glGetPixelMapfv

関数

ピクセル転送用の単精度マッピングテーブルを取得する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glGetPixelMapfv(
    DWORD map,
    FLOAT* values
);

パラメーター

名前	型	方向
map	DWORD	in
values	FLOAT*	inout

戻り値の型: void

各言語での呼び出し定義

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

void glGetPixelMapfv(
    DWORD map,
    FLOAT* values
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glGetPixelMapfv(
    uint map,   // DWORD
    ref float values   // FLOAT* in/out
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glGetPixelMapfv(
    map As UInteger,   ' DWORD
    ByRef values As Single   ' FLOAT* in/out
)
End Sub

' map : DWORD
' values : FLOAT* in/out
Declare PtrSafe Sub glGetPixelMapfv Lib "opengl32" ( _
    ByVal map As Long, _
    ByRef values As Single)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glGetPixelMapfv = ctypes.windll.opengl32.glGetPixelMapfv
glGetPixelMapfv.restype = None
glGetPixelMapfv.argtypes = [
    wintypes.DWORD,  # map : DWORD
    ctypes.POINTER(ctypes.c_float),  # values : FLOAT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glGetPixelMapfv = Fiddle::Function.new(
  lib['glGetPixelMapfv'],
  [
    -Fiddle::TYPE_INT,  # map : DWORD
    Fiddle::TYPE_VOIDP,  # values : FLOAT* in/out
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glGetPixelMapfv(
        map: u32,  // DWORD
        values: *mut f32  // FLOAT* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glGetPixelMapfv(uint map, ref float values);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glGetPixelMapfv' -Namespace Win32 -PassThru
# $api::glGetPixelMapfv(map, values)

#uselib "OPENGL32.dll"
#func global glGetPixelMapfv "glGetPixelMapfv" sptr, sptr
; glGetPixelMapfv map, varptr(values)
; map : DWORD -> "sptr"
; values : FLOAT* in/out -> "sptr"

出力引数:

#uselib "OPENGL32.dll"
#func global glGetPixelMapfv "glGetPixelMapfv" int, var
; glGetPixelMapfv map, values
; map : DWORD -> "int"
; values : FLOAT* in/out -> "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。#uselib "OPENGL32.dll"
#func global glGetPixelMapfv "glGetPixelMapfv" int, sptr
; glGetPixelMapfv map, varptr(values)
; map : DWORD -> "int"
; values : FLOAT* in/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:

; void glGetPixelMapfv(DWORD map, FLOAT* values)
#uselib "OPENGL32.dll"
#func global glGetPixelMapfv "glGetPixelMapfv" int, var
; glGetPixelMapfv map, values
; map : DWORD -> "int"
; values : FLOAT* in/out -> "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。; void glGetPixelMapfv(DWORD map, FLOAT* values)
#uselib "OPENGL32.dll"
#func global glGetPixelMapfv "glGetPixelMapfv" int, intptr
; glGetPixelMapfv map, varptr(values)
; map : DWORD -> "int"
; values : FLOAT* in/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 (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglGetPixelMapfv = opengl32.NewProc("glGetPixelMapfv")
)

// map (DWORD), values (FLOAT* in/out)
r1, _, err := procglGetPixelMapfv.Call(
	uintptr(map),
	uintptr(values),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glGetPixelMapfv(
  map: DWORD;   // DWORD
  values: Pointer   // FLOAT* in/out
); stdcall;
  external 'OPENGL32.dll' name 'glGetPixelMapfv';

result := DllCall("OPENGL32\glGetPixelMapfv"
    , "UInt", map   ; DWORD
    , "Ptr", values   ; FLOAT* in/out
    , "Int")   ; return: void

●glGetPixelMapfv(map, values) = DLL("OPENGL32.dll", "int glGetPixelMapfv(dword, void*)")
# 呼び出し: glGetPixelMapfv(map, values)
# map : DWORD -> "dword"
# values : FLOAT* in/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)。