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/*
(c) 2004-14 Filip Stoklas, aka FipS, www.4FipS.com
THIS CODE IS FREE - LICENSED UNDER THE MIT LICENSE
*/

#include "fs_app_host.h"
#include "fs_gfx_core.h"
#include "fs_gfx_extra.h"
#include "fs_math_func.h"
#include "fs_data_duck.cpp"

using namespace fs;

class test_app final : public app::host
{
 public:

    test_app() {}

 private:

    FS_NON_COPYABLE(test_app);

    void on_config(app::host_config &cfg) override final
    {
        cfg.title = "fs_test_geometry | 4FIPS.COM";
    }

    void on_init() override final
    {
        FS_TRACE(("[o] TEST: fs_test_geometry"));

        auto &g = graphics();

        gfx::geometry_view gv(g_duck_geom_data);
        _ctx.geom = std::move(gfx::create_from_view(g, gv));

        gfx::texture_view tv(g_duck_tex_data);
        _ctx.tex = std::move(gfx::create_from_view(g, tv));

        g.param_dict("s_tex", gfx::param_type::texture).set(*_ctx.tex);
        g.binding().rebind_geometry(*_ctx.geom);
        g.binding().rebind_shader(gfx_resources().shader(gfx::resource_db::shader_id::color_tex));
    }

    void on_deinit() override final
    {
        _ctx.reset();
    }

    void on_draw(gfx::canvas &cvs) override final
    {
        namespace m = fs::math;
        auto &g = graphics();

        const auto w = float(state().width);
        const auto h = float(state().height);
        const auto ratio = w / (h > 0.f ? h : 1.f);
        const auto proj = m::mat4_make_perspective(45.f, ratio, 1.f, 1000.f);
        const auto view = m::mat4_make_xyz(0.f, -80.f, -300.f);
        const auto model = m::mat4_make_rot_y(float(state().frame_time));

        g.param_dict("u_mvp", gfx::param_type::matrix4_f).set(proj * view * model);
        g.draw(gfx::primitive_type::triangles);
    }

    struct context
    {
        std::unique_ptr<gfx::geometry> geom;
        std::unique_ptr<gfx::texture> tex;

        void reset()
        {
            geom.reset();
            tex.reset();
        }        

    } _ctx;
};

FS_APP_HOST_MAIN(test_app);