ffuuuu.c

struct mat4f
gfx_camera_get_combined(struct gfx_camera* camera)
{
    assert(camera);

    struct mat4f ortho;
    struct mat4f translation;
    struct mat4f zoom;

    float vw   = camera->viewport.width;
    float vh   = camera->viewport.height;
    float x    = camera->position.x;
    float y    = camera->position.y;
    float z    = camera->position.z;

    ortho = mat4f_ortho(
        -vw / 2,
        vw / 2,
        -vh / 2,
        vh / 2,
        camera->near,
        camera->far
    );

    translation = mat4f_translation(-x, -y, -z);
    zoom        = mat4f_zoom(camera->zoom, camera->zoom, camera->zoom);

    return mat4f_mul(ortho, mat4f_mul(zoom, translation));
}