FGFS-4.1/OpenSceneGraph
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Moved the glShadeModel(FLAT/SMOOTH) outside of the primtitive inner loop to reduce

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the amount state changes incurred when using FLAT_ primtives.
This commit is contained in:
Robert Osfield 2002-01-02 10:53:20 +00:00
parent 03b161942b
commit e767db9182
1 changed files with 14 additions and 7 deletions
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21
src/osg/GeoSet_ogl.cpp
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@ -291,6 +291,13 @@ void GeoSet::draw_alternate_path( void )
return;
}
if( _flat_shaded_skip )
{
#ifdef DO_SHADING
glShadeModel( GL_FLAT );
#endif
}
for( i = 0; i < _numprims; i++ )
{
if( _color_binding == BIND_PERPRIM )
@ -310,9 +317,6 @@ void GeoSet::draw_alternate_path( void )
if( _flat_shaded_skip )
{
#ifdef DO_SHADING
glShadeModel( GL_FLAT );
#endif
glBegin( (GLenum)_oglprimtype );
for( j = 0; j < _primLengths[i]; j++ )
{
@ -349,10 +353,6 @@ void GeoSet::draw_alternate_path( void )
glArrayElement( ai++ );
}
glEnd();
#ifdef DO_SHADING
glShadeModel( GL_SMOOTH );
#endif
}
else
@ -394,6 +394,13 @@ void GeoSet::draw_alternate_path( void )
}
index += _primLengths[i];
}
if( _flat_shaded_skip )
{
#ifdef DO_SHADING
glShadeModel( GL_SMOOTH );
#endif
}
}
else // POINTS, LINES, TRIANGLES, QUADS
{