glGetTexParameterfv,
glGetTexParameteriv
[New
- Windows 95, OEM Service Release 2]
The glGetTexParameterfv
and glGetTexParameteriv functions return texture parameter values.
void glGetTexParameterfv(
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GLenum target, |
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|
GLenum pname, |
|
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GLfloat * params |
|
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); |
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void glGetTexParameteriv(
|
GLenum target, |
|
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GLenum pname, |
|
|
GLint * params |
|
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); |
|
Parameters
target
The symbolic
name of the target texture. GL_TEXTURE_1D and GL_TEXTURE_2D are accepted.
pname
The symbolic
name of a texture parameter. The following values are accepted:
GL_TEXTURE_MAG_FILTER
Returns the
single-valued texture magnification filter, a symbolic constant.
GL_TEXTURE_MIN_FILTER
Returns the
single-valued texture minification filter, a symbolic constant.
GL_TEXTURE_WRAP_S
Returns the
single-valued wrapping function for texture coordinate s, a symbolic
constant.
GL_TEXTURE_WRAP_T
Returns the
single-valued wrapping function for texture coordinate t, a symbolic
constant.
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.
params
Returns the
texture parameters.
Remarks
The glGetTexParameter
function returns in params the value or values of the texture parameter
specified as pname. The target parameter defines the target
texture either GL_TEXTURE_1D or
GL_TEXTURE_2D to specify
one- or two-dimensional texturing. The pname parameter accepts the same
symbols as glTexParameter,
with the same interpretations.
If an error
is generated, no change is made to the contents of params.
Error Codes
The following
are the error codes generated and their conditions.
|
Error
Code |
Condition |
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GL_INVALID_ENUM
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target or pname was not an accepted value. |
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GL_INVALID_OPERATION
|
glGetTexParameter was called between a call to glBegin and the
corresponding call to glEnd. |
See Also