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Date: Mon, 13 Dec 2004 21:28:18 -0500 From: Jonathan Atkins Subject: [SDL] SDL_SaveBMP width bugfix this fixes the pitch versus width difference that can happen (especially for 8bit and 24bit (with the exact RGBAmasks) surfaces) when you use SDL_SaveBMP. The problem was the pitch was used instead of the width, which in some cases is much wider than the screen area you really want to save...making for ugly crud on the saved image borders. This code has been tested with & without pitch overhangs...and with the right masks for 24 bit surfaces. I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
author Sam Lantinga <slouken@libsdl.org>
date Tue, 14 Dec 2004 06:20:49 +0000
parents 74212992fb08
children 14717b52abc0
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<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN">
<HTML
><HEAD
><TITLE
>Introduction</TITLE
>
</HEAD
><BODY
BGCOLOR="#FFF8DC"
TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
ALINK="#ff0000"
><DIV
CLASS="NAVHEADER"
>
<HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="PREFACE"
><H1
><A
NAME="AEN8"
>Introduction</A
></H1
><P
>This library is designed to make it easy to write games that run on Linux,
Win32 and BeOS using the various native high-performance media interfaces,
(for video, audio, etc) and presenting a single source-code level API to
your application.  This is a fairly low level API, but using this, completely
portable applications can be written with a great deal of flexibility.</P
><P
>The library is loaded as a dynamically linked library on its native
platform, and is currently compiled natively for Linux, compiled for
Win32 using a Linux hosted GCC
<A
HREF="http://www.libsdl.org/Xmingw32/"
TARGET="_top"
>cross-compilation</A
>
environment, and compiled using the EGCS C++ compiler under BeOS.</P
><P
>An introduction to SDL can be found online at:
<A
HREF="http://www.libsdl.org/intro/toc.html"
TARGET="_top"
>http://www.libsdl.org/intro/</A
>&#13;</P
><P
>There are code examples on each of the main library pages, and there are
fully fleshed example C++ classes and programs in the examples archive,
available on the
<A
HREF="http://www.libsdl.org/download.html"
TARGET="_top"
>SDL download page</A
>.</P
><P
>For an introduction to basic multi-media programming concepts, you might try
some of the following links:
<P
></P
><UL
><LI
><P
><A
HREF="http://www.ziron.com/links/"
TARGET="_top"
>Game Programming Links</A
></P
></LI
><LI
><P
><A
HREF="http://developer.dungeon-crawl.com/"
TARGET="_top"
>Game Developer Search Engine</A
></P
></LI
></UL
></P
><P
>Enjoy!</P
><P
>&nbsp;&nbsp;&nbsp; Sam Lantinga
<TT
CLASS="EMAIL"
>&#60;<A
HREF="mailto:slouken@libsdl.org"
><A
HREF="mailto:slouken@libsdl.org"
TARGET="_top"
>slouken@libsdl.org</A
></A
>&#62;</TT
></P
>
<P>
<br><br><HR>
<H1>Table of Contents</H1>
<UL>
<LI><A HREF="html/index.html">Full Table of Contents</A></LI>
<LI><A HREF="html/guide.html">The SDL Guide</A></LI>
<LI><A HREF="html/reference.html">The SDL Reference</A></LI>
<UL>
<LI><A HREF="html/general.html">Initialization</A></LI>
<LI><A HREF="html/video.html">Video</A></LI>
<LI><A HREF="html/wm.html">Window Manager</A></LI>
<LI><A HREF="html/event.html">Event Handling</A></LI>
<LI><A HREF="html/joystick.html">Joystick</A></LI>
<LI><A HREF="html/audio.html">Audio</A></LI>
<LI><A HREF="html/cdrom.html">CDROM</A></LI>
<LI><A HREF="html/thread.html">Threads</A></LI>
<LI><A HREF="html/time.html">Timers</A></LI>
</UL>
</UL>
</DIV
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></HTML
>