Gl.IsEnabled (gb.opengl)

Parameters

cap

Specifies a symbolic constant indicating a GL capability.

index

Specifies the index of the capability.

Description

Gl.IsEnabled returns Gl.TRUE if cap is an enabled capability and returns Gl.FALSE otherwise. Boolean states that are indexed may be tested with Gl.IsEnabledi. For Gl.IsEnabledi, index specifies the index of the capability to test. index must be between zero and the count of indexed capabilities for cap. Initially all capabilities except Gl.DITHER are disabled; Gl.DITHER is initially enabled.

The following capabilities are accepted for cap:

Constant	See
Gl.BLEND	Gl.BlendFunc, Gl.LogicOp
Gl.CLIP_DISTANCEi	Gl.Enable
Gl.COLOR_LOGIC_OP	Gl.LogicOp
Gl.CULL_FACE	Gl.CullFace
Gl.DEPTH_CLAMP	Gl.Enable
Gl.DEPTH_TEST	Gl.DepthFunc, Gl.DepthRange
Gl.DITHER	Gl.Enable
Gl.FRAMEBUFFER_SRGB	Gl.Enable
Gl.LINE_SMOOTH	Gl.LineWidth
Gl.MULTISAMPLE	Gl.SampleCoverage
Gl.POLYGON_SMOOTH	Gl.PolygonMode
Gl.POLYGON_OFFSET_FILL	Gl.PolygonOffset
Gl.POLYGON_OFFSET_LINE	Gl.PolygonOffset
Gl.POLYGON_OFFSET_POINT	Gl.PolygonOffset
Gl.PROGRAM_POINT_SIZE	Gl.Enable
Gl.PRIMITIVE_RESTART	Gl.Enable, Gl.PrimitiveRestartIndex
Gl.SAMPLE_ALPHA_TO_COVERAGE	Gl.SampleCoverage
Gl.SAMPLE_ALPHA_TO_ONE	Gl.SampleCoverage
Gl.SAMPLE_COVERAGE	Gl.SampleCoverage
Gl.SAMPLE_MASK	Gl.Enable
Gl.SCISSOR_TEST	Gl.Scissor
Gl.STENCIL_TEST	Gl.StencilFunc, Gl.StencilOp
Gl.TEXTURE_CUBEMAP_SEAMLESS	Gl.Enable

Notes

If an error is generated, Gl.IsEnabled and Gl.IsEnabledi return Gl.FALSE.

Errors

Gl.INVALID_ENUM is generated if cap is not an accepted value.

Gl.INVALID_VALUE is generated by Gl.IsEnabledi if index is outside the valid range for the indexed state cap.

See also

See original documentation on OpenGL website