mvSetMovieGLContextState(3dm)			 mvSetMovieGLContextState(3dm)

NAME    [Toc]    [Back]

     mvGetMovieGLContextState, mvSetMovieGLContextState	- set/get the
     GLContextState of a movie

SYNOPSIS    [Toc]    [Back]

     #include <dmedia/moviefile.h>

     DMstatus mvSetMovieGLContextState(	MVid track, DMboolean GLContextState);

     DMboolean mvGetMovieGLContextState( MVid track );

DESCRIPTION    [Toc]    [Back]

     When mvRenderMovieToOpenGL	is called, the movie library disables some of
     the unused	GL extensions in order to optimize the pixel path for drawing.
     Between two successive calls to mvRenderMovieToOpenGL, the	movie library,
     by	default, goes through the disabling routines to	make sure that the
     pixel path	is in the state	that it	needs to be in while it	is drawing and
     restores the graphics states when it is done drawing .  However, the
     overhead in changing the graphics states can be rather expensive.	If the
     user does not use the graphics states of the current context between
     successive	calls to mvRenderMovieToOpenGL,	the movie library can be
     instructed	to not toggle the graphics states.


     mvSetMovieGLContextState sets the graphics	context	state of a movie.  If
     set to DM_TRUE, the movie library assumes constant	context	state between
     successive	calls to mvRenderMovieToOpenGL.

     mvGetMovieGLContextState returns the GL context state the movie is	in.

     By	default, the GLContextState of a movie is DM_FALSE.

SEE ALSO    [Toc]    [Back]

     mvRenderMovieToOpenGL(3dm).


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