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ID3D10Device::SOSetTargets method

Set the target output buffers for the StreamOutput stage, which enables/disables the pipeline to stream-out data.

Syntax


void SOSetTargets(
  [in]  UINT NumBuffers,
  [in]  ID3D10Buffer *const *ppSOTargets,
  [in]  const UINT *pOffsets
);

Parameters

NumBuffers [in]

Type: UINT

The number of buffer to bind to the device. A maximum of four output buffers can be set. If less than four are defined by the call, the remaining buffer slots are set to NULL. See Remarks.

ppSOTargets [in]

Type: ID3D10Buffer*

The array of output buffers (see ID3D10Buffer) to bind to the device. The buffers must have been created with the D3D10_BIND_STREAM_OUTPUT flag.

pOffsets [in]

Type: const UINT*

Array of offsets to the output buffers from ppSOTargets, one offset for each buffer. The offset values must be in bytes.

Return value

Returns nothing.

Remarks

Call ID3D10Device::SOSetTargets (before any draw calls) to stream data out; call SOSetTargets with NULL to stop streaming data out. For an example, see Exercise 01 from the GDC 2007 workshop, which sets the stream output rendertargets before calling draw methods in the RenderInstanceToStream function.

An offset of -1 will cause the stream output buffer to be appended, continuing after the last location written to the buffer in a previous stream output pass.

Calling this method using a buffer that is currently bound for writing will effectively bind NULL instead because a buffer cannot be bound as both an input and an output at the same time.

The Debug Layer will generate a warning whenever a resource is prevented from being bound simultaneously as an input and an output, but this will not prevent invalid data from being used by the runtime.

The method will not hold a reference to the interfaces passed in. For that reason, applications should be careful not to release an interface currently in use by the device.

Requirements

Header

D3D10.h

Library

D3D10.lib

See also

ID3D10Device Interface

 

 

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