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Diffstat (limited to '3rdparty/include/SDL2/SDL_blendmode.h')
| -rw-r--r-- | 3rdparty/include/SDL2/SDL_blendmode.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/3rdparty/include/SDL2/SDL_blendmode.h b/3rdparty/include/SDL2/SDL_blendmode.h new file mode 100644 index 0000000..5e21a79 --- /dev/null +++ b/3rdparty/include/SDL2/SDL_blendmode.h @@ -0,0 +1,123 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_blendmode.h + * + * Header file declaring the SDL_BlendMode enumeration + */ + +#ifndef SDL_blendmode_h_ +#define SDL_blendmode_h_ + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief The blend mode used in SDL_RenderCopy() and drawing operations. + */ +typedef enum +{ + SDL_BLENDMODE_NONE = 0x00000000, /**< no blending + dstRGBA = srcRGBA */ + SDL_BLENDMODE_BLEND = 0x00000001, /**< alpha blending + dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA)) + dstA = srcA + (dstA * (1-srcA)) */ + SDL_BLENDMODE_ADD = 0x00000002, /**< additive blending + dstRGB = (srcRGB * srcA) + dstRGB + dstA = dstA */ + SDL_BLENDMODE_MOD = 0x00000004, /**< color modulate + dstRGB = srcRGB * dstRGB + dstA = dstA */ + SDL_BLENDMODE_MUL = 0x00000008, /**< color multiply + dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA)) + dstA = (srcA * dstA) + (dstA * (1-srcA)) */ + SDL_BLENDMODE_INVALID = 0x7FFFFFFF + + /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */ + +} SDL_BlendMode; + +/** + * \brief The blend operation used when combining source and destination pixel components + */ +typedef enum +{ + SDL_BLENDOPERATION_ADD = 0x1, /**< dst + src: supported by all renderers */ + SDL_BLENDOPERATION_SUBTRACT = 0x2, /**< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES */ + SDL_BLENDOPERATION_REV_SUBTRACT = 0x3, /**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES */ + SDL_BLENDOPERATION_MINIMUM = 0x4, /**< min(dst, src) : supported by D3D11 */ + SDL_BLENDOPERATION_MAXIMUM = 0x5 /**< max(dst, src) : supported by D3D11 */ + +} SDL_BlendOperation; + +/** + * \brief The normalized factor used to multiply pixel components + */ +typedef enum +{ + SDL_BLENDFACTOR_ZERO = 0x1, /**< 0, 0, 0, 0 */ + SDL_BLENDFACTOR_ONE = 0x2, /**< 1, 1, 1, 1 */ + SDL_BLENDFACTOR_SRC_COLOR = 0x3, /**< srcR, srcG, srcB, srcA */ + SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4, /**< 1-srcR, 1-srcG, 1-srcB, 1-srcA */ + SDL_BLENDFACTOR_SRC_ALPHA = 0x5, /**< srcA, srcA, srcA, srcA */ + SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6, /**< 1-srcA, 1-srcA, 1-srcA, 1-srcA */ + SDL_BLENDFACTOR_DST_COLOR = 0x7, /**< dstR, dstG, dstB, dstA */ + SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8, /**< 1-dstR, 1-dstG, 1-dstB, 1-dstA */ + SDL_BLENDFACTOR_DST_ALPHA = 0x9, /**< dstA, dstA, dstA, dstA */ + SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA /**< 1-dstA, 1-dstA, 1-dstA, 1-dstA */ + +} SDL_BlendFactor; + +/** + * \brief Create a custom blend mode, which may or may not be supported by a given renderer + * + * \param srcColorFactor source color factor + * \param dstColorFactor destination color factor + * \param colorOperation color operation + * \param srcAlphaFactor source alpha factor + * \param dstAlphaFactor destination alpha factor + * \param alphaOperation alpha operation + * + * The result of the blend mode operation will be: + * dstRGB = dstRGB * dstColorFactor colorOperation srcRGB * srcColorFactor + * and + * dstA = dstA * dstAlphaFactor alphaOperation srcA * srcAlphaFactor + */ +extern DECLSPEC SDL_BlendMode SDLCALL SDL_ComposeCustomBlendMode(SDL_BlendFactor srcColorFactor, + SDL_BlendFactor dstColorFactor, + SDL_BlendOperation colorOperation, + SDL_BlendFactor srcAlphaFactor, + SDL_BlendFactor dstAlphaFactor, + SDL_BlendOperation alphaOperation); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_blendmode_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |