OpenEuphoria

1. SDL2 Init Problem

• Posted by Lone_EverGreen_Ranger Jun 26, 2013
• 3716 views

Hello,

After having got my wrapper to open the DLL correctly, I am now having another issue. It appears SDL is not being initialized for whatever reason. However when I tried another function from the wrapper, it worked correctly. I'll post my code below.

Test Program: It is saying SDL is not being initailized, but it shows the correct number of CPUs.

with trace 
include EuSDL2.ew 
 
trace(2) 
 
atom dummy = SDL_Init(SDL_INIT_VIDEO) 
 
atom x 
x = SDL_GetCPUCount() 
 
if dummy = -1 then 
	puts(1,"Could not init SDL") 
end if 
 
printf(1,"CPUs: %d",{x}) 

Wrapper code:

public constant SDL_INIT_TIMER = 000000001 
public constant	SDL_INIT_AUDIO = 000000010 
public constant	SDL_INIT_VIDEO = 000000020 
public constant	SDL_INIT_JOYSTICK = 000000200 
public constant	SDL_INIT_HAPTIC = 000001000 
public constant	SDL_INIT_GAMECONTROLLER = 000002000 
public constant SDL_INIT_NOPARACHUTE = 000100000 
public constant	SDL_INIT_EVERYTHING = #0000FFFF 
 
public constant xSDL_Init = define_c_func(sdl,"SDL_Init",{C_UINT},C_INT), 
				xSDL_InitSubSystem = define_c_func(sdl,"SDL_InitSubSystem",{C_UINT},C_INT), 
				xSDL_Quit = define_c_proc(sdl,"SDL_Quit",{}), 
				xSDL_QuitSubSystem = define_c_proc(sdl,"SDL_QuitSubSystem",{C_UINT}), 
				xSDL_WasInit = define_c_func(sdl,"SDL_WasInit",{C_UINT},C_UINT) 
				 
public function SDL_Init(atom flags) 
	 
	return c_func(xSDL_Init,{flags}) 
	 
end function 
 
if xSDL_Init = -1 then 
	puts(1,"Could not load SDL_Init") 
end if 
 
public function SDL_InitSubSystem(atom flags) 
	 
	return c_func(xSDL_InitSubSystem,{flags}) 
 
end function 
 
if xSDL_InitSubSystem = -1 then 
	puts(1,"Could not load SDL_InitSubsystem!") 
end if 
 
public procedure SDL_QuitSubSystem(atom flags) 
	 
	c_proc(xSDL_QuitSubSystem,{flags}) 
	 
end procedure 
 
if xSDL_QuitSubSystem = -1 then 
	puts(1,"Could not load SDL_QuitSubSystem") 
end if 
 
public procedure SDL_Quit() 
	 
	c_proc(xSDL_Quit,{}) 
	 
end procedure 
 
if xSDL_Quit = -1 then 
	puts(1,"Could not load SDL_Quit") 
end if 
 
public function SDL_WasInit(atom flags) 
	 
	return c_func(xSDL_WasInit,{flags}) 
	 
end function 
 
if xSDL_WasInit = -1 then 
	puts(1,"Could not load SDL_WasInit") 
end if 

Sorry if its a little too much code, but I am not sure why SDL is not being initialized. When I ran it with tracer on, it pointed to the SDL_Init function, but I'm not sure what I'm doing wrong there. It says flags = 20 for SDL_Init, Any help?

3. Re: SDL2 Init Problem

• Posted by Lone_EverGreen_Ranger Jun 27, 2013
• 3568 views

Thanks for the help, I'll have to look more the hex and decimal values.

5. Re: SDL2 Init Problem

• Posted by Lone_EverGreen_Ranger Jun 27, 2013
• 3508 views

Yes I have tried using the advDLL, but still not getting errors. I have changed the flags to decimal values, and I am still getting the SDL could not be initalized error.

EDIT: It appears that wrapper works, as when I made a simple test to show a window, it came up.

7. Re: SDL2 Init Problem

• Posted by Lone_EverGreen_Ranger Mar 27, 2014
• 3179 views

I have not been able to solve the problem completley as of yet. However the wrapper works. I suspect it is some odd bug.

9. Re: SDL2 Init Problem

• Posted by ChrisB (moderator) Apr 08, 2014
• 2690 views

Hi

Found 3 dependencies that sdl2 was missing.

gdiplus.dll
msjava.dll
invalid

These were found by dependency walker.

Invalid seems to be within ntdll.dll (and not 100% sure what this means)

Installed gdiplus and msjava.dll, these dependencies went away, but there seems to be problem with ntdll.dll - tried updating this#, and again made no difference. Incidentally, deleting ntdll.dll from /system32 had no effect, as it was re installed from /system32/dllcache - so I replaced this one, after backing it up, then deleted the /system32 copy - windows replaced it, then complained, whiuch I told it to ignore, but still sdl2 could not init.

Is sdl2 working on other platforms (i was using 32 bit xp)

Chris