HP b2600

L
glLight
Chapter 10
250
glLight
glLightf, glLighti, glLightfv, glLightiv: set light source parameters.
C Specification
void glLightf(
GLenum light,
GLenum pname,
GLfloat param)
void glLighti(
GLenum light,
GLenum pname,
GLint param)
void glLightfv(
GLenum light,
GLenum pname,
const GLfloat *params)
void glLightiv(
GLenum light,
GLenum pname,
const GLint *params)
Parameters
light Specifies a light. The number of lights depends on the implementation,
but at least eight lights are supported. They are identified by symbolic
names of the form GL_LIGHTi where 0 ≥ i < GL_MAX_LIGHTS.
pname Specifies a single-valued light source parameter for light.
GL_SPOT_EXPONENT, GL_SPOT_CUTOFF,
GL_CONSTANT_ATTENUATION, GL_LINEAR_ATTENUATION,
and GL_QUADRATIC_ATTENUATION are accepted.
param Specifies the value that parameter pname of light source light will be
set to.
light Specifies a light. The number of lights depends on the implementation,
but at least eight lights are supported. They are identified by symbolic
names of the form GL_LIGHTi where 0 ≥i < GL_MAX_LIGHTS.
pname Specifies a light source parameter for light. GL_AMBIENT,
GL_DIFFUSE, GL_SPECULAR, GL_POSITION, GL_SPOT_CUTOFF,
GL_SPOT_DIRECTION, GL_SPOT_EXPONENT,
GL_CONSTANT_ATTENUATION,GL_LINEAR_ATTENUATION,and
GL_QUADRATIC_ATTENUATION are accepted.
params Specifies a pointer to the value or values that parameter pname of
light source light will be set to.