Is there synchronization between the GPU and the FrameBuffer to tell it that the GPU has finished drawing the current frame? This may be a rare case but I'm getting stuck at the Sample Code.
I'm assuming we're reusing the same FrameBuffer object so it seems like we're using the same two pixel array references. If the GPU can't tell the game it's not done with the current buffer, couldn't the game easily start writing into the buffer the GPU is currently working with if it's just swapping in its own loop? This assumes the game has already drawn the next frame and has swapped back to the former frame.
In the reverse case I guess the game loop could fall behind and we keep writing the same frame and introducing lag.
Is there synchronization between the GPU and the FrameBuffer to tell it that the GPU has finished drawing the current frame? This may be a rare case but I'm getting stuck at the Sample Code.
I'm assuming we're reusing the same FrameBuffer object so it seems like we're using the same two pixel array references. If the GPU can't tell the game it's not done with the current buffer, couldn't the game easily start writing into the buffer the GPU is currently working with if it's just swapping in its own loop? This assumes the game has already drawn the next frame and has swapped back to the former frame.
In the reverse case I guess the game loop could fall behind and we keep writing the same frame and introducing lag.