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64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* \file SDL_blendmode.h
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*
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* Header file declaring the SDL_BlendMode enumeration
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*/
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#ifndef SDL_blendmode_h_
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#define SDL_blendmode_h_
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief The blend mode used in SDL_RenderCopy() and drawing operations.
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*/
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typedef enum
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{
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SDL_BLENDMODE_NONE = 0x00000000, /**< no blending
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dstRGBA = srcRGBA */
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SDL_BLENDMODE_BLEND = 0x00000001, /**< alpha blending
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dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))
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dstA = srcA + (dstA * (1-srcA)) */
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SDL_BLENDMODE_ADD = 0x00000002, /**< additive blending
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dstRGB = (srcRGB * srcA) + dstRGB
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dstA = dstA */
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SDL_BLENDMODE_MOD = 0x00000004 /**< color modulate
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dstRGB = srcRGB * dstRGB
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dstA = dstA */
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} SDL_BlendMode;
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* SDL_blendmode_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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