Hi all,
When a osg::StateAttribute uses a OpenGL mode than this mode
should be returned by osg::StateAttribute::getModeUsage(ModeUsage&).
osg::Material does this, but also calls glEnable/glDisable
in osg::Material::apply(State&):
(current cvs version)
void Material::apply(State&) const
{
if (_colorMode==OFF)
{
>>> glDisable(GL_COLOR_MATERIAL);
glColor4fv(_diffuseFront.ptr());
}
else
{
>>> glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT_AND_BACK,(GLenum)_colorMode);
switch(_colorMode)
{
case(AMBIENT): glColor4fv(_ambientFront.ptr()); break;
case(DIFFUSE): glColor4fv(_diffuseFront.ptr()); break;
case(SPECULAR): glColor4fv(_specularFront.ptr()); break;
case(EMISSION): glColor4fv(_emissionFront.ptr()); break;
case(AMBIENT_AND_DIFFUSE): glColor4fv(_diffuseFront.ptr()); break;
case(OFF): break;
}
}
....
}
The calls of glEnable/glDisable will cause an invalid osg::ModeStack.
These two calls shouldn't be there and osg::Material::getModeUsage(ModeUsage&)
should look like this.
bool MaterialgetModeUsage(ModeUsage& usage) const
{
if (_colorMode == OFF) {
return false;
}
else {
usage.usesMode(GL_COLOR_MATERIAL);
return true;
}
}
Daniel
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