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General / An internal OpenGL call failed in Texture.cpp(98).

« on: March 07, 2021, 09:11:19 pm »

Hi everyone

I have this code:

#include "SFML/Graphics.hpp"
#include <iostream>
using namespace std;
using namespace sf;


struct sfButton
{
    int ButtonSprite;
    Text ButtonText;
};


int main()
{
    int ScreenWide = 500;
    int ScreenHeight = 500;
    int FrameLimit = 60;
    RenderWindow window;
    srand(time(NULL));
    setlocale(LC_ALL, "");
    window.create(VideoMode(500,500,32),"Window");
    window.setActive(true);
    window.setPosition(Vector2i(90,0));
    window.setFramerateLimit(60);
    Font Calibri;
    Calibri.loadFromFile("Calibri Regular.ttf");

    sfButton A;
    A.ButtonText.setCharacterSize(15);
    A.ButtonText.setFillColor(Color(255,255,255));
    A.ButtonText.setPosition(Vector2f(0,0));
    A.ButtonText.setFont(Calibri);
    A.ButtonText.setString("x");


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

        }
        if (event.type == Event::Closed || (Keyboard::isKeyPressed(Keyboard::Escape)))
            window.close();

        window.clear(Color(50,51,55));
        window.draw(A.ButtonText);
        window.display();
    }
}
 

and when i run it i have this message:

"An internal OpenGL call failed in Texture.cpp(98).
Expression:
   glFlush()
Error description:
   GL_INVALID_OPERATION
   The specified operation is not allowed in the current state.

An internal OpenGL call failed in Texture.cpp(98).
Expression:
   glFlush()
Error description:
   GL_INVALID_OPERATION
   The specified operation is not allowed in the current state."

But when I remove "int ButtonSprite;" form "sfButton" program compiles correct and I have no errors.
Can anybody tell me why is this happening and how to fix it?