include/SDL_video.h
author Sam Lantinga <slouken@libsdl.org>
Sun, 06 Aug 2006 00:09:04 +0000
changeset 1969 5d3724f64f2b
parent 1968 9f589a1f74a5
child 1985 8055185ae4ed
permissions -rw-r--r--
Clarified the difference between render drivers and render contexts
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 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_video.h
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 *
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 * Header file for access to the SDL raw framebuffer window
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 */
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#ifndef _SDL_video_h
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#define _SDL_video_h
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#include "SDL_stdinc.h"
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#include "SDL_error.h"
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#include "SDL_pixels.h"
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#include "SDL_rwops.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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/* Transparency definitions: These define alpha as the opacity of a surface */
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#define SDL_ALPHA_OPAQUE 255
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#define SDL_ALPHA_TRANSPARENT 0
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/**
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 * \struct SDL_Rect
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 *
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 * \brief A rectangle, with the origin at the upper left.
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 */
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typedef struct SDL_Rect
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{
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    int x, y;
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    int w, h;
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} SDL_Rect;
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/**
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 * \struct SDL_DisplayMode
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 *
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 * \brief  The structure that defines a display mode
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 *
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 * \sa SDL_GetNumDisplayModes()
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 * \sa SDL_GetDisplayMode()
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 * \sa SDL_GetDesktopDisplayMode()
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 * \sa SDL_GetCurrentDisplayMode()
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 * \sa SDL_GetClosestDisplayMode()
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 * \sa SDL_SetDisplayMode()
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 */
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typedef struct
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{
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    Uint32 format;              /**< pixel format */
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    int w;                      /**< width */
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    int h;                      /**< height */
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    int refresh_rate;           /**< refresh rate (or zero for unspecified) */
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    void *driverdata;           /**< driver-specific data, initialize to 0 */
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} SDL_DisplayMode;
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/**
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 * \typedef SDL_WindowID
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 *
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 * \brief The type used to identify a window
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 *
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 * \sa SDL_CreateWindow()
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 * \sa SDL_CreateWindowFrom()
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 * \sa SDL_DestroyWindow()
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 * \sa SDL_GetWindowData()
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 * \sa SDL_GetWindowFlags()
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 * \sa SDL_GetWindowGrab()
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 * \sa SDL_GetWindowPosition()
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 * \sa SDL_GetWindowSize()
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 * \sa SDL_GetWindowTitle()
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 * \sa SDL_HideWindow()
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 * \sa SDL_MaximizeWindow()
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 * \sa SDL_MinimizeWindow()
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 * \sa SDL_RaiseWindow()
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 * \sa SDL_RestoreWindow()
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 * \sa SDL_SetWindowData()
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 * \sa SDL_SetWindowFullscreen()
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 * \sa SDL_SetWindowGrab()
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 * \sa SDL_SetWindowIcon()
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 * \sa SDL_SetWindowPosition()
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 * \sa SDL_SetWindowSize()
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 * \sa SDL_SetWindowTitle()
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 * \sa SDL_ShowWindow()
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 */
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typedef Uint32 SDL_WindowID;
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/**
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 * \enum SDL_WindowFlags
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 *
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 * \brief The flags on a window
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 *
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 * \sa SDL_GetWindowFlags()
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 */
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typedef enum
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{
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    SDL_WINDOW_FULLSCREEN = 0x00000001,         /**< fullscreen window, implies borderless */
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    SDL_WINDOW_OPENGL = 0x00000002,             /**< window usable with OpenGL context */
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    SDL_WINDOW_SHOWN = 0x00000004,              /**< window is visible */
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    SDL_WINDOW_BORDERLESS = 0x00000008,         /**< no window decoration */
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    SDL_WINDOW_RESIZABLE = 0x00000010,          /**< window can be resized */
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    SDL_WINDOW_MINIMIZED = 0x00000020,          /**< minimized */
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    SDL_WINDOW_MAXIMIZED = 0x00000040,          /**< maximized */
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    SDL_WINDOW_INPUT_GRABBED = 0x00000100,      /**< window has grabbed input focus */
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    SDL_WINDOW_INPUT_FOCUS = 0x00000200,        /**< window has input focus */
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    SDL_WINDOW_MOUSE_FOCUS = 0x00000400,        /**< window has mouse focus */
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} SDL_WindowFlags;
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/**
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 * \def SDL_WINDOWPOS_UNDEFINED
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 * \brief Used to indicate that you don't care what the window position is.
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 */
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#define SDL_WINDOWPOS_UNDEFINED 0x7FFFFFF
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/**
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 * \def SDL_WINDOWPOS_CENTERED
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 * \brief Used to indicate that the window position should be centered.
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 */
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#define SDL_WINDOWPOS_CENTERED  0x7FFFFFE
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/**
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 * \enum SDL_WindowEventID
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 *
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 * \brief Event subtype for window events
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 */
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typedef enum
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{
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    SDL_WINDOWEVENT_NONE,               /**< Never used */
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    SDL_WINDOWEVENT_SHOWN,              /**< Window has been shown */
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    SDL_WINDOWEVENT_HIDDEN,             /**< Window has been hidden */
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    SDL_WINDOWEVENT_EXPOSED,            /**< Window has been exposed and should be redrawn */
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    SDL_WINDOWEVENT_MOVED,              /**< Window has been moved to data1,data2 */
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    SDL_WINDOWEVENT_RESIZED,            /**< Window size changed to data1xdata2 */
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    SDL_WINDOWEVENT_MINIMIZED,          /**< Window has been minimized */
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    SDL_WINDOWEVENT_MAXIMIZED,          /**< Window has been maximized */
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    SDL_WINDOWEVENT_RESTORED,           /**< Window has been restored to normal size and position */
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    SDL_WINDOWEVENT_ENTER,              /**< The window has gained mouse focus */
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    SDL_WINDOWEVENT_LEAVE,              /**< The window has lost mouse focus */
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    SDL_WINDOWEVENT_FOCUS_GAINED,       /**< The window has gained keyboard focus */
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    SDL_WINDOWEVENT_FOCUS_LOST,         /**< The window has lost keyboard focus */
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    SDL_WINDOWEVENT_CLOSE,                              /**< The window manager requests that the window be closed */
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} SDL_WindowEventID;
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/**
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 * \enum SDL_RendererFlags
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 *
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 * \brief Flags used when creating a rendering context
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 */
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typedef enum
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{
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    SDL_RENDERER_SINGLEBUFFER = 0x00000001,     /**< Render directly to the window, if possible */
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    SDL_RENDERER_PRESENTCOPY = 0x00000002,      /**< Present uses a copy from back buffer to the front buffer */
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    SDL_RENDERER_PRESENTFLIP2 = 0x00000004,     /**< Present uses a flip, swapping back buffer and front buffer */
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    SDL_RENDERER_PRESENTFLIP3 = 0x00000008,     /**< Present uses a flip, rotating between two back buffers and a front buffer */
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    SDL_RENDERER_PRESENTDISCARD = 0x00000010,   /**< Present leaves the contents of the backbuffer undefined */
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    SDL_RENDERER_PRESENTVSYNC = 0x00000020,     /**< Present is synchronized with the refresh rate */
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    SDL_RENDERER_ACCELERATED = 0x00000040,      /**< The renderer uses hardware acceleration */
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} SDL_RendererFlags;
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/**
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 * \struct SDL_RendererInfo
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 *
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 * \brief Information on the capabilities of a render driver or context
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 */
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typedef struct SDL_RendererInfo
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{
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    const char *name;           /**< The name of the renderer */
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    Uint32 flags;               /**< Supported SDL_RendererFlags */
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    Uint32 blend_modes;         /**< A mask of supported blend modes */
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    Uint32 scale_modes;         /**< A mask of supported scale modes */
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    Uint32 num_texture_formats; /**< The number of available texture formats */
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    Uint32 texture_formats[20]; /**< The available texture formats */
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    int max_texture_width;      /**< The maximimum texture width */
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    int max_texture_height;     /**< The maximimum texture height */
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} SDL_RendererInfo;
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/**
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 * \enum SDL_TextureAccess
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 *
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 * \brief The access pattern allowed for a texture
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 */
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typedef enum
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{
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    SDL_TEXTUREACCESS_LOCAL,    /**< Lockable system memory */
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    SDL_TEXTUREACCESS_REMOTE,   /**< Unlockable video memory */
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} SDL_TextureAccess;
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/**
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 * \enum SDL_TextureBlendMode
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 *
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 * \brief The blend mode used in SDL_RenderCopy()
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 */
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typedef enum
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{
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    SDL_TEXTUREBLENDMODE_NONE = 0x00000000,     /**< No blending */
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    SDL_TEXTUREBLENDMODE_MASK = 0x00000001,     /**< dst = A ? src : dst (alpha is mask) */
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    SDL_TEXTUREBLENDMODE_BLEND = 0x00000002,    /**< dst = (src * A) + (dst * (1-A)) */
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    SDL_TEXTUREBLENDMODE_ADD = 0x00000004,      /**< dst = (src * A) + dst */
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    SDL_TEXTUREBLENDMODE_MOD = 0x00000008,      /**< dst = src * dst */
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} SDL_TextureBlendMode;
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/**
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 * \enum SDL_TextureScaleMode
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 *
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 * \brief The scale mode used in SDL_RenderCopy()
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 */
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typedef enum
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{
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    SDL_TEXTURESCALEMODE_NONE = 0x00000000,     /**< No scaling, rectangles must match dimensions */
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    SDL_TEXTURESCALEMODE_FAST = 0x00000001,     /**< Point sampling or equivalent algorithm */
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    SDL_TEXTURESCALEMODE_SLOW = 0x00000002,     /**< Linear filtering or equivalent algorithm */
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    SDL_TEXTURESCALEMODE_BEST = 0x00000004,     /**< Bicubic filtering or equivalent algorithm */
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} SDL_TextureScaleMode;
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/**
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 * \typedef SDL_TextureID
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 *
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 * \brief An efficient driver-specific representation of pixel data
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 */
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typedef Uint32 SDL_TextureID;
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/**
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 * \typedef SDL_GLContext
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 *
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 * \brief An opaque handle to an OpenGL context.
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 */
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typedef void *SDL_GLContext;
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/* These are the currently supported flags for the SDL_surface */
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/* Used internally (read-only) */
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#define SDL_HWSURFACE       0x00000001  /* Surface represents a texture */
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#define SDL_PREALLOC        0x00000002  /* Surface uses preallocated memory */
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#define SDL_SRCALPHA        0x00000004  /* Blit uses source alpha blending */
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#define SDL_SRCCOLORKEY     0x00000008  /* Blit uses a source color key */
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#define SDL_RLEACCELOK      0x00000010  /* Private flag */
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#define SDL_RLEACCEL        0x00000020  /* Surface is RLE encoded */
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/* Evaluates to true if the surface needs to be locked before access */
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#define SDL_MUSTLOCK(S)	(((S)->flags & (SDL_HWSURFACE|SDL_RLEACCEL)) != 0)
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/* This structure should be treated as read-only, except for 'pixels',
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   which, if not NULL, contains the raw pixel data for the surface.
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*/
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typedef struct SDL_Surface
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{
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    Uint32 flags;               /* Read-only */
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    SDL_PixelFormat *format;    /* Read-only */
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    int w, h;                   /* Read-only */
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    int pitch;                  /* Read-only */
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    void *pixels;               /* Read-write */
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    /* texture associated with the surface, if any */
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    SDL_TextureID textureID;
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    /* information needed for surfaces requiring locks */
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    int locked;
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    void *lock_data;
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    /* clipping information */
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    SDL_Rect clip_rect;         /* Read-only */
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    /* info for fast blit mapping to other surfaces */
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    struct SDL_BlitMap *map;    /* Private */
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    /* format version, bumped at every change to invalidate blit maps */
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    unsigned int format_version;        /* Private */
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    /* Reference count -- used when freeing surface */
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    int refcount;               /* Read-mostly */
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} SDL_Surface;
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/* typedef for private surface blitting functions */
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typedef int (*SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
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                         struct SDL_Surface * dst, SDL_Rect * dstrect);
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/**
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 * \enum SDL_GLattr
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 *
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 * \brief OpenGL configuration attributes
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 */
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typedef enum
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{
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    SDL_GL_RED_SIZE,
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    SDL_GL_GREEN_SIZE,
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    SDL_GL_BLUE_SIZE,
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    SDL_GL_ALPHA_SIZE,
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    SDL_GL_BUFFER_SIZE,
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    SDL_GL_DOUBLEBUFFER,
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    SDL_GL_DEPTH_SIZE,
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    SDL_GL_STENCIL_SIZE,
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    SDL_GL_ACCUM_RED_SIZE,
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    SDL_GL_ACCUM_GREEN_SIZE,
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    SDL_GL_ACCUM_BLUE_SIZE,
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    SDL_GL_ACCUM_ALPHA_SIZE,
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    SDL_GL_STEREO,
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    SDL_GL_MULTISAMPLEBUFFERS,
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    SDL_GL_MULTISAMPLESAMPLES,
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    SDL_GL_ACCELERATED_VISUAL
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} SDL_GLattr;
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/* Function prototypes */
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/**
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 * \fn int SDL_GetNumVideoDrivers(void)
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 *
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 * \brief Get the number of video drivers compiled into SDL
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 *
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 * \sa SDL_GetVideoDriver()
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 */
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extern DECLSPEC int SDLCALL SDL_GetNumVideoDrivers(void);
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/**
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 * \fn const char *SDL_GetVideoDriver(int index)
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 *
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 * \brief Get the name of a built in video driver.
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 *
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 * \note The video drivers are presented in the order in which they are
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 * normally checked during initialization.
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 *
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 * \sa SDL_GetNumVideoDrivers()
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 */
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extern DECLSPEC const char *SDLCALL SDL_GetVideoDriver(int index);
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/**
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 * \fn int SDL_VideoInit(const char *driver_name, Uint32 flags)
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 *
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 * \brief Initialize the video subsystem, optionally specifying a video driver.
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 *
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 * \param driver_name Initialize a specific driver by name, or NULL for the default video driver.
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 * \param flags FIXME: Still needed?
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 *
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 * \return 0 on success, -1 on error
slouken@1895
   358
 *
slouken@1895
   359
 * This function initializes the video subsystem; setting up a connection
slouken@1895
   360
 * to the window manager, etc, and determines the available display modes
slouken@1895
   361
 * and pixel formats, but does not initialize a window or graphics mode.
slouken@1895
   362
 *
slouken@1895
   363
 * \sa SDL_VideoQuit()
slouken@1895
   364
 */
slouken@1895
   365
extern DECLSPEC int SDLCALL SDL_VideoInit(const char *driver_name,
slouken@1895
   366
                                          Uint32 flags);
slouken@1895
   367
slouken@1895
   368
/**
slouken@1895
   369
 * \fn void SDL_VideoQuit(void)
slouken@1895
   370
 *
slouken@1895
   371
 * \brief Shuts down the video subsystem.
slouken@1895
   372
 *
slouken@1895
   373
 * This function closes all windows, and restores the original video mode.
slouken@1895
   374
 *
slouken@1895
   375
 * \sa SDL_VideoInit()
slouken@1895
   376
 */
slouken@337
   377
extern DECLSPEC void SDLCALL SDL_VideoQuit(void);
slouken@0
   378
slouken@1895
   379
/**
slouken@1895
   380
 * \fn const char *SDL_GetCurrentVideoDriver(void)
slouken@1895
   381
 *
slouken@1895
   382
 * \brief Returns the name of the currently initialized video driver.
slouken@1895
   383
 *
slouken@1895
   384
 * \return The name of the current video driver or NULL if no driver
slouken@1895
   385
 *         has been initialized
slouken@1895
   386
 *
slouken@1895
   387
 * \sa SDL_GetNumVideoDrivers()
slouken@1895
   388
 * \sa SDL_GetVideoDriver()
slouken@0
   389
 */
slouken@1895
   390
extern DECLSPEC const char *SDLCALL SDL_GetCurrentVideoDriver(void);
slouken@0
   391
slouken@1895
   392
/**
slouken@1895
   393
 * \fn int SDL_GetNumVideoDisplays(void)
slouken@1895
   394
 *
slouken@1895
   395
 * \brief Returns the number of available video displays.
slouken@1895
   396
 *
slouken@1895
   397
 * \sa SDL_SelectVideoDisplay()
slouken@0
   398
 */
slouken@1895
   399
extern DECLSPEC int SDLCALL SDL_GetNumVideoDisplays(void);
slouken@0
   400
slouken@1895
   401
/**
slouken@1895
   402
 * \fn int SDL_SelectVideoDisplay(int index)
slouken@1895
   403
 *
slouken@1895
   404
 * \brief Set the index of the currently selected display.
slouken@1895
   405
 *
slouken@1963
   406
 * \return 0 on success, or -1 if the index is out of range.
slouken@1963
   407
 *
slouken@1963
   408
 * \sa SDL_GetNumVideoDisplays()
slouken@1963
   409
 * \sa SDL_GetCurrentVideoDisplay()
slouken@1963
   410
 */
slouken@1963
   411
extern DECLSPEC int SDLCALL SDL_SelectVideoDisplay(int index);
slouken@1963
   412
slouken@1963
   413
/**
slouken@1963
   414
 * \fn int SDL_GetCurrentVideoDisplay(void)
slouken@1963
   415
 *
slouken@1963
   416
 * \brief Get the index of the currently selected display.
slouken@1963
   417
 *
slouken@1895
   418
 * \return The index of the currently selected display.
slouken@1895
   419
 *
slouken@1895
   420
 * \sa SDL_GetNumVideoDisplays()
slouken@1963
   421
 * \sa SDL_SelectVideoDisplay()
slouken@0
   422
 */
slouken@1963
   423
extern DECLSPEC int SDLCALL SDL_GetCurrentVideoDisplay(void);
slouken@0
   424
slouken@1895
   425
/**
slouken@1895
   426
 * \fn int SDL_GetNumDisplayModes(void)
slouken@0
   427
 *
slouken@1895
   428
 * \brief Returns the number of available display modes for the current display.
slouken@1895
   429
 *
slouken@1895
   430
 * \sa SDL_GetDisplayMode()
slouken@0
   431
 */
slouken@1895
   432
extern DECLSPEC int SDLCALL SDL_GetNumDisplayModes(void);
slouken@0
   433
slouken@1895
   434
/**
slouken@1967
   435
 * \fn int SDL_GetDisplayMode(int index, SDL_DisplayMode *mode)
slouken@0
   436
 *
slouken@1968
   437
 * \brief Fill in information about a specific display mode.
slouken@1895
   438
 *
slouken@1895
   439
 * \note The display modes are sorted in this priority:
slouken@1895
   440
 *       \li bits per pixel -> more colors to fewer colors
slouken@1895
   441
 *       \li width -> largest to smallest
slouken@1895
   442
 *       \li height -> largest to smallest
slouken@1895
   443
 *       \li refresh rate -> highest to lowest
slouken@1895
   444
 *
slouken@1895
   445
 * \sa SDL_GetNumDisplayModes()
slouken@0
   446
 */
slouken@1967
   447
extern DECLSPEC int SDLCALL SDL_GetDisplayMode(int index,
slouken@1967
   448
                                               SDL_DisplayMode * mode);
slouken@0
   449
slouken@1895
   450
/**
slouken@1967
   451
 * \fn int SDL_GetDesktopDisplayMode(SDL_DisplayMode *mode)
slouken@0
   452
 *
slouken@1968
   453
 * \brief Fill in information about the desktop display mode for the current display.
slouken@1895
   454
 */
slouken@1967
   455
extern DECLSPEC int SDLCALL SDL_GetDesktopDisplayMode(SDL_DisplayMode * mode);
slouken@1895
   456
slouken@1895
   457
/**
slouken@1967
   458
 * \fn int SDL_GetCurrentDisplayMode(SDL_DisplayMode *mode)
slouken@0
   459
 *
slouken@1968
   460
 * \brief Fill in information about the current display mode.
slouken@1895
   461
 */
slouken@1967
   462
extern DECLSPEC int SDLCALL SDL_GetCurrentDisplayMode(SDL_DisplayMode * mode);
slouken@1895
   463
slouken@1895
   464
/**
slouken@1895
   465
 * \fn SDL_DisplayMode *SDL_GetClosestDisplayMode(const SDL_DisplayMode *mode, SDL_DisplayMode *closest)
slouken@0
   466
 *
slouken@1895
   467
 * \brief Get the closest match to the requested display mode.
slouken@0
   468
 *
slouken@1895
   469
 * \param mode The desired display mode
slouken@1895
   470
 * \param closest A pointer to a display mode to be filled in with the closest match of the available display modes.
slouken@0
   471
 *
slouken@1895
   472
 * \return The passed in value 'closest', or NULL if no matching video mode was available.
slouken@0
   473
 *
slouken@1895
   474
 * The available display modes are scanned, and 'closest' is filled in with the closest mode matching the requested mode and returned.  The mode format and refresh_rate default to the desktop mode if they are 0.  The modes are scanned with size being first priority, format being second priority, and finally checking the refresh_rate.  If all the available modes are too small, then NULL is returned.
slouken@0
   475
 *
slouken@1895
   476
 * \sa SDL_GetNumDisplayModes()
slouken@1895
   477
 * \sa SDL_GetDisplayMode()
slouken@1895
   478
 */
slouken@1895
   479
extern DECLSPEC SDL_DisplayMode *SDLCALL SDL_GetClosestDisplayMode(const
slouken@1895
   480
                                                                   SDL_DisplayMode
slouken@1895
   481
                                                                   * mode,
slouken@1895
   482
                                                                   SDL_DisplayMode
slouken@1895
   483
                                                                   * closest);
slouken@1895
   484
slouken@1895
   485
/**
slouken@1895
   486
 * \fn int SDL_SetFullscreenDisplayMode(const SDL_DisplayMode *mode)
slouken@0
   487
 *
slouken@1895
   488
 * \brief Set the display mode used when a fullscreen window is visible
slouken@1895
   489
 *        on the currently selected display.
slouken@0
   490
 *
slouken@1895
   491
 * \param mode The mode to use, or NULL for the desktop mode.
slouken@0
   492
 *
slouken@1895
   493
 * \return 0 on success, or -1 if setting the display mode failed.
slouken@0
   494
 *
slouken@1895
   495
 * \sa SDL_SetWindowFullscreen()
slouken@0
   496
 */
slouken@1895
   497
extern DECLSPEC int SDLCALL SDL_SetFullscreenDisplayMode(const SDL_DisplayMode
slouken@1895
   498
                                                         * mode);
slouken@0
   499
slouken@1895
   500
/**
slouken@1967
   501
 * \fn int SDL_GetFullscreenDisplayMode(SDL_DisplayMode *mode)
slouken@1895
   502
 *
slouken@1968
   503
 * \brief Fill in information about the display mode used when a fullscreen
slouken@1968
   504
 *        window is visible on the currently selected display.
slouken@0
   505
 */
slouken@1967
   506
extern DECLSPEC int SDLCALL SDL_GetFullscreenDisplayMode(SDL_DisplayMode *
slouken@1967
   507
                                                         mode);
slouken@0
   508
slouken@1895
   509
/**
slouken@1895
   510
 * \fn int SDL_SetDisplayPalette(const SDL_Color *colors, int firstcolor, int ncolors)
slouken@1895
   511
 *
slouken@1895
   512
 * \brief Set the palette entries for indexed display modes.
slouken@1895
   513
 *
slouken@1895
   514
 * \return 0 on success, or -1 if the display mode isn't palettized or the colors couldn't be set.
slouken@0
   515
 */
slouken@1895
   516
extern DECLSPEC int SDLCALL SDL_SetDisplayPalette(const SDL_Color * colors,
slouken@1895
   517
                                                  int firstcolor,
slouken@1895
   518
                                                  int ncolors);
slouken@0
   519
slouken@1895
   520
/**
slouken@1895
   521
 * \fn int SDL_GetDisplayPalette(SDL_Color *colors, int firstcolor, int ncolors)
slouken@1895
   522
 *
slouken@1895
   523
 * \brief Gets the palette entries for indexed display modes.
slouken@1895
   524
 *
slouken@1895
   525
 * \return 0 on success, or -1 if the display mode isn't palettized
slouken@1895
   526
 */
slouken@1895
   527
extern DECLSPEC int SDLCALL SDL_GetDisplayPalette(SDL_Color * colors,
slouken@1895
   528
                                                  int firstcolor,
slouken@1895
   529
                                                  int ncolors);
slouken@1895
   530
slouken@1895
   531
/**
slouken@1895
   532
 * \fn int SDL_SetGamma(float red, float green, float blue)
slouken@1895
   533
 *
slouken@1895
   534
 * \brief Set the gamma correction for each of the color channels on the currently selected display.
slouken@1895
   535
 *
slouken@1895
   536
 * \return 0 on success, or -1 if setting the gamma isn't supported.
slouken@1895
   537
 *
slouken@1895
   538
 * \sa SDL_SetGammaRamp()
slouken@0
   539
 */
slouken@337
   540
extern DECLSPEC int SDLCALL SDL_SetGamma(float red, float green, float blue);
slouken@0
   541
slouken@1895
   542
/**
slouken@1895
   543
 * \fn int SDL_SetGammaRamp(const Uint16 * red, const Uint16 * green, const Uint16 * blue)
slouken@1895
   544
 *
slouken@1895
   545
 * \brief Set the gamma ramp for the currently selected display.
slouken@1895
   546
 *
slouken@1895
   547
 * \param red The translation table for the red channel, or NULL
slouken@1895
   548
 * \param green The translation table for the green channel, or NULL
slouken@1895
   549
 * \param blue The translation table for the blue channel, or NULL
slouken@1895
   550
 *
slouken@1895
   551
 * \return 0 on success, or -1 if gamma ramps are unsupported.
slouken@1895
   552
 *
slouken@0
   553
 * Set the gamma translation table for the red, green, and blue channels
slouken@0
   554
 * of the video hardware.  Each table is an array of 256 16-bit quantities,
slouken@0
   555
 * representing a mapping between the input and output for that channel.
slouken@0
   556
 * The input is the index into the array, and the output is the 16-bit
slouken@0
   557
 * gamma value at that index, scaled to the output color precision.
slouken@0
   558
 * 
slouken@1895
   559
 * \sa SDL_GetGammaRamp()
slouken@0
   560
 */
slouken@1895
   561
extern DECLSPEC int SDLCALL SDL_SetGammaRamp(const Uint16 * red,
slouken@1895
   562
                                             const Uint16 * green,
slouken@1895
   563
                                             const Uint16 * blue);
slouken@0
   564
slouken@1895
   565
/**
slouken@1895
   566
 * \fn int SDL_GetGammaRamp(Uint16 * red, Uint16 * green, Uint16 * blue)
slouken@1895
   567
 *
slouken@1895
   568
 * \brief Get the gamma ramp for the currently selected display.
slouken@1895
   569
 *
slouken@1895
   570
 * \param red A pointer to a 256 element array of 16-bit quantities to hold the translation table for the red channel, or NULL.
slouken@1895
   571
 * \param green A pointer to a 256 element array of 16-bit quantities to hold the translation table for the green channel, or NULL.
slouken@1895
   572
 * \param blue A pointer to a 256 element array of 16-bit quantities to hold the translation table for the blue channel, or NULL.
slouken@0
   573
 * 
slouken@1895
   574
 * \return 0 on success, or -1 if gamma ramps are unsupported.
slouken@1895
   575
 *
slouken@1895
   576
 * \sa SDL_SetGammaRamp()
slouken@0
   577
 */
slouken@1895
   578
extern DECLSPEC int SDLCALL SDL_GetGammaRamp(Uint16 * red, Uint16 * green,
slouken@1895
   579
                                             Uint16 * blue);
slouken@0
   580
slouken@1895
   581
slouken@1895
   582
/**
slouken@1895
   583
 * \fn SDL_WindowID SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
slouken@0
   584
 *
slouken@1895
   585
 * \brief Create a window with the specified position, dimensions, and flags.
slouken@1895
   586
 *
slouken@1956
   587
 * \param title The title of the window, in UTF-8 encoding
slouken@1956
   588
 * \param x The x position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
slouken@1956
   589
 * \param y The y position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
slouken@1895
   590
 * \param w The width of the window
slouken@1895
   591
 * \param h The height of the window
slouken@1895
   592
 * \param flags The flags for the window, a mask of any of the following: SDL_WINDOW_FULLSCREEN, SDL_WINDOW_OPENGL, SDL_WINDOW_SHOWN, SDL_WINDOW_BORDERLESS, SDL_WINDOW_RESIZABLE, SDL_WINDOW_MAXIMIZED, SDL_WINDOW_MINIMIZED, SDL_WINDOW_INPUT_GRABBED
slouken@1895
   593
 *
slouken@1895
   594
 * \return The id of the window created, or zero if window creation failed.
slouken@1895
   595
 *
slouken@1895
   596
 * \sa SDL_DestroyWindow()
slouken@0
   597
 */
slouken@1895
   598
extern DECLSPEC SDL_WindowID SDLCALL SDL_CreateWindow(const char *title,
slouken@1895
   599
                                                      int x, int y, int w,
slouken@1895
   600
                                                      int h, Uint32 flags);
slouken@0
   601
slouken@1895
   602
/**
slouken@1895
   603
 * \fn SDL_WindowID SDL_CreateWindowFrom(void *data)
slouken@0
   604
 *
slouken@1895
   605
 * \brief Create an SDL window struct from an existing native window.
slouken@0
   606
 *
slouken@1895
   607
 * \param data A pointer to driver-dependent window creation data
slouken@1895
   608
 *
slouken@1895
   609
 * \return The id of the window created, or zero if window creation failed.
slouken@1895
   610
 *
slouken@1895
   611
 * \warning This function is NOT SUPPORTED, use at your own risk!
slouken@1895
   612
 *
slouken@1895
   613
 * \sa SDL_DestroyWindow()
slouken@0
   614
 */
slouken@1895
   615
extern DECLSPEC SDL_WindowID SDLCALL SDL_CreateWindowFrom(const void *data);
slouken@1895
   616
slouken@1895
   617
/**
slouken@1895
   618
 * \fn Uint32 SDL_GetWindowFlags(SDL_WindowID windowID)
slouken@1895
   619
 *
slouken@1895
   620
 * \brief Get the window flags.
slouken@1895
   621
 */
slouken@1895
   622
extern DECLSPEC Uint32 SDLCALL SDL_GetWindowFlags(SDL_WindowID windowID);
slouken@1895
   623
slouken@1895
   624
/**
slouken@1895
   625
 * \fn void SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)
slouken@1895
   626
 *
slouken@1895
   627
 * \brief Set the title of the window, in UTF-8 format.
slouken@1895
   628
 *
slouken@1895
   629
 * \sa SDL_GetWindowTitle()
slouken@1895
   630
 */
slouken@1895
   631
extern DECLSPEC void SDLCALL SDL_SetWindowTitle(SDL_WindowID windowID,
slouken@1895
   632
                                                const char *title);
slouken@1895
   633
slouken@1895
   634
/**
slouken@1895
   635
 * \fn const char *SDL_GetWindowTitle(SDL_WindowID windowID)
slouken@1895
   636
 *
slouken@1895
   637
 * \brief Get the title of the window, in UTF-8 format.
slouken@1895
   638
 *
slouken@1895
   639
 * \sa SDL_SetWindowTitle()
slouken@1895
   640
 */
slouken@1895
   641
extern DECLSPEC const char *SDLCALL SDL_GetWindowTitle(SDL_WindowID windowID);
slouken@1895
   642
slouken@1895
   643
/**
slouken@1895
   644
 * \fn void SDL_SetWindowIcon(SDL_Surface *icon)
slouken@1895
   645
 *
slouken@1895
   646
 * \brief Set the icon of the window.
slouken@1895
   647
 *
slouken@1895
   648
 * \param icon The icon for the window
slouken@1895
   649
 *
slouken@1895
   650
 * FIXME: The icon needs to be set before the window is first shown.  Should some icon representation be part of the window creation data?
slouken@1895
   651
 */
slouken@1895
   652
extern DECLSPEC void SDLCALL SDL_SetWindowIcon(SDL_Surface * icon);
slouken@1895
   653
slouken@1895
   654
/**
slouken@1895
   655
 * \fn void SDL_SetWindowData(SDL_WindowID windowID, void *userdata)
slouken@1895
   656
 *
slouken@1895
   657
 * \brief Associate an arbitrary pointer with the window.
slouken@1895
   658
 *
slouken@1895
   659
 * \sa SDL_GetWindowData()
slouken@1895
   660
 */
slouken@1895
   661
extern DECLSPEC void SDLCALL SDL_SetWindowData(SDL_WindowID windowID,
slouken@1895
   662
                                               void *userdata);
slouken@1895
   663
slouken@1895
   664
/**
slouken@1895
   665
 * \fn void *SDL_GetWindowData(SDL_WindowID windowID)
slouken@1895
   666
 *
slouken@1895
   667
 * \brief Retrieve the data pointer associated with the window.
slouken@1895
   668
 *
slouken@1895
   669
 * \sa SDL_SetWindowData()
slouken@1895
   670
 */
slouken@1895
   671
extern DECLSPEC void *SDLCALL SDL_GetWindowData(SDL_WindowID windowID);
slouken@1895
   672
slouken@1895
   673
/**
slouken@1895
   674
 * \fn void SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)
slouken@1895
   675
 *
slouken@1895
   676
 * \brief Set the position of the window.
slouken@1895
   677
 *
slouken@1895
   678
 * \param windowID The window to reposition
slouken@1895
   679
 * \param x The x coordinate of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
slouken@1895
   680
 * \param y The y coordinate of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
slouken@1895
   681
 *
slouken@1895
   682
 * \note The window coordinate origin is the upper left of the display.
slouken@1895
   683
 *
slouken@1895
   684
 * \sa SDL_GetWindowPosition()
slouken@1895
   685
 */
slouken@1895
   686
extern DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_WindowID windowID,
slouken@1895
   687
                                                   int x, int y);
slouken@1895
   688
slouken@1895
   689
/**
slouken@1895
   690
 * \fn void SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)
slouken@1895
   691
 *
slouken@1895
   692
 * \brief Get the position of the window.
slouken@1895
   693
 *
slouken@1895
   694
 * \sa SDL_SetWindowPosition()
slouken@1895
   695
 */
slouken@1895
   696
extern DECLSPEC void SDLCALL SDL_GetWindowPosition(SDL_WindowID windowID,
slouken@1895
   697
                                                   int *x, int *y);
slouken@1895
   698
slouken@1895
   699
/**
slouken@1895
   700
 * \fn void SDL_SetWindowSize(SDL_WindowID windowID, int w, int w)
slouken@1895
   701
 *
slouken@1895
   702
 * \brief Set the size of the window's client area.
slouken@1895
   703
 *
slouken@1895
   704
 * \note You can't change the size of a fullscreen window, it automatically
slouken@1895
   705
 * matches the size of the display mode.
slouken@1895
   706
 *
slouken@1895
   707
 * \sa SDL_GetWindowSize()
slouken@1895
   708
 */
slouken@1895
   709
extern DECLSPEC void SDLCALL SDL_SetWindowSize(SDL_WindowID windowID, int w,
slouken@1895
   710
                                               int h);
slouken@1895
   711
slouken@1895
   712
/**
slouken@1895
   713
 * \fn void SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *w)
slouken@1895
   714
 *
slouken@1895
   715
 * \brief Get the size of the window's client area.
slouken@1895
   716
 *
slouken@1895
   717
 * \sa SDL_SetWindowSize()
slouken@1895
   718
 */
slouken@1895
   719
extern DECLSPEC void SDLCALL SDL_GetWindowSize(SDL_WindowID windowID, int *w,
slouken@1895
   720
                                               int *h);
slouken@1895
   721
slouken@1895
   722
/**
slouken@1895
   723
 * \fn void SDL_ShowWindow(SDL_WindowID windowID)
slouken@1895
   724
 *
slouken@1895
   725
 * \brief Show the window
slouken@1895
   726
 *
slouken@1895
   727
 * \sa SDL_HideWindow()
slouken@1895
   728
 */
slouken@1895
   729
extern DECLSPEC void SDLCALL SDL_ShowWindow(SDL_WindowID windowID);
slouken@1895
   730
slouken@1895
   731
/**
slouken@1895
   732
 * \fn void SDL_HideWindow(SDL_WindowID windowID)
slouken@1895
   733
 *
slouken@1895
   734
 * \brief Hide the window
slouken@1895
   735
 *
slouken@1895
   736
 * \sa SDL_ShowWindow()
slouken@1895
   737
 */
slouken@1895
   738
extern DECLSPEC void SDLCALL SDL_HideWindow(SDL_WindowID windowID);
slouken@1895
   739
slouken@1895
   740
/**
slouken@1895
   741
 * \fn void SDL_RaiseWindow(SDL_WindowID windowID)
slouken@1895
   742
 *
slouken@1895
   743
 * \brief Raise the window above other windows and set the input focus.
slouken@1895
   744
 */
slouken@1895
   745
extern DECLSPEC void SDLCALL SDL_RaiseWindow(SDL_WindowID windowID);
slouken@1895
   746
slouken@1895
   747
/**
slouken@1895
   748
 * \fn void SDL_MaximizeWindow(SDL_WindowID windowID)
slouken@1895
   749
 *
slouken@1895
   750
 * \brief Make the window as large as possible.
slouken@1895
   751
 *
slouken@1895
   752
 * \sa SDL_RestoreWindow()
slouken@1895
   753
 */
slouken@1895
   754
extern DECLSPEC void SDLCALL SDL_MaximizeWindow(SDL_WindowID windowID);
slouken@1895
   755
slouken@1895
   756
/**
slouken@1895
   757
 * \fn void SDL_MinimizeWindow(SDL_WindowID windowID)
slouken@1895
   758
 *
slouken@1895
   759
 * \brief Minimize the window to an iconic representation.
slouken@1895
   760
 *
slouken@1895
   761
 * \sa SDL_RestoreWindow()
slouken@1895
   762
 */
slouken@1895
   763
extern DECLSPEC void SDLCALL SDL_MinimizeWindow(SDL_WindowID windowID);
slouken@1895
   764
slouken@1895
   765
/**
slouken@1895
   766
 * \fn void SDL_RestoreWindow(SDL_WindowID windowID)
slouken@1895
   767
 *
slouken@1895
   768
 * \brief Restore the size and position of a minimized or maximized window.
slouken@1895
   769
 *
slouken@1895
   770
 * \sa SDL_MaximizeWindow()
slouken@1895
   771
 * \sa SDL_MinimizeWindow()
slouken@1895
   772
 */
slouken@1895
   773
extern DECLSPEC void SDLCALL SDL_RestoreWindow(SDL_WindowID windowID);
slouken@1895
   774
slouken@1895
   775
/**
slouken@1895
   776
 * \fn int SDL_SetWindowFullscreen(SDL_WindowID windowID, int fullscreen)
slouken@1895
   777
 *
slouken@1895
   778
 * \brief Set the window's fullscreen state.
slouken@1895
   779
 *
slouken@1895
   780
 * \return 0 on success, or -1 if setting the display mode failed.
slouken@1895
   781
 *
slouken@1895
   782
 * \sa SDL_SetFullscreenDisplayMode()
slouken@1895
   783
 */
slouken@1895
   784
extern DECLSPEC int SDLCALL SDL_SetWindowFullscreen(SDL_WindowID windowID,
slouken@1895
   785
                                                    int fullscreen);
slouken@1895
   786
slouken@1895
   787
/**
slouken@1895
   788
 * \fn void SDL_SetWindowGrab(SDL_WindowID windowID, int mode)
slouken@1895
   789
 *
slouken@1895
   790
 * \brief Set the window's input grab mode.
slouken@1895
   791
 *
slouken@1895
   792
 * \param mode This is 1 to grab input, and 0 to release input.
slouken@1895
   793
 *
slouken@1895
   794
 * \sa SDL_GetWindowGrab()
slouken@1895
   795
 */
slouken@1895
   796
extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_WindowID windowID,
slouken@1895
   797
                                               int mode);
slouken@1895
   798
slouken@1895
   799
/**
slouken@1895
   800
 * \fn int SDL_GetWindowGrab(SDL_WindowID windowID)
slouken@1895
   801
 *
slouken@1895
   802
 * \brief Get the window's input grab mode.
slouken@1895
   803
 *
slouken@1895
   804
 * \return This returns 1 if input is grabbed, and 0 otherwise.
slouken@1895
   805
 *
slouken@1895
   806
 * \sa SDL_SetWindowGrab()
slouken@1895
   807
 */
slouken@1895
   808
extern DECLSPEC int SDLCALL SDL_GetWindowGrab(SDL_WindowID windowID);
slouken@1895
   809
slouken@1895
   810
/**
slouken@1895
   811
 * \fn SDL_bool SDL_GetWindowWMInfo(SDL_WindowID windowID, struct SDL_SysWMinfo * info)
slouken@1895
   812
 *
slouken@1895
   813
 * \brief Get driver specific information about a window.
slouken@1895
   814
 *
slouken@1895
   815
 * \note Include SDL_syswm.h for the declaration of SDL_SysWMinfo.
slouken@1895
   816
 */
slouken@1895
   817
struct SDL_SysWMinfo;
slouken@1895
   818
extern DECLSPEC SDL_bool SDLCALL SDL_GetWindowWMInfo(SDL_WindowID windowID,
slouken@1895
   819
                                                     struct SDL_SysWMinfo
slouken@1895
   820
                                                     *info);
slouken@1895
   821
slouken@1895
   822
/**
slouken@1895
   823
 * \fn void SDL_DestroyWindow(SDL_WindowID windowID)
slouken@1895
   824
 *
slouken@1895
   825
 * \brief Destroy a window.
slouken@1895
   826
 */
slouken@1895
   827
extern DECLSPEC void SDLCALL SDL_DestroyWindow(SDL_WindowID windowID);
slouken@1895
   828
slouken@1895
   829
/**
slouken@1969
   830
 * \fn int SDL_GetNumRenderDrivers(void)
slouken@1895
   831
 *
slouken@1969
   832
 * \brief Get the number of 2D rendering drivers available for the current display.
slouken@1895
   833
 *
slouken@1969
   834
 * A render driver is a set of code that handles rendering and texture
slouken@1895
   835
 * management on a particular display.  Normally there is only one, but
slouken@1895
   836
 * some drivers may have several available with different capabilities.
slouken@1895
   837
 *
slouken@1969
   838
 * \sa SDL_GetRenderDriverInfo()
slouken@1895
   839
 * \sa SDL_CreateRenderer()
slouken@1895
   840
 */
slouken@1969
   841
extern DECLSPEC int SDLCALL SDL_GetNumRenderDrivers(void);
slouken@1895
   842
slouken@1895
   843
/**
slouken@1969
   844
 * \fn int SDL_GetRenderDriverInfo(int index, SDL_RendererInfo *info)
slouken@1895
   845
 *
slouken@1969
   846
 * \brief Get information about a specific 2D rendering driver for the current display.
slouken@1895
   847
 *
slouken@1969
   848
 * \param index The index of the driver to query information about.
slouken@1969
   849
 * \param info A pointer to an SDL_RendererInfo struct to be filled with information on the rendering driver.
slouken@1907
   850
 *
slouken@1907
   851
 * \return 0 on success, -1 if the index was out of range
slouken@1907
   852
 *
slouken@1895
   853
 * \sa SDL_CreateRenderer()
slouken@1895
   854
 */
slouken@1969
   855
extern DECLSPEC int SDLCALL SDL_GetRenderDriverInfo(int index,
slouken@1969
   856
                                                    SDL_RendererInfo * info);
slouken@1895
   857
slouken@1895
   858
/**
slouken@1895
   859
 * \fn int SDL_CreateRenderer(SDL_WindowID window, int index, Uint32 flags)
slouken@1895
   860
 *
slouken@1895
   861
 * \brief Create and make active a 2D rendering context for a window.
slouken@1895
   862
 *
slouken@1895
   863
 * \param windowID The window used for rendering
slouken@1969
   864
 * \param index The index of the rendering driver to initialize, or -1 to initialize the first one supporting the requested flags.
slouken@1895
   865
 * \param flags SDL_RendererFlags
slouken@1895
   866
 *
slouken@1895
   867
 * \return 0 on success, -1 if the flags were not supported, or -2 if
slouken@1895
   868
 *         there isn't enough memory to support the requested flags
slouken@1895
   869
 *
slouken@1895
   870
 * \sa SDL_SelectRenderer()
slouken@1969
   871
 * \sa SDL_GetRendererInfo()
slouken@1895
   872
 * \sa SDL_DestroyRenderer()
slouken@1895
   873
 */
slouken@1895
   874
extern DECLSPEC int SDLCALL SDL_CreateRenderer(SDL_WindowID windowID,
slouken@1895
   875
                                               int index, Uint32 flags);
slouken@1895
   876
slouken@1895
   877
/**
slouken@1895
   878
 * \fn int SDL_SelectRenderer(SDL_WindowID windowID)
slouken@1895
   879
 *
slouken@1895
   880
 * \brief Select the rendering context for a particular window.
slouken@1895
   881
 *
slouken@1895
   882
 * \return 0 on success, -1 if the selected window doesn't have a
slouken@1895
   883
 *         rendering context.
slouken@1895
   884
 */
slouken@1895
   885
extern DECLSPEC int SDLCALL SDL_SelectRenderer(SDL_WindowID windowID);
slouken@1895
   886
slouken@1895
   887
/**
slouken@1969
   888
 * \fn int SDL_GetRendererInfo(SDL_RendererInfo *info)
slouken@1969
   889
 *
slouken@1969
   890
 * \brief Get information about the current rendering context.
slouken@1969
   891
 */
slouken@1969
   892
extern DECLSPEC int SDLCALL SDL_GetRendererInfo(SDL_RendererInfo * info);
slouken@1969
   893
slouken@1969
   894
/**
slouken@1895
   895
 * \fn SDL_TextureID SDL_CreateTexture(Uint32 format, int access, int w, int h)
slouken@1895
   896
 *
slouken@1895
   897
 * \brief Create a texture for the current rendering context.
slouken@1895
   898
 *
slouken@1895
   899
 * \param format The format of the texture
slouken@1895
   900
 * \param access One of the enumerated values in SDL_TextureAccess
slouken@1895
   901
 * \param w The width of the texture in pixels
slouken@1895
   902
 * \param h The height of the texture in pixels
slouken@1895
   903
 *
slouken@1969
   904
 * \return The created texture is returned, or 0 if no rendering context was active,  the format was unsupported, or the width or height were out of range.
slouken@1895
   905
 *
slouken@1895
   906
 * \sa SDL_QueryTexture()
slouken@1895
   907
 * \sa SDL_DestroyTexture()
slouken@1895
   908
 */
slouken@1895
   909
extern DECLSPEC SDL_TextureID SDLCALL SDL_CreateTexture(Uint32 format,
slouken@1895
   910
                                                        int access, int w,
slouken@1895
   911
                                                        int h);
slouken@1895
   912
slouken@1895
   913
/**
slouken@1895
   914
 * \fn SDL_TextureID SDL_CreateTextureFromSurface(Uint32 format, int access, SDL_Surface *surface)
slouken@1895
   915
 *
slouken@1895
   916
 * \brief Create a texture from an existing surface.
slouken@1895
   917
 *
slouken@1895
   918
 * \param format The format of the texture, or 0 to pick an appropriate format
slouken@1895
   919
 * \param access One of the enumerated values in SDL_TextureAccess
slouken@1895
   920
 * \param surface The surface containing pixel data used to fill the texture
slouken@1895
   921
 *
slouken@1969
   922
 * \return The created texture is returned, or 0 if no rendering context was active,  the format was unsupported, or the surface width or height were out of range.
slouken@1895
   923
 *
slouken@1895
   924
 * \note The surface is not modified or freed by this function.
slouken@1895
   925
 *
slouken@1895
   926
 * \sa SDL_QueryTexture()
slouken@1895
   927
 * \sa SDL_DestroyTexture()
slouken@1895
   928
 */
slouken@1895
   929
extern DECLSPEC SDL_TextureID SDLCALL SDL_CreateTextureFromSurface(Uint32
slouken@1895
   930
                                                                   format,
slouken@1895
   931
                                                                   int access,
slouken@1895
   932
                                                                   SDL_Surface
slouken@1895
   933
                                                                   * surface);
slouken@1895
   934
slouken@1895
   935
/**
slouken@1895
   936
 * \fn int SDL_QueryTexture(SDL_TextureID textureID, Uint32 *format, int *access, int *w, int *h)
slouken@1895
   937
 *
slouken@1895
   938
 * \brief Query the attributes of a texture
slouken@1895
   939
 *
slouken@1895
   940
 * \param texture A texture to be queried
slouken@1895
   941
 * \param format A pointer filled in with the raw format of the texture.  The actual format may differ, but pixel transfers will use this format.
slouken@1895
   942
 * \param access A pointer filled in with the actual access to the texture.
slouken@1895
   943
 * \param w A pointer filled in with the width of the texture in pixels
slouken@1895
   944
 * \param h A pointer filled in with the height of the texture in pixels
slouken@1895
   945
 *
slouken@1895
   946
 * \return 0 on success, or -1 if the texture is not valid
slouken@1895
   947
 */
slouken@1895
   948
extern DECLSPEC int SDLCALL SDL_QueryTexture(SDL_TextureID textureID,
slouken@1895
   949
                                             Uint32 * format, int *access,
slouken@1895
   950
                                             int *w, int *h);
slouken@1895
   951
slouken@1895
   952
/**
slouken@1895
   953
 * \fn int SDL_QueryTexturePixels(SDL_TextureID textureID, void **pixels, int pitch)
slouken@1895
   954
 *
slouken@1895
   955
 * \brief Query the pixels of a texture, if the texture does not need to be locked for pixel access.
slouken@1895
   956
 *
slouken@1966
   957
 * \param texture A texture to be queried, which was created with SDL_TEXTUREACCESS_LOCAL
slouken@1895
   958
 * \param pixels A pointer filled with a pointer to the pixels for the texture 
slouken@1895
   959
 * \param pitch A pointer filled in with the pitch of the pixel data
slouken@1895
   960
 *
slouken@1895
   961
 * \return 0 on success, or -1 if the texture is not valid, or must be locked for pixel access.
slouken@1895
   962
 */
slouken@1895
   963
extern DECLSPEC int SDLCALL SDL_QueryTexturePixels(SDL_TextureID textureID,
slouken@1895
   964
                                                   void **pixels, int *pitch);
slouken@1895
   965
slouken@1895
   966
/**
slouken@1895
   967
 * \fn int SDL_SetTexturePalette(SDL_TextureID textureID, const SDL_Color * colors, int firstcolor, int ncolors)
slouken@1895
   968
 *
slouken@1895
   969
 * \brief Update an indexed texture with a color palette
slouken@1895
   970
 *
slouken@1895
   971
 * \param texture The texture to update
slouken@1895
   972
 * \param colors The array of RGB color data
slouken@1895
   973
 * \param firstcolor The first index to update
slouken@1895
   974
 * \param ncolors The number of palette entries to fill with the color data
slouken@1895
   975
 *
slouken@1895
   976
 * \return 0 on success, or -1 if the texture is not valid or not an indexed texture
slouken@1895
   977
 */
slouken@1895
   978
extern DECLSPEC int SDLCALL SDL_SetTexturePalette(SDL_TextureID textureID,
slouken@1895
   979
                                                  const SDL_Color * colors,
slouken@1895
   980
                                                  int firstcolor,
slouken@1895
   981
                                                  int ncolors);
slouken@1895
   982
slouken@1895
   983
/**
slouken@1895
   984
 * \fn int SDL_GetTexturePalette(SDL_TextureID textureID, SDL_Color * colors, int firstcolor, int ncolors)
slouken@1895
   985
 *
slouken@1895
   986
 * \brief Update an indexed texture with a color palette
slouken@1895
   987
 *
slouken@1895
   988
 * \param texture The texture to update
slouken@1895
   989
 * \param colors The array to fill with RGB color data
slouken@1895
   990
 * \param firstcolor The first index to retrieve
slouken@1895
   991
 * \param ncolors The number of palette entries to retrieve
slouken@1895
   992
 *
slouken@1895
   993
 * \return 0 on success, or -1 if the texture is not valid or not an indexed texture
slouken@1895
   994
 */
slouken@1895
   995
extern DECLSPEC int SDLCALL SDL_GetTexturePalette(SDL_TextureID textureID,
slouken@1895
   996
                                                  SDL_Color * colors,
slouken@1895
   997
                                                  int firstcolor,
slouken@1895
   998
                                                  int ncolors);
slouken@1895
   999
slouken@1895
  1000
/**
slouken@1895
  1001
 * \fn int SDL_UpdateTexture(SDL_TextureID textureID, const SDL_Rect *rect, const void *pixels, int pitch)
slouken@1895
  1002
 *
slouken@1895
  1003
 * \brief Update the given texture rectangle with new pixel data.
slouken@1895
  1004
 *
slouken@1895
  1005
 * \param texture The texture to update
slouken@1895
  1006
 * \param rect A pointer to the rectangle of pixels to update, or NULL to update the entire texture.
slouken@1895
  1007
 * \param pixels The raw pixel data
slouken@1895
  1008
 * \param pitch The number of bytes between rows of pixel data
slouken@1895
  1009
 *
slouken@1895
  1010
 * \return 0 on success, or -1 if the texture is not valid
slouken@1895
  1011
 *
slouken@1966
  1012
 * \note This is a very slow function for textures not created with SDL_TEXTUREACCESS_LOCAL.
slouken@1895
  1013
 */
slouken@1895
  1014
extern DECLSPEC int SDLCALL SDL_UpdateTexture(SDL_TextureID textureID,
slouken@1895
  1015
                                              const SDL_Rect * rect,
slouken@1895
  1016
                                              const void *pixels, int pitch);
slouken@1895
  1017
slouken@1895
  1018
/**
slouken@1895
  1019
 * \fn void SDL_LockTexture(SDL_TextureID textureID, const SDL_Rect *rect, int markDirty, void **pixels, int *pitch)
slouken@1895
  1020
 *
slouken@1895
  1021
 * \brief Lock a portion of the texture for pixel access.
slouken@1895
  1022
 *
slouken@1966
  1023
 * \param texture The texture to lock for access, which must have been created with SDL_TEXTUREACCESS_LOCAL.
slouken@1895
  1024
 * \param rect A pointer to the rectangle to lock for access. If the rect is NULL, the entire texture will be locked.
slouken@1895
  1025
 * \param markDirty If this is nonzero, the locked area will be marked dirty when the texture is unlocked.
slouken@1895
  1026
 * \param pixels This is filled in with a pointer to the locked pixels, appropriately offset by the locked area.
slouken@1895
  1027
 * \param pitch This is filled in with the pitch of the locked pixels.
slouken@1895
  1028
 *
slouken@1966
  1029
 * \return 0 on success, or -1 if the texture is not valid or was created with SDL_TEXTUREACCESS_REMOTe
slouken@1895
  1030
 *
slouken@1895
  1031
 * \sa SDL_DirtyTexture()
slouken@1895
  1032
 * \sa SDL_UnlockTexture()
slouken@1895
  1033
 */
slouken@1895
  1034
extern DECLSPEC int SDLCALL SDL_LockTexture(SDL_TextureID textureID,
slouken@1895
  1035
                                            const SDL_Rect * rect,
slouken@1895
  1036
                                            int markDirty, void **pixels,
slouken@1895
  1037
                                            int *pitch);
slouken@1895
  1038
slouken@1895
  1039
/**
slouken@1895
  1040
 * \fn void SDL_UnlockTexture(SDL_TextureID textureID)
slouken@1895
  1041
 *
slouken@1895
  1042
 * \brief Unlock a texture, uploading the changes to video memory, if needed.
slouken@1895
  1043
 *
slouken@1895
  1044
 * \sa SDL_LockTexture()
slouken@1895
  1045
 * \sa SDL_DirtyTexture()
slouken@1895
  1046
 */
slouken@1895
  1047
extern DECLSPEC void SDLCALL SDL_UnlockTexture(SDL_TextureID textureID);
slouken@1895
  1048
slouken@1895
  1049
/**
slouken@1895
  1050
 * \fn void SDL_DirtyTexture(SDL_TextureID textureID, int numrects, const SDL_Rect * rects)
slouken@1895
  1051
 *
slouken@1895
  1052
 * \brief Mark the specified rectangles of the texture as dirty.
slouken@1895
  1053
 *
slouken@1966
  1054
 * \note The texture must have been created with SDL_TEXTUREACCESS_LOCAL.
slouken@1895
  1055
 *
slouken@1895
  1056
 * \sa SDL_LockTexture()
slouken@1895
  1057
 * \sa SDL_UnlockTexture()
slouken@1895
  1058
 */
slouken@1895
  1059
extern DECLSPEC void SDLCALL SDL_DirtyTexture(SDL_TextureID textureID,
slouken@1895
  1060
                                              int numrects,
slouken@1895
  1061
                                              const SDL_Rect * rects);
slouken@1895
  1062
slouken@1895
  1063
/**
slouken@1895
  1064
 * \fn void SDL_RenderFill(const SDL_Rect *rect, Uint32 color)
slouken@1895
  1065
 *
slouken@1895
  1066
 * \brief Fill the current rendering target with the specified color.
slouken@1895
  1067
 *
slouken@1895
  1068
 * \param rect A pointer to the destination rectangle, or NULL for the entire rendering target.
slouken@1895
  1069
 * \param color An ARGB color value.
slouken@1895
  1070
 *
slouken@1969
  1071
 * \return 0 on success, or -1 if there is no rendering context current
slouken@1895
  1072
 */
slouken@1895
  1073
extern DECLSPEC int SDLCALL SDL_RenderFill(const SDL_Rect * rect,
slouken@1895
  1074
                                           Uint32 color);
slouken@1895
  1075
slouken@1895
  1076
/**
slouken@1895
  1077
 * \fn int SDL_RenderCopy(SDL_TextureID textureID, const SDL_Rect *srcrect, const SDL_Rect *dstrect, Uint32 blendMode, Uint32 scaleMode)
slouken@1895
  1078
 *
slouken@1895
  1079
 * \brief Copy a portion of the texture to the current rendering target.
slouken@1895
  1080
 *
slouken@1895
  1081
 * \param texture The source texture.
slouken@1895
  1082
 * \param srcrect A pointer to the source rectangle, or NULL for the entire texture.
slouken@1895
  1083
 * \param dstrect A pointer to the destination rectangle, or NULL for the entire rendering target.
slouken@1895
  1084
 * \param blendMode SDL_TextureBlendMode to be used if the source texture has an alpha channel.
slouken@1895
  1085
 * \param scaleMode SDL_TextureScaleMode to be used if the source and destination rectangles don't have the same width and height.
slouken@1895
  1086
 *
slouken@1969
  1087
 * \return 0 on success, or -1 if there is no rendering context current, or the driver doesn't support the requested operation.
slouken@1895
  1088
 *
slouken@1895
  1089
 * \note You can check the video driver info to see what operations are supported.
slouken@1895
  1090
 */
slouken@1895
  1091
extern DECLSPEC int SDLCALL SDL_RenderCopy(SDL_TextureID textureID,
slouken@1895
  1092
                                           const SDL_Rect * srcrect,
slouken@1895
  1093
                                           const SDL_Rect * dstrect,
slouken@1895
  1094
                                           int blendMode, int scaleMode);
slouken@1895
  1095
slouken@1895
  1096
/**
slouken@1895
  1097
 * \fn int SDL_RenderReadPixels(const SDL_Rect *rect, void *pixels, int pitch)
slouken@1895
  1098
 *
slouken@1895
  1099
 * \brief Read pixels from the current rendering target.
slouken@1895
  1100
 *
slouken@1895
  1101
 * \param rect A pointer to the rectangle to read, or NULL for the entire render target
slouken@1895
  1102
 * \param pixels A pointer to be filled in with the pixel data
slouken@1895
  1103
 * \param pitch The pitch of the pixels parameter
slouken@1895
  1104
 *
slouken@1895
  1105
 * \return 0 on success, or -1 if pixel reading is not supported.
slouken@1895
  1106
 *
slouken@1895
  1107
 * \warning This is a very slow operation, and should not be used frequently.
slouken@1895
  1108
 */
slouken@1895
  1109
extern DECLSPEC int SDLCALL SDL_RenderReadPixels(const SDL_Rect * rect,
slouken@1895
  1110
                                                 void *pixels, int pitch);
slouken@1895
  1111
slouken@1895
  1112
/**
slouken@1895
  1113
 * \fn int SDL_RenderWritePixels(const SDL_Rect *rect, const void *pixels, int pitch)
slouken@1895
  1114
 *
slouken@1895
  1115
 * \brief Write pixels to the current rendering target.
slouken@1895
  1116
 *
slouken@1895
  1117
 * \param rect A pointer to the rectangle to write, or NULL for the entire render target
slouken@1895
  1118
 * \param pixels A pointer to the pixel data to write
slouken@1895
  1119
 * \param pitch The pitch of the pixels parameter
slouken@1895
  1120
 *
slouken@1895
  1121
 * \return 0 on success, or -1 if pixel writing is not supported.
slouken@1895
  1122
 *
slouken@1895
  1123
 * \warning This is a very slow operation, and should not be used frequently.
slouken@1895
  1124
 */
slouken@1895
  1125
extern DECLSPEC int SDLCALL SDL_RenderWritePixels(const SDL_Rect * rect,
slouken@1895
  1126
                                                  const void *pixels,
slouken@1895
  1127
                                                  int pitch);
slouken@1895
  1128
slouken@1895
  1129
/**
slouken@1895
  1130
 * \fn void SDL_RenderPresent(void)
slouken@1895
  1131
 *
slouken@1895
  1132
 * \brief Update the screen with rendering performed.
slouken@1895
  1133
 */
slouken@1895
  1134
extern DECLSPEC void SDLCALL SDL_RenderPresent(void);
slouken@1895
  1135
slouken@1895
  1136
/**
slouken@1895
  1137
 * \fn void SDL_DestroyTexture(SDL_TextureID textureID);
slouken@1895
  1138
 *
slouken@1895
  1139
 * \brief Destroy the specified texture.
slouken@1895
  1140
 *
slouken@1895
  1141
 * \sa SDL_CreateTexture()
slouken@1895
  1142
 * \sa SDL_CreateTextureFromSurface()
slouken@1895
  1143
 */
slouken@1895
  1144
extern DECLSPEC void SDLCALL SDL_DestroyTexture(SDL_TextureID textureID);
slouken@1895
  1145
slouken@1895
  1146
/**
slouken@1895
  1147
 * \fn void SDL_DestroyRenderer(SDL_WindowID windowID);
slouken@1895
  1148
 *
slouken@1895
  1149
 * \brief Destroy the rendering context for a window and free associated
slouken@1895
  1150
 *        textures.
slouken@1895
  1151
 *
slouken@1895
  1152
 * \sa SDL_CreateRenderer()
slouken@1895
  1153
 */
slouken@1895
  1154
extern DECLSPEC void SDLCALL SDL_DestroyRenderer(SDL_WindowID windowID);
slouken@0
  1155
slouken@0
  1156
/*
slouken@0
  1157
 * Maps an RGB triple to an opaque pixel value for a given pixel format
slouken@0
  1158
 */
slouken@337
  1159
extern DECLSPEC Uint32 SDLCALL SDL_MapRGB
slouken@1895
  1160
    (SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b);
slouken@0
  1161
slouken@0
  1162
/*
slouken@0
  1163
 * Maps an RGBA quadruple to a pixel value for a given pixel format
slouken@0
  1164
 */
slouken@1895
  1165
extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(SDL_PixelFormat * format,
slouken@1895
  1166
                                           Uint8 r, Uint8 g, Uint8 b,
slouken@1895
  1167
                                           Uint8 a);
slouken@0
  1168
slouken@0
  1169
/*
slouken@0
  1170
 * Maps a pixel value into the RGB components for a given pixel format
slouken@0
  1171
 */
slouken@1895
  1172
extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel, SDL_PixelFormat * fmt,
slouken@1895
  1173
                                        Uint8 * r, Uint8 * g, Uint8 * b);
slouken@0
  1174
slouken@0
  1175
/*
slouken@0
  1176
 * Maps a pixel value into the RGBA components for a given pixel format
slouken@0
  1177
 */
slouken@1895
  1178
extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat * fmt,
slouken@1895
  1179
                                         Uint8 * r, Uint8 * g, Uint8 * b,
slouken@1895
  1180
                                         Uint8 * a);
slouken@0
  1181
slouken@0
  1182
/*
slouken@0
  1183
 * Allocate and free an RGB surface (must be called after SDL_SetVideoMode)
slouken@0
  1184
 * If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
slouken@0
  1185
 * If the depth is greater than 8 bits, the pixel format is set using the
slouken@0
  1186
 * flags '[RGB]mask'.
slouken@0
  1187
 * If the function runs out of memory, it will return NULL.
slouken@0
  1188
 *
slouken@0
  1189
 * The 'flags' tell what kind of surface to create.
slouken@0
  1190
 * SDL_SRCCOLORKEY indicates that the surface will be used for colorkey blits.
slouken@1895
  1191
 * SDL_SRCALPHA means that the surface will be used for alpha blits.
slouken@0
  1192
 */
slouken@1895
  1193
extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurface
slouken@1895
  1194
    (Uint32 flags, int width, int height, int depth,
slouken@1895
  1195
     Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
slouken@1895
  1196
extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels,
slouken@1895
  1197
                                                              int width,
slouken@1895
  1198
                                                              int height,
slouken@1895
  1199
                                                              int depth,
slouken@1895
  1200
                                                              int pitch,
slouken@1895
  1201
                                                              Uint32 Rmask,
slouken@1895
  1202
                                                              Uint32 Gmask,
slouken@1895
  1203
                                                              Uint32 Bmask,
slouken@1895
  1204
                                                              Uint32 Amask);
slouken@1895
  1205
extern DECLSPEC SDL_Surface *SDLCALL
slouken@1895
  1206
SDL_CreateRGBSurfaceFromTexture(SDL_TextureID textureID);
slouken@1895
  1207
extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface * surface);
slouken@1895
  1208
slouken@1895
  1209
/**
slouken@1895
  1210
 * \fn int SDL_SetSurfacePalette(SDL_Surface *surface, SDL_Palette *palette)
slouken@1895
  1211
 *
slouken@1895
  1212
 * \brief Set the palette used by a surface.
slouken@1895
  1213
 *
slouken@1895
  1214
 * \return 0, or -1 if the surface format doesn't use a palette.
slouken@1895
  1215
 *
slouken@1895
  1216
 * \note A single palette can be shared with many surfaces.
slouken@1895
  1217
 */
slouken@1895
  1218
extern DECLSPEC int SDLCALL SDL_SetSurfacePalette(SDL_Surface * surface,
slouken@1895
  1219
                                                  SDL_Palette * palette);
slouken@0
  1220
slouken@0
  1221
/*
slouken@0
  1222
 * SDL_LockSurface() sets up a surface for directly accessing the pixels.
slouken@0
  1223
 * Between calls to SDL_LockSurface()/SDL_UnlockSurface(), you can write
slouken@0
  1224
 * to and read from 'surface->pixels', using the pixel format stored in 
slouken@0
  1225
 * 'surface->format'.  Once you are done accessing the surface, you should 
slouken@0
  1226
 * use SDL_UnlockSurface() to release it.
slouken@0
  1227
 *
slouken@0
  1228
 * Not all surfaces require locking.  If SDL_MUSTLOCK(surface) evaluates
slouken@0
  1229
 * to 0, then you can read and write to the surface at any time, and the
slouken@1895
  1230
 * pixel format of the surface will not change.
slouken@0
  1231
 * 
slouken@0
  1232
 * No operating system or library calls should be made between lock/unlock
slouken@0
  1233
 * pairs, as critical system locks may be held during this time.
slouken@0
  1234
 *
slouken@0
  1235
 * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked.
slouken@0
  1236
 */
slouken@1895
  1237
extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface * surface);
slouken@1895
  1238
extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface * surface);
slouken@0
  1239
slouken@0
  1240
/*
slouken@0
  1241
 * Load a surface from a seekable SDL data source (memory or file.)
slouken@0
  1242
 * If 'freesrc' is non-zero, the source will be closed after being read.
slouken@0
  1243
 * Returns the new surface, or NULL if there was an error.
slouken@0
  1244
 * The new surface should be freed with SDL_FreeSurface().
slouken@0
  1245
 */
slouken@1895
  1246
extern DECLSPEC SDL_Surface *SDLCALL SDL_LoadBMP_RW(SDL_RWops * src,
slouken@1895
  1247
                                                    int freesrc);
slouken@0
  1248
slouken@0
  1249
/* Convenience macro -- load a surface from a file */
slouken@0
  1250
#define SDL_LoadBMP(file)	SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1)
slouken@0
  1251
slouken@0
  1252
/*
slouken@0
  1253
 * Save a surface to a seekable SDL data source (memory or file.)
slouken@0
  1254
 * If 'freedst' is non-zero, the source will be closed after being written.
slouken@0
  1255
 * Returns 0 if successful or -1 if there was an error.
slouken@0
  1256
 */
slouken@337
  1257
extern DECLSPEC int SDLCALL SDL_SaveBMP_RW
slouken@1895
  1258
    (SDL_Surface * surface, SDL_RWops * dst, int freedst);
slouken@0
  1259
slouken@0
  1260
/* Convenience macro -- save a surface to a file */
slouken@0
  1261
#define SDL_SaveBMP(surface, file) \
slouken@0
  1262
		SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1)
slouken@0
  1263
slouken@0
  1264
/*
slouken@0
  1265
 * Sets the color key (transparent pixel) in a blittable surface.
slouken@0
  1266
 * If 'flag' is SDL_SRCCOLORKEY (optionally OR'd with SDL_RLEACCEL), 
slouken@0
  1267
 * 'key' will be the transparent pixel in the source image of a blit.
slouken@0
  1268
 * SDL_RLEACCEL requests RLE acceleration for the surface if present,
slouken@0
  1269
 * and removes RLE acceleration if absent.
slouken@0
  1270
 * If 'flag' is 0, this function clears any current color key.
slouken@0
  1271
 * This function returns 0, or -1 if there was an error.
slouken@0
  1272
 */
slouken@337
  1273
extern DECLSPEC int SDLCALL SDL_SetColorKey
slouken@1895
  1274
    (SDL_Surface * surface, Uint32 flag, Uint32 key);
slouken@0
  1275
slouken@0
  1276
/*
slouken@0
  1277
 * This function sets the alpha value for the entire surface, as opposed to
slouken@0
  1278
 * using the alpha component of each pixel. This value measures the range
slouken@0
  1279
 * of transparency of the surface, 0 being completely transparent to 255
slouken@0
  1280
 * being completely opaque. An 'alpha' value of 255 causes blits to be
slouken@0
  1281
 * opaque, the source pixels copied to the destination (the default). Note
slouken@0
  1282
 * that per-surface alpha can be combined with colorkey transparency.
slouken@0
  1283
 *
slouken@0
  1284
 * If 'flag' is 0, alpha blending is disabled for the surface.
slouken@0
  1285
 * If 'flag' is SDL_SRCALPHA, alpha blending is enabled for the surface.
slouken@0
  1286
 * OR:ing the flag with SDL_RLEACCEL requests RLE acceleration for the
slouken@0
  1287
 * surface; if SDL_RLEACCEL is not specified, the RLE accel will be removed.
slouken@432
  1288
 *
slouken@432
  1289
 * The 'alpha' parameter is ignored for surfaces that have an alpha channel.
slouken@0
  1290
 */
slouken@1895
  1291
extern DECLSPEC int SDLCALL SDL_SetAlpha(SDL_Surface * surface, Uint32 flag,
slouken@1895
  1292
                                         Uint8 alpha);
slouken@0
  1293
slouken@0
  1294
/*
slouken@0
  1295
 * Sets the clipping rectangle for the destination surface in a blit.
slouken@0
  1296
 *
slouken@0
  1297
 * If the clip rectangle is NULL, clipping will be disabled.
slouken@0
  1298
 * If the clip rectangle doesn't intersect the surface, the function will
slouken@0
  1299
 * return SDL_FALSE and blits will be completely clipped.  Otherwise the
slouken@0
  1300
 * function returns SDL_TRUE and blits to the surface will be clipped to
slouken@0
  1301
 * the intersection of the surface area and the clipping rectangle.
slouken@0
  1302
 *
slouken@0
  1303
 * Note that blits are automatically clipped to the edges of the source
slouken@0
  1304
 * and destination surfaces.
slouken@0
  1305
 */
slouken@1895
  1306
extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface * surface,
slouken@1895
  1307
                                                 const SDL_Rect * rect);
slouken@0
  1308
slouken@0
  1309
/*
slouken@0
  1310
 * Gets the clipping rectangle for the destination surface in a blit.
slouken@0
  1311
 * 'rect' must be a pointer to a valid rectangle which will be filled
slouken@0
  1312
 * with the correct values.
slouken@0
  1313
 */
slouken@1895
  1314
extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface * surface,
slouken@1895
  1315
                                             SDL_Rect * rect);
slouken@0
  1316
slouken@0
  1317
/*
slouken@0
  1318
 * Creates a new surface of the specified format, and then copies and maps 
slouken@0
  1319
 * the given surface to it so the blit of the converted surface will be as 
slouken@0
  1320
 * fast as possible.  If this function fails, it returns NULL.
slouken@0
  1321
 *
slouken@0
  1322
 * The 'flags' parameter is passed to SDL_CreateRGBSurface() and has those 
slouken@0
  1323
 * semantics.  You can also pass SDL_RLEACCEL in the flags parameter and
slouken@0
  1324
 * SDL will try to RLE accelerate colorkey and alpha blits in the resulting
slouken@0
  1325
 * surface.
slouken@0
  1326
 *
slouken@0
  1327
 * This function is used internally by SDL_DisplayFormat().
slouken@0
  1328
 */
slouken@1895
  1329
extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurface
slouken@1895
  1330
    (SDL_Surface * src, SDL_PixelFormat * fmt, Uint32 flags);
slouken@1895
  1331
slouken@1895
  1332
/*
slouken@1895
  1333
 * This function performs a fast fill of the given rectangle with 'color'
slouken@1895
  1334
 * The given rectangle is clipped to the destination surface clip area
slouken@1895
  1335
 * and the final fill rectangle is saved in the passed in pointer.
slouken@1895
  1336
 * If 'dstrect' is NULL, the whole surface will be filled with 'color'
slouken@1895
  1337
 * The color should be a pixel of the format used by the surface, and 
slouken@1895
  1338
 * can be generated by the SDL_MapRGB() function.
slouken@1895
  1339
 * This function returns 0 on success, or -1 on error.
slouken@1895
  1340
 */
slouken@1895
  1341
extern DECLSPEC int SDLCALL SDL_FillRect
slouken@1895
  1342
    (SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color);
slouken@0
  1343
slouken@0
  1344
/*
slouken@0
  1345
 * This performs a fast blit from the source surface to the destination
slouken@0
  1346
 * surface.  It assumes that the source and destination rectangles are
slouken@0
  1347
 * the same size.  If either 'srcrect' or 'dstrect' are NULL, the entire
slouken@0
  1348
 * surface (src or dst) is copied.  The final blit rectangles are saved
slouken@0
  1349
 * in 'srcrect' and 'dstrect' after all clipping is performed.
slouken@0
  1350
 * If the blit is successful, it returns 0, otherwise it returns -1.
slouken@0
  1351
 *
slouken@0
  1352
 * The blit function should not be called on a locked surface.
slouken@0
  1353
 *
slouken@0
  1354
 * The blit semantics for surfaces with and without alpha and colorkey
slouken@0
  1355
 * are defined as follows:
slouken@0
  1356
 *
slouken@0
  1357
 * RGBA->RGB:
slouken@0
  1358
 *     SDL_SRCALPHA set:
slouken@0
  1359
 * 	alpha-blend (using alpha-channel).
slouken@0
  1360
 * 	SDL_SRCCOLORKEY ignored.
slouken@0
  1361
 *     SDL_SRCALPHA not set:
slouken@0
  1362
 * 	copy RGB.
slouken@0
  1363
 * 	if SDL_SRCCOLORKEY set, only copy the pixels matching the
slouken@0
  1364
 * 	RGB values of the source colour key, ignoring alpha in the
slouken@0
  1365
 * 	comparison.
slouken@0
  1366
 * 
slouken@0
  1367
 * RGB->RGBA:
slouken@0
  1368
 *     SDL_SRCALPHA set:
slouken@0
  1369
 * 	alpha-blend (using the source per-surface alpha value);
slouken@0
  1370
 * 	set destination alpha to opaque.
slouken@0
  1371
 *     SDL_SRCALPHA not set:
slouken@431
  1372
 * 	copy RGB, set destination alpha to source per-surface alpha value.
slouken@0
  1373
 *     both:
slouken@0
  1374
 * 	if SDL_SRCCOLORKEY set, only copy the pixels matching the
slouken@0
  1375
 * 	source colour key.
slouken@0
  1376
 * 
slouken@0
  1377
 * RGBA->RGBA:
slouken@0
  1378
 *     SDL_SRCALPHA set:
slouken@0
  1379
 * 	alpha-blend (using the source alpha channel) the RGB values;
slouken@0
  1380
 * 	leave destination alpha untouched. [Note: is this correct?]
slouken@0
  1381
 * 	SDL_SRCCOLORKEY ignored.
slouken@0
  1382
 *     SDL_SRCALPHA not set:
slouken@0
  1383
 * 	copy all of RGBA to the destination.
slouken@0
  1384
 * 	if SDL_SRCCOLORKEY set, only copy the pixels matching the
slouken@0
  1385
 * 	RGB values of the source colour key, ignoring alpha in the
slouken@0
  1386
 * 	comparison.
slouken@0
  1387
 * 
slouken@0
  1388
 * RGB->RGB: 
slouken@0
  1389
 *     SDL_SRCALPHA set:
slouken@0
  1390
 * 	alpha-blend (using the source per-surface alpha value).
slouken@0
  1391
 *     SDL_SRCALPHA not set:
slouken@0
  1392
 * 	copy RGB.
slouken@0
  1393
 *     both:
slouken@0
  1394
 * 	if SDL_SRCCOLORKEY set, only copy the pixels matching the
slouken@0
  1395
 * 	source colour key.
slouken@0
  1396
 *
slouken@0
  1397
 * If either of the surfaces were in video memory, and the blit returns -2,
slouken@0
  1398
 * the video memory was lost, so it should be reloaded with artwork and 
slouken@0
  1399
 * re-blitted:
slouken@0
  1400
	while ( SDL_BlitSurface(image, imgrect, screen, dstrect) == -2 ) {
slouken@0
  1401
		while ( SDL_LockSurface(image) < 0 )
slouken@0
  1402
			Sleep(10);
slouken@0
  1403
		-- Write image pixels to image->pixels --
slouken@0
  1404
		SDL_UnlockSurface(image);
slouken@0
  1405
	}
slouken@0
  1406
 * This happens under DirectX 5.0 when the system switches away from your
slouken@0
  1407
 * fullscreen application.  The lock will also fail until you have access
slouken@0
  1408
 * to the video memory again.
slouken@0
  1409
 */
slouken@0
  1410
/* You should call SDL_BlitSurface() unless you know exactly how SDL
slouken@0
  1411
   blitting works internally and how to use the other blit functions.
slouken@0
  1412
*/
slouken@0
  1413
#define SDL_BlitSurface SDL_UpperBlit
slouken@0
  1414
slouken@0
  1415
/* This is the public blit function, SDL_BlitSurface(), and it performs
slouken@0
  1416
   rectangle validation and clipping before passing it to SDL_LowerBlit()
slouken@0
  1417
*/
slouken@337
  1418
extern DECLSPEC int SDLCALL SDL_UpperBlit
slouken@1895
  1419
    (SDL_Surface * src, SDL_Rect * srcrect,
slouken@1895
  1420
     SDL_Surface * dst, SDL_Rect * dstrect);
slouken@0
  1421
/* This is a semi-private blit function and it performs low-level surface
slouken@0
  1422
   blitting only.
slouken@0
  1423
*/
slouken@337
  1424
extern DECLSPEC int SDLCALL SDL_LowerBlit
slouken@1895
  1425
    (SDL_Surface * src, SDL_Rect * srcrect,
slouken@1895
  1426
     SDL_Surface * dst, SDL_Rect * dstrect);
slouken@0
  1427
slouken@1895
  1428
/**
slouken@1895
  1429
 * \fn int SDL_SoftStretch(SDL_Surface * src, SDL_Rect * srcrect, SDL_Surface * dst, SDL_Rect * dstrect)
slouken@1895
  1430
 *
slouken@1895
  1431
 * \brief Perform a fast, low quality, stretch blit between two surfaces of the same pixel format.
slouken@1895
  1432
 *
slouken@1895
  1433
 * \note This function uses a static buffer, and is not thread-safe.
slouken@0
  1434
 */
slouken@1895
  1435
extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface * src,
slouken@1895
  1436
                                            SDL_Rect * srcrect,
slouken@1895
  1437
                                            SDL_Surface * dst,
slouken@1895
  1438
                                            SDL_Rect * dstrect);
slouken@0
  1439
slouken@0
  1440
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
slouken@0
  1441
/* OpenGL support functions.                                                 */
slouken@0
  1442
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
slouken@0
  1443
slouken@1895
  1444
/**
slouken@1895
  1445
 * \fn int SDL_GL_LoadLibrary(const char *path)
slouken@0
  1446
 *
slouken@1895
  1447
 * \brief Dynamically load an OpenGL library.
slouken@1895
  1448
 *
slouken@1895
  1449
 * \param path The platform dependent OpenGL library name, or NULL to open the default OpenGL library
slouken@1895
  1450
 *
slouken@1895
  1451
 * \return 0 on success, or -1 if the library couldn't be loaded
slouken@1895
  1452
 *
slouken@1936
  1453
 * This should be done after initializing the video driver, but before
slouken@1936
  1454
 * creating any OpenGL windows.  If no OpenGL library is loaded, the default
slouken@1936
  1455
 * library will be loaded upon creation of the first OpenGL window.
slouken@1936
  1456
 *
slouken@1895
  1457
 * \note If you do this, you need to retrieve all of the GL functions used in
slouken@1895
  1458
 *       your program from the dynamic library using SDL_GL_GetProcAddress().
slouken@1895
  1459
 *
slouken@1895
  1460
 * \sa SDL_GL_GetProcAddress()
slouken@0
  1461
 */
slouken@337
  1462
extern DECLSPEC int SDLCALL SDL_GL_LoadLibrary(const char *path);
slouken@0
  1463
slouken@1895
  1464
/**
slouken@1895
  1465
 * \fn void *SDL_GL_GetProcAddress(const char *proc)
slouken@1895
  1466
 *
slouken@1895
  1467
 * \brief Get the address of an OpenGL function.
slouken@0
  1468
 */
slouken@1895
  1469
extern DECLSPEC void *SDLCALL SDL_GL_GetProcAddress(const char *proc);
slouken@0
  1470
slouken@1895
  1471
/**
slouken@1926
  1472
 * \fn SDL_bool SDL_GL_ExtensionSupported(const char *extension)
slouken@1926
  1473
 *
slouken@1926
  1474
 * \brief Return true if an OpenGL extension is supported for the current context.
slouken@1926
  1475
 */
slouken@1926
  1476
extern DECLSPEC SDL_bool SDLCALL SDL_GL_ExtensionSupported(const char
slouken@1926
  1477
                                                           *extension);
slouken@1926
  1478
slouken@1926
  1479
/**
slouken@1895
  1480
 * \fn int SDL_GL_SetAttribute(SDL_GLattr attr, int value)
slouken@1895
  1481
 *
slouken@1895
  1482
 * \brief Set an OpenGL window attribute before window creation.
slouken@0
  1483
 */
slouken@337
  1484
extern DECLSPEC int SDLCALL SDL_GL_SetAttribute(SDL_GLattr attr, int value);
slouken@0
  1485
slouken@1895
  1486
/**
slouken@1895
  1487
 * \fn int SDL_GL_GetWindowAttribute(SDL_WindowID windowID, SDL_GLattr attr, int *value)
slouken@0
  1488
 *
slouken@1936
  1489
 * \brief Get the actual value for an attribute from the current context.
slouken@0
  1490
 */
slouken@1936
  1491
extern DECLSPEC int SDLCALL SDL_GL_GetAttribute(SDL_GLattr attr, int *value);
slouken@0
  1492
slouken@1895
  1493
/**
slouken@1895
  1494
 * \fn SDL_GLContext SDL_GL_CreateContext(SDL_WindowID windowID)
slouken@1895
  1495
 *
slouken@1895
  1496
 * \brief Create an OpenGL context for use with an OpenGL window, and make it current.
slouken@1895
  1497
 *
slouken@1895
  1498
 * \sa SDL_GL_DeleteContext()
slouken@1895
  1499
 */
slouken@1895
  1500
extern DECLSPEC SDL_GLContext SDLCALL SDL_GL_CreateContext(SDL_WindowID
slouken@1895
  1501
                                                           windowID);
slouken@1895
  1502
slouken@1895
  1503
/**
slouken@1895
  1504
 * \fn int SDL_GL_MakeCurrent(SDL_WindowID windowID, SDL_GLContext context)
slouken@1895
  1505
 *
slouken@1895
  1506
 * \brief Set up an OpenGL context for rendering into an OpenGL window.
slouken@1895
  1507
 *
slouken@1895
  1508
 * \note The context must have been created with a compatible window.
slouken@1895
  1509
 */
slouken@1895
  1510
extern DECLSPEC int SDLCALL SDL_GL_MakeCurrent(SDL_WindowID windowID,
slouken@1895
  1511
                                               SDL_GLContext context);
slouken@1895
  1512
slouken@1895
  1513
/**
slouken@1895
  1514
 * \fn int SDL_GL_SetSwapInterval(int interval)
slouken@1895
  1515
 *
slouken@1895
  1516
 * \brief Set the swap interval for the current OpenGL context.
slouken@1895
  1517
 *
slouken@1912
  1518
 * \param interval 0 for immediate updates, 1 for updates synchronized with the vertical retrace
slouken@1912
  1519
 *
slouken@1912
  1520
 * \return 0 on success, or -1 if setting the swap interval is not supported.
slouken@1912
  1521
 *
slouken@1895
  1522
 * \sa SDL_GL_GetSwapInterval()
slouken@1895
  1523
 */
slouken@1895
  1524
extern DECLSPEC int SDLCALL SDL_GL_SetSwapInterval(int interval);
slouken@1895
  1525
slouken@1895
  1526
/**
slouken@1895
  1527
 * \fn int SDL_GL_GetSwapInterval(void)
slouken@1895
  1528
 *
slouken@1895
  1529
 * \brief Get the swap interval for the current OpenGL context.
slouken@1895
  1530
 *
slouken@1912
  1531
 * \return 0 if there is no vertical retrace synchronization, 1 if the buffer swap is synchronized with the vertical retrace, and -1 if getting the swap interval is not supported.
slouken@1912
  1532
 *
slouken@1895
  1533
 * \sa SDL_GL_SetSwapInterval()
slouken@1895
  1534
 */
slouken@1895
  1535
extern DECLSPEC int SDLCALL SDL_GL_GetSwapInterval(void);
slouken@1895
  1536
slouken@1895
  1537
/**
slouken@1912
  1538
 * \fn void SDL_GL_SwapWindow(SDL_WindowID windowID)
slouken@1895
  1539
 *
slouken@1912
  1540
 * \brief Swap the OpenGL buffers for the window, if double-buffering is supported.
slouken@0
  1541
 */
slouken@1912
  1542
extern DECLSPEC void SDLCALL SDL_GL_SwapWindow(SDL_WindowID windowID);
slouken@0
  1543
slouken@1895
  1544
/**
slouken@1895
  1545
 * \fn void SDL_GL_DeleteContext(SDL_GLContext context)
slouken@1895
  1546
 *
slouken@1895
  1547
 * \brief Delete an OpenGL context.
slouken@1895
  1548
 *
slouken@1895
  1549
 * \sa SDL_GL_CreateContext()
slouken@0
  1550
 */
slouken@1895
  1551
extern DECLSPEC void SDLCALL SDL_GL_DeleteContext(SDL_GLContext context);
slouken@0
  1552
slouken@1895
  1553
/**
slouken@1895
  1554
 * \def SDL_RectEmpty()
slouken@1895
  1555
 *
slouken@1895
  1556
 * \brief Returns true if the rectangle has no area.
slouken@1895
  1557
 */
slouken@1895
  1558
#define SDL_RectEmpty(X)    (((X)->w <= 0) || ((X)->h <= 0))
slouken@0
  1559
slouken@1895
  1560
/**
slouken@1895
  1561
 * \def SDL_RectEquals()
slouken@1895
  1562
 *
slouken@1895
  1563
 * \brief Returns true if the two rectangles are equal.
slouken@0
  1564
 */
slouken@1895
  1565
#define SDL_RectEquals(A, B)   (((A)->x == (B)->x) && ((A)->y == (B)->y) && \
slouken@1895
  1566
                                ((A)->w == (B)->w) && ((A)->h == (B)->h))
slouken@0
  1567
slouken@1895
  1568
/**
slouken@1895
  1569
 * \fn SDL_bool SDL_HasIntersection(const SDL_Rect * A, const SDL_Rect * B);
slouken@1895
  1570
 *
slouken@1895
  1571
 * \brief Determine whether two rectangles intersect.
slouken@1895
  1572
 *
slouken@1895
  1573
 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
slouken@0
  1574
 */
slouken@1895
  1575
extern DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect * A,
slouken@1895
  1576
                                                     const SDL_Rect * B);
slouken@0
  1577
slouken@1895
  1578
/**
slouken@1895
  1579
 * \fn SDL_bool SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
slouken@1895
  1580
 *
slouken@1895
  1581
 * \brief Calculate the intersection of two rectangles.
slouken@1895
  1582
 *
slouken@1895
  1583
 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
slouken@0
  1584
 */
slouken@1895
  1585
extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect * A,
slouken@1895
  1586
                                                   const SDL_Rect * B,
slouken@1895
  1587
                                                   SDL_Rect * result);
slouken@0
  1588
slouken@1895
  1589
/**
slouken@1895
  1590
 * \fn void SDL_UnionRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
slouken@0
  1591
 *
slouken@1895
  1592
 * \brief Calculate the union of two rectangles
slouken@0
  1593
 */
slouken@1895
  1594
extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A,
slouken@1895
  1595
                                           const SDL_Rect * B,
slouken@1895
  1596
                                           SDL_Rect * result);
slouken@0
  1597
slouken@0
  1598
/* Ends C function definitions when using C++ */
slouken@0
  1599
#ifdef __cplusplus
slouken@1895
  1600
/* *INDENT-OFF* */
slouken@0
  1601
}
slouken@1895
  1602
/* *INDENT-ON* */
slouken@0
  1603
#endif
slouken@0
  1604
#include "close_code.h"
slouken@0
  1605
slouken@0
  1606
#endif /* _SDL_video_h */
slouken@1895
  1607
slouken@1895
  1608
/* vi: set ts=4 sw=4 expandtab: */