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1 | /* |
2 | Simple DirectMedia Layer | |
3 | Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org> | |
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 | ||
22 | /** | |
23 | * \file SDL_blendmode.h | |
24 | * | |
25 | * Header file declaring the SDL_BlendMode enumeration | |
26 | */ | |
27 | ||
28 | #ifndef _SDL_blendmode_h | |
29 | #define _SDL_blendmode_h | |
30 | ||
31 | #include "begin_code.h" | |
32 | /* Set up for C function definitions, even when using C++ */ | |
33 | #ifdef __cplusplus | |
34 | extern "C" { | |
35 | #endif | |
36 | ||
37 | /** | |
38 | * \brief The blend mode used in SDL_RenderCopy() and drawing operations. | |
39 | */ | |
40 | typedef enum | |
41 | { | |
42 | SDL_BLENDMODE_NONE = 0x00000000, /**< no blending | |
43 | dstRGBA = srcRGBA */ | |
44 | SDL_BLENDMODE_BLEND = 0x00000001, /**< alpha blending | |
45 | dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA)) | |
46 | dstA = srcA + (dstA * (1-srcA)) */ | |
47 | SDL_BLENDMODE_ADD = 0x00000002, /**< additive blending | |
48 | dstRGB = (srcRGB * srcA) + dstRGB | |
49 | dstA = dstA */ | |
50 | SDL_BLENDMODE_MOD = 0x00000004 /**< color modulate | |
51 | dstRGB = srcRGB * dstRGB | |
52 | dstA = dstA */ | |
53 | } SDL_BlendMode; | |
54 | ||
55 | /* Ends C function definitions when using C++ */ | |
56 | #ifdef __cplusplus | |
57 | } | |
58 | #endif | |
59 | #include "close_code.h" | |
60 | ||
61 | #endif /* _SDL_video_h */ | |
62 | ||
63 | /* vi: set ts=4 sw=4 expandtab: */ |