Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 4591:1e998db9b597
Implement blending modes for textures. Fix off-screen pixmaps to be ARGB rather than RGB to enable blending across frames. Clear the screen and off-screen pixmaps when the renderer is created.
author | Sunny Sachanandani <sunnysachanandani@gmail.com> |
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date | Wed, 14 Jul 2010 19:17:11 +0530 |
parents | 5e7e1f1a4056 |
children | 791b3256fb22 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3697 | 3 Copyright (C) 1997-2010 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
252
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* Initialization code for SDL */ | |
25 | |
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26 #include "SDL.h" |
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27 #include "SDL_fatal.h" |
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28 #include "SDL_assert.h" |
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29 |
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30 #if !SDL_VIDEO_DISABLED |
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31 #include "video/SDL_leaks.h" |
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32 #endif |
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33 |
0 | 34 /* Initialization/Cleanup routines */ |
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35 #if !SDL_JOYSTICK_DISABLED |
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36 extern int SDL_JoystickInit(void); |
0 | 37 extern void SDL_JoystickQuit(void); |
38 #endif | |
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39 #if !SDL_HAPTIC_DISABLED |
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40 extern int SDL_HapticInit(void); |
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41 extern int SDL_HapticQuit(void); |
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42 #endif |
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43 #if !SDL_TIMERS_DISABLED |
0 | 44 extern void SDL_StartTicks(void); |
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45 extern int SDL_TimerInit(void); |
0 | 46 extern void SDL_TimerQuit(void); |
47 #endif | |
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48 #if defined(__WIN32__) |
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49 extern int SDL_HelperWindowCreate(void); |
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50 extern int SDL_HelperWindowDestroy(void); |
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51 #endif |
0 | 52 |
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53 extern int SDL_AssertionsInit(void); |
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54 extern void SDL_AssertionsQuit(void); |
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55 |
0 | 56 /* The initialized subsystems */ |
57 static Uint32 SDL_initialized = 0; | |
58 static Uint32 ticks_started = 0; | |
59 | |
60 #ifdef CHECK_LEAKS | |
61 int surfaces_allocated = 0; | |
62 #endif | |
63 | |
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64 int |
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65 SDL_InitSubSystem(Uint32 flags) |
0 | 66 { |
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67 #if !SDL_VIDEO_DISABLED |
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68 /* Initialize the video/event subsystem */ |
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69 if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) { |
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70 if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) { |
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71 return (-1); |
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72 } |
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73 SDL_initialized |= SDL_INIT_VIDEO; |
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74 } |
0 | 75 #else |
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76 if (flags & SDL_INIT_VIDEO) { |
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77 SDL_SetError("SDL not built with video support"); |
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78 return (-1); |
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79 } |
0 | 80 #endif |
81 | |
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82 #if !SDL_AUDIO_DISABLED |
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83 /* Initialize the audio subsystem */ |
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84 if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) { |
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85 if (SDL_AudioInit(NULL) < 0) { |
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86 return (-1); |
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87 } |
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88 SDL_initialized |= SDL_INIT_AUDIO; |
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89 } |
0 | 90 #else |
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91 if (flags & SDL_INIT_AUDIO) { |
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92 SDL_SetError("SDL not built with audio support"); |
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93 return (-1); |
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94 } |
0 | 95 #endif |
96 | |
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97 #if !SDL_TIMERS_DISABLED |
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98 /* Initialize the timer subsystem */ |
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99 if (!ticks_started) { |
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100 SDL_StartTicks(); |
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101 ticks_started = 1; |
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102 } |
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103 if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) { |
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104 if (SDL_TimerInit() < 0) { |
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105 return (-1); |
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106 } |
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107 SDL_initialized |= SDL_INIT_TIMER; |
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108 } |
0 | 109 #else |
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110 if (flags & SDL_INIT_TIMER) { |
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111 SDL_SetError("SDL not built with timer support"); |
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112 return (-1); |
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113 } |
0 | 114 #endif |
115 | |
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116 #if !SDL_JOYSTICK_DISABLED |
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117 /* Initialize the joystick subsystem */ |
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118 if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) { |
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119 if (SDL_JoystickInit() < 0) { |
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120 return (-1); |
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121 } |
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122 SDL_initialized |= SDL_INIT_JOYSTICK; |
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123 } |
0 | 124 #else |
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125 if (flags & SDL_INIT_JOYSTICK) { |
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126 SDL_SetError("SDL not built with joystick support"); |
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127 return (-1); |
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128 } |
0 | 129 #endif |
130 | |
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131 #if !SDL_HAPTIC_DISABLED |
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132 /* Initialize the haptic subsystem */ |
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133 if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) { |
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134 if (SDL_HapticInit() < 0) { |
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135 return (-1); |
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136 } |
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137 SDL_initialized |= SDL_INIT_HAPTIC; |
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138 } |
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139 #else |
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140 if (flags & SDL_INIT_HAPTIC) { |
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141 SDL_SetError("SDL not built with haptic (force feedback) support"); |
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142 return (-1); |
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143 } |
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144 #endif |
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145 return (0); |
0 | 146 } |
147 | |
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148 int |
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149 SDL_Init(Uint32 flags) |
0 | 150 { |
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151 if (SDL_AssertionsInit() < 0) { |
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152 return -1; |
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153 } |
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154 |
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155 /* Clear the error message */ |
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156 SDL_ClearError(); |
0 | 157 |
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158 #if defined(__WIN32__) |
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159 if (SDL_HelperWindowCreate() < 0) { |
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160 return -1; |
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161 } |
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162 #endif |
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163 |
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164 /* Initialize the desired subsystems */ |
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165 if (SDL_InitSubSystem(flags) < 0) { |
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166 return (-1); |
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167 } |
0 | 168 |
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169 /* Everything is initialized */ |
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170 if (!(flags & SDL_INIT_NOPARACHUTE)) { |
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171 SDL_InstallParachute(); |
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172 } |
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173 |
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174 return (0); |
0 | 175 } |
176 | |
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177 void |
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178 SDL_QuitSubSystem(Uint32 flags) |
0 | 179 { |
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180 /* Shut down requested initialized subsystems */ |
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181 #if !SDL_JOYSTICK_DISABLED |
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182 if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) { |
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183 SDL_JoystickQuit(); |
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184 SDL_initialized &= ~SDL_INIT_JOYSTICK; |
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185 } |
0 | 186 #endif |
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187 #if !SDL_HAPTIC_DISABLED |
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188 if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) { |
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189 SDL_HapticQuit(); |
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190 SDL_initialized &= ~SDL_INIT_HAPTIC; |
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191 } |
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192 #endif |
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193 #if !SDL_TIMERS_DISABLED |
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194 if ((flags & SDL_initialized & SDL_INIT_TIMER)) { |
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195 SDL_TimerQuit(); |
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196 SDL_initialized &= ~SDL_INIT_TIMER; |
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197 } |
0 | 198 #endif |
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199 #if !SDL_AUDIO_DISABLED |
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200 if ((flags & SDL_initialized & SDL_INIT_AUDIO)) { |
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201 SDL_AudioQuit(); |
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202 SDL_initialized &= ~SDL_INIT_AUDIO; |
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203 } |
0 | 204 #endif |
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205 #if !SDL_VIDEO_DISABLED |
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206 if ((flags & SDL_initialized & SDL_INIT_VIDEO)) { |
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207 SDL_VideoQuit(); |
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208 SDL_initialized &= ~SDL_INIT_VIDEO; |
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209 } |
0 | 210 #endif |
211 } | |
212 | |
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213 Uint32 |
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214 SDL_WasInit(Uint32 flags) |
0 | 215 { |
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216 if (!flags) { |
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217 flags = SDL_INIT_EVERYTHING; |
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218 } |
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219 return (SDL_initialized & flags); |
0 | 220 } |
221 | |
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222 void |
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223 SDL_Quit(void) |
0 | 224 { |
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225 /* Quit all subsystems */ |
1190 | 226 #ifdef DEBUG_BUILD |
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227 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); |
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228 fflush(stdout); |
1190 | 229 #endif |
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230 |
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231 #if defined(__WIN32__) |
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232 SDL_HelperWindowDestroy(); |
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233 #endif |
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234 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
0 | 235 |
236 #ifdef CHECK_LEAKS | |
1190 | 237 #ifdef DEBUG_BUILD |
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238 printf("[SDL_Quit] : CHECK_LEAKS\n"); |
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239 fflush(stdout); |
1190 | 240 #endif |
241 | |
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242 /* !!! FIXME: make this an assertion. */ |
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243 /* Print the number of surfaces not freed */ |
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244 if (surfaces_allocated != 0) { |
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245 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", |
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246 surfaces_allocated); |
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247 } |
0 | 248 #endif |
1190 | 249 #ifdef DEBUG_BUILD |
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250 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); |
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251 fflush(stdout); |
1190 | 252 #endif |
0 | 253 |
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254 /* Uninstall any parachute signal handlers */ |
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255 SDL_UninstallParachute(); |
397 | 256 |
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257 SDL_AssertionsQuit(); |
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258 |
1190 | 259 #ifdef DEBUG_BUILD |
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260 printf("[SDL_Quit] : Returning!\n"); |
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261 fflush(stdout); |
1190 | 262 #endif |
263 | |
0 | 264 } |
265 | |
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266 /* Get the library version number */ |
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267 void |
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268 SDL_GetVersion(SDL_version * ver) |
0 | 269 { |
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270 SDL_VERSION(ver); |
0 | 271 } |
272 | |
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273 /* Get the library source revision */ |
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274 const char * |
2996 | 275 SDL_GetRevision(void) |
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276 { |
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277 return SDL_REVISION; |
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278 } |
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279 |
3319 | 280 /* Get the name of the platform */ |
281 const char * | |
282 SDL_GetPlatform() | |
283 { | |
284 #if __AIX__ | |
285 return "AIX"; | |
286 #elif __HAIKU__ | |
287 /* Haiku must appear here before BeOS, since it also defines __BEOS__ */ | |
288 return "Haiku"; | |
289 #elif __BEOS__ | |
290 return "BeOS"; | |
291 #elif __BSDI__ | |
292 return "BSDI"; | |
293 #elif __DREAMCAST__ | |
294 return "Dreamcast"; | |
295 #elif __FREEBSD__ | |
296 return "FreeBSD"; | |
297 #elif __HPUX__ | |
298 return "HP-UX"; | |
299 #elif __IRIX__ | |
300 return "Irix"; | |
301 #elif __LINUX__ | |
302 return "Linux"; | |
303 #elif __MINT__ | |
304 return "Atari MiNT"; | |
305 #elif __MACOS__ | |
306 return "MacOS Classic"; | |
307 #elif __MACOSX__ | |
308 return "Mac OS X"; | |
309 #elif __NETBSD__ | |
310 return "NetBSD"; | |
311 #elif __OPENBSD__ | |
312 return "OpenBSD"; | |
313 #elif __OS2__ | |
314 return "OS/2"; | |
315 #elif __OSF__ | |
316 return "OSF/1"; | |
317 #elif __QNXNTO__ | |
318 return "QNX Neutrino"; | |
319 #elif __RISCOS__ | |
320 return "RISC OS"; | |
321 #elif __SOLARIS__ | |
322 return "Solaris"; | |
323 #elif __WIN32__ | |
324 #ifdef _WIN32_WCE | |
325 return "Windows CE"; | |
326 #else | |
327 return "Windows"; | |
328 #endif | |
329 #elif __IPHONEOS__ | |
330 return "iPhone OS"; | |
331 #else | |
332 return "Unknown (see SDL_platform.h)"; | |
333 #endif | |
334 } | |
335 | |
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336 #if defined(__WIN32__) |
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337 |
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338 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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339 /* Need to include DllMain() on Watcom C for some reason.. */ |
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340 #define WIN32_LEAN_AND_MEAN |
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341 #include <windows.h> |
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342 |
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343 BOOL APIENTRY |
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344 _DllMainCRTStartup(HANDLE hModule, |
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345 DWORD ul_reason_for_call, LPVOID lpReserved) |
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346 { |
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347 switch (ul_reason_for_call) { |
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348 case DLL_PROCESS_ATTACH: |
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349 case DLL_THREAD_ATTACH: |
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350 case DLL_THREAD_DETACH: |
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351 case DLL_PROCESS_DETACH: |
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352 break; |
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353 } |
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354 return TRUE; |
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355 } |
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356 #endif /* building DLL with Watcom C */ |
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357 |
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358 #endif /* __WIN32__ */ |
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359 |
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360 /* vi: set ts=4 sw=4 expandtab: */ |