occlusion_query_provider.h
1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2016 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Harry Storbacka
27 */
28 
29 #pragma once
30 
31 #include <memory>
32 
33 namespace clan
34 {
37 
40  {
41  public:
42  virtual ~OcclusionQueryProvider() { return; }
43 
45  virtual bool is_result_ready() const = 0;
46 
48  virtual int get_result() const = 0;
49 
51  virtual void begin() = 0;
52 
54  virtual void end() = 0;
55 
57  virtual void create() = 0;
58  };
59 
61 }
Definition: clanapp.h:35
virtual int get_result() const =0
Returns the result of the occlusion query.
Occlusion query provider.
Definition: occlusion_query_provider.h:39
virtual void begin()=0
Start occlusion query.
virtual ~OcclusionQueryProvider()
Definition: occlusion_query_provider.h:42
virtual void end()=0
Finish occlusion query.
virtual bool is_result_ready() const =0
Returns true if the GPU is ready to return the result.
virtual void create()=0
Create occlusion query object.