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GLGETSAMPLERPARAMETE(3G)	 OpenGL Manual	      GLGETSAMPLERPARAMETE(3G)

NAME
       glGetSamplerParameter - return sampler parameter values

C SPECIFICATION
       void glGetSamplerParameterfv(GLuint sampler, GLenum pname,
				    GLfloat * params);

       void glGetSamplerParameteriv(GLuint sampler, GLenum pname,
				    GLint * params);

       void glGetSamplerParameterIiv(GLuint sampler, GLenum pname,
				     GLint * params);

       void glGetSamplerParameterIuiv(GLuint sampler, GLenum pname,
				      GLuint * params);

PARAMETERS
       sampler
	   Specifies name of the sampler object from which to retrieve
	   parameters.

       pname
	   Specifies the symbolic name of a sampler parameter.
	   GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MIN_LOD,
	   GL_TEXTURE_MAX_LOD, GL_TEXTURE_LOD_BIAS, GL_TEXTURE_WRAP_S,
	   GL_TEXTURE_WRAP_T, GL_TEXTURE_WRAP_R, GL_TEXTURE_BORDER_COLOR,
	   GL_TEXTURE_COMPARE_MODE, and GL_TEXTURE_COMPARE_FUNC are accepted.

       params
	   Returns the sampler parameters.

DESCRIPTION
       glGetSamplerParameter returns in params the value or values of the
       sampler parameter specified as pname.  sampler defines the target
       sampler, and must be the name of an existing sampler object, returned
       from a previous call to glGenSamplers().	 pname accepts the same
       symbols as glSamplerParameter(), 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_MIN_LOD
	   Returns the single-valued texture minimum level-of-detail value.
	   The initial value is -1000.

       GL_TEXTURE_MAX_LOD
	   Returns the single-valued texture maximum level-of-detail value.
	   The initial value is 1000.

       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_WRAP_R
	   Returns the single-valued wrapping function for texture coordinate
	   r, 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_COMPARE_MODE
	   Returns a single-valued texture comparison mode, a symbolic
	   constant. The initial value is GL_NONE. See glSamplerParameter().

       GL_TEXTURE_COMPARE_FUNC
	   Returns a single-valued texture comparison function, a symbolic
	   constant. The initial value is GL_LEQUAL. See glSamplerParameter().

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

       glGetSamplerParameter is available only if the GL version is 3.3 or
       higher.

ERRORS
       GL_INVALID_VALUE is generated if sampler is not the name of a sampler
       object returned from a previous call to glGenSamplers().

       GL_INVALID_ENUM is generated if pname is not an accepted value.

SEE ALSO
       glSamplerParameter(), glGenSamplers(), glDeleteSamplers(),
       glSamplerParameter()

COPYRIGHT
       Copyright © 2010 Khronos Group. This material may be distributed
       subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS
       opengl.org

opengl.org			  03/16/2013	      GLGETSAMPLERPARAMETE(3G)
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