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glTexEnv

Chapter 18

427

glTexEnv

glTexEnvf, glTexEnvi, glTexEnvfv, glTexEnviv: set texture environment

parameters.

C Speciﬁcation

void glTexEnvf(

GLenum target,

GLenum pname,

GLfloat param)

void glTexEnvi(

GLenum target,

GLenum pname,

GLint param)

void glTexEnvfv(

GLenum target,

GLenum pname,

const GLfloat *params)

void glTexEnviv(

GLenum target,

GLenum pname,

const GLint *params)

Parameters

target Speciﬁes a texture environment. Must be GL_TEXTURE_ENV.

pname (glTexEnvf and glTexEnvi)

Speciﬁes the symbolic name of a single-valued texture environment

parameter. Must be GL_TEXTURE_ENV_MODE.

pname (for glTexEnvfv and glTexEnviv)

Speciﬁes the symbolic name of a texture environment parameter.

Accepted values are GL_TEXTURE_ENV_MODE and

GL_TEXTURE_ENV_COLOR and

GL_TEXTURE_LIGHTING_MODE_hp.

param Speciﬁes a single symbolic constant, one of GL_MODULATE,

GL_DECAL, GL_BLEND, or GL_REPLACE. If pname is

GL_TEXTURE_LIGHTING_MODE_hp, speciﬁes a single symbolic

constant, either GL_TEXTURE_POST_SPECULAR_hp or

GL_TEXTURE_PRE_SPECULAR_hp.

params Speciﬁes a pointer to a parameter array that contains either a single

symbolic constant or an RGBA color.

HP b2600 Reference Guide

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