Partager via

IDirect3D8::CheckDepthStencilMatch

  • Article

This method determines whether a depth-stencil format is compatible with a render target format in a particular display mode.

HRESULT CheckDepthStencilMatch(
  UINT Adapter,
  D3DDEVTYPE DeviceType,
  D3DFORMAT AdapterFormat,
  D3DFORMAT RenderTargetFormat,
  D3DFORMAT DepthStencilFormat
);

Parameters

  • Adapter
    [in] Ordinal number denoting the display adapter to query. D3DADAPTER_DEFAULT is always the primary display adapter.
  • DeviceType
    [in] Member of the D3DDEVTYPE enumerated type, identifying the device type.
  • AdapterFormat
    [in] Member of the D3DFORMAT enumerated type, identifying the format of the display mode into which the adapter will be placed.
  • RenderTargetFormat
    [in] Member of the D3DFORMAT enumerated type, identifying the format of the render target surface to be tested.
  • DepthStencilFormat
    [in] Member of the D3DFORMAT enumerated type, identifying the format of the depth-stencil surface to be tested.

Return Values

If the depth-stencil format is compatible with the render target format in the display mode, this method returns D3D_OK.

D3DERR_INVALIDCALL can be returned if one or more of the parameters are invalid. If a depth-stencil format is not compatible with the render target in the display mode, then this method returns D3DERR_NOTAVAILABLE.

Remarks

This method is provided to enable applications to work with hardware requiring that certain depth formats can only work with certain render target formats.

The following code fragment shows how you could use CheckDeviceFormat to validate a depth stencil format.

BOOL IsDepthFormatOk( D3DFORMAT DepthFormat, D3DFORMAT AdapterFormat,
                      D3DFORMAT BackBufferFormat ) {
    // Verify that the depth format exists.
    HRESULT hr = pD3D->CheckDeviceFormat( D3DADAPTER_DEFAULT,
                                          D3DDEVTYPE_HAL,
                                          AdapterFormat,
                                          D3DUSAGE_DEPTHSTENCIL,
                                          D3DRTYPE_SURFACE,
                                          DepthFormat);

    if( FAILED( hr ) ) return FALSE;

    // Verify that the depth format is compatible.
    hr = pD3D->CheckDepthStencilMatch( D3DADAPTER_DEFAULT,
                                       D3DDEVTYPE_HAL,
                                       AdapterFormat,
                                       BackBufferFormat,
                                       DepthFormat);
    return SUCCEEDED( hr );
}

The preceding call will return FALSE if DepthFormat cannot be used in conjunction with AdapterFormat and BackBufferFormat.

Requirements

OS Versions: Windows CE .NET 4.0 and later.
Header: D3d8.h.
Link Library: D3d8.lib.

See Also

D3DDEVTYPE | D3DFORMAT | IDirect3D8

 Last updated on Thursday, April 08, 2004

© 1992-2003 Microsoft Corporation. All rights reserved.