This is what my Early 2013 rMBP looked like last night after waking the display from sleep. It has happened about 6 times in the last 2 months. Rebooting fixes the issue, but there is never any warning and I always lose my work. This happens most commonly while using airplay, remote desktop, and games. I initially tried disabling the graphics switching and reset SMC to no avail. When this started, it would only affect the bottom portion of the screen around the dock; switching resolutions would resolve. Now the whole screen is affected, and I am becoming more suspicious of the GPU(s). This computer isn't even 6 months old Any advice?