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22a0949a26
Upgrade to build and run from VS2019 Upgrades to Xcode project and Apple Silicon support Update SDL2 to 2.0.14 Updated SDL2 include files to fix Mac build in GitHub Actions Added another mention of arm64 to command line help Restored original opus sse files, excluded from Xcode Added arm64 to the post-build symlinking step Merge branch 'main' into xcode Merge branch 'main' into vs2019 Added shell script to compile Universal 2 binary (x86_64+arm64) Reverting alert style to deprecated methods Upgrades to Xcode project and Apple Silicon support Update SDL2 to 2.0.14 Added another mention of arm64 to command line help Restored original opus sse files, excluded from Xcode Added arm64 to the post-build symlinking step Added shell script to compile Universal 2 binary (x86_64+arm64) Reverting alert style to deprecated methods Merge branch 'xcode' of https://github.com/tomkidd/ioq3 into xcode Removed signature from SDL dylib, enabled dark mode on macOS. spaces > tabs Ad-hoc signed libSDL2-2.0.0.dylib Fix compiling against SDL 2.0.17 UB2 now signs and notarizes, upgraded to SDL 2.0.16 Architectures in libSDL2 restored for ppc and i386 Merge remote-tracking branch 'upstream/main' into vs2019 Update SDL2 to 2.0.16 Added rudimentary support for automatically finding Microsoft Store version of Quake 3 GHA deprecated Ubuntu 16.04 - update to 18.04 qsort cannot be called with NULL Merge remote-tracking branch 'upstream/main' into vs2019 Addressed string concatenation issue and added dummy method for Mac/Linux Added missing variable. Merge remote-tracking branch 'upstream/main' into xcode Updated SDL 2.0.16 headers and Mac version of libraries to fix GitHub actions Addressed PR suggestions Modified MS Store path handling to better follow the pattern of Steam/GOG Merge pull request #481 from tomkidd/xcode Merge pull request #482 from tomkidd/vs2019 OpenGL2: Fix r_grayscale 1 making everything solid black Print full GL_EXTENSIONS list for OpenGL contexts before 3.0 Fix being unable to enter Team Arena CD key OpenGL2: GL_DEPTH_TEXTURE_MODE was removed from OpenGL 3.0/Core Improve setting Microsoft Store path Update building for macOS in README Make macOS arm64 default to target macOS 11 in Makefile Fix error when cross-compiling for macOS arm64 using Makefile Fix passing arguments to VM dylib on Apple M1 Fix compiling on older macOS Fix memory corruption in S_TransferPaintBuffer Fix memset Fix hex digit Fix uninitialized variable some old URL and doc updates Update README.md Update FUNDING.yml code/curl: update ifdef condition for MCST-LCC compiler in mcst-lcc compiler => 1.25 added a new macro definition to determine compiler Revert "code/curl: update ifdef condition for MCST-LCC compiler" Revert "E2K: fixed build by MCST lcc compiler when using USE_CURL=1 option" More predictable mesh normals generation vm_x86.c: Add `defined(_M_IX86) || defined(_M_X64)` (fix for VS2019) Add keys for SDL 2.0.14's new gamepad buttons Fix in_availableJoysticks cvar not updating Fix (disabled) Wavelet sound decompression Update to SDL 2.24.0 and add separate macOS UB2 dylib Update macOS UB1 to SDL 2.0.22 Fix running make-macosx{,-ub2}.sh on Linux Update MSVC .lib files to SDL 2.24.0
198 lines
8.8 KiB
C
198 lines
8.8 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 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_MUL = 0x00000008, /**< color multiply
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dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
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dstA = (srcA * dstA) + (dstA * (1-srcA)) */
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SDL_BLENDMODE_INVALID = 0x7FFFFFFF
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/* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */
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} SDL_BlendMode;
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/**
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* \brief The blend operation used when combining source and destination pixel components
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*/
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typedef enum
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{
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SDL_BLENDOPERATION_ADD = 0x1, /**< dst + src: supported by all renderers */
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SDL_BLENDOPERATION_SUBTRACT = 0x2, /**< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES */
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SDL_BLENDOPERATION_REV_SUBTRACT = 0x3, /**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES */
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SDL_BLENDOPERATION_MINIMUM = 0x4, /**< min(dst, src) : supported by D3D9, D3D11 */
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SDL_BLENDOPERATION_MAXIMUM = 0x5 /**< max(dst, src) : supported by D3D9, D3D11 */
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} SDL_BlendOperation;
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/**
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* \brief The normalized factor used to multiply pixel components
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*/
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typedef enum
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{
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SDL_BLENDFACTOR_ZERO = 0x1, /**< 0, 0, 0, 0 */
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SDL_BLENDFACTOR_ONE = 0x2, /**< 1, 1, 1, 1 */
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SDL_BLENDFACTOR_SRC_COLOR = 0x3, /**< srcR, srcG, srcB, srcA */
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SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4, /**< 1-srcR, 1-srcG, 1-srcB, 1-srcA */
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SDL_BLENDFACTOR_SRC_ALPHA = 0x5, /**< srcA, srcA, srcA, srcA */
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SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6, /**< 1-srcA, 1-srcA, 1-srcA, 1-srcA */
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SDL_BLENDFACTOR_DST_COLOR = 0x7, /**< dstR, dstG, dstB, dstA */
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SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8, /**< 1-dstR, 1-dstG, 1-dstB, 1-dstA */
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SDL_BLENDFACTOR_DST_ALPHA = 0x9, /**< dstA, dstA, dstA, dstA */
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SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA /**< 1-dstA, 1-dstA, 1-dstA, 1-dstA */
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} SDL_BlendFactor;
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/**
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* Compose a custom blend mode for renderers.
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*
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* The functions SDL_SetRenderDrawBlendMode and SDL_SetTextureBlendMode accept
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* the SDL_BlendMode returned by this function if the renderer supports it.
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*
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* A blend mode controls how the pixels from a drawing operation (source) get
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* combined with the pixels from the render target (destination). First, the
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* components of the source and destination pixels get multiplied with their
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* blend factors. Then, the blend operation takes the two products and
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* calculates the result that will get stored in the render target.
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*
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* Expressed in pseudocode, it would look like this:
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*
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* ```c
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* dstRGB = colorOperation(srcRGB * srcColorFactor, dstRGB * dstColorFactor);
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* dstA = alphaOperation(srcA * srcAlphaFactor, dstA * dstAlphaFactor);
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* ```
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*
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* Where the functions `colorOperation(src, dst)` and `alphaOperation(src,
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* dst)` can return one of the following:
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*
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* - `src + dst`
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* - `src - dst`
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* - `dst - src`
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* - `min(src, dst)`
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* - `max(src, dst)`
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*
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* The red, green, and blue components are always multiplied with the first,
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* second, and third components of the SDL_BlendFactor, respectively. The
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* fourth component is not used.
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*
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* The alpha component is always multiplied with the fourth component of the
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* SDL_BlendFactor. The other components are not used in the alpha
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* calculation.
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*
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* Support for these blend modes varies for each renderer. To check if a
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* specific SDL_BlendMode is supported, create a renderer and pass it to
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* either SDL_SetRenderDrawBlendMode or SDL_SetTextureBlendMode. They will
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* return with an error if the blend mode is not supported.
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*
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* This list describes the support of custom blend modes for each renderer in
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* SDL 2.0.6. All renderers support the four blend modes listed in the
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* SDL_BlendMode enumeration.
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*
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* - **direct3d**: Supports all operations with all factors. However, some
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* factors produce unexpected results with `SDL_BLENDOPERATION_MINIMUM` and
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* `SDL_BLENDOPERATION_MAXIMUM`.
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* - **direct3d11**: Same as Direct3D 9.
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* - **opengl**: Supports the `SDL_BLENDOPERATION_ADD` operation with all
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* factors. OpenGL versions 1.1, 1.2, and 1.3 do not work correctly with SDL
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* 2.0.6.
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* - **opengles**: Supports the `SDL_BLENDOPERATION_ADD` operation with all
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* factors. Color and alpha factors need to be the same. OpenGL ES 1
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* implementation specific: May also support `SDL_BLENDOPERATION_SUBTRACT`
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* and `SDL_BLENDOPERATION_REV_SUBTRACT`. May support color and alpha
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* operations being different from each other. May support color and alpha
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* factors being different from each other.
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* - **opengles2**: Supports the `SDL_BLENDOPERATION_ADD`,
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* `SDL_BLENDOPERATION_SUBTRACT`, `SDL_BLENDOPERATION_REV_SUBTRACT`
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* operations with all factors.
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* - **psp**: No custom blend mode support.
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* - **software**: No custom blend mode support.
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*
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* Some renderers do not provide an alpha component for the default render
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* target. The `SDL_BLENDFACTOR_DST_ALPHA` and
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* `SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA` factors do not have an effect in this
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* case.
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*
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* \param srcColorFactor the SDL_BlendFactor applied to the red, green, and
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* blue components of the source pixels
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* \param dstColorFactor the SDL_BlendFactor applied to the red, green, and
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* blue components of the destination pixels
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* \param colorOperation the SDL_BlendOperation used to combine the red,
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* green, and blue components of the source and
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* destination pixels
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* \param srcAlphaFactor the SDL_BlendFactor applied to the alpha component of
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* the source pixels
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* \param dstAlphaFactor the SDL_BlendFactor applied to the alpha component of
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* the destination pixels
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* \param alphaOperation the SDL_BlendOperation used to combine the alpha
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* component of the source and destination pixels
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* \returns an SDL_BlendMode that represents the chosen factors and
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* operations.
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*
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* \since This function is available since SDL 2.0.6.
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*
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* \sa SDL_SetRenderDrawBlendMode
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* \sa SDL_GetRenderDrawBlendMode
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* \sa SDL_SetTextureBlendMode
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* \sa SDL_GetTextureBlendMode
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*/
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extern DECLSPEC SDL_BlendMode SDLCALL SDL_ComposeCustomBlendMode(SDL_BlendFactor srcColorFactor,
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SDL_BlendFactor dstColorFactor,
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SDL_BlendOperation colorOperation,
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SDL_BlendFactor srcAlphaFactor,
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SDL_BlendFactor dstAlphaFactor,
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SDL_BlendOperation alphaOperation);
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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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