Messages

451

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 17, 2009, 03:41:13 am »

Got it to work by changing the RenderImage to an Image and CopyScreen() instead of the RenderImage functions.

452

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 15, 2009, 07:22:32 pm »

You do know that you are only drawing once?

Yes. I don't change what the screen shows after I draw.

453

Graphics / Freeing a sprite from memory

« on: November 15, 2009, 04:18:51 am »

You should use a vector of pointers to Missiles, then push_back(new missile Missile(constructorarguments));
When you exit the game, make a piece of code that iterates through the vector, deleting each Missile as you go, and then clear the vector at the end with vector.clear(). You can also create a function for this that you can run at any time to clear it out.

454

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 15, 2009, 02:55:39 am »

Code: [Select]

#include <SFML/Graphics.hpp>

int main(){
    sf::RenderWindow Window;
    Window.Create(sf::VideoMode(512, 512, 32), "Test");
    sf::Image Background;
    Background.LoadFromFile("Any512x512Image.png");
    sf::Sprite BG(Background);
    //sf::RenderImage Screen; // Uncomment this line and comment the definition ahead and Flush if you want to test both
    if (sf::Shader::IsAvailable()){
        sf::RenderImage Screen;
        Screen.Draw(BG);
        Screen.Display();
        Window.Draw(sf::Sprite(Screen.GetImage()));
        Window.Flush();
    }
    else
        Window.Draw(BG);
    Window.Display();
    sf::Event Event;
    while (Window.IsOpened()){
        while (Window.GetEvent(Event)){
            if (Event.Type == sf::Event::Closed)
                Window.Close();
            if (Event.Type == sf::Event::KeyPressed && Event.Key.Code == sf::Key::Escape)
                Window.Close();
        }
    }
    return EXIT_SUCCESS;
}
There's the code that does not work for me. It draws nothing.

455

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 14, 2009, 02:10:32 am »

Guess what? I just get a white screen. Why is this? When I replace the Window.Draw line with Window.Draw(BG); it works fine. When I use this code, it absolutely fails. What am I doing wrong? I'm drawing the BG to the RenderImage, Displaying the RenderImage, then drawing the RenderImage to the Screen, and I get White. :S

Your RenderImage instance gets destroyed after the call to Draw; but SFML delays the actual drawing until you call Window.Display(), and at this time the source image doesn't exist anymore.

Moved the sf::RenderImage's Declaration to outside the if statement, in the context of the Window.Display() code. Black screen. Moved it back inside and added a Window.Flush() to the end of the if statement. Black Screen.

456

General discussions / dukghasfgdsg Multiple Shader Fail

« on: November 13, 2009, 04:12:42 am »

So I am trying to make the screen draw two shaders, right? Here's the shader code in the Title Screen in Main.cpp of my repository(not committed yet):

Code: [Select]

       if (sf::Shader::IsAvailable()){
            Water.SetTexture("screen", sf::Shader::CurrentTexture);
            Water.SetParameter("time", Clock.GetElapsedTime()*1000.f);
            Blend.SetTexture("screen", sf::Shader::CurrentTexture);
            Blend.SetParameter("color", 0.5, 0.0, 0.5);
            Blend.SetParameter("alpha", 1.0);
            sf::RenderImage Screen;
            Screen.Draw(BG);
            Screen.Display();
            Window.Draw(sf::Sprite(Screen.GetImage()));
        }
Guess what? I just get a white screen. Why is this? When I replace the Window.Draw line with Window.Draw(BG); it works fine. When I use this code, it absolutely fails. What am I doing wrong? I'm drawing the BG to the RenderImage, Displaying the RenderImage, then drawing the RenderImage to the Screen, and I get White. :S

457

Graphics / Gray line when drawing an sprite

« on: November 13, 2009, 01:29:03 am »

Hmm I thought I was using SFML2.0, but I think it's 1.6 (I'm using the SVN trunk version).

Ok. This bug has been fixed in SFML 2.

My graphics card doesn't even have a name... It is an integrated one.

Ok, so the 10 FPS might just be your computer
However, one or two other users reported bad performances on Windows 7, and I still haven't found why.

I haven't had any performance troubles on Windows 7. Have those other people updated their drivers?

458

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 13, 2009, 01:26:35 am »

Here's our repository: http://mke.svn.sourceforge.net/viewvc/mke/
I tried to Shader sample, and it works fine, so I dunno what's going on.

It seems like clock() has a very low resolution on Linux. Using a sf::Clock solves the problem.

Alright then. Thanks for the help! I switched to sf::Clock and it works perfect!

On the shader sample, global fisheye Y coordinates are flipped for me. It doesn't do this with background, and I can't tell on flower.

459

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 12, 2009, 06:24:38 am »

I updated to SFML 1268, and the glitch with the tearing and blackness is gone, but I still have the lag.
Here's the demo with SFML 1268.
http://willhostforfood.com/access.php?fileid=93440
Use run.sh to use the local .so files.

I couldn't use the local .so files (my system has a problem and needs a modified version of SFML), but I tried shaders with the latest revision:
- the Shader sample runs perfectly
- I can see the lag in your application

Can you show your source code? Did you try the Shader sample?

Here's our repository: http://mke.svn.sourceforge.net/viewvc/mke/
I tried to Shader sample, and it works fine, so I dunno what's going on.

460

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 11, 2009, 11:10:30 pm »

float edge = sqrt(hEdge.rgb * hEdge.rgb + vEdge.rgb * vEdge.rgb);
That's some good coding right there.

?

The sqrt returns a vec3, since the value sent to it is a vec3. vec3s cannot be assigned to floats.

461

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 11, 2009, 10:34:11 pm »

Hello!
float edge = sqrt(hEdge.rgb * hEdge.rgb + vEdge.rgb * vEdge.rgb);
That's some good coding right there.

462

General / display Chinese characters ???

« on: November 07, 2009, 08:45:31 pm »

Don't define variables in headers, it's not safe nor sane.

Class members... ?

That would work, but he is not using class members, he is just defining the variables.

463

General / display Chinese characters ???

« on: November 07, 2009, 04:54:22 am »

Soo, what is your problem?

Don't define variables in headers, it's not safe nor sane.

464

General / Question about game structure

« on: November 07, 2009, 03:00:08 am »

Usually they are structured by "rooms", where you use a single variable to tell which room it is, and then choose the room function to run based on that. At least, that's how I (used to) do it.

465

General discussions / New Shader class in SFML 2 to replace PostFx

« on: November 07, 2009, 01:51:24 am »

I updated to SFML 1268, and the glitch with the tearing and blackness is gone, but I still have the lag.
Here's the demo with SFML 1268.
http://willhostforfood.com/access.php?fileid=93440
Use run.sh to use the local .so files.