view src/video/os2fslib/SDL_os2fslib.h @ 1542:a8bf1aa21020

Fixed bug #15 SDL_blit_A.mmx-speed.patch.txt -- Speed improvements and a bugfix for the current GCC inline mmx asm code: - Changed some ops and removed some resulting useless ones. - Added some instruction parallelism (some gain) The resulting speed on my Xeon improved upto 35% depending on the function (measured in fps). - Fixed a bug where BlitRGBtoRGBSurfaceAlphaMMX() was setting the alpha component on the destination surfaces (to opaque-alpha) even when the surface had none. SDL_blit_A.mmx-msvc.patch.txt -- MSVC mmx intrinsics version of the same GCC asm code. MSVC compiler tries to parallelize the code and to avoid register stalls, but does not always do a very good job. Per-surface blending MSVC functions run quite a bit faster than their pure-asm counterparts (upto 55% faster for 16bit ones), but the per-pixel blending runs somewhat slower than asm. - BlitRGBtoRGBSurfaceAlphaMMX and BlitRGBtoRGBPixelAlphaMMX (and all variants) can now also handle formats other than (A)RGB8888. Formats like RGBA8888 and some quite exotic ones are allowed -- like RAGB8888, or actually anything having channels aligned on 8bit boundary and full 8bit alpha (for per-pixel alpha blending). The performance cost of this change is virtually 0 for per-surface alpha blending (no extra ops inside the loop) and a single non-MMX op inside the loop for per-pixel blending. In testing, the per-pixel alpha blending takes a ~2% performance hit, but it still runs much faster than the current code in CVS. If necessary, a separate function with this functionality can be made. This code requires Processor Pack for VC6.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 15 Mar 2006 15:39:29 +0000
parents e3242177fe4a
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
line wrap: on
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/*
    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
*/
#include "SDL_config.h"

#ifndef _SDL_os2fslib_h
#define _SDL_os2fslib_h


// OS2 specific includes
#define INCL_TYPES
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_DOSPROCESS
#define INCL_WIN
#define INCL_GPI
#include <os2.h>

#include <FSLib.h>

/* Hidden "this" pointer for the video functions */
#define _THIS	SDL_VideoDevice *_this

/* Private display data */
struct SDL_PrivateVideoData
{
  FSLib_VideoMode_p   pAvailableFSLibVideoModes;
  SDL_Rect          **pListModesResult; // Allocated memory to return list of modes for os2fslib_ListModes() API

  FSLib_VideoMode     SrcBufferDesc;    // Description of current source image buffer
  char               *pchSrcBuffer;     // The source image buffer itself
  SDL_Surface        *pSDLSurface;      // The SDL surface describing the buffer
  HMTX                hmtxUseSrcBuffer; // Mutex semaphore to manipulate src buffer
  HWND                hwndFrame, hwndClient;  // Window handle of frame and client
  int                 iPMThreadStatus;  // 0: Not running
                                        // 1: Running
                                        // Other: Not running, had an error
  int                 tidPMThread;      // Thread ID of PM Thread
  int                 fInFocus;         // True if we're in focus!
  int                 iSkipWMMOUSEMOVE; // Number of WM_MOUSEMOVE messages to skip!
  int                 iMouseVisible;    //

  PFNWP               pfnOldFrameProc;  // Old window frame procedure
  int                 bProportionalResize; // 0: No proportional resizing
                                           // 1: Do proportional resizing
  ULONG               ulResizingFlag;   // First resizing flag value
};

/* OS/2 specific backdoor function to be able to set FrameControlFlags of */
/* the SDL window before creating it. */
extern DECLSPEC void SDLCALL SDL_OS2FSLIB_SetFCFToUse(ULONG ulFCF);

#endif /* _SDL_os2fslib_h */