glGetTexParameterfv, glGetTexParameteriv

The glGetTexParameterfv and glGetTexParameteriv functions return texture parameter values.

void glGetTexParameterfv(
  GLenum target,
  GLenum pname,
  GLfloat *params
);

void glGetTexParameteriv(
  GLenum target,
  GLenum pname,
  GLint *params
);

Parameters

target
The symbolic name of the target texture. GL_TEXTURE_1D and GL_TEXTURE_2D are accepted.
pname
The symbolic name of a texture parameter. The following values are accepted:
Value Meaning
GL_TEXTURE_MAG_FILTER Returns the single-valued texture magnification filter, a symbolic constant.
GL_TEXTURE_MIN_FILTER Returns the single-valued texture minification filter, a symbolic constant.
GL_TEXTURE_WRAP_S Returns the single-valued wrapping function for texture coordinate s, a symbolic constant.
GL_TEXTURE_WRAP_T Returns the single-valued wrapping function for texture coordinate t, a symbolic constant.
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.
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.

params
Returns the texture parameters.

Remarks

The glGetTexParameter function returns in params the value or values of the texture parameter specified as pname. The target parameter defines the target textureeither GL_TEXTURE_1D or GL_TEXTURE_2Dto specify one- or two-dimensional texturing. The pname parameter accepts the same symbols as glTexParameter, with the same interpretations.

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

Error Codes

The following are the error codes generated and their conditions.

Error code Condition
GL_INVALID_ENUM target or pname was not an accepted value.
GL_INVALID_OPERATION glGetTexParameter was called between a call to glBegin and the corresponding call to glEnd.

Requirements

  Windows NT/2000: Requires Windows NT 3.5 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in Gl.h.
  Library: Use Opengl32.lib.

See Also

glBegin, glEnd, glTexParameter


  

Community Additions

Show: