glPushAttrib, glPopAttrib

[New - Windows 95, OEM Service Release 2]

The glPushAttrib and glPopAttrib functions push and pop the attribute stack.

void glPushAttrib(

Parameter

mask

A mask that indicates which attributes to save. The symbolic mask constants and their associated OpenGL state are as follows (the indented paragraphs list 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

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 flag

RGBA color associated with current raster position

Color index associated with current raster position

Texture coordinates associated with current raster position

GL_EDGE_FLAG flag

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 flag

GL_AUTO_NORMAL flag

GL_BLEND flag

Enable bits for the user-definable clipping planes

GL_COLOR_MATERIAL

GL_CULL_FACE flag

GL_DEPTH_TEST flag

GL_DITHER flag

GL_FOG flag

GL_LIGHTi where 0 <= i < GL_MAX_LIGHTS

GL_LIGHTING flag

GL_LINE_SMOOTH flag

GL_LINE_STIPPLE flag

GL_LOGIC_OP flag

GL_MAP1_x where x is a map type

GL_MAP2_x where x is a map type

GL_NORMALIZE flag

GL_POINT_SMOOTH flag

GL_POLYGON_SMOOTH flag

GL_POLYGON_STIPPLE flag

GL_SCISSOR_TEST flag

GL_STENCIL_TEST flag

GL_TEXTURE_1D flag

GL_TEXTURE_2D flag

Flags 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 flag

Fog color

Fog density

Linear fog start

Linear fog end

Fog index

GL_FOG_MODE value

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 indexes for each material

Specular exponent for each material

GL_SHADE_MODEL setting

GL_LINE_BIT

GL_LINE_SMOOTH flag

GL_LINE_STIPPLE enable bit

Line stipple pattern and repeat counter

Line width

GL_LIST_BIT

GL_LIST_BASE setting

GL_PIXEL_MODE_BIT

GL_RED_BIAS and GL_RED_SCALE settings

GL_GREEN_BIAS and GL_GREEN_SCALE values

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 values

GL_MAP_COLOR and GL_MAP_STENCIL flags

GL_ZOOM_X and GL_ZOOM_Y factors

GL_READ_BUFFER setting

GL_POINT_BIT

GL_POINT_SMOOTH flag

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 flag

GL_POLYGON_STIPPLE enable bit

GL_POLYGON_STIPPLE_BIT

Polygon stipple image

GL_SCISSOR_BIT

GL_SCISSOR_TEST flag

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 image

Minification function for each texture image

Magnification function for each texture image

Texture coordinates and wrap mode for each texture image

Color and mode 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

GL_TRANSFORM_BIT

Coefficients of the six clipping planes

Enable bits for the user-definable clipping planes

GL_MATRIX_MODE value

GL_NORMALIZE flag

GL_VIEWPORT_BIT

Depth range (near and far)

Viewport origin and extent

void glPopAttrib(

Remarks

The glPushAttrib function 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. The mask parameter 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 glPopAttrib function restores the values of the state variables saved with the last glPushAttrib command. Those not saved are left unchanged.

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 the OpenGL state.

Initially, the attribute stack is empty.

Not all values for the OpenGL 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.

The following functions retrieve information related to glPushAttrib and glPopAttrib:

glGet8KNKTW with argument GL_ATTRIB_STACK_DEPTH

glGet with argument GL_MAX_ATTRIB_STACK_DEPTH

Error Codes

The following are the error codes generated and their conditions.

See Also