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gl_PointCoord — contains the coordinate of a fragment within a point


in mediump vec2 gl_PointCoord ;


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. gl_PointCoord.t varies from 0.0 to 1.0 vertically from top to bottom.

Version Support

OpenGL ES Shading Language Version
Variable Name 1.00 3.00 3.10
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