error with sdl2 64bits on windows 10 64bits

[fochen79]

Hi
this simple code compiles ok but crashes when runing , but if i uncomment the lines it works ok
can you please try it on windows 10 64bits & sdl2 64bits & fpc 3.2 64bits
`
{$mode objfpc}
{$apptype gui}
program demo;
uses
sdl2;

var
win : psdl_window;
render: psdl_renderer;
ev : tsdl_event;
done: boolean = false;

begin
//sdl_sethint(sdl_hint_render_driver,'opengl');
sdl_init(sdl_init_video);
win := sdl_createwindow('FPC demo',50,50,320,200,sdl_window_shown {or sdl_window_opengl} );
render := sdl_createrenderer(win,-1,sdl_renderer_accelerated);

while not done do begin
if boolean(sdl_pollevent(@ev)) then
begin
case ev.type_ of
sdl_quitev:begin
done:= true;
end;
end;
end;
sdl_setrenderdrawcolor(render, 32, 38, 42, 255);
sdl_renderclear(render);
sdl_renderpresent(render);
end;

sdl_destroyrenderer(render);
sdl_destroywindow(win);
end.

`

[fochen79]

this is the error message

[suve]

Can you try compiling with -gl?

[fochen79]

yes i tried , the line 17 is render := sdl_createrenderer(win,-1,sdl_renderer_accelerated);

[fochen79]

also i tried using gdb it show this :

[suve]

Hmm. This seems very similar to #56. We thought that it's a Linux-only issue, but maybe it happens on Windows as well?

Please check if this will work:

1. Add uses Math to your code
2. Add the following two variables: OldMask, NewMask: TFPUExceptionMask;
3. Add the following code before the SDL_CreateRenderer call:

OldMask := Math.GetExceptionMask();
NewMask := OldMask;
Include(NewMask, exInvalidOp);
Include(NewMask, exZeroDivide);
Math.SetExceptionMask(NewMask);

4. And then after the renderer is created:

Math.SetExceptionMask(OldMask);

[fochen79]

thanks , yes it works with this workaround

[fochen79]

dose this mean i will use this workaround always in win10 64bits ?

[suve]

Well, this bug is specific to software renderers - so if you want to support running the program using SDL2's software renderer, then yes, the workaround will be needed.

I'll try poking around with a debugger a bit to see if I can spot any issues in SDL2 code. If not, I'll open an issue upstream; maybe someone there will have a better idea.

[fochen79]

ok , but the software renderer works fine without problem
the problem is with SDL_RENDERER_ACCELERATED ,