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Portal occlusion culling

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Adds support for occlusion culling via rooms and portals.
This commit is contained in:
lawnjelly
2021-02-04 10:43:08 +00:00
parent b0b2b7df31
commit eb6f98ec55
78 changed files with 10865 additions and 45 deletions
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79
core/bitfield_dynamic.cpp Normal file
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/*************************************************************************/
/* bitfield_dynamic.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "bitfield_dynamic.h"
#include "core/os/memory.h"
#include <string.h>
void BitFieldDynamic::copy_from(const BitFieldDynamic &p_source) {
create(p_source.get_num_bits(), false);
memcpy(_data, p_source.get_data(), p_source.get_num_bytes());
}
void BitFieldDynamic::create(uint32_t p_num_bits, bool p_blank) {
// first delete any initial
destroy();
_num_bits = p_num_bits;
if (p_num_bits) {
_num_bytes = (p_num_bits / 8) + 1;
_data = (uint8_t *)memalloc(_num_bytes);
if (p_blank) {
blank(false);
}
}
}
void BitFieldDynamic::destroy() {
if (_data) {
memfree(_data);
_data = nullptr;
}
_num_bytes = 0;
_num_bits = 0;
}
void BitFieldDynamic::blank(bool p_set_or_zero) {
if (p_set_or_zero) {
memset(_data, 255, _num_bytes);
} else {
memset(_data, 0, _num_bytes);
}
}
void BitFieldDynamic::invert() {
for (uint32_t n = 0; n < _num_bytes; n++) {
_data[n] = ~_data[n];
}
}