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D3D11_DRAW_INSTANCED_INDIRECT_ARGS

構造体
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サイズx64: 16 バイト / x86: 16 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
VertexCountPerInstanceDWORD4+0+01インスタンスあたりに描画する頂点数。
InstanceCountDWORD4+4+4描画するインスタンスの数。
StartVertexLocationDWORD4+8+8頂点バッファから読み始める最初の頂点インデックス。
StartInstanceLocationDWORD4+12+12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_INSTANCED_INDIRECT_ARGS  (x64 16 / x86 16 バイト)
typedef struct D3D11_DRAW_INSTANCED_INDIRECT_ARGS {
    DWORD VertexCountPerInstance;
    DWORD InstanceCount;
    DWORD StartVertexLocation;
    DWORD StartInstanceLocation;
} D3D11_DRAW_INSTANCED_INDIRECT_ARGS;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct D3D11_DRAW_INSTANCED_INDIRECT_ARGS
{
    public uint VertexCountPerInstance;
    public uint InstanceCount;
    public uint StartVertexLocation;
    public uint StartInstanceLocation;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure D3D11_DRAW_INSTANCED_INDIRECT_ARGS
    Public VertexCountPerInstance As UInteger
    Public InstanceCount As UInteger
    Public StartVertexLocation As UInteger
    Public StartInstanceLocation As UInteger
End Structure
import ctypes
from ctypes import wintypes

class D3D11_DRAW_INSTANCED_INDIRECT_ARGS(ctypes.Structure):
    _fields_ = [
        ("VertexCountPerInstance", wintypes.DWORD),
        ("InstanceCount", wintypes.DWORD),
        ("StartVertexLocation", wintypes.DWORD),
        ("StartInstanceLocation", wintypes.DWORD),
    ]
#[repr(C)]
pub struct D3D11_DRAW_INSTANCED_INDIRECT_ARGS {
    pub VertexCountPerInstance: u32,
    pub InstanceCount: u32,
    pub StartVertexLocation: u32,
    pub StartInstanceLocation: u32,
}
import "golang.org/x/sys/windows"

type D3D11_DRAW_INSTANCED_INDIRECT_ARGS struct {
	VertexCountPerInstance uint32
	InstanceCount uint32
	StartVertexLocation uint32
	StartInstanceLocation uint32
}
type
  D3D11_DRAW_INSTANCED_INDIRECT_ARGS = record
    VertexCountPerInstance: DWORD;
    InstanceCount: DWORD;
    StartVertexLocation: DWORD;
    StartInstanceLocation: DWORD;
  end;
const D3D11_DRAW_INSTANCED_INDIRECT_ARGS = extern struct {
    VertexCountPerInstance: u32,
    InstanceCount: u32,
    StartVertexLocation: u32,
    StartInstanceLocation: u32,
};
type
  D3D11_DRAW_INSTANCED_INDIRECT_ARGS {.bycopy.} = object
    VertexCountPerInstance: uint32
    InstanceCount: uint32
    StartVertexLocation: uint32
    StartInstanceLocation: uint32
struct D3D11_DRAW_INSTANCED_INDIRECT_ARGS
{
    uint VertexCountPerInstance;
    uint InstanceCount;
    uint StartVertexLocation;
    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_INSTANCED_INDIRECT_ARGS サイズ: 16 バイト(x64)
dim st, 4    ; 4byte整数×4(構造体サイズ 16 / 4 切り上げ)
; VertexCountPerInstance : 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)
; StartVertexLocation : DWORD (+8, 4byte)  st.2 = 値  /  値 = st.2   (lpoke/lpeek も可)
; StartInstanceLocation : DWORD (+12, 4byte)  st.3 = 値  /  値 = st.3   (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_INSTANCED_INDIRECT_ARGS
    #field int VertexCountPerInstance
    #field int InstanceCount
    #field int StartVertexLocation
    #field int StartInstanceLocation
#endstruct

stdim st, D3D11_DRAW_INSTANCED_INDIRECT_ARGS        ; NSTRUCT 変数を確保
st->VertexCountPerInstance = 100
mes "VertexCountPerInstance=" + st->VertexCountPerInstance