Messages

1

Graphics / Re: GL_INVALID_OPERATION messages pop up when loading textures.

« on: February 23, 2020, 05:47:35 pm »

what SFML version do you use? i remember that the "glFlush()" were removed!!.

also, there is a potential bug in "loadTextures()", the sf::Texture object has tobe inside the nested for-loops. try to change it and see what gonna happen.

I am using SFML 2.5.1. I tried and It didn't worked. Also I did the same thing in another sfml program (same function and image) and it worked :/

It's probably caused when the textures get copied, which happen at the very least when you push back a texture into the vector, and also internally to the vector every time it resizes (which will get worse the bigger the vector gets). Storing a texture in a vector is also very prone to the white square problem. Consider perhaps using a vector of std::unique_ptr or maybe even some sort of resource holder such as this or this.

Ok i'll try

2

Graphics / GL_INVALID_OPERATION messages pop up when loading textures.

« on: February 23, 2020, 07:05:44 am »

Hello!

I've been working on a simple map editor, and I have this "loadTexture" function, the problem is that when I call it, I have this that pops up hundreds of times in my console:

(click to show/hide)

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.

Here is my loadTexture function:

(click to show/hide)

void LevelEditor::loadTextures(){
   sf::Texture texture;
   for (int i = 0; i <= 15; i++) {
      for (int j = 0; j <= 15; j++){
         texture.loadFromFile("Resources/tileset.png", sf::IntRect(16, 16, i, j));
         this->texture_vector.push_back(texture);
      }
   }
}

and my levelEditor class:

(click to show/hide)

class LevelEditor {
private:
   int level_width, level_height;
   std::string level;
   
   std::vector<sf::Texture> texture_vector{};
   sf::Sprite block_sprite;

public:
   LevelEditor();
   ~LevelEditor();

   void update();
   void draw(sf::RenderWindow &window);
   void handleEvents();

   void loadTextures();
   void loadMap(std::string filename);
        [...]

I tried to remove the " this->texture_vector.push_back(texture);" and when I do that, I no longer have the message. I also tried to reproduce in another sfml file the same thing:
a class with a std::vector<sf::Texture> and the same function, and everything works fine.

Thank you in advance for your answer because I really don't know what to do right now.