ex04_varyings.cpp

#include <application.hpp>
#include <shader.hpp>


class VaryingsApplication : public our::Application {

    our::ShaderProgram program;
    GLuint vertex_array = 0;

    our::WindowConfiguration getWindowConfiguration() override {
        return { "Varyings", {1280, 720}, false };
    }

    void onInitialize() override {
        program.create();
        program.attach("assets/shaders/ex04_varyings/colored_triangle.vert", GL_VERTEX_SHADER);
        program.attach("assets/shaders/ex04_varyings/varying_color.frag", GL_FRAGMENT_SHADER);
        program.link();

        glGenVertexArrays(1, &vertex_array);

        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    }

    void onDraw(double deltaTime) override {
        glClear(GL_COLOR_BUFFER_BIT);
        glUseProgram(program);
        glBindVertexArray(vertex_array);
        glDrawArrays(GL_TRIANGLES, 0, 3);
        glBindVertexArray(0);
    }

    void onDestroy() override {
        program.destroy();
        glDeleteVertexArrays(1, &vertex_array);
    }

};

int main(int argc, char** argv) {
    return VaryingsApplication().run();
}