GL_PRIMITIVEIDIN(3G)

    .SH "NAME" gl_PrimitiveIDIn - contains the index of the current primitive
    .SH "DECLARATION"

            in
            highp int
            gl_PrimitiveIDIn
        ;

    .SH "DESCRIPTION"
        .PP gl_PrimitiveIDIn is a geometry language input variable that holds the number of primitives processed by the shader since the current set of rendering primitives was started. The first primitive processed by the drawing command is numbered zero and the primitive ID counter is incremented after every individual point, line or triangle primitive is processed. For triangles drawn in point or line mode, the primitive ID counter is incremented only once, even through multiple points or lines may actually be drawn. Restarting a primitive topology using the primitive restart index has no effect on the primitive ID counter.

    .SH "VERSION SUPPORT"
        .TS allbox tab(:); l l l l l. T{ gl_PrimitiveIDIn T}:T{ T}:T{ T}:T{ T}:T{ T}

    .SH "SEE ALSO"
        .PP gl_InstanceID()

    .SH "COPYRIGHT"
        .PP Copyright © 2011-2015 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 © 2011-2015 Khronos Group