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annotate src/joystick/SDL_joystick_c.h @ 3466:a288892cd24c

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SDL_RenderReadPixels() needs to flush asynchronous operations before it reads. The semantics are that it reads the back buffer, and those pixels may not be available once SDL_RenderPresent() has happened.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 05:05:19 +0000
parents 99210400e8b9
children f7b03b6838cb
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Useful functions and variables from SDL_joystick.c */
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25 #include "SDL_joystick.h"
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26
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27 /* The number of available joysticks on the system */
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28 extern Uint8 SDL_numjoysticks;
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29
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30 /* Internal event queueing functions */
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31 extern int SDL_PrivateJoystickAxis(SDL_Joystick * joystick,
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32 Uint8 axis, Sint16 value);
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33 extern int SDL_PrivateJoystickBall(SDL_Joystick * joystick,
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34 Uint8 ball, Sint16 xrel, Sint16 yrel);
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35 extern int SDL_PrivateJoystickHat(SDL_Joystick * joystick,
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36 Uint8 hat, Uint8 value);
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37 extern int SDL_PrivateJoystickButton(SDL_Joystick * joystick,
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38 Uint8 button, Uint8 state);
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40 /* Internal sanity checking functions */
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41 extern int SDL_PrivateJoystickValid(SDL_Joystick ** joystick);
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42
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43 /* vi: set ts=4 sw=4 expandtab: */