#include <gearlib.h>

int main() {
    Window window = create_window(800, 600, "raytracing");
    glfwSwapInterval(0);
    enable_debugging();

    RenderBatch* surface = create_batch(sizeof(vec2), 6);
    surface->shader = load_shader_program(
            compile_shader("raycast.vert", GL_VERTEX_SHADER),
            compile_shader("raycast.frag", GL_FRAGMENT_SHADER), 0);

    batch_add_attrib(surface, (VertexAttrib){
        .type = GL_FLOAT, .size = sizeof(float), .count = 2
    });

    batch_bind_attribs(surface);

    vec2 vertices[] = {
        vec2(-1.0f, 1.0f), vec2(-1.0f, -1.0f), vec2(1.0f, -1.0f),
        vec2(1.0f, -1.0f), vec2(1.0f, 1.0f), vec2(-1.0f, 1.0f),
    };

    glNamedBufferSubData(surface->vbo, 0, surface->vertex_size * 6, vertices);
    glUseProgram(surface->shader);

    float start_time = glfwGetTime();
    float elapsed_time = 0.0f;

    uint32_t ssbo;
    glCreateBuffers(1, &ssbo);
    glNamedBufferStorage(ssbo, sizeof(int), NULL, GL_DYNAMIC_STORAGE_BIT);
    glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ssbo);

    int ray_count = 0;

    while(!glfwWindowShouldClose(window)) {
        //glNamedBufferSubData(ssbo, 0, sizeof(int), &ray_count);
        int w, h;
        glfwGetWindowSize(window, &w, &h);
        float aspect_ratio = (float)w / (float)h;
        glUniform1f(0, aspect_ratio); 
        glUniform1f(1, sin(elapsed_time));

        renderer_draw(surface->vao, 6);

        glfwSwapBuffers(window);
        glfwPollEvents();

        float end_time = glfwGetTime();
        float frame_time = end_time - start_time;
        start_time = end_time;

        elapsed_time += frame_time;

        float fps = 1.0f / frame_time;
        printf("fps: %f\n", fps);
    }

    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
}