blend_state.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 ** Magnus Norddahl
27 */
28 
29 
30 #pragma once
31 
32 #include <memory>
33 
34 namespace clan
35 {
38 
39 class GraphicContext;
40 class BlendStateDescription;
41 class BlendStateProvider;
42 
45 {
48 public:
51 
58 
61 public:
63  bool is_null() const { return !provider; }
64 
67 
70 private:
71  std::shared_ptr<BlendStateProvider> provider;
73 };
74 
75 }
76 
BlendStateProvider * get_provider() const
bool is_null() const
Returns true if this object is invalid.
Definition: blend_state.h:63
Blend state description.
Definition: blend_state_description.h:43
Definition: graphic_context_provider.h:74
Interface to drawing graphics.
Definition: graphic_context.h:258
BlendState(GraphicContext &context, const BlendStateDescription &desc)
Constructs a Texture.
Definition: clanapp.h:36
Blend state setup.
Definition: blend_state.h:45
BlendState()
Constructs a null instance.