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view src/video/photon/SDL_ph_image_c.h @ 3899:081aecdb0911 SDL-1.2

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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 c121d94672cb a1b03ba2fcd0
line wrap: on
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/*
    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 __SDL_PH_IMAGE_H__
#define __SDL_PH_IMAGE_H__

#include "../../events/SDL_events_c.h"
#include "SDL_ph_video.h"

struct private_hwdata
{
   PdOffscreenContext_t* offscreenctx;
   PdOSCCreateLockParams_t crlockparam;
   PdOSCLockParams_t lockparam;
   Uint32 colorkey;
};

extern int ph_SetupImage(_THIS, SDL_Surface* screen);
extern void ph_DestroyImage(_THIS, SDL_Surface* screen);
extern int ph_SetupUpdateFunction(_THIS, SDL_Surface* screen, Uint32 flags);

extern int ph_AllocHWSurface(_THIS, SDL_Surface* surface);
extern void ph_FreeHWSurface(_THIS, SDL_Surface* surface);
extern int ph_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst);
extern int ph_FillHWRect(_THIS, SDL_Surface* surface, SDL_Rect* rect, Uint32 color);
extern int ph_LockHWSurface(_THIS, SDL_Surface* surface);
extern void ph_UnlockHWSurface(_THIS, SDL_Surface* surface);
extern int ph_FlipHWSurface(_THIS, SDL_Surface* surface);
extern int ph_SetHWColorKey(_THIS, SDL_Surface* surface, Uint32 key);
extern int ph_SetHWAlpha(_THIS, SDL_Surface* surface, Uint8 alpha);
extern int ph_HWAccelBlit(SDL_Surface* src, SDL_Rect *srcrect, SDL_Surface* dst, SDL_Rect* dstrect);
extern int ph_UpdateHWInfo(_THIS);

extern void ph_NormalUpdate(_THIS, int numrects, SDL_Rect* rects);
extern void ph_OCUpdate(_THIS, int numrects, SDL_Rect* rects);
extern void ph_OCDCUpdate(_THIS, int numrects, SDL_Rect* rects);
extern void ph_OpenGLUpdate(_THIS, int numrects, SDL_Rect* rects);

#endif /* __SDL_PH_IMAGE_H__ */