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Diffstat (limited to 'dependencies/SDL/SDL_hints.h')
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diff --git a/dependencies/SDL/SDL_hints.h b/dependencies/SDL/SDL_hints.h new file mode 100644 index 0000000..76a74f0 --- /dev/null +++ b/dependencies/SDL/SDL_hints.h @@ -0,0 +1,2569 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_hints.h + * + * Official documentation for SDL configuration variables + * + * This file contains functions to set and get configuration hints, + * as well as listing each of them alphabetically. + * + * The convention for naming hints is SDL_HINT_X, where "SDL_X" is + * the environment variable that can be used to override the default. + * + * In general these hints are just that - they may or may not be + * supported or applicable on any given platform, but they provide + * a way for an application or user to give the library a hint as + * to how they would like the library to work. + */ + +#ifndef SDL_hints_h_ +#define SDL_hints_h_ + +#include "SDL_stdinc.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief A variable controlling whether the Android / iOS built-in + * accelerometer should be listed as a joystick device. + * + * This variable can be set to the following values: + * "0" - The accelerometer is not listed as a joystick + * "1" - The accelerometer is available as a 3 axis joystick (the default). + */ +#define SDL_HINT_ACCELEROMETER_AS_JOYSTICK "SDL_ACCELEROMETER_AS_JOYSTICK" + +/** + * \brief Specify the behavior of Alt+Tab while the keyboard is grabbed. + * + * By default, SDL emulates Alt+Tab functionality while the keyboard is grabbed + * and your window is full-screen. This prevents the user from getting stuck in + * your application if you've enabled keyboard grab. + * + * The variable can be set to the following values: + * "0" - SDL will not handle Alt+Tab. Your application is responsible + for handling Alt+Tab while the keyboard is grabbed. + * "1" - SDL will minimize your window when Alt+Tab is pressed (default) +*/ +#define SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED "SDL_ALLOW_ALT_TAB_WHILE_GRABBED" + +/** + * \brief If set to "0" then never set the top most bit on a SDL Window, even if the video mode expects it. + * This is a debugging aid for developers and not expected to be used by end users. The default is "1" + * + * This variable can be set to the following values: + * "0" - don't allow topmost + * "1" - allow topmost + */ +#define SDL_HINT_ALLOW_TOPMOST "SDL_ALLOW_TOPMOST" + +/** + * \brief Android APK expansion main file version. Should be a string number like "1", "2" etc. + * + * Must be set together with SDL_HINT_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION. + * + * If both hints were set then SDL_RWFromFile() will look into expansion files + * after a given relative path was not found in the internal storage and assets. + * + * By default this hint is not set and the APK expansion files are not searched. + */ +#define SDL_HINT_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION "SDL_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION" + +/** + * \brief Android APK expansion patch file version. Should be a string number like "1", "2" etc. + * + * Must be set together with SDL_HINT_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION. + * + * If both hints were set then SDL_RWFromFile() will look into expansion files + * after a given relative path was not found in the internal storage and assets. + * + * By default this hint is not set and the APK expansion files are not searched. + */ +#define SDL_HINT_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION "SDL_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION" + +/** + * \brief A variable to control whether the event loop will block itself when the app is paused. + * + * The variable can be set to the following values: + * "0" - Non blocking. + * "1" - Blocking. (default) + * + * The value should be set before SDL is initialized. + */ +#define SDL_HINT_ANDROID_BLOCK_ON_PAUSE "SDL_ANDROID_BLOCK_ON_PAUSE" + +/** + * \brief A variable to control whether SDL will pause audio in background + * (Requires SDL_ANDROID_BLOCK_ON_PAUSE as "Non blocking") + * + * The variable can be set to the following values: + * "0" - Non paused. + * "1" - Paused. (default) + * + * The value should be set before SDL is initialized. + */ +#define SDL_HINT_ANDROID_BLOCK_ON_PAUSE_PAUSEAUDIO "SDL_ANDROID_BLOCK_ON_PAUSE_PAUSEAUDIO" + +/** + * \brief A variable to control whether we trap the Android back button to handle it manually. + * This is necessary for the right mouse button to work on some Android devices, or + * to be able to trap the back button for use in your code reliably. If set to true, + * the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of + * SDL_SCANCODE_AC_BACK. + * + * The variable can be set to the following values: + * "0" - Back button will be handled as usual for system. (default) + * "1" - Back button will be trapped, allowing you to handle the key press + * manually. (This will also let right mouse click work on systems + * where the right mouse button functions as back.) + * + * The value of this hint is used at runtime, so it can be changed at any time. + */ +#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON" + +/** + * \brief Specify an application name. + * + * This hint lets you specify the application name sent to the OS when + * required. For example, this will often appear in volume control applets for + * audio streams, and in lists of applications which are inhibiting the + * screensaver. You should use a string that describes your program ("My Game + * 2: The Revenge") + * + * Setting this to "" or leaving it unset will have SDL use a reasonable + * default: probably the application's name or "SDL Application" if SDL + * doesn't have any better information. + * + * Note that, for audio streams, this can be overridden with + * SDL_HINT_AUDIO_DEVICE_APP_NAME. + * + * On targets where this is not supported, this hint does nothing. + */ +#define SDL_HINT_APP_NAME "SDL_APP_NAME" + +/** + * \brief A variable controlling whether controllers used with the Apple TV + * generate UI events. + * + * When UI events are generated by controller input, the app will be + * backgrounded when the Apple TV remote's menu button is pressed, and when the + * pause or B buttons on gamepads are pressed. + * + * More information about properly making use of controllers for the Apple TV + * can be found here: + * https://developer.apple.com/tvos/human-interface-guidelines/remote-and-controllers/ + * + * This variable can be set to the following values: + * "0" - Controller input does not generate UI events (the default). + * "1" - Controller input generates UI events. + */ +#define SDL_HINT_APPLE_TV_CONTROLLER_UI_EVENTS "SDL_APPLE_TV_CONTROLLER_UI_EVENTS" + +/** + * \brief A variable controlling whether the Apple TV remote's joystick axes + * will automatically match the rotation of the remote. + * + * This variable can be set to the following values: + * "0" - Remote orientation does not affect joystick axes (the default). + * "1" - Joystick axes are based on the orientation of the remote. + */ +#define SDL_HINT_APPLE_TV_REMOTE_ALLOW_ROTATION "SDL_APPLE_TV_REMOTE_ALLOW_ROTATION" + +/** + * \brief A variable controlling the audio category on iOS and Mac OS X + * + * This variable can be set to the following values: + * + * "ambient" - Use the AVAudioSessionCategoryAmbient audio category, will be muted by the phone mute switch (default) + * "playback" - Use the AVAudioSessionCategoryPlayback category + * + * For more information, see Apple's documentation: + * https://developer.apple.com/library/content/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioSessionCategoriesandModes/AudioSessionCategoriesandModes.html + */ +#define SDL_HINT_AUDIO_CATEGORY "SDL_AUDIO_CATEGORY" + +/** + * \brief Specify an application name for an audio device. + * + * Some audio backends (such as PulseAudio) allow you to describe your audio + * stream. Among other things, this description might show up in a system + * control panel that lets the user adjust the volume on specific audio + * streams instead of using one giant master volume slider. + * + * This hints lets you transmit that information to the OS. The contents of + * this hint are used while opening an audio device. You should use a string + * that describes your program ("My Game 2: The Revenge") + * + * Setting this to "" or leaving it unset will have SDL use a reasonable + * default: this will be the name set with SDL_HINT_APP_NAME, if that hint is + * set. Otherwise, it'll probably the application's name or "SDL Application" + * if SDL doesn't have any better information. + * + * On targets where this is not supported, this hint does nothing. + */ +#define SDL_HINT_AUDIO_DEVICE_APP_NAME "SDL_AUDIO_DEVICE_APP_NAME" + +/** + * \brief Specify an application name for an audio device. + * + * Some audio backends (such as PulseAudio) allow you to describe your audio + * stream. Among other things, this description might show up in a system + * control panel that lets the user adjust the volume on specific audio + * streams instead of using one giant master volume slider. + * + * This hints lets you transmit that information to the OS. The contents of + * this hint are used while opening an audio device. You should use a string + * that describes your what your program is playing ("audio stream" is + * probably sufficient in many cases, but this could be useful for something + * like "team chat" if you have a headset playing VoIP audio separately). + * + * Setting this to "" or leaving it unset will have SDL use a reasonable + * default: "audio stream" or something similar. + * + * On targets where this is not supported, this hint does nothing. + */ +#define SDL_HINT_AUDIO_DEVICE_STREAM_NAME "SDL_AUDIO_DEVICE_STREAM_NAME" + +/** + * \brief Specify an application role for an audio device. + * + * Some audio backends (such as Pipewire) allow you to describe the role of + * your audio stream. Among other things, this description might show up in + * a system control panel or software for displaying and manipulating media + * playback/capture graphs. + * + * This hints lets you transmit that information to the OS. The contents of + * this hint are used while opening an audio device. You should use a string + * that describes your what your program is playing (Game, Music, Movie, + * etc...). + * + * Setting this to "" or leaving it unset will have SDL use a reasonable + * default: "Game" or something similar. + * + * On targets where this is not supported, this hint does nothing. + */ +#define SDL_HINT_AUDIO_DEVICE_STREAM_ROLE "SDL_AUDIO_DEVICE_STREAM_ROLE" + +/** + * \brief A variable controlling speed/quality tradeoff of audio resampling. + * + * If available, SDL can use libsamplerate ( http://www.mega-nerd.com/SRC/ ) + * to handle audio resampling. There are different resampling modes available + * that produce different levels of quality, using more CPU. + * + * If this hint isn't specified to a valid setting, or libsamplerate isn't + * available, SDL will use the default, internal resampling algorithm. + * + * As of SDL 2.26, SDL_ConvertAudio() respects this hint when libsamplerate is available. + * + * This hint is currently only checked at audio subsystem initialization. + * + * This variable can be set to the following values: + * + * "0" or "default" - Use SDL's internal resampling (Default when not set - low quality, fast) + * "1" or "fast" - Use fast, slightly higher quality resampling, if available + * "2" or "medium" - Use medium quality resampling, if available + * "3" or "best" - Use high quality resampling, if available + */ +#define SDL_HINT_AUDIO_RESAMPLING_MODE "SDL_AUDIO_RESAMPLING_MODE" + +/** + * \brief A variable controlling whether SDL updates joystick state when getting input events + * + * This variable can be set to the following values: + * + * "0" - You'll call SDL_JoystickUpdate() manually + * "1" - SDL will automatically call SDL_JoystickUpdate() (default) + * + * This hint can be toggled on and off at runtime. + */ +#define SDL_HINT_AUTO_UPDATE_JOYSTICKS "SDL_AUTO_UPDATE_JOYSTICKS" + +/** + * \brief A variable controlling whether SDL updates sensor state when getting input events + * + * This variable can be set to the following values: + * + * "0" - You'll call SDL_SensorUpdate() manually + * "1" - SDL will automatically call SDL_SensorUpdate() (default) + * + * This hint can be toggled on and off at runtime. + */ +#define SDL_HINT_AUTO_UPDATE_SENSORS "SDL_AUTO_UPDATE_SENSORS" + +/** + * \brief Prevent SDL from using version 4 of the bitmap header when saving BMPs. + * + * The bitmap header version 4 is required for proper alpha channel support and + * SDL will use it when required. Should this not be desired, this hint can + * force the use of the 40 byte header version which is supported everywhere. + * + * The variable can be set to the following values: + * "0" - Surfaces with a colorkey or an alpha channel are saved to a + * 32-bit BMP file with an alpha mask. SDL will use the bitmap + * header version 4 and set the alpha mask accordingly. + * "1" - Surfaces with a colorkey or an alpha channel are saved to a + * 32-bit BMP file without an alpha mask. The alpha channel data + * will be in the file, but applications are going to ignore it. + * + * The default value is "0". + */ +#define SDL_HINT_BMP_SAVE_LEGACY_FORMAT "SDL_BMP_SAVE_LEGACY_FORMAT" + +/** + * \brief Override for SDL_GetDisplayUsableBounds() + * + * If set, this hint will override the expected results for + * SDL_GetDisplayUsableBounds() for display index 0. Generally you don't want + * to do this, but this allows an embedded system to request that some of the + * screen be reserved for other uses when paired with a well-behaved + * application. + * + * The contents of this hint must be 4 comma-separated integers, the first + * is the bounds x, then y, width and height, in that order. + */ +#define SDL_HINT_DISPLAY_USABLE_BOUNDS "SDL_DISPLAY_USABLE_BOUNDS" + +/** + * \brief Disable giving back control to the browser automatically + * when running with asyncify + * + * With -s ASYNCIFY, SDL2 calls emscripten_sleep during operations + * such as refreshing the screen or polling events. + * + * This hint only applies to the emscripten platform + * + * The variable can be set to the following values: + * "0" - Disable emscripten_sleep calls (if you give back browser control manually or use asyncify for other purposes) + * "1" - Enable emscripten_sleep calls (the default) + */ +#define SDL_HINT_EMSCRIPTEN_ASYNCIFY "SDL_EMSCRIPTEN_ASYNCIFY" + +/** + * \brief override the binding element for keyboard inputs for Emscripten builds + * + * This hint only applies to the emscripten platform + * + * The variable can be one of + * "#window" - The javascript window object (this is the default) + * "#document" - The javascript document object + * "#screen" - the javascript window.screen object + * "#canvas" - the WebGL canvas element + * any other string without a leading # sign applies to the element on the page with that ID. + */ +#define SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT "SDL_EMSCRIPTEN_KEYBOARD_ELEMENT" + +/** + * \brief A variable that controls whether Steam Controllers should be exposed using the SDL joystick and game controller APIs + * + * The variable can be set to the following values: + * "0" - Do not scan for Steam Controllers + * "1" - Scan for Steam Controllers (the default) + * + * The default value is "1". This hint must be set before initializing the joystick subsystem. + */ +#define SDL_HINT_ENABLE_STEAM_CONTROLLERS "SDL_ENABLE_STEAM_CONTROLLERS" + +/** + * \brief A variable controlling verbosity of the logging of SDL events pushed onto the internal queue. + * + * This variable can be set to the following values, from least to most verbose: + * + * "0" - Don't log any events (default) + * "1" - Log most events (other than the really spammy ones). + * "2" - Include mouse and finger motion events. + * "3" - Include SDL_SysWMEvent events. + * + * This is generally meant to be used to debug SDL itself, but can be useful + * for application developers that need better visibility into what is going + * on in the event queue. Logged events are sent through SDL_Log(), which + * means by default they appear on stdout on most platforms or maybe + * OutputDebugString() on Windows, and can be funneled by the app with + * SDL_LogSetOutputFunction(), etc. + * + * This hint can be toggled on and off at runtime, if you only need to log + * events for a small subset of program execution. + */ +#define SDL_HINT_EVENT_LOGGING "SDL_EVENT_LOGGING" + +/** + * \brief A variable controlling whether raising the window should be done more forcefully + * + * This variable can be set to the following values: + * "0" - No forcing (the default) + * "1" - Extra level of forcing + * + * At present, this is only an issue under MS Windows, which makes it nearly impossible to + * programmatically move a window to the foreground, for "security" reasons. See + * http://stackoverflow.com/a/34414846 for a discussion. + */ +#define SDL_HINT_FORCE_RAISEWINDOW "SDL_HINT_FORCE_RAISEWINDOW" + +/** + * \brief A variable controlling how 3D acceleration is used to accelerate the SDL screen surface. + * + * SDL can try to accelerate the SDL screen surface by using streaming + * textures with a 3D rendering engine. This variable controls whether and + * how this is done. + * + * This variable can be set to the following values: + * "0" - Disable 3D acceleration + * "1" - Enable 3D acceleration, using the default renderer. + * "X" - Enable 3D acceleration, using X where X is one of the valid rendering drivers. (e.g. "direct3d", "opengl", etc.) + * + * By default SDL tries to make a best guess for each platform whether + * to use acceleration or not. + */ +#define SDL_HINT_FRAMEBUFFER_ACCELERATION "SDL_FRAMEBUFFER_ACCELERATION" + +/** + * \brief A variable that lets you manually hint extra gamecontroller db entries. + * + * The variable should be newline delimited rows of gamecontroller config data, see SDL_gamecontroller.h + * + * This hint must be set before calling SDL_Init(SDL_INIT_GAMECONTROLLER) + * You can update mappings after the system is initialized with SDL_GameControllerMappingForGUID() and SDL_GameControllerAddMapping() + */ +#define SDL_HINT_GAMECONTROLLERCONFIG "SDL_GAMECONTROLLERCONFIG" + +/** + * \brief A variable that lets you provide a file with extra gamecontroller db entries. + * + * The file should contain lines of gamecontroller config data, see SDL_gamecontroller.h + * + * This hint must be set before calling SDL_Init(SDL_INIT_GAMECONTROLLER) + * You can update mappings after the system is initialized with SDL_GameControllerMappingForGUID() and SDL_GameControllerAddMapping() + */ +#define SDL_HINT_GAMECONTROLLERCONFIG_FILE "SDL_GAMECONTROLLERCONFIG_FILE" + +/** + * \brief A variable that overrides the automatic controller type detection + * + * The variable should be comma separated entries, in the form: VID/PID=type + * + * The VID and PID should be hexadecimal with exactly 4 digits, e.g. 0x00fd + * + * The type should be one of: + * Xbox360 + * XboxOne + * PS3 + * PS4 + * PS5 + * SwitchPro + * + * This hint affects what driver is used, and must be set before calling SDL_Init(SDL_INIT_GAMECONTROLLER) + */ +#define SDL_HINT_GAMECONTROLLERTYPE "SDL_GAMECONTROLLERTYPE" + +/** + * \brief A variable containing a list of devices to skip when scanning for game controllers. + * + * The format of the string is a comma separated list of USB VID/PID pairs + * in hexadecimal form, e.g. + * + * 0xAAAA/0xBBBB,0xCCCC/0xDDDD + * + * The variable can also take the form of @file, in which case the named + * file will be loaded and interpreted as the value of the variable. + */ +#define SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES "SDL_GAMECONTROLLER_IGNORE_DEVICES" + +/** + * \brief If set, all devices will be skipped when scanning for game controllers except for the ones listed in this variable. + * + * The format of the string is a comma separated list of USB VID/PID pairs + * in hexadecimal form, e.g. + * + * 0xAAAA/0xBBBB,0xCCCC/0xDDDD + * + * The variable can also take the form of @file, in which case the named + * file will be loaded and interpreted as the value of the variable. + */ +#define SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES_EXCEPT "SDL_GAMECONTROLLER_IGNORE_DEVICES_EXCEPT" + +/** + * \brief If set, game controller face buttons report their values according to their labels instead of their positional layout. + * + * For example, on Nintendo Switch controllers, normally you'd get: + * + * (Y) + * (X) (B) + * (A) + * + * but if this hint is set, you'll get: + * + * (X) + * (Y) (A) + * (B) + * + * The variable can be set to the following values: + * "0" - Report the face buttons by position, as though they were on an Xbox controller. + * "1" - Report the face buttons by label instead of position + * + * The default value is "1". This hint may be set at any time. + */ +#define SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS "SDL_GAMECONTROLLER_USE_BUTTON_LABELS" + +/** + * \brief A variable controlling whether grabbing input grabs the keyboard + * + * This variable can be set to the following values: + * "0" - Grab will affect only the mouse + * "1" - Grab will affect mouse and keyboard + * + * By default SDL will not grab the keyboard so system shortcuts still work. + */ +#define SDL_HINT_GRAB_KEYBOARD "SDL_GRAB_KEYBOARD" + +/** + * \brief A variable containing a list of devices to ignore in SDL_hid_enumerate() + * + * For example, to ignore the Shanwan DS3 controller and any Valve controller, you might + * have the string "0x2563/0x0523,0x28de/0x0000" + */ +#define SDL_HINT_HIDAPI_IGNORE_DEVICES "SDL_HIDAPI_IGNORE_DEVICES" + +/** + * \brief A variable controlling whether the idle timer is disabled on iOS. + * + * When an iOS app does not receive touches for some time, the screen is + * dimmed automatically. For games where the accelerometer is the only input + * this is problematic. This functionality can be disabled by setting this + * hint. + * + * As of SDL 2.0.4, SDL_EnableScreenSaver() and SDL_DisableScreenSaver() + * accomplish the same thing on iOS. They should be preferred over this hint. + * + * This variable can be set to the following values: + * "0" - Enable idle timer + * "1" - Disable idle timer + */ +#define SDL_HINT_IDLE_TIMER_DISABLED "SDL_IOS_IDLE_TIMER_DISABLED" + +/** + * \brief A variable to control whether certain IMEs should handle text editing internally instead of sending SDL_TEXTEDITING events. + * + * The variable can be set to the following values: + * "0" - SDL_TEXTEDITING events are sent, and it is the application's + * responsibility to render the text from these events and + * differentiate it somehow from committed text. (default) + * "1" - If supported by the IME then SDL_TEXTEDITING events are not sent, + * and text that is being composed will be rendered in its own UI. + */ +#define SDL_HINT_IME_INTERNAL_EDITING "SDL_IME_INTERNAL_EDITING" + +/** + * \brief A variable to control whether certain IMEs should show native UI components (such as the Candidate List) instead of suppressing them. + * + * The variable can be set to the following values: + * "0" - Native UI components are not display. (default) + * "1" - Native UI components are displayed. + */ +#define SDL_HINT_IME_SHOW_UI "SDL_IME_SHOW_UI" + +/** + * \brief A variable to control if extended IME text support is enabled. + * If enabled then SDL_TextEditingExtEvent will be issued if the text would be truncated otherwise. + * Additionally SDL_TextInputEvent will be dispatched multiple times so that it is not truncated. + * + * The variable can be set to the following values: + * "0" - Legacy behavior. Text can be truncated, no heap allocations. (default) + * "1" - Modern behavior. + */ +#define SDL_HINT_IME_SUPPORT_EXTENDED_TEXT "SDL_IME_SUPPORT_EXTENDED_TEXT" + +/** + * \brief A variable controlling whether the home indicator bar on iPhone X + * should be hidden. + * + * This variable can be set to the following values: + * "0" - The indicator bar is not hidden (default for windowed applications) + * "1" - The indicator bar is hidden and is shown when the screen is touched (useful for movie playback applications) + * "2" - The indicator bar is dim and the first swipe makes it visible and the second swipe performs the "home" action (default for fullscreen applications) + */ +#define SDL_HINT_IOS_HIDE_HOME_INDICATOR "SDL_IOS_HIDE_HOME_INDICATOR" + +/** + * \brief A variable that lets you enable joystick (and gamecontroller) events even when your app is in the background. + * + * The variable can be set to the following values: + * "0" - Disable joystick & gamecontroller input events when the + * application is in the background. + * "1" - Enable joystick & gamecontroller input events when the + * application is in the background. + * + * The default value is "0". This hint may be set at any time. + */ +#define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS" + +/** + * \brief A variable controlling whether the HIDAPI joystick drivers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI drivers are not used + * "1" - HIDAPI drivers are used (the default) + * + * This variable is the default for all drivers, but can be overridden by the hints for specific drivers below. + */ +#define SDL_HINT_JOYSTICK_HIDAPI "SDL_JOYSTICK_HIDAPI" + +/** + * \brief A variable controlling whether the HIDAPI driver for Nintendo GameCube controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_GAMECUBE "SDL_JOYSTICK_HIDAPI_GAMECUBE" + +/** + * \brief A variable controlling whether "low_frequency_rumble" and "high_frequency_rumble" is used to implement + * the GameCube controller's 3 rumble modes, Stop(0), Rumble(1), and StopHard(2) + * this is useful for applications that need full compatibility for things like ADSR envelopes. + * Stop is implemented by setting "low_frequency_rumble" to "0" and "high_frequency_rumble" ">0" + * Rumble is both at any arbitrary value, + * StopHard is implemented by setting both "low_frequency_rumble" and "high_frequency_rumble" to "0" + * + * This variable can be set to the following values: + * "0" - Normal rumble behavior is behavior is used (default) + * "1" - Proper GameCube controller rumble behavior is used + * + */ +#define SDL_HINT_JOYSTICK_GAMECUBE_RUMBLE_BRAKE "SDL_JOYSTICK_GAMECUBE_RUMBLE_BRAKE" + +/** + * \brief A variable controlling whether the HIDAPI driver for Nintendo Switch Joy-Cons should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_JOY_CONS "SDL_JOYSTICK_HIDAPI_JOY_CONS" + +/** + * \brief A variable controlling whether Nintendo Switch Joy-Con controllers will be combined into a single Pro-like controller when using the HIDAPI driver + * + * This variable can be set to the following values: + * "0" - Left and right Joy-Con controllers will not be combined and each will be a mini-gamepad + * "1" - Left and right Joy-Con controllers will be combined into a single controller (the default) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_COMBINE_JOY_CONS "SDL_JOYSTICK_HIDAPI_COMBINE_JOY_CONS" + +/** + * \brief A variable controlling whether Nintendo Switch Joy-Con controllers will be in vertical mode when using the HIDAPI driver + * + * This variable can be set to the following values: + * "0" - Left and right Joy-Con controllers will not be in vertical mode (the default) + * "1" - Left and right Joy-Con controllers will be in vertical mode + * + * This hint must be set before calling SDL_Init(SDL_INIT_GAMECONTROLLER) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_VERTICAL_JOY_CONS "SDL_JOYSTICK_HIDAPI_VERTICAL_JOY_CONS" + +/** + * \brief A variable controlling whether the HIDAPI driver for Amazon Luna controllers connected via Bluetooth should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_LUNA "SDL_JOYSTICK_HIDAPI_LUNA" + +/** + * \brief A variable controlling whether the HIDAPI driver for Nintendo Online classic controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_NINTENDO_CLASSIC "SDL_JOYSTICK_HIDAPI_NINTENDO_CLASSIC" + +/** + * \brief A variable controlling whether the HIDAPI driver for NVIDIA SHIELD controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_SHIELD "SDL_JOYSTICK_HIDAPI_SHIELD" + +/** + * \brief A variable controlling whether the HIDAPI driver for PS3 controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI on macOS, and "0" on other platforms. + * + * It is not possible to use this driver on Windows, due to limitations in the default drivers + * installed. See https://github.com/ViGEm/DsHidMini for an alternative driver on Windows. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS3 "SDL_JOYSTICK_HIDAPI_PS3" + +/** + * \brief A variable controlling whether the HIDAPI driver for PS4 controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS4 "SDL_JOYSTICK_HIDAPI_PS4" + +/** + * \brief A variable controlling whether extended input reports should be used for PS4 controllers when using the HIDAPI driver. + * + * This variable can be set to the following values: + * "0" - extended reports are not enabled (the default) + * "1" - extended reports + * + * Extended input reports allow rumble on Bluetooth PS4 controllers, but + * break DirectInput handling for applications that don't use SDL. + * + * Once extended reports are enabled, they can not be disabled without + * power cycling the controller. + * + * For compatibility with applications written for versions of SDL prior + * to the introduction of PS5 controller support, this value will also + * control the state of extended reports on PS5 controllers when the + * SDL_HINT_JOYSTICK_HIDAPI_PS5_RUMBLE hint is not explicitly set. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE "SDL_JOYSTICK_HIDAPI_PS4_RUMBLE" + +/** + * \brief A variable controlling whether the HIDAPI driver for PS5 controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS5 "SDL_JOYSTICK_HIDAPI_PS5" + +/** + * \brief A variable controlling whether the player LEDs should be lit to indicate which player is associated with a PS5 controller. + * + * This variable can be set to the following values: + * "0" - player LEDs are not enabled + * "1" - player LEDs are enabled (the default) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS5_PLAYER_LED "SDL_JOYSTICK_HIDAPI_PS5_PLAYER_LED" + +/** + * \brief A variable controlling whether extended input reports should be used for PS5 controllers when using the HIDAPI driver. + * + * This variable can be set to the following values: + * "0" - extended reports are not enabled (the default) + * "1" - extended reports + * + * Extended input reports allow rumble on Bluetooth PS5 controllers, but + * break DirectInput handling for applications that don't use SDL. + * + * Once extended reports are enabled, they can not be disabled without + * power cycling the controller. + * + * For compatibility with applications written for versions of SDL prior + * to the introduction of PS5 controller support, this value defaults to + * the value of SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_PS5_RUMBLE "SDL_JOYSTICK_HIDAPI_PS5_RUMBLE" + +/** + * \brief A variable controlling whether the HIDAPI driver for Google Stadia controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_STADIA "SDL_JOYSTICK_HIDAPI_STADIA" + +/** + * \brief A variable controlling whether the HIDAPI driver for Bluetooth Steam Controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used for Steam Controllers, which requires Bluetooth access + * and may prompt the user for permission on iOS and Android. + * + * The default is "0" + */ +#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM" + +/** + * \brief A variable controlling whether the HIDAPI driver for Nintendo Switch controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH "SDL_JOYSTICK_HIDAPI_SWITCH" + +/** + * \brief A variable controlling whether the Home button LED should be turned on when a Nintendo Switch Pro controller is opened + * + * This variable can be set to the following values: + * "0" - home button LED is turned off + * "1" - home button LED is turned on + * + * By default the Home button LED state is not changed. This hint can also be set to a floating point value between 0.0 and 1.0 which controls the brightness of the Home button LED. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH_HOME_LED "SDL_JOYSTICK_HIDAPI_SWITCH_HOME_LED" + +/** + * \brief A variable controlling whether the Home button LED should be turned on when a Nintendo Switch Joy-Con controller is opened + * + * This variable can be set to the following values: + * "0" - home button LED is turned off + * "1" - home button LED is turned on + * + * By default the Home button LED state is not changed. This hint can also be set to a floating point value between 0.0 and 1.0 which controls the brightness of the Home button LED. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_JOYCON_HOME_LED "SDL_JOYSTICK_HIDAPI_JOYCON_HOME_LED" + +/** + * \brief A variable controlling whether the player LEDs should be lit to indicate which player is associated with a Nintendo Switch controller. + * + * This variable can be set to the following values: + * "0" - player LEDs are not enabled + * "1" - player LEDs are enabled (the default) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED "SDL_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED" + +/** + * \brief A variable controlling whether the HIDAPI driver for Nintendo Wii and Wii U controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * This driver doesn't work with the dolphinbar, so the default is SDL_FALSE for now. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_WII "SDL_JOYSTICK_HIDAPI_WII" + +/** + * \brief A variable controlling whether the player LEDs should be lit to indicate which player is associated with a Wii controller. + * + * This variable can be set to the following values: + * "0" - player LEDs are not enabled + * "1" - player LEDs are enabled (the default) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_WII_PLAYER_LED "SDL_JOYSTICK_HIDAPI_WII_PLAYER_LED" + +/** + * \brief A variable controlling whether the HIDAPI driver for XBox controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is "0" on Windows, otherwise the value of SDL_HINT_JOYSTICK_HIDAPI + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX "SDL_JOYSTICK_HIDAPI_XBOX" + +/** + * \brief A variable controlling whether the HIDAPI driver for XBox 360 controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI_XBOX + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX_360 "SDL_JOYSTICK_HIDAPI_XBOX_360" + +/** + * \brief A variable controlling whether the player LEDs should be lit to indicate which player is associated with an Xbox 360 controller. + * + * This variable can be set to the following values: + * "0" - player LEDs are not enabled + * "1" - player LEDs are enabled (the default) + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX_360_PLAYER_LED "SDL_JOYSTICK_HIDAPI_XBOX_360_PLAYER_LED" + +/** + * \brief A variable controlling whether the HIDAPI driver for XBox 360 wireless controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI_XBOX_360 + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX_360_WIRELESS "SDL_JOYSTICK_HIDAPI_XBOX_360_WIRELESS" + +/** + * \brief A variable controlling whether the HIDAPI driver for XBox One controllers should be used. + * + * This variable can be set to the following values: + * "0" - HIDAPI driver is not used + * "1" - HIDAPI driver is used + * + * The default is the value of SDL_HINT_JOYSTICK_HIDAPI_XBOX + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX_ONE "SDL_JOYSTICK_HIDAPI_XBOX_ONE" + +/** + * \brief A variable controlling whether the Home button LED should be turned on when an Xbox One controller is opened + * + * This variable can be set to the following values: + * "0" - home button LED is turned off + * "1" - home button LED is turned on + * + * By default the Home button LED state is not changed. This hint can also be set to a floating point value between 0.0 and 1.0 which controls the brightness of the Home button LED. The default brightness is 0.4. + */ +#define SDL_HINT_JOYSTICK_HIDAPI_XBOX_ONE_HOME_LED "SDL_JOYSTICK_HIDAPI_XBOX_ONE_HOME_LED" + +/** + * \brief A variable controlling whether the RAWINPUT joystick drivers should be used for better handling XInput-capable devices. + * + * This variable can be set to the following values: + * "0" - RAWINPUT drivers are not used + * "1" - RAWINPUT drivers are used (the default) + */ +#define SDL_HINT_JOYSTICK_RAWINPUT "SDL_JOYSTICK_RAWINPUT" + +/** + * \brief A variable controlling whether the RAWINPUT driver should pull correlated data from XInput. + * + * This variable can be set to the following values: + * "0" - RAWINPUT driver will only use data from raw input APIs + * "1" - RAWINPUT driver will also pull data from XInput, providing + * better trigger axes, guide button presses, and rumble support + * for Xbox controllers + * + * The default is "1". This hint applies to any joysticks opened after setting the hint. + */ +#define SDL_HINT_JOYSTICK_RAWINPUT_CORRELATE_XINPUT "SDL_JOYSTICK_RAWINPUT_CORRELATE_XINPUT" + +/** + * \brief A variable controlling whether the ROG Chakram mice should show up as joysticks + * + * This variable can be set to the following values: + * "0" - ROG Chakram mice do not show up as joysticks (the default) + * "1" - ROG Chakram mice show up as joysticks + */ +#define SDL_HINT_JOYSTICK_ROG_CHAKRAM "SDL_JOYSTICK_ROG_CHAKRAM" + +/** + * \brief A variable controlling whether a separate thread should be used + * for handling joystick detection and raw input messages on Windows + * + * This variable can be set to the following values: + * "0" - A separate thread is not used (the default) + * "1" - A separate thread is used for handling raw input messages + * + */ +#define SDL_HINT_JOYSTICK_THREAD "SDL_JOYSTICK_THREAD" + +/** + * \brief Determines whether SDL enforces that DRM master is required in order + * to initialize the KMSDRM video backend. + * + * The DRM subsystem has a concept of a "DRM master" which is a DRM client that + * has the ability to set planes, set cursor, etc. When SDL is DRM master, it + * can draw to the screen using the SDL rendering APIs. Without DRM master, SDL + * is still able to process input and query attributes of attached displays, + * but it cannot change display state or draw to the screen directly. + * + * In some cases, it can be useful to have the KMSDRM backend even if it cannot + * be used for rendering. An app may want to use SDL for input processing while + * using another rendering API (such as an MMAL overlay on Raspberry Pi) or + * using its own code to render to DRM overlays that SDL doesn't support. + * + * This hint must be set before initializing the video subsystem. + * + * This variable can be set to the following values: + * "0" - SDL will allow usage of the KMSDRM backend without DRM master + * "1" - SDL Will require DRM master to use the KMSDRM backend (default) + */ +#define SDL_HINT_KMSDRM_REQUIRE_DRM_MASTER "SDL_KMSDRM_REQUIRE_DRM_MASTER" + +/** + * \brief A comma separated list of devices to open as joysticks + * + * This variable is currently only used by the Linux joystick driver. + */ +#define SDL_HINT_JOYSTICK_DEVICE "SDL_JOYSTICK_DEVICE" + +/** + * \brief A variable controlling whether joysticks on Linux will always treat 'hat' axis inputs (ABS_HAT0X - ABS_HAT3Y) as 8-way digital hats without checking whether they may be analog. + * + * This variable can be set to the following values: + * "0" - Only map hat axis inputs to digital hat outputs if the input axes appear to actually be digital (the default) + * "1" - Always handle the input axes numbered ABS_HAT0X to ABS_HAT3Y as digital hats + */ +#define SDL_HINT_LINUX_DIGITAL_HATS "SDL_LINUX_DIGITAL_HATS" + +/** + * \brief A variable controlling whether digital hats on Linux will apply deadzones to their underlying input axes or use unfiltered values. + * + * This variable can be set to the following values: + * "0" - Return digital hat values based on unfiltered input axis values + * "1" - Return digital hat values with deadzones on the input axes taken into account (the default) + */ +#define SDL_HINT_LINUX_HAT_DEADZONES "SDL_LINUX_HAT_DEADZONES" + +/** + * \brief A variable controlling whether to use the classic /dev/input/js* joystick interface or the newer /dev/input/event* joystick interface on Linux + * + * This variable can be set to the following values: + * "0" - Use /dev/input/event* + * "1" - Use /dev/input/js* + * + * By default the /dev/input/event* interfaces are used + */ +#define SDL_HINT_LINUX_JOYSTICK_CLASSIC "SDL_LINUX_JOYSTICK_CLASSIC" + +/** + * \brief A variable controlling whether joysticks on Linux adhere to their HID-defined deadzones or return unfiltered values. + * + * This variable can be set to the following values: + * "0" - Return unfiltered joystick axis values (the default) + * "1" - Return axis values with deadzones taken into account + */ +#define SDL_HINT_LINUX_JOYSTICK_DEADZONES "SDL_LINUX_JOYSTICK_DEADZONES" + +/** +* \brief When set don't force the SDL app to become a foreground process +* +* This hint only applies to Mac OS X. +* +*/ +#define SDL_HINT_MAC_BACKGROUND_APP "SDL_MAC_BACKGROUND_APP" + +/** + * \brief A variable that determines whether ctrl+click should generate a right-click event on Mac + * + * If present, holding ctrl while left clicking will generate a right click + * event when on Mac. + */ +#define SDL_HINT_MAC_CTRL_CLICK_EMULATE_RIGHT_CLICK "SDL_MAC_CTRL_CLICK_EMULATE_RIGHT_CLICK" + +/** + * \brief A variable controlling whether dispatching OpenGL context updates should block the dispatching thread until the main thread finishes processing + * + * This variable can be set to the following values: + * "0" - Dispatching OpenGL context updates will block the dispatching thread until the main thread finishes processing (default). + * "1" - Dispatching OpenGL context updates will allow the dispatching thread to continue execution. + * + * Generally you want the default, but if you have OpenGL code in a background thread on a Mac, and the main thread + * hangs because it's waiting for that background thread, but that background thread is also hanging because it's + * waiting for the main thread to do an update, this might fix your issue. + * + * This hint only applies to macOS. + * + * This hint is available since SDL 2.24.0. + * + */ +#define SDL_HINT_MAC_OPENGL_ASYNC_DISPATCH "SDL_MAC_OPENGL_ASYNC_DISPATCH" + +/** + * \brief A variable setting the double click radius, in pixels. + */ +#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS "SDL_MOUSE_DOUBLE_CLICK_RADIUS" + +/** + * \brief A variable setting the double click time, in milliseconds. + */ +#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME "SDL_MOUSE_DOUBLE_CLICK_TIME" + +/** + * \brief Allow mouse click events when clicking to focus an SDL window + * + * This variable can be set to the following values: + * "0" - Ignore mouse clicks that activate a window + * "1" - Generate events for mouse clicks that activate a window + * + * By default SDL will ignore mouse clicks that activate a window + */ +#define SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH "SDL_MOUSE_FOCUS_CLICKTHROUGH" + +/** + * \brief A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in relative mode + */ +#define SDL_HINT_MOUSE_NORMAL_SPEED_SCALE "SDL_MOUSE_NORMAL_SPEED_SCALE" + +/** + * \brief A variable controlling whether relative mouse mode constrains the mouse to the center of the window + * + * This variable can be set to the following values: + * "0" - Relative mouse mode constrains the mouse to the window + * "1" - Relative mouse mode constrains the mouse to the center of the window + * + * Constraining to the center of the window works better for FPS games and when the + * application is running over RDP. Constraining to the whole window works better + * for 2D games and increases the chance that the mouse will be in the correct + * position when using high DPI mice. + * + * By default SDL will constrain the mouse to the center of the window + */ +#define SDL_HINT_MOUSE_RELATIVE_MODE_CENTER "SDL_MOUSE_RELATIVE_MODE_CENTER" + +/** + * \brief A variable controlling whether relative mouse mode is implemented using mouse warping + * + * This variable can be set to the following values: + * "0" - Relative mouse mode uses raw input + * "1" - Relative mouse mode uses mouse warping + * + * By default SDL will use raw input for relative mouse mode + */ +#define SDL_HINT_MOUSE_RELATIVE_MODE_WARP "SDL_MOUSE_RELATIVE_MODE_WARP" + +/** + * \brief A variable controlling whether relative mouse motion is affected by renderer scaling + * + * This variable can be set to the following values: + * "0" - Relative motion is unaffected by DPI or renderer's logical size + * "1" - Relative motion is scaled according to DPI scaling and logical size + * + * By default relative mouse deltas are affected by DPI and renderer scaling + */ +#define SDL_HINT_MOUSE_RELATIVE_SCALING "SDL_MOUSE_RELATIVE_SCALING" + +/** + * \brief A variable setting the scale for mouse motion, in floating point, when the mouse is in relative mode + */ +#define SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE "SDL_MOUSE_RELATIVE_SPEED_SCALE" + +/** + * \brief A variable controlling whether the system mouse acceleration curve is used for relative mouse motion. + * + * This variable can be set to the following values: + * "0" - Relative mouse motion will be unscaled (the default) + * "1" - Relative mouse motion will be scaled using the system mouse acceleration curve. + * + * If SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE is set, that will override the system speed scale. + */ +#define SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE "SDL_MOUSE_RELATIVE_SYSTEM_SCALE" + +/** + * \brief A variable controlling whether a motion event should be generated for mouse warping in relative mode. + * + * This variable can be set to the following values: + * "0" - Warping the mouse will not generate a motion event in relative mode + * "1" - Warping the mouse will generate a motion event in relative mode + * + * By default warping the mouse will not generate motion events in relative mode. This avoids the application having to filter out large relative motion due to warping. + */ +#define SDL_HINT_MOUSE_RELATIVE_WARP_MOTION "SDL_MOUSE_RELATIVE_WARP_MOTION" + +/** + * \brief A variable controlling whether mouse events should generate synthetic touch events + * + * This variable can be set to the following values: + * "0" - Mouse events will not generate touch events (default for desktop platforms) + * "1" - Mouse events will generate touch events (default for mobile platforms, such as Android and iOS) + */ +#define SDL_HINT_MOUSE_TOUCH_EVENTS "SDL_MOUSE_TOUCH_EVENTS" + +/** + * \brief A variable controlling whether the mouse is captured while mouse buttons are pressed + * + * This variable can be set to the following values: + * "0" - The mouse is not captured while mouse buttons are pressed + * "1" - The mouse is captured while mouse buttons are pressed + * + * By default the mouse is captured while mouse buttons are pressed so if the mouse is dragged + * outside the window, the application continues to receive mouse events until the button is + * released. + */ +#define SDL_HINT_MOUSE_AUTO_CAPTURE "SDL_MOUSE_AUTO_CAPTURE" + +/** + * \brief Tell SDL not to catch the SIGINT or SIGTERM signals. + * + * This hint only applies to Unix-like platforms, and should set before + * any calls to SDL_Init() + * + * The variable can be set to the following values: + * "0" - SDL will install a SIGINT and SIGTERM handler, and when it + * catches a signal, convert it into an SDL_QUIT event. + * "1" - SDL will not install a signal handler at all. + */ +#define SDL_HINT_NO_SIGNAL_HANDLERS "SDL_NO_SIGNAL_HANDLERS" + +/** + * \brief A variable controlling what driver to use for OpenGL ES contexts. + * + * On some platforms, currently Windows and X11, OpenGL drivers may support + * creating contexts with an OpenGL ES profile. By default SDL uses these + * profiles, when available, otherwise it attempts to load an OpenGL ES + * library, e.g. that provided by the ANGLE project. This variable controls + * whether SDL follows this default behaviour or will always load an + * OpenGL ES library. + * + * Circumstances where this is useful include + * - Testing an app with a particular OpenGL ES implementation, e.g ANGLE, + * or emulator, e.g. those from ARM, Imagination or Qualcomm. + * - Resolving OpenGL ES function addresses at link time by linking with + * the OpenGL ES library instead of querying them at run time with + * SDL_GL_GetProcAddress(). + * + * Caution: for an application to work with the default behaviour across + * different OpenGL drivers it must query the OpenGL ES function + * addresses at run time using SDL_GL_GetProcAddress(). + * + * This variable is ignored on most platforms because OpenGL ES is native + * or not supported. + * + * This variable can be set to the following values: + * "0" - Use ES profile of OpenGL, if available. (Default when not set.) + * "1" - Load OpenGL ES library using the default library names. + * + */ +#define SDL_HINT_OPENGL_ES_DRIVER "SDL_OPENGL_ES_DRIVER" + +/** + * \brief A variable controlling which orientations are allowed on iOS/Android. + * + * In some circumstances it is necessary to be able to explicitly control + * which UI orientations are allowed. + * + * This variable is a space delimited list of the following values: + * "LandscapeLeft", "LandscapeRight", "Portrait" "PortraitUpsideDown" + */ +#define SDL_HINT_ORIENTATIONS "SDL_IOS_ORIENTATIONS" + +/** + * \brief A variable controlling the use of a sentinel event when polling the event queue + * + * This variable can be set to the following values: + * "0" - Disable poll sentinels + * "1" - Enable poll sentinels + * + * When polling for events, SDL_PumpEvents is used to gather new events from devices. + * If a device keeps producing new events between calls to SDL_PumpEvents, a poll loop will + * become stuck until the new events stop. + * This is most noticeable when moving a high frequency mouse. + * + * By default, poll sentinels are enabled. + */ +#define SDL_HINT_POLL_SENTINEL "SDL_POLL_SENTINEL" + +/** + * \brief Override for SDL_GetPreferredLocales() + * + * If set, this will be favored over anything the OS might report for the + * user's preferred locales. Changing this hint at runtime will not generate + * a SDL_LOCALECHANGED event (but if you can change the hint, you can push + * your own event, if you want). + * + * The format of this hint is a comma-separated list of language and locale, + * combined with an underscore, as is a common format: "en_GB". Locale is + * optional: "en". So you might have a list like this: "en_GB,jp,es_PT" + */ +#define SDL_HINT_PREFERRED_LOCALES "SDL_PREFERRED_LOCALES" + +/** + * \brief A variable describing the content orientation on QtWayland-based platforms. + * + * On QtWayland platforms, windows are rotated client-side to allow for custom + * transitions. In order to correctly position overlays (e.g. volume bar) and + * gestures (e.g. events view, close/minimize gestures), the system needs to + * know in which orientation the application is currently drawing its contents. + * + * This does not cause the window to be rotated or resized, the application + * needs to take care of drawing the content in the right orientation (the + * framebuffer is always in portrait mode). + * + * This variable can be one of the following values: + * "primary" (default), "portrait", "landscape", "inverted-portrait", "inverted-landscape" + */ +#define SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION "SDL_QTWAYLAND_CONTENT_ORIENTATION" + +/** + * \brief Flags to set on QtWayland windows to integrate with the native window manager. + * + * On QtWayland platforms, this hint controls the flags to set on the windows. + * For example, on Sailfish OS "OverridesSystemGestures" disables swipe gestures. + * + * This variable is a space-separated list of the following values (empty = no flags): + * "OverridesSystemGestures", "StaysOnTop", "BypassWindowManager" + */ +#define SDL_HINT_QTWAYLAND_WINDOW_FLAGS "SDL_QTWAYLAND_WINDOW_FLAGS" + +/** + * \brief A variable controlling whether the 2D render API is compatible or efficient. + * + * This variable can be set to the following values: + * + * "0" - Don't use batching to make rendering more efficient. + * "1" - Use batching, but might cause problems if app makes its own direct OpenGL calls. + * + * Up to SDL 2.0.9, the render API would draw immediately when requested. Now + * it batches up draw requests and sends them all to the GPU only when forced + * to (during SDL_RenderPresent, when changing render targets, by updating a + * texture that the batch needs, etc). This is significantly more efficient, + * but it can cause problems for apps that expect to render on top of the + * render API's output. As such, SDL will disable batching if a specific + * render backend is requested (since this might indicate that the app is + * planning to use the underlying graphics API directly). This hint can + * be used to explicitly request batching in this instance. It is a contract + * that you will either never use the underlying graphics API directly, or + * if you do, you will call SDL_RenderFlush() before you do so any current + * batch goes to the GPU before your work begins. Not following this contract + * will result in undefined behavior. + */ +#define SDL_HINT_RENDER_BATCHING "SDL_RENDER_BATCHING" + +/** + * \brief A variable controlling how the 2D render API renders lines + * + * This variable can be set to the following values: + * "0" - Use the default line drawing method (Bresenham's line algorithm as of SDL 2.0.20) + * "1" - Use the driver point API using Bresenham's line algorithm (correct, draws many points) + * "2" - Use the driver line API (occasionally misses line endpoints based on hardware driver quirks, was the default before 2.0.20) + * "3" - Use the driver geometry API (correct, draws thicker diagonal lines) + * + * This variable should be set when the renderer is created. + */ +#define SDL_HINT_RENDER_LINE_METHOD "SDL_RENDER_LINE_METHOD" + +/** + * \brief A variable controlling whether to enable Direct3D 11+'s Debug Layer. + * + * This variable does not have any effect on the Direct3D 9 based renderer. + * + * This variable can be set to the following values: + * "0" - Disable Debug Layer use + * "1" - Enable Debug Layer use + * + * By default, SDL does not use Direct3D Debug Layer. + */ +#define SDL_HINT_RENDER_DIRECT3D11_DEBUG "SDL_RENDER_DIRECT3D11_DEBUG" + +/** + * \brief A variable controlling whether the Direct3D device is initialized for thread-safe operations. + * + * This variable can be set to the following values: + * "0" - Thread-safety is not enabled (faster) + * "1" - Thread-safety is enabled + * + * By default the Direct3D device is created with thread-safety disabled. + */ +#define SDL_HINT_RENDER_DIRECT3D_THREADSAFE "SDL_RENDER_DIRECT3D_THREADSAFE" + +/** + * \brief A variable specifying which render driver to use. + * + * If the application doesn't pick a specific renderer to use, this variable + * specifies the name of the preferred renderer. If the preferred renderer + * can't be initialized, the normal default renderer is used. + * + * This variable is case insensitive and can be set to the following values: + * "direct3d" + * "direct3d11" + * "direct3d12" + * "opengl" + * "opengles2" + * "opengles" + * "metal" + * "software" + * + * The default varies by platform, but it's the first one in the list that + * is available on the current platform. + */ +#define SDL_HINT_RENDER_DRIVER "SDL_RENDER_DRIVER" + +/** + * \brief A variable controlling the scaling policy for SDL_RenderSetLogicalSize. + * + * This variable can be set to the following values: + * "0" or "letterbox" - Uses letterbox/sidebars to fit the entire rendering on screen + * "1" or "overscan" - Will zoom the rendering so it fills the entire screen, allowing edges to be drawn offscreen + * + * By default letterbox is used + */ +#define SDL_HINT_RENDER_LOGICAL_SIZE_MODE "SDL_RENDER_LOGICAL_SIZE_MODE" + +/** + * \brief A variable controlling whether the OpenGL render driver uses shaders if they are available. + * + * This variable can be set to the following values: + * "0" - Disable shaders + * "1" - Enable shaders + * + * By default shaders are used if OpenGL supports them. + */ +#define SDL_HINT_RENDER_OPENGL_SHADERS "SDL_RENDER_OPENGL_SHADERS" + +/** + * \brief A variable controlling the scaling quality + * + * This variable can be set to the following values: + * "0" or "nearest" - Nearest pixel sampling + * "1" or "linear" - Linear filtering (supported by OpenGL and Direct3D) + * "2" or "best" - Currently this is the same as "linear" + * + * By default nearest pixel sampling is used + */ +#define SDL_HINT_RENDER_SCALE_QUALITY "SDL_RENDER_SCALE_QUALITY" + +/** + * \brief A variable controlling whether updates to the SDL screen surface should be synchronized with the vertical refresh, to avoid tearing. + * + * This variable can be set to the following values: + * "0" - Disable vsync + * "1" - Enable vsync + * + * By default SDL does not sync screen surface updates with vertical refresh. + */ +#define SDL_HINT_RENDER_VSYNC "SDL_RENDER_VSYNC" + +/** + * \brief A variable controlling if VSYNC is automatically disable if doesn't reach the enough FPS + * + * This variable can be set to the following values: + * "0" - It will be using VSYNC as defined in the main flag. Default + * "1" - If VSYNC was previously enabled, then it will disable VSYNC if doesn't reach enough speed + * + * By default SDL does not enable the automatic VSYNC + */ +#define SDL_HINT_PS2_DYNAMIC_VSYNC "SDL_PS2_DYNAMIC_VSYNC" + +/** + * \brief A variable to control whether the return key on the soft keyboard + * should hide the soft keyboard on Android and iOS. + * + * The variable can be set to the following values: + * "0" - The return key will be handled as a key event. This is the behaviour of SDL <= 2.0.3. (default) + * "1" - The return key will hide the keyboard. + * + * The value of this hint is used at runtime, so it can be changed at any time. + */ +#define SDL_HINT_RETURN_KEY_HIDES_IME "SDL_RETURN_KEY_HIDES_IME" + +/** + * \brief Tell SDL which Dispmanx layer to use on a Raspberry PI + * + * Also known as Z-order. The variable can take a negative or positive value. + * The default is 10000. + */ +#define SDL_HINT_RPI_VIDEO_LAYER "SDL_RPI_VIDEO_LAYER" + +/** + * \brief Specify an "activity name" for screensaver inhibition. + * + * Some platforms, notably Linux desktops, list the applications which are + * inhibiting the screensaver or other power-saving features. + * + * This hint lets you specify the "activity name" sent to the OS when + * SDL_DisableScreenSaver() is used (or the screensaver is automatically + * disabled). The contents of this hint are used when the screensaver is + * disabled. You should use a string that describes what your program is doing + * (and, therefore, why the screensaver is disabled). For example, "Playing a + * game" or "Watching a video". + * + * Setting this to "" or leaving it unset will have SDL use a reasonable + * default: "Playing a game" or something similar. + * + * On targets where this is not supported, this hint does nothing. + */ +#define SDL_HINT_SCREENSAVER_INHIBIT_ACTIVITY_NAME "SDL_SCREENSAVER_INHIBIT_ACTIVITY_NAME" + +/** + * \brief Specifies whether SDL_THREAD_PRIORITY_TIME_CRITICAL should be treated as realtime. + * + * On some platforms, like Linux, a realtime priority thread may be subject to restrictions + * that require special handling by the application. This hint exists to let SDL know that + * the app is prepared to handle said restrictions. + * + * On Linux, SDL will apply the following configuration to any thread that becomes realtime: + * * The SCHED_RESET_ON_FORK bit will be set on the scheduling policy, + * * An RLIMIT_RTTIME budget will be configured to the rtkit specified limit. + * * Exceeding this limit will result in the kernel sending SIGKILL to the app, + * * Refer to the man pages for more information. + * + * This variable can be set to the following values: + * "0" - default platform specific behaviour + * "1" - Force SDL_THREAD_PRIORITY_TIME_CRITICAL to a realtime scheduling policy + */ +#define SDL_HINT_THREAD_FORCE_REALTIME_TIME_CRITICAL "SDL_THREAD_FORCE_REALTIME_TIME_CRITICAL" + +/** +* \brief A string specifying additional information to use with SDL_SetThreadPriority. +* +* By default SDL_SetThreadPriority will make appropriate system changes in order to +* apply a thread priority. For example on systems using pthreads the scheduler policy +* is changed automatically to a policy that works well with a given priority. +* Code which has specific requirements can override SDL's default behavior with this hint. +* +* pthread hint values are "current", "other", "fifo" and "rr". +* Currently no other platform hint values are defined but may be in the future. +* +* \note On Linux, the kernel may send SIGKILL to realtime tasks which exceed the distro +* configured execution budget for rtkit. This budget can be queried through RLIMIT_RTTIME +* after calling SDL_SetThreadPriority(). +*/ +#define SDL_HINT_THREAD_PRIORITY_POLICY "SDL_THREAD_PRIORITY_POLICY" + +/** +* \brief A string specifying SDL's threads stack size in bytes or "0" for the backend's default size +* +* Use this hint in case you need to set SDL's threads stack size to other than the default. +* This is specially useful if you build SDL against a non glibc libc library (such as musl) which +* provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses). +* Support for this hint is currently available only in the pthread, Windows, and PSP backend. +* +* Instead of this hint, in 2.0.9 and later, you can use +* SDL_CreateThreadWithStackSize(). This hint only works with the classic +* SDL_CreateThread(). +*/ +#define SDL_HINT_THREAD_STACK_SIZE "SDL_THREAD_STACK_SIZE" + +/** + * \brief A variable that controls the timer resolution, in milliseconds. + * + * The higher resolution the timer, the more frequently the CPU services + * timer interrupts, and the more precise delays are, but this takes up + * power and CPU time. This hint is only used on Windows. + * + * See this blog post for more information: + * http://randomascii.wordpress.com/2013/07/08/windows-timer-resolution-megawatts-wasted/ + * + * If this variable is set to "0", the system timer resolution is not set. + * + * The default value is "1". This hint may be set at any time. + */ +#define SDL_HINT_TIMER_RESOLUTION "SDL_TIMER_RESOLUTION" + +/** + * \brief A variable controlling whether touch events should generate synthetic mouse events + * + * This variable can be set to the following values: + * "0" - Touch events will not generate mouse events + * "1" - Touch events will generate mouse events + * + * By default SDL will generate mouse events for touch events + */ +#define SDL_HINT_TOUCH_MOUSE_EVENTS "SDL_TOUCH_MOUSE_EVENTS" + +/** + * \brief A variable controlling which touchpad should generate synthetic mouse events + * + * This variable can be set to the following values: + * "0" - Only front touchpad should generate mouse events. Default + * "1" - Only back touchpad should generate mouse events. + * "2" - Both touchpads should generate mouse events. + * + * By default SDL will generate mouse events for all touch devices + */ +#define SDL_HINT_VITA_TOUCH_MOUSE_DEVICE "SDL_HINT_VITA_TOUCH_MOUSE_DEVICE" + +/** + * \brief A variable controlling whether the Android / tvOS remotes + * should be listed as joystick devices, instead of sending keyboard events. + * + * This variable can be set to the following values: + * "0" - Remotes send enter/escape/arrow key events + * "1" - Remotes are available as 2 axis, 2 button joysticks (the default). + */ +#define SDL_HINT_TV_REMOTE_AS_JOYSTICK "SDL_TV_REMOTE_AS_JOYSTICK" + +/** + * \brief A variable controlling whether the screensaver is enabled. + * + * This variable can be set to the following values: + * "0" - Disable screensaver + * "1" - Enable screensaver + * + * By default SDL will disable the screensaver. + */ +#define SDL_HINT_VIDEO_ALLOW_SCREENSAVER "SDL_VIDEO_ALLOW_SCREENSAVER" + +/** + * \brief Tell the video driver that we only want a double buffer. + * + * By default, most lowlevel 2D APIs will use a triple buffer scheme that + * wastes no CPU time on waiting for vsync after issuing a flip, but + * introduces a frame of latency. On the other hand, using a double buffer + * scheme instead is recommended for cases where low latency is an important + * factor because we save a whole frame of latency. + * We do so by waiting for vsync immediately after issuing a flip, usually just + * after eglSwapBuffers call in the backend's *_SwapWindow function. + * + * Since it's driver-specific, it's only supported where possible and + * implemented. Currently supported the following drivers: + * + * - KMSDRM (kmsdrm) + * - Raspberry Pi (raspberrypi) + */ +#define SDL_HINT_VIDEO_DOUBLE_BUFFER "SDL_VIDEO_DOUBLE_BUFFER" + +/** + * \brief A variable controlling whether the EGL window is allowed to be + * composited as transparent, rather than opaque. + * + * Most window systems will always render windows opaque, even if the surface + * format has an alpha channel. This is not always true, however, so by default + * SDL will try to enforce opaque composition. To override this behavior, you + * can set this hint to "1". + */ +#define SDL_HINT_VIDEO_EGL_ALLOW_TRANSPARENCY "SDL_VIDEO_EGL_ALLOW_TRANSPARENCY" + +/** + * \brief A variable controlling whether the graphics context is externally managed. + * + * This variable can be set to the following values: + * "0" - SDL will manage graphics contexts that are attached to windows. + * "1" - Disable graphics context management on windows. + * + * By default SDL will manage OpenGL contexts in certain situations. For example, on Android the + * context will be automatically saved and restored when pausing the application. Additionally, some + * platforms will assume usage of OpenGL if Vulkan isn't used. Setting this to "1" will prevent this + * behavior, which is desireable when the application manages the graphics context, such as + * an externally managed OpenGL context or attaching a Vulkan surface to the window. + */ +#define SDL_HINT_VIDEO_EXTERNAL_CONTEXT "SDL_VIDEO_EXTERNAL_CONTEXT" + +/** + * \brief If set to 1, then do not allow high-DPI windows. ("Retina" on Mac and iOS) + */ +#define SDL_HINT_VIDEO_HIGHDPI_DISABLED "SDL_VIDEO_HIGHDPI_DISABLED" + +/** + * \brief A variable that dictates policy for fullscreen Spaces on Mac OS X. + * + * This hint only applies to Mac OS X. + * + * The variable can be set to the following values: + * "0" - Disable Spaces support (FULLSCREEN_DESKTOP won't use them and + * SDL_WINDOW_RESIZABLE windows won't offer the "fullscreen" + * button on their titlebars). + * "1" - Enable Spaces support (FULLSCREEN_DESKTOP will use them and + * SDL_WINDOW_RESIZABLE windows will offer the "fullscreen" + * button on their titlebars). + * + * The default value is "1". This hint must be set before any windows are created. + */ +#define SDL_HINT_VIDEO_MAC_FULLSCREEN_SPACES "SDL_VIDEO_MAC_FULLSCREEN_SPACES" + +/** + * \brief Minimize your SDL_Window if it loses key focus when in fullscreen mode. Defaults to false. + * \warning Before SDL 2.0.14, this defaulted to true! In 2.0.14, we're + * seeing if "true" causes more problems than it solves in modern times. + * + */ +#define SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS "SDL_VIDEO_MINIMIZE_ON_FOCUS_LOSS" + +/** + * \brief A variable controlling whether the libdecor Wayland backend is allowed to be used. + * + * This variable can be set to the following values: + * "0" - libdecor use is disabled. + * "1" - libdecor use is enabled (default). + * + * libdecor is used over xdg-shell when xdg-decoration protocol is unavailable. + */ +#define SDL_HINT_VIDEO_WAYLAND_ALLOW_LIBDECOR "SDL_VIDEO_WAYLAND_ALLOW_LIBDECOR" + +/** + * \brief A variable controlling whether the libdecor Wayland backend is preferred over native decrations. + * + * When this hint is set, libdecor will be used to provide window decorations, even if xdg-decoration is + * available. (Note that, by default, libdecor will use xdg-decoration itself if available). + * + * This variable can be set to the following values: + * "0" - libdecor is enabled only if server-side decorations are unavailable. + * "1" - libdecor is always enabled if available. + * + * libdecor is used over xdg-shell when xdg-decoration protocol is unavailable. + */ +#define SDL_HINT_VIDEO_WAYLAND_PREFER_LIBDECOR "SDL_VIDEO_WAYLAND_PREFER_LIBDECOR" + +/** + * \brief A variable controlling whether video mode emulation is enabled under Wayland. + * + * When this hint is set, a standard set of emulated CVT video modes will be exposed for use by the application. + * If it is disabled, the only modes exposed will be the logical desktop size and, in the case of a scaled + * desktop, the native display resolution. + * + * This variable can be set to the following values: + * "0" - Video mode emulation is disabled. + * "1" - Video mode emulation is enabled. + * + * By default video mode emulation is enabled. + */ +#define SDL_HINT_VIDEO_WAYLAND_MODE_EMULATION "SDL_VIDEO_WAYLAND_MODE_EMULATION" + +/** + * \brief Enable or disable mouse pointer warp emulation, needed by some older games. + * + * When this hint is set, any SDL will emulate mouse warps using relative mouse mode. + * This is required for some older games (such as Source engine games), which warp the + * mouse to the centre of the screen rather than using relative mouse motion. Note that + * relative mouse mode may have different mouse acceleration behaviour than pointer warps. + * + * This variable can be set to the following values: + * "0" - All mouse warps fail, as mouse warping is not available under wayland. + * "1" - Some mouse warps will be emulated by forcing relative mouse mode. + * + * If not set, this is automatically enabled unless an application uses relative mouse + * mode directly. + */ +#define SDL_HINT_VIDEO_WAYLAND_EMULATE_MOUSE_WARP "SDL_VIDEO_WAYLAND_EMULATE_MOUSE_WARP" + +/** +* \brief A variable that is the address of another SDL_Window* (as a hex string formatted with "%p"). +* +* If this hint is set before SDL_CreateWindowFrom() and the SDL_Window* it is set to has +* SDL_WINDOW_OPENGL set (and running on WGL only, currently), then two things will occur on the newly +* created SDL_Window: +* +* 1. Its pixel format will be set to the same pixel format as this SDL_Window. This is +* needed for example when sharing an OpenGL context across multiple windows. +* +* 2. The flag SDL_WINDOW_OPENGL will be set on the new window so it can be used for +* OpenGL rendering. +* +* This variable can be set to the following values: +* The address (as a string "%p") of the SDL_Window* that new windows created with SDL_CreateWindowFrom() should +* share a pixel format with. +*/ +#define SDL_HINT_VIDEO_WINDOW_SHARE_PIXEL_FORMAT "SDL_VIDEO_WINDOW_SHARE_PIXEL_FORMAT" + +/** + * \brief When calling SDL_CreateWindowFrom(), make the window compatible with OpenGL. + * + * This variable can be set to the following values: + * "0" - Don't add any graphics flags to the SDL_WindowFlags + * "1" - Add SDL_WINDOW_OPENGL to the SDL_WindowFlags + * + * By default SDL will not make the foreign window compatible with OpenGL. + */ +#define SDL_HINT_VIDEO_FOREIGN_WINDOW_OPENGL "SDL_VIDEO_FOREIGN_WINDOW_OPENGL" + +/** + * \brief When calling SDL_CreateWindowFrom(), make the window compatible with Vulkan. + * + * This variable can be set to the following values: + * "0" - Don't add any graphics flags to the SDL_WindowFlags + * "1" - Add SDL_WINDOW_VULKAN to the SDL_WindowFlags + * + * By default SDL will not make the foreign window compatible with Vulkan. + */ +#define SDL_HINT_VIDEO_FOREIGN_WINDOW_VULKAN "SDL_VIDEO_FOREIGN_WINDOW_VULKAN" + +/** +* \brief A variable specifying which shader compiler to preload when using the Chrome ANGLE binaries +* +* SDL has EGL and OpenGL ES2 support on Windows via the ANGLE project. It +* can use two different sets of binaries, those compiled by the user from source +* or those provided by the Chrome browser. In the later case, these binaries require +* that SDL loads a DLL providing the shader compiler. +* +* This variable can be set to the following values: +* "d3dcompiler_46.dll" - default, best for Vista or later. +* "d3dcompiler_43.dll" - for XP support. +* "none" - do not load any library, useful if you compiled ANGLE from source and included the compiler in your binaries. +* +*/ +#define SDL_HINT_VIDEO_WIN_D3DCOMPILER "SDL_VIDEO_WIN_D3DCOMPILER" + +/** + * \brief A variable controlling whether X11 should use GLX or EGL by default + * + * This variable can be set to the following values: + * "0" - Use GLX + * "1" - Use EGL + * + * By default SDL will use GLX when both are present. + */ +#define SDL_HINT_VIDEO_X11_FORCE_EGL "SDL_VIDEO_X11_FORCE_EGL" + +/** + * \brief A variable controlling whether the X11 _NET_WM_BYPASS_COMPOSITOR hint should be used. + * + * This variable can be set to the following values: + * "0" - Disable _NET_WM_BYPASS_COMPOSITOR + * "1" - Enable _NET_WM_BYPASS_COMPOSITOR + * + * By default SDL will use _NET_WM_BYPASS_COMPOSITOR + * + */ +#define SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR "SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR" + +/** + * \brief A variable controlling whether the X11 _NET_WM_PING protocol should be supported. + * + * This variable can be set to the following values: + * "0" - Disable _NET_WM_PING + * "1" - Enable _NET_WM_PING + * + * By default SDL will use _NET_WM_PING, but for applications that know they + * will not always be able to respond to ping requests in a timely manner they can + * turn it off to avoid the window manager thinking the app is hung. + * The hint is checked in CreateWindow. + */ +#define SDL_HINT_VIDEO_X11_NET_WM_PING "SDL_VIDEO_X11_NET_WM_PING" + +/** + * \brief A variable forcing the visual ID chosen for new X11 windows + * + */ +#define SDL_HINT_VIDEO_X11_WINDOW_VISUALID "SDL_VIDEO_X11_WINDOW_VISUALID" + +/** + * \brief A no-longer-used variable controlling whether the X11 Xinerama extension should be used. + * + * Before SDL 2.0.24, this would let apps and users disable Xinerama support on X11. + * Now SDL never uses Xinerama, and does not check for this hint at all. + * The preprocessor define is left here for source compatibility. + */ +#define SDL_HINT_VIDEO_X11_XINERAMA "SDL_VIDEO_X11_XINERAMA" + +/** + * \brief A variable controlling whether the X11 XRandR extension should be used. + * + * This variable can be set to the following values: + * "0" - Disable XRandR + * "1" - Enable XRandR + * + * By default SDL will use XRandR. + */ +#define SDL_HINT_VIDEO_X11_XRANDR "SDL_VIDEO_X11_XRANDR" + +/** + * \brief A no-longer-used variable controlling whether the X11 VidMode extension should be used. + * + * Before SDL 2.0.24, this would let apps and users disable XVidMode support on X11. + * Now SDL never uses XVidMode, and does not check for this hint at all. + * The preprocessor define is left here for source compatibility. + */ +#define SDL_HINT_VIDEO_X11_XVIDMODE "SDL_VIDEO_X11_XVIDMODE" + +/** + * \brief Controls how the fact chunk affects the loading of a WAVE file. + * + * The fact chunk stores information about the number of samples of a WAVE + * file. The Standards Update from Microsoft notes that this value can be used + * to 'determine the length of the data in seconds'. This is especially useful + * for compressed formats (for which this is a mandatory chunk) if they produce + * multiple sample frames per block and truncating the block is not allowed. + * The fact chunk can exactly specify how many sample frames there should be + * in this case. + * + * Unfortunately, most application seem to ignore the fact chunk and so SDL + * ignores it by default as well. + * + * This variable can be set to the following values: + * + * "truncate" - Use the number of samples to truncate the wave data if + * the fact chunk is present and valid + * "strict" - Like "truncate", but raise an error if the fact chunk + * is invalid, not present for non-PCM formats, or if the + * data chunk doesn't have that many samples + * "ignorezero" - Like "truncate", but ignore fact chunk if the number of + * samples is zero + * "ignore" - Ignore fact chunk entirely (default) + */ +#define SDL_HINT_WAVE_FACT_CHUNK "SDL_WAVE_FACT_CHUNK" + +/** + * \brief Controls how the size of the RIFF chunk affects the loading of a WAVE file. + * + * The size of the RIFF chunk (which includes all the sub-chunks of the WAVE + * file) is not always reliable. In case the size is wrong, it's possible to + * just ignore it and step through the chunks until a fixed limit is reached. + * + * Note that files that have trailing data unrelated to the WAVE file or + * corrupt files may slow down the loading process without a reliable boundary. + * By default, SDL stops after 10000 chunks to prevent wasting time. Use the + * environment variable SDL_WAVE_CHUNK_LIMIT to adjust this value. + * + * This variable can be set to the following values: + * + * "force" - Always use the RIFF chunk size as a boundary for the chunk search + * "ignorezero" - Like "force", but a zero size searches up to 4 GiB (default) + * "ignore" - Ignore the RIFF chunk size and always search up to 4 GiB + * "maximum" - Search for chunks until the end of file (not recommended) + */ +#define SDL_HINT_WAVE_RIFF_CHUNK_SIZE "SDL_WAVE_RIFF_CHUNK_SIZE" + +/** + * \brief Controls how a truncated WAVE file is handled. + * + * A WAVE file is considered truncated if any of the chunks are incomplete or + * the data chunk size is not a multiple of the block size. By default, SDL + * decodes until the first incomplete block, as most applications seem to do. + * + * This variable can be set to the following values: + * + * "verystrict" - Raise an error if the file is truncated + * "strict" - Like "verystrict", but the size of the RIFF chunk is ignored + * "dropframe" - Decode until the first incomplete sample frame + * "dropblock" - Decode until the first incomplete block (default) + */ +#define SDL_HINT_WAVE_TRUNCATION "SDL_WAVE_TRUNCATION" + +/** + * \brief Tell SDL not to name threads on Windows with the 0x406D1388 Exception. + * The 0x406D1388 Exception is a trick used to inform Visual Studio of a + * thread's name, but it tends to cause problems with other debuggers, + * and the .NET runtime. Note that SDL 2.0.6 and later will still use + * the (safer) SetThreadDescription API, introduced in the Windows 10 + * Creators Update, if available. + * + * The variable can be set to the following values: + * "0" - SDL will raise the 0x406D1388 Exception to name threads. + * This is the default behavior of SDL <= 2.0.4. + * "1" - SDL will not raise this exception, and threads will be unnamed. (default) + * This is necessary with .NET languages or debuggers that aren't Visual Studio. + */ +#define SDL_HINT_WINDOWS_DISABLE_THREAD_NAMING "SDL_WINDOWS_DISABLE_THREAD_NAMING" + +/** + * \brief A variable controlling whether the windows message loop is processed by SDL + * + * This variable can be set to the following values: + * "0" - The window message loop is not run + * "1" - The window message loop is processed in SDL_PumpEvents() + * + * By default SDL will process the windows message loop + */ +#define SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP "SDL_WINDOWS_ENABLE_MESSAGELOOP" + +/** + * \brief Force SDL to use Critical Sections for mutexes on Windows. + * On Windows 7 and newer, Slim Reader/Writer Locks are available. + * They offer better performance, allocate no kernel ressources and + * use less memory. SDL will fall back to Critical Sections on older + * OS versions or if forced to by this hint. + * + * This variable can be set to the following values: + * "0" - Use SRW Locks when available. If not, fall back to Critical Sections. (default) + * "1" - Force the use of Critical Sections in all cases. + * + */ +#define SDL_HINT_WINDOWS_FORCE_MUTEX_CRITICAL_SECTIONS "SDL_WINDOWS_FORCE_MUTEX_CRITICAL_SECTIONS" + +/** + * \brief Force SDL to use Kernel Semaphores on Windows. + * Kernel Semaphores are inter-process and require a context + * switch on every interaction. On Windows 8 and newer, the + * WaitOnAddress API is available. Using that and atomics to + * implement semaphores increases performance. + * SDL will fall back to Kernel Objects on older OS versions + * or if forced to by this hint. + * + * This variable can be set to the following values: + * "0" - Use Atomics and WaitOnAddress API when available. If not, fall back to Kernel Objects. (default) + * "1" - Force the use of Kernel Objects in all cases. + * + */ +#define SDL_HINT_WINDOWS_FORCE_SEMAPHORE_KERNEL "SDL_WINDOWS_FORCE_SEMAPHORE_KERNEL" + +/** + * \brief A variable to specify custom icon resource id from RC file on Windows platform + */ +#define SDL_HINT_WINDOWS_INTRESOURCE_ICON "SDL_WINDOWS_INTRESOURCE_ICON" +#define SDL_HINT_WINDOWS_INTRESOURCE_ICON_SMALL "SDL_WINDOWS_INTRESOURCE_ICON_SMALL" + +/** + * \brief Tell SDL not to generate window-close events for Alt+F4 on Windows. + * + * The variable can be set to the following values: + * "0" - SDL will generate a window-close event when it sees Alt+F4. + * "1" - SDL will only do normal key handling for Alt+F4. + */ +#define SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4 "SDL_WINDOWS_NO_CLOSE_ON_ALT_F4" + +/** + * \brief Use the D3D9Ex API introduced in Windows Vista, instead of normal D3D9. + * Direct3D 9Ex contains changes to state management that can eliminate device + * loss errors during scenarios like Alt+Tab or UAC prompts. D3D9Ex may require + * some changes to your application to cope with the new behavior, so this + * is disabled by default. + * + * This hint must be set before initializing the video subsystem. + * + * For more information on Direct3D 9Ex, see: + * - https://docs.microsoft.com/en-us/windows/win32/direct3darticles/graphics-apis-in-windows-vista#direct3d-9ex + * - https://docs.microsoft.com/en-us/windows/win32/direct3darticles/direct3d-9ex-improvements + * + * This variable can be set to the following values: + * "0" - Use the original Direct3D 9 API (default) + * "1" - Use the Direct3D 9Ex API on Vista and later (and fall back if D3D9Ex is unavailable) + * + */ +#define SDL_HINT_WINDOWS_USE_D3D9EX "SDL_WINDOWS_USE_D3D9EX" + +/** + * \brief Controls whether SDL will declare the process to be DPI aware. + * + * This hint must be set before initializing the video subsystem. + * + * The main purpose of declaring DPI awareness is to disable OS bitmap scaling of SDL windows on monitors with + * a DPI scale factor. + * + * This hint is equivalent to requesting DPI awareness via external means (e.g. calling SetProcessDpiAwarenessContext) + * and does not cause SDL to use a virtualized coordinate system, so it will generally give you 1 SDL coordinate = 1 pixel + * even on high-DPI displays. + * + * For more information, see: + * https://docs.microsoft.com/en-us/windows/win32/hidpi/high-dpi-desktop-application-development-on-windows + * + * This variable can be set to the following values: + * "" - Do not change the DPI awareness (default). + * "unaware" - Declare the process as DPI unaware. (Windows 8.1 and later). + * "system" - Request system DPI awareness. (Vista and later). + * "permonitor" - Request per-monitor DPI awareness. (Windows 8.1 and later). + * "permonitorv2" - Request per-monitor V2 DPI awareness. (Windows 10, version 1607 and later). + * The most visible difference from "permonitor" is that window title bar will be scaled + * to the visually correct size when dragging between monitors with different scale factors. + * This is the preferred DPI awareness level. + * + * If the requested DPI awareness is not available on the currently running OS, SDL will try to request the best + * available match. + */ +#define SDL_HINT_WINDOWS_DPI_AWARENESS "SDL_WINDOWS_DPI_AWARENESS" + +/** + * \brief Uses DPI-scaled points as the SDL coordinate system on Windows. + * + * This changes the SDL coordinate system units to be DPI-scaled points, rather than pixels everywhere. + * This means windows will be appropriately sized, even when created on high-DPI displays with scaling. + * + * e.g. requesting a 640x480 window from SDL, on a display with 125% scaling in Windows display settings, + * will create a window with an 800x600 client area (in pixels). + * + * Setting this to "1" implicitly requests process DPI awareness (setting SDL_WINDOWS_DPI_AWARENESS is unnecessary), + * and forces SDL_WINDOW_ALLOW_HIGHDPI on all windows. + * + * This variable can be set to the following values: + * "0" - SDL coordinates equal Windows coordinates. No automatic window resizing when dragging + * between monitors with different scale factors (unless this is performed by + * Windows itself, which is the case when the process is DPI unaware). + * "1" - SDL coordinates are in DPI-scaled points. Automatically resize windows as needed on + * displays with non-100% scale factors. + */ +#define SDL_HINT_WINDOWS_DPI_SCALING "SDL_WINDOWS_DPI_SCALING" + +/** + * \brief A variable controlling whether the window frame and title bar are interactive when the cursor is hidden + * + * This variable can be set to the following values: + * "0" - The window frame is not interactive when the cursor is hidden (no move, resize, etc) + * "1" - The window frame is interactive when the cursor is hidden + * + * By default SDL will allow interaction with the window frame when the cursor is hidden + */ +#define SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN "SDL_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN" + +/** +* \brief A variable controlling whether the window is activated when the SDL_ShowWindow function is called +* +* This variable can be set to the following values: +* "0" - The window is activated when the SDL_ShowWindow function is called +* "1" - The window is not activated when the SDL_ShowWindow function is called +* +* By default SDL will activate the window when the SDL_ShowWindow function is called +*/ +#define SDL_HINT_WINDOW_NO_ACTIVATION_WHEN_SHOWN "SDL_WINDOW_NO_ACTIVATION_WHEN_SHOWN" + +/** \brief Allows back-button-press events on Windows Phone to be marked as handled + * + * Windows Phone devices typically feature a Back button. When pressed, + * the OS will emit back-button-press events, which apps are expected to + * handle in an appropriate manner. If apps do not explicitly mark these + * events as 'Handled', then the OS will invoke its default behavior for + * unhandled back-button-press events, which on Windows Phone 8 and 8.1 is to + * terminate the app (and attempt to switch to the previous app, or to the + * device's home screen). + * + * Setting the SDL_HINT_WINRT_HANDLE_BACK_BUTTON hint to "1" will cause SDL + * to mark back-button-press events as Handled, if and when one is sent to + * the app. + * + * Internally, Windows Phone sends back button events as parameters to + * special back-button-press callback functions. Apps that need to respond + * to back-button-press events are expected to register one or more + * callback functions for such, shortly after being launched (during the + * app's initialization phase). After the back button is pressed, the OS + * will invoke these callbacks. If the app's callback(s) do not explicitly + * mark the event as handled by the time they return, or if the app never + * registers one of these callback, the OS will consider the event + * un-handled, and it will apply its default back button behavior (terminate + * the app). + * + * SDL registers its own back-button-press callback with the Windows Phone + * OS. This callback will emit a pair of SDL key-press events (SDL_KEYDOWN + * and SDL_KEYUP), each with a scancode of SDL_SCANCODE_AC_BACK, after which + * it will check the contents of the hint, SDL_HINT_WINRT_HANDLE_BACK_BUTTON. + * If the hint's value is set to "1", the back button event's Handled + * property will get set to 'true'. If the hint's value is set to something + * else, or if it is unset, SDL will leave the event's Handled property + * alone. (By default, the OS sets this property to 'false', to note.) + * + * SDL apps can either set SDL_HINT_WINRT_HANDLE_BACK_BUTTON well before a + * back button is pressed, or can set it in direct-response to a back button + * being pressed. + * + * In order to get notified when a back button is pressed, SDL apps should + * register a callback function with SDL_AddEventWatch(), and have it listen + * for SDL_KEYDOWN events that have a scancode of SDL_SCANCODE_AC_BACK. + * (Alternatively, SDL_KEYUP events can be listened-for. Listening for + * either event type is suitable.) Any value of SDL_HINT_WINRT_HANDLE_BACK_BUTTON + * set by such a callback, will be applied to the OS' current + * back-button-press event. + * + * More details on back button behavior in Windows Phone apps can be found + * at the following page, on Microsoft's developer site: + * http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj247550(v=vs.105).aspx + */ +#define SDL_HINT_WINRT_HANDLE_BACK_BUTTON "SDL_WINRT_HANDLE_BACK_BUTTON" + +/** \brief Label text for a WinRT app's privacy policy link + * + * Network-enabled WinRT apps must include a privacy policy. On Windows 8, 8.1, and RT, + * Microsoft mandates that this policy be available via the Windows Settings charm. + * SDL provides code to add a link there, with its label text being set via the + * optional hint, SDL_HINT_WINRT_PRIVACY_POLICY_LABEL. + * + * Please note that a privacy policy's contents are not set via this hint. A separate + * hint, SDL_HINT_WINRT_PRIVACY_POLICY_URL, is used to link to the actual text of the + * policy. + * + * The contents of this hint should be encoded as a UTF8 string. + * + * The default value is "Privacy Policy". This hint should only be set during app + * initialization, preferably before any calls to SDL_Init(). + * + * For additional information on linking to a privacy policy, see the documentation for + * SDL_HINT_WINRT_PRIVACY_POLICY_URL. + */ +#define SDL_HINT_WINRT_PRIVACY_POLICY_LABEL "SDL_WINRT_PRIVACY_POLICY_LABEL" + +/** + * \brief A URL to a WinRT app's privacy policy + * + * All network-enabled WinRT apps must make a privacy policy available to its + * users. On Windows 8, 8.1, and RT, Microsoft mandates that this policy be + * be available in the Windows Settings charm, as accessed from within the app. + * SDL provides code to add a URL-based link there, which can point to the app's + * privacy policy. + * + * To setup a URL to an app's privacy policy, set SDL_HINT_WINRT_PRIVACY_POLICY_URL + * before calling any SDL_Init() functions. The contents of the hint should + * be a valid URL. For example, "http://www.example.com". + * + * The default value is "", which will prevent SDL from adding a privacy policy + * link to the Settings charm. This hint should only be set during app init. + * + * The label text of an app's "Privacy Policy" link may be customized via another + * hint, SDL_HINT_WINRT_PRIVACY_POLICY_LABEL. + * + * Please note that on Windows Phone, Microsoft does not provide standard UI + * for displaying a privacy policy link, and as such, SDL_HINT_WINRT_PRIVACY_POLICY_URL + * will not get used on that platform. Network-enabled phone apps should display + * their privacy policy through some other, in-app means. + */ +#define SDL_HINT_WINRT_PRIVACY_POLICY_URL "SDL_WINRT_PRIVACY_POLICY_URL" + +/** + * \brief Mark X11 windows as override-redirect. + * + * If set, this _might_ increase framerate at the expense of the desktop + * not working as expected. Override-redirect windows aren't noticed by the + * window manager at all. + * + * You should probably only use this for fullscreen windows, and you probably + * shouldn't even use it for that. But it's here if you want to try! + */ +#define SDL_HINT_X11_FORCE_OVERRIDE_REDIRECT "SDL_X11_FORCE_OVERRIDE_REDIRECT" + +/** + * \brief A variable that lets you disable the detection and use of Xinput gamepad devices + * + * The variable can be set to the following values: + * "0" - Disable XInput detection (only uses direct input) + * "1" - Enable XInput detection (the default) + */ +#define SDL_HINT_XINPUT_ENABLED "SDL_XINPUT_ENABLED" + + /** + * \brief A variable that lets you disable the detection and use of DirectInput gamepad devices + * + * The variable can be set to the following values: + * "0" - Disable DirectInput detection (only uses XInput) + * "1" - Enable DirectInput detection (the default) + */ +#define SDL_HINT_DIRECTINPUT_ENABLED "SDL_DIRECTINPUT_ENABLED" + +/** + * \brief A variable that causes SDL to use the old axis and button mapping for XInput devices. + * + * This hint is for backwards compatibility only and will be removed in SDL 2.1 + * + * The default value is "0". This hint must be set before SDL_Init() + */ +#define SDL_HINT_XINPUT_USE_OLD_JOYSTICK_MAPPING "SDL_XINPUT_USE_OLD_JOYSTICK_MAPPING" + +/** + * \brief A variable that causes SDL to not ignore audio "monitors" + * + * This is currently only used for PulseAudio and ignored elsewhere. + * + * By default, SDL ignores audio devices that aren't associated with physical + * hardware. Changing this hint to "1" will expose anything SDL sees that + * appears to be an audio source or sink. This will add "devices" to the list + * that the user probably doesn't want or need, but it can be useful in + * scenarios where you want to hook up SDL to some sort of virtual device, + * etc. + * + * The default value is "0". This hint must be set before SDL_Init(). + * + * This hint is available since SDL 2.0.16. Before then, virtual devices are + * always ignored. + */ +#define SDL_HINT_AUDIO_INCLUDE_MONITORS "SDL_AUDIO_INCLUDE_MONITORS" + +/** + * \brief A variable that forces X11 windows to create as a custom type. + * + * This is currently only used for X11 and ignored elsewhere. + * + * During SDL_CreateWindow, SDL uses the _NET_WM_WINDOW_TYPE X11 property + * to report to the window manager the type of window it wants to create. + * This might be set to various things if SDL_WINDOW_TOOLTIP or + * SDL_WINDOW_POPUP_MENU, etc, were specified. For "normal" windows that + * haven't set a specific type, this hint can be used to specify a custom + * type. For example, a dock window might set this to + * "_NET_WM_WINDOW_TYPE_DOCK". + * + * If not set or set to "", this hint is ignored. This hint must be set + * before the SDL_CreateWindow() call that it is intended to affect. + * + * This hint is available since SDL 2.0.22. + */ +#define SDL_HINT_X11_WINDOW_TYPE "SDL_X11_WINDOW_TYPE" + +/** + * \brief A variable that decides whether to send SDL_QUIT when closing the final window. + * + * By default, SDL sends an SDL_QUIT event when there is only one window + * and it receives an SDL_WINDOWEVENT_CLOSE event, under the assumption most + * apps would also take the loss of this window as a signal to terminate the + * program. + * + * However, it's not unreasonable in some cases to have the program continue + * to live on, perhaps to create new windows later. + * + * Changing this hint to "0" will cause SDL to not send an SDL_QUIT event + * when the final window is requesting to close. Note that in this case, + * there are still other legitimate reasons one might get an SDL_QUIT + * event: choosing "Quit" from the macOS menu bar, sending a SIGINT (ctrl-c) + * on Unix, etc. + * + * The default value is "1". This hint can be changed at any time. + * + * This hint is available since SDL 2.0.22. Before then, you always get + * an SDL_QUIT event when closing the final window. + */ +#define SDL_HINT_QUIT_ON_LAST_WINDOW_CLOSE "SDL_QUIT_ON_LAST_WINDOW_CLOSE" + + +/** + * \brief A variable that decides what video backend to use. + * + * By default, SDL will try all available video backends in a reasonable + * order until it finds one that can work, but this hint allows the app + * or user to force a specific target, such as "x11" if, say, you are + * on Wayland but want to try talking to the X server instead. + * + * This functionality has existed since SDL 2.0.0 (indeed, before that) + * but before 2.0.22 this was an environment variable only. In 2.0.22, + * it was upgraded to a full SDL hint, so you can set the environment + * variable as usual or programatically set the hint with SDL_SetHint, + * which won't propagate to child processes. + * + * The default value is unset, in which case SDL will try to figure out + * the best video backend on your behalf. This hint needs to be set + * before SDL_Init() is called to be useful. + * + * This hint is available since SDL 2.0.22. Before then, you could set + * the environment variable to get the same effect. + */ +#define SDL_HINT_VIDEODRIVER "SDL_VIDEODRIVER" + +/** + * \brief A variable that decides what audio backend to use. + * + * By default, SDL will try all available audio backends in a reasonable + * order until it finds one that can work, but this hint allows the app + * or user to force a specific target, such as "alsa" if, say, you are + * on PulseAudio but want to try talking to the lower level instead. + * + * This functionality has existed since SDL 2.0.0 (indeed, before that) + * but before 2.0.22 this was an environment variable only. In 2.0.22, + * it was upgraded to a full SDL hint, so you can set the environment + * variable as usual or programatically set the hint with SDL_SetHint, + * which won't propagate to child processes. + * + * The default value is unset, in which case SDL will try to figure out + * the best audio backend on your behalf. This hint needs to be set + * before SDL_Init() is called to be useful. + * + * This hint is available since SDL 2.0.22. Before then, you could set + * the environment variable to get the same effect. + */ +#define SDL_HINT_AUDIODRIVER "SDL_AUDIODRIVER" + +/** + * \brief A variable that decides what KMSDRM device to use. + * + * Internally, SDL might open something like "/dev/dri/cardNN" to + * access KMSDRM functionality, where "NN" is a device index number. + * + * SDL makes a guess at the best index to use (usually zero), but the + * app or user can set this hint to a number between 0 and 99 to + * force selection. + * + * This hint is available since SDL 2.24.0. + */ +#define SDL_HINT_KMSDRM_DEVICE_INDEX "SDL_KMSDRM_DEVICE_INDEX" + + +/** + * \brief A variable that treats trackpads as touch devices. + * + * On macOS (and possibly other platforms in the future), SDL will report + * touches on a trackpad as mouse input, which is generally what users + * expect from this device; however, these are often actually full + * multitouch-capable touch devices, so it might be preferable to some apps + * to treat them as such. + * + * Setting this hint to true will make the trackpad input report as a + * multitouch device instead of a mouse. The default is false. + * + * Note that most platforms don't support this hint. As of 2.24.0, it + * only supports MacBooks' trackpads on macOS. Others may follow later. + * + * This hint is checked during SDL_Init and can not be changed after. + * + * This hint is available since SDL 2.24.0. + */ +#define SDL_HINT_TRACKPAD_IS_TOUCH_ONLY "SDL_TRACKPAD_IS_TOUCH_ONLY" + + +/** + * \brief An enumeration of hint priorities + */ +typedef enum +{ + SDL_HINT_DEFAULT, + SDL_HINT_NORMAL, + SDL_HINT_OVERRIDE +} SDL_HintPriority; + + +/** + * Set a hint with a specific priority. + * + * The priority controls the behavior when setting a hint that already has a + * value. Hints will replace existing hints of their priority and lower. + * Environment variables are considered to have override priority. + * + * \param name the hint to set + * \param value the value of the hint variable + * \param priority the SDL_HintPriority level for the hint + * \returns SDL_TRUE if the hint was set, SDL_FALSE otherwise. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_GetHint + * \sa SDL_SetHint + */ +extern DECLSPEC SDL_bool SDLCALL SDL_SetHintWithPriority(const char *name, + const char *value, + SDL_HintPriority priority); + +/** + * Set a hint with normal priority. + * + * Hints will not be set if there is an existing override hint or environment + * variable that takes precedence. You can use SDL_SetHintWithPriority() to + * set the hint with override priority instead. + * + * \param name the hint to set + * \param value the value of the hint variable + * \returns SDL_TRUE if the hint was set, SDL_FALSE otherwise. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_GetHint + * \sa SDL_SetHintWithPriority + */ +extern DECLSPEC SDL_bool SDLCALL SDL_SetHint(const char *name, + const char *value); + +/** + * Reset a hint to the default value. + * + * This will reset a hint to the value of the environment variable, or NULL if + * the environment isn't set. Callbacks will be called normally with this + * change. + * + * \param name the hint to set + * \returns SDL_TRUE if the hint was set, SDL_FALSE otherwise. + * + * \since This function is available since SDL 2.24.0. + * + * \sa SDL_GetHint + * \sa SDL_SetHint + */ +extern DECLSPEC SDL_bool SDLCALL SDL_ResetHint(const char *name); + +/** + * Reset all hints to the default values. + * + * This will reset all hints to the value of the associated environment + * variable, or NULL if the environment isn't set. Callbacks will be called + * normally with this change. + * + * \since This function is available since SDL 2.26.0. + * + * \sa SDL_GetHint + * \sa SDL_SetHint + * \sa SDL_ResetHint + */ +extern DECLSPEC void SDLCALL SDL_ResetHints(void); + +/** + * Get the value of a hint. + * + * \param name the hint to query + * \returns the string value of a hint or NULL if the hint isn't set. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_SetHint + * \sa SDL_SetHintWithPriority + */ +extern DECLSPEC const char * SDLCALL SDL_GetHint(const char *name); + +/** + * Get the boolean value of a hint variable. + * + * \param name the name of the hint to get the boolean value from + * \param default_value the value to return if the hint does not exist + * \returns the boolean value of a hint or the provided default value if the + * hint does not exist. + * + * \since This function is available since SDL 2.0.5. + * + * \sa SDL_GetHint + * \sa SDL_SetHint + */ +extern DECLSPEC SDL_bool SDLCALL SDL_GetHintBoolean(const char *name, SDL_bool default_value); + +/** + * Type definition of the hint callback function. + * + * \param userdata what was passed as `userdata` to SDL_AddHintCallback() + * \param name what was passed as `name` to SDL_AddHintCallback() + * \param oldValue the previous hint value + * \param newValue the new value hint is to be set to + */ +typedef void (SDLCALL *SDL_HintCallback)(void *userdata, const char *name, const char *oldValue, const char *newValue); + +/** + * Add a function to watch a particular hint. + * + * \param name the hint to watch + * \param callback An SDL_HintCallback function that will be called when the + * hint value changes + * \param userdata a pointer to pass to the callback function + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_DelHintCallback + */ +extern DECLSPEC void SDLCALL SDL_AddHintCallback(const char *name, + SDL_HintCallback callback, + void *userdata); + +/** + * Remove a function watching a particular hint. + * + * \param name the hint being watched + * \param callback An SDL_HintCallback function that will be called when the + * hint value changes + * \param userdata a pointer being passed to the callback function + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_AddHintCallback + */ +extern DECLSPEC void SDLCALL SDL_DelHintCallback(const char *name, + SDL_HintCallback callback, + void *userdata); + +/** + * Clear all hints. + * + * This function is automatically called during SDL_Quit(), and deletes all + * callbacks without calling them and frees all memory associated with hints. + * If you're calling this from application code you probably want to call + * SDL_ResetHints() instead. + * + * This function will be removed from the API the next time we rev the ABI. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ResetHints + */ +extern DECLSPEC void SDLCALL SDL_ClearHints(void); + + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_hints_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |