Mercurial > sdl-ios-xcode

view src/video/fbcon/riva_regs.h @ 3899:081aecdb0911 SDL-1.2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 d910939febfa
children 782fd950bd46 a1b03ba2fcd0
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _RIVA_REGS_H
#define _RIVA_REGS_H

/* This information comes from the XFree86 NVidia hardware driver */

/* mapped_io register offsets */
#define PGRAPH_OFFSET	0x00400000
#define FIFO_OFFSET	0x00800000
#define ROP_OFFSET	FIFO_OFFSET+0x00000000
#define CLIP_OFFSET	FIFO_OFFSET+0x00002000
#define PATT_OFFSET	FIFO_OFFSET+0x00004000
#define PIXMAP_OFFSET	FIFO_OFFSET+0x00006000
#define BLT_OFFSET	FIFO_OFFSET+0x00008000
#define BITMAP_OFFSET	FIFO_OFFSET+0x0000A000
#define LINE_OFFSET	FIFO_OFFSET+0x0000C000
#define TRI03_OFFSET	FIFO_OFFSET+0x0000E000
#define PCIO_OFFSET	0x00601000

#endif /* _RIVA_REGS_H */