diff options
Diffstat (limited to 'include/SDL2/SDL_hints.h')
| -rw-r--r-- | include/SDL2/SDL_hints.h | 517 |
1 files changed, 517 insertions, 0 deletions
diff --git a/include/SDL2/SDL_hints.h b/include/SDL2/SDL_hints.h new file mode 100644 index 0000000..b98ce68 --- /dev/null +++ b/include/SDL2/SDL_hints.h @@ -0,0 +1,517 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2014 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 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 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" + * "opengl" + * "opengles2" + * "opengles" + * "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 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 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 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_HINT_RENDER_DIRECT3D11_DEBUG" + +/** + * \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 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 A variable controlling whether the X11 VidMode extension should be used. + * + * This variable can be set to the following values: + * "0" - Disable XVidMode + * "1" - Enable XVidMode + * + * By default SDL will use XVidMode if it is available. + */ +#define SDL_HINT_VIDEO_X11_XVIDMODE "SDL_VIDEO_X11_XVIDMODE" + +/** + * \brief A variable controlling whether the X11 Xinerama extension should be used. + * + * This variable can be set to the following values: + * "0" - Disable Xinerama + * "1" - Enable Xinerama + * + * By default SDL will use Xinerama if it is available. + */ +#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 not use XRandR because of window manager issues. + */ +#define SDL_HINT_VIDEO_X11_XRANDR "SDL_VIDEO_X11_XRANDR" + +/** + * \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 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 Minimize your SDL_Window if it loses key focus when in fullscreen mode. Defaults to true. + * + */ +#define SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS "SDL_VIDEO_MINIMIZE_ON_FOCUS_LOSS" + +/** + * \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. + * + * 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 controlling which orientations are allowed on iOS. + * + * 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 whether an Android built-in accelerometer should be + * listed as a joystick device, rather than listing actual joysticks only. + * + * This variable can be set to the following values: + * "0" - List only real joysticks and accept input from them + * "1" - List real joysticks along with the accelerometer as if it were a 3 axis joystick (the default). + */ +#define SDL_HINT_ACCELEROMETER_AS_JOYSTICK "SDL_ACCELEROMETER_AS_JOYSTICK" + + +/** + * \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 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 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 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 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 7 and earlier. + * + * 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 If set to 1, then do not allow high-DPI windows. ("Retina" on Mac) + */ +#define SDL_HINT_VIDEO_HIGHDPI_DISABLED "SDL_VIDEO_HIGHDPI_DISABLED" + +/** + * \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 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 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 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_HINT_WINRT_PRIVACY_POLICY_URL" + +/** \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 it's 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_HINT_WINRT_PRIVACY_POLICY_LABEL" + +/** \brief If set to 1, back button press events on Windows Phone 8+ will be marked as handled. + * + * TODO, WinRT: document SDL_HINT_WINRT_HANDLE_BACK_BUTTON need and use + * For now, more details on why this is needed can be found at the + * beginning of the following web page: + * http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj247550(v=vs.105).aspx + */ +#define SDL_HINT_WINRT_HANDLE_BACK_BUTTON "SDL_HINT_WINRT_HANDLE_BACK_BUTTON" + +/** + * \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". Spaces are disabled regardless of this hint if + * the OS isn't at least Mac OS X Lion (10.7). This hint must be set before + * any windows are created. + */ +#define SDL_HINT_VIDEO_MAC_FULLSCREEN_SPACES "SDL_VIDEO_MAC_FULLSCREEN_SPACES" + + +/** + * \brief An enumeration of hint priorities + */ +typedef enum +{ + SDL_HINT_DEFAULT, + SDL_HINT_NORMAL, + SDL_HINT_OVERRIDE +} SDL_HintPriority; + + +/** + * \brief 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. + * + * \return SDL_TRUE if the hint was set, SDL_FALSE otherwise + */ +extern DECLSPEC SDL_bool SDLCALL SDL_SetHintWithPriority(const char *name, + const char *value, + SDL_HintPriority priority); + +/** + * \brief Set a hint with normal priority + * + * \return SDL_TRUE if the hint was set, SDL_FALSE otherwise + */ +extern DECLSPEC SDL_bool SDLCALL SDL_SetHint(const char *name, + const char *value); + +/** + * \brief Get a hint + * + * \return The string value of a hint variable. + */ +extern DECLSPEC const char * SDLCALL SDL_GetHint(const char *name); + +/** + * \brief Add a function to watch a particular hint + * + * \param name The hint to watch + * \param callback The function to call when the hint value changes + * \param userdata A pointer to pass to the callback function + */ +typedef void (*SDL_HintCallback)(void *userdata, const char *name, const char *oldValue, const char *newValue); +extern DECLSPEC void SDLCALL SDL_AddHintCallback(const char *name, + SDL_HintCallback callback, + void *userdata); + +/** + * \brief Remove a function watching a particular hint + * + * \param name The hint being watched + * \param callback The function being called when the hint value changes + * \param userdata A pointer being passed to the callback function + */ +extern DECLSPEC void SDLCALL SDL_DelHintCallback(const char *name, + SDL_HintCallback callback, + void *userdata); + +/** + * \brief Clear all hints + * + * This function is called during SDL_Quit() to free stored hints. + */ +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: */ |