D3DMTEXTUREFILTERTYPE (Windows Embedded CE 6.0)

  • Article

1/6/2010

This enumeration provides values for the texture stage states used for texture filtering and for mipmaps. The applicable texture stage states are D3DMTSS_MAGFILTER, D3DMTSS_MINFILTER, and D3DMTSS_MIPFILTER (see D3DMTEXTURESTAGESTATETYPE).

Syntax

typedef enum _D3DMTEXTUREFILTERTYPE {
  D3DMTEXF_NONE        = 0,
  D3DMTEXF_POINT       = 1,
  D3DMTEXF_LINEAR      = 2,
  D3DMTEXF_ANISOTROPIC = 3,
  D3DMTEXF_FORCE_ULONG = 0x7fffffff,
} D3DMTEXTUREFILTERTYPE;

Elements

  • D3DMTEXF_NONE
    Identifies that filtering is disabled. This value is only valid for D3DMTSS_MIPFILTER.
  • D3DMTEXF_POINT
    Identifies that the color value at the nearest texel corresponding to the texture coordinate is used.
  • D3DMTEXF_LINEAR
    Identifies that the nearest texel — plus the texels immediately above, below, left, and right of the nearest texel — are used in a weighted average.
  • D3DMTEXF_ANISOTROPIC
    Identifies that anisotropic filtering is used. Anisotropic filtering is a variant of linear filtering that compensates for the orientation of the primitive verses the orientation of screen space. Anisotropic filtering uses a constant, which is the maximum allowed anisotropy. This unsigned integer constant is set on a per stage basis by the texture stage state D3DMTSS_MAXANISOTROPY. The value of 1 causes all computations to be disabled and the results are identical to linear filtering.
  • D3DMTEXF_FORCE_ULONG
    Forces the compiler to interpret the enumeration as a ULONG value. This value is not used directly in Direct3D Mobile programming.

Remarks

Set a texture stage's magnification filter by calling the IDirect3DMobileDevice::SetTextureStageState method with the D3DMTSS_MAGFILTER value as the second parameter and one member of this enumeration as the third parameter.

Set a texture stage's minification filter by calling IDirect3DMobileDevice::SetTextureStageState with the D3DMTSS_MINFILTER value as the second parameter and one member of this enumeration as the third parameter.

Set the texture filter to use between mipmap levels by calling IDirect3DMobileDevice::SetTextureStageState with the D3DMTSS_MIPFILTER value as the second parameter and one member of this enumeration as the third parameter.

Requirements

Header d3dmtypes.h
Windows Embedded CE Windows CE 5.0 and later

See Also

Reference

Direct3D Mobile Enumerations
D3DMTEXTURESTAGESTATETYPE
IDirect3DMobileDevice::SetTextureStageState