table of contents
| GL_POINTCOORD(3G) | [FIXME: manual] | GL_POINTCOORD(3G) |
NAME¶
gl_PointCoord - contains the coordinate of a fragment within a point
DECLARATION¶
in vec2 gl_PointCoord ;.SH "DESCRIPTION"
gl_PointCoord is a fragment language input variable that contains the two-dimensional coordinates indicating where within a point primitive the current fragment is located. If the current primitive is not a point, then values read from gl_PointCoord are undefined.
gl_PointCoord.s ranges from 0.0 to 1.0 across the point horizontally from left to right. If GL_POINT_SPRITE_COORD_ORIGIN is GL_LOWER_LEFT, gl_PointCoord.t varies from 0.0 to 1.0 vertically from bottom to top. Otherwise, if GL_POINT_SPRITE_COORD_ORIGIN is GL_UPPER_LEFT then gl_PointCoord.t varies from 0.0 to 1.0 vertically from top to bottom. The default value of GL_POINT_SPRITE_COORD_ORIGIN is GL_UPPER_LEFT.
VERSION SUPPORT¶
| OpenGL Shading Language Version | ||||||||||||
| Variable Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
| gl_PointCoord | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSO¶
gl_FragCoord(), gl_FragDepth()
COPYRIGHT¶
Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.
COPYRIGHT¶
Copyright © 2011-2014 Khronos Group
| 05/21/2015 | [FIXME: source] |