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D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS

構造体
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サイズx64: 20 バイト / x86: 20 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
IndexCountPerInstanceDWORD4+0+01インスタンスあたりに描画するインデックス数。
InstanceCountDWORD4+4+4描画するインスタンスの数。
StartIndexLocationDWORD4+8+8インデックスバッファから読み始める最初のインデックス位置。
BaseVertexLocationINT4+12+12各インデックスに加算する頂点バッファのベースオフセット(符号付き)。
StartInstanceLocationDWORD4+16+16描画を開始する最初のインスタンスインデックス。

各言語での定義

#include <windows.h>

// D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS  (x64 20 / x86 20 バイト)
typedef struct D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS {
    DWORD IndexCountPerInstance;
    DWORD InstanceCount;
    DWORD StartIndexLocation;
    INT BaseVertexLocation;
    DWORD StartInstanceLocation;
} D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS
{
    public uint IndexCountPerInstance;
    public uint InstanceCount;
    public uint StartIndexLocation;
    public int BaseVertexLocation;
    public uint StartInstanceLocation;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS
    Public IndexCountPerInstance As UInteger
    Public InstanceCount As UInteger
    Public StartIndexLocation As UInteger
    Public BaseVertexLocation As Integer
    Public StartInstanceLocation As UInteger
End Structure
import ctypes
from ctypes import wintypes

class D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS(ctypes.Structure):
    _fields_ = [
        ("IndexCountPerInstance", wintypes.DWORD),
        ("InstanceCount", wintypes.DWORD),
        ("StartIndexLocation", wintypes.DWORD),
        ("BaseVertexLocation", ctypes.c_int),
        ("StartInstanceLocation", wintypes.DWORD),
    ]
#[repr(C)]
pub struct D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS {
    pub IndexCountPerInstance: u32,
    pub InstanceCount: u32,
    pub StartIndexLocation: u32,
    pub BaseVertexLocation: i32,
    pub StartInstanceLocation: u32,
}
import "golang.org/x/sys/windows"

type D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS struct {
	IndexCountPerInstance uint32
	InstanceCount uint32
	StartIndexLocation uint32
	BaseVertexLocation int32
	StartInstanceLocation uint32
}
type
  D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS = record
    IndexCountPerInstance: DWORD;
    InstanceCount: DWORD;
    StartIndexLocation: DWORD;
    BaseVertexLocation: Integer;
    StartInstanceLocation: DWORD;
  end;
const D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS = extern struct {
    IndexCountPerInstance: u32,
    InstanceCount: u32,
    StartIndexLocation: u32,
    BaseVertexLocation: i32,
    StartInstanceLocation: u32,
};
type
  D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS {.bycopy.} = object
    IndexCountPerInstance: uint32
    InstanceCount: uint32
    StartIndexLocation: uint32
    BaseVertexLocation: int32
    StartInstanceLocation: uint32
struct D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS
{
    uint IndexCountPerInstance;
    uint InstanceCount;
    uint StartIndexLocation;
    int BaseVertexLocation;
    uint StartInstanceLocation;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS サイズ: 20 バイト(x64)
dim st, 5    ; 4byte整数×5(構造体サイズ 20 / 4 切り上げ)
; IndexCountPerInstance : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; InstanceCount : DWORD (+4, 4byte)  st.1 = 値  /  値 = st.1   (lpoke/lpeek も可)
; StartIndexLocation : DWORD (+8, 4byte)  st.2 = 値  /  値 = st.2   (lpoke/lpeek も可)
; BaseVertexLocation : INT (+12, 4byte)  st.3 = 値  /  値 = st.3   (lpoke/lpeek も可)
; StartInstanceLocation : DWORD (+16, 4byte)  st.4 = 値  /  値 = st.4   (lpoke/lpeek も可)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
#defstruct global D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS
    #field int IndexCountPerInstance
    #field int InstanceCount
    #field int StartIndexLocation
    #field int BaseVertexLocation
    #field int StartInstanceLocation
#endstruct

stdim st, D3D11_DRAW_INDEXED_INSTANCED_INDIRECT_ARGS        ; NSTRUCT 変数を確保
st->IndexCountPerInstance = 100
mes "IndexCountPerInstance=" + st->IndexCountPerInstance