Mercurial > sdl-ios-xcode

view src/main/epoc/SDL_main.cpp @ 1544:ab1e4c41ab71

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed bug #33 Mike Frysinger wrote: > with libsdl-1.2.9, some games (like bomberclone) started > segfaulting in Gentoo [...snip...] > the last change in the last hunk: [...snip...] > if i change the statement to read: > (table[which].blit_features & GetBlitFeatures()) == GetBlitFeatures() > bomberclone no longer segfaults on my box Alex Volkov wrote: > The test "(table[which].blit_features & GetBlitFeatures()) == > table[which].blit_features)" is correct, and the previous > "(table[which].cpu_mmx == SDL_HasMMX())" was actually broken. I think there is potentially a slightly different cause of the above problem. During the introduction of the Altivec code, the blit_table struct field 'alpha' got changed from a straightforward enum to a bitmask, which makes perfect sense by itself. However, now the table driven blitter selection code in SDL_CalculateBlitN() can choose the wrong blitters when searching for a NO_ALPHA blitter because of the following code: int a_need = 0; ... (a_need & table[which].alpha) == a_need && When searching through the normal_blit_2[] table, a SET_ALPHA blitter (like Blit_RGB565_ARGB8888) can now be selected instead of a NO_ALPHA one, causing alpha channel bits to appear in a non-alpha destination surface. I suppose this could theoretically be an indirect cause of the segfault mentioned above. I *think* this can be fixed by changing to int a_need = NO_ALPHA;
author Sam Lantinga <slouken@libsdl.org>
date Wed, 15 Mar 2006 15:47:49 +0000
parents f6ffac90895c
children
line wrap: on
line source

/*
    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
*/

/*
    SDL_main.cpp
    The Epoc executable startup functions 

    Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi)
*/

#include <e32std.h>
#include <e32def.h>
#include <e32svr.h>
#include <e32base.h>
#include <estlib.h>
#include <stdlib.h>
#include <stdio.h>
#include <w32std.h>
#include <apgtask.h>

#include "SDL_error.h"

#ifndef EXPORT_C
# ifdef __VC32__
#  define IMPORT_C __declspec(dllexport)
#  define EXPORT_C __declspec(dllexport)
# endif
# ifdef __GCC32__
#  define IMPORT_C
#  define EXPORT_C __declspec(dllexport)
# endif
#endif

#if defined(__WINS__)
#include <estw32.h>
IMPORT_C void RegisterWsExe(const TDesC &aName);
#endif

/* The prototype for the application's main() function */
#define main	SDL_main
extern "C" int main (int argc, char *argv[], char *envp[]);
extern "C" void exit (int ret);


/* Epoc main function */

GLDEF_C TInt E32Main() 
    {
    /*  Get the clean-up stack */
	CTrapCleanup* cleanup = CTrapCleanup::New();

    #if defined(__WINS__)
    /* arrange for access to Win32 stdin/stdout/stderr */
   	RWin32Stream::StartServer();	
    #endif

    /* Arrange for multi-threaded operation */
	SpawnPosixServerThread();	

    /* Get args and environment */
	int argc=0;
	char** argv=0;
	char** envp=0;
	__crt0(argc,argv,envp);	

    #if defined(__WINS__)
	/* Cause the graphical Window Server to come into existence */
	RSemaphore sem;
	sem.CreateGlobal(_L("WsExeSem"),0);
	RegisterWsExe(sem.FullName());
    #endif


    /* Start the application! */

    /* Create stdlib */
    _REENT;

    /* Set process and thread priority */
    RThread currentThread;

    currentThread.Rename(_L("SdlProgram"));
    currentThread.SetProcessPriority(EPriorityLow);
    currentThread.SetPriority(EPriorityMuchLess);

    /* Call stdlib main */
    int ret = main(argc, argv, envp); /* !! process exits here if there is "exit()" in main! */	

    /* Call exit */
    exit(ret); /* !! process exits here! */			

    /* Free resources and return */
    CloseSTDLIB();
   	delete cleanup;									
    return(KErrNone);
    }

/* Epoc dll entry point */
#if defined(__WINS__)
GLDEF_C TInt E32Dll(TDllReason)
	{
	return(KErrNone);
	}

EXPORT_C TInt WinsMain(TAny *)
	{
    E32Main();
	return KErrNone;
	}
#endif