D3DMFOGMODE (Windows Embedded CE 6.0)

1/6/2010

This enumeration provides values that identify fog equations used in various render states. Both vertex and pixel fog modes support all of these fog equations.

Syntax

typedef enum _D3DMFOGMODE {
  D3DMFOG_NONE        = 0,
  D3DMFOG_EXP         = 1,
  D3DMFOG_EXP2        = 2,
  D3DMFOG_LINEAR      = 3,
  D3DMFOG_FORCE_ULONG = 0x7fffffff,
} D3DMFOGMODE;

Elements

• D3DMFOG_NONE
  Identifies that fogging modes are disabled.

• D3DMFOG_EXP
  Identifies a fog model where the fog effect, F, intensifies according to the following equation.

  F = 1/e^(d*density)
  

  In this equation, e is the base of the natural logarithm, and d is distance. The value for density is the value of the D3DMRS_FOGDENSITY render state. For more information, see D3DMRENDERSTATETYPE.

• D3DMFOG_EXP2
  Identifies a fog model where the fog effect, F, intensifies according to the following equation.

  F = 1/e^(d*density)<SUP>2</SUP>
  

• D3DMFOG_LINEAR
  Identifies a fog model where the fog effect, F, intensifies linearly between the start and end points according to the following equation.

  F = (end - d)/(end - start)
  

  The values for start and end are the values of the D3DMRS_FOGSTART and D3DMRS_FOGEND render states.

• D3DMFOG_FORCE_ULONG
  Forces the compiler to interpret the enumeration as a ULONG value. This value is not used directly in Direct3D Mobile programming.

Requirements

See Also

Reference

Direct3D Mobile Enumerations
D3DMRENDERSTATETYPE