fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)NAMEfglTexImage2D - specify a two-dimensional texture image
FORTRAN SPECIFICATION
SUBROUTINE fglTexImage2D( INTEGER*4 target,
INTEGER*4 level,
INTEGER*4 internalformat,
INTEGER*4 width,
INTEGER*4 height,
INTEGER*4 border,
INTEGER*4 format,
INTEGER*4 type,
CHARACTER*8 pixels )
PARAMETERS
target Specifies the target texture. Must be GL_TEXTURE_2D or
GL_PROXY_TEXTURE_2D.
level Specifies the level-of-detail number. Level 0 is the
base image level. Level n is the nth mipmap reduction
image.
internalformat Specifies the number of color components in the texture.
Must be 1, 2, 3, or 4, or one of the following symbolic
constants: GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_ALPHA12,
GL_ALPHA16, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8,
GL_LUMINANCE12, GL_LUMINANCE16, GL_LUMINANCE_ALPHA,
GL_LUMINANCE4_ALPHA4, GL_LUMINANCE6_ALPHA2,
GL_LUMINANCE8_ALPHA8, GL_LUMINANCE12_ALPHA4,
GL_LUMINANCE12_ALPHA12, GL_LUMINANCE16_ALPHA16,
GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
GL_INTENSITY12, GL_INTENSITY16, GL_R3_G3_B2, GL_RGB,
GL_RGB4, GL_RGB5, GL_RGB8, GL_RGB10, GL_RGB12, GL_RGB16,
GL_RGBA, GL_RGBA2, GL_RGBA4, GL_RGB5_A1, GL_RGBA8,
GL_RGB10_A2, GL_RGBA12, GL_RGBA16, GL_DEPTH_COMPONENT,
GL_DEPTH_COMPONENT16_SGIX, GL_DEPTH_COMPONENT24_SGIX,
GL_DEPTH_COMPONENT32_SGIX, GL_DUAL_ALPHA4_SGIS,
GL_DUAL_ALPHA8_SGIS, GL_DUAL_ALPHA12_SGIS,
GL_DUAL_ALPHA16_SGIS, GL_DUAL_LUMINANCE4_SGIS,
GL_DUAL_LUMINANCE8_SGIS, GL_DUAL_LUMINANCE12_SGIS,
GL_DUAL_LUMINANCE16_SGIS, GL_DUAL_INTENSITY4_SGIS,
GL_DUAL_INTENSITY8_SGIS, GL_DUAL_INTENSITY12_SGIS,
GL_DUAL_INTENSITY16_SGIS, GL_DUAL_LUMINANCE_ALPHA4_SGIS,
GL_DUAL_LUMINANCE_ALPHA8_SGIS, GL_QUAD_ALPHA4_SGIS,
GL_QUAD_ALPHA8_SGIS, GL_QUAD_LUMINANCE4_SGIS,
GL_QUAD_LUMINANCE8_SGIS, GL_QUAD_INTENSITY4_SGIS, or
GL_QUAD_INTENSITY8_SGIS.
Page 1
fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
width Specifies the width of the texture image. Must be
n
2 + 2(border) for some integer n. All implementations
support texture images that are at least 64 texels wide.
height Specifies the height of the texture image. Must be
m
2 + I(border) for some integer m, where I is 2 when
GL_INTERLACE_SGIX is disabled, and 1 otherwise. All
implementations support texture images that are at least
64 texels high.
border Specifies the width of the border. Must be either 0 or
1.
format Specifies the format of the pixel data. The following
symbolic values are accepted: GL_COLOR_INDEX, GL_RED,
GL_GREEN, GL_BLUE, GL_ALPHA, GL_RGB, GL_BGR GL_RGBA,
GL_BGRA, GL_ABGR_EXT, GL_LUMINANCE, and
GL_LUMINANCE_ALPHA.
type Specifies the data type of the pixel data. The following
symbolic values are accepted: GL_UNSIGNED_BYTE, GL_BYTE,
GL_BITMAP, GL_UNSIGNED_SHORT, GL_SHORT, GL_UNSIGNED_INT,
GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2,
GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5,
GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4,
GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1,
GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8,
GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2,
and GL_UNSIGNED_INT_2_10_10_10_REV.
pixels Specifies a pointer to the image data in memory.
DESCRIPTION
Texturing maps a portion of a specified texture image onto each graphical
primitive for which texturing is enabled. To enable and disable two-
dimensional texturing, call fglEnable and fglDisable with argument
GL_TEXTURE_2D.
To define texture images, call fglTexImage2D. The arguments describe the
parameters of the texture image, such as height, width, width of the
border, level-of-detail number (see fglTexParameter), and number of color
components provided. The last three arguments describe how the image is
represented in memory; they are identical to the pixel formats used for
fglDrawPixels.
If target is GL_PROXY_TEXTURE_2D, no data is read from pixels, but all of
the texture image state is recalculated, checked for consistency, and
checked against the implementation's capabilities. If the implementation
cannot handle a texture of the requested texture size, it sets all of the
image state to 0, but does not generate an error (see fglGetError). To
query for an entire mipmap array, use an image array level greater than
or equal to 1.
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fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
If target is GL_TEXTURE_2D or GL_DETAIL_TEXTURE_2D_SGIS, data is read
from pixels as a sequence of signed or unsigned bytes, shorts, or longs,
or single-precision floating-point values, depending on type. These
values are grouped into sets of one, two, three, or four values,
depending on format, to form elements. If type is GL_BITMAP, the data is
considered as a string of unsigned bytes (and format must be
GL_COLOR_INDEX).
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fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
Each data byte is treated as eight 1-bit elements, with bit ordering
determined by GL_UNPACK_LSB_FIRST (see fglPixelStore).
The first element corresponds to the lower left corner of the texture
image. Subsequent elements progress left-to-right through the remaining
texels in the lowest row of the texture image, and then in successively
higher rows of the texture image. The final element corresponds to the
upper right corner of the texture image.
When GL_INTERLACE_SGIX is enabled, only rows (0,2,4,...) of the texture
image (where the border is considered part of the texture image) are
defined. Rows (1,3,5,...) are left undefined and can only be defined
using fglTexSubImage2D, fglTexSubImage2DEXT, fglCopyTexSubImage2D or
fglCopyTexSubImage2DEXT. Note that when GL_INTERLACE_SGIX is enabled the
total height (i.e., the height of interior texture image plus twice the
border) of the defined texture is 2*height.
format determines the composition of each element in pixels. It can
assume one of eleven symbolic values:
GL_COLOR_INDEX
Each element is a single value, a color index. The GL converts
it to fixed point (with an unspecified number of zero bits to
the right of the binary point), shifted left or right depending
on the value and sign of GL_INDEX_SHIFT, and added to
GL_INDEX_OFFSET (see
fglPixelTransfer). The resulting index is converted to a set of
color components using the GL_PIXEL_MAP_I_TO_R,
GL_PIXEL_MAP_I_TO_G, GL_PIXEL_MAP_I_TO_B, and
GL_PIXEL_MAP_I_TO_A tables, and clamped to the range [0,1].
GL_RED Each element is a single red component. The GL converts it to
floating point and assembles it into an RGBA element by
attaching 0 for green and blue, and 1 for alpha. Each component
is then multiplied by the signed scale factor GL_c_SCALE, added
to the signed bias GL_c_BIAS, and clamped to the range [0,1]
(see fglPixelTransfer).
GL_GREEN Each element is a single green component. The GL converts it to
floating point and assembles it into an RGBA element by
attaching 0 for red and blue, and 1 for alpha. Each component
is then multiplied by the signed scale factor GL_c_SCALE, added
to the signed bias GL_c_BIAS, and clamped to the range [0,1]
(see fglPixelTransfer).
GL_BLUE Each element is a single blue component. The GL converts it to
floating point and assembles it into an RGBA element by
attaching 0 for red and green, and 1 for alpha. Each component
is then multiplied by the signed scale factor GL_c_SCALE, added
to the signed bias GL_c_BIAS, and clamped to the range [0,1]
(see fglPixelTransfer).
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fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
GL_ALPHA Each element is a single alpha component. The GL converts it to
floating point and assembles it into an RGBA element by
attaching 0 for red, green, and blue. Each component is then
multiplied by the signed scale factor GL_c_SCALE, added to the
signed bias GL_c_BIAS, and clamped to the range [0,1] (see
fglPixelTransfer).
GL_RGB
GL_BGR Each element is an RGB triple. The GL converts it to floating
point and assembles it into an RGBA element by attaching 1 for
alpha. Each component is then multiplied by the signed scale
factor GL_c_SCALE, added to the signed bias GL_c_BIAS, and
clamped to the range [0,1] (see
fglPixelTransfer).
GL_RGBA
GL_BGRA
GL_ABGR_EXT
Each element contains all four components. Each component is
multiplied by the signed scale factor GL_c_SCALE, added to the
signed bias GL_c_BIAS, and clamped to the range [0,1] (see
fglPixelTransfer).
GL_LUMINANCE
Each element is a single luminance value. The GL converts it
to floating point, then assembles it into an RGBA element by
replicating the luminance value three times for red, green, and
blue and attaching 1 for alpha. Each component is then
multiplied by the signed scale factor GL_c_SCALE, added to the
signed bias GL_c_BIAS, and clamped to the range [0,1] (see
fglPixelTransfer).
GL_LUMINANCE_ALPHA
Each element is a luminance/alpha pair. The GL converts it to
floating point, then assembles it into an RGBA element by
replicating the luminance value three times for red, green, and
blue. Each component is then multiplied by the signed scale
factor GL_c_SCALE, added to the signed bias GL_c_BIAS, and
clamped to the range [0,1] (see
fglPixelTransfer).
Refer to the fglDrawPixels reference page for a description of the
acceptable values for the type parameter.
If an application wants to store the texture at a certain resolution or
in a certain format, it can request the resolution and format with
internalformat. The GL will choose an internal representation that
closely approximates that requested by internalformat, but it may not
match exactly. (The representations specified by GL_LUMINANCE,
Page 5
fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
GL_LUMINANCE_ALPHA, GL_RGB, and GL_RGBA must match exactly. The numeric
values 1, 2, 3, and 4 may also be used to specify the above
representations.)
Use the GL_PROXY_TEXTURE_2D target to try out a resolution and format.
The implementation will update and recompute its best match for the
requested storage resolution and format. To then query this state, call
fglGetTexLevelParameter. If the texture cannot be accommodated, texture
state is set to 0.
A one-component texture image uses only the red component of the RGBA
color extracted from pixels. A two-component image uses the R and A
values. A three-component image uses the R, G, and B values. A four-
component image uses all of the RGBA components.
The mapping of components from the canonical RGBA to the internal storage
formats that begin with GL_DUAL_ and GL_QUAD_ needs to be clarified.
There are three cases. The first case is for the GL_DUAL_ formats that
are groups of GL_ALPHA, GL_LUMINANCE, and GL_INTENSITY. The R value goes
to the first group while the A value goes to the second group. The
second case is for the GL_DUAL_ formats that are groups of
GL_LUMINANCE_ALPHA. The R and G values go to the first group while the B
and A values go to the second group. The third case is for the GL_QUAD_
formats. The R value goes to the first group, the G value to the second
group, the B value to the third group, and the A value to the fourth
group.
When internalformat is set to GL_DEPTH_COMPONENT,
GL_DEPTH_COMPONENT16_SGIX, GL_DEPTH_COMPONENT24_SGIX, or
GL_DEPTH_COMPONENT32_SGIX, and format has the value GL_DEPTH_COMPONENT,
fglTexImage2D defines a depth texture that can be used for shadow
mapping. See fglIntro and fglTexParameter for more information.
Normally fglTexImage2D is synchronous: OpenGL executes a fglTexImage2D
command in the order it is issued in the OpenGL command stream. Calling
fglEnable with parameter GL_ASYNC_TEX_IMAGE_SGIX causes subsequent
fglTexImage2D commands to be asynchronous as defined by the SGIX_async
extension. An asynchronous fglTexImage2D command samples the OpenGL
state vector at the point in the OpenGL command stream where the command
is issued, but the results of the command (e.g. availability of texels
for use in rasterization) do not happen until some unspecified time in
the future. In particular, the order of the asynchronous command
relative to other OpenGL commands issued later in the command stream is
undefined. An implementation may choose to execute asynchronous commands
in parallel with the normal command stream or at some convenient time in
the future.
Calling fglDisable with parameter GL_ASYNC_TEX_IMAGE_SGIX restores the
default synchronous behavior for subsequent fglTexImage2D commands. It
does not affect any pending asynchronous fglTexImage commands, or wait
for their completion.
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fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
When an asynchronous fglTexImage2D command is issued, it is associated
with the current value of GL_ASYNC_MARKER_SGIX as defined by the
SGIX_async extension. A program can determine if an asynchronous
fglTexImage2D command has completed by using the fglFinishAsyncSGIX or
fglPollAsyncSGIX commands.
There is a maximum number of asynchronous fglTexImage commands that can
be outstanding at any one time, defined by the implementation. This
value can be queried with fglGetIntegerv with argument
GL_MAX_ASYNC_TEX_IMAGE_SGIX.
NOTES
Texturing has no effect in color index mode.
If the GL_ARB_imaging extension is supported, RGBA elements may also be
processed by the imaging pipeline. The following stages may be applied
to an RGBA color before color component clamping to the range [0, 1]:
1. Color component replacement by the color table specified for
GL_COLOR_TABLE, if enabled. See fglColorTable.
2. Two-dimensional Convolution filtering, if enabled. See
fglConvolutionFilter1D.
If a convolution filter changes the __width of the texture (by
processing with a GL_CONVOLUTION_BORDER_MODE of GL_REDUCE, for
n
example), the width must 2 +2(height), for some integer n, and height
m
must be 2 +(border), for some integer m, after filtering.
3. RGBA components may be multiplied by GL_POST_CONVOLUTION_c_SCALE,
and added to GL_POST_CONVOLUTION_c_BIAS, if enabled. See
fglPixelTransfer.
4. Color component replacement by the color table specified for
GL_POST_CONVOLUTION_COLOR_TABLE, if enabled. See fglColorTable.
5. Transformation by the color matrix. See fglMatrixMode.
6. RGBA components may be multiplied by GL_POST_COLOR_MATRIX_c_SCALE,
and added to GL_POST_COLOR_MATRIX_c_BIAS, if enabled. See
fglPixelTransfer.
7. Color component replacement by the color table specified for
GL_POST_COLOR_MATRIX_COLOR_TABLE, if enabled. See fglColorTable.
The texture image can be represented by the same data formats as the
pixels in a fglDrawPixels command, except that GL_STENCIL_INDEX and
GL_DEPTH_COMPONENT cannot be used. fglPixelStore and fglPixelTransfer
modes affect texture images in exactly the way they affect fglDrawPixels.
Page 7
fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
GL_ABGR_EXT is part of the EXT_abgr extension, not part of the core GL
command set. If GL_EXT_abgr is included in the string returned by
fglGetString, when called with argument GL_EXTENSIONS, extension EXT_abgr
is supported by the GL.
fglTexImage2D and GL_PROXY_TEXTURE_2D are available only if the GL
version is 1.1 or greater.
Internal formats other than 1, 2, 3, or 4 may be used only if the GL
version is 1.1 or greater.
In GL version 1.1 or greater, pixels may be a null pointer. In this case
texture memory is allocated to accommodate a texture of width width and
height height. You can then download subtextures to initialize this
texture memory. The image is undefined if the user tries to apply an
uninitialized portion of the texture image to a primitive.
Formats GL_BGR, and GL_BGRA and types GL_UNSIGNED_BYTE_3_3_2,
GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5,
GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4,
GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1,
GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8,
GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and
GL_UNSIGNED_INT_2_10_10_10_REV are available only if the GL version is
1.2 or greater.
ERRORS
GL_INVALID_ENUM is generated if target is not GL_TEXTURE_2D or
GL_PROXY_TEXTURE_2D.
GL_INVALID_ENUM is generated if format is not an accepted format
constant. Format constants other than GL_STENCIL_INDEX and
GL_DEPTH_COMPONENT are accepted.
GL_INVALID_ENUM is generated if type is not a type constant.
GL_INVALID_ENUM is generated if type is GL_BITMAP and format is not
GL_COLOR_INDEX.
GL_INVALID_VALUE is generated if level is less than 0.
GL_INVALID_VALUE may be generated if level is greater than log max, where
2
max is the returned value of GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if internalformat is not 1, 2, 3, 4, or one
of the accepted resolution and format symbolic constants.
GL_INVALID_VALUE is generated if width or height is less than 0 or
greater than 2 + GL_MAX_TEXTURE_SIZE, if width cannot be represented as
k
2 + 2(border) for some integer value of k, or if height cannot be
k
represented as 2 + I(border) for some integer value of k, where I is 2
when GL_INTERLACE_SGIX is disabled and 1 otherwise.
Page 8
fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
GL_INVALID_VALUE is generated if border is not 0 or 1.
GL_INVALID_OPERATION is generated if fglTexImage2D is executed between
the execution of fglBegin and the corresponding execution of fglEnd.
GL_INVALID_OPERATION is generated if type is one of
GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV,
GL_UNSIGNED_SHORT_5_6_5, or GL_UNSIGNED_SHORT_5_6_5_REV and format is not
GL_RGB.
GL_INVALID_OPERATION is generated if type is one of
GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV,
GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV,
GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV,
GL_UNSIGNED_INT_10_10_10_2, or GL_UNSIGNED_INT_2_10_10_10_REV and format
is not GL_RGBA, GL_BGRA or GL_ABGR_EXT.
GL_INVALID_OPERATION is generated when the SGIX_subsample extension is
supported, and the pixel storage mode GL_UNPACK_SUBSAMPLE_RATE_SGIX is
not GL_PIXEL_SUBSAMPLE_4444_SGIX, and width is not a multiple of 2, or
format is not a 3 or 4 component format, or type is a packed pixels type.
GL_INVALID_OPERATION is generated if GL_ASYNC_TEX_IMAGE_SGIX is enabled
and the number of asynchronous fglTexImage commands that have been issued
but not queried (using fglFinishAsyncSGIX or fglPollAsyncSGIX) exceeds
GL_MAX_ASYNC_TEX_IMAGE_SGIX.
ASSOCIATED GETS
fglGetTexImage
fglIsEnabled with argument GL_TEXTURE_2D
MACHINE DEPENDENCIES
The SGIX_async and SGIX_async_pixel extensions are implemented only on
Octane2 VPro systems.
RealityEngine, RealityEngine2, and VTX systems do not support color
matrix transformations on images as they are loaded to or read back from
texture memory.
RealityEngine, RealityEngine2, and VTX systems do not support convolving
images as they are loaded into texture memory.
On RealityEngine, RealityEngine2, and VTX systems the width and height of
a detail texture must both be 256. On High Impact and Maximum Impact
systems, detail texture size must be 128x128 or 256x256.
Detail texturing acts as if the mipmap stack were extended by a number of
levels equal to the absolute value of the GL_DETAIL_TEXTURE_LEVEL_SGIS
parameter. The number of normal mipmap levels plus the number of detail
levels must not exceed the maximum number of levels that can be supported
on the hardware. For example, on InfiniteReality systems the maximum
Page 9
fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
number of levels is 15. A detail texture at level -4 could be supported
on a base texture of size 2K (that is, a base texture with 11 levels) but
not on a base texture that is larger than 2K (one with 12 or more
levels). Failure to observe this constraint causes detail textures to
swim or jitter.
RealityEngine, RealityEngine2, and VTX systems do not support histogram
or minmax operations on images as they are being loaded into texture
memory.
The SGIX_interlace extension is supported only on InfiniteReality
systems, on RealityEngine, RealityEngine2, and VTX systems, on Octane2
VPro systems, and on O2 systems.
The EXT_packed_pixels extension is not supported on RealityEngine,
RealityEngine2, and VTX systems.
The SGIX_subsample and SGIX_resample extensions are supported only on
Octane2 VPro systems. Applying the GL_PIXEL_SUBSAMPLE_2424_SGIX
subsample rate is accelerated for direct immmediate mode transfers when
the format is GL_RGB or GL_RGBA, and the type is GL_UNSIGNED_BYTE or
GL_UNSIGNED_SHORT.
On RealityEngine, RealityEngine2, and VTX systems:
1. The texture environment must be defined and texturing must be
enabled before loading a texture.
2. Texture formats composed only of alpha are not supported.
3. Borders are not supported; hence the border width must be 0.
4. Proxy textures are not supported.
5. fglTexImage2D with a NULL texture image may not be used inside a
display list.
6. GL_INTERLACE_SGIX is not supported (see fglEnable).
On High Impact and Maximum Impact systems the number of bits per
component, represented internally, is the same for all components and
will be 4, 8, or 12 bits per component. All specified internal formats
will receive an equal or greater representation in this scheme, up to the
12-bit limit. High Impact and Maximum Impact on Indigo2 systems do not
support texture internal formats of the type GL_INTENSITY or GL_ALPHA,
although High Impact and Maximum Impact on Octane systems do support
these types.
High Impact and Maximum Impact on Indigo2 systems without the TRAM option
card support 4 bits per component for GL_RGB and GL_RGBA, 4/8 bits per
component for GL_LUMINANCE_ALPHA, and 4/8/12 bits per component for
GL_LUMINANCE.
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fglTexImage2D(3G) OpenGL Reference fglTexImage2D(3G)
Texture borders are not supported on InfiniteReality systems, so the
border width should always be zero. Applications should use the texture
wrap mode GL_CLAMP_TO_EDGE_SGIS to obtain behavior similar to that of
borders.
The SGIS_texture_select extension is supported only on InfiniteReality
systems, High Impact and Maximum Impact on Octane systems, and High
Impact and Maximum Impact on Indigo2 systems with the TRAM option card.
On InfiniteReality, RealityEngine, RealityEngine2, and VTX systems, High
Impact and Maximum Impact systems, and Octane2 VPro systems, texture
objects (see fglBindTextureEXT) are significantly faster than display-
listed textures, and therefore are recommended for managing texture
memory.
SEE ALSO
fglColorTable, fglConvolutionFilter2D, fglCopyPixels, fglCopyTexImage1D,
fglCopyTexImage2D, fglCopyTexSubImage1D, fglCopyTexSubImage2D,
fglCopyTexSubImage3D, fglDrawPixels, fglMatrixMode, fglPixelStore,
fglPixelTransfer, fglSeparableFilter2D, fglTexEnv, fglTexGen,
fglTexImage1D, fglTexImage3D, fglTexSubImage1D, fglTexSubImage2D,
fglTexSubImage3D, fglTexParameter, fglAsyncMarkerSGIX,
fglDeleteAsyncMarkersSGIX, fglFinishAsyncSGIX, fglGenAsyncMarkersSGIX,
fglIsAsyncMarkerSGIX, fglPollAsyncSGIX
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