Mercurial > sdl-ios-xcode
annotate include/SDL_syswm.h @ 3899:081aecdb0911 SDL-1.2
From: Gabriel Gambetta
To: SDL Mailing List <sdl@libsdl.org>
Date: Fri, 17 Nov 2006 00:39:29 -0200
Subject: [SDL] Alpha blending bug - fixed?
It turns out mm5 never got the correct value. This failed :
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (sf->Ashift) );
mm5 got 0xFF000018 instead of 0x00000018. However I did this :
Uint32 ashift = sf->Ashift;
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (ashift) );
and everything worked fine.
The only thing I could find out was that ashift is 32-bit aligned but
sf->Ashift isn't:
printf("ashift %8X [%d]\n", &ashift, (int)(&ashift) % 4);
printf("sf->Ashift %8X [%d]\n", &sf->Ashift, (int)(&sf->Ashift) % 4);
ashift at BFF0E0C4 [0]
sf->Ashift at 08AFB9CD [1]
Could this be the problem? If it is, the fix is extremely trivial.
Should I submit a patch?
--Gabriel
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Tue, 21 Nov 2006 23:17:00 +0000 |
parents | be84332e761e |
children | a1b03ba2fcd0 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 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 | |
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20 slouken@libsdl.org |
0 | 21 */ |
22 | |
23 /* Include file for SDL custom system window manager hooks */ | |
24 | |
25 #ifndef _SDL_syswm_h | |
26 #define _SDL_syswm_h | |
27 | |
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28 #include "SDL_stdinc.h" |
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29 #include "SDL_error.h" |
0 | 30 #include "SDL_version.h" |
31 | |
32 #include "begin_code.h" | |
33 /* Set up for C function definitions, even when using C++ */ | |
34 #ifdef __cplusplus | |
35 extern "C" { | |
36 #endif | |
37 | |
38 /* Your application has access to a special type of event 'SDL_SYSWMEVENT', | |
39 which contains window-manager specific information and arrives whenever | |
40 an unhandled window event occurs. This event is ignored by default, but | |
41 you can enable it with SDL_EventState() | |
42 */ | |
43 #ifdef SDL_PROTOTYPES_ONLY | |
44 struct SDL_SysWMinfo; | |
45 typedef struct SDL_SysWMinfo SDL_SysWMinfo; | |
46 #else | |
47 | |
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48 /* This is the structure for custom window manager events */ |
1626 | 49 #if defined(SDL_VIDEO_DRIVER_X11) |
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50 #if defined(__APPLE__) && defined(__MACH__) |
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51 /* conflicts with Quickdraw.h */ |
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52 #define Cursor X11Cursor |
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53 #endif |
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54 |
0 | 55 #include <X11/Xlib.h> |
56 #include <X11/Xatom.h> | |
57 | |
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58 #if defined(__APPLE__) && defined(__MACH__) |
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59 /* matches the re-define above */ |
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60 #undef Cursor |
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61 #endif |
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62 |
0 | 63 /* These are the various supported subsystems under UNIX */ |
64 typedef enum { | |
65 SDL_SYSWM_X11 | |
66 } SDL_SYSWM_TYPE; | |
67 | |
68 /* The UNIX custom event structure */ | |
69 struct SDL_SysWMmsg { | |
70 SDL_version version; | |
71 SDL_SYSWM_TYPE subsystem; | |
72 union { | |
73 XEvent xevent; | |
74 } event; | |
75 }; | |
76 | |
77 /* The UNIX custom window manager information structure. | |
78 When this structure is returned, it holds information about which | |
79 low level system it is using, and will be one of SDL_SYSWM_TYPE. | |
80 */ | |
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81 typedef struct SDL_SysWMinfo { |
0 | 82 SDL_version version; |
83 SDL_SYSWM_TYPE subsystem; | |
84 union { | |
85 struct { | |
86 Display *display; /* The X11 display */ | |
87 Window window; /* The X11 display window */ | |
88 /* These locking functions should be called around | |
3872 | 89 any X11 functions using the display variable, |
90 but not the gfxdisplay variable. | |
0 | 91 They lock the event thread, so should not be |
92 called around event functions or from event filters. | |
93 */ | |
94 void (*lock_func)(void); | |
95 void (*unlock_func)(void); | |
96 | |
97 /* Introduced in SDL 1.0.2 */ | |
98 Window fswindow; /* The X11 fullscreen window */ | |
99 Window wmwindow; /* The X11 managed input window */ | |
3872 | 100 |
101 /* Introduced in SDL 1.2.12 */ | |
102 Display *gfxdisplay; /* The X11 display to which rendering is done */ | |
0 | 103 } x11; |
104 } info; | |
105 } SDL_SysWMinfo; | |
106 | |
1626 | 107 #elif defined(SDL_VIDEO_DRIVER_NANOX) |
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108 #include <microwin/nano-X.h> |
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109 |
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110 /* The generic custom event structure */ |
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111 struct SDL_SysWMmsg { |
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112 SDL_version version; |
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113 int data; |
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114 }; |
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115 |
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116 /* The windows custom window manager information structure */ |
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117 typedef struct SDL_SysWMinfo { |
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118 SDL_version version ; |
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119 GR_WINDOW_ID window ; /* The display window */ |
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120 } SDL_SysWMinfo; |
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121 |
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122 #elif defined(SDL_VIDEO_DRIVER_WINDIB) || defined(SDL_VIDEO_DRIVER_DDRAW) || defined(SDL_VIDEO_DRIVER_GAPI) |
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123 #define WIN32_LEAN_AND_MEAN |
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124 #include <windows.h> |
0 | 125 |
126 /* The windows custom event structure */ | |
127 struct SDL_SysWMmsg { | |
128 SDL_version version; | |
129 HWND hwnd; /* The window for the message */ | |
130 UINT msg; /* The type of message */ | |
131 WPARAM wParam; /* WORD message parameter */ | |
132 LPARAM lParam; /* LONG message parameter */ | |
133 }; | |
134 | |
135 /* The windows custom window manager information structure */ | |
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136 typedef struct SDL_SysWMinfo { |
0 | 137 SDL_version version; |
138 HWND window; /* The Win32 display window */ | |
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139 HGLRC hglrc; /* The OpenGL context, if any */ |
0 | 140 } SDL_SysWMinfo; |
141 | |
1626 | 142 #elif defined(SDL_VIDEO_DRIVER_RISCOS) |
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143 |
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144 /* RISC OS custom event structure */ |
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145 struct SDL_SysWMmsg { |
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146 SDL_version version; |
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147 int eventCode; /* The window for the message */ |
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148 int pollBlock[64]; |
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149 }; |
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150 |
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151 /* The RISC OS custom window manager information structure */ |
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152 typedef struct SDL_SysWMinfo { |
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153 SDL_version version; |
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154 int wimpVersion; /* Wimp version running under */ |
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155 int taskHandle; /* The RISC OS task handle */ |
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156 int window; /* The RISC OS display window */ |
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157 } SDL_SysWMinfo; |
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158 |
1626 | 159 #elif defined(SDL_VIDEO_DRIVER_PHOTON) |
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160 #include <sys/neutrino.h> |
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161 #include <Ph.h> |
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162 |
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163 /* The QNX custom event structure */ |
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164 struct SDL_SysWMmsg { |
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165 SDL_version version; |
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166 int data; |
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167 }; |
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168 |
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169 /* The QNX custom window manager information structure */ |
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170 typedef struct SDL_SysWMinfo { |
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171 SDL_version version; |
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172 int data; |
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173 } SDL_SysWMinfo; |
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174 |
0 | 175 #else |
176 | |
177 /* The generic custom event structure */ | |
178 struct SDL_SysWMmsg { | |
179 SDL_version version; | |
180 int data; | |
181 }; | |
182 | |
183 /* The generic custom window manager information structure */ | |
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184 typedef struct SDL_SysWMinfo { |
0 | 185 SDL_version version; |
186 int data; | |
187 } SDL_SysWMinfo; | |
188 | |
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189 #endif /* video driver type */ |
0 | 190 |
191 #endif /* SDL_PROTOTYPES_ONLY */ | |
192 | |
193 /* Function prototypes */ | |
194 /* | |
195 * This function gives you custom hooks into the window manager information. | |
196 * It fills the structure pointed to by 'info' with custom information and | |
197 * returns 1 if the function is implemented. If it's not implemented, or | |
198 * the version member of the 'info' structure is invalid, it returns 0. | |
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199 * |
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200 * You typically use this function like this: |
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201 * SDL_SysWMInfo info; |
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202 * SDL_VERSION(&info.version); |
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203 * if ( SDL_GetWMInfo(&info) ) { ... } |
0 | 204 */ |
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205 extern DECLSPEC int SDLCALL SDL_GetWMInfo(SDL_SysWMinfo *info); |
0 | 206 |
207 | |
208 /* Ends C function definitions when using C++ */ | |
209 #ifdef __cplusplus | |
210 } | |
211 #endif | |
212 #include "close_code.h" | |
213 | |
214 #endif /* _SDL_syswm_h */ |