BLIT MERGE colour, x, y, w, h
not VGA or HDMI versions
Copies an area of the framebuffer defined by the x and y pixel coordinates of the top left and with a width of w and height h to the LCD display.
As part of the copy it will overlay the LCD display with pixels from the layer buffer that aren't set to the colour specified. The colour is specified as a number between 0 and 15 representing:
black, blue, myrtle, cobalt, midgreen, cerulean, green, cyan, red, magenta, rust, fuschia, brown, lilac, yellow and white
Requires both a framebuffer and a layer buffer to have been created to operate.
Will automatically wait for frame blanking before starting the copy on ILI9341, ST7789_320 and ILI9488 displays.