1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2014 Sam Lantinga <slouken (at) 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: */ 64
