table of contents
other versions
GLGETTEXPARAMETER(3G) | [FIXME: manual] | GLGETTEXPARAMETER(3G) |
NAME¶
glGetTexParameter - return texture parameter valuesC SPECIFICATION¶
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);
PARAMETERS¶
targetSpecifies 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_TEXTURE_BASE_LEVEL, GL_TEXTURE_BORDER_COLOR,
GL_TEXTURE_COMPARE_MODE, GL_TEXTURE_COMPARE_FUNC,
GL_TEXTURE_IMMUTABLE_FORMAT, 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_WRAP_S, GL_TEXTURE_WRAP_T, and
GL_TEXTURE_WRAP_R are accepted.
params
Returns the texture parameters.
DESCRIPTION¶
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().
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.ERRORS¶
SEE ALSO¶
COPYRIGHT¶
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2011 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.05/30/2012 | [FIXME: source] |