Gambas Documentation - /comp/gb.opengl/gl/isenabled

/comp/gb.opengl/gl/isenabled

# Gl.IsEnabled (gb.opengl)

Static Function IsEnabled ( Capacity As Integer ) As Boolean

### 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

Gl.Enable, Gl.Disable,

- Gl.Get

See original documentation on OpenGL website