glGetTexParameter — return texture parameter values
void glGetTexParameterfv(
|
GLenum target, |
GLenum pname, | |
GLfloat * params) ; |
void glGetTexParameteriv(
|
GLenum target, |
GLenum pname, | |
GLint * params) ; |
void glGetTexParameterIiv(
|
GLenum target, |
GLenum pname, | |
GLint * params) ; |
void glGetTexParameterIuiv(
|
GLenum target, |
GLenum pname, | |
GLuint * params) ; |
void glGetTextureParameterfv(
|
GLuint texture, |
GLenum pname, | |
GLfloat *params) ; |
void glGetTextureParameteriv(
|
GLuint texture, |
GLenum pname, | |
GLint *params) ; |
void glGetTextureParameterIiv(
|
GLuint texture, |
GLenum pname, | |
GLint *params) ; |
void glGetTextureParameterIuiv(
|
GLuint texture, |
GLenum pname, | |
GLuint *params) ; |
target
Specifies the target to which the texture is bound for
glGetTexParameterfv
,
glGetTexParameteriv
,
glGetTexParameterIiv
, and
glGetTexParameterIuiv
functions.
GL_TEXTURE_1D
,
GL_TEXTURE_1D_ARRAY
,
GL_TEXTURE_2D
,
GL_TEXTURE_2D_ARRAY
,
GL_TEXTURE_2D_MULTISAMPLE
,
GL_TEXTURE_2D_MULTISAMPLE_ARRAY
,
GL_TEXTURE_3D
,
GL_TEXTURE_CUBE_MAP
,
GL_TEXTURE_RECTANGLE
, and
GL_TEXTURE_CUBE_MAP_ARRAY
are accepted.
texture
Specifies the texture object name for
glGetTextureParameterfv
,
glGetTextureParameteriv
,
glGetTextureParameterIiv
, and
glGetTextureParameterIuiv
functions.
pname
Specifies the symbolic name of a texture parameter.
GL_DEPTH_STENCIL_TEXTURE_MODE
,
GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
,
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_TARGET
,
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.
glGetTexParameter
and
glGetTextureParameter
return 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
,
GL_TEXTURE_2D_MULTISAMPLE
, or
GL_TEXTURE_2D_MULTISAMPLE_ARRAY
specify one-, two-,
or three-dimensional, one-dimensional array, two-dimensional array,
rectangle, cube-mapped or cube-mapped array, two-dimensional multisample,
or two-dimensional multisample 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 .
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
,
a symbolic constant. The initial value is GL_REPEAT
.
GL_TEXTURE_WRAP_T
Returns the single-valued wrapping function for texture coordinate
,
a symbolic constant. The initial value is GL_REPEAT
.
GL_TEXTURE_WRAP_R
Returns the single-valued wrapping function for texture coordinate
,
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 . 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 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
and
glGetTextureParameter
accept the following
read-only parameters:
GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
Returns the matching criteria use for the texture when used as
an image texture. Can return
GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE
,
GL_IMAGE_FORMAT_COMPATIBILITY_BY_CLASS
or
GL_NONE
.
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
.
GL_TEXTURE_TARGET
Returns the effective target of the texture object. For
glGetTex*Parameter
functions, this is the
target parameter. For glGetTextureParameter*
,
it is the target to which the texture was initially bound when it
was created, or the value of the target parameter to the call to
glCreateTextures
which created the
texture.
If an error is generated, no change is made to the contents of
params
.
GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
is available
only if the GL version is 4.2 or greater.
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.
GL_TEXTURE_TARGET
are available only if the GL
version is 4.5 or greater.
GL_INVALID_ENUM
is generated if
pname
is not an accepted value.
GL_INVALID_ENUM
error is generated by
glGetTexParameter
if the effective
target
is not one of the accepted texture
targets.
GL_INVALID_OPERATION
is generated by
glGetTextureParameter*
if
texture
is not the name of an existing texture
object.
OpenGL Version | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
glGetTexParameterIiv
|
- | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
glGetTexParameterIuiv
|
- | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
glGetTexParameterfv
|
✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
glGetTexParameteriv
|
✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
glGetTextureParameterIiv
|
- | - | - | - | - | - | - | - | - | - | - | ✔ |
glGetTextureParameterIuiv
|
- | - | - | - | - | - | - | - | - | - | - | ✔ |
glGetTextureParameterfv
|
- | - | - | - | - | - | - | - | - | - | - | ✔ |
glGetTextureParameteriv
|
- | - | - | - | - | - | - | - | - | - | - | ✔ |
glTexParameter,
glTextureParameter
,
glTexStorage1D,
glTexStorage2D,
glTexStorage3D,
glTextureStorage1D
,
glTextureStorage2D
,
glTextureStorage3D
,
glTextureView
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt.