mirror of
https://github.com/QB64Official/qb64.git
synced 2024-09-28 11:17:47 +00:00
131 lines
3.2 KiB
Text
131 lines
3.2 KiB
Text
'''_glIsEnabled, glIsEnabledi:''' test whether a capability is enabled
|
|
|
|
|
|
{{PageSyntax}}
|
|
|
|
FUNCTION _glIsEnabled~%% (BYVAL cap AS _UNSIGNED LONG)
|
|
GLboolean '''_glIsEnabled'''(GLenum {{Parameter|cap}});
|
|
|
|
GLboolean '''_glIsEnabledi'''(GLenum {{Parameter|cap}}, GLuint {{Parameter|index}});
|
|
|
|
; cap
|
|
: Specifies a symbolic constant indicating a GL capability.
|
|
; index
|
|
: Specifies the index of the capability.
|
|
|
|
|
|
{{PageDescription}}
|
|
|
|
'''_glIsEnabled''' returns {{KW|_GL_TRUE}} if {{Parameter|cap}} is an enabled capability and returns {{KW|_GL_FALSE}} otherwise. Boolean states that are indexed may be tested with '''_glIsEnabledi'''. For '''_glIsEnabledi''', {{Parameter|index}} specifies the index of the capability to test. {{Parameter|index}} must be between zero and the count of indexed capabilities for {{Parameter|cap}}. Initially all capabilities except {{KW|_GL_DITHER}} are disabled; {{KW|_GL_DITHER}} is initially enabled.
|
|
|
|
The following capabilities are accepted for {{Parameter|cap}}:
|
|
|
|
|
|
|
|
{|
|
|
|+
|
|
! '''Constant'''
|
|
! '''See'''
|
|
|+
|
|
| {{KW|_GL_BLEND}}
|
|
| {{KW|_glBlendFunc}}, {{KW|_glLogicOp}}
|
|
|+
|
|
| {{KW|_GL_CLIP_DISTANCE}}''i''
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_COLOR_LOGIC_OP}}
|
|
| {{KW|_glLogicOp}}
|
|
|+
|
|
| {{KW|_GL_CULL_FACE}}
|
|
| {{KW|_glCullFace}}
|
|
|+
|
|
| {{KW|_GL_DEPTH_CLAMP}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_DEBUG_OUTPUT}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_DEBUG_OUTPUT_SYNCHRONOUS}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_DEPTH_TEST}}
|
|
| {{KW|_glDepthFunc}}, {{KW|_glDepthRange}}
|
|
|+
|
|
| {{KW|_GL_DITHER}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_FRAMEBUFFER_SRGB}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_LINE_SMOOTH}}
|
|
| {{KW|_glLineWidth}}
|
|
|+
|
|
| {{KW|_GL_MULTISAMPLE}}
|
|
| {{KW|_glSampleCoverage}}
|
|
|+
|
|
| {{KW|_GL_POLYGON_SMOOTH}}
|
|
| {{KW|_glPolygonMode}}
|
|
|+
|
|
| {{KW|_GL_POLYGON_OFFSET_FILL}}
|
|
| {{KW|_glPolygonOffset}}
|
|
|+
|
|
| {{KW|_GL_POLYGON_OFFSET_LINE}}
|
|
| {{KW|_glPolygonOffset}}
|
|
|+
|
|
| {{KW|_GL_POLYGON_OFFSET_POINT}}
|
|
| {{KW|_glPolygonOffset}}
|
|
|+
|
|
| {{KW|_GL_PROGRAM_POINT_SIZE}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_PRIMITIVE_RESTART}}
|
|
| {{KW|_glEnable}}, {{KW|_glPrimitiveRestartIndex}}
|
|
|+
|
|
| {{KW|_GL_SAMPLE_ALPHA_TO_COVERAGE}}
|
|
| {{KW|_glSampleCoverage}}
|
|
|+
|
|
| {{KW|_GL_SAMPLE_ALPHA_TO_ONE}}
|
|
| {{KW|_glSampleCoverage}}
|
|
|+
|
|
| {{KW|_GL_SAMPLE_COVERAGE}}
|
|
| {{KW|_glSampleCoverage}}
|
|
|+
|
|
| {{KW|_GL_SAMPLE_MASK}}
|
|
| {{KW|_glEnable}}
|
|
|+
|
|
| {{KW|_GL_SCISSOR_TEST}}
|
|
| {{KW|_glScissor}}
|
|
|+
|
|
| {{KW|_GL_STENCIL_TEST}}
|
|
| {{KW|_glStencilFunc}}, {{KW|_glStencilOp}}
|
|
|+
|
|
| {{KW|_GL_TEXTURE_CUBEMAP_SEAMLESS}}
|
|
| {{KW|_glEnable}}
|
|
|}
|
|
|
|
|
|
|
|
|
|
{{PageNotes}}
|
|
|
|
If an error is generated, '''_glIsEnabled''' and '''_glIsEnabledi''' return {{KW|_GL_FALSE}}.
|
|
|
|
{{KW|_GL_DEBUG_OUTPUT}} and {{KW|_GL_DEBUG_OUTPUT_SYNCHRONOUS}} are available only if the GL version is 4.3 or greater.
|
|
|
|
|
|
{{PageErrors}}
|
|
|
|
{{KW|_GL_INVALID_ENUM}} is generated if {{Parameter|cap}} is not an accepted value.
|
|
|
|
{{KW|_GL_INVALID_VALUE}} is generated by '''_glIsEnabledi''' if {{Parameter|index}} is outside the valid range for the indexed state {{Parameter|cap}}.
|
|
|
|
|
|
{{PageSeeAlso}}
|
|
|
|
[[_GL|SUB _GL]]
|
|
{{KW|_glEnable}}, {{KW|_glDisable}}, {{KW|_glGet}}
|
|
|
|
|
|
{{PageCopyright}}
|
|
|
|
Copyright 1991-2006 Silicon Graphics, Inc. Copyright 2010-2011 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see [http://oss.sgi.com/projects/FreeB/ http://oss.sgi.com/projects/FreeB/].
|