occlusion_query_provider.h
1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2015 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
30 #pragma once
31
32 #include <memory>
33
34 namespace clan
35 {
38
40 class OcclusionQueryProvider
41 {
44
45 public:
46 virtual ~OcclusionQueryProvider() { return; }
47
51
52 public:
54 virtual bool is_result_ready() const = 0;
55
57 virtual int get_result() const = 0;
58
62
63 public:
65 virtual void begin() = 0;
66
68 virtual void end() = 0;
69
71 virtual void create() = 0;
72
76
77 private:
79 };
80
81 }
82
clan
Definition: clanapp.h:35
clan::OcclusionQueryProvider::create
virtual void create()=0
Create occlusion query object.
clan::OcclusionQueryProvider
Occlusion query provider.
Definition: occlusion_query_provider.h:40
clan::OcclusionQueryProvider::is_result_ready
virtual bool is_result_ready() const =0
Returns true if the GPU is ready to return the result.
clan::OcclusionQueryProvider::begin
virtual void begin()=0
Start occlusion query.
clan::OcclusionQueryProvider::get_result
virtual int get_result() const =0
Returns the result of the occlusion query.
clan::OcclusionQueryProvider::end
virtual void end()=0
Finish occlusion query.
clan::OcclusionQueryProvider::~OcclusionQueryProvider
virtual ~OcclusionQueryProvider()
Definition: occlusion_query_provider.h:46