glIsEnabled,_glIsEnabledi.3G - Online Linux Manual Page

GLISENABLED - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
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NAMEglIsEnabled,_glIsEnabledi − test whether a capability is enabled

C SPECIFICATIONGLboolean glIsEnabled(GLenum cap); GLboolean glIsEnabledi(GLenum cap, GLuint index);

PARAMETERScap Specifies a symbolic constant indicating a GL capability. index Specifies the index of the capability.

DESCRIPTIONglIsEnabled 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_DISTANCEi 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()

NOTESIf an error is generated, glIsEnabled and glIsEnabledi return GL_FALSE. GL_DEBUG_OUTPUT and GL_DEBUG_OUTPUT_SYNCHRONOUS are available only if the GL version is 4.3 or greater.

ERRORSGL_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 OpenGL Version Function / Feature Name 2.0 none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'> 2.1 3.0 3.1 3.2 3.3 4.0 4.1 4.2 4.3 4.4 4.5 glIsEnabled ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ glIsEnabledi − − ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

SEE ALSOglEnable(), glDisable, glGet()

COPYRIGHTCopyright © 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/.

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