OpenLayer Issues http://www.allegro.cc/forums/view/586631 Allegro.cc Forum Thread matthew@allegro.cc (Matthew Leverton) Tue, 25 Jul 2006 14:01:41 +0000

I vaguely remember this being brought up before, but I can't remember if it was resolved, and I was undable to find old posts about it...

Whenever I try to run anything written with OL, I get two small images instead of a single window or full screen display. See the following image:

http://homepages.inspire.net.nz/~lennylen/images/shot.jpg

I suspect the problem is with my onboard Gfx card which is a GeForce 4 MX. Does anyone else with the same card have the same problem?

]]> no-reply@allegro.cc (LennyLen) Sun, 23 Jul 2006 12:46:26 +0000

That happens on one of my friends PCs. But every PC i've tried has had the can't-move-window bug where the window just keeps snapping back to it original position.:-/

]]> no-reply@allegro.cc (Erkle) Sun, 23 Jul 2006 13:14:50 +0000
Quote:

That happens on one of my friends PCs

Could you find out what type of gfx card he has?

]]> no-reply@allegro.cc (LennyLen) Sun, 23 Jul 2006 18:06:11 +0000

He has a GeForce 4 Ti.

]]> no-reply@allegro.cc (Erkle) Mon, 24 Jul 2006 13:04:38 +0000

I have a Geforce 4 MX 440 SE and have never seen any problems likt this. Do AllegroGL programs do the same thing?

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 13:35:53 +0000

Is there an OL IRC Channel open?

]]> no-reply@allegro.cc (Mordredd) Mon, 24 Jul 2006 13:55:51 +0000

It's a pity there are not more OpenLayer developers. I feel sorry for Fladimir to get all these bug reports. :(

It's a great library though! :)

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 14:05:29 +0000
Quote:

Do AllegroGL programs do the same thing?

I can't think of any that I've tried, so I'll have to test this a bit later. For the moment, I'm downloading the drivers that were released last month.

[edit]Just remembered that I have AllegroGL installed. All the example programs run fine.

]]> no-reply@allegro.cc (LennyLen) Mon, 24 Jul 2006 14:33:34 +0000

As far as I can see the OpenLayer screen setup code is just a wrapper around AllegroGL. So I don't know why some people seem to be having problems with OL.

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 15:01:27 +0000
Quote:

It's a pity there are not more OpenLayer developers.

There's more than just me now. But yeah, setting up the screen is done with AllegroGL.

]]> no-reply@allegro.cc (Fladimir da Gorf) Mon, 24 Jul 2006 15:22:09 +0000

So why do the AllegroGL examples work and not OpenLayer? ???
Strange!

Keep up the good work Fladimir! We do appreciate it. :D

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 15:24:09 +0000

Update:

I upgraded my drivers, and now instead of two small frameless windows, I get a normal window, but it remains black. :-/

]]> no-reply@allegro.cc (LennyLen) Mon, 24 Jul 2006 16:51:13 +0000

Are you trying to display bitmaps using 16-bit color depth? There seems to be a problem displaying bitmaps in 16-bit.

]]> no-reply@allegro.cc (Vasco Freitas) Mon, 24 Jul 2006 17:31:25 +0000

Yes, openlayer doesn't work with 16 bit color modes at the moment. Use 32 bit ones..

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 17:41:47 +0000
Quote:

Are you trying to display bitmaps using 16-bit color depth?

My desktop is set to 32bit.

]]> no-reply@allegro.cc (LennyLen) Mon, 24 Jul 2006 17:45:52 +0000

No, are you trying to open a 16bit screen or load 16bit bitmaps?

]]> no-reply@allegro.cc (Richard Phipps) Mon, 24 Jul 2006 17:48:03 +0000
Quote:

No, are you trying to open a 16bit screen or load 16bit bitmaps?

I'm simply running other people's games, not using OL myself. Since they run for everyone else, I assume they are using 32bit bitmaps.

]]> no-reply@allegro.cc (LennyLen) Mon, 24 Jul 2006 18:34:46 +0000
Quote:

I upgraded my drivers, and now instead of two small frameless windows, I get a normal window, but it remains black.

Well, then it really sounds like a driver issue. Have you tried rendering some primitives to the screen (not only Bitmaps)?

]]> no-reply@allegro.cc (Fladimir da Gorf) Tue, 25 Jul 2006 02:18:05 +0000

I've attached a test OL app. It opens a 32bit window and you should see a blue background with a black square and a smaller red square inside it.

Press the LEFT mouse button to exit.
(I've not attached any DLL's..But it's quite big, so maybe I attached some other junk when compiling it. ;))

]]> no-reply@allegro.cc (Richard Phipps) Tue, 25 Jul 2006 02:46:12 +0000

err... i just get a blu screen.

Ati Mobility Radeon 9700
WinXp Pro Sp 2

]]> no-reply@allegro.cc (FMC) Tue, 25 Jul 2006 02:58:45 +0000

Well.. that's not good. ???

]]> no-reply@allegro.cc (Richard Phipps) Tue, 25 Jul 2006 03:02:58 +0000
Quote:

err... i just get a blu screen.

Ditto. Though it's a window and not a full-screen. ;)

]]> no-reply@allegro.cc (LennyLen) Tue, 25 Jul 2006 03:32:08 +0000

Yep, just a blue window
Windows 2000 Radeon 9600

]]> no-reply@allegro.cc (lambik) Tue, 25 Jul 2006 12:06:36 +0000

Well, here's the code (which is based on a OL problem in another thread):

1#include <allegro.h>
2#include <OpenLayer.hpp>
3using namespace ol;
4using namespace std;
5 
6int main(void)
7{
8 
9 Setup::SetupProgram();
10 
11 Settings::StoreMemoryBitmaps(true);
12 
13 Setup::SetupScreen(800, 600, WINDOWED);
14 
15 set_color_depth(32);
16 
17 Settings::SetAntialiasing(true);
18 
19 Bitmap test(200, 200, Rgba::BLACK);//INVISIBLE);
20 
21 Canvas::SetTo(test);
22 Rect(90, 90, 20, 20).Draw(Rgba::RED);
23 
24 Canvas::SetTo(SCREEN_BACKBUF);
25 Canvas::Fill(Rgba::BLUE);
26 
27 test.Blit(100, 100);
28 
29 do
30 {
31 Canvas::Refresh();
32 } while (!mouse_b);
33 return 0;
34
35}
36END_OF_MAIN()

Perhaps this means that other buffers are not working for you?

A proper comprehensive OpenLayer test might be useful to help track down these problems..

]]> no-reply@allegro.cc (Richard Phipps) Tue, 25 Jul 2006 14:01:41 +0000