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Man Pages


Manual Reference Pages  -  GLISENABLED (3)

NAME

glIsEnabled - test whether a capability is enabled

CONTENTS

C Specification
Parameters
Description
Notes
Errors
See Also

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:

ConstantSee
GL_ALPHA_TESTglAlphaFunc 
GL_AUTO_NORMALglEvalCoord 
GL_BLENDglBlendFunc, glLogicOp 
GL_CLIP_PLANEiglClipPlane 
GL_COLOR_ARRAYglColorPointer 
GL_COLOR_LOGIC_OPglLogicOp 
GL_COLOR_MATERIALglColorMaterial 
GL_CULL_FACEglCullFace 
GL_DEPTH_TESTglDepthFunc, glDepthRange 
GL_DITHERglEnable 
GL_EDGE_FLAG_ARRAYglEdgeFlagPointer 
GL_FOGglFog 
GL_INDEX_ARRAYglIndexPointer 
GL_INDEX_LOGIC_OPglLogicOp 
GL_LIGHTiglLightModel, glLight 
GL_LIGHTINGglMaterial, glLightModel, glLight 
GL_LINE_SMOOTHglLineWidth 
GL_LINE_STIPPLEglLineStipple 
GL_MAP1_COLOR_4glMap1, glMap2 
GL_MAP2_TEXTURE_COORD_2glMap2 
GL_MAP2_TEXTURE_COORD_3glMap2 
GL_MAP2_TEXTURE_COORD_4glMap2 
GL_MAP2_VERTEX_3glMap2 
GL_MAP2_VERTEX_4glMap2 
GL_NORMAL_ARRAYglNormalPointer 
GL_NORMALIZEglNormal 
GL_POINT_SMOOTHglPointSize 
GL_POLYGON_SMOOTHglPolygonMode 
GL_POLYGON_OFFSET_FILLglPolygonOffset 
GL_POLYGON_OFFSET_LINEglPolygonOffset 
GL_POLYGON_OFFSET_POINTglPolygonOffset 
GL_POLYGON_STIPPLEglPolygonStipple 
GL_SCISSOR_TESTglScissor 
GL_STENCIL_TESTglStencilFunc, glStencilOp 
GL_TEXTURE_1DglTexImage1D 
GL_TEXTURE_2DglTexImage2D 
GL_TEXTURE_COORD_ARRAYglTexCoordPointer 
GL_TEXTURE_GEN_QglTexGen 
GL_TEXTURE_GEN_RglTexGen 
GL_TEXTURE_GEN_SglTexGen 
GL_TEXTURE_GEN_TglTexGen 
GL_VERTEX_ARRAYglVertexPointer 

NOTES

If an error is generated, glIsEnabled returns 0.

GL_COLOR_LOGIC_OP, GL_COLOR_ARRAY, GL_EDGE_FLAG_ARRAY, GL_INDEX_ARRAY, GL_INDEX_LOGIC_OP, GL_NORMAL_ARRAY, GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE, GL_POLYGON_OFFSET_POINT, GL_TEXTURE_COORD_ARRAY, and GL_VERTEX_ARRAY are only available if the GL version is 1.1 or greater

ERRORS

GL_INVALID_ENUM is generated if cap is not an accepted value.

GL_INVALID_OPERATION is generated if glIsEnabled is executed between the execution of glBegin and the corresponding execution of glEnd.

SEE ALSO

glEnable, glEnableClientState
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