Mercurial > sdl-ios-xcode
view src/main/macos/exports/gendef.pl @ 3899:081aecdb0911 SDL-1.2
From: Gabriel Gambetta
To: SDL Mailing List <sdl@libsdl.org>
Date: Fri, 17 Nov 2006 00:39:29 -0200
Subject: [SDL] Alpha blending bug - fixed?
It turns out mm5 never got the correct value. This failed :
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (sf->Ashift) );
mm5 got 0xFF000018 instead of 0x00000018. However I did this :
Uint32 ashift = sf->Ashift;
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (ashift) );
and everything worked fine.
The only thing I could find out was that ashift is 32-bit aligned but
sf->Ashift isn't:
printf("ashift %8X [%d]\n", &ashift, (int)(&ashift) % 4);
printf("sf->Ashift %8X [%d]\n", &sf->Ashift, (int)(&sf->Ashift) % 4);
ashift at BFF0E0C4 [0]
sf->Ashift at 08AFB9CD [1]
Could this be the problem? If it is, the fix is extremely trivial.
Should I submit a patch?
--Gabriel
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Tue, 21 Nov 2006 23:17:00 +0000 |
parents | 84cecd0b64b4 |
children | da1ef6acde9e |
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#!/usr/bin/perl # # Program to take a set of header files and generate DLL export definitions # Special exports to ignore for this platform while ( ($file = shift(@ARGV)) ) { if ( ! defined(open(FILE, $file)) ) { warn "Couldn't open $file: $!\n"; next; } $printed_header = 0; $file =~ s,.*/,,; while (<FILE>) { if ( / DECLSPEC.* SDLCALL ([^\s\(]+)/ ) { if ( not $exclude{$1} ) { print "\t$1\n"; } } } close(FILE); } # Special exports to include for this platform print "\tSDL_putenv\n"; print "\tSDL_getenv\n"; print "\tSDL_qsort\n"; print "\tSDL_revcpy\n"; print "\tSDL_strlcpy\n"; print "\tSDL_strlcat\n"; print "\tSDL_strdup\n"; print "\tSDL_strrev\n"; print "\tSDL_strupr\n"; print "\tSDL_strlwr\n"; print "\tSDL_ltoa\n"; print "\tSDL_ultoa\n"; print "\tSDL_strcasecmp\n"; print "\tSDL_strncasecmp\n"; print "\tSDL_snprintf\n"; print "\tSDL_vsnprintf\n"; print "\tSDL_iconv\n"; print "\tSDL_iconv_string\n"; print "\tSDL_InitQuickDraw\n";