VSync on SDL+OpenGL

Graphics and GPU Programming Programming OpenGL

Started by richy_ September 17, 2006 08:21 PM

11 comments, last by rotalever 17 years, 6 months ago

richy_

122

Author

September 17, 2006 08:21 PM

Any one knows a way to specify the vsync for SDL+OpenGL ?

Shadx

202

September 17, 2006 08:59 PM

Try SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);, although note that it might not work in windowed mode. So to see if it works, you'll need to go full screen.

Cheers,
Shadx

richy_

122

Author

September 17, 2006 09:20 PM

Thanks, that work!. Now the problem is how to specify de refresh rate. Any idea ?

Shadx

202

September 18, 2006 06:44 AM

The refresh rate is a function of the OS (well, windows manager). In windows, right-click on the screen, Properties, Advance, Monitor Tab should bring you to where you can change the refresh rate.

Shadx

richy_

122

Author

September 21, 2006 04:11 PM

OK, thanks. That work again!

rotalever

122

September 28, 2006 03:25 AM

Isn't there any way to change the refreshrate via SDL?

Anonymous

September 29, 2006 10:48 AM

and FSAA?

zedzeek

529

September 29, 2006 03:11 PM

i dont know about refresh rate but AA is done with multiample
check the sdl doc or header file for info

Captain Courgette, eat more veg

Ezbez

1,164

October 01, 2006 07:23 AM

You really shouldn't change the refresh rate from inside of the program, at least not unless the user specifies it. Older monitors (like mine) can't support many refresh rates, if your program defaults to, say, 75Hz, it'll come up black on my screen and I won't be able to play.

This has even happened with some professional games, too. That sends me on a hunt through config files and registry values to find where they hide the refresh rate.

And why do you even want to change the refresh rate?

V-man

813

October 01, 2006 09:22 AM

"This has even happened with some professional games, too. That sends me on a hunt through config files and registry values to find where they hide the refresh rate."

That's a programming bug you found in other games.
I'm sure there are games out there that would try to create a 1000000 x 1000000 @ 2billion hertz fullscreen if you tell it to.

You can query for the supported monitor modes and choose whichever you want. Wow!

Sorry, I don't know the SDL API but I'm sure the ability is in there.

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

VSync on SDL+OpenGL

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

VSync on SDL+OpenGL

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines