glpushattrib - Man Page
glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
NAME
glPushAttrib, glPopAttrib - push and pop the attribute stack
C SPECIFICATION
void glPushAttrib( GLbitfield mask )
PARAMETERS
mask Specifies a mask that indicates which attributes to save. Values
for mask are listed in the table below.
C SPECIFICATION
void glPopAttrib( void )
DESCRIPTION
glPushAttrib takes one argument, a mask that indicates which groups of
state variables to save on the attribute stack. Symbolic constants are
used to set bits in the mask. mask is typically constructed by ORing
several of these constants together. The special mask GL_ALL_ATTRIB_BITS
can be used to save all stackable states.
The symbolic mask constants and their associated GL state are as follows
(the second column lists which attributes are saved):
GL_ACCUM_BUFFER_BIT Accumulation buffer clear value
GL_COLOR_BUFFER_BIT GL_ALPHA_TEST enable bit
Alpha test function and reference value
GL_BLEND enable bit
Blending source and destination functions
Constant blend color
Blending equation
GL_DITHER enable bit
GL_DRAW_BUFFER setting
GL_LOGIC_OP enable bit
Logic op function
Color mode and index mode clear values
Color mode and index mode writemasks
GL_CURRENT_BIT Current RGBA color
Current color index
Current normal vector
Current texture coordinates
Current raster position
GL_CURRENT_RASTER_POSITION_VALID enable bit
RGBA color associated with current raster
position
Color index associated with current raster
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glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
position
Texture coordinates associated with current
raster position
GL_EDGE_FLAG enable bit
GL_DEPTH_BUFFER_BIT GL_DEPTH_TEST enable bit
Depth buffer test function
Depth buffer clear value
GL_DEPTH_WRITEMASK enable bit
GL_ENABLE_BIT GL_ALPHA_TEST enable bit
GL_AUTO_NORMAL enable bit
GL_BLEND enable bit
GL_CLIP_PLANEi enable bits
GL_COLOR_MATERIAL
GL_CONVOLUTION_1D_EXT,
GL_CONVOLUTION_2D_EXT, and
GL_SEPARABLE_2D_EXT enable bits
GL_COLOR_TABLE_SGI enable bit
GL_CULL_FACE enable bit
GL_DEPTH_TEST enable bit
GL_DITHER enable bit
GL_FOG enable bit
GL_HISTOGRAM_EXT enable bit
GL_INTERLACE_SGIX enable bit
GL_LIGHTi where 0 <= iglPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
Enable bits GL_TEXTURE_GEN_x where x is S, T, R, or Q
GL_EVAL_BIT GL_MAP1_x enable bits, where x is a map type
GL_MAP2_x enable bits, where x is a map type
1-D grid endpoints and divisions
2-D grid endpoints and divisions
GL_AUTO_NORMAL enable bit
GL_FOG_BIT GL_FOG enable bit
Fog color
Fog density
Linear fog start
Linear fog end
Fog index
GL_FOG_MODE value
Control points for custom fog blending function
Number of control points
GL_FOG_OFFSET_SGIX enable bit
Fog offset parameters
GL_HINT_BIT GL_PERSPECTIVE_CORRECTION_HINT setting
GL_POINT_SMOOTH_HINT setting
GL_LINE_SMOOTH_HINT setting
GL_POLYGON_SMOOTH_HINT setting
GL_FOG_HINT setting
GL_LIGHTING_BIT GL_COLOR_MATERIAL enable bit
GL_COLOR_MATERIAL_FACE value
Color material parameters that are tracking the
current color
Ambient scene color
GL_LIGHT_MODEL_LOCAL_VIEWER value
GL_LIGHT_MODEL_TWO_SIDE setting
GL_LIGHTING enable bit
Enable bit for each light
Ambient, diffuse, and specular intensity
for each light
Direction, position, exponent, and cutoff angle
for each light
Constant, linear, and quadratic attenuation
factors for each light
Ambient, diffuse, specular, and emissive color
for each material
Ambient, diffuse, and specular color indices
for each material
Specular exponent for each material
GL_SHADE_MODEL setting
GL_LINE_BIT GL_LINE_SMOOTH enable bit
GL_LINE_STIPPLE enable bit
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glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
Line stipple pattern and repeat counter
Line width
GL_LIST_BIT GL_LIST_BASE setting
GL_MULTISAMPLE_BIT_EXT GL_MULTISAMPLE_SGIS enable bit
GL_SAMPLE_ALPHA_TO_MASK_SGIS enable bit
GL_SAMPLE_ALPHA_TO_ONE_SGIS enable bit
GL_SAMPLE_MASK_SGIS enable bit
GL_SAMPLE_MASK_VALUE_SGIS
GL_SAMPLE_MASK_INVERT_SGIS
GL_SAMPLE_PATTERN_SGIS
GL_PIXEL_MODE_BIT GL_RED_BIAS and GL_RED_SCALE values
GL_GREEN_BIAS and GL_GREEN_SCALE
GL_BLUE_BIAS and GL_BLUE_SCALE
GL_ALPHA_BIAS and GL_ALPHA_SCALE
GL_DEPTH_BIAS and GL_DEPTH_SCALE
GL_INDEX_OFFSET and GL_INDEX_SHIFT
GL_MAP_COLOR and GL_MAP_STENCIL enable bits
GL_ZOOM_X and GL_ZOOM_Y factors
GL_READ_BUFFER setting
Post-color-matrix scale and bias values
GL_COLOR_TABLE_SCALE_SGI and GL_COLOR_TABLE_BIAS_SGI
for all color tables
GL_CONVOLUTION_1D_EXT,
GL_CONVOLUTION_2D_EXT, and
GL_SEPARABLE_2D_EXT enable bits
Convolution filter scale and bias values
Post-convolution pixel scale and bias values
Convolution border mode
GL_HISTOGRAM_EXT enable bit
GL_MINMAX_EXT enable bit
GL_INTERLACE_SGIX enable bit
GL_POINT_BIT GL_POINT_SMOOTH enable bit
Point size
GL_POLYGON_BIT GL_CULL_FACE enable bit
GL_CULL_FACE_MODE value
GL_FRONT_FACE indicator
GL_POLYGON_MODE setting
GL_POLYGON_SMOOTH enable bit
GL_POLYGON_STIPPLE enable bit
GL_POLYGON_OFFSET_EXT enable bit
GL_POLYGON_OFFSET_FACTOR_EXT
GL_POLYGON_OFFSET_BIAS_EXT
GL_POLYGON_STIPPLE_BIT Polygon stipple image
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glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
GL_SCISSOR_BIT GL_SCISSOR_TEST enable bit
Scissor box
GL_STENCIL_BUFFER_BIT GL_STENCIL_TEST enable bit
Stencil function and reference value
Stencil value mask
Stencil fail, pass, and depth buffer pass actions
Stencil buffer clear value
Stencil buffer writemask
GL_TEXTURE_BIT Enable bits for the four texture coordinates
Border color for each texture target
Minification function for each texture target
Magnification function for each texture target
Texture coordinates and wrap mode for each
texture target
Color, mode, and bias for each texture environment
Enable bits GL_TEXTURE_GEN_x, x is S, T, R, and Q
GL_TEXTURE_GEN_MODE setting for S, T, R, and Q
glTexGen plane equations for S, T, R, and Q
Detail texture binding, level offset, mode,
and scaling function control points
Sharp texture scaling function control points
GL_TEXTURE_COLOR_TABLE_SGI enable bit
GL_TEXTURE_COLOR_TABLE_SCALE_SGI
GL_TEXTURE_COLOR_TABLE_BIAS_SGI
Current texture bindings
(e.g. GL_TEXTURE_2D_BINDING_EXT)
Minimum and maximum LOD clamping values
Base and maximum mipmap levels
Texture filter function weights
Dual and quad texture group selection
Post-texture filter scale and bias values
Clipmap frame size, center, and offset
Texture comparison operator
Texture comparison enable
Shadow ambient lighting coefficient
GL_TRANSFORM_BIT Coefficients of the six clipping planes
GL_CLIP_PLANEi enable bits
GL_MATRIX_MODE value
GL_NORMALIZE enable bit
Coefficients of the reference plane
GL_VIEWPORT_BIT Depth range (near and far)
Viewport origin and extent
glPopAttrib restores the values of the state variables saved with the
last glPushAttrib command. Those not saved are left unchanged.
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glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
It is an error to push attributes onto a full stack, or to pop attributes
off an empty stack. In either case, the error flag is set and no other
change is made to GL state.
Initially, the attribute stack is empty.
NOTES
Not all values for GL state can be saved on the attribute stack. For
example, pixel pack and unpack state, render mode state, and select and
feedback state cannot be saved.
The depth of the attribute stack depends on the implementation, but it
must be at least 16.
ERRORS
GL_STACK_OVERFLOW is generated if glPushAttrib is called while the
attribute stack is full.
GL_STACK_UNDERFLOW is generated if glPopAttrib is called while the
attribute stack is empty.
GL_INVALID_OPERATION is generated if glPushattrib or glPopAttrib is
executed between the execution of glBegin and the corresponding execution
of glEnd.
ASSOCIATED GETS
glGet with argument GL_ATTRIB_STACK_DEPTH.
glGet with argument GL_MAX_ATTRIB_STACK_DEPTH.
MACHINE DEPENDENCIES
GL_COLOR_TABLE_SGI, GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI and
GL_POST_CONVOLUTION_COLOR_TABLE_SGI are part of the SGI_color_table
extension which is not supported on RealityEngine, RealityEngine2, and
VTX systems.
On RealityEngine, RealityEngine2, and VTX and High Impact and Maximum
Impact systems there is no support for pushing or popping attributes
related to detail texturing.
The SGIX_interlace extension is supported only on InfiniteReality systems
and on RealityEngine, RealityEngine2, and VTX systems.
Before popping state that is transformed by the modelview matrix at the
time it is specified (e.g. light positions, user clipping planes, etc.)
on InfiniteReality systems it is necessary to set the modelview matrix to
its value at the time the state was originally specified. This is
because the popped state is re-transformed by the modelview matrix at the
time of the pop. This definitely will be fixed in the next release.
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glPushAttrib(3G) OpenGL Reference glPushAttrib(3G)
High Impact and Maximum Impact systems support this function for 1D and
2D textures only, and also do not work properly if texture objects are
being used. (see glBindTextureExt). This will be fixed in the next
release
RealityEngine, RealityEngine2, and VTX systems have no support for
pushing or popping attributes related to sharpen texturing.
On InfiniteReality systems, if the post-texture filter scale and bias
values are set to values other than the defaults, they are limited to the
range [0.0, 1.0). (note: this range excludes 1.0.) The
SGIX_texture_scale_bias extension is not supported on RealityEngine,
RealityEngine2, and VTX systems or on High Impact and Maximum Impact
systems.
The SGIS_texture_select extension is supported only on InfiniteReality
systems and on High Impact and Maximum Impact systems with the TRAM
option card.
SEE ALSO
glGet, glGetClipPlane, glGetError, glGetLight, glGetMap, glGetMaterial,
glGetPixelMap, glGetPolygonStipple, glGetString, glGetTexEnv,
glGetTexGen, glGetTexImage, glGetTexLevelParameter, glGetTexParameter,
glIsEnabled
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