Signature
Parameters
| Variables | Description |
|---|---|
| cap |
Specifies a symbolic constant indicating a GL capability.
|
| index |
Specifies the index of the capability.
|
Description
glIsEnabled
returns
GL_TRUE
if
cap
is an enabled capability
and returns
GL_FALSE
otherwise. Boolean states that are indexed may be tested with
glIsEnabledi
.
For
glIsEnabledi
,
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 | glBlendFunc , glLogicOp |
| GL_CLIP_DISTANCE i | glEnable |
| GL_COLOR_LOGIC_OP | glLogicOp |
| GL_CULL_FACE | glCullFace |
| GL_DEPTH_CLAMP | glEnable |
| GL_DEBUG_OUTPUT | glEnable |
| GL_DEBUG_OUTPUT_SYNCHRONOUS | 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_CUBE_MAP_SEAMLESS | glEnable |
Notes
GL_DEBUG_OUTPUT
and
GL_DEBUG_OUTPUT_SYNCHRONOUS
are available only if the GL version is 4.3 or greater.
Errors
GL_INVALID_ENUM
is generated if
cap
is not an accepted value.
GL_INVALID_VALUE
is generated by
glIsEnabledi
if
index
is outside the
valid range for the indexed state
cap
.
Version Support
| glIsEnabled | |
| glIsEnabledi |
See Also
Copyright
Copyright
1991-2006 Silicon Graphics, Inc.
Copyright
2010-2014 Khronos Group.
This document is licensed under the SGI
Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/
.
Sample Code References
The following code samples have been found which appear to reference the functions described here. Take care that the code may be old, broken or not even use PyOpenGL.
glIsEnabled