sf::RenderTexture problem

[fr33k]

Is hope it is not normal for sf::RenderTexture:

Can I fix it somehow, or what I'm doing wrong ?

Graphics Card: Radeon HD 5570
Lastest drivers.

#include <SFML/Graphics.hpp>

int main()
{
    sf::RenderWindow app(sf::VideoMode(800,600),"RT Test");
    // Load a sprite to display
    sf::Texture texture;
    if (!texture.loadFromFile("cb.bmp"))
        return EXIT_FAILURE;
    sf::Sprite sprite(texture);

    sf::RenderTexture rt;
    rt.create(800,600);

    sf::Sprite surface(rt.getTexture());

        // Start the game loop
    while (app.isOpen())
    {
        // Process events
        sf::Event event;
        while (app.pollEvent(event))
        {
            // Close window : exit
            if (event.type == sf::Event::Closed)
                app.close();
        }
        sprite.move(0.1f,0);
        // app.resetGLStates(); // with this, all work
        rt.clear(sf::Color::White);
        rt.draw(sprite);
        rt.display();


        // Clear screen
        app.clear();

        // Draw the sprite
        app.draw(surface);

        // Update the window
        app.display();
    }

    return 0;
}
 

[Hapax]

Why not post the complete code? It can't be much more than what you posted 

I just put this in a main() with the require #include and created app as a render window. Not sure why you didn't just post those lines too. It runs fine and doesn't show the artifacts you demonstrated in your video. Which version of SFML are you using, although I would've first thought it was a driver issue?

Worst.texture.ever.

[fr33k]

Worst.texture.ever.

Just Code::Blocks SFML project, for test. 
I'm using SFML 2.1

[Laurent]

You can try the latest sources, we made fixes that could solve your problem.

[fr33k]

Nope, I still have the same problem. 

[AlexAUT]

Try to reset the openGL states before you are drawing/clearing the rendertexture. (I have the same issue)



AlexAUT

[fr33k]

Try to reset the openGL states before you are drawing/clearing the rendertexture. (I have the same issue)

It's working! 
Thanks Alex.

[Laurent]

Can you show the working code? It could help us to solve this problem.

[fr33k]

Why not.

#ifdef SFML_STATIC
#pragma comment(lib, "glew.lib")
#pragma comment(lib, "freetype.lib")
#pragma comment(lib, "jpeg.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "winmm.lib")
#pragma comment(lib, "gdi32.lib")  
#endif // SFML_STATIC

#include <SFML/Graphics.hpp>
#include <SFML\OpenGL.hpp>
#include "include/Defaults.hpp"
#include "include/Debug.hpp"
#include "include/FPS.h"
#include "include/Timer.hpp"
#include "include/Camera.hpp"
#include "include/Animation.hpp"
#include "include/Collision.hpp"
#include "include/Object.hpp"
#include "include/Player.hpp"
#include "include/Scene.hpp"


int main()
{
        sf::RenderWindow window(sf::VideoMode(Default::windowWidth, Default::widnowHeight),
                                                        Default::windowTitle, Default::windowStyle);
        window.setFramerateLimit(60);

        Scene test(sf::Vector2f(400,300));
        sf::Texture * tex = new sf::Texture();
        tex->loadFromFile("gfx/test.png");
        Animation anim;
        anim.setImage(tex, 64);
        anim.setOrigin(32, 32);
        Player hero(sf::Vector2f(64,64),anim);
        test.add(&hero);



        while (window.isOpen())
        {
                sf::Event event;

                while (window.pollEvent(event))
                {
                        if (event.type == sf::Event::Closed)
                                window.close();
                        hero.eventUpdate(event);
                }
                FPS::update();
                window.resetGLStates();
                hero.update(FPS::dt);
                window.clear(sf::Color::Black);
                test.draw(window);
                window.display();
        }

        delete tex;
        return 0;
}
 

Scene::Scene(sf::Vector2f Size)
{
        previous = NULL; // previous scene pointer
        next = NULL;
        name = "";
        this->Size = Size;
        camera.setCenter(Default::windowWidth / 2, Default::widnowHeight / 2);
        surface.create(Size.x,Size.y, true); // sf::RenderTexture
        surfaceRenderer.setPosition(0, 0); // sprite for render sf::RenderTexture
        surfaceRenderer.setTexture(surface.getTexture());
}
//...
void Scene::draw(sf::RenderWindow & window)
{
        surface.clear(sf::Color::White);
        surface.draw(objects.back()->getAnimation());
        surface.display();
       
        window.draw(surfaceRenderer);
}
 

[Laurent]

The working version of the code you posted previously would be more helpful

[fr33k]

It's the same as in first post, but before app.clear() line, I wrote app.resetGLStates() as Alex proposed.
EDIT: I edited first post.

[Nexus]

By the way, you should not do that:

sf::Texture * tex = new sf::Texture();
... // big amount of code
delete tex;

The reason is that if you later add a return statement in between, or a function throws an exception, you will have memory leaks.

Instead, use RAII:

sf::Texture tex;
... // big amount of code

[AlexAUT]

I think this should be the same problem as described here: http://en.sfml-dev.org/forums/index.php?topic=14110



AlexAUT

[fr33k]

Thanks Nexus, good to know about RAII .
EDIT: First video clip is without glResetStates(), second with.

[Hapax]

Good to see you fixed the problem! 

Just for reporting of this problem, I'm using Radeon HD 5450 and it didn't require the "fix".