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maszyna/openglrenderer.h

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/*
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
*/
#pragma once
#include "renderer.h"
#include "opengllight.h"
#include "openglcamera.h"
#include "openglparticles.h"
#include "openglskydome.h"
#include "openglprecipitation.h"
#include "lightarray.h"
#include "scene.h"
#include "simulationenvironment.h"
#include "MemCell.h"
#define EU07_USE_PICKING_FRAMEBUFFER
//#define EU07_USE_DEBUG_SHADOWMAP
//#define EU07_USE_DEBUG_CABSHADOWMAP
//#define EU07_USE_DEBUG_CAMERA
//#define EU07_USE_DEBUG_SOUNDEMITTERS
//#define EU07_USEIMGUIIMPLOPENGL2
//#define EU07_DISABLECABREFLECTIONS
// bare-bones render controller, in lack of anything better yet
class opengl_renderer : public gfx_renderer {
public:
// types
// constructors
opengl_renderer() = default;
// destructor
~opengl_renderer() { gluDeleteQuadric( m_quadric ); }
// methods
bool
Init( GLFWwindow *Window ) override;
// main draw call. returns false on error
bool
Render() override;
inline
float
Framerate() override { return m_framerate; }
// geometry methods
// NOTE: hands-on geometry management is exposed as a temporary measure; ultimately all visualization data should be generated/handled automatically by the renderer itself
// creates a new geometry bank. returns: handle to the bank or NULL
gfx::geometrybank_handle
Create_Bank() override;
// creates a new geometry chunk of specified type from supplied vertex data, in specified bank. returns: handle to the chunk or NULL
gfx::geometry_handle
Insert( gfx::vertex_array &Vertices, gfx::geometrybank_handle const &Geometry, int const Type ) override;
// replaces data of specified chunk with the supplied vertex data, starting from specified offset
bool
Replace( gfx::vertex_array &Vertices, gfx::geometry_handle const &Geometry, int const Type, std::size_t const Offset = 0 ) override;
// adds supplied vertex data at the end of specified chunk
bool
Append( gfx::vertex_array &Vertices, gfx::geometry_handle const &Geometry, int const Type ) override;
// provides direct access to vertex data of specfied chunk
gfx::vertex_array const &
Vertices( gfx::geometry_handle const &Geometry ) const override;
// material methods
material_handle
Fetch_Material( std::string const &Filename, bool const Loadnow = true ) override;
void
Bind_Material( material_handle const Material, TSubModel *sm = nullptr ) override;
opengl_material const &
Material( material_handle const Material ) const override;
// shader methods
auto Fetch_Shader( std::string const &name ) -> std::shared_ptr<gl::program> override;
// texture methods
texture_handle
Fetch_Texture( std::string const &Filename, bool const Loadnow = true, GLint format_hint = GL_SRGB_ALPHA ) override;
void
Bind_Texture( texture_handle const Texture ) override;
void
Bind_Texture( std::size_t const Unit, texture_handle const Texture ) override;
opengl_texture &
Texture( texture_handle const Texture ) override;
opengl_texture const &
Texture( texture_handle const Texture ) const override;
// utility methods
void
Pick_Control_Callback( std::function<void( TSubModel const * )> Callback ) override;
void
Pick_Node_Callback( std::function<void( scene::basic_node * )> Callback ) override;
TSubModel const *
Pick_Control() const override { return m_pickcontrolitem; }
scene::basic_node const *
Pick_Node() const override { return m_picksceneryitem; }
glm::dvec3
Mouse_Position() const override { return m_worldmousecoordinates; }
// maintenance methods
void
Update( double const Deltatime ) override;
void
Update_Pick_Control() override;
void
Update_Pick_Node() override;
glm::dvec3
Update_Mouse_Position() override;
// debug methods
std::string const &
info_times() const override;
std::string const &
info_stats() const override;
// members
GLenum static const sunlight { GL_LIGHT0 };
std::size_t m_drawcount { 0 };
private:
// types
enum class rendermode {
none,
color,
shadows,
cabshadows,
reflections,
pickcontrols,
pickscenery
};
enum textureunit {
helper = 0,
shadows,
normals,
diffuse
};
struct debug_stats {
int dynamics { 0 };
int models { 0 };
int submodels { 0 };
int paths { 0 };
int traction { 0 };
int shapes { 0 };
int lines { 0 };
int particles { 0 };
int drawcalls { 0 };
};
using section_sequence = std::vector<scene::basic_section *>;
using distancecell_pair = std::pair<double, scene::basic_cell *>;
using cell_sequence = std::vector<distancecell_pair>;
struct renderpass_config {
opengl_camera camera;
rendermode draw_mode { rendermode::none };
float draw_range { 0.0f };
};
struct units_state {
bool diffuse { false };
bool shadows { false };
bool reflections { false };
};
typedef std::vector<opengl_light> opengllight_array;
// methods
void
Disable_Lights();
void
setup_pass( renderpass_config &Config, rendermode const Mode, float const Znear = 0.f, float const Zfar = 1.f, bool const Ignoredebug = false );
void
setup_matrices();
void
setup_drawing( bool const Alpha = false );
void
setup_units( bool const Diffuse, bool const Shadows, bool const Reflections );
void
setup_shadow_map( GLuint const Texture, glm::mat4 const &Transformation );
void
setup_shadow_color( glm::vec4 const &Shadowcolor );
void
setup_environment_light( TEnvironmentType const Environment = e_flat );
void
switch_units( bool const Diffuse, bool const Shadows, bool const Reflections );
// helper, texture manager method; activates specified texture unit
void
select_unit( GLint const Textureunit );
// runs jobs needed to generate graphics for specified render pass
void
Render_pass( rendermode const Mode );
// creates dynamic environment cubemap
bool
Render_reflections();
bool
Render( world_environment *Environment );
void
Render( scene::basic_region *Region );
void
Render( section_sequence::iterator First, section_sequence::iterator Last );
void
Render( cell_sequence::iterator First, cell_sequence::iterator Last );
void
Render( scene::shape_node const &Shape, bool const Ignorerange );
void
Render( TAnimModel *Instance );
bool
Render( TDynamicObject *Dynamic );
bool
Render( TModel3d *Model, material_data const *Material, float const Squaredistance, Math3D::vector3 const &Position, glm::vec3 const &Angle );
bool
Render( TModel3d *Model, material_data const *Material, float const Squaredistance );
void
Render( TSubModel *Submodel );
void
Render( TTrack *Track );
void
Render( scene::basic_cell::path_sequence::const_iterator First, scene::basic_cell::path_sequence::const_iterator Last );
bool
Render_cab( TDynamicObject const *Dynamic, float const Lightlevel, bool const Alpha = false );
void
Render( TMemCell *Memcell );
void
Render_particles();
void
Render_precipitation();
void
Render_Alpha( scene::basic_region *Region );
void
Render_Alpha( cell_sequence::reverse_iterator First, cell_sequence::reverse_iterator Last );
void
Render_Alpha( TAnimModel *Instance );
void
Render_Alpha( TTraction *Traction );
void
Render_Alpha( scene::lines_node const &Lines );
bool
Render_Alpha( TDynamicObject *Dynamic );
bool
Render_Alpha( TModel3d *Model, material_data const *Material, float const Squaredistance, Math3D::vector3 const &Position, glm::vec3 const &Angle );
bool
Render_Alpha( TModel3d *Model, material_data const *Material, float const Squaredistance );
void
Render_Alpha( TSubModel *Submodel );
void
Update_Lights( light_array &Lights );
bool
Init_caps();
glm::vec3
pick_color( std::size_t const Index );
std::size_t
pick_index( glm::ivec3 const &Color );
// members
GLFWwindow *m_window { nullptr };
gfx::geometrybank_manager m_geometry;
material_manager m_materials;
texture_manager m_textures;
opengl_light m_sunlight;
opengllight_array m_lights;
opengl_skydome m_skydomerenderer;
opengl_precipitation m_precipitationrenderer;
opengl_particles m_particlerenderer; // particle visualization subsystem
/*
float m_sunandviewangle; // cached dot product of sunlight and camera vectors
*/
gfx::geometry_handle m_billboardgeometry { 0, 0 };
texture_handle m_glaretexture { -1 };
texture_handle m_suntexture { -1 };
texture_handle m_moontexture { -1 };
texture_handle m_reflectiontexture { -1 };
texture_handle m_smoketexture { -1 };
GLUquadricObj *m_quadric { nullptr }; // helper object for drawing debug mode scene elements
// TODO: refactor framebuffer stuff into an object
bool m_framebuffersupport { false };
#ifdef EU07_USE_PICKING_FRAMEBUFFER
GLuint m_pickframebuffer { 0 };
GLuint m_picktexture { 0 };
GLuint m_pickdepthbuffer { 0 };
#endif
// main shadowmap resources
int m_shadowbuffersize { 2048 };
GLuint m_shadowframebuffer { 0 };
GLuint m_shadowtexture { 0 };
#ifdef EU07_USE_DEBUG_SHADOWMAP
GLuint m_shadowdebugtexture{ 0 };
#endif
#ifdef EU07_USE_DEBUG_CABSHADOWMAP
GLuint m_cabshadowdebugtexture{ 0 };
#endif
glm::mat4 m_shadowtexturematrix; // conversion from camera-centric world space to light-centric clip space
// cab shadowmap resources
GLuint m_cabshadowframebuffer { 0 };
GLuint m_cabshadowtexture { 0 };
glm::mat4 m_cabshadowtexturematrix; // conversion from cab-centric world space to light-centric clip space
// environment map resources
GLuint m_environmentframebuffer { 0 };
GLuint m_environmentcubetexture { 0 };
GLuint m_environmentdepthbuffer { 0 };
bool m_environmentcubetexturesupport { false }; // indicates whether we can use the dynamic environment cube map
int m_environmentcubetextureface { 0 }; // helper, currently processed cube map face
double m_environmentupdatetime { 0.0 }; // time of the most recent environment map update
glm::dvec3 m_environmentupdatelocation; // coordinates of most recent environment map update
int m_helpertextureunit { GL_TEXTURE0 };
int m_shadowtextureunit { GL_TEXTURE1 };
int m_normaltextureunit { GL_TEXTURE2 };
int m_diffusetextureunit{ GL_TEXTURE3 };
units_state m_unitstate;
unsigned int m_framestamp; // id of currently rendered gfx frame
float m_framerate;
double m_updateaccumulator { 0.0 };
// double m_pickupdateaccumulator { 0.0 };
std::string m_debugtimestext;
std::string m_pickdebuginfo;
debug_stats m_debugstats;
std::string m_debugstatstext;
glm::vec4 m_baseambient { 0.0f, 0.0f, 0.0f, 1.0f };
glm::vec4 m_shadowcolor { colors::shadow };
float m_fogrange { 2000.f };
// TEnvironmentType m_environment { e_flat };
float m_specularopaquescalefactor { 1.f };
float m_speculartranslucentscalefactor { 1.f };
bool m_renderspecular{ false }; // controls whether to include specular component in the calculations
renderpass_config m_renderpass; // parameters for current render pass
section_sequence m_sectionqueue; // list of sections in current render pass
cell_sequence m_cellqueue;
renderpass_config m_colorpass; // parametrs of most recent color pass
renderpass_config m_shadowpass; // parametrs of most recent shadowmap pass
renderpass_config m_cabshadowpass; // parameters of most recent cab shadowmap pass
std::vector<TSubModel *> m_pickcontrolsitems;
TSubModel *m_pickcontrolitem { nullptr };
std::vector<scene::basic_node *> m_picksceneryitems;
scene::basic_node *m_picksceneryitem { nullptr };
glm::vec3 m_worldmousecoordinates { 0.f };
std::vector<std::function<void( TSubModel const * )>> m_control_pick_requests;
std::vector<std::function<void( scene::basic_node * )>> m_node_pick_requests;
#ifdef EU07_USE_DEBUG_CAMERA
renderpass_config m_worldcamera; // debug item
#endif
};
//---------------------------------------------------------------------------
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