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
|
✔ | ✔ |
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