> For the complete documentation index, see [llms.txt](https://stacked-rwx.gitbook.io/public/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stacked-rwx.gitbook.io/public/programming/opengl-no-c++.md).

# OpenGL no C++

<figure><img src="/files/Cxlj7wKb7Y8iC0AqEZ7T" alt=""><figcaption></figcaption></figure>

Código:<br>

```cpp
#include <glfw3.h>
#include <iostream>

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "SoftGL", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    std::cout << "Renderizando triangulo.." << std::endl;

    /* Make the window's context current */
    glfwMakeContextCurrent(window);

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {

        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();

        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT);
        
        // Ativador das estruturas que serão renderizadas na tela | GL_LINE -> apenas desenha linhas e não
        // preenche o background da imagem que está sendo renderizada.
        // Caso for renderizar a imagem com o background preenchido, apenas remova o GL_LINE
        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

        glColor3f(0.0, 1.0, 1.0);
        glBegin(GL_TRIANGLES);
            glVertex3f(0.0, 0.5, 0.0);
            glVertex3f(-0.5, -0.5, 0.0);
            glVertex3f(0.5, -0.5, 0.0);
        glEnd();
    }

    glfwTerminate();
    return 0;
}
```

Links de referência:\
<https://www.glfw.org/>\
<https://www.youtube.com/watch?v=IejsKqJG9dM&list=PLVRDPs83ZhmcXYuktF3r2hfyoabg_EVPO&index=1>\
<https://www.cs.princeton.edu/courses/archive/fall99/cs426/lectures/raster/tsld017.htm>