LEXSDL_AddTexture

Allows to add a existing SDL_Texture to the internal array to be used with the rest of LEXSDL.
Returns the id of the texture (the index in the internal array of SDL_Texture).
It's internally used by LEXSDL_LoadTexture(), LEXSDL_LoadTextureBytes() to add the created texture.

Since this function can fail (return values listed bellow) it should be check if the returned value is a id or a error.
A fail will not cause a segfault so it can be retried to add the texture.

Function

Return

0+ : adding was successfull and returned value is the texture id.
-1 : could not add the first texture.
-2 : could not add texture.
-4 : the texture pointer was invalid.

Parameters

SDL_Texture *textures : the pointer of the SDL_Texture to be added.