Author Topic: How do I do backgrounds? [Not Relevant anymore] (Read 9214 times)

olafurw · « **on:** December 26, 2009, 11:35:39 pm »

This is baffling me. (I'm using Windows 7 btw)

I have a few sprites that I walk around the screen, this works very smooth and well.

As soon as I try to create some sort of a background sprite, everything slows down to a crawl.

I've tried two ways, one was to have a 800x600 image as a sprite and draw that every time (the image was only 11KB), but the whole program became very slow.

Then I tried the loop in a loop way to tile 50x50 images, and still this is as slow as the first method.

So how do I proceed?

Laurent · « **Reply #1 on:** December 26, 2009, 11:57:33 pm »

The first way shouldn't be slow at all. A few users have performances issues with Windows 7, you should try your program on another OS if you can.

olafurw · « **Reply #2 on:** December 27, 2009, 12:07:09 am »

I can't try another OS at the moment, but lets assume that this is a problem in Windows 7. Do you know what I could try to fix this problem?

Laurent · « **Reply #3 on:** December 27, 2009, 12:31:33 am »

No, I still don't know what happens with Windows 7.

Metapyziks · « **Reply #4 on:** December 27, 2009, 01:19:17 am »

I can confirm this with Windows 7.

I am trying to use a pair of buffer images which are drawn to a window every frame. Goes at about 11 FPS

If I comment out the lines that draw the images to the window, it shoots up to over 150 FPS.

Metapyziks · « **Reply #5 on:** December 27, 2009, 01:36:32 am »

Fixed: I updated my video drivers, and now it runs fine.
According to something I read somewhere its because the drivers you get with windows 7 (surprise surprise) don't support opengl, so have to interface with direct x instead.

olafurw · « **Reply #6 on:** December 27, 2009, 01:43:04 am »

There are no updated display drivers for my laptop. So it seems I'm out of luck.

Probably going to switch to Allegro then or something. It's a damn shame.

Luinechor · « **Reply #7 on:** December 27, 2009, 03:45:19 am »

Quote from: "olafurw"

There are no updated display drivers for my laptop. So it seems I'm out of luck.

You could look at http://www.laptopvideo2go.com/ - perhaps they do have some modded driver for you laptop.

Nothingness0x · « **Reply #8 on:** December 27, 2009, 03:34:01 pm »

That's scaring me out, because I'm gonna buy a new computer and so I will probably have window 7 with it. If I cannot keep on using SFML, it's gonna be bad. There's no way I'll give up SFML for another lib :cry:

Laurent · « **Reply #9 on:** December 27, 2009, 04:40:10 pm »

People having problems with Windows 7 and SFML should test another OpenGL application to see what's wrong (SFML or the OpenGL driver).

There's absolutely no reason for SFML to be so slow on Windows 7.

olafurw · « **Reply #10 on:** December 30, 2009, 03:04:45 am »

Just played Quake 2 at a lan in OpenGL and it works perfectly. So nothing wrong with the OpenGL setup.

So I'm wondering if I should try SFML 2, but the thing is, that this is not a project I can run on a preview build.

Laurent · « **Reply #11 on:** December 30, 2009, 11:01:45 am »

That's really weird.

It would be interesting to get some feedback about SFML 2 & Windows 7, if someone can try this combination

OniLinkPlus · « **Reply #12 on:** December 30, 2009, 09:31:30 pm »

I've been using SFML2 with Windows 7 Build 7100 and have not experienced any lag. Then again I do have ATi's Catalyst Drivers installed.

Metapyziks · « **Reply #13 on:** December 30, 2009, 09:33:53 pm »

Quote from: "Laurent"

It would be interesting to get some feedback about SFML 2 & Windows 7, if someone can try this combination

I'm using both, in VC++ 2008 express. Works perfectly so far

olafurw · « **Reply #14 on:** December 31, 2009, 02:37:35 am »

I tried a compiled version of my app on another Windows 7 machine and it worked perfectly there.

That machine was a 32bit W7 machine though, and mine is 64bit W7.

Then I tried it on another W7 machine that is 64 bit and I had the same slowdown issue as I had before.

So there is something going on in W7 64bit. Be it SFML or OpenGL.

Author Topic: How do I do backgrounds? [Not Relevant anymore] (Read 9214 times)

Luinechor