glGetSamplerParameter : PyOpenGL 3.1.4 GL Man Pages

return sampler parameter values

Signature

glGetSamplerParameter( )->

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

glGetSamplerParameterIiv( sampler , pname , params )

glGetSamplerParameterIuiv( GLuint ( sampler ) , GLenum ( pname ) , GLuint * ( params ) )-> void

glGetSamplerParameterIuiv( sampler , pname , params )

glGetSamplerParameterfv( GLuint ( sampler ) , GLenum ( pname ) , GLfloat * ( params ) )-> void

glGetSamplerParameterfv( sampler , pname , params )

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

glGetSamplerParameteriv( sampler , pname , params )

Parameters

Variables	Description
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.

Version Support

glGetSamplerParameterIiv
glGetSamplerParameterIuiv
glGetSamplerParameterfv
glGetSamplerParameteriv

Copyright

2010-2014 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/

glGetSamplerParameter