glGetTexGenfv

関数

テクスチャ座標生成の単精度パラメータを取得する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glGetTexGenfv(
    DWORD coord,
    DWORD pname,
    FLOAT* params
);

パラメーター

名前	型	方向
coord	DWORD	in
pname	DWORD	in
params	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 glGetTexGenfv(
    DWORD coord,
    DWORD pname,
    FLOAT* params
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glGetTexGenfv(
    uint coord,   // DWORD
    uint pname,   // DWORD
    ref float params   // FLOAT* in/out
);

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

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

import ctypes
from ctypes import wintypes

glGetTexGenfv = ctypes.windll.opengl32.glGetTexGenfv
glGetTexGenfv.restype = None
glGetTexGenfv.argtypes = [
    wintypes.DWORD,  # coord : DWORD
    wintypes.DWORD,  # pname : DWORD
    ctypes.POINTER(ctypes.c_float),  # params : FLOAT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glGetTexGenfv = Fiddle::Function.new(
  lib['glGetTexGenfv'],
  [
    -Fiddle::TYPE_INT,  # coord : DWORD
    -Fiddle::TYPE_INT,  # pname : DWORD
    Fiddle::TYPE_VOIDP,  # params : FLOAT* in/out
  ],
  Fiddle::TYPE_VOID)

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

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glGetTexGenfv(uint coord, uint pname, ref float params);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glGetTexGenfv' -Namespace Win32 -PassThru
# $api::glGetTexGenfv(coord, pname, params)

#uselib "OPENGL32.dll"
#func global glGetTexGenfv "glGetTexGenfv" sptr, sptr, sptr
; glGetTexGenfv coord, pname, varptr(params)
; coord : DWORD -> "sptr"
; pname : DWORD -> "sptr"
; params : FLOAT* in/out -> "sptr"

出力引数:

#uselib "OPENGL32.dll"
#func global glGetTexGenfv "glGetTexGenfv" int, int, var
; glGetTexGenfv coord, pname, params
; coord : DWORD -> "int"
; pname : DWORD -> "int"
; params : 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 glGetTexGenfv "glGetTexGenfv" int, int, sptr
; glGetTexGenfv coord, pname, varptr(params)
; coord : DWORD -> "int"
; pname : DWORD -> "int"
; params : 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 glGetTexGenfv(DWORD coord, DWORD pname, FLOAT* params)
#uselib "OPENGL32.dll"
#func global glGetTexGenfv "glGetTexGenfv" int, int, var
; glGetTexGenfv coord, pname, params
; coord : DWORD -> "int"
; pname : DWORD -> "int"
; params : 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 glGetTexGenfv(DWORD coord, DWORD pname, FLOAT* params)
#uselib "OPENGL32.dll"
#func global glGetTexGenfv "glGetTexGenfv" int, int, intptr
; glGetTexGenfv coord, pname, varptr(params)
; coord : DWORD -> "int"
; pname : DWORD -> "int"
; params : 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")
	procglGetTexGenfv = opengl32.NewProc("glGetTexGenfv")
)

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

procedure glGetTexGenfv(
  coord: DWORD;   // DWORD
  pname: DWORD;   // DWORD
  params: Pointer   // FLOAT* in/out
); stdcall;
  external 'OPENGL32.dll' name 'glGetTexGenfv';

result := DllCall("OPENGL32\glGetTexGenfv"
    , "UInt", coord   ; DWORD
    , "UInt", pname   ; DWORD
    , "Ptr", params   ; FLOAT* in/out
    , "Int")   ; return: void

●glGetTexGenfv(coord, pname, params) = DLL("OPENGL32.dll", "int glGetTexGenfv(dword, dword, void*)")
# 呼び出し: glGetTexGenfv(coord, pname, params)
# coord : DWORD -> "dword"
# pname : DWORD -> "dword"
# params : 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)。