LightTheta
Keywords: LightTheta, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> LightTheta - 3D API light theta

> ## Usage

> LightTheta[i] = float(theta)

> ## Valid Enumerants

> theta: floating point value

> ## Description

> Specify the angle in radians of a spotlight's inner cone. See the Theta member of the D3DLIGHT9 argument to IDirect3DDevice9::SetLight method.

> The standard reset callback sets the LightTheta[i] state to float(0).

> ## Opengl Functionality Requirements

> Not applicable.

> ## Direct3D Functionality Requirements

> DirectX 9

> ## See Also

> LightAmbient, LightAttenuation0, LightAttenuation1, LightAttenuation2, LightConstantAttenuation, LightDiffuse, LightDirection, LightEnable, LightFalloff, LightLinearAttenuation, LightModelAmbient, LightModelColorControl, LightModelLocalViewerEnable, LightModelTwoSideEnable, LightPhi, LightPosition, LightQuadraticAttenuation, LightRange, LightSpecular, LightSpotCutoff, LightSpotDirection, LightSpotExponent, LightType, LightingEnable