Mercurial > sdl-ios-xcode
annotate docs/html/guideaboutsdldoc.html @ 997:3bf4103b2b89
Date: Sat, 27 Nov 2004 13:35:43 +0100
From: "Martin Bickel"
Subject: [SDL] Patch: fixing uninitilized palette
while running Valgrind over my application I found the following
problem in SDL:
The function MapNto1 allocates SDL_Color colors[256] but does not
initialize it.
SDL_DitherColors is then called which initialized the r, g and b
component, but not the 'unused' component of each color.
When Map1to1 is called from MapNto1, it runs a memcmp on the colors,
which also evaluates the unused component and therefor returns
differences much more often than necessary.
So the 'unused' component of SDL_Color should be initialized. This
patch does this by calling memset for the whole array in MapNto1 .
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 30 Nov 2004 14:28:20 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >About SDLdoc</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="Preface" | |
| 14 HREF="guidepreface.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="Preface" | |
| 17 HREF="guidepreface.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="Credits" | |
| 20 HREF="guidecredits.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="SECT1" | |
| 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="guidepreface.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 >Preface</TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="guidecredits.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 ><DIV | |
| 72 CLASS="SECT1" | |
| 73 ><H1 | |
| 74 CLASS="SECT1" | |
| 75 ><A | |
| 76 NAME="GUIDEABOUTSDLDOC" | |
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77 ></A |
|
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78 >About SDLdoc</H1 |
| 0 | 79 ><P |
|
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80 >SDLdoc (The SDL Documentation Project) was formed to completely rewrite the SDL documentation and to keep it continually up to date. The team consists completely of volunteers ranging from people working with SDL in their spare time to people who use SDL in their everyday working lives.</P |
| 0 | 81 ><P |
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82 >The latest version of this documentation can always be found here: http://sdldoc.csn.ul.ie Downloadable PS, man pages and html tarballs are available at http://sdldoc.csn.ul.ie/pub/</P |
| 0 | 83 ></DIV |
| 84 ><DIV | |
| 85 CLASS="NAVFOOTER" | |
| 86 ><HR | |
| 87 ALIGN="LEFT" | |
| 88 WIDTH="100%"><TABLE | |
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355632dca928
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89 SUMMARY="Footer navigation table" |
| 0 | 90 WIDTH="100%" |
| 91 BORDER="0" | |
| 92 CELLPADDING="0" | |
| 93 CELLSPACING="0" | |
| 94 ><TR | |
| 95 ><TD | |
| 96 WIDTH="33%" | |
| 97 ALIGN="left" | |
| 98 VALIGN="top" | |
| 99 ><A | |
| 100 HREF="guidepreface.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
101 ACCESSKEY="P" |
| 0 | 102 >Prev</A |
| 103 ></TD | |
| 104 ><TD | |
| 105 WIDTH="34%" | |
| 106 ALIGN="center" | |
| 107 VALIGN="top" | |
| 108 ><A | |
| 109 HREF="index.html" | |
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803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
110 ACCESSKEY="H" |
| 0 | 111 >Home</A |
| 112 ></TD | |
| 113 ><TD | |
| 114 WIDTH="33%" | |
| 115 ALIGN="right" | |
| 116 VALIGN="top" | |
| 117 ><A | |
| 118 HREF="guidecredits.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
119 ACCESSKEY="N" |
| 0 | 120 >Next</A |
| 121 ></TD | |
| 122 ></TR | |
| 123 ><TR | |
| 124 ><TD | |
| 125 WIDTH="33%" | |
| 126 ALIGN="left" | |
| 127 VALIGN="top" | |
| 128 >Preface</TD | |
| 129 ><TD | |
| 130 WIDTH="34%" | |
| 131 ALIGN="center" | |
| 132 VALIGN="top" | |
| 133 ><A | |
| 134 HREF="guidepreface.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
135 ACCESSKEY="U" |
| 0 | 136 >Up</A |
| 137 ></TD | |
| 138 ><TD | |
| 139 WIDTH="33%" | |
| 140 ALIGN="right" | |
| 141 VALIGN="top" | |
| 142 >Credits</TD | |
| 143 ></TR | |
| 144 ></TABLE | |
| 145 ></DIV | |
| 146 ></BODY | |
| 147 ></HTML | |
| 148 > |