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source: trunk/nv/interface/device.hh @ 501

Last change on this file since 501 was 501, checked in by epyon, 9 years ago
particle engine updates device/context redesign caching of GL state - texture bindings and programs camera view_perspective and view_perspective_inv
File size: 10.9 KB

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1	// Copyright (C) 2012-2015 ChaosForge Ltd
2	// http://chaosforge.org/
3	//
4	// This file is part of Nova libraries.
5	// For conditions of distribution and use, see copying.txt file in root folder.
6
7	/**
8	* @file device.hh
9	* @author Kornel Kisielewicz epyon@chaosforge.org
10	* @brief Device class
11	*/
12
13	#ifndef NV_INTERFACE_DEVICE_HH
14	#define NV_INTERFACE_DEVICE_HH
15
16	#include <nv/common.hh>
17	#include <nv/stl/string.hh>
18	#include <nv/stl/handle.hh>
19	#include <nv/stl/hash_store.hh>
20	#include <nv/interface/uniform.hh>
21	#include <nv/interface/mesh_data.hh>
22	#include <nv/interface/image_data.hh>
23
24	namespace nv
25	{
26	class window;
27
28	enum output_slot
29	{
30	OUTPUT_0 = 0,
31	OUTPUT_1 = 1,
32	OUTPUT_2 = 2,
33	OUTPUT_3 = 3,
34	OUTPUT_4 = 4,
35	OUTPUT_5 = 5,
36	OUTPUT_6 = 6,
37	OUTPUT_7 = 7,
38
39	OUTPUT_NONE = 16,
40	OUTPUT_FRONT = 17,
41	OUTPUT_BACK = 18,
42	};
43
44	enum texture_type
45	{
46	TEXTURE_1D,
47	TEXTURE_2D,
48	TEXTURE_RECT,
49	TEXTURE_3D,
50	TEXTURE_CUBE,
51	TEXTURE_1D_ARRAY,
52	TEXTURE_2D_ARRAY,
53	TEXTURE_1D_BUFFER,
54	TEXTURE_2D_MULTISAMPLE,
55	};
56
57	enum texture_slot
58	{
59	TEX_DIFFUSE = 0,
60	TEX_NORMAL = 1,
61	TEX_METALLIC = 2,
62	TEX_SPECULAR = 2, // obsolete
63	TEX_ROUGHNESS = 3,
64	TEX_GLOSS = 3, // obsolete
65	TEX_EMISSIVE = 4,
66	TEXTURE_0 = 0,
67	TEXTURE_1 = 1,
68	TEXTURE_2 = 2,
69	TEXTURE_3 = 3,
70	TEXTURE_4 = 4,
71	TEXTURE_5 = 5,
72	TEXTURE_6 = 6,
73	TEXTURE_7 = 7,
74	TEXTURE_8 = 8,
75	TEXTURE_9 = 9,
76	TEXTURE_10 = 10,
77	TEXTURE_11 = 11,
78	TEXTURE_12 = 12,
79	TEXTURE_13 = 13,
80	TEXTURE_14 = 14,
81	TEXTURE_15 = 15,
82	MAX_TEXTURES = 16,
83	};
84
85
86	struct attribute
87	{
88	int location;
89	datatype type;
90	int length;
91	};
92
93	typedef hash_store< shash64, attribute > attribute_map;
94
95	struct texture_tag {};
96	struct buffer_tag {};
97	struct program_tag {};
98
99	typedef handle< uint32, 16, 16, buffer_tag > buffer;
100	typedef handle< uint32, 16, 16, texture_tag > texture;
101	typedef handle< uint32, 16, 16, program_tag > program;
102
103	NV_RTTI_DECLARE_NAME( buffer, "buffer" )
104	NV_RTTI_DECLARE_NAME( texture, "texture" )
105	NV_RTTI_DECLARE_NAME( program, "program" )
106
107	struct sampler
108	{
109	enum filter
110	{
111	LINEAR,
112	NEAREST,
113	NEAREST_MIPMAP_NEAREST,
114	LINEAR_MIPMAP_NEAREST,
115	NEAREST_MIPMAP_LINEAR,
116	LINEAR_MIPMAP_LINEAR
117	};
118	enum wrap
119	{
120	CLAMP_TO_EDGE,
121	CLAMP_TO_BORDER,
122	MIRRORED_REPEAT,
123	REPEAT
124	};
125
126	filter filter_min;
127	filter filter_max;
128	wrap wrap_s;
129	wrap wrap_t;
130
131	sampler() : filter_min( LINEAR ), filter_max( LINEAR ), wrap_s( REPEAT ), wrap_t( REPEAT ) {}
132	sampler( filter min, filter max, wrap s, wrap t )
133	: filter_min( min ), filter_max( max ), wrap_s( s ), wrap_t( t ) {}
134	sampler( filter f, wrap w )
135	: filter_min( f ), filter_max( f ), wrap_s( w ), wrap_t( w ) {}
136
137	};
138
139	enum buffer_hint
140	{
141	STATIC_DRAW,
142	STREAM_DRAW,
143	DYNAMIC_DRAW
144	};
145
146	enum buffer_type
147	{
148	VERTEX_BUFFER,
149	INDEX_BUFFER,
150	UNIFORM_BUFFER,
151	TEXTURE_BUFFER,
152	};
153
154	enum buffer_access
155	{
156	WRITE_UNSYNCHRONIZED,
157	};
158
159	struct buffer_info
160	{
161	buffer_type type;
162	buffer_hint hint;
163	size_t size;
164	};
165
166
167	struct texture_info
168	{
169	texture_type type;
170	ivec3 size;
171	image_format format;
172	sampler tsampler;
173	};
174
175	struct vertex_buffer_attribute
176	{
177	buffer vbuffer;
178	datatype dtype;
179	size_t components;
180	size_t offset;
181	size_t stride;
182	slot location;
183	bool owner;
184	};
185
186	struct program_info
187	{
188	attribute_map* m_attribute_map;
189	uniform_map* m_uniform_map;
190	engine_uniform_list* m_engine_uniforms;
191	};
192
193	class device
194	{
195	friend class context;
196	public:
197	device()
198	{
199	initialize_engine_uniforms();
200	}
201	protected:
202	virtual program create_program( string_view vs_source, string_view fs_source ) = 0;
203	virtual buffer create_buffer( buffer_type type, buffer_hint hint ) = 0;
204	virtual texture create_texture( texture_type type, pixel_format format ) = 0;
205
206	// TODO: remove?
207	// virtual texture create_texture( ivec2 size, image_format aformat, sampler asampler, const void* data = nullptr ) { return create_texture( TEXTURE_2D, size, aformat, asampler, data ); }
208
209	virtual void release( texture ) = 0;
210	virtual void release( buffer ) = 0;
211	virtual void release( program ) = 0;
212	public:
213
214
215	virtual image_data* create_image_data( string_view filename ) = 0; // temporary
216	virtual image_data* create_image_data( const uint8* data, uint32 size ) = 0; // temporary
217	virtual const texture_info* get_texture_info( texture ) const = 0;
218	virtual const buffer_info* get_buffer_info( buffer ) const = 0;
219	virtual string_view get_shader_header() const = 0;
220
221	virtual int get_attribute_location( program p, const string_view& name, bool fatal = true ) const = 0;
222	virtual int get_block_location( program p, const string_view& name, bool fatal = true ) const = 0;
223	virtual bool bind_block( program p, const string_view& name, uint32 index ) = 0;
224
225	virtual ~device()
226	{
227	destroy_engine_uniforms();
228	}
229
230	template < typename T >
231	bool set_uniform_array( program p, const string_view& name, const T* value, uint32 count, bool fatal = true )
232	{
233	uniform_base* base = get_uniform( p, name, fatal );
234	if ( base != nullptr )
235	{
236	if ( base->type_check( type_to_enum<T>::type ) )
237	{
238	// TODO: nicer check
239	NV_ASSERT( static_cast<int>( count ) <= base->get_length(), "LENGTH CHECK FAIL" );
240	static_cast<uniform<T>*>( base )->set_value( value, count );
241	return true;
242	}
243	}
244	return false;
245	}
246
247	template < typename T >
248	bool set_opt_uniform_array( program p, const string_view& name, const T* value, uint32 count )
249	{
250	return set_uniform_array( p, name, value, count, false );
251	}
252
253	template < typename T >
254	bool set_opt_uniform_array( program p, const string_view& name, const array_view<T>& value )
255	{
256	return set_uniform_array( p, name, value.data(), value.size(), false );
257	}
258
259
260	template < typename T >
261	bool set_uniform( program p, const string_view& name, const T& value, bool fatal = true )
262	{
263	uniform_base* base = get_uniform( p, name, fatal );
264	if ( base != nullptr )
265	{
266	if ( base->type_check( type_to_enum<T>::type ) )
267	{
268	static_cast<uniform<T>*>( base )->set_value( value );
269	return true;
270	}
271	}
272	return false;
273	}
274
275	template < typename T >
276	bool set_opt_uniform( program p, const string_view& name, const T& value )
277	{
278	return set_uniform( p, name, value, false );
279	}
280
281	// This is done this way to avoid compilation unit creation
282	static engine_uniform_factory_map& get_uniform_factory()
283	{
284	static engine_uniform_factory_map s_engine_uniform_factory_map;
285	return s_engine_uniform_factory_map;
286	}
287
288	// This is done this way to avoid compilation unit creation
289	static engine_link_uniform_factory_map& get_link_uniform_factory()
290	{
291	static engine_link_uniform_factory_map s_engine_link_uniform_factory_map;
292	return s_engine_link_uniform_factory_map;
293	}
294
295	virtual void prepare_program( program p ) = 0;
296
297	protected:
298
299	virtual uniform_base* get_uniform( program p, const string_view& name, bool fatal = true ) const = 0;
300
301	void initialize_engine_uniforms()
302	{
303	engine_uniform_factory_map& factory_map = get_uniform_factory();
304	factory_map[ "nv_f_near"] = new engine_uniform_factory< engine_uniform_f_near >();
305	factory_map[ "nv_f_far"] = new engine_uniform_factory< engine_uniform_f_far >();
306	factory_map[ "nv_m_view" ] = new engine_uniform_factory< engine_uniform_m_view >();
307	factory_map[ "nv_m_view_inv" ] = new engine_uniform_factory< engine_uniform_m_view_inv >();
308	factory_map[ "nv_m_model" ] = new engine_uniform_factory< engine_uniform_m_model >();
309	factory_map[ "nv_m_model_inv" ] = new engine_uniform_factory< engine_uniform_m_model_inv >();
310	factory_map[ "nv_m_modelview" ] = new engine_uniform_factory< engine_uniform_m_modelview >();
311	factory_map[ "nv_m_modelview_inv" ] = new engine_uniform_factory< engine_uniform_m_modelview_inv >();
312	factory_map[ "nv_m_projection" ] = new engine_uniform_factory< engine_uniform_m_projection >();
313	factory_map[ "nv_m_projection_inv"] = new engine_uniform_factory< engine_uniform_m_projection_inv >();
314	factory_map[ "nv_m_viewprojection" ] = new engine_uniform_factory< engine_uniform_m_viewprojection >();
315	factory_map[ "nv_m_viewprojection_inv" ] = new engine_uniform_factory< engine_uniform_m_viewprojection_inv >();
316	factory_map[ "nv_m_normal" ] = new engine_uniform_factory< engine_uniform_m_normal >();
317	factory_map[ "nv_m_mvp" ] = new engine_uniform_factory< engine_uniform_m_mvp >();
318	factory_map[ "nv_m_mvp_inv"] = new engine_uniform_factory< engine_uniform_m_mvp_inv >();
319	factory_map[ "nv_v_camera_position" ] = new engine_uniform_factory< engine_uniform_v_camera_position >();
320	factory_map[ "nv_v_camera_direction" ] = new engine_uniform_factory< engine_uniform_v_camera_direction >();
321	factory_map[ "nv_v_viewport" ] = new engine_uniform_factory< engine_uniform_v_viewport >();
322	factory_map[ "nv_v_screen_size" ] = new engine_uniform_factory< engine_uniform_v_screen_size >();
323
324	engine_link_uniform_factory_map& factory_link_map = get_link_uniform_factory();
325	factory_link_map[ "nv_texture_0" ] = new engine_link_uniform_int<0>();
326	factory_link_map[ "nv_texture_1" ] = new engine_link_uniform_int<1>();
327	factory_link_map[ "nv_texture_2" ] = new engine_link_uniform_int<2>();
328	factory_link_map[ "nv_texture_3" ] = new engine_link_uniform_int<3>();
329	factory_link_map[ "nv_texture_4" ] = new engine_link_uniform_int<4>();
330	factory_link_map[ "nv_texture_5" ] = new engine_link_uniform_int<5>();
331	factory_link_map[ "nv_texture_6" ] = new engine_link_uniform_int<6>();
332	factory_link_map[ "nv_texture_7" ] = new engine_link_uniform_int<7>();
333	factory_link_map[ "nv_texture_8" ] = new engine_link_uniform_int<8>();
334	factory_link_map[ "nv_texture_9" ] = new engine_link_uniform_int<9>();
335	factory_link_map[ "nv_t_diffuse" ] = new engine_link_uniform_int<int( TEX_DIFFUSE )>();
336	factory_link_map[ "nv_t_normal" ] = new engine_link_uniform_int<int( TEX_NORMAL )>();
337	factory_link_map[ "nv_t_metallic" ] = new engine_link_uniform_int<int( TEX_METALLIC )>();
338	factory_link_map[ "nv_t_specular" ] = new engine_link_uniform_int<int( TEX_METALLIC )>();
339	factory_link_map[ "nv_t_roughness"] = new engine_link_uniform_int<int( TEX_ROUGHNESS )>();
340	factory_link_map[ "nv_t_gloss" ] = new engine_link_uniform_int<int( TEX_ROUGHNESS )>();
341	factory_link_map[ "nv_t_emissive" ] = new engine_link_uniform_int<int( TEX_EMISSIVE )>();
342	}
343	void destroy_engine_uniforms()
344	{
345	for ( auto& i : get_uniform_factory() ) delete i.second;
346	for ( auto& i : get_link_uniform_factory() ) delete i.second;
347	get_uniform_factory().clear();
348	get_link_uniform_factory().clear();
349	}
350
351	};
352
353	} // namespace nv
354
355
356	#endif // NV_INTERFACE_DEVICE_HH

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