Mercurial > sdl-ios-xcode
view strip_fPIC.sh @ 688:c0522010bb6d
Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
From: "Mattias Engdeg?rd"
Subject: bug in SDL_GetRGB/GetRGBA
There's an embarrassing bug in GetRGB/GetRGBA which apparently has been there
for years. It incorrectly converts colours with < 8 bits/channel.
It came to my attention today in #sdl.
What it does now is (for each channel):
rv = (pixel & fmt->Rmask) >> fmt->Rshift;
*r = (rv << fmt->Rloss) + (rv >> (8 - fmt->Rloss));
which is wrong; the last line should be
*r = (rv << fmt->Rloss) + (rv >> (8 - (fmt->Rloss << 1)));
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 12 Aug 2003 15:17:20 +0000 |
parents | 48c34d68918e |
children |
line wrap: on
line source
#!/bin/sh # # libtool assumes that the compiler can handle the -fPIC flag # This isn't always true (for example, nasm can't handle it) command="" while [ $# -gt 0 ]; do case "$1" in -?PIC) # Ignore -fPIC and -DPIC options ;; *) command="$command $1" ;; esac shift done echo $command exec $command