bool = gl.IsEnabled(cap)

The following capabilities are accepted for cap:

#GL_ALPHA_TEST

See gl.AlphaFunc for details.

#GL_AUTO_NORMAL

See gl.EvalCoord for details.

#GL_BLEND

See gl.BlendFunc for details. See gl.LogicOp for details.

#GL_CLIP_PLANEi

See gl.ClipPlane for details.

#GL_COLOR_ARRAY

See gl.ColorPointer for details.

#GL_COLOR_LOGIC_OP

See gl.LogicOp for details.

#GL_COLOR_MATERIAL

See gl.ColorMaterial for details.

#GL_CULL_FACE

See gl.CullFace for details.

#GL_DEPTH_TEST

See gl.DepthFunc for details. See gl.DepthRange for details.

#GL_DITHER

See gl.Enable for details.

#GL_EDGE_FLAG_ARRAY

See gl.EdgeFlagPointer for details.

#GL_FOG

See gl.Fog for details.

#GL_INDEX_ARRAY

See gl.IndexPointer for details.

#GL_INDEX_LOGIC_OP

See gl.LogicOp for details.

#GL_LIGHTi

See gl.LightModel for details. See gl.Light for details.

#GL_LIGHTING

See gl.Material for details. See gl.LightModel for details. See gl.Light for details.

#GL_LINE_SMOOTH

See gl.LineWidth for details.

#GL_LINE_STIPPLE

See gl.LineStipple for details.

#GL_MAP1_COLOR_4

See gl.Map for details.

#GL_MAP1_INDEX

See gl.Map for details.

#GL_MAP1_NORMAL

See gl.Map for details.

#GL_MAP1_TEXTURE_COORD_1

See gl.Map for details.

#GL_MAP1_TEXTURE_COORD_2

See gl.Map for details.

#GL_MAP1_TEXTURE_COORD_3

See gl.Map for details.

#GL_MAP1_TEXTURE_COORD_4

See gl.Map for details.

#GL_MAP2_COLOR_4

See gl.Map for details.

#GL_MAP2_INDEX

See gl.Map for details.

#GL_MAP2_NORMAL

See gl.Map for details.

#GL_MAP2_TEXTURE_COORD_1

See gl.Map for details.

#GL_MAP2_TEXTURE_COORD_2

See gl.Map for details.

#GL_MAP2_TEXTURE_COORD_3

See gl.Map for details.

#GL_MAP2_TEXTURE_COORD_4

See gl.Map for details.

#GL_MAP2_VERTEX_3

See gl.Map for details.

#GL_MAP2_VERTEX_4

See gl.Map for details.

#GL_NORMAL_ARRAY

See gl.NormalPointer for details.

#GL_NORMALIZE

See gl.Normal for details.

#GL_POINT_SMOOTH

See gl.PointSize for details.

#GL_POLYGON_SMOOTH

See gl.PolygonMode for details.

#GL_POLYGON_OFFSET_FILL

See gl.PolygonOffset for details.

#GL_POLYGON_OFFSET_LINE

See gl.PolygonOffset for details.

#GL_POLYGON_OFFSET_POINT

See gl.PolygonOffset for details.

#GL_POLYGON_STIPPLE

See gl.PolygonStipple for details.

#GL_RESCALE_NORMAL

See gl.Normal for details.

#GL_SCISSOR_TEST

See gl.Scissor for details.

#GL_STENCIL_TEST

See gl.StencilFunc for details. See gl.StencilOp for details.

#GL_TEXTURE_1D

See gl.TexImage1D for details.

#GL_TEXTURE_2D

See gl.TexImage2D for details.

#GL_TEXTURE_COORD_ARRAY

See gl.TexCoordPointer for details.

#GL_TEXTURE_GEN_Q

See gl.TexGen for details.

#GL_TEXTURE_GEN_R

See gl.TexGen for details.

#GL_TEXTURE_GEN_S

See gl.TexGen for details.

#GL_TEXTURE_GEN_T

See gl.TexGen for details.

#GL_VERTEX_ARRAY

See gl.VertexPointer for details.

If an error is generated, gl.IsEnabled() returns 0.

Please consult an OpenGL reference manual for more information.

cap

specifies a symbolic constant indicating a GL capability

bool

#GL_TRUE or #GL_FALSE

#GL_INVALID_OPERATION is generated if gl.IsEnabled() is executed between the execution of gl.Begin() and the corresponding execution of gl.End().