
    uint pname,   // DWORD
    float param1   // FLOAT
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glPixelStoref(
    pname As UInteger,   ' DWORD
    param1 As Single   ' FLOAT
)
End Sub

' pname : DWORD
' param1 : FLOAT
Declare PtrSafe Sub glPixelStoref Lib "opengl32" ( _
    ByVal pname As Long, _
    ByVal param1 As Single)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glPixelStoref = ctypes.windll.opengl32.glPixelStoref
glPixelStoref.restype = None
glPixelStoref.argtypes = [
    wintypes.DWORD,  # pname : DWORD
    ctypes.c_float,  # param1 : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glPixelStoref = Fiddle::Function.new(
  lib['glPixelStoref'],
  [
    -Fiddle::TYPE_INT,  # pname : DWORD
    Fiddle::TYPE_FLOAT,  # param1 : FLOAT
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glPixelStoref(
        pname: u32,  // DWORD
        param1: f32  // FLOAT
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glPixelStoref(uint pname, float param1);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glPixelStoref' -Namespace Win32 -PassThru
# $api::glPixelStoref(pname, param1)

#uselib "OPENGL32.dll"
#func global glPixelStoref "glPixelStoref" sptr, float
; glPixelStoref pname, param1
; pname : DWORD -> "sptr"
; param1 : FLOAT -> "float"

#uselib "OPENGL32.dll"
#func global glPixelStoref "glPixelStoref" int, float
; glPixelStoref pname, param1
; pname : DWORD -> "int"
; param1 : FLOAT -> "float"

; void glPixelStoref(DWORD pname, FLOAT param1)
#uselib "OPENGL32.dll"
#func global glPixelStoref "glPixelStoref" int, float
; glPixelStoref pname, param1
; pname : DWORD -> "int"
; param1 : FLOAT -> "float"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglPixelStoref = opengl32.NewProc("glPixelStoref")
)

// pname (DWORD), param1 (FLOAT)
r1, _, err := procglPixelStoref.Call(
	uintptr(pname),
	uintptr(math.Float32bits(param1)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

procedure glPixelStoref(
  pname: DWORD;   // DWORD
  param1: Single   // FLOAT
); stdcall;
  external 'OPENGL32.dll' name 'glPixelStoref';

result := DllCall("OPENGL32\glPixelStoref"
    , "UInt", pname   ; DWORD
    , "Float", param1   ; FLOAT
    , "Int")   ; return: void

●glPixelStoref(pname, param1) = DLL("OPENGL32.dll", "int glPixelStoref(dword, float)")
# 呼び出し: glPixelStoref(pname, param1)
# pname : DWORD -> "dword"
# param1 : FLOAT -> "float"
# 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)。