Messages

16

Audio / Delayed playing.

« on: June 25, 2009, 12:43:19 pm »

Ok, I uploaded a little quick'n'dirty demo program: http://www.itak.de/share/audioplay.rar

So what I do there is:

- Load the sound in a SFML SoundBuffer and create a sound object
- Load the sound in a byte array and create a .NET Audio Device
- Start two threads, one for SFML one for .NET Audio Device
- Wait for the threads to synchronize
- Start both players
- Should result in a single "beep", but I hear a "bebeep" (--> one is delayed)

But uhm, now that I benchmarked it that way I just found out that the delay more or less is just a few msec (< ~30msec). So it should not matter and SFML should be working correct. I must have messed up something with the original code were I thought it would be delayed much more...
I guess you can close the topic Laurent. Seems it was a false report. Sorry for that.

17

Audio / Delayed playing.

« on: June 25, 2009, 10:18:05 am »

I dont really know how SFML loads the sounds, but if it loads the sounds when I create a Soundbuffer-instance then it was loaded. And I ran the test in a loop so after the first run it should be loaded, right?

18

Audio / Delayed playing.

« on: June 25, 2009, 01:34:05 am »

I use SFML 1.5 (latest SVN) with .NET. I experienced a small delay after calling SOUND.Play().

Ok, lets check this:

Code: [Select]


        Dim boomBuf As New SoundBuffer("hq_boom.wav")
        Dim somesound As New Sound(boomBuf))

        With New Microsoft.VisualBasic.Devices.Audio
            somesound.Play()
            .Play(ByteArrayThatConatainsTheAudioFile, AudioPlayMode.Background)
        End With


What it does is basically load a sound into a buffer and create a sound object.
Then it instanciates a new .NET-Audio Device and then starts playing with both objects (the default .NET player and the SFML Sound).

The sound file I load is just a WAV with a single short "beep".

If both sounds would start playing right after another (like it should be) one would more or less just hear a "bebeep". But what you hear is "beep"...(delay ~300 to 500msec)..."beep".

The SFML sound is delayed. I realized this when I was making a simple application (Press key -> play sound). One could really "hear" the delay, it is pretty much too long for...let's say a game with a rocket exploding or something.

So, anyone got an idea about this? I saw someone posted something similar a few weeks ago but that problem got fixed back then, so this can / should not be related to this.

I just tried if it got fixed in SFML2-branch...but no, same think. Playing starts slightly delayed. =(

Edit: The order I start the sounds playing doesnt matter (first .NET-Player then SFML-Sound = same like first SFML then .NET). There is always a delay.

19

Graphics / PostFX Problem...

« on: June 23, 2009, 03:08:41 pm »

Ah thanks! I found out that my notebook's GFX chip only supports 22 instructions. I guess that might be the problem.

For those who ever might have the same problem:
I worked around the problem by applying 2 effects then. One blurring horizontally, another one blurring vertically. Halfes the performance, but it's still ok for my purposes.

Topic can be closed.

20

Graphics / PostFX Problem...

« on: June 23, 2009, 11:56:36 am »

Hm....what kind of tool do you mean? Could you give me a hint about what to google for? I have to admit that i am not that deep into shaders, so i really dont have a clue about what hitword could match my needs.

21

Graphics / PostFX Problem...

« on: June 23, 2009, 11:37:36 am »

I tried to make a new blur effect. Well, first, here is my code:

Code: [Select]


texture framebuffer

effect
{
float x = _in.x;
float y = _in.y;

float zx = 1.0 / 640.0;
float zy = 1.0 / 480.0;

vec4 p1 = framebuffer(vec2(_in.x, _in.y));
vec4 p2 = framebuffer(vec2(_in.x + zx, _in.y + zy));
vec4 p3 = framebuffer(vec2(_in.x - zx, _in.y + zy));
vec4 p4 = framebuffer(vec2(_in.x + zx, _in.y - zy));
vec4 p5 = framebuffer(vec2(_in.x - zx, _in.y - zy));

_out = (p1 + p2 + p3 + p4 + p5) * 0.2;
}



What I do is basically just get the vec4s of the colors that are a bit right, left, above or below the current pixel and just sum them up and multiply them by a factor to keep the brightness.

But the problem is: This example only works for me as long as I replace the last line (   _out = (p1 + p2 + p3 + p4 + p5) * f;) by this line:

   _out = (p1 + p2 + p3) * f;

As you can see I can not sum up all 5 vectors...It keeps crashing. As soon as I add more then 3 (no matter which ones I add, it just have to be less then 4) the effect simply doesn't show and the App.Window doesnt update anymore (oh and CPU usage goes up to 100%). If i just ad 3 vectors: everything works fine... Does anyone know what I am doing wrong?

EDIT: Strange enough, but this works too:

_out = p1 + p1 + p1 + p1 + p2 + p2 + p2;

So, the error occures as soon as I want to sum up more then 3 different vectors. A work around like

vec4 dummy = p1 + p2 + p3;
_out = dummy + p4 + p5;

doesnt work, too...

Another EDIT:

I thoguht it might be a memory problem with the GLSL compiler or something so i tried this code:

Code: [Select]


texture framebuffer

effect
{
float x = _in.x;
float y = _in.y;

float zx = 1.0 / 640.0;
float zy = 1.0 / 480.0;

vec4 val;
vec4 p1 = framebuffer(vec2(_in.x, _in.y));

val = framebuffer(vec2(_in.x + zx, _in.y + zy));
p1 = p1 + val;

val = framebuffer(vec2(_in.x - zx, _in.y + zy));
p1 = p1 + val;

val = framebuffer(vec2(_in.x + zx, _in.y - zy));
p1 = p1 + val;

val = framebuffer(vec2(_in.x - zx, _in.y - zy));
p1 = p1 + val;

float f = 0.2;

_out = p1 * f;
}


Problem remains: As soon as i sum up more then 3 different pixels i get a crash. If i just add 3 or less all is fine....

22

SFML projects / SPARK opensource particle engine with an SFML module

« on: June 22, 2009, 08:54:24 pm »

Quite nice! Will you offer .NET bindings for SPARK+SFML, too?

23

General discussions / Release interval

« on: May 25, 2009, 01:48:56 pm »

I guess downloading the SVN and compiling it is more or less the same...

24

General discussions / ludum dare mini compo May 22

« on: May 22, 2009, 01:03:25 pm »

hehe. good luck! Tell us when you are done with your project there =)

25

Window / RenderWindow returning 0 width/height after creation (Win)

« on: May 22, 2009, 01:00:31 pm »

I am using .GetWidth/.GetHeigh with latest SVN (SFML2) and it works like it should.

26

General / Just a question about the progress

« on: May 22, 2009, 12:50:57 pm »

I don't know if in Visual Basic you can just let it alive, but in C++ I just never free it and I'm doing OK.

Hm, I think there is no way to keep it alive since .NET destroys it automatically i guess.

I've already posted that if the library skips the wglDeleteContext in the WM_DESTROY event... SFML wont crash.

I will comment out those lines and recompile SFML and see what happens.

But isnt it strange that deactivating the VS.NET's debug host process fixes the crashes too...?

27

General / Just a question about the progress

« on: May 19, 2009, 09:02:57 pm »

but seems it doesnt work for the .NET package

Yes, in SFML.Net the internal sf::String of the String2D class is always constructed with the default font first.

I compiled the .NET libs i found here: /branches/sfml2/dotnet/
I tried my little testprogram again...still same error. =(

You have to recompile SFML (static release), CSFML (dynamic release) and then SFML.Net.

Ok, i recompiled it like you said i should. Then i copied the new files (csfml-???.dll) to dotnet/extlibs/ and recompiled the dotnet-projekt. Then i copied all new libs (csfml-???.dll and fsmlnet-???.dll) to my test project and set up the links correctly. the problem got partly solved:

running the executable out of the IDE (VS2008, Debugging mode) --> error on exit
running the executable (release-build, not out of IDE) --> no error on exit
running the executable (debug-build, but not out of IDE) --> no error on exit

I figured out that the error is still caused by the string2D class. As long as i dont create that class, i wont get an error. but maybe it's just an IDE issue? Any ideas anyone?

edit: Disabeling the VS-Host-Process fixes the error, too...

28

General / Just a question about the progress

« on: May 19, 2009, 12:30:20 pm »

Hm, yes, i read i should avoid the default font and it should work ... but seems it doesnt work for the .NET package (at least it doesnt for me.... O.O)
But i will try to use the SFML2 branch. It's this one, right? /branches/sfml2/dotnet/

Oh, just in case i am doing something wrong, here is the quick'n'dirty code i used for testing the crashing:

Code: [Select]


Imports SFML.Graphics
Imports SFML.Audio
Imports SFML.Window
Imports System

Module Module1
    Dim WithEvents App As RenderWindow
    Dim doit As Boolean = True

    Public Sub Main()
        Dim vMode As New VideoMode(640, 480, 32)
        App = New RenderWindow(vMode, "Test", Styles.None Or Styles.Titlebar)

        Dim img As New Image("somefile.png")
        Dim sprite As New Sprite(img)

        Dim fnt As Font = New Font("c:\windows\fonts\Calibri.ttf", 14)
        Dim str2D As New String2D("Hello World", fnt, 14)

        Dim ff As Long = 0
        Dim st As Long = Now.TimeOfDay.TotalMilliseconds
        Dim fps As Single = 0

        App.UseVerticalSync(True)
        App.SetFramerateLimit(60)

        While App.IsOpened And doIt

            App.Clear(New SFML.Graphics.Color(0, 0, 0, 1))
           
            sprite.Position = New Vector2(sprite.Position.X + 1, 10)
            If sprite.Position.X > 600 Then sprite.Position = New Vector2(0, 10)
            sprite.BlendMode = BlendMode.Alpha
            App.Draw(sprite)

            sprite.Position = New Vector2(sprite.Position.X + 1, 100)
            sprite.BlendMode = BlendMode.Multiply
            App.Draw(sprite)

            ff += 1
            If Now.TimeOfDay.TotalMilliseconds - st >= 1000 Then
                fps = (ff / (Now.TimeOfDay.TotalMilliseconds - st) * 1000)

                'str2D.Dispose()      'Even if this line is commented out I get the crash.
                'str2D = New String2D(fps, fnt, 14)

                st = Now.TimeOfDay.TotalMilliseconds : ff = 0
            End If

            'App.Draw(str2D)        'No need to draw it...crash occures anyways.
            App.Display()
            App.DispatchEvents()
        End While

        str2D.Dispose()
        fnt.Dispose()
        fnt = Nothing
        str2D = Nothing
        App.Close
    End Sub

    Private Sub App_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles App.Closed
        doit = False
        'App.Close() '<- no need here. Releaseing Resources in Sub Main...
    End Sub

    Private Sub App_KeyPressed(ByVal sender As Object, ByVal e As SFML.Window.KeyEventArgs) Handles App.KeyPressed
        doit = False
        'App.Close() '<- no need here. Releaseing Resources in Sub Main...
    End Sub
End Module


Edit:
I compiled the .NET libs i found here: /branches/sfml2/dotnet/
I tried my little testprogram again...still same error. =(
Maybe someone can tell me what I am doing wrong? I uploaded everything I used for testing (Test-Project and the latestet SFML2 dotnet-library): http://www.itak.de/share/SFMLTest.rar

29

General / Just a question about the progress

« on: May 19, 2009, 12:26:54 am »

Hello.

I will start a new projekt next month and we are thinking about switching from SDL to SFML. As mentioned in several topics and in the todo-list there is a major issue with SFML crashing when the main program closes and you used drawtext (or however it's called...) before.
I myself would prefer to use SFML for that projekt but i wonder if that bug will be fixed during the next few days / weeks. I checked the todo-list and found out that the last edit was on 06 March =(. So, my question is if there is a chance that this bug will get fixed "soon" or if there is a work around for that crashing issue...
Does anyone know?

30

DotNet / Change RenderWindow's Title after creation...

« on: May 17, 2009, 09:38:23 pm »

Yup, then maybe consider this as a feature request...