d3d9.dllLockBuffer
Microsoft DirectX 9.0 SDK Update (October 2004)

ID3DXPRTBuffer::LockBuffer Method


Locks a range of vertex or texel sample data and obtains a pointer to the location in buffer memory.

Syntax

HRESULT LockBuffer(      

    UINT Start,     UINT NumSamples,     FLOAT **ppData );

Parameters

Start
[in] Index of the sample of vertex or texel data.
NumSamples
[in] Number of vertices (or texels) sampled.
ppData
[out] Pointer to the location in memory where the Start sample begins.

Return Value

If the method succeeds, the return value is S_OK.

If the method fails, the following value will be returned.

D3DERR_INVALIDCALLThe method call is invalid. For example, a method's parameter may have an invalid value.




© 2004 Microsoft Corporation. All rights reserved.
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