glGetTexParameter — return texture parameter values
void glGetTexParameterfv(
|
GLenum target, |
GLenum pname, | |
GLfloat * params) ; |
void glGetTexParameteriv(
|
GLenum target, |
GLenum pname, | |
GLint * params) ; |
target
Specifies the symbolic name of the target texture.
GL_TEXTURE_2D
,
GL_TEXTURE_2D_ARRAY
,
GL_TEXTURE_3D
, and
GL_TEXTURE_CUBE_MAP
are accepted.
pname
Specifies the symbolic name of a texture parameter.
GL_TEXTURE_BASE_LEVEL
,
GL_TEXTURE_COMPARE_FUNC
,
GL_TEXTURE_COMPARE_MODE
,
GL_TEXTURE_IMMUTABLE_FORMAT
,
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_WRAP_S
,
GL_TEXTURE_WRAP_T
, and
GL_TEXTURE_WRAP_R
are accepted.
params
Returns the texture parameters.
glGetTexParameter
returns in params
the value or values of the texture parameter
specified as pname
.
target
defines the target texture.
GL_TEXTURE_2D
,
GL_TEXTURE_3D
,
GL_TEXTURE_2D_ARRAY
, and
GL_TEXTURE_CUBE_MAP
specify two- or three-dimensional, two-dimensional array, or cube-mapped texturing, respectively.
pname
accepts the same symbols as glTexParameter,
with the same interpretations:
GL_TEXTURE_BASE_LEVEL
Returns the single-valued base texture mipmap level. The initial value is 0.
GL_TEXTURE_COMPARE_FUNC
Returns a single-valued texture comparison function, a symbolic constant. The
initial value is GL_LEQUAL
. See glTexParameter.
GL_TEXTURE_COMPARE_MODE
Returns a single-valued texture comparison mode, a symbolic constant. The
initial value is GL_NONE
. See glTexParameter.
GL_TEXTURE_IMMUTABLE_FORMAT
Returns a single-value boolean representing the immutability of the texture format and size.
initial value is GL_FALSE
. See glTexStorage2D.
GL_TEXTURE_MAG_FILTER
Returns the single-valued texture magnification filter,
a symbolic constant. The initial value is GL_LINEAR
.
GL_TEXTURE_MAX_LEVEL
Returns the single-valued maximum texture mipmap array level. 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_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_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_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
.
If an error is generated,
no change is made to the contents of params
.
GL_INVALID_ENUM
is generated if target
or pname
is not an
accepted value.
OpenGL ES API Version | ||
---|---|---|
Function Name | 2.0 | 3.0 |
glGetTexParameterfv
|
✔ | ✔ |
glGetTexParameteriv
|
✔ | ✔ |
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.