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Support for clipplane_x in shaders

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rdb 2009-04-29 18:26:34 +00:00
parent 5f206a1515
commit e5954e021b
1 changed files with 16 additions and 0 deletions
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16
panda/src/display/graphicsStateGuardian.cxx
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@ -1087,6 +1087,22 @@ fetch_specified_part(Shader::ShaderMatInput part, InternalName *name, LMatrix4f
t = LMatrix4f(0,0,0,0,0,0,0,0,0,0,0,0,p[0],p[1],p[2],p[3]);
return &t;
}
case Shader::SMO_clipplane_x: {
const ClipPlaneAttrib *cpa = DCAST(ClipPlaneAttrib, _target_rs->get_attrib_def(ClipPlaneAttrib::get_class_slot()));
int planenr = atoi(name->get_name().c_str());
if (planenr >= cpa->get_num_on_planes()) {
// The identity matrix happens to have 0,0,0,1 in the last row,
// which is exactly what we need, because that won't clip anything.
return &LMatrix4f::zeros_mat();
}
const NodePath &np = cpa->get_on_plane(planenr);
nassertr(!np.is_empty(), &LMatrix4f::zeros_mat());
nassertr(np.node()->is_of_type(PlaneNode::get_class_type()), &LMatrix4f::zeros_mat());
Planef p (DCAST(PlaneNode, np.node())->get_plane());
p.xform(np.get_net_transform()->get_mat()); // World-space
t = LMatrix4f(0,0,0,0,0,0,0,0,0,0,0,0,p[0],p[1],p[2],p[3]);
return &t;
}
case Shader::SMO_mat_constant_x: {
const NodePath &np = _target_shader->get_shader_input_nodepath(name);
nassertr(!np.is_empty(), &LMatrix4f::ident_mat());