D3DLIGHTTYPE

Defines the light type.

typedef enum D3DLIGHTTYPE
{
    D3DLIGHT_POINT = 1,
    D3DLIGHT_SPOT = 2,
    D3DLIGHT_DIRECTIONAL = 3,
    D3DLIGHT_FORCE_DWORD = 0x7fffffff,
} D3DLIGHTTYPE, *LPD3DLIGHTTYPE;

Constants

D3DLIGHT_POINT

Light is a point source. The light has a position in space and radiates light in all directions.

D3DLIGHT_SPOT

Light is a spotlight source. This light is like a point light, except that the illumination is limited to a cone. This light type has a direction and several other parameters that determine the shape of the cone it produces. For information about these parameters, see the D3DLIGHT9 structure.

D3DLIGHT_DIRECTIONAL

Light is a directional light source. This is equivalent to using a point light source at an infinite distance.

D3DLIGHT_FORCE_DWORD

Forces this enumeration to compile to 32 bits in size. Without this value, some compilers would allow this enumeration to compile to a size other than 32 bits. This value is not used.

Remarks

Directional lights are slightly faster than point light sources, but point lights look a little better. Spotlights offer interesting visual effects but are computationally time-consuming.

See Also

D3DLIGHT9