Skip to content

Latest commit

 

History

History
97 lines (61 loc) · 1.86 KB

id3dxpatchmesh--lockindexbuffer.md

File metadata and controls

97 lines (61 loc) · 1.86 KB
Raw
description ms.assetid title ms.topic ms.date topic_type api_name api_type api_location
Lock the index buffer.
b68aff75-9ba6-4088-b35f-f56d700d1aff
ID3DXPatchMesh::LockIndexBuffer method (D3DX9Mesh.h)
reference
05/31/2018
APIRef
kbSyntax
ID3DXPatchMesh.LockIndexBuffer
COM
d3dx9.lib
d3dx9.dll

ID3DXPatchMesh::LockIndexBuffer method

Lock the index buffer.

Syntax

HRESULT LockIndexBuffer(
  [in]          DWORD  flags,
  [out, retval] LPVOID *ppData
);

Parameters

flags [in]

Type: DWORD

Combination of zero or more locking flags that describe the type of lock to perform. For this method, the valid flags are:

  • D3DLOCK_DISCARD
  • D3DLOCK_NO_DIRTY_UPDATE
  • D3DLOCK_NOSYSLOCK
  • D3DLOCK_READONLY

For a description of the flags, see D3DLOCK.

ppData [out, retval]

Type: LPVOID*

VOID* pointer to a memory buffer containing the returned index data.

Return value

Type: HRESULT

If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, E_OUTOFMEMORY.

Remarks

The index buffer is usually locked, written to, and then unlocked for reading. Patch mesh index buffers are 16-bit buffers.

Requirements

Requirement Value
Header
D3DX9Mesh.h
Library
D3dx9.lib

See also

ID3DXPatchMesh

D3DXCreatePatchMesh