glPolygonOffset

関数

ポリゴンの深度値オフセットの係数を設定する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glPolygonOffset(
    FLOAT factor,
    FLOAT units
);

パラメーター

名前	型	方向
factor	FLOAT	in
units	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 glPolygonOffset(
    FLOAT factor,
    FLOAT units
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glPolygonOffset(
    float factor,   // FLOAT
    float units   // FLOAT
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glPolygonOffset(
    factor As Single,   ' FLOAT
    units As Single   ' FLOAT
)
End Sub

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

import ctypes
from ctypes import wintypes

glPolygonOffset = ctypes.windll.opengl32.glPolygonOffset
glPolygonOffset.restype = None
glPolygonOffset.argtypes = [
    ctypes.c_float,  # factor : FLOAT
    ctypes.c_float,  # units : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glPolygonOffset = Fiddle::Function.new(
  lib['glPolygonOffset'],
  [
    Fiddle::TYPE_FLOAT,  # factor : FLOAT
    Fiddle::TYPE_FLOAT,  # units : FLOAT
  ],
  Fiddle::TYPE_VOID)

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

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glPolygonOffset(float factor, float units);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glPolygonOffset' -Namespace Win32 -PassThru
# $api::glPolygonOffset(factor, units)

#uselib "OPENGL32.dll"
#func global glPolygonOffset "glPolygonOffset" float, float
; glPolygonOffset factor, units
; factor : FLOAT -> "float"
; units : FLOAT -> "float"

#uselib "OPENGL32.dll"
#func global glPolygonOffset "glPolygonOffset" float, float
; glPolygonOffset factor, units
; factor : FLOAT -> "float"
; units : FLOAT -> "float"

; void glPolygonOffset(FLOAT factor, FLOAT units)
#uselib "OPENGL32.dll"
#func global glPolygonOffset "glPolygonOffset" float, float
; glPolygonOffset factor, units
; factor : FLOAT -> "float"
; units : FLOAT -> "float"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglPolygonOffset = opengl32.NewProc("glPolygonOffset")
)

// factor (FLOAT), units (FLOAT)
r1, _, err := procglPolygonOffset.Call(
	uintptr(math.Float32bits(factor)),
	uintptr(math.Float32bits(units)),
)
_ = 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 glPolygonOffset(
  factor: Single;   // FLOAT
  units: Single   // FLOAT
); stdcall;
  external 'OPENGL32.dll' name 'glPolygonOffset';

result := DllCall("OPENGL32\glPolygonOffset"
    , "Float", factor   ; FLOAT
    , "Float", units   ; FLOAT
    , "Int")   ; return: void

●glPolygonOffset(factor, units) = DLL("OPENGL32.dll", "int glPolygonOffset(float, float)")
# 呼び出し: glPolygonOffset(factor, units)
# factor : FLOAT -> "float"
# units : 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)。