Glut gears comparison

SDL Development
1

The new archive also builds the original glut version of gears:
http://www.libsdl.org/opengl/SDLgears-1.0.1.tar.gz

People have gotten an improvement ranging from 7 FPS to 100 FPS using
the SDL version. :slight_smile:

See ya!
-Sam Lantinga, Lead Programmer, Loki Entertainment Software

2

Actually I got more than that but its a good average!!! <improvement!>

DAveOn Sun, 23 Jul 2000, Sam Lantinga wrote:

The new archive also builds the original glut version of gears:
http://www.libsdl.org/opengl/SDLgears-1.0.1.tar.gz

People have gotten an improvement ranging from 7 FPS to 100 FPS using
the SDL version. :slight_smile:

See ya!
-Sam Lantinga, Lead Programmer, Loki Entertainment Software

3

Hi all,

Good and bad news! Good news first :slight_smile:

I also saw the increase (roughly 10%).

Now for the bad news :frowning:

I also saw a marked drop in responsiveness of the application. This is
most easily seen when holding down the ‘z’ key. ‘gears’ does something,
‘SDLgears’ does not. Even with “key bouncing” ‘SDLgears’ is very slow at
processing the keystrokes. It can also be seen when pressing escape to
quit. ‘gears’ does so straight away, while ‘SDLgears’ thinks about it a
bit first (for about a second) and then quits.

Secondly, I noticed that it is not possible to resize the 'SDLgears’
window. How hard would it be to add that in? I don’t really wnat to have
to recompile every time I wish to test a different size to compare
latencies and raw speed.

This is from a current CVS build (tag “devel_1_1_0” date “Mon Jul 24
11:48:50 UTC 2000”)

Any suggestions?

Paul

Sam Lantinga wrote:> The new archive also builds the original glut version of gears:

http://www.libsdl.org/opengl/SDLgears-1.0.1.tar.gz

People have gotten an improvement ranging from 7 FPS to 100 FPS using
the SDL version. :slight_smile:

See ya!
-Sam Lantinga, Lead Programmer, Loki Entertainment Software

4

If I hold down the key it doesn’t continue to move around as in the GLUT
demo. I have to repeatedly hit the arrow and z keys in order to get a
response from the SDL demo. I do get an incredible performance increase
as well. It has no problem exiting promptly when I hit Escape.

aside from no key repeat the SDL version blows away the GLUT version.

DaveOn Mon, 24 Jul 2000, Paul Wagland wrote:

Hi all,

Good and bad news! Good news first :slight_smile:

I also saw the increase (roughly 10%).

Now for the bad news :frowning:

I also saw a marked drop in responsiveness of the application. This is
most easily seen when holding down the ‘z’ key. ‘gears’ does something,
‘SDLgears’ does not. Even with “key bouncing” ‘SDLgears’ is very slow at
processing the keystrokes. It can also be seen when pressing escape to
quit. ‘gears’ does so straight away, while ‘SDLgears’ thinks about it a
bit first (for about a second) and then quits.

Secondly, I noticed that it is not possible to resize the 'SDLgears’
window. How hard would it be to add that in? I don’t really wnat to have
to recompile every time I wish to test a different size to compare
latencies and raw speed.

This is from a current CVS build (tag “devel_1_1_0” date “Mon Jul 24
11:48:50 UTC 2000”)

Any suggestions?

Paul

Sam Lantinga wrote:

The new archive also builds the original glut version of gears:
http://www.libsdl.org/opengl/SDLgears-1.0.1.tar.gz

People have gotten an improvement ranging from 7 FPS to 100 FPS using
the SDL version. :slight_smile:

See ya!
-Sam Lantinga, Lead Programmer, Loki Entertainment Software