Mercurial > sdl-ios-xcode
annotate docs/html/sdlcondwaittimeout.html @ 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> |
|---|---|
| date | Tue, 21 Nov 2006 23:17:00 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_CondWaitTimeout</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Multi-threaded Programming" | |
| 14 HREF="thread.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_CondWait" | |
| 17 HREF="sdlcondwait.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="Time" | |
| 20 HREF="time.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
31 SUMMARY="Header navigation table" |
| 0 | 32 WIDTH="100%" |
| 33 BORDER="0" | |
| 34 CELLPADDING="0" | |
| 35 CELLSPACING="0" | |
| 36 ><TR | |
| 37 ><TH | |
| 38 COLSPAN="3" | |
| 39 ALIGN="center" | |
| 40 >SDL Library Documentation</TH | |
| 41 ></TR | |
| 42 ><TR | |
| 43 ><TD | |
| 44 WIDTH="10%" | |
| 45 ALIGN="left" | |
| 46 VALIGN="bottom" | |
| 47 ><A | |
| 48 HREF="sdlcondwait.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 ></TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="time.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><H1 | |
| 72 ><A | |
| 73 NAME="SDLCONDWAITTIMEOUT" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_CondWaitTimeout</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN8393" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_CondWaitTimeout -- Wait on a condition variable, with timeout</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN8396" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
94 NAME="AEN8397" |
| 0 | 95 ></A |
| 96 ><P | |
| 97 ></P | |
| 98 ><PRE | |
| 99 CLASS="FUNCSYNOPSISINFO" | |
| 100 >#include "SDL.h" | |
| 101 #include "SDL_thread.h"</PRE | |
| 102 ><P | |
| 103 ><CODE | |
| 104 ><CODE | |
| 105 CLASS="FUNCDEF" | |
| 106 >int <B | |
| 107 CLASS="FSFUNC" | |
| 108 >SDL_CondWaitTimeout</B | |
| 109 ></CODE | |
| 110 >(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms);</CODE | |
| 111 ></P | |
| 112 ><P | |
| 113 ></P | |
| 114 ></DIV | |
| 115 ></DIV | |
| 116 ><DIV | |
| 117 CLASS="REFSECT1" | |
| 118 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
119 NAME="AEN8403" |
| 0 | 120 ></A |
| 121 ><H2 | |
| 122 >Description</H2 | |
| 123 ><P | |
| 124 >Wait on the condition variable <TT | |
| 125 CLASS="PARAMETER" | |
| 126 ><I | |
| 127 >cond</I | |
| 128 ></TT | |
| 129 > for, at most, <TT | |
| 130 CLASS="PARAMETER" | |
| 131 ><I | |
| 132 >ms</I | |
| 133 ></TT | |
| 134 > milliseconds. <TT | |
| 135 CLASS="PARAMETER" | |
| 136 ><I | |
| 137 >mut</I | |
| 138 ></TT | |
| 139 > is unlocked so it must be locked when the function is called. Returns <TT | |
| 140 CLASS="LITERAL" | |
| 141 >SDL_MUTEX_TIMEDOUT</TT | |
| 142 > if the condition is not signalled in the allotted time, <SPAN | |
| 143 CLASS="RETURNVALUE" | |
| 144 >0</SPAN | |
| 145 > if it was signalled or <SPAN | |
| 146 CLASS="RETURNVALUE" | |
| 147 >-1</SPAN | |
| 148 > on an error.</P | |
| 149 ></DIV | |
| 150 ><DIV | |
| 151 CLASS="REFSECT1" | |
| 152 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
153 NAME="AEN8412" |
| 0 | 154 ></A |
| 155 ><H2 | |
| 156 >See Also</H2 | |
| 157 ><P | |
| 158 ><A | |
| 159 HREF="sdlcondwait.html" | |
| 160 ><TT | |
| 161 CLASS="FUNCTION" | |
| 162 >SDL_CondWait</TT | |
| 163 ></A | |
| 164 ></P | |
| 165 ></DIV | |
| 166 ><DIV | |
| 167 CLASS="NAVFOOTER" | |
| 168 ><HR | |
| 169 ALIGN="LEFT" | |
| 170 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
171 SUMMARY="Footer navigation table" |
| 0 | 172 WIDTH="100%" |
| 173 BORDER="0" | |
| 174 CELLPADDING="0" | |
| 175 CELLSPACING="0" | |
| 176 ><TR | |
| 177 ><TD | |
| 178 WIDTH="33%" | |
| 179 ALIGN="left" | |
| 180 VALIGN="top" | |
| 181 ><A | |
| 182 HREF="sdlcondwait.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
183 ACCESSKEY="P" |
| 0 | 184 >Prev</A |
| 185 ></TD | |
| 186 ><TD | |
| 187 WIDTH="34%" | |
| 188 ALIGN="center" | |
| 189 VALIGN="top" | |
| 190 ><A | |
| 191 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
192 ACCESSKEY="H" |
| 0 | 193 >Home</A |
| 194 ></TD | |
| 195 ><TD | |
| 196 WIDTH="33%" | |
| 197 ALIGN="right" | |
| 198 VALIGN="top" | |
| 199 ><A | |
| 200 HREF="time.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
201 ACCESSKEY="N" |
| 0 | 202 >Next</A |
| 203 ></TD | |
| 204 ></TR | |
| 205 ><TR | |
| 206 ><TD | |
| 207 WIDTH="33%" | |
| 208 ALIGN="left" | |
| 209 VALIGN="top" | |
| 210 >SDL_CondWait</TD | |
| 211 ><TD | |
| 212 WIDTH="34%" | |
| 213 ALIGN="center" | |
| 214 VALIGN="top" | |
| 215 ><A | |
| 216 HREF="thread.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
217 ACCESSKEY="U" |
| 0 | 218 >Up</A |
| 219 ></TD | |
| 220 ><TD | |
| 221 WIDTH="33%" | |
| 222 ALIGN="right" | |
| 223 VALIGN="top" | |
| 224 >Time</TD | |
| 225 ></TR | |
| 226 ></TABLE | |
| 227 ></DIV | |
| 228 ></BODY | |
| 229 ></HTML | |
| 230 > |