GLISENABLED(3G)

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. Initially all capabilities except GL_DITHER are disabled; GL_DITHER is initially enabled.

The following capabilities are accepted for cap:

Constant | See
GL_BLEND | glBlendFunc(), glLogicOp()
GL_CLIP_DISTANCEi | glEnable()
GL_COLOR_LOGIC_OP | glLogicOp()
GL_CULL_FACE | glCullFace()
GL_DEPTH_CLAMP | glEnable()
GL_DEPTH_TEST | glDepthFunc(), glDepthRange()
GL_DITHER | glEnable()
GL_FRAMEBUFFER_SRGB | glEnable()
GL_LINE_SMOOTH | glLineWidth()
GL_MULTISAMPLE | glSampleCoverage()
GL_POLYGON_SMOOTH | glPolygonMode()
GL_POLYGON_OFFSET_FILL | glPolygonOffset()
GL_POLYGON_OFFSET_LINE | glPolygonOffset()
GL_POLYGON_OFFSET_POINT | glPolygonOffset()
GL_PROGRAM_POINT_SIZE | glEnable()
GL_PRIMITIVE_RESTART | glEnable(), glPrimitiveRestartIndex()
GL_SAMPLE_ALPHA_TO_COVERAGE | glSampleCoverage()
GL_SAMPLE_ALPHA_TO_ONE | glSampleCoverage()
GL_SAMPLE_COVERAGE | glSampleCoverage()
GL_SAMPLE_MASK | glEnable()
GL_SCISSOR_TEST | glScissor()
GL_STENCIL_TEST | glStencilFunc(), glStencilOp()
GL_TEXTURE_CUBEMAP_SEAMLESS | glEnable()

NOTES

If an error is generated, glIsEnabled returns GL_FALSE.

ERRORS

GL_INVALID_ENUM is generated if cap is not an accepted value.

SEE ALSO

glEnable(), glGet()

COPYRIGHT

Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.