Mercurial > sdl-ios-xcode
view src/video/x11/SDL_x11dyn.h @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Sun, 08 Jan 2006 21:18:15 +0000 |
parents | f60f6f4ffc6f |
children | a388f2b59044 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 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 */ #ifndef _SDL_x11dyn_h #define _SDL_x11dyn_h #include <X11/Xlib.h> #include <X11/Xutil.h> #include <X11/Xatom.h> #include <X11/Xproto.h> #include <X11/Xlibint.h> #if defined(__osf__) #include <XFree86/extensions/extutil.h> #else #include <X11/extensions/extutil.h> #endif #ifndef NO_SHARED_MEMORY #include <sys/ipc.h> #include <sys/shm.h> #include <X11/extensions/XShm.h> #endif /* * Never reference Xlib directly...we might load it dynamically at runtime. * Even if we don't, for readability, we still use the function pointers * (although the symbol resolution will be done by the loader in that case). * * We define SDL_X11_SYM and include SDL_x11sym.h to accomplish various * goals, without having to duplicate those function signatures. */ #ifdef __cplusplus extern "C" { #endif /* evil function signatures... */ typedef Bool (*SDL_X11_XESetWireToEventRetType)(Display*,XEvent*,xEvent*); typedef int (*SDL_X11_XSynchronizeRetType)(Display*); typedef Status (*SDL_X11_XESetEventToWireRetType)(Display*,XEvent*,xEvent*); #define SDL_X11_SYM(req,ret,fn,params) extern ret (*p##fn) params; #include "SDL_x11sym.h" #undef SDL_X11_SYM /* Macro in the xlib headers, not an actual symbol... */ #define pXDestroyImage XDestroyImage /* Workaround code in headers... */ #if !__SDL_NO_REDEFINE_X11_HEADER_SYMS #define _XFlush p_XFlush #define _XFlushGCCache p_XFlushGCCache #define _XReply p_XReply #define _XSend p_XSend #define _XData32 p_XData32 #endif int SDL_X11_LoadSymbols(void); void SDL_X11_UnloadSymbols(void); #ifdef __cplusplus } #endif #endif /* !defined _SDL_x11dyn_h */