mirror of
https://github.com/godotengine/godot
synced 2024-09-19 20:41:28 +00:00
b5334d14f7
Happy new year to the wonderful Godot community!
2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.
We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)
Here's to a great year 2021 for all Godot users 🎆
285 lines
8.7 KiB
C++
285 lines
8.7 KiB
C++
/*************************************************************************/
|
|
/* typedefs.h */
|
|
/*************************************************************************/
|
|
/* 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. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef TYPEDEFS_H
|
|
#define TYPEDEFS_H
|
|
|
|
#include <stddef.h>
|
|
|
|
/**
|
|
* Basic definitions and simple functions to be used everywhere.
|
|
*/
|
|
|
|
// Include first in case the platform needs to pre-define/include some things.
|
|
#include "platform_config.h"
|
|
|
|
// Should be available everywhere.
|
|
#include "core/error/error_list.h"
|
|
#include <cstdint>
|
|
|
|
// Turn argument to string constant:
|
|
// https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html#Stringizing
|
|
#ifndef _STR
|
|
#define _STR(m_x) #m_x
|
|
#define _MKSTR(m_x) _STR(m_x)
|
|
#endif
|
|
|
|
// Should always inline no matter what.
|
|
#ifndef _ALWAYS_INLINE_
|
|
#if defined(__GNUC__)
|
|
#define _ALWAYS_INLINE_ __attribute__((always_inline)) inline
|
|
#elif defined(_MSC_VER)
|
|
#define _ALWAYS_INLINE_ __forceinline
|
|
#else
|
|
#define _ALWAYS_INLINE_ inline
|
|
#endif
|
|
#endif
|
|
|
|
// Should always inline, except in debug builds because it makes debugging harder.
|
|
#ifndef _FORCE_INLINE_
|
|
#ifdef DISABLE_FORCED_INLINE
|
|
#define _FORCE_INLINE_ inline
|
|
#else
|
|
#define _FORCE_INLINE_ _ALWAYS_INLINE_
|
|
#endif
|
|
#endif
|
|
|
|
// Windows badly defines a lot of stuff we'll never use. Undefine it.
|
|
#ifdef _WIN32
|
|
#undef min // override standard definition
|
|
#undef max // override standard definition
|
|
#undef ERROR // override (really stupid) wingdi.h standard definition
|
|
#undef DELETE // override (another really stupid) winnt.h standard definition
|
|
#undef MessageBox // override winuser.h standard definition
|
|
#undef MIN // override standard definition
|
|
#undef MAX // override standard definition
|
|
#undef CLAMP // override standard definition
|
|
#undef Error
|
|
#undef OK
|
|
#undef CONNECT_DEFERRED // override from Windows SDK, clashes with Object enum
|
|
#endif
|
|
|
|
// Generic ABS function, for math uses please use Math::abs.
|
|
#ifndef ABS
|
|
#define ABS(m_v) (((m_v) < 0) ? (-(m_v)) : (m_v))
|
|
#endif
|
|
|
|
#ifndef SGN
|
|
#define SGN(m_v) (((m_v) == 0) ? (0.0) : (((m_v) < 0) ? (-1.0) : (+1.0)))
|
|
#endif
|
|
|
|
#ifndef MIN
|
|
#define MIN(m_a, m_b) (((m_a) < (m_b)) ? (m_a) : (m_b))
|
|
#endif
|
|
|
|
#ifndef MAX
|
|
#define MAX(m_a, m_b) (((m_a) > (m_b)) ? (m_a) : (m_b))
|
|
#endif
|
|
|
|
#ifndef CLAMP
|
|
#define CLAMP(m_a, m_min, m_max) (((m_a) < (m_min)) ? (m_min) : (((m_a) > (m_max)) ? m_max : m_a))
|
|
#endif
|
|
|
|
// Generic swap template.
|
|
#ifndef SWAP
|
|
#define SWAP(m_x, m_y) __swap_tmpl((m_x), (m_y))
|
|
template <class T>
|
|
inline void __swap_tmpl(T &x, T &y) {
|
|
T aux = x;
|
|
x = y;
|
|
y = aux;
|
|
}
|
|
#endif // SWAP
|
|
|
|
/* Functions to handle powers of 2 and shifting. */
|
|
|
|
// Function to find the next power of 2 to an integer.
|
|
static _FORCE_INLINE_ unsigned int next_power_of_2(unsigned int x) {
|
|
if (x == 0) {
|
|
return 0;
|
|
}
|
|
|
|
--x;
|
|
x |= x >> 1;
|
|
x |= x >> 2;
|
|
x |= x >> 4;
|
|
x |= x >> 8;
|
|
x |= x >> 16;
|
|
|
|
return ++x;
|
|
}
|
|
|
|
// Function to find the previous power of 2 to an integer.
|
|
static _FORCE_INLINE_ unsigned int previous_power_of_2(unsigned int x) {
|
|
x |= x >> 1;
|
|
x |= x >> 2;
|
|
x |= x >> 4;
|
|
x |= x >> 8;
|
|
x |= x >> 16;
|
|
return x - (x >> 1);
|
|
}
|
|
|
|
// Function to find the closest power of 2 to an integer.
|
|
static _FORCE_INLINE_ unsigned int closest_power_of_2(unsigned int x) {
|
|
unsigned int nx = next_power_of_2(x);
|
|
unsigned int px = previous_power_of_2(x);
|
|
return (nx - x) > (x - px) ? px : nx;
|
|
}
|
|
|
|
// Get a shift value from a power of 2.
|
|
static inline int get_shift_from_power_of_2(unsigned int p_bits) {
|
|
for (unsigned int i = 0; i < 32; i++) {
|
|
if (p_bits == (unsigned int)(1 << i)) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
template <class T>
|
|
static _FORCE_INLINE_ T nearest_power_of_2_templated(T x) {
|
|
--x;
|
|
|
|
// The number of operations on x is the base two logarithm
|
|
// of the number of bits in the type. Add three to account
|
|
// for sizeof(T) being in bytes.
|
|
size_t num = get_shift_from_power_of_2(sizeof(T)) + 3;
|
|
|
|
// If the compiler is smart, it unrolls this loop.
|
|
// If it's dumb, this is a bit slow.
|
|
for (size_t i = 0; i < num; i++) {
|
|
x |= x >> (1 << i);
|
|
}
|
|
|
|
return ++x;
|
|
}
|
|
|
|
// Function to find the nearest (bigger) power of 2 to an integer.
|
|
static inline unsigned int nearest_shift(unsigned int p_number) {
|
|
for (int i = 30; i >= 0; i--) {
|
|
if (p_number & (1 << i)) {
|
|
return i + 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// constexpr function to find the floored log2 of a number
|
|
template <typename T>
|
|
constexpr T floor_log2(T x) {
|
|
return x < 2 ? x : 1 + floor_log2(x >> 1);
|
|
}
|
|
|
|
// Get the number of bits needed to represent the number.
|
|
// IE, if you pass in 8, you will get 4.
|
|
// If you want to know how many bits are needed to store 8 values however, pass in (8 - 1).
|
|
template <typename T>
|
|
constexpr T get_num_bits(T x) {
|
|
return floor_log2(x);
|
|
}
|
|
|
|
// Swap 16, 32 and 64 bits value for endianness.
|
|
#if defined(__GNUC__)
|
|
#define BSWAP16(x) __builtin_bswap16(x)
|
|
#define BSWAP32(x) __builtin_bswap32(x)
|
|
#define BSWAP64(x) __builtin_bswap64(x)
|
|
#else
|
|
static inline uint16_t BSWAP16(uint16_t x) {
|
|
return (x >> 8) | (x << 8);
|
|
}
|
|
|
|
static inline uint32_t BSWAP32(uint32_t x) {
|
|
return ((x << 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) | (x >> 24));
|
|
}
|
|
|
|
static inline uint64_t BSWAP64(uint64_t x) {
|
|
x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32;
|
|
x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16;
|
|
x = (x & 0x00FF00FF00FF00FF) << 8 | (x & 0xFF00FF00FF00FF00) >> 8;
|
|
return x;
|
|
}
|
|
#endif
|
|
|
|
// Generic comparator used in Map, List, etc.
|
|
template <class T>
|
|
struct Comparator {
|
|
_ALWAYS_INLINE_ bool operator()(const T &p_a, const T &p_b) const { return (p_a < p_b); }
|
|
};
|
|
|
|
// Global lock macro, relies on the static Mutex::_global_mutex.
|
|
void _global_lock();
|
|
void _global_unlock();
|
|
|
|
struct _GlobalLock {
|
|
_GlobalLock() { _global_lock(); }
|
|
~_GlobalLock() { _global_unlock(); }
|
|
};
|
|
|
|
#define GLOBAL_LOCK_FUNCTION _GlobalLock _global_lock_;
|
|
|
|
#if defined(__GNUC__)
|
|
#define likely(x) __builtin_expect(!!(x), 1)
|
|
#define unlikely(x) __builtin_expect(!!(x), 0)
|
|
#else
|
|
#define likely(x) x
|
|
#define unlikely(x) x
|
|
#endif
|
|
|
|
#if defined(__GNUC__)
|
|
#define _PRINTF_FORMAT_ATTRIBUTE_2_0 __attribute__((format(printf, 2, 0)))
|
|
#define _PRINTF_FORMAT_ATTRIBUTE_2_3 __attribute__((format(printf, 2, 3)))
|
|
#else
|
|
#define _PRINTF_FORMAT_ATTRIBUTE_2_0
|
|
#define _PRINTF_FORMAT_ATTRIBUTE_2_3
|
|
#endif
|
|
|
|
// This is needed due to a strange OpenGL API that expects a pointer
|
|
// type for an argument that is actually an offset.
|
|
#define CAST_INT_TO_UCHAR_PTR(ptr) ((uint8_t *)(uintptr_t)(ptr))
|
|
|
|
// Home-made index sequence trick, so it can be used everywhere without the costly include of std::tuple.
|
|
// https://stackoverflow.com/questions/15014096/c-index-of-type-during-variadic-template-expansion
|
|
template <size_t... Is>
|
|
struct IndexSequence {};
|
|
|
|
template <size_t N, size_t... Is>
|
|
struct BuildIndexSequence : BuildIndexSequence<N - 1, N - 1, Is...> {};
|
|
|
|
template <size_t... Is>
|
|
struct BuildIndexSequence<0, Is...> : IndexSequence<Is...> {};
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
#define DEBUG_METHODS_ENABLED
|
|
#endif
|
|
|
|
#endif // TYPEDEFS_H
|