glGetTexParameter

Name

glGetTexParameter — return texture parameter values

C Specification

`void fsfuncglGetTexParameterfv(`	GLenum `target`,
	GLenum `pname`,
	GLfloat * `params)`;

`void fsfuncglGetTexParameteriv(`	GLenum `target`,
	GLenum `pname`,
	GLint * `params)`;

`void fsfuncglGetTexParameterxv(`	GLenum `target`,
	GLenum `pname`,
	GLfixed * `params)`;

Parameters

target: Specifies the target texture, which must be GL_TEXTURE_2D.
pname: Specifies the symbolic name of a texture parameter. Which can be one of the following: GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MAG_FILTER, GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, or GL_GENERATE_MIPMAP.
params: Returns texture parameters.

Description

glGetTexParameter returns in param the value of the texture parameter specified as pname. target defines the target texture, which must be GL_TEXTURE_2D which specifies two-dimensional texturing. pname accepts the same symbols as glTexParameter, with the same interpretations:

GL_TEXTURE_MIN_FILTER: Returns the single-valued texture minifying function, a symbolic constant, which can be one of the following: GL_NEAREST, GL_LINEAR, GL_NEAREST_MIPMAP_NEAREST, GL_LINEAR_MIPMAP_NEAREST, GL_NEAREST_MIPMAP_LINEAR, or GL_LINEAR_MIPMAP_LINEAR. The initial value is GL_NEAREST_MIPMAP_LINEAR.
GL_TEXTURE_MAG_FILTER: Returns the single-valued texture magnification function, a symbolic constant, which can be either GL_NEAREST or GL_LINEAR. The initial value is GL_LINEAR.
GL_TEXTURE_WRAP_S: Returns the single-valued wrapping function for texture coordinate s, a symbolic constant, which can be either: GL_CLAMP_TO_EDGE, or GL_REPEAT. The initial value is GL_REPEAT.
GL_TEXTURE_WRAP_T: Returns the single-valued wrapping function for texture coordinate t, a symbolic constant, which can be either: GL_CLAMP_TO_EDGE, or GL_REPEAT. The initial value is GL_REPEAT.
GL_GENERATE_MIPMAP: Returns a single boolean value indicating if automatic mipmap level updates are enabled. The initial value is GL_FALSE. See glTexParameter.

Notes

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

Errors

GL_INVALID_ENUM is generated if target or pname is not one of the accepted defined values.