gl_VertexID.3G man page

gl_VertexID — contains the index of the current vertex


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

OpenGL Shading Language Version
Function 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

See Also



02/07/2018 [FIXME: source] [FIXME: manual]