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 |
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Header |
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Library |
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See also