Perl substr or similar help Post: 303025202

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glpassthrough

GLPASSTHROUGH(3G)														 GLPASSTHROUGH(3G)

NAME

       glPassThrough - place a marker in the feedback buffer

C SPECIFICATION

       void glPassThrough( GLfloat token )

PARAMETERS

       token  Specifies a marker value to be placed in the feedback buffer following a GL_PASS_THROUGH_TOKEN.

DESCRIPTION

       Feedback  is  a GL render mode.	The mode is selected by calling glRenderMode with GL_FEEDBACK.	When the GL is in feedback mode, no pixels
       are produced by rasterization.  Instead, information about primitives that would have been rasterized is fed back to the application  using
       the GL.	See the glFeedbackBuffer reference page for a description of the feedback buffer and the values in it.

       glPassThrough inserts a user-defined marker in the feedback buffer when it is executed in feedback mode.  token is returned as if it were a
       primitive; it is indicated with its own unique identifying value: GL_PASS_THROUGH_TOKEN.  The order of glPassThrough commands with  respect
       to the specification of graphics primitives is maintained.

NOTES

       glPassThrough is ignored if the GL is not in feedback mode.

ERRORS

       GL_INVALID_OPERATION is generated if glPassThrough is executed between the execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS

       glGet with argument GL_RENDER_MODE

SEE ALSO

       glFeedbackBuffer(3G), glRenderMode(3G)

																 GLPASSTHROUGH(3G)