#include "pch.h"
#include "app.h"
#include "canvas.h"
#include "renderer_gl/opengl_capabilities.h"

namespace {

[[nodiscard]] GLenum depth_test_state() noexcept
{
    return static_cast<GLenum>(pp::renderer::gl::depth_test_state());
}

[[nodiscard]] GLenum program_point_size_state() noexcept
{
    return static_cast<GLenum>(pp::renderer::gl::program_point_size_state());
}

[[nodiscard]] GLenum source_alpha_blend_factor() noexcept
{
    return static_cast<GLenum>(pp::renderer::gl::source_alpha_blend_factor());
}

[[nodiscard]] GLenum one_minus_source_alpha_blend_factor() noexcept
{
    return static_cast<GLenum>(pp::renderer::gl::one_minus_source_alpha_blend_factor());
}

[[nodiscard]] GLenum add_blend_equation() noexcept
{
    return static_cast<GLenum>(pp::renderer::gl::add_blend_equation());
}

}

void App::cmd_convert(std::string pano_path, std::string out_path)
{
    glDisable(depth_test_state());
    glEnable(program_point_size_state());
    glBlendFunc(source_alpha_blend_factor(), one_minus_source_alpha_blend_factor());
    glBlendEquation(add_blend_equation());

    Canvas* command_canvas = new Canvas;
    command_canvas->create(CANVAS_RES, CANVAS_RES);
    command_canvas->project_open_thread(pano_path);
    command_canvas->export_equirectangular_thread(out_path);
}
