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PSP
======
SDL port for the Sony PSP contributed by
Captian Lex
SDL2 port for the Sony PSP contributed by:
- Captian Lex
- Francisco Javier Trujillo Mata
- Wouter Wijsman
Credit to
Marcus R.Brown,Jim Paris,Matthew H for the original SDL 1.2 for PSP
Geecko for his PSP GU lib "Glib2d"
Building
--------
To build for the PSP, make sure psp-config is in the path and run:
make -f Makefile.psp
## Building
To build SDL2 library for the PSP, make sure you have the latest PSPDev status and run:
```bash
cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=$PSPDEV/psp/share/pspdev.cmake
cmake --build build
cmake --install build
```
## Getting PSP Dev
[Installing PSP Dev](https://github.com/pspdev/pspdev)
## Running on PPSSPP Emulator
[PPSSPP](https://github.com/hrydgard/ppsspp)
[Build Instructions](https://github.com/hrydgard/ppsspp/wiki/Build-instructions)
## Compiling a HelloWorld
[PSP Hello World](https://psp-dev.org/doku.php?id=tutorial:hello_world)
To Do
------
PSP Screen Keyboard
## To Do
- PSP Screen Keyboard
- Dialogs
\ No newline at end of file
Raspberry Pi
================================================================================
============
Requirements:
Raspbian (other Linux distros may work as well).
================================================================================
Features
================================================================================
Features
--------
* Works without X11
* Hardware accelerated OpenGL ES 2.x
......@@ -16,9 +15,8 @@ Raspbian (other Linux distros may work as well).
* Hotplugging of input devices via UDEV
================================================================================
Raspbian Build Dependencies
================================================================================
Raspbian Build Dependencies
---------------------------
sudo apt-get install libudev-dev libasound2-dev libdbus-1-dev
......@@ -28,18 +26,17 @@ OpenGL ES 2.x, it usually comes pre-installed, but in any case:
sudo apt-get install libraspberrypi0 libraspberrypi-bin libraspberrypi-dev
================================================================================
NEON
================================================================================
NEON
----
If your Pi has NEON support, make sure you add -mfpu=neon to your CFLAGS so
that SDL will select some otherwise-disabled highly-optimized code. The
original Pi units don't have NEON, the Pi2 probably does, and the Pi3
definitely does.
================================================================================
Cross compiling from x86 Linux
================================================================================
Cross compiling from x86 Linux
------------------------------
To cross compile SDL for Raspbian from your desktop machine, you'll need a
Raspbian system root and the cross compilation tools. We'll assume these tools
......@@ -92,9 +89,8 @@ To be able to deploy this to /usr/local in the Raspbian system you need to fix u
perl -w -pi -e "s#$PWD/rpi-sdl2-installed#/usr/local#g;" ./rpi-sdl2-installed/lib/libSDL2.la ./rpi-sdl2-installed/lib/pkgconfig/sdl2.pc ./rpi-sdl2-installed/bin/sdl2-config
================================================================================
Apps don't work or poor video/audio performance
================================================================================
Apps don't work or poor video/audio performance
-----------------------------------------------
If you get sound problems, buffer underruns, etc, run "sudo rpi-update" to
update the RPi's firmware. Note that doing so will fix these problems, but it
......@@ -108,17 +104,15 @@ See here how to configure this setting: http://elinux.org/RPiconfig
Using a fixed gpu_mem=128 is the best option (specially if you updated the
firmware, using CMA probably won't work, at least it's the current case).
================================================================================
No input
================================================================================
No input
--------
Make sure you belong to the "input" group.
sudo usermod -aG input `whoami`
================================================================================
No HDMI Audio
================================================================================
No HDMI Audio
-------------
If you notice that ALSA works but there's no audio over HDMI, try adding:
......@@ -128,9 +122,8 @@ to your config.txt file and reboot.
Reference: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=5062
================================================================================
Text Input API support
================================================================================
Text Input API support
----------------------
The Text Input API is supported, with translation of scan codes done via the
kernel symbol tables. For this to work, SDL needs access to a valid console.
......@@ -160,9 +153,9 @@ this determining the CAPS LOCK behavior:
sudo dpkg-reconfigure locales
================================================================================
OpenGL problems
================================================================================
OpenGL problems
---------------
If you have desktop OpenGL headers installed at build time in your RPi or cross
compilation environment, support for it will be built in. However, the chipset
......@@ -177,9 +170,8 @@ environment variable:
export SDL_RENDER_DRIVER=opengles2
================================================================================
Notes
================================================================================
Notes
-----
* When launching apps remotely (via SSH), SDL can prevent local keystrokes from
leaking into the console only if it has root privileges. Launching apps locally
......
RISC OS
=======
Requirements:
* RISC OS 3.5 or later.
* [SharedUnixLibrary](http://www.riscos.info/packages/LibraryDetails.html#SharedUnixLibraryarm).
* [DigitalRenderer](http://www.riscos.info/packages/LibraryDetails.html#DRendererarm), for audio support.
* [Iconv](http://www.netsurf-browser.org/projects/iconv/), for `SDL_iconv` and related functions.
Compiling:
----------
Currently, SDL2 for RISC OS only supports compiling with GCCSDK under Linux. Both the autoconf and CMake build systems are supported.
The following commands can be used to build SDL2 for RISC OS using autoconf:
./configure --host=arm-unknown-riscos --prefix=$GCCSDK_INSTALL_ENV --disable-gcc-atomics
make
make install
The following commands can be used to build SDL2 for RISC OS using CMake:
cmake -Bbuild-riscos -DCMAKE_TOOLCHAIN_FILE=$GCCSDK_INSTALL_ENV/toolchain-riscos.cmake -DRISCOS=ON -DCMAKE_INSTALL_PREFIX=$GCCSDK_INSTALL_ENV -DCMAKE_BUILD_TYPE=Release -DSDL_GCC_ATOMICS=OFF
cmake --build build-riscos
cmake --build build-riscos --target install
Current level of implementation
-------------------------------
The video driver currently provides full screen video support with keyboard and mouse input. Windowed mode is not yet supported, but is planned in the future. Only software rendering is supported.
The filesystem APIs return either Unix-style paths or RISC OS-style paths based on the value of the `__riscosify_control` symbol, as is standard for UnixLib functions.
The audio, loadso, thread and timer APIs are currently provided by UnixLib.
GCC atomics are currently broken on some platforms, meaning it's currently necessary to compile with `--disable-gcc-atomics` using autotools or `-DSDL_GCC_ATOMICS=OFF` using CMake.
The joystick, locale and power APIs are not yet implemented.
Using SDL with Microsoft Visual C++
===================================
### by Lion Kimbro with additions by James Turk
You can either use the precompiled libraries from the [SDL](https://www.libsdl.org/download.php) web site, or you can build SDL
yourself.
### Building SDL
0. To build SDL, your machine must, at a minimum, have the DirectX9.0c SDK installed. It may or may not be retrievable from
the [Microsoft](https://www.microsoft.com) website, so you might need to locate it [online](https://duckduckgo.com/?q=directx9.0c+sdk+download&t=h_&ia=web).
_Editor's note: I've been able to successfully build SDL using Visual Studio 2019 **without** the DX9.0c SDK_
1. Open the Visual Studio solution file at `./VisualC/SDL.sln`.
2. Your IDE will likely prompt you to upgrade this solution file to whatever later version of the IDE you're using. In the `Retarget Projects` dialog,
all of the affected project files should be checked allowing you to use the latest `Windows SDK Version` you have installed, along with
the `Platform Toolset`.
If you choose *NOT* to upgrade to use the latest `Windows SDK Version` or `Platform Toolset`, then you'll need the `Visual Studio 2010 Platform Toolset`.
3. Build the `.dll` and `.lib` files by right clicking on each project in turn (Projects are listed in the _Workspace_
panel in the _FileView_ tab), and selecting `Build`.
You may get a few warnings, but you should not get any errors.
Later, we will refer to the following `.lib` and `.dll` files that have just been generated:
- `./VisualC/Win32/Debug/SDL2.dll` or `./VisualC/Win32/Release/SDL2.dll`
- `./VisualC/Win32/Debug/SDL2.lib` or `./VisualC/Win32/Release/SDL2.lib`
- `./VisualC/Win32/Debug/SDL2main.lib` or `./VisualC/Win32/Release/SDL2main.lib`
_Note for the `x64` versions, just replace `Win32` in the path with `x64`_
### Creating a Project with SDL
- Create a project as a `Win32 Application`.
- Create a C++ file for your project.
- Set the C runtime to `Multi-threaded DLL` in the menu:
`Project|Settings|C/C++ tab|Code Generation|Runtime Library `.
- Add the SDL `include` directory to your list of includes in the menu:
`Project|Settings|C/C++ tab|Preprocessor|Additional include directories `
*VC7 Specific: Instead of doing this, I find it easier to add the
include and library directories to the list that VC7 keeps. Do this by
selecting Tools|Options|Projects|VC++ Directories and under the "Show
Directories For:" dropbox select "Include Files", and click the "New
Directory Icon" and add the [SDLROOT]\\include directory (e.g. If you
installed to c:\\SDL\\ add c:\\SDL\\include). Proceed to change the
dropbox selection to "Library Files" and add [SDLROOT]\\lib.*
The "include directory" I am referring to is the `./include` folder.
Now we're going to use the files that we had created earlier in the *Build SDL* step.
Copy the following file into your Project directory:
- `SDL2.dll`
Add the following files to your project (It is not necessary to copy them to your project directory):
- `SDL2.lib`
- `SDL2main.lib`
To add them to your project, right click on your project, and select
`Add files to project`.
**Instead of adding the files to your project, it is more desirable to add them to the linker options: Project|Properties|Linker|Command Line
and type the names of the libraries to link with in the "Additional Options:" box. Note: This must be done for each build configuration
(e.g. Release,Debug).**
### Hello SDL2
Here's a sample SDL snippet to verify everything is setup in your IDE:
```
#include "SDL.h"
int main( int argc, char* argv[] )
{
const int WIDTH = 640;
const int HEIGHT = 480;
SDL_Window* window = NULL;
SDL_Renderer* renderer = NULL;
SDL_Init(SDL_INIT_VIDEO);
window = SDL_CreateWindow("SDL2 Test", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, SDL_WINDOW_SHOWN);
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
```
### That's it!
I hope that this document has helped you get through the most difficult part of using the SDL: installing it.
Suggestions for improvements should be posted to the [Github Issues](https://github.com/libsdl-org/SDL/issues).
### Credits
Thanks to [Paulus Esterhazy](mailto:pesterhazy@gmx.net), for the work on VC++ port.
This document was originally called "VisualC.txt", and was written by [Sam Lantinga](mailto:slouken@libsdl.org).
Later, it was converted to HTML and expanded into the document that you see today by [Lion Kimbro](mailto:snowlion@sprynet.com).
Minor Fixes and Visual C++ 7 Information (In Green) was added by [James Turk](mailto:james@conceptofzero.net)
PS Vita
=======
SDL port for the Sony Playstation Vita and Sony Playstation TV
Credit to
* xerpi, cpasjuste and rsn8887 for initial (vita2d) port
* vitasdk/dolcesdk devs
* CBPS discord (Namely Graphene and SonicMastr)
Building
--------
To build for the PSVita, make sure you have vitasdk and cmake installed and run:
```
cmake -S. -Bbuild -DCMAKE_TOOLCHAIN_FILE=${VITASDK}/share/vita.toolchain.cmake -DCMAKE_BUILD_TYPE=Release
cmake --build build
cmake --install build
```
Notes
-----
* gles1/gles2 support and renderers are disabled by default and can be enabled by configuring with `-DVIDEO_VITA_PVR=ON`
These renderers support 720p and 1080i resolutions. These can be specified with:
`SDL_setenv("VITA_RESOLUTION", "720", 1);` and `SDL_setenv("VITA_RESOLUTION", "1080", 1);`
* Desktop GL 1.X and 2.X support and renderers are also disabled by default and also can be enabled with `-DVIDEO_VITA_PVR=ON` as long as gl4es4vita is present in your SDK.
They support the same resolutions as the gles1/gles2 backends and require specifying `SDL_setenv("VITA_PVR_OGL", "1", 1);`
anytime before video subsystem initialization.
* gles2 support via PIB is disabled by default and can be enabled by configuring with `-DVIDEO_VITA_PIB=ON`
* By default SDL emits mouse events for touch events on every touchscreen.
Vita has two touchscreens, so it's recommended to use `SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");` and handle touch events instead.
Individual touchscreens can be disabled with:
`SDL_setenv("VITA_DISABLE_TOUCH_FRONT", "1", 1);` and `SDL_setenv("VITA_DISABLE_TOUCH_BACK", "1", 1);`
* Support for L2/R2/R3/R3 buttons, haptic feedback and gamepad led only available on PSTV, or when using external ds4 gamepad on vita.
Windows
================================================================================
================================================================================
OpenGL ES 2.x support
================================================================================
SDL has support for OpenGL ES 2.x under Windows via two alternative
implementations.
The most straightforward method consists in running your app in a system with
a graphic card paired with a relatively recent (as of November of 2013) driver
which supports the WGL_EXT_create_context_es2_profile extension. Vendors known
# Windows
## LLVM and Intel C++ compiler support
SDL will build with the Visual Studio project files with LLVM-based compilers, such as the Intel oneAPI C++
compiler, but you'll have to manually add the "-msse3" command line option
to at least the SDL_audiocvt.c source file, and possibly others. This may
not be necessary if you build SDL with CMake instead of the included Visual
Studio solution.
Details are here: https://github.com/libsdl-org/SDL/issues/5186
## OpenGL ES 2.x support
SDL has support for OpenGL ES 2.x under Windows via two alternative
implementations.
The most straightforward method consists in running your app in a system with
a graphic card paired with a relatively recent (as of November of 2013) driver
which supports the WGL_EXT_create_context_es2_profile extension. Vendors known
to ship said extension on Windows currently include nVidia and Intel.
The other method involves using the ANGLE library (https://code.google.com/p/angleproject/)
If an OpenGL ES 2.x context is requested and no WGL_EXT_create_context_es2_profile
extension is found, SDL will try to load the libEGL.dll library provided by
ANGLE.
The other method involves using the
[ANGLE library](https://code.google.com/p/angleproject/). If an OpenGL ES 2.x
context is requested and no WGL_EXT_create_context_es2_profile extension is
found, SDL will try to load the libEGL.dll library provided by ANGLE.
To obtain the ANGLE binaries, you can either compile from source from
https://chromium.googlesource.com/angle/angle or copy the relevant binaries from
a recent Chrome/Chromium install for Windows. The files you need are:
* libEGL.dll
* libGLESv2.dll
* d3dcompiler_46.dll (supports Windows Vista or later, better shader compiler)
or...
* d3dcompiler_43.dll (supports Windows XP or later)
https://chromium.googlesource.com/angle/angle or copy the relevant binaries
from a recent Chrome/Chromium install for Windows. The files you need are:
- libEGL.dll
- libGLESv2.dll
- d3dcompiler_46.dll (supports Windows Vista or later, better shader
compiler) *or* d3dcompiler_43.dll (supports Windows XP or later)
If you compile ANGLE from source, you can configure it so it does not need the
d3dcompiler_* DLL at all (for details on this, see their documentation).
d3dcompiler_* DLL at all (for details on this, see their documentation).
However, by default SDL will try to preload the d3dcompiler_46.dll to
comply with ANGLE's requirements. If you wish SDL to preload d3dcompiler_43.dll (to
support Windows XP) or to skip this step at all, you can use the
SDL_HINT_VIDEO_WIN_D3DCOMPILER hint (see SDL_hints.h for more details).
comply with ANGLE's requirements. If you wish SDL to preload
d3dcompiler_43.dll (to support Windows XP) or to skip this step at all, you
can use the SDL_HINT_VIDEO_WIN_D3DCOMPILER hint (see SDL_hints.h for more
details).
Known Bugs:
* SDL_GL_SetSwapInterval is currently a no op when using ANGLE. It appears
that there's a bug in the library which prevents the window contents from
refreshing if this is set to anything other than the default value.
Vulkan Surface Support
==============
Support for creating Vulkan surfaces is configured on by default. To disable it change the value of `SDL_VIDEO_VULKAN` to 0 in `SDL_config_windows.h`. You must install the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/) in order to use Vulkan graphics in your application.
- SDL_GL_SetSwapInterval is currently a no op when using ANGLE. It appears
that there's a bug in the library which prevents the window contents from
refreshing if this is set to anything other than the default value.
## Vulkan Surface Support
Support for creating Vulkan surfaces is configured on by default. To disable
it change the value of `SDL_VIDEO_VULKAN` to 0 in `SDL_config_windows.h`. You
must install the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/) in order to
use Vulkan graphics in your application.
......@@ -296,7 +296,7 @@ A few files should be included directly in your app's MSVC project, specifically
included, mouse-position reporting may fail if and when the cursor is
hidden, due to possible bugs/design-oddities in Windows itself.*
To include these files:
To include these files for C/C++ projects:
1. right-click on your project (again, in Visual C++'s Solution Explorer),
navigate to "Add", then choose "Existing Item...".
......@@ -313,11 +313,14 @@ To include these files:
7. change the setting for "Consume Windows Runtime Extension" to "Yes (/ZW)".
8. click the OK button. This will close the dialog.
**NOTE: C++/CX compilation is currently required in at least one file of your
app's project. This is to make sure that Visual C++'s linker builds a 'Windows
Metadata' file (.winmd) for your app. Not doing so can lead to build errors.**
For non-C++ projects, you will need to call SDL_WinRTRunApp from your language's
main function, and generate SDL2-WinRTResources.res manually by using `rc` via
the Developer Command Prompt and including it as a <Win32Resource> within the
first <PropertyGroup> block in your Visual Studio project file.
### 6. Add app code and assets ###
......@@ -349,38 +352,41 @@ source file, such as, "main.cpp".
your project, and open the file in Visual C++'s text editor.
7. Copy and paste the following code into the new file, then save it.
#include <SDL.h>
int main(int argc, char **argv)
{
SDL_DisplayMode mode;
SDL_Window * window = NULL;
SDL_Renderer * renderer = NULL;
SDL_Event evt;
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
return 1;
}
```c
#include <SDL.h>
if (SDL_GetCurrentDisplayMode(0, &mode) != 0) {
return 1;
}
int main(int argc, char **argv)
{
SDL_DisplayMode mode;
SDL_Window * window = NULL;
SDL_Renderer * renderer = NULL;
SDL_Event evt;
SDL_bool keep_going = SDL_TRUE;
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
return 1;
} else if (SDL_GetCurrentDisplayMode(0, &mode) != 0) {
return 1;
} else if (SDL_CreateWindowAndRenderer(mode.w, mode.h, SDL_WINDOW_FULLSCREEN, &window, &renderer) != 0) {
return 1;
}
if (SDL_CreateWindowAndRenderer(mode.w, mode.h, SDL_WINDOW_FULLSCREEN, &window, &renderer) != 0) {
return 1;
while (keep_going) {
while (SDL_PollEvent(&evt)) {
if ((evt.type == SDL_KEYDOWN) && (evt.key.keysym.sym == SDLK_ESCAPE)) {
keep_going = SDL_FALSE;
}
}
while (1) {
while (SDL_PollEvent(&evt)) {
}
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
}
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
}
SDL_Quit();
return 0;
}
```
#### 6.B. Adding code and assets ####
......
......@@ -14,14 +14,14 @@ hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.
SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
SDL officially supports Windows, macOS, Linux, iOS, and Android.
Support for other platforms may be found in the source code.
SDL is written in C, works natively with C++, and there are bindings
available for several other languages, including C# and Python.
This library is distributed under the zlib license, which can be found
in the file "COPYING.txt".
in the file "LICENSE.txt".
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
......@@ -35,10 +35,11 @@ More documentation and FAQs are available online at [the wiki](http://wiki.libsd
- [DynAPI](README-dynapi.md)
- [Emscripten](README-emscripten.md)
- [Gesture](README-gesture.md)
- [Mercurial](README-hg.md)
- [Git](README-git.md)
- [iOS](README-ios.md)
- [Linux](README-linux.md)
- [OS X](README-macosx.md)
- [macOS](README-macos.md)
- [OS/2](README-os2.md)
- [Native Client](README-nacl.md)
- [Pandora](README-pandora.md)
- [Supported Platforms](README-platforms.md)
......@@ -49,15 +50,16 @@ More documentation and FAQs are available online at [the wiki](http://wiki.libsd
- [WinCE](README-wince.md)
- [Windows](README-windows.md)
- [WinRT](README-winrt.md)
- [PSVita](README-vita.md)
If you need help with the library, or just want to discuss SDL related
issues, you can join the [developers mailing list](http://www.libsdl.org/mailing-list.php)
issues, you can join the [SDL Discourse](https://discourse.libsdl.org/),
which can be used as a web forum or a mailing list, at your preference.
If you want to report bugs or contribute patches, please submit them to
[bugzilla](https://bugzilla.libsdl.org/)
[our bug tracker](https://github.com/libsdl-org/SDL/issues)
Enjoy!
Sam Lantinga <mailto:slouken@libsdl.org>
No preview for this file type
......@@ -39,7 +39,7 @@ while test $# -gt 0; do
echo $exec_prefix
;;
--version)
echo 2.0.9
echo 2.0.22
;;
--cflags)
echo -I${prefix}/include/SDL2 -Dmain=SDL_main
......@@ -49,7 +49,7 @@ while test $# -gt 0; do
;;
--static-libs)
# --libs|--static-libs)
echo -L${exec_prefix}/lib -lmingw32 -lSDL2main -lSDL2 -mwindows -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
echo -L${exec_prefix}/lib -lmingw32 -lSDL2main -lSDL2 -mwindows -Wl,--dynamicbase -Wl,--nxcompat -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid
;;
*)
echo "${usage}" 1>&2
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -42,11 +42,13 @@
#include "SDL_filesystem.h"
#include "SDL_gamecontroller.h"
#include "SDL_haptic.h"
#include "SDL_hidapi.h"
#include "SDL_hints.h"
#include "SDL_joystick.h"
#include "SDL_loadso.h"
#include "SDL_log.h"
#include "SDL_messagebox.h"
#include "SDL_metal.h"
#include "SDL_mutex.h"
#include "SDL_power.h"
#include "SDL_render.h"
......@@ -58,6 +60,8 @@
#include "SDL_timer.h"
#include "SDL_version.h"
#include "SDL_video.h"
#include "SDL_locale.h"
#include "SDL_misc.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
......@@ -90,37 +94,130 @@ extern "C" {
/* @} */
/**
* This function initializes the subsystems specified by \c flags
* Initialize the SDL library.
*
* SDL_Init() simply forwards to calling SDL_InitSubSystem(). Therefore, the
* two may be used interchangeably. Though for readability of your code
* SDL_InitSubSystem() might be preferred.
*
* The file I/O (for example: SDL_RWFromFile) and threading (SDL_CreateThread)
* subsystems are initialized by default. Message boxes
* (SDL_ShowSimpleMessageBox) also attempt to work without initializing the
* video subsystem, in hopes of being useful in showing an error dialog when
* SDL_Init fails. You must specifically initialize other subsystems if you
* use them in your application.
*
* Logging (such as SDL_Log) works without initialization, too.
*
* `flags` may be any of the following OR'd together:
*
* - `SDL_INIT_TIMER`: timer subsystem
* - `SDL_INIT_AUDIO`: audio subsystem
* - `SDL_INIT_VIDEO`: video subsystem; automatically initializes the events
* subsystem
* - `SDL_INIT_JOYSTICK`: joystick subsystem; automatically initializes the
* events subsystem
* - `SDL_INIT_HAPTIC`: haptic (force feedback) subsystem
* - `SDL_INIT_GAMECONTROLLER`: controller subsystem; automatically
* initializes the joystick subsystem
* - `SDL_INIT_EVENTS`: events subsystem
* - `SDL_INIT_EVERYTHING`: all of the above subsystems
* - `SDL_INIT_NOPARACHUTE`: compatibility; this flag is ignored
*
* Subsystem initialization is ref-counted, you must call SDL_QuitSubSystem()
* for each SDL_InitSubSystem() to correctly shutdown a subsystem manually (or
* call SDL_Quit() to force shutdown). If a subsystem is already loaded then
* this call will increase the ref-count and return.
*
* \param flags subsystem initialization flags
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_InitSubSystem
* \sa SDL_Quit
* \sa SDL_SetMainReady
* \sa SDL_WasInit
*/
extern DECLSPEC int SDLCALL SDL_Init(Uint32 flags);
/**
* This function initializes specific SDL subsystems
* Compatibility function to initialize the SDL library.
*
* In SDL2, this function and SDL_Init() are interchangeable.
*
* Subsystem initialization is ref-counted, you must call
* SDL_QuitSubSystem() for each SDL_InitSubSystem() to correctly
* shutdown a subsystem manually (or call SDL_Quit() to force shutdown).
* If a subsystem is already loaded then this call will
* increase the ref-count and return.
* \param flags any of the flags used by SDL_Init(); see SDL_Init for details.
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_Init
* \sa SDL_Quit
* \sa SDL_QuitSubSystem
*/
extern DECLSPEC int SDLCALL SDL_InitSubSystem(Uint32 flags);
/**
* This function cleans up specific SDL subsystems
* Shut down specific SDL subsystems.
*
* If you start a subsystem using a call to that subsystem's init function
* (for example SDL_VideoInit()) instead of SDL_Init() or SDL_InitSubSystem(),
* SDL_QuitSubSystem() and SDL_WasInit() will not work. You will need to use
* that subsystem's quit function (SDL_VideoQuit()) directly instead. But
* generally, you should not be using those functions directly anyhow; use
* SDL_Init() instead.
*
* You still need to call SDL_Quit() even if you close all open subsystems
* with SDL_QuitSubSystem().
*
* \param flags any of the flags used by SDL_Init(); see SDL_Init for details.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_InitSubSystem
* \sa SDL_Quit
*/
extern DECLSPEC void SDLCALL SDL_QuitSubSystem(Uint32 flags);
/**
* This function returns a mask of the specified subsystems which have
* previously been initialized.
* Get a mask of the specified subsystems which are currently initialized.
*
* \param flags any of the flags used by SDL_Init(); see SDL_Init for details.
* \returns a mask of all initialized subsystems if `flags` is 0, otherwise it
* returns the initialization status of the specified subsystems.
*
* The return value does not include SDL_INIT_NOPARACHUTE.
*
* If \c flags is 0, it returns a mask of all initialized subsystems.
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_Init
* \sa SDL_InitSubSystem
*/
extern DECLSPEC Uint32 SDLCALL SDL_WasInit(Uint32 flags);
/**
* This function cleans up all initialized subsystems. You should
* call it upon all exit conditions.
* Clean up all initialized subsystems.
*
* You should call this function even if you have already shutdown each
* initialized subsystem with SDL_QuitSubSystem(). It is safe to call this
* function even in the case of errors in initialization.
*
* If you start a subsystem using a call to that subsystem's init function
* (for example SDL_VideoInit()) instead of SDL_Init() or SDL_InitSubSystem(),
* then you must use that subsystem's quit function (SDL_VideoQuit()) to shut
* it down before calling SDL_Quit(). But generally, you should not be using
* those functions directly anyhow; use SDL_Init() instead.
*
* You can use this function with atexit() to ensure that it is run when your
* application is shutdown, but it is not wise to do this from a library or
* other dynamically loaded code.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_Init
* \sa SDL_QuitSubSystem
*/
extern DECLSPEC void SDLCALL SDL_Quit(void);
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -53,6 +53,10 @@ assert can have unique static variables associated with it.
#define SDL_TriggerBreakpoint() __debugbreak()
#elif ( (!defined(__NACL__)) && ((defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))) )
#define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "int $3\n\t" )
#elif ( defined(__APPLE__) && (defined(__arm64__) || defined(__aarch64__)) ) /* this might work on other ARM targets, but this is a known quantity... */
#define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "brk #22\n\t" )
#elif defined(__APPLE__) && defined(__arm__)
#define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "bkpt #22\n\t" )
#elif defined(__386__) && defined(__WATCOMC__)
#define SDL_TriggerBreakpoint() { _asm { int 0x03 } }
#elif defined(HAVE_SIGNAL_H) && !defined(__WATCOMC__)
......@@ -185,92 +189,121 @@ extern DECLSPEC SDL_AssertState SDLCALL SDL_ReportAssertion(SDL_AssertData *,
#define SDL_assert_always(condition) SDL_enabled_assert(condition)
/**
* A callback that fires when an SDL assertion fails.
*
* \param data a pointer to the SDL_AssertData structure corresponding to the
* current assertion
* \param userdata what was passed as `userdata` to SDL_SetAssertionHandler()
* \returns an SDL_AssertState value indicating how to handle the failure.
*/
typedef SDL_AssertState (SDLCALL *SDL_AssertionHandler)(
const SDL_AssertData* data, void* userdata);
/**
* \brief Set an application-defined assertion handler.
* Set an application-defined assertion handler.
*
* This allows an app to show its own assertion UI and/or force the
* response to an assertion failure. If the app doesn't provide this, SDL
* will try to do the right thing, popping up a system-specific GUI dialog,
* and probably minimizing any fullscreen windows.
* This function allows an application to show its own assertion UI and/or
* force the response to an assertion failure. If the application doesn't
* provide this, SDL will try to do the right thing, popping up a
* system-specific GUI dialog, and probably minimizing any fullscreen windows.
*
* This callback may fire from any thread, but it runs wrapped in a mutex, so
* it will only fire from one thread at a time.
* This callback may fire from any thread, but it runs wrapped in a mutex, so
* it will only fire from one thread at a time.
*
* Setting the callback to NULL restores SDL's original internal handler.
* This callback is NOT reset to SDL's internal handler upon SDL_Quit()!
*
* This callback is NOT reset to SDL's internal handler upon SDL_Quit()!
* \param handler the SDL_AssertionHandler function to call when an assertion
* fails or NULL for the default handler
* \param userdata a pointer that is passed to `handler`
*
* Return SDL_AssertState value of how to handle the assertion failure.
* \since This function is available since SDL 2.0.0.
*
* \param handler Callback function, called when an assertion fails.
* \param userdata A pointer passed to the callback as-is.
* \sa SDL_GetAssertionHandler
*/
extern DECLSPEC void SDLCALL SDL_SetAssertionHandler(
SDL_AssertionHandler handler,
void *userdata);
/**
* \brief Get the default assertion handler.
* Get the default assertion handler.
*
* This returns the function pointer that is called by default when an
* assertion is triggered. This is an internal function provided by SDL,
* that is used for assertions when SDL_SetAssertionHandler() hasn't been
* used to provide a different function.
* This returns the function pointer that is called by default when an
* assertion is triggered. This is an internal function provided by SDL, that
* is used for assertions when SDL_SetAssertionHandler() hasn't been used to
* provide a different function.
*
* \return The default SDL_AssertionHandler that is called when an assert triggers.
* \returns the default SDL_AssertionHandler that is called when an assert
* triggers.
*
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_GetAssertionHandler
*/
extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetDefaultAssertionHandler(void);
/**
* \brief Get the current assertion handler.
* Get the current assertion handler.
*
* This returns the function pointer that is called when an assertion is
* triggered. This is either the value last passed to
* SDL_SetAssertionHandler(), or if no application-specified function is set,
* is equivalent to calling SDL_GetDefaultAssertionHandler().
*
* This returns the function pointer that is called when an assertion is
* triggered. This is either the value last passed to
* SDL_SetAssertionHandler(), or if no application-specified function is
* set, is equivalent to calling SDL_GetDefaultAssertionHandler().
* The parameter `puserdata` is a pointer to a void*, which will store the
* "userdata" pointer that was passed to SDL_SetAssertionHandler(). This value
* will always be NULL for the default handler. If you don't care about this
* data, it is safe to pass a NULL pointer to this function to ignore it.
*
* \param puserdata Pointer to a void*, which will store the "userdata"
* pointer that was passed to SDL_SetAssertionHandler().
* This value will always be NULL for the default handler.
* If you don't care about this data, it is safe to pass
* a NULL pointer to this function to ignore it.
* \return The SDL_AssertionHandler that is called when an assert triggers.
* \param puserdata pointer which is filled with the "userdata" pointer that
* was passed to SDL_SetAssertionHandler()
* \returns the SDL_AssertionHandler that is called when an assert triggers.
*
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_SetAssertionHandler
*/
extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetAssertionHandler(void **puserdata);
/**
* \brief Get a list of all assertion failures.
* Get a list of all assertion failures.
*
* This function gets all assertions triggered since the last call to
* SDL_ResetAssertionReport(), or the start of the program.
*
* Get all assertions triggered since last call to SDL_ResetAssertionReport(),
* or the start of the program.
* The proper way to examine this data looks something like this:
*
* The proper way to examine this data looks something like this:
* ```c
* const SDL_AssertData *item = SDL_GetAssertionReport();
* while (item) {
* printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\\n",
* item->condition, item->function, item->filename,
* item->linenum, item->trigger_count,
* item->always_ignore ? "yes" : "no");
* item = item->next;
* }
* ```
*
* <code>
* const SDL_AssertData *item = SDL_GetAssertionReport();
* while (item) {
* printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\\n",
* item->condition, item->function, item->filename,
* item->linenum, item->trigger_count,
* item->always_ignore ? "yes" : "no");
* item = item->next;
* }
* </code>
* \returns a list of all failed assertions or NULL if the list is empty. This
* memory should not be modified or freed by the application.
*
* \return List of all assertions.
* \sa SDL_ResetAssertionReport
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_ResetAssertionReport
*/
extern DECLSPEC const SDL_AssertData * SDLCALL SDL_GetAssertionReport(void);
/**
* \brief Reset the list of all assertion failures.
* Clear the list of all assertion failures.
*
* This function will clear the list of all assertions triggered up to that
* point. Immediately following this call, SDL_GetAssertionReport will return
* no items. In addition, any previously-triggered assertions will be reset to
* a trigger_count of zero, and their always_ignore state will be false.
*
* Reset list of all assertions triggered.
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_GetAssertionReport
* \sa SDL_GetAssertionReport
*/
extern DECLSPEC void SDLCALL SDL_ResetAssertionReport(void);
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -89,25 +89,51 @@ extern "C" {
typedef int SDL_SpinLock;
/**
* \brief Try to lock a spin lock by setting it to a non-zero value.
* Try to lock a spin lock by setting it to a non-zero value.
*
* \param lock Points to the lock.
* ***Please note that spinlocks are dangerous if you don't know what you're
* doing. Please be careful using any sort of spinlock!***
*
* \return SDL_TRUE if the lock succeeded, SDL_FALSE if the lock is already held.
* \param lock a pointer to a lock variable
* \returns SDL_TRUE if the lock succeeded, SDL_FALSE if the lock is already
* held.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_AtomicLock
* \sa SDL_AtomicUnlock
*/
extern DECLSPEC SDL_bool SDLCALL SDL_AtomicTryLock(SDL_SpinLock *lock);
/**
* \brief Lock a spin lock by setting it to a non-zero value.
* Lock a spin lock by setting it to a non-zero value.
*
* ***Please note that spinlocks are dangerous if you don't know what you're
* doing. Please be careful using any sort of spinlock!***
*
* \param lock a pointer to a lock variable
*
* \since This function is available since SDL 2.0.0.
*
* \param lock Points to the lock.
* \sa SDL_AtomicTryLock
* \sa SDL_AtomicUnlock
*/
extern DECLSPEC void SDLCALL SDL_AtomicLock(SDL_SpinLock *lock);
/**
* \brief Unlock a spin lock by setting it to 0. Always returns immediately
* Unlock a spin lock by setting it to 0.
*
* \param lock Points to the lock.
* Always returns immediately.
*
* ***Please note that spinlocks are dangerous if you don't know what you're
* doing. Please be careful using any sort of spinlock!***
*
* \param lock a pointer to a lock variable
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_AtomicLock
* \sa SDL_AtomicTryLock
*/
extern DECLSPEC void SDLCALL SDL_AtomicUnlock(SDL_SpinLock *lock);
......@@ -126,7 +152,7 @@ void _ReadWriteBarrier(void);
/* This is correct for all CPUs when using GCC or Solaris Studio 12.1+. */
#define SDL_CompilerBarrier() __asm__ __volatile__ ("" : : : "memory")
#elif defined(__WATCOMC__)
extern _inline void SDL_CompilerBarrier (void);
extern __inline void SDL_CompilerBarrier(void);
#pragma aux SDL_CompilerBarrier = "" parm [] modify exact [];
#else
#define SDL_CompilerBarrier() \
......@@ -137,20 +163,22 @@ extern _inline void SDL_CompilerBarrier (void);
* Memory barriers are designed to prevent reads and writes from being
* reordered by the compiler and being seen out of order on multi-core CPUs.
*
* A typical pattern would be for thread A to write some data and a flag,
* and for thread B to read the flag and get the data. In this case you
* would insert a release barrier between writing the data and the flag,
* A typical pattern would be for thread A to write some data and a flag, and
* for thread B to read the flag and get the data. In this case you would
* insert a release barrier between writing the data and the flag,
* guaranteeing that the data write completes no later than the flag is
* written, and you would insert an acquire barrier between reading the
* flag and reading the data, to ensure that all the reads associated
* with the flag have completed.
* written, and you would insert an acquire barrier between reading the flag
* and reading the data, to ensure that all the reads associated with the flag
* have completed.
*
* In this pattern you should always see a release barrier paired with
* an acquire barrier and you should gate the data reads/writes with a
* single flag variable.
* In this pattern you should always see a release barrier paired with an
* acquire barrier and you should gate the data reads/writes with a single
* flag variable.
*
* For more information on these semantics, take a look at the blog post:
* http://preshing.com/20120913/acquire-and-release-semantics
*
* \since This function is available since SDL 2.0.6.
*/
extern DECLSPEC void SDLCALL SDL_MemoryBarrierReleaseFunction(void);
extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
......@@ -162,12 +190,29 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("dmb ish" : : : "memory")
#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("dmb ish" : : : "memory")
#elif defined(__GNUC__) && defined(__arm__)
#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)
#if 0 /* defined(__LINUX__) || defined(__ANDROID__) */
/* Information from:
https://chromium.googlesource.com/chromium/chromium/+/trunk/base/atomicops_internals_arm_gcc.h#19
The Linux kernel provides a helper function which provides the right code for a memory barrier,
hard-coded at address 0xffff0fa0
*/
typedef void (*SDL_KernelMemoryBarrierFunc)();
#define SDL_MemoryBarrierRelease() ((SDL_KernelMemoryBarrierFunc)0xffff0fa0)()
#define SDL_MemoryBarrierAcquire() ((SDL_KernelMemoryBarrierFunc)0xffff0fa0)()
#elif 0 /* defined(__QNXNTO__) */
#include <sys/cpuinline.h>
#define SDL_MemoryBarrierRelease() __cpu_membarrier()
#define SDL_MemoryBarrierAcquire() __cpu_membarrier()
#else
#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) || defined(__ARM_ARCH_8A__)
#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("dmb ish" : : : "memory")
#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("dmb ish" : : : "memory")
#elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_5TE__)
#ifdef __thumb__
/* The mcr instruction isn't available in thumb mode, use real functions */
#define SDL_MEMORY_BARRIER_USES_FUNCTION
#define SDL_MemoryBarrierRelease() SDL_MemoryBarrierReleaseFunction()
#define SDL_MemoryBarrierAcquire() SDL_MemoryBarrierAcquireFunction()
#else
......@@ -177,6 +222,7 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
#else
#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("" : : : "memory")
#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("" : : : "memory")
#endif /* __LINUX__ || __ANDROID__ */
#endif /* __GNUC__ && __arm__ */
#else
#if (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))
......@@ -198,32 +244,73 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
typedef struct { int value; } SDL_atomic_t;
/**
* \brief Set an atomic variable to a new value if it is currently an old value.
* Set an atomic variable to a new value if it is currently an old value.
*
* \return SDL_TRUE if the atomic variable was set, SDL_FALSE otherwise.
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \note If you don't know what this function is for, you shouldn't use it!
*/
* \param a a pointer to an SDL_atomic_t variable to be modified
* \param oldval the old value
* \param newval the new value
* \returns SDL_TRUE if the atomic variable was set, SDL_FALSE otherwise.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_AtomicCASPtr
* \sa SDL_AtomicGet
* \sa SDL_AtomicSet
*/
extern DECLSPEC SDL_bool SDLCALL SDL_AtomicCAS(SDL_atomic_t *a, int oldval, int newval);
/**
* \brief Set an atomic variable to a value.
* Set an atomic variable to a value.
*
* This function also acts as a full memory barrier.
*
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \param a a pointer to an SDL_atomic_t variable to be modified
* \param v the desired value
* \returns the previous value of the atomic variable.
*
* \return The previous value of the atomic variable.
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_AtomicGet
*/
extern DECLSPEC int SDLCALL SDL_AtomicSet(SDL_atomic_t *a, int v);
/**
* \brief Get the value of an atomic variable
* Get the value of an atomic variable.
*
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \param a a pointer to an SDL_atomic_t variable
* \returns the current value of an atomic variable.
*
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_AtomicSet
*/
extern DECLSPEC int SDLCALL SDL_AtomicGet(SDL_atomic_t *a);
/**
* \brief Add to an atomic variable.
* Add to an atomic variable.
*
* \return The previous value of the atomic variable.
* This function also acts as a full memory barrier.
*
* \note This same style can be used for any number operation
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \param a a pointer to an SDL_atomic_t variable to be modified
* \param v the desired value to add
* \returns the previous value of the atomic variable.
*
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_AtomicDecRef
* \sa SDL_AtomicIncRef
*/
extern DECLSPEC int SDLCALL SDL_AtomicAdd(SDL_atomic_t *a, int v);
......@@ -245,23 +332,54 @@ extern DECLSPEC int SDLCALL SDL_AtomicAdd(SDL_atomic_t *a, int v);
#endif
/**
* \brief Set a pointer to a new value if it is currently an old value.
* Set a pointer to a new value if it is currently an old value.
*
* \return SDL_TRUE if the pointer was set, SDL_FALSE otherwise.
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \note If you don't know what this function is for, you shouldn't use it!
*/
* \param a a pointer to a pointer
* \param oldval the old pointer value
* \param newval the new pointer value
* \returns SDL_TRUE if the pointer was set, SDL_FALSE otherwise.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_AtomicCAS
* \sa SDL_AtomicGetPtr
* \sa SDL_AtomicSetPtr
*/
extern DECLSPEC SDL_bool SDLCALL SDL_AtomicCASPtr(void **a, void *oldval, void *newval);
/**
* \brief Set a pointer to a value atomically.
* Set a pointer to a value atomically.
*
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \param a a pointer to a pointer
* \param v the desired pointer value
* \returns the previous value of the pointer.
*
* \since This function is available since SDL 2.0.2.
*
* \return The previous value of the pointer.
* \sa SDL_AtomicCASPtr
* \sa SDL_AtomicGetPtr
*/
extern DECLSPEC void* SDLCALL SDL_AtomicSetPtr(void **a, void* v);
/**
* \brief Get the value of a pointer atomically.
* Get the value of a pointer atomically.
*
* ***Note: If you don't know what this function is for, you shouldn't use
* it!***
*
* \param a a pointer to a pointer
* \returns the current value of a pointer.
*
* \since This function is available since SDL 2.0.2.
*
* \sa SDL_AtomicCASPtr
* \sa SDL_AtomicSetPtr
*/
extern DECLSPEC void* SDLCALL SDL_AtomicGetPtr(void **a);
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -45,13 +45,12 @@ extern "C" {
* with 0. This operation can also be stated as "count leading zeroes" and
* "log base 2".
*
* \return Index of the most significant bit, or -1 if the value is 0.
* \return the index of the most significant bit, or -1 if the value is 0.
*/
#if defined(__WATCOMC__) && defined(__386__)
extern _inline int _SDL_clz_watcom (Uint32);
#pragma aux _SDL_clz_watcom = \
extern __inline int _SDL_bsr_watcom(Uint32);
#pragma aux _SDL_bsr_watcom = \
"bsr eax, eax" \
"xor eax, 31" \
parm [eax] nomemory \
value [eax] \
modify exact [eax] nomemory;
......@@ -72,7 +71,13 @@ SDL_MostSignificantBitIndex32(Uint32 x)
if (x == 0) {
return -1;
}
return 31 - _SDL_clz_watcom(x);
return _SDL_bsr_watcom(x);
#elif defined(_MSC_VER)
unsigned long index;
if (_BitScanReverse(&index, x)) {
return index;
}
return -1;
#else
/* Based off of Bit Twiddling Hacks by Sean Eron Anderson
* <seander@cs.stanford.edu>, released in the public domain.
......@@ -101,6 +106,15 @@ SDL_MostSignificantBitIndex32(Uint32 x)
#endif
}
SDL_FORCE_INLINE SDL_bool
SDL_HasExactlyOneBitSet32(Uint32 x)
{
if (x && !(x & (x - 1))) {
return SDL_TRUE;
}
return SDL_FALSE;
}
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -50,6 +50,9 @@ typedef enum
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() */
......@@ -64,9 +67,8 @@ 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_MINIMUM = 0x4, /**< min(dst, src) : supported by D3D9, D3D11 */
SDL_BLENDOPERATION_MAXIMUM = 0x5 /**< max(dst, src) : supported by D3D9, D3D11 */
} SDL_BlendOperation;
/**
......@@ -84,23 +86,99 @@ typedef enum
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
* \param dstColorFactor
* \param colorOperation
* \param srcAlphaFactor
* \param dstAlphaFactor
* \param alphaOperation
*
* The result of the blend mode operation will be:
* dstRGB = dstRGB * dstColorFactor colorOperation srcRGB * srcColorFactor
* and
* dstA = dstA * dstAlphaFactor alphaOperation srcA * srcAlphaFactor
* 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,
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -39,23 +39,46 @@ extern "C" {
/* Function prototypes */
/**
* \brief Put UTF-8 text into the clipboard
* Put UTF-8 text into the clipboard.
*
* \sa SDL_GetClipboardText()
* \param text the text to store in the clipboard
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_GetClipboardText
* \sa SDL_HasClipboardText
*/
extern DECLSPEC int SDLCALL SDL_SetClipboardText(const char *text);
/**
* \brief Get UTF-8 text from the clipboard, which must be freed with SDL_free()
* Get UTF-8 text from the clipboard, which must be freed with SDL_free().
*
* This functions returns empty string if there was not enough memory left for
* a copy of the clipboard's content.
*
* \returns the clipboard text on success or an empty string on failure; call
* SDL_GetError() for more information. Caller must call SDL_free()
* on the returned pointer when done with it (even if there was an
* error).
*
* \sa SDL_SetClipboardText()
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_HasClipboardText
* \sa SDL_SetClipboardText
*/
extern DECLSPEC char * SDLCALL SDL_GetClipboardText(void);
/**
* \brief Returns a flag indicating whether the clipboard exists and contains a text string that is non-empty
* Query whether the clipboard exists and contains a non-empty text string.
*
* \returns SDL_TRUE if the clipboard has text, or SDL_FALSE if it does not.
*
* \since This function is available since SDL 2.0.0.
*
* \sa SDL_GetClipboardText()
* \sa SDL_GetClipboardText
* \sa SDL_SetClipboardText
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasClipboardText(void);
......
/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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
......@@ -25,10 +25,23 @@
#include "SDL_platform.h"
/* winsdkver.h defines _WIN32_MAXVER for SDK version detection. It is present since at least the Windows 7 SDK,
* but out of caution we'll only use it if the compiler supports __has_include() to confirm its presence.
* If your compiler doesn't support __has_include() but you have winsdkver.h, define HAVE_WINSDKVER_H. */
#if !defined(HAVE_WINSDKVER_H) && defined(__has_include)
#if __has_include(<winsdkver.h>)
#define HAVE_WINSDKVER_H 1
#endif
#endif
#ifdef HAVE_WINSDKVER_H
#include <winsdkver.h>
#endif
/* This is a set of defines to configure the SDL features */
#if !defined(_STDINT_H_) && (!defined(HAVE_STDINT_H) || !_HAVE_STDINT_H)
#if defined(__GNUC__) || defined(__DMC__) || defined(__WATCOMC__)
#if defined(__GNUC__) || defined(__DMC__) || defined(__WATCOMC__) || defined(__clang__) || defined(__BORLANDC__) || defined(__CODEGEARC__)
#define HAVE_STDINT_H 1
#elif defined(_MSC_VER)
typedef signed __int8 int8_t;
......@@ -77,14 +90,33 @@ typedef unsigned int uintptr_t;
# define SIZEOF_VOIDP 4
#endif
#ifdef __clang__
# define HAVE_GCC_ATOMICS 1
#endif
#define HAVE_DDRAW_H 1
#define HAVE_DINPUT_H 1
#define HAVE_DSOUND_H 1
#define HAVE_DXGI_H 1
#define HAVE_XINPUT_H 1
#if defined(_WIN32_MAXVER) && _WIN32_MAXVER >= 0x0A00 /* Windows 10 SDK */
#define HAVE_WINDOWS_GAMING_INPUT_H 1
#endif
#if defined(_WIN32_MAXVER) && _WIN32_MAXVER >= 0x0602 /* Windows 8 SDK */
#define HAVE_D3D11_H 1
#define HAVE_ROAPI_H 1
#endif
#define HAVE_MMDEVICEAPI_H 1
#define HAVE_AUDIOCLIENT_H 1
#define HAVE_ENDPOINTVOLUME_H 1
#define HAVE_TPCSHRD_H 1
#define HAVE_SENSORSAPI_H 1
#if (defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64)) && (defined(_MSC_VER) && _MSC_VER >= 1600)
#define HAVE_IMMINTRIN_H 1
#elif defined(__has_include) && (defined(__i386__) || defined(__x86_64))
# if __has_include(<immintrin.h>)
# define HAVE_IMMINTRIN_H 1
# endif
#endif
/* This is disabled by default to avoid C runtime dependencies and manifest requirements */
#ifdef HAVE_LIBC
......@@ -118,6 +150,7 @@ typedef unsigned int uintptr_t;
#define HAVE_STRCHR 1
#define HAVE_STRRCHR 1
#define HAVE_STRSTR 1
/* #undef HAVE_STRTOK_R */
/* These functions have security warnings, so we won't use them */
/* #undef HAVE__LTOA */
/* #undef HAVE__ULTOA */
......@@ -130,6 +163,9 @@ typedef unsigned int uintptr_t;
#define HAVE_STRNCMP 1
#define HAVE__STRICMP 1
#define HAVE__STRNICMP 1
#define HAVE__WCSICMP 1
#define HAVE__WCSNICMP 1
#define HAVE__WCSDUP 1
#define HAVE_ACOS 1
#define HAVE_ACOSF 1
#define HAVE_ASIN 1
......@@ -139,7 +175,7 @@ typedef unsigned int uintptr_t;
#define HAVE_ATAN2 1
#define HAVE_ATAN2F 1
#define HAVE_CEILF 1
#define HAVE__COPYSIGN 1
#define HAVE__COPYSIGN 1
#define HAVE_COS 1
#define HAVE_COSF 1
#define HAVE_EXP 1
......@@ -166,9 +202,16 @@ typedef unsigned int uintptr_t;
/* These functions were added with the VC++ 2013 C runtime library */
#if _MSC_VER >= 1800
#define HAVE_STRTOLL 1
#define HAVE_STRTOULL 1
#define HAVE_VSSCANF 1
#define HAVE_LROUND 1
#define HAVE_LROUNDF 1
#define HAVE_ROUND 1
#define HAVE_ROUNDF 1
#define HAVE_SCALBN 1
#define HAVE_SCALBNF 1
#define HAVE_SCALBNF 1
#define HAVE_TRUNC 1
#define HAVE_TRUNCF 1
#endif
/* This function is available with at least the VC++ 2008 C runtime library */
#if _MSC_VER >= 1400
......@@ -192,18 +235,26 @@ typedef unsigned int uintptr_t;
/* Enable various input drivers */
#define SDL_JOYSTICK_DINPUT 1
#define SDL_JOYSTICK_XINPUT 1
#define SDL_JOYSTICK_HIDAPI 1
#ifndef __WINRT__
#define SDL_JOYSTICK_RAWINPUT 1
#endif
#define SDL_JOYSTICK_VIRTUAL 1
#ifdef HAVE_WINDOWS_GAMING_INPUT_H
#define SDL_JOYSTICK_WGI 1
#endif
#define SDL_JOYSTICK_XINPUT 1
#define SDL_HAPTIC_DINPUT 1
#define SDL_HAPTIC_XINPUT 1
/* Enable the dummy sensor driver */
#define SDL_SENSOR_DUMMY 1
/* Enable the sensor driver */
#define SDL_SENSOR_WINDOWS 1
/* Enable various shared object loading systems */
#define SDL_LOADSO_WINDOWS 1
/* Enable various threading systems */
#define SDL_THREAD_GENERIC_COND_SUFFIX 1
#define SDL_THREAD_WINDOWS 1
/* Enable various timer systems */
......@@ -216,8 +267,8 @@ typedef unsigned int uintptr_t;
#ifndef SDL_VIDEO_RENDER_D3D
#define SDL_VIDEO_RENDER_D3D 1
#endif
#ifndef SDL_VIDEO_RENDER_D3D11
#define SDL_VIDEO_RENDER_D3D11 0
#if !defined(SDL_VIDEO_RENDER_D3D11) && defined(HAVE_D3D11_H)
#define SDL_VIDEO_RENDER_D3D11 1
#endif
/* Enable OpenGL support */
......@@ -255,3 +306,5 @@ typedef unsigned int uintptr_t;
#endif
#endif /* SDL_config_windows_h_ */
/* vi: set ts=4 sw=4 expandtab: */