2 replies to this topic

[lehthanis]

Hi all,

I've been going through IonWare's Tetris tutorial over at http://openglgui.sou.../tutorials.html and I'm having some oddities.

First of all, the screen is VERY flickery when the game is running with the provided source code. It seems to respond to my move commands quite well, but the animations seem to be goign super slow, and eliminating full lines seems to be slow also.

I'm also having trouble with loading blocks. It only seems to want to give me the square block...so I can't tell if block rotation is working or anything.

I ended up commenting out all the includes for glaux.h and the sample code compiled with minimal changes (I had to add the int declaration in front of several i=0 statements in the parentheses portions of for loops). Does anyone know how to contact the author of those tutorials and whether or not he intends to finish the series?

Edited by lehthanis, 04 June 2012 - 12:50 PM.

[Goran Milovanovic]

Flickering tends to occur when your application is single buffered, instead of double buffered.

Also, that tutorial seems to be out of date, judging by the calls to glVertex. Modern OpenGL tutorials are shader based; Immediate mode is obsolete.

... I think OpenGL is great, but I don't think it's a good place for beginners to start.

[larspensjo]

You would get a much better tutorial on OpenGL and 3D programming if you look at http://www.arcsynthesis.org/gltut/. But as Goran says, OpenGL is no easy thing to start with.