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Questions tagged [sdl-2]

For questions and issues regarding Simple DirectMedia Layer 2 (SDL2). If you're using SDL 1.2, use tag [sdl-1.2]. If you're questioning the library in general, use tag [sdl].

Simple DirectMedia Layer 2.0 (SDL2) is the second generation of a popular open source cross-platform library that provides a simple interface to graphics, sound, and input devices. The new version comes with lots of new features such as full 3D hardware acceleration and the less restrictive zlib license.

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Steam Input causes SEGFAULT whenever I call GetAnalogActionData

I'm making a game using SDL2, with controller support through Steamworks, and my program SEGFAULTs whenever GetAnalogActionData is called. I'm compiling with MinGW g++ through MSYS2, using Steamworks API version 157. I know I should store the…
addiment
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Basic question about C, SDL2 and pointers

I am trying to learn SDL2 by using C. My problem is that I am trying to avoid creating a global SDL_Window by doing this: void init(SDL_Window *win){ SDL_Init(SDL_INIT_EVERETHING); win = SDL_CreateWindow("PONG", SDL_WINDOWPOS_UNDEFINED,…
evolhart
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SDL2 library inclusion

VS Code keeps displaying an error: fatal error: SDL2/SDL_image.h: No such file or directory This is my code: #include #include const int WIDTH = 800, HEIGHT = 600; int main( int argc, char *argv[] ) { SDL_Init(…
MrRooby
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How does the SDL_RenderCopy determine where to draw?

I need to render something based on the map. Now SDL_RenderCopy accepts negative value for it's co-ordinate. If I use SDL_RenderCopy with a dstrect={0,-16,32,32}, it would render the bottom half of the rectangle on the Top left of the window. In my…
snowman4933
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SDL2 not showing contents of Window (C++)

I have the following code to create a window, fill it with red, and display it. This was mostly taken directly from some other answer on here, so should be perfectly fine. // test.cpp #include int main(int argc, char** argv) { …
Jo Mo
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Game controller button number incompability between SDL2 and other tools (Windows' and online tools)

I'm trying to make a 1 to 1 mapping between physical game controller device and virtual device (vJoy). What I want to achieve is when button no X is pressed on physical device, make button no X pressed on virtual device. Since I'm trying to map 1-1…
Yunus Yurtturk
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SDL2_image C# Couldn't open file.png

When trying to load a texture into the console, the output is: Couldn't open lettuce.png I tried to upload both jpg files and webp. Changed SDL flags. But nothing helped. There are no problems with initializing SDL enter image description here If…
OZYREO
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SDL_Vulkan_GetInstanceExtensions fails with "The specified window isn't a Vulkan window" on Linux

I am trying to init Vulkan on Linux. I do pass SDL_WINDOW_VULKAN flag to SDL_CreateWindow and call to SDL_Vulkan_GetInstanceExtensions fails with error "The specified window isn't a Vulkan window". I cannot find any specific info on what is the…
vocasle
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SDL 2 undefined reference to `Window::Window(std::__cxx11::basic_string, std::allocator >, int, int)'

//To note I just started learning SDL2 from 30th April so please be considerate of my lack of knowledge I made a header file called "window.h" as a class. And when I recall that window class in the main.cpp open a window with the input that i have…
Nathan
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How To display the time passed in an SDL Window using SDL2_TTF Library?

I am programming a simple window-based game using SDL2 libraries in C++. With the help of the SDL2_ttf library, I have no trouble displaying static fonts to my SDL_Window like the name of the game. But I also want to display to the user how many…
Ömer Can Öztürk
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How to prevent the disappearing of an object when it goes out the window in SDL2?

For a school project, we are asked to use the graphics module SDL2 and I'm trying to learn the basic concepts of it. I can add texts and images, create rectangles and move them, but ,because I have never written the condition to reappear from the…
Deniz Aynur
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rotating a sprite component with the mouse cursor

i am learning how to make a 2d game using sdl and c++ and am currently trying to rotate the sprite so that is always facing the cursor, my game is set up with an entity component system, i have a keyboardcontroller component where the game will use…
user21746705
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What Win32 drawing function does SDL2's software renderer use under the hood?

There are many GDI functions, such as SetPixel(), but it is very expensive to set each pixel to a certain color, so I wonder what function does the library use. Searched the SDL2 source code, didn't find the drawing function.
MY-97
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Pyo3 library using sdl2

I was gonna create a Pyo3 library which implements some RL environments. I had been using Pyo3 for other tasks. I was gonna use also SDL2 rendering, however it gives me an error. #[pyclass] pub struct FirstEnv { pos: f32, renderer:…
Edvards Zakovskis
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Re - LINK : fatal error LNK1561: entry point must be defined while compiling SDL2 project with VS2022 Buildtools

I am trying to compile this code - //main.cpp #include int main(int argc,char* argv[]) { if(SDL_Init(SDL_INIT_VIDEO)) { return 1; } SDL_Window* window=SDL_CreateWindow("Project…
snowman4933
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