view src/video/directfb/SDL_DirectFB_video.h @ 4140:fc69b552ee32 SDL-1.2

Date: Thu, 28 Feb 2008 22:54:29 +0100 From: Sylvain Beucler Subject: [SDL] SDL window resize and flicker I have a resizable SDL window, and when it's resized, the surface goes black _and_ is flushed to screen before I have a chance to redraw it. This causes flicker. The super-small attached patch fixes this issue by avoiding a SDL_Flip() right after the window resize. What do you think? This SDL_ClearSurface function is only called once in the code, in SDL_SetVideoMode, and as far as I can tell the patch doesn't introduce other changes than getting rid of the flicker.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 29 Feb 2008 13:57:49 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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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_DirectFB_video_h
#define _SDL_DirectFB_video_h

#include <directfb.h>

#include "SDL_mouse.h"
#include "../SDL_sysvideo.h"

#define _THIS SDL_VideoDevice *this

/* Private display data */

struct SDL_PrivateVideoData
{
  int                    initialized;

  IDirectFB             *dfb;
  IDirectFBDisplayLayer *layer;
  IDirectFBEventBuffer  *eventbuffer;

  int nummodes;
  SDL_Rect **modelist;

  /* MGA CRTC2 support */
  int enable_mga_crtc2;
  int mga_crtc2_stretch;
  float mga_crtc2_stretch_overscan;
  IDirectFBDisplayLayer *c2layer;
  IDirectFBSurface *c2frame;
  DFBRectangle c2ssize;	/* Real screen size */
  DFBRectangle c2dsize;	/* Stretched screen size */
  DFBRectangle c2framesize;    /* CRTC2 screen size */
};

#define HIDDEN (this->hidden)

void SetDirectFBerror (const char *function, DFBResult code);

#endif /* _SDL_DirectFB_video_h */