1GLPASSTHROUGH(3G)                OpenGL Manual               GLPASSTHROUGH(3G)
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NAME

6       glPassThrough - place a marker in the feedback buffer
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C SPECIFICATION

9       void glPassThrough(GLfloat token);
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PARAMETERS

12       token
13           Specifies a marker value to be placed in the feedback buffer
14           following a GL_PASS_THROUGH_TOKEN.
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DESCRIPTION

17       Feedback is a GL render mode. The mode is selected by calling
18       glRenderMode() with GL_FEEDBACK. When the GL is in feedback mode, no
19       pixels are produced by rasterization. Instead, information about
20       primitives that would have been rasterized is fed back to the
21       application using the GL. See the glFeedbackBuffer() reference page for
22       a description of the feedback buffer and the values in it.
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24       glPassThrough inserts a user-defined marker in the feedback buffer when
25       it is executed in feedback mode.  token is returned as if it were a
26       primitive; it is indicated with its own unique identifying value:
27       GL_PASS_THROUGH_TOKEN. The order of glPassThrough commands with respect
28       to the specification of graphics primitives is maintained.
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NOTES

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

34       GL_INVALID_OPERATION is generated if glPassThrough is executed between
35       the execution of glBegin() and the corresponding execution of glEnd().
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ASSOCIATED GETS

38       glGet() with argument GL_RENDER_MODE
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SEE ALSO

41       glFeedbackBuffer(), glRenderMode()
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44       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
45       under the SGI Free Software B License. For details, see
46       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

49       opengl.org
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53opengl.org                        06/10/2014                 GLPASSTHROUGH(3G)
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