I'm trying to find a display driver that can drive a VGA and/or HDMI output at 1280x720 with 8-bit color. I've found a lot of LCD drivers, but I'm coming up empty on VGA/HDMI drivers. Ideally it would have a built-in frame buffer, but it would also be acceptable if it used external SRAM.
If that doesn't exist, would something like an Atmel SAMD have enough horsepower to bit-bang at least the VGA, if not the HDMI? I've never worked with VGA/HDMI before other than the canned libraries on the Propeller so this is all new territory for me.