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Man Pages


Manual Reference Pages  -  GLGETTEXPARAMETERIV (3)

NAME

glGetTexParameterfv, glGetTexParameteriv - return texture parameter values

CONTENTS

C Specification
Parameters
Description
Notes
Errors
See Also

C SPECIFICATION

void glGetTexParameterfv( GLenum target,

                        GLenum pname,
                        GLfloat *params )

void glGetTexParameteriv( GLenum target,

                        GLenum pname,
                        GLint *params )

PARAMETERS

target Specifies the symbolic name of the target texture. GL_TEXTURE_1D and GL_TEXTURE_2D are accepted.
pname Specifies the symbolic name of a texture parameter. GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, GL_TEXTURE_BORDER_COLOR, GL_TEXTURE_PRIORITY, and GL_TEXTURE_RESIDENT are accepted.
params Returns the texture parameters.

DESCRIPTION

glGetTexParameter returns in params the value or values of the texture parameter specified as pname. target defines the target texture, either GL_TEXTURE_1D or GL_TEXTURE_2D, to specify one- or two-dimensional texturing. pname accepts the same symbols as glTexParameter, with the same interpretations:
GL_TEXTURE_MAG_FILTER Returns the single-valued texture magnification filter, a symbolic constant. The initial value is GL_LINEAR.
GL_TEXTURE_MIN_FILTER Returns the single-valued texture minification filter, a symbolic constant. The initial value is GL_NEAREST_MIPMAP_LINEAR.
GL_TEXTURE_WRAP_S Returns the single-valued wrapping function for texture coordinate s, a symbolic constant. The initial value is GL_REPEAT.
GL_TEXTURE_WRAP_T Returns the single-valued wrapping function for texture coordinate t, a symbolic constant. The initial value is GL_REPEAT.
GL_TEXTURE_BORDER_COLOR Returns four integer or floating-point numbers that comprise the RGBA color of the texture border. Floating-point values are returned in the range [0, 1]. Integer values are returned as a linear mapping of the internal floating-point representation such that 1.0 maps to the most positive representable integer and -1.0 maps to the most negative representable integer. The initial value is (0, 0, 0, 0).
GL_TEXTURE_PRIORITY Returns the residence priority of the target texture (or the named texture bound to it). The initial value is 1. See glPrioritizeTextures.
GL_TEXTURE_RESIDENT Returns the residence status of the target texture. If the value returned in params is GL_TRUE, the texture is resident in texture memory. See glAreTexturesResident.

NOTES

GL_TEXTURE_PRIORITY and GL_TEXTURE_RESIDENT are only available if the GL version is 1.1 or greater.

If an error is generated, no change is made to the contents of params.

ERRORS

GL_INVALID_ENUM is generated if target or pname is not an accepted value.

GL_INVALID_OPERATION is generated if glGetTexParameter is executed between the execution of glBegin and the corresponding execution of glEnd.

SEE ALSO

glAreTexturesResident, glPrioritizeTextures, glTexParameter
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