Raspberry Pi via ssh/Xtunnel

efa · June 4, 2023, 8:37pm

I read that SDL2 on Raspberry Pi work only locally (do not start via ssh/Xtunnel).

I checked the supplied version and is 2.0.14 on both RaspberryOS (32bit) and Raspbian (64bit), and seems true, if I run locally start OK, while running via ssh I got this error:

 X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  130 (MIT-SHM)
  Minor opcode of failed request:  1 (X_ShmAttach)
  Serial number of failed request:  202
  Current serial number in output stream:  203

Following suggestion in RISC-V thread, I tryed to set:
SDL_VIDEODRIVER to directfb | wayland | kmsdrm
without success. With all It say
SDL_CreateWindow Error: wayland not available
or directfb | kmsdrm

What is the reason SDL2 on Raspberry (3B+ in my case) do not work via x11 ?

Other app that use X work well

efa · June 6, 2023, 8:20pm

and the same app built on Debian11/x86 work via x11

Code can be seen here:

efa · June 8, 2023, 1:47pm

if no one here know how to fix that, can you suggest me which is the right website where to ask?
thank you

efa · March 13, 2024, 12:23am

solverd:

put something different than:
SDL_RENDERER_SOFTWARE
at line:

github.com

efa/Wilderland/blob/551de149fd56fc7366cb75f640003366039a8043/WL.c#L1581


      
             }

             MapWinPtr = SDL_CreateWindow("Wilderland - Map", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, MAPWINWIDTHND, MAPWINHEIGHTND, WinMode | SDL_WINDOW_HIDDEN|SDL_WINDOW_ALLOW_HIGHDPI); // SDL_WINDOW_OPENGL|SDL_WINDOW_VULKAN|SDL_WINDOW_FULLSCREEN_DESKTOP //SDL_WINDOWPOS_UNDEFINED

             if (MapWinPtr == NULL) {

                fprintf(stderr, "SDL_CreateWindow Error: %s\n", SDL_GetError());

                SDL_Quit();

                return 1;

             }

          }

          

          // Creating a Renderer (window, driver index, flags: SW|HW accelerated|vsync)

          renPtr = SDL_CreateRenderer(winPtr, -1, SDL_RENDERER_SOFTWARE); // SDL_RENDERER_SOFTWARE|SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_TARGETTEXTURE

          if (renPtr == NULL){

             fprintf(stderr, "SDL_CreateRenderer Error: %s\n", SDL_GetError());

             SDL_DestroyWindow(winPtr);

             SDL_Quit();

             return 1;

          }

          MapRenPtr = renPtr;

          if (dockMap==false) {

             MapRenPtr = SDL_CreateRenderer(MapWinPtr, -1, SDL_RENDERER_SOFTWARE); // SDL_RENDERER_SOFTWARE|SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_TARGETTEXTURE

             if (MapRenPtr == NULL){

and 1590, like 0 or something else like:
SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_TARGETTEXTURE
let run the app via X/network.