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glIsEnabled.3gl
Langue: en
Version: 381917 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
NAME
glIsEnabled - test whether a capability is enabledC SPECIFICATION
GLboolean glIsEnabled( GLenum cap )PARAMETERS
- cap
- Specifies a symbolic constant indicating a GL capability.
DESCRIPTION
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_ALPHA_TEST | glAlphaFunc |
GL_AUTO_NORMAL | glEvalCoord |
GL_BLEND | glBlendFunc, glLogicOp |
GL_CLIP_PLANEi | glClipPlane |
GL_COLOR_ARRAY | glColorPointer |
GL_COLOR_LOGIC_OP | glLogicOp |
GL_COLOR_MATERIAL | glColorMaterial |
GL_COLOR_TABLE | glColorTable |
GL_CONVOLUTION_1D | glConvolutionFilter1D |
GL_CONVOLUTION_2D | glConvolutionFilter2D |
GL_CULL_FACE | glCullFace |
GL_DEPTH_TEST | glDepthFunc, glDepthRange |
GL_DITHER | glEnable |
GL_EDGE_FLAG_ARRAY | glEdgeFlagPointer |
GL_FOG | glFog |
GL_HISTOGRAM | glHistogram |
GL_INDEX_ARRAY | glIndexPointer |
GL_INDEX_LOGIC_OP | glLogicOp |
GL_LIGHTi | glLightModel, glLight |
GL_LIGHTING | glMaterial, glLightModel, glLight |
GL_LINE_SMOOTH | glLineWidth |
GL_LINE_STIPPLE | glLineStipple |
GL_MAP1_COLOR_4 | glMap1 |
GL_MAP1_INDEX | glMap1 |
GL_MAP1_NORMAL | glMap1 |
GL_MAP1_TEXTURE_COORD_1 | glMap1 |
GL_MAP1_TEXTURE_COORD_2 | glMap1 |
GL_MAP1_TEXTURE_COORD_3 | glMap1 |
GL_MAP1_TEXTURE_COORD_4 | glMap1 |
GL_MAP2_COLOR_4 | glMap2 |
GL_MAP2_INDEX | glMap2 |
GL_MAP2_NORMAL | glMap2 |
GL_MAP2_TEXTURE_COORD_1 | glMap2 |
GL_MAP2_TEXTURE_COORD_2 | glMap2 |
GL_MAP2_TEXTURE_COORD_3 | glMap2 |
GL_MAP2_TEXTURE_COORD_4 | glMap2 |
GL_MAP2_VERTEX_3 | glMap2 |
GL_MAP2_VERTEX_4 | glMap2 |
GL_MINMAX | glMinmax |
GL_NORMAL_ARRAY | glNormalPointer |
GL_NORMALIZE | glNormal |
GL_POINT_SMOOTH | glPointSize |
GL_POLYGON_SMOOTH | glPolygonMode |
GL_POLYGON_OFFSET_FILL | glPolygonOffset |
GL_POLYGON_OFFSET_LINE | glPolygonOffset |
GL_POLYGON_OFFSET_POINT | glPolygonOffset |
GL_POLYGON_STIPPLE | glPolygonStipple |
GL_POST_COLOR_MATRIX_COLOR_TABLE | glColorTable |
GL_POST_CONVOLUTION_COLOR_TABLE | glColorTable |
GL_RESCALE_NORMAL | glNormal |
GL_SCISSOR_TEST | glScissor |
GL_SEPARABLE_2D | glSeparableFilter2D |
GL_STENCIL_TEST | glStencilFunc, glStencilOp |
GL_TEXTURE_1D | glTexImage1D |
GL_TEXTURE_2D | glTexImage2D |
GL_TEXTURE_3D | glTexImage3D |
GL_TEXTURE_COORD_ARRAY | glTexCoordPointer |
GL_TEXTURE_GEN_Q | glTexGen |
GL_TEXTURE_GEN_R | glTexGen |
GL_TEXTURE_GEN_S | glTexGen |
GL_TEXTURE_GEN_T | glTexGen |
GL_VERTEX_ARRAY | glVertexPointer |
|
NOTES
If an error is generated, glIsEnabled returns 0. GL_COLOR_LOGIC_OP, GL_COLOR_ARRAY, GL_EDGE_FLAG_ARRAY, GL_INDEX_ARRAY, GL_INDEX_LOGIC_OP, GL_NORMAL_ARRAY, GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE, GL_POLYGON_OFFSET_POINT, GL_TEXTURE_COORD_ARRAY, and GL_VERTEX_ARRAY are available only if the GL version is 1.1 or greater GL_RESCALE_NORMAL, and GL_TEXTURE_3D are available only if the GL version is 1.2 or greater. GL_COLOR_TABLE, GL_CONVOLUTION_1D, GL_CONVOLUTION_2D, GL_HISTOGRAM, GL_MINMAX, GL_POST_COLOR_MATRIX_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, and GL_SEPARABLE_2D are available only if GL_ARB_imaging is returned when glGet is called with GL_EXTENSIONS. When the GL_ARB_multitexture extension is supported, the following parameters return the associated value for the active texture unit. GL_TEXTURE_1D, GL_TEXTURE_BINDING_1D, GL_TEXTURE_2D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_3D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_GEN_S, GL_TEXTURE_GEN_T, GL_TEXTURE_GEN_R, GL_TEXTURE_GEN_Q, GL_TEXTURE_MATRIX, and GL_TEXTURE_STACK_DEPTH. Likewise, the following parameters return the associated value for the active client texture unit: GL_TEXTURE_COORD_ARRAY, GL_TEXTURE_COORD_ARRAY_SIZE, GL_TEXTURE_COORD_ARRAY_STRIDE, GL_TEXTURE_COORD_ARRAY_TYPE.ERRORS
GL_INVALID_ENUM is generated if cap is not an accepted value. GL_INVALID_OPERATION is generated if glIsEnabled is executed between the execution of glBegin and the corresponding execution of glEnd.SEE ALSO
glEnable(3G), glEnableClientState(3G), glGet(3G)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre