Name

glIsEnabled - test whether a capability is enabled

C Specification

GLboolean glIsEnabled(GLenum cap)

Parameters

cap

Specifies a symbolic constant indicating a GL capability.

Description

glIsEnabled returns GL_TRUE if cap is an enabled capability and returns GL_FALSE otherwise.

The following capabilities are accepted for cap:

Constant See function:
GL_ALPHA_TEST glAlphaFunc
GL_ARRAY_BUFFER_BINDING glBindBuffer
GL_BLEND glBlendFunc, glLogicOp
GL_CLIP_PLANE i glClipPlane
GL_COLOR_ARRAY glColorPointer
GL_COLOR_LOGIC_OP glLogicOp
GL_COLOR_MATERIAL glColorMaterial
GL_CULL_FACE glCullFace
GL_DEPTH_TEST glDepthFunc, glDepthRange
GL_DITHER glEnable
GL_FOG glFog
GL_LIGHT i glLight, glLightModel
GL_LIGHTING glLight, glLightModel, glMaterial
GL_LINE_SMOOTH glLineWidth
GL_MATRIX_PALETTE_OES glMatrixMode
GL_MATRIX_INDEX_ARRAY_OES glEnableClientState
GL_MULTISAMPLE glEnable
GL_NORMAL_ARRAY glNormalPointer
GL_NORMALIZE glNormal
GL_POINT_SIZE_ARRAY_OES glEnableClientState
GL_POINT_SMOOTH glPointSize
GL_POINT_SPRITE_OES glEnable, glTexEnv
GL_POLYGON_OFFSET_FILL glPolygonOffset
GL_RESCALE_NORMAL glEnable
GL_SAMPLE_ALPHA_TO_COVERAGE glEnable
GL_SAMPLE_ALPHA_TO_ONE glEnable
GL_SAMPLE_COVERAGE glEnable
GL_SCISSOR_TEST glScissor
GL_STENCIL_TEST glStencilFunc, glStencilOp
GL_TEXTURE_2D glTexImage2D
GL_TEXTURE_COORD_ARRAY glTexCoordPointer
GL_WEIGHT_ARRAY_OES glEnableClientState
GL_VERTEX_ARRAY glVertexPointer

Notes

If an error is generated, glIsEnabled returns 0.

Errors

GL_INVALID_ENUM is generated if cap is not an accepted value.

Copyright

Copyright © 2003-2004 Silicon Graphics, Inc.

This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.

See Also

glEnable, glEnableClientState