Mercurial > sdl-ios-xcode

view src/video/default_cursor.h @ 689:5bb080d35049

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Date: Tue, 19 Aug 2003 17:57:00 +0200 From: Stephane Marchesin Subject: Re: [SDL] [patch] MMX alpha blit patches with MMX detection I think everything is correct now. I've done as much testing as I could, but some real-world testing wouldn't hurt, I think. The patch is here : http://icps.u-strasbg.fr/~marchesin/sdl_mmxblit.patch If you do byte-by-byte comparison of the output between C and MMX functions, you'll notice that the results for 555 and 565 RGB alpha blits aren't exactly the same. This is because MMX functions for 555 and 565 RGB have an higher accuracy. If you want the exact same behaviour that's possible by masking the three lower alpha bits in the MMX functions. Just ask ! I removed one MMX function because after I fixed it to match its C equivalent, it revealed to be slower than the C version on a PIII (although a bit faster on an Athlon XP). I've also added MMX and PIII replacements for SDL_memcpy. Those provide some speed up in testvidinfo -benchmark (at least for me, under linux & X11).
author Sam Lantinga <slouken@libsdl.org>
date Fri, 22 Aug 2003 05:51:19 +0000
parents f6ffac90895c
children b8d311d90021
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 * Default cursor - it happens to be the Mac cursor, but could be anything   */

#define DEFAULT_CWIDTH	16
#define DEFAULT_CHEIGHT	16
#define DEFAULT_CHOTX	0
#define DEFAULT_CHOTY	0

/* Added a real MacOS cursor, at the request of Luc-Olivier de Charrière */
#define USE_MACOS_CURSOR

#ifdef USE_MACOS_CURSOR

static unsigned char default_cdata[] =
{
 0x00,0x00,
 0x40,0x00,
 0x60,0x00,
 0x70,0x00,
 0x78,0x00,
 0x7C,0x00,
 0x7E,0x00,
 0x7F,0x00,
 0x7F,0x80,
 0x7C,0x00,
 0x6C,0x00,
 0x46,0x00,
 0x06,0x00,
 0x03,0x00,
 0x03,0x00,
 0x00,0x00
};
static unsigned char default_cmask[] =
{
 0xC0,0x00,
 0xE0,0x00,
 0xF0,0x00,
 0xF8,0x00,
 0xFC,0x00,
 0xFE,0x00,
 0xFF,0x00,
 0xFF,0x80,
 0xFF,0xC0,
 0xFF,0xE0,
 0xFE,0x00,
 0xEF,0x00,
 0xCF,0x00,
 0x87,0x80,
 0x07,0x80,
 0x03,0x00
};

#else

static unsigned char default_cdata[] =
{
 0x00,0x00,
 0x40,0x00,
 0x60,0x00,
 0x70,0x00,
 0x78,0x00,
 0x7C,0x00,
 0x7E,0x00,
 0x7F,0x00,
 0x7F,0x80,
 0x7C,0x00,
 0x6C,0x00,
 0x46,0x00,
 0x06,0x00,
 0x03,0x00,
 0x03,0x00,
 0x00,0x00
};
static unsigned char default_cmask[] =
{
 0x40,0x00,
 0xE0,0x00,
 0xF0,0x00,
 0xF8,0x00,
 0xFC,0x00,
 0xFE,0x00,
 0xFF,0x00,
 0xFF,0x80,
 0xFF,0xC0,
 0xFF,0x80,
 0xFE,0x00,
 0xEF,0x00,
 0x4F,0x00,
 0x07,0x80,
 0x07,0x80,
 0x03,0x00
};

#endif /* TRUE_MACINTOSH_CURSOR */