view sdl-config.in @ 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 7e53d17ec798
children 674df5617bba
line wrap: on
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#!/bin/sh

prefix=@prefix@
exec_prefix=@exec_prefix@
exec_prefix_set=no

usage="\
Usage: sdl-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs] [--static-libs]"

if test $# -eq 0; then
      echo "${usage}" 1>&2
      exit 1
fi

while test $# -gt 0; do
  case "$1" in
  -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
  *) optarg= ;;
  esac

  case $1 in
    --prefix=*)
      prefix=$optarg
      if test $exec_prefix_set = no ; then
        exec_prefix=$optarg
      fi
      ;;
    --prefix)
      echo $prefix
      ;;
    --exec-prefix=*)
      exec_prefix=$optarg
      exec_prefix_set=yes
      ;;
    --exec-prefix)
      echo $exec_prefix
      ;;
    --version)
      echo @SDL_VERSION@
      ;;
    --cflags)
      echo -I@includedir@/SDL @SDL_CFLAGS@

      # The portable way of including SDL is #include "SDL.h"
      #if test @includedir@ != /usr/include ; then
      #    # Handle oddities in Win32 path handling (assumes prefix)
      #    prefix=`echo ${prefix} | sed 's,^//\([A-Z]\),\1:,'`
      #
      #    includes=-I@includedir@
      #fi
      #echo $includes -I@includedir@/SDL @SDL_CFLAGS@
      ;;
@ENABLE_SHARED_TRUE@    --libs)
@ENABLE_SHARED_TRUE@      libdirs="-L@libdir@ @SDL_RLD_FLAGS@"
@ENABLE_SHARED_TRUE@      echo $libdirs @SDL_LIBS@ @SHARED_SYSTEM_LIBS@
@ENABLE_SHARED_TRUE@      ;;
@ENABLE_STATIC_TRUE@@ENABLE_SHARED_TRUE@    --static-libs)
@ENABLE_STATIC_TRUE@@ENABLE_SHARED_FALSE@    --libs|--static-libs)
@ENABLE_STATIC_TRUE@      libdirs="-L@libdir@ @SDL_RLD_FLAGS@"
@ENABLE_STATIC_TRUE@      echo $libdirs @SDL_LIBS@ @STATIC_SYSTEM_LIBS@
@ENABLE_STATIC_TRUE@      ;;
    *)
      echo "${usage}" 1>&2
      exit 1
      ;;
  esac
  shift
done