SDL_GL_SetAttribute - Set an OpenGL window attribute before window creation.

       This function is available since SDL 3.2.0.

       This  function  sets  the  OpenGL attribute attr to value . The requested attributes should be set before
       creating an OpenGL window. You should use

       SDL_GL_GetAttribute () to check the values after creating the OpenGL context, since the  values  obtained
       can differ from the requested ones.

attr   an SDL_GLAttr
               enum value specifying the OpenGL attribute to set.

       value  the desired value for the attribute.

       Defined in SDL3/SDL_video.h

       SDL_GL_SetAttribute - Set an OpenGL window attribute before window creation.

       Returns true on success or false on failure; call

       SDL_GetError () for more information.

•(3), SDL_GL_GetAttribute(3), •(3), SDL_GL_ResetAttributes(3)

Simple Directmedia Layer                           SDL 3.2.10                             SDL_GL_SetAttribute(3)

#include"SDL3/SDL.h"boolSDL_GL_SetAttribute(SDL_GLAttrattr,intvalue);

       This function should only be called on the main thread.