Sdl gl attributes
SDL_GL_RED_SIZE
Size of the framebuffer red component, in bits
SDL_GL_GREEN_SIZE
Size of the framebuffer green component, in bits
SDL_GL_BLUE_SIZE
Size of the framebuffer blue component, in bits
SDL_GL_ALPHA_SIZE
Size of the framebuffer alpha component, in bits
SDL_GL_DOUBLEBUFFER
0 or 1, enable or disable double buffering
SDL_GL_BUFFER_SIZE
Size of the framebuffer, in bits
SDL_GL_DEPTH_SIZE
Size of the depth buffer, in bits
SDL_GL_STENCIL_SIZE
Size of the stencil buffer, in bits
SDL_GL_ACCUM_RED_SIZE
Size of the accumulation buffer red component, in bits
SDL_GL_ACCUM_GREEN_SIZE
Size of the accumulation buffer green component, in bits
SDL_GL_ACCUM_BLUE_SIZE
Size of the accumulation buffer blue component, in bits
SDL_GL_ACCUM_ALPHA_SIZE
Size of the accumulation buffer alpha component, in bits
While you can set most OpenGL attributes normally, the attributes list above must be known before SDL sets the video mode. These attributes a set and read with SDL_GL_SetAttribute and SDL_GL_GetAttribute.
SDL_GL_SetAttribute, SDL_GL_GetAttribute