89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
// Filename: displayRegionDrawCallbackData.cxx
|
|
// Created by: drose (13Mar09)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) Carnegie Mellon University. All rights reserved.
|
|
//
|
|
// All use of this software is subject to the terms of the revised BSD
|
|
// license. You should have received a copy of this license along
|
|
// with this source code in a file named "LICENSE."
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "displayRegionDrawCallbackData.h"
|
|
#include "cullResult.h"
|
|
#include "sceneSetup.h"
|
|
|
|
TypeHandle DisplayRegionDrawCallbackData::_type_handle;
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DisplayRegionDrawCallbackData::Constructor
|
|
// Access: Public
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
DisplayRegionDrawCallbackData::
|
|
DisplayRegionDrawCallbackData(CullResult *cull_result, SceneSetup *scene_setup) :
|
|
_cull_result(cull_result),
|
|
_scene_setup(scene_setup)
|
|
{
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DisplayRegionDrawCallbackData::output
|
|
// Access: Published, Virtual
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
void DisplayRegionDrawCallbackData::
|
|
output(ostream &out) const {
|
|
out << get_type() << "(" << (void *)_cull_result << ", "
|
|
<< (void *)_scene_setup << ")";
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DisplayRegionDrawCallbackData::upcall
|
|
// Access: Published, Virtual
|
|
// Description: You should make this call during the callback if you
|
|
// want to continue the normal rendering function that
|
|
// would have been done in the absence of a callback.
|
|
//
|
|
// Specifically, this method will draw all of the
|
|
// objects in the CullResult list that have been built
|
|
// up for the DisplayRegion during the cull traversal.
|
|
////////////////////////////////////////////////////////////////////
|
|
void DisplayRegionDrawCallbackData::
|
|
upcall() {
|
|
Thread *current_thread = Thread::get_current_thread();
|
|
DisplayRegion *dr = _scene_setup->get_display_region();
|
|
GraphicsStateGuardian *gsg = dr->get_window()->get_gsg();
|
|
|
|
if (_cull_result == NULL || _scene_setup == NULL) {
|
|
// Nothing to see here.
|
|
|
|
} else if (dr->is_stereo()) {
|
|
// We don't actually draw the stereo DisplayRegions. These are
|
|
// just placeholders; we draw the individual left and right eyes
|
|
// instead. (We might still clear the stereo DisplayRegions,
|
|
// though, since it's probably faster to clear right and left
|
|
// channels in one pass, than to clear them in two separate
|
|
// passes.)
|
|
|
|
} else if (!gsg->set_scene(_scene_setup)) {
|
|
// The scene or lens is inappropriate somehow.
|
|
display_cat.error()
|
|
<< gsg->get_type() << " cannot render scene with specified lens.\n";
|
|
|
|
} else {
|
|
// Tell the GSG to forget its state.
|
|
gsg->clear_state_and_transform();
|
|
|
|
if (gsg->begin_scene()) {
|
|
_cull_result->draw(current_thread);
|
|
gsg->end_scene();
|
|
}
|
|
}
|
|
}
|
|
|