120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
// Filename: glGeomContext_src.cxx
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// Created by: drose (19Mar04)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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TypeHandle CLP(GeomContext)::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: CLP(GeomContext)::Destructor
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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CLP(GeomContext)::
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~CLP(GeomContext)() {
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nassertv(_display_lists.empty());
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}
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///////////////////////////////////////////////////////////////////
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// Function: CLP(GeomContext)::get_display_list
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// Access: Public
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// Description: Looks up the display list index associated with the
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// indicated munger, or creates a new one if the munger
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// has not yet been used to render this context. Fills
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// index with the display list index, and returns true
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// if the display list is current (that is, it has the
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// same modified stamp).
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////////////////////////////////////////////////////////////////////
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bool CLP(GeomContext)::
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get_display_list(GLuint &index, const CLP(GeomMunger) *munger,
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UpdateSeq modified) {
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DisplayList &dl = _display_lists[(CLP(GeomMunger) *)munger];
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bool list_current = (dl._modified == modified);
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if (dl._index == 0) {
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dl._index = GLP(GenLists)(1);
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list_current = false;
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if (munger != (CLP(GeomMunger) *)NULL) {
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((CLP(GeomMunger) *)munger)->_geom_contexts.insert(this);
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}
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}
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index = dl._index;
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dl._modified = modified;
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return list_current;
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}
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////////////////////////////////////////////////////////////////////
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// Function: CLP(GeomContext)::release_display_lists
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// Access: Public
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// Description: Called only from the draw thread by
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// GLGraphicsStateGuardian::release_geom(), this should
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// delete all of the queued display lists immediately.
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////////////////////////////////////////////////////////////////////
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void CLP(GeomContext)::
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release_display_lists() {
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if (_deprecated_index != 0) {
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if (GLCAT.is_debug()) {
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GLCAT.debug()
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<< "releasing index " << _deprecated_index << "\n";
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}
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GLP(DeleteLists)(_deprecated_index, 1);
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_deprecated_index = 0;
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}
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DisplayLists::iterator dli;
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for (dli = _display_lists.begin();
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dli != _display_lists.end();
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++dli) {
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CLP(GeomMunger) *munger = (*dli).first;
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const DisplayList &dl = (*dli).second;
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if (munger != (CLP(GeomMunger) *)NULL) {
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munger->_geom_contexts.erase(this);
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}
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if (GLCAT.is_debug()) {
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GLCAT.debug()
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<< "releasing index " << dl._index << "\n";
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}
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GLP(DeleteLists)(dl._index, 1);
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}
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_display_lists.clear();
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}
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////////////////////////////////////////////////////////////////////
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// Function: CLP(GeomContext)::remove_munger
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// Access: Public
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// Description: Called when a glGeomMunger that we are pointing to
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// destructs, this should remove the record of that
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// munger (and mark the display list for deletion).
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////////////////////////////////////////////////////////////////////
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void CLP(GeomContext)::
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remove_munger(CLP(GeomMunger) *munger) {
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DisplayLists::iterator dli = _display_lists.find(munger);
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nassertv(dli != _display_lists.end());
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GLuint index = (*dli).second._index;
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_display_lists.erase(dli);
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CLP(GraphicsStateGuardian) *glgsg;
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DCAST_INTO_V(glgsg, munger->get_gsg());
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// We can't delete the display list immediately, because we might be
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// running in any thread. Instead, enqueue the display list index
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// and let it get deleted at the end of the current or next frame.
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glgsg->record_deleted_display_list(index);
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}
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