ID3D11Device::CheckMultisampleQualityLevels Method

Get the number of quality levels available during multisampling.

Syntax

public:
HRESULT CheckMultisampleQualityLevels(
         DXGI_FORMAT Format,
         UINT SampleCount,
         UINT *pNumQualityLevels
)

Parameters

Format
Type: DXGI_FORMAT

[in] The texture format. See DXGI_FORMAT.

SampleCount
Type: UINT

[in] The number of samples during multisampling.

pNumQualityLevels
Type: UINT *

[out] Number of quality levels supported by the adapter. See remarks.

Return value

Type: HRESULT

This method returns one of the following Direct3D 11 return codes.

Remarks

When multisampling a texture, the number of quality levels available for an adapter is dependent on the texture format used and the number of samples requested. The maximum number of quality levels is defined by D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT in D3D11.h. If this method returns 0, the format and sample count combination is not supported for the installed adapter.

Furthermore, the definition of a quality level is up to each hardware vendor to define, however no facility is provided by Direct3D to help discover this information.

Note that FEATURE_LEVEL_10_1 devices are required to support 4x MSAA for all render targets except R32G32B32A32 and R32G32B32. FEATURE_LEVEL_11_0 devices are required to support 4x MSAA for all render target formats, and 8x MSAA for all render target formats except R32G32B32A32 formats.

Requirements

Header: Declared in d3d11_x.h (d3d11.h on other Windows platforms).