view src/video/quartz/CGS.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 d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2003  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"

/* 
    Obscuring code: maximum number of windows above ours (inclusive) 
    
    Note: this doesn't work too well in practice and should be
    phased out when we add OpenGL 2D acceleration. It was never
    enabled in the first place, so this shouldn't be a problem ;-)
*/
#define kMaxWindows 256

/* Some of the Core Graphics Server API for obscuring code */
#define kCGSWindowLevelTop          2147483632
#define kCGSWindowLevelDockIconDrag 500
#define kCGSWindowLevelDockMenu     101
#define kCGSWindowLevelMenuIgnore    21
#define kCGSWindowLevelMenu          20
#define kCGSWindowLevelDockLabel     12
#define kCGSWindowLevelDockIcon      11
#define kCGSWindowLevelDock          10
#define kCGSWindowLevelUtility        3
#define kCGSWindowLevelNormal         0

/* 
    For completeness; We never use these window levels, they are always below us
    #define kCGSWindowLevelMBarShadow -20
    #define kCGSWindowLevelDesktopPicture -2147483647
    #define kCGSWindowLevelDesktop        -2147483648
*/

typedef CGError       CGSError;
typedef long          CGSWindowCount;
typedef void *        CGSConnectionID;
typedef int           CGSWindowID;
typedef CGSWindowID*  CGSWindowIDList;
typedef CGWindowLevel CGSWindowLevel;
typedef NSRect        CGSRect;

extern CGSConnectionID _CGSDefaultConnection ();

extern CGSError CGSGetOnScreenWindowList (CGSConnectionID cid,
                                          CGSConnectionID owner,
                                          CGSWindowCount listCapacity,
                                          CGSWindowIDList list,
                                          CGSWindowCount *listCount);

extern CGSError CGSGetScreenRectForWindow (CGSConnectionID cid,
                                           CGSWindowID wid,
                                           CGSRect *rect);

extern CGWindowLevel CGSGetWindowLevel (CGSConnectionID cid,
                                        CGSWindowID wid,
                                        CGSWindowLevel *level);

extern CGSError CGSDisplayHWFill (CGDirectDisplayID id, unsigned int x, unsigned int y,
                                  unsigned int w, unsigned int h, unsigned int color);

extern CGSError CGSDisplayCanHWFill (CGDirectDisplayID id);

extern CGSError CGSGetMouseEnabledFlags (CGSConnectionID cid, CGSWindowID wid, int *flags);

int CGSDisplayHWSync (CGDirectDisplayID id);