glGetTexParameter : PyOpenGL 3.0.2 GL Man Pages

return texture parameter values

Signature

glGetTexParameter( )->

glGetTexParameterIiv( GLenum ( target ) , GLenum ( pname ) , GLint * ( params ) )-> void

glGetTexParameterIiv( target , pname , params )

glGetTexParameterIuiv( GLenum ( target ) , GLenum ( pname ) , GLuint * ( params ) )-> void

glGetTexParameterIuiv( target , pname , params )

glGetTexParameterfv( GLenum ( target ) , GLenum ( pname ) , GLfloat * ( params ) )-> void

glGetTexParameterfv( target , pname )

glGetTexParameteriv( GLenum ( target ) , GLenum ( pname ) , GLint * ( params ) )-> void

glGetTexParameteriv( target , pname )

Parameters

Variables	Description
target	Specifies the symbolic name of the target texture. GL_TEXTURE_1D , GL_TEXTURE_2D , GL_TEXTURE_1D_ARRAY , GL_TEXTURE_2D_ARRAY , GL_TEXTURE_3D , GL_TEXTURE_RECTANGLE , GL_TEXTURE_CUBE_MAP , and GL_TEXTURE_CUBE_MAP_ARRAY are accepted.
pname	Specifies the symbolic name of a texture parameter. GL_DEPTH_STENCIL_TEXTURE_MODE , GL_TEXTURE_BASE_LEVEL , GL_TEXTURE_BORDER_COLOR , GL_TEXTURE_COMPARE_MODE , GL_TEXTURE_COMPARE_FUNC , GL_TEXTURE_IMMUTABLE_FORMAT , GL_TEXTURE_IMMUTABLE_LEVELS , GL_TEXTURE_LOD_BIAS , GL_TEXTURE_MAG_FILTER , GL_TEXTURE_MAX_LEVEL , GL_TEXTURE_MAX_LOD , GL_TEXTURE_MIN_FILTER , GL_TEXTURE_MIN_LOD , GL_TEXTURE_SWIZZLE_R , GL_TEXTURE_SWIZZLE_G , GL_TEXTURE_SWIZZLE_B , GL_TEXTURE_SWIZZLE_A , GL_TEXTURE_SWIZZLE_RGBA , GL_TEXTURE_VIEW_MIN_LAYER , GL_TEXTURE_VIEW_MIN_LEVEL , GL_TEXTURE_VIEW_NUM_LAYERS , GL_TEXTURE_VIEW_NUM_LEVELS , GL_TEXTURE_WRAP_S , GL_TEXTURE_WRAP_T , and GL_TEXTURE_WRAP_R 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. GL_TEXTURE_1D , GL_TEXTURE_2D , GL_TEXTURE_3D , GL_TEXTURE_1D_ARRAY , GL_TEXTURE_2D_ARRAY , GL_TEXTURE_RECTANGLE , GL_TEXTURE_CUBE_MAP , GL_TEXTURE_CUBE_MAP_ARRAY specify one-, two-, or three-dimensional, one-dimensional array, two-dimensional array, rectangle, cube-mapped or cube-mapped array texturing, respectively. pname accepts the same symbols as glTexParameter , with the same interpretations:

GL_DEPTH_STENCIL_TEXTURE_MODE: Returns the single-value depth stencil texture mode, a symbolic constant. The initial value is GL_DEPTH_COMPONENT .
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_BASE_LEVEL: Returns the single-valued base texture mipmap level. The initial value is 0.
GL_TEXTURE_MAX_LEVEL: Returns the single-valued maximum texture mipmap array level. The initial value is 1000.
GL_TEXTURE_SWIZZLE_R: Returns the red component swizzle. The initial value is GL_RED .
GL_TEXTURE_SWIZZLE_G: Returns the green component swizzle. The initial value is GL_GREEN .
GL_TEXTURE_SWIZZLE_B: Returns the blue component swizzle. The initial value is GL_BLUE .
GL_TEXTURE_SWIZZLE_A: Returns the alpha component swizzle. The initial value is GL_ALPHA .
GL_TEXTURE_SWIZZLE_RGBA: Returns the component swizzle for all channels in a single query.
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 glTexParameter .
GL_TEXTURE_COMPARE_FUNC: Returns a single-valued texture comparison function, a symbolic constant. The initial value is GL_LEQUAL . See glTexParameter .
GL_TEXTURE_VIEW_MIN_LEVEL: Returns a single-valued base level of a texture view relative to its parent. The initial value is 0. See glTextureView .
GL_TEXTURE_VIEW_NUM_LEVELS: Returns a single-valued number of levels of detail of a texture view. See glTextureView .
GL_TEXTURE_VIEW_MIN_LAYER: Returns a single-valued first level of a texture array view relative to its parent. See glTextureView .
GL_TEXTURE_VIEW_NUM_LAYERS: Returns a single-valued number of layers in a texture array view. See glTextureView .
GL_TEXTURE_IMMUTABLE_LEVELS: Returns a single-valued number of immutable texture levels in a texture view. See glTextureView .

In addition to the parameters that may be set with glTexParameter , glGetTexParameter accepts the following read-only parameters:

GL_TEXTURE_IMMUTABLE_FORMAT: Returns non-zero if the texture has an immutable format. Textures become immutable if their storage is specified with glTexStorage1D , glTexStorage2D or glTexStorage3D . The initial value is GL_FALSE .

Notes

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

GL_DEPTH_STENCIL_TEXTURE_MODE , GL_TEXTURE_VIEW_MIN_LEVEL , GL_TEXTURE_VIEW_NUM_LEVELS , GL_TEXTURE_VIEW_MIN_LAYER , GL_TEXTURE_VIEW_NUM_LAYERS and GL_TEXTURE_IMMUTABLE_LEVELS are available only if the GL version is 4.3 or greater.

Errors

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

Copyright

1991-2006 Silicon Graphics, Inc. Copyright

2010-2012 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/ .

glGetTexParameter