💿🐜 Antkeeper source code
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
2.4 KiB
77 lines
2.4 KiB
/*
|
|
* Copyright (C) 2023 Christopher J. Howard
|
|
*
|
|
* This file is part of Antkeeper source code.
|
|
*
|
|
* Antkeeper source code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Antkeeper source code is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "render/stage/culling-stage.hpp"
|
|
#include "scene/camera.hpp"
|
|
#include "scene/collection.hpp"
|
|
#include <algorithm>
|
|
#include <execution>
|
|
#include <mutex>
|
|
|
|
namespace render {
|
|
|
|
void culling_stage::execute(render::context& ctx) const
|
|
{
|
|
// Get list of all objects in the collection
|
|
const std::list<scene::object_base*>& objects = *(ctx.collection->get_objects());
|
|
|
|
// Get camera culling volume
|
|
ctx.camera_culling_volume = ctx.camera->get_culling_mask();
|
|
if (!ctx.camera_culling_volume)
|
|
ctx.camera_culling_volume = &ctx.camera->get_world_bounds();
|
|
|
|
// Clear set of visible objects
|
|
ctx.visible_objects.clear();
|
|
|
|
// Construct mutex to guard set of visible objects
|
|
std::mutex mutex;
|
|
|
|
// For each object in the scene collection
|
|
std::for_each
|
|
(
|
|
std::execution::par,
|
|
std::begin(objects),
|
|
std::end(objects),
|
|
[&](scene::object_base* object)
|
|
{
|
|
// Ignore inactive objects and cameras
|
|
if (!object->is_active() || object->get_object_type_id() == scene::camera::object_type_id)
|
|
return;
|
|
|
|
// Cull object if it doesn't share any common layers with the camera
|
|
//if (!(object->get_layer_mask() & camera_layer_mask))
|
|
// return;
|
|
|
|
// Get object culling volume
|
|
const geom::bounding_volume<float>* object_culling_volume = object->get_culling_mask();
|
|
if (!object_culling_volume)
|
|
object_culling_volume = &object->get_world_bounds();
|
|
|
|
// Cull object if it's outside of the camera culling volume
|
|
if (!ctx.camera_culling_volume->intersects(*object_culling_volume))
|
|
return;
|
|
|
|
// Insert object into set of visible objects
|
|
std::lock_guard<std::mutex> guard(mutex);
|
|
ctx.visible_objects.push_back(object);
|
|
}
|
|
);
|
|
}
|
|
|
|
} // namespace render
|