Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexv.html @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 08 Jan 2006 21:18:15 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_mutexV</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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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_mutexP" | |
| 17 HREF="sdlmutexp.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_CreateSemaphore" | |
| 20 HREF="sdlcreatesemaphore.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 | |
|
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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="sdlmutexp.html" | |
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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="sdlcreatesemaphore.html" | |
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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="SDLMUTEXV" | |
|
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74 ></A |
|
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75 >SDL_mutexV</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7905" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_mutexV -- Unlock a mutex</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN7908" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN7909" |
| 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_mutexV</B | |
| 109 ></CODE | |
| 110 >(SDL_mutex *mutex);</CODE | |
| 111 ></P | |
| 112 ><P | |
| 113 ></P | |
| 114 ></DIV | |
| 115 ></DIV | |
| 116 ><DIV | |
| 117 CLASS="REFSECT1" | |
| 118 ><A | |
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119 NAME="AEN7915" |
| 0 | 120 ></A |
| 121 ><H2 | |
| 122 >Description</H2 | |
| 123 ><P | |
| 124 >Unlocks the <TT | |
| 125 CLASS="PARAMETER" | |
| 126 ><I | |
| 127 >mutex</I | |
| 128 ></TT | |
| 129 >, which was previously created with <A | |
| 130 HREF="sdlcreatemutex.html" | |
| 131 ><TT | |
| 132 CLASS="FUNCTION" | |
| 133 >SDL_CreateMutex</TT | |
| 134 ></A | |
| 135 >. Returns <SPAN | |
| 136 CLASS="RETURNVALUE" | |
| 137 >0</SPAN | |
| 138 > on success, or <SPAN | |
| 139 CLASS="RETURNVALUE" | |
| 140 >-1</SPAN | |
| 141 > on an error.</P | |
| 142 ><P | |
| 143 >SDL also defines a macro <TT | |
| 144 CLASS="LITERAL" | |
| 145 >#define SDL_UnlockMutex(m) SDL_mutexV(m)</TT | |
| 146 >.</P | |
| 147 ></DIV | |
| 148 ><DIV | |
| 149 CLASS="REFSECT1" | |
| 150 ><A | |
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151 NAME="AEN7925" |
| 0 | 152 ></A |
| 153 ><H2 | |
| 154 >See Also</H2 | |
| 155 ><P | |
| 156 ><A | |
| 157 HREF="sdlcreatemutex.html" | |
| 158 ><TT | |
| 159 CLASS="FUNCTION" | |
| 160 >SDL_CreateMutex</TT | |
| 161 ></A | |
| 162 >, | |
| 163 <A | |
| 164 HREF="sdlmutexp.html" | |
| 165 ><TT | |
| 166 CLASS="FUNCTION" | |
| 167 >SDL_mutexP</TT | |
| 168 ></A | |
| 169 ></P | |
| 170 ></DIV | |
| 171 ><DIV | |
| 172 CLASS="NAVFOOTER" | |
| 173 ><HR | |
| 174 ALIGN="LEFT" | |
| 175 WIDTH="100%"><TABLE | |
|
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176 SUMMARY="Footer navigation table" |
| 0 | 177 WIDTH="100%" |
| 178 BORDER="0" | |
| 179 CELLPADDING="0" | |
| 180 CELLSPACING="0" | |
| 181 ><TR | |
| 182 ><TD | |
| 183 WIDTH="33%" | |
| 184 ALIGN="left" | |
| 185 VALIGN="top" | |
| 186 ><A | |
| 187 HREF="sdlmutexp.html" | |
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803
355632dca928
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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188 ACCESSKEY="P" |
| 0 | 189 >Prev</A |
| 190 ></TD | |
| 191 ><TD | |
| 192 WIDTH="34%" | |
| 193 ALIGN="center" | |
| 194 VALIGN="top" | |
| 195 ><A | |
| 196 HREF="index.html" | |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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197 ACCESSKEY="H" |
| 0 | 198 >Home</A |
| 199 ></TD | |
| 200 ><TD | |
| 201 WIDTH="33%" | |
| 202 ALIGN="right" | |
| 203 VALIGN="top" | |
| 204 ><A | |
| 205 HREF="sdlcreatesemaphore.html" | |
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803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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206 ACCESSKEY="N" |
| 0 | 207 >Next</A |
| 208 ></TD | |
| 209 ></TR | |
| 210 ><TR | |
| 211 ><TD | |
| 212 WIDTH="33%" | |
| 213 ALIGN="left" | |
| 214 VALIGN="top" | |
| 215 >SDL_mutexP</TD | |
| 216 ><TD | |
| 217 WIDTH="34%" | |
| 218 ALIGN="center" | |
| 219 VALIGN="top" | |
| 220 ><A | |
| 221 HREF="thread.html" | |
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355632dca928
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parents:
181
diff
changeset
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222 ACCESSKEY="U" |
| 0 | 223 >Up</A |
| 224 ></TD | |
| 225 ><TD | |
| 226 WIDTH="33%" | |
| 227 ALIGN="right" | |
| 228 VALIGN="top" | |
| 229 >SDL_CreateSemaphore</TD | |
| 230 ></TR | |
| 231 ></TABLE | |
| 232 ></DIV | |
| 233 ></BODY | |
| 234 ></HTML | |
| 235 > |