gl_VertexID.3G man page

gl_VertexID — contains the index of the current vertex

Declaration

in int gl_VertexID ;.SH "DESCRIPTION"

gl_VertexID is a vertex language input variable that holds an integer index for the vertex. The index is impliclty generated by glDrawArrays and other commands that do not reference the content of the GL_ELEMENT_ARRAY_BUFFER, or explicitly generated from the content of the GL_ELEMENT_ARRAY_BUFFER by commands such as glDrawElements.

Version Support

gl_VertexID

See Also

gl_InstanceID()

Info

02/04/2016 [FIXME: source] [FIXME: manual]