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BlendMode.hpp
1 //
3 // SFML - Simple and Fast Multimedia Library
4 // Copyright (C) 2007-2018 Laurent Gomila (laurent@sfml-dev.org)
5 //
6 // This software is provided 'as-is', without any express or implied warranty.
7 // In no event will the authors be held liable for any damages 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 freely,
11 // subject to the following restrictions:
12 //
13 // 1. The origin of this software must not be misrepresented;
14 // you must not claim that you wrote the original software.
15 // If you use this software in a product, an acknowledgment
16 // in the product documentation would be appreciated but is not required.
17 //
18 // 2. Altered source versions must be plainly marked as such,
19 // and must not be misrepresented as being the original software.
20 //
21 // 3. This notice may not be removed or altered from any source distribution.
22 //
24
25 #ifndef SFML_BLENDMODE_HPP
26 #define SFML_BLENDMODE_HPP
27
29 // Headers
31 #include <SFML/Graphics/Export.hpp>
32
33
34 namespace sf
35 {
36
41 struct SFML_GRAPHICS_API BlendMode
42 {
49 enum Factor
50 {
51 Zero,
52 One,
53 SrcColor,
54 OneMinusSrcColor,
55 DstColor,
56 OneMinusDstColor,
57 SrcAlpha,
58 OneMinusSrcAlpha,
59 DstAlpha,
60 OneMinusDstAlpha
61 };
62
69 enum Equation
70 {
71 Add,
72 Subtract,
73 ReverseSubtract
74 };
75
82 BlendMode();
83
95 BlendMode(Factor sourceFactor, Factor destinationFactor, Equation blendEquation = Add);
96
108 BlendMode(Factor colorSourceFactor, Factor colorDestinationFactor,
109 Equation colorBlendEquation, Factor alphaSourceFactor,
110 Factor alphaDestinationFactor, Equation alphaBlendEquation);
111
113 // Member Data
115 Factor colorSrcFactor;
116 Factor colorDstFactor;
117 Equation colorEquation;
118 Factor alphaSrcFactor;
119 Factor alphaDstFactor;
120 Equation alphaEquation;
121 };
122
133 SFML_GRAPHICS_API bool operator ==(const BlendMode& left, const BlendMode& right);
134
145 SFML_GRAPHICS_API bool operator !=(const BlendMode& left, const BlendMode& right);
146
148 // Commonly used blending modes
150 SFML_GRAPHICS_API extern const BlendMode BlendAlpha;
151 SFML_GRAPHICS_API extern const BlendMode BlendAdd;
152 SFML_GRAPHICS_API extern const BlendMode BlendMultiply;
153 SFML_GRAPHICS_API extern const BlendMode BlendNone;
154
155 } // namespace sf
156
157
158 #endif // SFML_BLENDMODE_HPP
159
160
sf::BlendMode::colorEquation
Equation colorEquation
Blending equation for the color channels.
Definition: BlendMode.hpp:117
sf::BlendMode::SrcAlpha
(src.a, src.a, src.a, src.a)
Definition: BlendMode.hpp:57
sf::BlendMode::alphaSrcFactor
Factor alphaSrcFactor
Source blending factor for the alpha channel.
Definition: BlendMode.hpp:118
sf::BlendMode::Zero
(0, 0, 0, 0)
Definition: BlendMode.hpp:51
sf::BlendMode::OneMinusDstColor
(1, 1, 1, 1) - (dst.r, dst.g, dst.b, dst.a)
Definition: BlendMode.hpp:56
sf::BlendMode
Blending modes for drawing.
Definition: BlendMode.hpp:41
sf::BlendMode::One
(1, 1, 1, 1)
Definition: BlendMode.hpp:52
sf::BlendMode::colorSrcFactor
Factor colorSrcFactor
Source blending factor for the color channels.
Definition: BlendMode.hpp:115
sf::BlendMode::alphaEquation
Equation alphaEquation
Blending equation for the alpha channel.
Definition: BlendMode.hpp:120
sf::BlendMode::Subtract
Pixel = Src * SrcFactor - Dst * DstFactor.
Definition: BlendMode.hpp:72
sf::BlendMode::colorDstFactor
Factor colorDstFactor
Destination blending factor for the color channels.
Definition: BlendMode.hpp:116
sf::BlendMode::Add
Pixel = Src * SrcFactor + Dst * DstFactor.
Definition: BlendMode.hpp:71
sf::BlendMode::DstAlpha
(dst.a, dst.a, dst.a, dst.a)
Definition: BlendMode.hpp:59
sf::BlendMode::OneMinusSrcAlpha
(1, 1, 1, 1) - (src.a, src.a, src.a, src.a)
Definition: BlendMode.hpp:58
sf::BlendMode::OneMinusSrcColor
(1, 1, 1, 1) - (src.r, src.g, src.b, src.a)
Definition: BlendMode.hpp:54
sf::BlendMode::Equation
Equation
Enumeration of the blending equations.
Definition: BlendMode.hpp:69
sf
Definition: AlResource.hpp:34
sf::BlendMode::Factor
Factor
Enumeration of the blending factors.
Definition: BlendMode.hpp:49
sf::BlendMode::alphaDstFactor
Factor alphaDstFactor
Destination blending factor for the alpha channel.
Definition: BlendMode.hpp:119
sf::BlendMode::DstColor
(dst.r, dst.g, dst.b, dst.a)
Definition: BlendMode.hpp:55
sf::BlendMode::SrcColor
(src.r, src.g, src.b, src.a)
Definition: BlendMode.hpp:53