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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 | 0a45995a7fc3 |
children | 00e7c6b7eb03 |
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To compile and install SDL: 1. Run './configure; make; make install' If you are compiling for Windows using gcc, read the FAQ at: http://www.libsdl.org/faq.php?action=listentries&category=4#42 If you are compiling using Visual C++ on Win32, you should read the file VisualC.html 2. Look at the example programs in ./test, and check out the HTML documentation in ./docs to see how to use the SDL library. 3. Join the SDL developer mailing list by sending E-mail to sdl-request@libsdl.org and put "subscribe" in the subject of the message. Or alternatively you can use the web interface: http://www.libsdl.org/mailing-list.php That's it! Sam Lantinga <slouken@libsdl.org>