source: trunk/tests/md2_test/nv_md2_test.cc

#include <nv/gfx/keyframed_mesh.hh>
#include <nv/gl/gl_device.hh>
#include <nv/gfx/image.hh>
#include <nv/interface/context.hh>
#include <nv/interface/window.hh>
#include <nv/interface/mesh_loader.hh>
#include <nv/io/c_file_system.hh>
#include <nv/formats/md2_loader.hh>
#include <nv/core/profiler.hh>
#include <nv/core/logging.hh>
#include <nv/core/logger.hh>
#include <nv/core/math.hh>
#include <nv/core/time.hh>
#include <nv/core/string.hh>
#include <glm/gtx/rotate_vector.hpp>

class application
{
public:
        application();
        bool initialize();
        bool run();
        ~application();
protected:
        nv::device*  m_device;
        nv::window*  m_window;
        nv::context* m_context;
        nv::texture  m_diffuse;
        nv::program  m_program;

        nv::clear_state   m_clear_state;
        nv::render_state  m_render_state;
        nv::scene_state   m_scene_state;

        nv::mesh_data*       m_mesh_data;
        nv::keyframed_mesh*  m_mesh;
        nv::animation_entry* m_animation;
};

application::application()
{
        NV_PROFILE( "app_construct" );
        m_device  = new nv::gl_device();
        m_window  = m_device->create_window( 800, 600, false );
        m_context = m_window->get_context();

        nv::sampler sampler( nv::sampler::LINEAR, nv::sampler::REPEAT );
        nv::image_data* data = m_device->create_image_data( "data/manc.png" );
        m_diffuse  = m_device->create_texture( data, sampler );
        delete data;

        m_clear_state.buffers = nv::clear_state::COLOR_AND_DEPTH_BUFFER;
        m_render_state.depth_test.enabled = true;
        m_render_state.culling.enabled    = true;
        m_render_state.blending.enabled   = false;
        m_render_state.blending.src_rgb_factor   = nv::blending::SRC_ALPHA;
        m_render_state.blending.dst_rgb_factor   = nv::blending::ONE_MINUS_SRC_ALPHA;
        m_render_state.blending.src_alpha_factor = nv::blending::SRC_ALPHA;
        m_render_state.blending.dst_alpha_factor = nv::blending::ONE_MINUS_SRC_ALPHA;
}

bool application::initialize()
{
        NV_PROFILE( "app_initialize" );
        m_program = m_device->create_program( nv::slurp( "md2.vert" ), nv::slurp( "md2.frag" ) );

        nv::md2_loader* loader;
        {
                NV_PROFILE("loader->load");
                nv::c_file_system fs;
                nv::stream* mesh_file = fs.open( "data/manc.md2" );
                loader = new nv::md2_loader();
                loader->load( *mesh_file );
                m_mesh_data = loader->release_mesh_data();
                delete mesh_file;
                delete loader;
        }

        {
                NV_PROFILE("create_mesh");
                m_mesh      = new nv::keyframed_mesh_gpu( m_context, m_mesh_data, nullptr );
        }

        return true;
}

bool application::run()
{
        nv::profiler::pointer()->log_report(); 
        NV_PROFILE( "app_run" );
        int keypress = 0;

        nv::uint32 ticks   = m_device->get_ticks();
        nv::uint32 last_ticks;
        nv::fps_counter_class< nv::system_us_timer > fps_counter;

        m_animation = new nv::animation_entry( "", true, 5, 0.0f, m_mesh->get_max_frames()-1 );
        m_mesh->run_animation( m_animation );

        while(!keypress) 
        {
                last_ticks = ticks;
                ticks      = m_device->get_ticks();
                nv::uint32 elapsed = ticks - last_ticks;
                m_context->clear( m_clear_state );
                glm::vec3 eye = glm::rotate( glm::vec3( 100.0f, 25.0f, 0.0f ), (ticks / 20.f), glm::vec3( 0.0,1.0,0.0 ) );

                m_scene_state.set_model( nv::mat4(1.0f) );
                m_scene_state.get_camera().set_lookat(eye, glm::vec3(0.0f, 25.0f, 0.0f), glm::vec3(0.0, 1.0, 0.0));
                m_scene_state.get_camera().set_perspective(60.0f, 1.0f*800.0f/600.0f, 0.1f, 1000.0f);

                m_context->bind( m_diffuse, nv::TEX_DIFFUSE );
                m_device->set_opt_uniform( m_program, "light_position", glm::vec3(120.0, 120.0, 0) );
                m_device->set_opt_uniform( m_program, "light_diffuse",  glm::vec4(1.0,1.0,1.0,1.0) );
                m_device->set_opt_uniform( m_program, "light_specular", glm::vec4(1.0,1.0,1.0,1.0) );
                m_mesh->update_animation( m_animation, ticks );
                m_mesh->update( m_program );
                m_context->draw( nv::TRIANGLES, m_render_state, m_scene_state, m_program, m_mesh->get_vertex_array(), m_mesh->get_index_count() );
                m_window->swap_buffers();

                nv::io_event event;
                while(m_window->poll_event(event)) 
                {      
                        switch (event.type) 
                        {
                        case nv::EV_QUIT:
                                keypress = 1;
                                break;
                        case nv::EV_KEY:
                                if (event.key.pressed)
                                {
                                        switch (event.key.code) 
                                        {
                                        case nv::KEY_ESCAPE : keypress = 1; break;
                                        case nv::KEY_F1 : nv::profiler::pointer()->log_report(); break;
                                        default: break;
                                        }
                                }
                                break;
                        default: break;
                        }
                }
                fps_counter.tick();
        }
        return true;
}

application::~application()
{
        m_device->release( m_program );
        delete m_mesh_data;
        delete m_mesh;
        delete m_animation;
        m_device->release( m_diffuse );
        delete m_window;
        delete m_device;
}


int main(int, char* [])
{
        nv::logger log(nv::LOG_TRACE);
        log.add_sink( new nv::log_file_sink("log.txt"), nv::LOG_TRACE );
        log.add_sink( new nv::log_console_sink(), nv::LOG_TRACE );
        
        NV_LOG( nv::LOG_NOTICE, "Logging started" );
        application app;
        if ( app.initialize() )
        {
                app.run();
        }
        NV_LOG( nv::LOG_NOTICE, "Logging stopped" );

        return 0;
}