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source: trunk/nv/interface/device.hh @ 506

Last change on this file since 506 was 506, checked in by epyon, 9 years ago
split shader objects from programs to allow separate compilation minor additions
File size: 11.5 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 shader_type
29	{
30	VERTEX_SHADER,
31	FRAGMENT_SHADER
32	};
33
34	enum output_slot
35	{
36	OUTPUT_0 = 0,
37	OUTPUT_1 = 1,
38	OUTPUT_2 = 2,
39	OUTPUT_3 = 3,
40	OUTPUT_4 = 4,
41	OUTPUT_5 = 5,
42	OUTPUT_6 = 6,
43	OUTPUT_7 = 7,
44
45	OUTPUT_NONE = 16,
46	OUTPUT_FRONT = 17,
47	OUTPUT_BACK = 18,
48	};
49
50	enum texture_type
51	{
52	TEXTURE_1D,
53	TEXTURE_2D,
54	TEXTURE_RECT,
55	TEXTURE_3D,
56	TEXTURE_CUBE,
57	TEXTURE_1D_ARRAY,
58	TEXTURE_2D_ARRAY,
59	TEXTURE_1D_BUFFER,
60	TEXTURE_2D_MULTISAMPLE,
61	};
62
63	enum texture_slot
64	{
65	TEX_DIFFUSE = 0,
66	TEX_NORMAL = 1,
67	TEX_METALLIC = 2,
68	TEX_SPECULAR = 2, // obsolete
69	TEX_ROUGHNESS = 3,
70	TEX_GLOSS = 3, // obsolete
71	TEX_EMISSIVE = 4,
72	TEXTURE_0 = 0,
73	TEXTURE_1 = 1,
74	TEXTURE_2 = 2,
75	TEXTURE_3 = 3,
76	TEXTURE_4 = 4,
77	TEXTURE_5 = 5,
78	TEXTURE_6 = 6,
79	TEXTURE_7 = 7,
80	TEXTURE_8 = 8,
81	TEXTURE_9 = 9,
82	TEXTURE_10 = 10,
83	TEXTURE_11 = 11,
84	TEXTURE_12 = 12,
85	TEXTURE_13 = 13,
86	TEXTURE_14 = 14,
87	TEXTURE_15 = 15,
88	MAX_TEXTURES = 16,
89	};
90
91
92	struct attribute
93	{
94	int location;
95	datatype type;
96	int length;
97	};
98
99	typedef hash_store< shash64, attribute > attribute_map;
100
101	struct texture_tag {};
102	struct buffer_tag {};
103	struct shader_tag {};
104	struct program_tag {};
105
106	typedef handle< uint32, 16, 16, buffer_tag > buffer;
107	typedef handle< uint32, 16, 16, texture_tag > texture;
108	typedef handle< uint32, 16, 16, shader_tag > shader;
109	typedef handle< uint32, 16, 16, program_tag > program;
110
111	NV_RTTI_DECLARE_NAME( buffer, "buffer" )
112	NV_RTTI_DECLARE_NAME( texture, "texture" )
113	NV_RTTI_DECLARE_NAME( shader, "shader" )
114	NV_RTTI_DECLARE_NAME( program, "program" )
115
116	struct sampler
117	{
118	enum filter
119	{
120	LINEAR,
121	NEAREST,
122	NEAREST_MIPMAP_NEAREST,
123	LINEAR_MIPMAP_NEAREST,
124	NEAREST_MIPMAP_LINEAR,
125	LINEAR_MIPMAP_LINEAR
126	};
127	enum wrap
128	{
129	CLAMP_TO_EDGE,
130	CLAMP_TO_BORDER,
131	MIRRORED_REPEAT,
132	REPEAT
133	};
134
135	filter filter_min;
136	filter filter_max;
137	wrap wrap_s;
138	wrap wrap_t;
139
140	sampler() : filter_min( LINEAR ), filter_max( LINEAR ), wrap_s( REPEAT ), wrap_t( REPEAT ) {}
141	sampler( filter min, filter max, wrap s, wrap t )
142	: filter_min( min ), filter_max( max ), wrap_s( s ), wrap_t( t ) {}
143	sampler( filter f, wrap w )
144	: filter_min( f ), filter_max( f ), wrap_s( w ), wrap_t( w ) {}
145
146	};
147
148	enum buffer_hint
149	{
150	STATIC_DRAW,
151	STREAM_DRAW,
152	DYNAMIC_DRAW
153	};
154
155	enum buffer_type
156	{
157	VERTEX_BUFFER,
158	INDEX_BUFFER,
159	UNIFORM_BUFFER,
160	TEXTURE_BUFFER,
161	};
162
163	enum buffer_access
164	{
165	WRITE_UNSYNCHRONIZED,
166	};
167
168	struct buffer_info
169	{
170	buffer_type type;
171	buffer_hint hint;
172	size_t size;
173	};
174
175
176	struct texture_info
177	{
178	texture_type type;
179	ivec3 size;
180	image_format format;
181	sampler tsampler;
182	};
183
184	struct vertex_buffer_attribute
185	{
186	buffer vbuffer;
187	datatype dtype;
188	size_t components;
189	size_t offset;
190	size_t stride;
191	slot location;
192	bool owner;
193	};
194
195	struct shader_info
196	{
197	shader_type type;
198	};
199
200	struct program_info
201	{
202	attribute_map* m_attribute_map;
203	uniform_map* m_uniform_map;
204	engine_uniform_list* m_engine_uniforms;
205	};
206
207	class device
208	{
209	friend class context;
210	public:
211	device()
212	{
213	initialize_engine_uniforms();
214	}
215	protected:
216	virtual shader create_shader( shader_type type, string_view sh_source ) = 0;
217	// virtual program create_program( string_view vs_source, string_view fs_source ) = 0;
218	virtual program create_program( shader vs, shader fs ) = 0;
219	virtual buffer create_buffer( buffer_type type, buffer_hint hint ) = 0;
220	virtual texture create_texture( texture_type type, pixel_format format ) = 0;
221
222	// TODO: remove?
223	// virtual texture create_texture( ivec2 size, image_format aformat, sampler asampler, const void* data = nullptr ) { return create_texture( TEXTURE_2D, size, aformat, asampler, data ); }
224	virtual void attach( program p, shader s ) = 0;
225	virtual void detach( program p, shader s ) = 0;
226
227	virtual void release( texture ) = 0;
228	virtual void release( buffer ) = 0;
229	virtual void release( program ) = 0;
230	virtual void release( shader ) = 0;
231	public:
232
233
234	virtual image_data* create_image_data( string_view filename ) = 0; // temporary
235	virtual image_data* create_image_data( const uint8* data, uint32 size ) = 0; // temporary
236	virtual const texture_info* get_texture_info( texture ) const = 0;
237	virtual const buffer_info* get_buffer_info( buffer ) const = 0;
238	virtual string_view get_shader_header() const = 0;
239
240	virtual int get_attribute_location( program p, const string_view& name, bool fatal = true ) const = 0;
241	virtual int get_block_location( program p, const string_view& name, bool fatal = true ) const = 0;
242	virtual bool bind_block( program p, const string_view& name, uint32 index ) = 0;
243
244	virtual ~device()
245	{
246	destroy_engine_uniforms();
247	}
248
249	template < typename T >
250	bool set_uniform_array( program p, const string_view& name, const T* value, uint32 count, bool fatal = true )
251	{
252	uniform_base* base = get_uniform( p, name, fatal );
253	if ( base != nullptr )
254	{
255	if ( base->type_check( type_to_enum<T>::type ) )
256	{
257	// TODO: nicer check
258	NV_ASSERT( static_cast<int>( count ) <= base->get_length(), "LENGTH CHECK FAIL" );
259	static_cast<uniform<T>*>( base )->set_value( value, count );
260	return true;
261	}
262	}
263	return false;
264	}
265
266	template < typename T >
267	bool set_opt_uniform_array( program p, const string_view& name, const T* value, uint32 count )
268	{
269	return set_uniform_array( p, name, value, count, false );
270	}
271
272	template < typename T >
273	bool set_opt_uniform_array( program p, const string_view& name, const array_view<T>& value )
274	{
275	return set_uniform_array( p, name, value.data(), value.size(), false );
276	}
277
278
279	template < typename T >
280	bool set_uniform( program p, const string_view& name, const T& value, bool fatal = true )
281	{
282	uniform_base* base = get_uniform( p, name, fatal );
283	if ( base != nullptr )
284	{
285	if ( base->type_check( type_to_enum<T>::type ) )
286	{
287	static_cast<uniform<T>*>( base )->set_value( value );
288	return true;
289	}
290	}
291	return false;
292	}
293
294	template < typename T >
295	bool set_opt_uniform( program p, const string_view& name, const T& value )
296	{
297	return set_uniform( p, name, value, false );
298	}
299
300	// This is done this way to avoid compilation unit creation
301	static engine_uniform_factory_map& get_uniform_factory()
302	{
303	static engine_uniform_factory_map s_engine_uniform_factory_map;
304	return s_engine_uniform_factory_map;
305	}
306
307	// This is done this way to avoid compilation unit creation
308	static engine_link_uniform_factory_map& get_link_uniform_factory()
309	{
310	static engine_link_uniform_factory_map s_engine_link_uniform_factory_map;
311	return s_engine_link_uniform_factory_map;
312	}
313
314	virtual void prepare_program( program p ) = 0;
315
316	protected:
317
318	virtual uniform_base* get_uniform( program p, const string_view& name, bool fatal = true ) const = 0;
319
320	void initialize_engine_uniforms()
321	{
322	engine_uniform_factory_map& factory_map = get_uniform_factory();
323	factory_map[ "nv_f_near"] = new engine_uniform_factory< engine_uniform_f_near >();
324	factory_map[ "nv_f_far"] = new engine_uniform_factory< engine_uniform_f_far >();
325	factory_map[ "nv_m_view" ] = new engine_uniform_factory< engine_uniform_m_view >();
326	factory_map[ "nv_m_view_inv" ] = new engine_uniform_factory< engine_uniform_m_view_inv >();
327	factory_map[ "nv_m_model" ] = new engine_uniform_factory< engine_uniform_m_model >();
328	factory_map[ "nv_m_model_inv" ] = new engine_uniform_factory< engine_uniform_m_model_inv >();
329	factory_map[ "nv_m_modelview" ] = new engine_uniform_factory< engine_uniform_m_modelview >();
330	factory_map[ "nv_m_modelview_inv" ] = new engine_uniform_factory< engine_uniform_m_modelview_inv >();
331	factory_map[ "nv_m_projection" ] = new engine_uniform_factory< engine_uniform_m_projection >();
332	factory_map[ "nv_m_projection_inv"] = new engine_uniform_factory< engine_uniform_m_projection_inv >();
333	factory_map[ "nv_m_viewprojection" ] = new engine_uniform_factory< engine_uniform_m_viewprojection >();
334	factory_map[ "nv_m_viewprojection_inv" ] = new engine_uniform_factory< engine_uniform_m_viewprojection_inv >();
335	factory_map[ "nv_m_normal" ] = new engine_uniform_factory< engine_uniform_m_normal >();
336	factory_map[ "nv_m_mvp" ] = new engine_uniform_factory< engine_uniform_m_mvp >();
337	factory_map[ "nv_m_mvp_inv"] = new engine_uniform_factory< engine_uniform_m_mvp_inv >();
338	factory_map[ "nv_v_camera_position" ] = new engine_uniform_factory< engine_uniform_v_camera_position >();
339	factory_map[ "nv_v_camera_direction" ] = new engine_uniform_factory< engine_uniform_v_camera_direction >();
340	factory_map[ "nv_v_viewport" ] = new engine_uniform_factory< engine_uniform_v_viewport >();
341	factory_map[ "nv_v_screen_size" ] = new engine_uniform_factory< engine_uniform_v_screen_size >();
342
343	engine_link_uniform_factory_map& factory_link_map = get_link_uniform_factory();
344	factory_link_map[ "nv_texture_0" ] = new engine_link_uniform_int<0>();
345	factory_link_map[ "nv_texture_1" ] = new engine_link_uniform_int<1>();
346	factory_link_map[ "nv_texture_2" ] = new engine_link_uniform_int<2>();
347	factory_link_map[ "nv_texture_3" ] = new engine_link_uniform_int<3>();
348	factory_link_map[ "nv_texture_4" ] = new engine_link_uniform_int<4>();
349	factory_link_map[ "nv_texture_5" ] = new engine_link_uniform_int<5>();
350	factory_link_map[ "nv_texture_6" ] = new engine_link_uniform_int<6>();
351	factory_link_map[ "nv_texture_7" ] = new engine_link_uniform_int<7>();
352	factory_link_map[ "nv_texture_8" ] = new engine_link_uniform_int<8>();
353	factory_link_map[ "nv_texture_9" ] = new engine_link_uniform_int<9>();
354	factory_link_map[ "nv_t_diffuse" ] = new engine_link_uniform_int<int( TEX_DIFFUSE )>();
355	factory_link_map[ "nv_t_normal" ] = new engine_link_uniform_int<int( TEX_NORMAL )>();
356	factory_link_map[ "nv_t_metallic" ] = new engine_link_uniform_int<int( TEX_METALLIC )>();
357	factory_link_map[ "nv_t_specular" ] = new engine_link_uniform_int<int( TEX_METALLIC )>();
358	factory_link_map[ "nv_t_roughness"] = new engine_link_uniform_int<int( TEX_ROUGHNESS )>();
359	factory_link_map[ "nv_t_gloss" ] = new engine_link_uniform_int<int( TEX_ROUGHNESS )>();
360	factory_link_map[ "nv_t_emissive" ] = new engine_link_uniform_int<int( TEX_EMISSIVE )>();
361	}
362	void destroy_engine_uniforms()
363	{
364	for ( auto& i : get_uniform_factory() ) delete i.second;
365	for ( auto& i : get_link_uniform_factory() ) delete i.second;
366	get_uniform_factory().clear();
367	get_link_uniform_factory().clear();
368	}
369
370	};
371
372	} // namespace nv
373
374
375	#endif // NV_INTERFACE_DEVICE_HH

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