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Man Pages


Manual Reference Pages  -  GLPOPATTRIB (3)

NAME

glPushAttrib, glPopAttrib - push and pop the server attribute stack

CONTENTS

C Specification
Parameters
C Specification
Description
Notes
Errors
Associated Gets
See Also

C SPECIFICATION

void glPushAttrib( GLbitfield mask )

PARAMETERS

mask Specifies a mask that indicates which attributes to save. Values for mask are listed 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_BITAccumulation buffer clear value
GL_COLOR_BUFFER_BITGL_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_COLOR_LOGIC_OP enable bit
 GL_INDEX_LOGIC_OP enable bit
 Logic op function
 Color mode and index mode clear values
 Color mode and index mode writemasks
GL_CURRENT_BITCurrent 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_BITGL_DEPTH_TEST enable bit
 Depth buffer test function
 Depth buffer clear value
 GL_DEPTH_WRITEMASK enable bit
GL_ENABLE_BITGL_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_COLOR_LOGIC_OP flag
 GL_INDEX_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_OFFSET_LINE flag
 GL_POLYGON_OFFSET_FILL flag
 GL_POLYGON_OFFSET_POINT 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_BITGL_MAP1_x enable bits, where x is a map type
 GL_MAP2_x enable bits, where x is a map type
 1D grid endpoints and divisions
 2D grid endpoints and divisions
 GL_AUTO_NORMAL enable bit
GL_FOG_BITGL_FOG enable bit
 Fog color
 Fog density
 Linear fog start
 Linear fog end
 Fog index
 GL_FOG_MODE value
GL_HINT_BITGL_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_BITGL_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_BITGL_LINE_SMOOTH flag
 GL_LINE_STIPPLE enable bit
 Line stipple pattern and repeat counter
 Line width
GL_LIST_BITGL_LIST_BASE setting
GL_PIXEL_MODE_BITGL_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_BITGL_POINT_SMOOTH flag
 Point size
GL_POLYGON_BITGL_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_OFFSET_FILL flag
 GL_POLYGON_OFFSET_LINE flag
 GL_POLYGON_OFFSET_POINT flag
 GL_POLYGON_OFFSET_FACTOR
 GL_POLYGON_OFFSET_UNITS
GL_POLYGON_STIPPLE_BITPolygon stipple image
GL_SCISSOR_BITGL_SCISSOR_TEST flag
 Scissor box
GL_STENCIL_BUFFER_BITGL_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_BITEnable 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
 Current texture bindings (for example, GL_TEXTURE_2D_BINDING)
GL_TRANSFORM_BITCoefficients of the six clipping planes
 Enable bits for the user-definable clipping planes
 GL_MATRIX_MODE value
 GL_NORMALIZE flag
GL_VIEWPORT_BITDepth 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.

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, render mode state, and select and feedback state cannot be saved. Client state must be saved with glPushClientAttrib.

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

SEE ALSO

glGet, glGetClipPlane, glGetError, glGetLight, glGetMap, glGetMaterial,
glGetPixelMap, glGetPolygonStipple, glGetString, glGetTexEnv, glGetTexGen, glGetTexImage, glGetTexLevelParameter, glGetTexParameter, glIsEnabled, glPushClientAttrib
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