Texture loaded , drawn , but not shown on the screen

[traxys]

I am coding a game , and just started some of the graphical part so I just started to try using SFML for it , but I had a bug where a sprite would not show on screen, so I tought that ther was bugs deep into my code , and so I made a fresh project with what could be considered like the most basic code to show a Sprite , but it is doing the same thing , and I can't understand why...

     Here is the basic code(even if you could guess it x) ):

#include <iostream>
#include <SFML/Graphics.hpp>

using namespace std;
using namespace sf;

int main(){
    RenderWindow window(VideoMode(500,500),"Test");

    Texture lavaFlow;
    lavaFlow.loadFromFile("lavaFlow.png");

    Sprite lavaFlowSprite;
    lavaFlowSprite.setTexture(lavaFlow);

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

        while(window.pollEvent(event)){
            if(event.type == Event::Closed){
                window.close();
            }
            window.clear();

            window.draw(lavaFlowSprite);

            window.display();
        }
    }
    return 0;
}

And few things to know , since I am compiling on Debug , some of the error shows , so I know that the Image has been loaded , and the image was firts in jpeg so I thank that it was maybe a type problem , so I converted it into png

Thanks to anyone who could help me !

[eXpl0it3r]

Try

setTexture(LavaFlow, true)

That will reset the texture rect. If you never set the texture rect, nothing will be "cut out" from the texture.

[Geheim]

window.clear();

window.draw(lavaFlowSprite);

window.display();

This stuff should not be in the event loop

[traxys]

Where should I put it for it to be refersehd  ?

[traxys]

@eXpl0it3r

This doesn't do anything : My screen is still a big black box

[eXpl0it3r]

Where should I put it for it to be refersehd  ?

If you don't know what the event loop is and since you set things up wrong, you should definitely read the official tutorials, it's all explained there.

[traxys]

Ok so looking at my code I understood the problem of it (for the event loop) , yeah my thing was in the wrong loop because it was being refreshed only on events so I bumped it little down , in the while window.isOpen() loop , but I still have a big black screen ........

Looking at the tutorials I saw the one on drawing shapes , so should I draw A ssquare and apply a texture to it instead ?

EDIT: Nevermind RectangleShape has the same problem, could it be the texture not loading properly ?

[Jesper Juhl]

I'll just leave this here: https://github.com/SFML/SFML/wiki/FAQ#tr-grl-minimal
Reduce your code to a minimal example and you are likely to spot the bug. You are also likely to have a better piece of code to post and ask questions about that people will actually bother to read.

Edit: sorry, I meant this for a different thread. Still can't hurt though 
Anyway, you can check if the texture loaded OK.

[traxys]

Is there anything for checking that the texture is loaded ? Not going throught a sprite , just cheking if there is a texture like with checking a size that is the size of the file you defined it with (in pixel) or if a pixel RGB is equal to the one on the original picture , because my code is nearrly the minimal , + texture&sprite defined + clean/draw/display

[Jesper Juhl]

sf::Texture's loadFromFile() member function returns a bool. You could start by checking that.

[traxys]

The loading seems to be fine because this :

    if(!lavaFlow.loadFromFile("lavaFlow.png")){
        cout<<"Error"<<endl;
    }

doesn't print anything , but is the loading of a picture wich is 260*260 long take some time , or is it like 0.1 sec ?

EDIT : Nevermind ,even if the loading time was a bit long , It would not be over 23 minutes .....

[traxys]

Ok know I am trying to figure out if the the texture is correctly put on a Sprite , but I can't figure out how to checks it , anyone has an idea how could I do it ?

[eXpl0it3r]

If you draw a simple shape and it doesn't show up something is wrong to begin with.

Is your graphics driver uptodate?
What's your GPU?

[traxys]

My drivers could be wrong because I had problemens with them before(With a GPU that was not seen by my OS), but I have built SFML from the sources with MinGW , could It generate some problems ? And I am on a Laptop with the Graphical part of a CPU and a Radeon HD 7600M with up to date drivers. I am going to try deactivating one or the other.

[traxys]

Ok so If I have just my GPU activated I get a SIGSEGV in the SFML code Oo :

#0 ??   ?? () (??:??)
#1 68ED4511   sf::RenderTarget::applyBlendMode(this=0x28fcc0, mode=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\RenderTarget.cpp:431)
#2 68ED413C   sf::RenderTarget::resetGLStates(this=0x28fcc0) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\RenderTarget.cpp:362)
#3 68ED39C9   sf::RenderTarget::draw(this=0x28fcc0, vertices=0x5047f8, vertexCount=32, type=sf::TrianglesFan, states=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\RenderTarget.cpp:211)
#4 68EDD30B   sf::VertexArray::draw(this=0x28fc48, target=..., states=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\VertexArray.cpp:147)
#5 68ED3963   sf::RenderTarget::draw(this=0x28fcc0, drawable=..., states=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\RenderTarget.cpp:185)
#6 68EDA437   sf::Shape::draw(this=0x28fb7c, target=..., states=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\Shape.cpp:219)
#7 68ED3963   sf::RenderTarget::draw(this=0x28fcc0, drawable=..., states=...) (C:\Users\qbsec_000\Desktop\SFML\src\SFML\Graphics\RenderTarget.cpp:185)
#8 00401922   main() (C:\Users\qbsec_000\Traxys\Documents\Cpp\Programms\SFMLTest\main.cpp:24)

And AMD Catalyst says now that My drivers are bugged.....

EDIT : When I deactivated my AMD Car my laptop did a BSOD