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Diffstat (limited to 'dependencies/SDL/SDL_blendmode.h')
| -rw-r--r-- | dependencies/SDL/SDL_blendmode.h | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/dependencies/SDL/SDL_blendmode.h b/dependencies/SDL/SDL_blendmode.h deleted file mode 100644 index 08c9f9d..0000000 --- a/dependencies/SDL/SDL_blendmode.h +++ /dev/null @@ -1,198 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2022 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 D3D9, D3D11 */ - SDL_BLENDOPERATION_MAXIMUM = 0x5 /**< max(dst, src) : supported by D3D9, 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; - -/** - * Compose a custom blend mode for renderers. - * - * The functions SDL_SetRenderDrawBlendMode and SDL_SetTextureBlendMode accept - * the SDL_BlendMode returned by this function if the renderer supports it. - * - * A blend mode controls how the pixels from a drawing operation (source) get - * combined with the pixels from the render target (destination). First, the - * components of the source and destination pixels get multiplied with their - * blend factors. Then, the blend operation takes the two products and - * calculates the result that will get stored in the render target. - * - * Expressed in pseudocode, it would look like this: - * - * ```c - * dstRGB = colorOperation(srcRGB * srcColorFactor, dstRGB * dstColorFactor); - * dstA = alphaOperation(srcA * srcAlphaFactor, dstA * dstAlphaFactor); - * ``` - * - * Where the functions `colorOperation(src, dst)` and `alphaOperation(src, - * dst)` can return one of the following: - * - * - `src + dst` - * - `src - dst` - * - `dst - src` - * - `min(src, dst)` - * - `max(src, dst)` - * - * The red, green, and blue components are always multiplied with the first, - * second, and third components of the SDL_BlendFactor, respectively. The - * fourth component is not used. - * - * The alpha component is always multiplied with the fourth component of the - * SDL_BlendFactor. The other components are not used in the alpha - * calculation. - * - * Support for these blend modes varies for each renderer. To check if a - * specific SDL_BlendMode is supported, create a renderer and pass it to - * either SDL_SetRenderDrawBlendMode or SDL_SetTextureBlendMode. They will - * return with an error if the blend mode is not supported. - * - * This list describes the support of custom blend modes for each renderer in - * SDL 2.0.6. All renderers support the four blend modes listed in the - * SDL_BlendMode enumeration. - * - * - **direct3d**: Supports all operations with all factors. However, some - * factors produce unexpected results with `SDL_BLENDOPERATION_MINIMUM` and - * `SDL_BLENDOPERATION_MAXIMUM`. - * - **direct3d11**: Same as Direct3D 9. - * - **opengl**: Supports the `SDL_BLENDOPERATION_ADD` operation with all - * factors. OpenGL versions 1.1, 1.2, and 1.3 do not work correctly with SDL - * 2.0.6. - * - **opengles**: Supports the `SDL_BLENDOPERATION_ADD` operation with all - * factors. Color and alpha factors need to be the same. OpenGL ES 1 - * implementation specific: May also support `SDL_BLENDOPERATION_SUBTRACT` - * and `SDL_BLENDOPERATION_REV_SUBTRACT`. May support color and alpha - * operations being different from each other. May support color and alpha - * factors being different from each other. - * - **opengles2**: Supports the `SDL_BLENDOPERATION_ADD`, - * `SDL_BLENDOPERATION_SUBTRACT`, `SDL_BLENDOPERATION_REV_SUBTRACT` - * operations with all factors. - * - **psp**: No custom blend mode support. - * - **software**: No custom blend mode support. - * - * Some renderers do not provide an alpha component for the default render - * target. The `SDL_BLENDFACTOR_DST_ALPHA` and - * `SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA` factors do not have an effect in this - * case. - * - * \param srcColorFactor the SDL_BlendFactor applied to the red, green, and - * blue components of the source pixels - * \param dstColorFactor the SDL_BlendFactor applied to the red, green, and - * blue components of the destination pixels - * \param colorOperation the SDL_BlendOperation used to combine the red, - * green, and blue components of the source and - * destination pixels - * \param srcAlphaFactor the SDL_BlendFactor applied to the alpha component of - * the source pixels - * \param dstAlphaFactor the SDL_BlendFactor applied to the alpha component of - * the destination pixels - * \param alphaOperation the SDL_BlendOperation used to combine the alpha - * component of the source and destination pixels - * \returns an SDL_BlendMode that represents the chosen factors and - * operations. - * - * \since This function is available since SDL 2.0.6. - * - * \sa SDL_SetRenderDrawBlendMode - * \sa SDL_GetRenderDrawBlendMode - * \sa SDL_SetTextureBlendMode - * \sa SDL_GetTextureBlendMode - */ -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: */ |