| GLISENABLED(3G) | OpenGL 3.3 | GLISENABLED(3G) |
glIsEnabled - test whether a capability is enabled
GLboolean glIsEnabled(GLenum cap);
cap
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:
| Constant | See |
| GL_BLEND | glBlendFunc(), glLogicOp() |
| GL_CLIP_DISTANCEi | glEnable() |
| GL_COLOR_LOGIC_OP | glLogicOp() |
| GL_CULL_FACE | glCullFace() |
| GL_DEPTH_CLAMP | 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_CUBEMAP_SEAMLESS | glEnable() |
If an error is generated, glIsEnabled returns GL_FALSE.
GL_INVALID_ENUM is generated if cap is not an accepted value.
glEnable(), glGet()
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
| 03/08/2011 | OpenGL 3.3 |