mirror of https://github.com/PCSX2/pcsx2.git
171 lines
5.3 KiB
C
171 lines
5.3 KiB
C
/*
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SDL - Simple DihintsMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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/**
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* \file SDL_hints.h
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*
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* Official documentation for SDL configuration variables
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*
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* This file contains functions to set and get configuration hints,
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* as well as listing each of them alphabetically.
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*
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* The convention for naming hints is SDL_HINT_X, where "SDL_X" is
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* the environment variable that can be used to override the default.
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*
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* In general these hints are just that - they may or may not be
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* supported or applicable on any given platform, but they provide
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* a way for an application or user to give the library a hint as
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* to how they would like the library to work.
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*/
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#ifndef _SDL_hints_h
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#define _SDL_hints_h
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#include "SDL_stdinc.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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extern "C" {
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/* *INDENT-ON* */
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#endif
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/**
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* \brief A variable controlling how 3D acceleration is used to accelerate the SDL 1.2 screen surface.
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*
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* SDL can try to accelerate the SDL 1.2 screen surface by using streaming
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* textures with a 3D rendering engine. This variable controls whether and
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* how this is done.
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*
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* This variable can be set to the following values:
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* "0" - Disable 3D acceleration
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* "1" - Enable 3D acceleration, using the default renderer.
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* "X" - Enable 3D acceleration, using X where X is one of the valid rendering drivers. (e.g. "direct3d", "opengl", etc.)
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*
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* By default SDL tries to make a best guess for each platform whether
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* to use acceleration or not.
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*/
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#define SDL_HINT_FRAMEBUFFER_ACCELERATION "SDL_FRAMEBUFFER_ACCELERATION"
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/**
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* \brief A variable specifying which render driver to use.
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*
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* If the application doesn't pick a specific renderer to use, this variable
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* specifies the name of the preferred renderer. If the preferred renderer
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* can't be initialized, the normal default renderer is used.
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*
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* This variable is case insensitive and can be set to the following values:
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* "direct3d"
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* "opengl"
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* "opengles2"
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* "opengles"
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* "software"
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*
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* The default varies by platform, but it's the first one in the list that
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* is available on the current platform.
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*/
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#define SDL_HINT_RENDER_DRIVER "SDL_RENDER_DRIVER"
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/**
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* \brief A variable controlling whether the OpenGL render driver uses shaders if they are available.
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*
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* This variable can be set to the following values:
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* "0" - Disable shaders
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* "1" - Enable shaders
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*
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* By default shaders are used if OpenGL supports them.
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*/
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#define SDL_HINT_RENDER_OPENGL_SHADERS "SDL_RENDER_OPENGL_SHADERS"
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/**
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* \brief A variable controlling whether updates to the SDL 1.2 screen surface should be synchronized with the vertical refresh, to avoid tearing.
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*
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* This variable can be set to the following values:
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* "0" - Disable vsync
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* "1" - Enable vsync
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*
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* By default SDL does not sync screen surface updates with vertical refresh.
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*/
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#define SDL_HINT_RENDER_VSYNC "SDL_RENDER_VSYNC"
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/**
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* \brief An enumeration of hint priorities
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*/
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typedef enum
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{
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SDL_HINT_DEFAULT,
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SDL_HINT_NORMAL,
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SDL_HINT_OVERRIDE
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} SDL_HintPriority;
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/**
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* \brief Set a hint with a specific priority
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*
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* The priority controls the behavior when setting a hint that already
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* has a value. Hints will replace existing hints of their priority and
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* lower. Environment variables are considered to have override priority.
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*
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* \return SDL_TRUE if the hint was set, SDL_FALSE otherwise
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_SetHintWithPriority(const char *name,
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const char *value,
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SDL_HintPriority priority);
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/**
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* \brief Set a hint with normal priority
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*
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* \return SDL_TRUE if the hint was set, SDL_FALSE otherwise
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_SetHint(const char *name,
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const char *value);
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/**
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* \brief Get a hint
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*
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* \return The string value of a hint variable.
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*/
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extern DECLSPEC const char * SDLCALL SDL_GetHint(const char *name);
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/**
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* \brief Clear all hints
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*
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* This function is called during SDL_Quit() to free stored hints.
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*/
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extern DECLSPEC void SDLCALL SDL_ClearHints(void);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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}
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/* *INDENT-ON* */
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#endif
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#include "close_code.h"
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#endif /* _SDL_hints_h */
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/* vi: set ts=4 sw=4 expandtab: */
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