Tft. T3 Fonts.

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@ blackketter - I tried your version of the library from a couple of days ago. I renamed it to ili9341_t3xxx as to be able to try it out without overwriting some other versions.

I ran the same test like above and the timings were:
Code: 
Display Power Mode: 0xCE
MADCTL Mode: 0x24
Pixel Format: 0x2
Image Format: 0x0
Self Diagnostic: 0x0
Draw Opaque 0 71
Draw Opaque 1 114
Draw Opaque 0 71
Draw Opaque 1 113
Draw Opaque 0 71
Draw Opaque 1 114
Draw Opaque 0 71
Draw Opaque 1 114
So it looks like the change to use fillRect instead of multiple horizontal lines saved a few percentage in the non Opaque mode and the generate a bitmap saves a reasonable amount of time.
 
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