D3DCMPFUNC

The D3DCMPFUNC enumerated type defines the supported compare functions for the D3DRENDERSTATE_ZFUNC, D3DRENDERSTATE_ALPHAFUNC, and D3DRENDERSTATE_STENCILFUNC render states.

typedef enum _D3DCMPFUNC { 
    D3DCMP_NEVER        = 1, 
    D3DCMP_LESS         = 2, 
    D3DCMP_EQUAL        = 3, 
    D3DCMP_LESSEQUAL    = 4, 
    D3DCMP_GREATER      = 5, 
    D3DCMP_NOTEQUAL     = 6, 
    D3DCMP_GREATEREQUAL = 7, 
    D3DCMP_ALWAYS       = 8, 
    D3DCMP_FORCE_DWORD   = 0x7fffffff, 
} D3DCMPFUNC; 

D3DCMP_NEVER

Always fail the test.

D3DCMP_LESS

Accept the new pixel if its value is less than the value of the current pixel.

D3DCMP_EQUAL

Accept the new pixel if its value equals the value of the current pixel.

D3DCMP_LESSEQUAL

Accept the new pixel if its value is less than or equal to the value of the current pixel.

D3DCMP_GREATER

Accept the new pixel if its value is greater than the value of the current pixel.

D3DCMP_NOTEQUAL

Accept the new pixel if its value does not equal the value of the current pixel.

D3DCMP_GREATEREQUAL

Accept the new pixel if its value is greater than or equal to the value of the current pixel.

D3DCMP_ALWAYS

Always pass the test.

D3DCMP_FORCE_DWORD

Forces this enumeration to compile to 32 bits in size. This value is not used.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Version: Requires DirectX 2.0 or later.
  Header: Declared in d3dtypes.h.