Unlock a texture, uploading the changes to video memory, if needed.
**Warning**: Please note that SDL_LockTexture is intended to be
write-only; it will not guarantee the previous contents of the texture will
be provided. You must fully initialize any area of a texture that you lock
before unlocking it, as the pixels might otherwise be uninitialized memory.
Which is to say: locking and immediately unlocking a texture can result in
corrupted textures, depending on the renderer in use.
Unlock a texture, uploading the changes to video memory, if needed.
**Warning**: Please note that SDL_LockTexture is intended to be write-only; it will not guarantee the previous contents of the texture will be provided. You must fully initialize any area of a texture that you lock before unlocking it, as the pixels might otherwise be uninitialized memory.
Which is to say: locking and immediately unlocking a texture can result in corrupted textures, depending on the renderer in use.